net/wireless/nl80211.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * This is the new netlink-based wireless configuration interface.
   4  *
   5  * Copyright 2006-2010  Johannes Berg <[email protected]>
   6  * Copyright 2013-2014  Intel Mobile Communications GmbH
   7  * Copyright 2015-2017  Intel Deutschland GmbH
   8  * Copyright (C) 2018-2023 Intel Corporation
   9  */
  10
  11 #include <linux/if.h>
  12 #include <linux/module.h>
  13 #include <linux/err.h>
  14 #include <linux/slab.h>
  15 #include <linux/list.h>
  16 #include <linux/if_ether.h>
  17 #include <linux/ieee80211.h>
  18 #include <linux/nl80211.h>
  19 #include <linux/rtnetlink.h>
  20 #include <linux/netlink.h>
  21 #include <linux/nospec.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/if_vlan.h>
  24 #include <net/net_namespace.h>
  25 #include <net/genetlink.h>
  26 #include <net/cfg80211.h>
  27 #include <net/sock.h>
  28 #include <net/inet_connection_sock.h>
  29 #include "core.h"
  30 #include "nl80211.h"
  31 #include "reg.h"
  32 #include "rdev-ops.h"
  33
  34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  35                                    struct genl_info *info,
  36                                    struct cfg80211_crypto_settings *settings,
  37                                    int cipher_limit);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam;
  41
  42 /* multicast groups */
  43 enum nl80211_multicast_groups {
  44         NL80211_MCGRP_CONFIG,
  45         NL80211_MCGRP_SCAN,
  46         NL80211_MCGRP_REGULATORY,
  47         NL80211_MCGRP_MLME,
  48         NL80211_MCGRP_VENDOR,
  49         NL80211_MCGRP_NAN,
  50         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  51 };
  52
  53 static const struct genl_multicast_group nl80211_mcgrps[] = {
  54         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  55         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  56         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  57         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  58         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  59         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  60 #ifdef CONFIG_NL80211_TESTMODE
  61         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  62 #endif
  63 };
  64
  65 /* returns ERR_PTR values */
  66 static struct wireless_dev *
  67 __cfg80211_wdev_from_attrs(struct cfg80211_registered_device *rdev,
  68                            struct net *netns, struct nlattr **attrs)
  69 {
  70         struct wireless_dev *result = NULL;
  71         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  72         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  73         u64 wdev_id = 0;
  74         int wiphy_idx = -1;
  75         int ifidx = -1;
  76
  77         if (!have_ifidx && !have_wdev_id)
  78                 return ERR_PTR(-EINVAL);
  79
  80         if (have_ifidx)
  81                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  82         if (have_wdev_id) {
  83                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  84                 wiphy_idx = wdev_id >> 32;
  85         }
  86
  87         if (rdev) {
  88                 struct wireless_dev *wdev;
  89
  90                 lockdep_assert_held(&rdev->wiphy.mtx);
  91
  92                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  93                         if (have_ifidx && wdev->netdev &&
  94                             wdev->netdev->ifindex == ifidx) {
  95                                 result = wdev;
  96                                 break;
  97                         }
  98                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
  99                                 result = wdev;
 100                                 break;
 101                         }
 102                 }
 103
 104                 return result ?: ERR_PTR(-ENODEV);
 105         }
 106
 107         ASSERT_RTNL();
 108
 109         for_each_rdev(rdev) {
 110                 struct wireless_dev *wdev;
 111
 112                 if (wiphy_net(&rdev->wiphy) != netns)
 113                         continue;
 114
 115                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 116                         continue;
 117
 118                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
 119                         if (have_ifidx && wdev->netdev &&
 120                             wdev->netdev->ifindex == ifidx) {
 121                                 result = wdev;
 122                                 break;
 123                         }
 124                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 125                                 result = wdev;
 126                                 break;
 127                         }
 128                 }
 129
 130                 if (result)
 131                         break;
 132         }
 133
 134         if (result)
 135                 return result;
 136         return ERR_PTR(-ENODEV);
 137 }
 138
 139 static struct cfg80211_registered_device *
 140 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 141 {
 142         struct cfg80211_registered_device *rdev = NULL, *tmp;
 143         struct net_device *netdev;
 144
 145         ASSERT_RTNL();
 146
 147         if (!attrs[NL80211_ATTR_WIPHY] &&
 148             !attrs[NL80211_ATTR_IFINDEX] &&
 149             !attrs[NL80211_ATTR_WDEV])
 150                 return ERR_PTR(-EINVAL);
 151
 152         if (attrs[NL80211_ATTR_WIPHY])
 153                 rdev = cfg80211_rdev_by_wiphy_idx(
 154                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 155
 156         if (attrs[NL80211_ATTR_WDEV]) {
 157                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 158                 struct wireless_dev *wdev;
 159                 bool found = false;
 160
 161                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 162                 if (tmp) {
 163                         /* make sure wdev exists */
 164                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 165                                 if (wdev->identifier != (u32)wdev_id)
 166                                         continue;
 167                                 found = true;
 168                                 break;
 169                         }
 170
 171                         if (!found)
 172                                 tmp = NULL;
 173
 174                         if (rdev && tmp != rdev)
 175                                 return ERR_PTR(-EINVAL);
 176                         rdev = tmp;
 177                 }
 178         }
 179
 180         if (attrs[NL80211_ATTR_IFINDEX]) {
 181                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 182
 183                 netdev = __dev_get_by_index(netns, ifindex);
 184                 if (netdev) {
 185                         if (netdev->ieee80211_ptr)
 186                                 tmp = wiphy_to_rdev(
 187                                         netdev->ieee80211_ptr->wiphy);
 188                         else
 189                                 tmp = NULL;
 190
 191                         /* not wireless device -- return error */
 192                         if (!tmp)
 193                                 return ERR_PTR(-EINVAL);
 194
 195                         /* mismatch -- return error */
 196                         if (rdev && tmp != rdev)
 197                                 return ERR_PTR(-EINVAL);
 198
 199                         rdev = tmp;
 200                 }
 201         }
 202
 203         if (!rdev)
 204                 return ERR_PTR(-ENODEV);
 205
 206         if (netns != wiphy_net(&rdev->wiphy))
 207                 return ERR_PTR(-ENODEV);
 208
 209         return rdev;
 210 }
 211
 212 /*
 213  * This function returns a pointer to the driver
 214  * that the genl_info item that is passed refers to.
 215  *
 216  * The result of this can be a PTR_ERR and hence must
 217  * be checked with IS_ERR() for errors.
 218  */
 219 static struct cfg80211_registered_device *
 220 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 221 {
 222         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 223 }
 224
 225 static int validate_beacon_head(const struct nlattr *attr,
 226                                 struct netlink_ext_ack *extack)
 227 {
 228         const u8 *data = nla_data(attr);
 229         unsigned int len = nla_len(attr);
 230         const struct element *elem;
 231         const struct ieee80211_mgmt *mgmt = (void *)data;
 232         unsigned int fixedlen, hdrlen;
 233         bool s1g_bcn;
 234
 235         if (len < offsetofend(typeof(*mgmt), frame_control))
 236                 goto err;
 237
 238         s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
 239         if (s1g_bcn) {
 240                 fixedlen = offsetof(struct ieee80211_ext,
 241                                     u.s1g_beacon.variable);
 242                 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
 243         } else {
 244                 fixedlen = offsetof(struct ieee80211_mgmt,
 245                                     u.beacon.variable);
 246                 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
 247         }
 248
 249         if (len < fixedlen)
 250                 goto err;
 251
 252         if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
 253                 goto err;
 254
 255         data += fixedlen;
 256         len -= fixedlen;
 257
 258         for_each_element(elem, data, len) {
 259                 /* nothing */
 260         }
 261
 262         if (for_each_element_completed(elem, data, len))
 263                 return 0;
 264
 265 err:
 266         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 267         return -EINVAL;
 268 }
 269
 270 static int validate_ie_attr(const struct nlattr *attr,
 271                             struct netlink_ext_ack *extack)
 272 {
 273         const u8 *data = nla_data(attr);
 274         unsigned int len = nla_len(attr);
 275         const struct element *elem;
 276
 277         for_each_element(elem, data, len) {
 278                 /* nothing */
 279         }
 280
 281         if (for_each_element_completed(elem, data, len))
 282                 return 0;
 283
 284         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 285         return -EINVAL;
 286 }
 287
 288 static int validate_he_capa(const struct nlattr *attr,
 289                             struct netlink_ext_ack *extack)
 290 {
 291         if (!ieee80211_he_capa_size_ok(nla_data(attr), nla_len(attr)))
 292                 return -EINVAL;
 293
 294         return 0;
 295 }
 296
 297 /* policy for the attributes */
 298 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
 299
 300 static const struct nla_policy
 301 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 302         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 303         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 304                                         .len = U8_MAX },
 305         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 306                                              .len = U8_MAX },
 307 };
 308
 309 static const struct nla_policy
 310 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 311         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 312         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 313         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 314                 NLA_POLICY_MAX(NLA_U8, 15),
 315         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 316         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 317                 NLA_POLICY_MAX(NLA_U8, 15),
 318         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 319                 NLA_POLICY_MAX(NLA_U8, 31),
 320         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 321         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 322         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 323         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 324         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 325         [NL80211_PMSR_FTM_REQ_ATTR_LMR_FEEDBACK] = { .type = NLA_FLAG },
 326         [NL80211_PMSR_FTM_REQ_ATTR_BSS_COLOR] = { .type = NLA_U8 },
 327 };
 328
 329 static const struct nla_policy
 330 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 331         [NL80211_PMSR_TYPE_FTM] =
 332                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 333 };
 334
 335 static const struct nla_policy
 336 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 337         [NL80211_PMSR_REQ_ATTR_DATA] =
 338                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 339         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 340 };
 341
 342 static const struct nla_policy
 343 nl80211_pmsr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 344         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 345         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 346         [NL80211_PMSR_PEER_ATTR_REQ] =
 347                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 348         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 349 };
 350
 351 static const struct nla_policy
 352 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 353         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 354         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 355         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 356         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 357         [NL80211_PMSR_ATTR_PEERS] =
 358                 NLA_POLICY_NESTED_ARRAY(nl80211_pmsr_peer_attr_policy),
 359 };
 360
 361 static const struct nla_policy
 362 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 363         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 364                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 365         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 366                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 367         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 368                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 369         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 370                 NLA_POLICY_EXACT_LEN(8),
 371         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 372                 NLA_POLICY_EXACT_LEN(8),
 373         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 374 };
 375
 376 static const struct nla_policy
 377 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 378         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 379         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 380         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 381 };
 382
 383 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 384         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 385                                     .len = NL80211_MAX_SUPP_RATES },
 386         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 387                                 .len = NL80211_MAX_SUPP_HT_RATES },
 388         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 389         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 390         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 391         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 392                                                    NL80211_RATE_INFO_HE_GI_0_8,
 393                                                    NL80211_RATE_INFO_HE_GI_3_2),
 394         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 395                                                    NL80211_RATE_INFO_HE_1XLTF,
 396                                                    NL80211_RATE_INFO_HE_4XLTF),
 397 };
 398
 399 static const struct nla_policy
 400 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 401         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 402         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 403         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 404         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 405         [NL80211_TID_CONFIG_ATTR_NOACK] =
 406                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 407         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 408         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 409         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 410                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 411         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 412                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 413         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 414                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 415         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 416                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 417         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 418                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 419 };
 420
 421 static const struct nla_policy
 422 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 423         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 424         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 425         [NL80211_FILS_DISCOVERY_ATTR_TMPL] =
 426                         NLA_POLICY_RANGE(NLA_BINARY,
 427                                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 428                                          IEEE80211_MAX_DATA_LEN),
 429 };
 430
 431 static const struct nla_policy
 432 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 433         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 434         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 435                                                        .len = IEEE80211_MAX_DATA_LEN }
 436 };
 437
 438 static const struct nla_policy
 439 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
 440         [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
 441         [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
 442 };
 443
 444 static const struct nla_policy
 445 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
 446         [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
 447         [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
 448 };
 449
 450 static const struct nla_policy
 451 nl80211_mbssid_config_policy[NL80211_MBSSID_CONFIG_ATTR_MAX + 1] = {
 452         [NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES] = NLA_POLICY_MIN(NLA_U8, 2),
 453         [NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY] =
 454                                                 NLA_POLICY_MIN(NLA_U8, 1),
 455         [NL80211_MBSSID_CONFIG_ATTR_INDEX] = { .type = NLA_U8 },
 456         [NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX] = { .type = NLA_U32 },
 457         [NL80211_MBSSID_CONFIG_ATTR_EMA] = { .type = NLA_FLAG },
 458 };
 459
 460 static const struct nla_policy
 461 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
 462         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
 463         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
 464 };
 465
 466 static const struct netlink_range_validation nl80211_punct_bitmap_range = {
 467         .min = 0,
 468         .max = 0xffff,
 469 };
 470
 471 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 472         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 473         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 474         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 475                                       .len = 20-1 },
 476         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 477
 478         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 479         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 480         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 481                                                 NL80211_EDMG_CHANNELS_MIN,
 482                                                 NL80211_EDMG_CHANNELS_MAX),
 483         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 484                                                 NL80211_EDMG_BW_CONFIG_MIN,
 485                                                 NL80211_EDMG_BW_CONFIG_MAX),
 486
 487         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 488         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 489         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 490         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 491
 492         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 493         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 494         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 495         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 496         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 497         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 498
 499         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 500         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 501         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 502
 503         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 504         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 505
 506         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 507         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 508                                     .len = WLAN_MAX_KEY_LEN },
 509         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 510         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 511         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 512         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 513         [NL80211_ATTR_KEY_TYPE] =
 514                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 515
 516         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 517         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 518         [NL80211_ATTR_BEACON_HEAD] =
 519                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 520                                        IEEE80211_MAX_DATA_LEN),
 521         [NL80211_ATTR_BEACON_TAIL] =
 522                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 523                                        IEEE80211_MAX_DATA_LEN),
 524         [NL80211_ATTR_STA_AID] =
 525                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 526         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 527         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 528         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 529                                                .len = NL80211_MAX_SUPP_RATES },
 530         [NL80211_ATTR_STA_PLINK_ACTION] =
 531                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 532         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 533                 NLA_POLICY_RANGE(NLA_U8,
 534                                  NL80211_TX_POWER_AUTOMATIC,
 535                                  NL80211_TX_POWER_FIXED),
 536         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 537         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 538         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 539         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 540                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 541         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 542
 543         /* allow 3 for NUL-termination, we used to declare this NLA_STRING */
 544         [NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3),
 545         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 546
 547         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 548         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 549         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 550         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 551                                            .len = NL80211_MAX_SUPP_RATES },
 552         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 553
 554         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 555         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 556
 557         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 558
 559         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 560         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 561                                                    validate_ie_attr,
 562                                                    IEEE80211_MAX_DATA_LEN),
 563         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 564         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 565
 566         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 567                                 .len = IEEE80211_MAX_SSID_LEN },
 568         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 569         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 570         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 571         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 572         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 573                                                   NL80211_MFP_NO,
 574                                                   NL80211_MFP_OPTIONAL),
 575         [NL80211_ATTR_STA_FLAGS2] =
 576                 NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_sta_flag_update)),
 577         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 578         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 579         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 580         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 581         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 582         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 583         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 584         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 585         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 586         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 587         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 588         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 589         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 590         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 591         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 592                                  .len = IEEE80211_MAX_DATA_LEN },
 593         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 594         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 595                                                    NL80211_PS_DISABLED,
 596                                                    NL80211_PS_ENABLED),
 597         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 598         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 599         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 600         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 601         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 602         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 603         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 604         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 605         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 606         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 607         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 608         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 609         [NL80211_ATTR_STA_PLINK_STATE] =
 610                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 611         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 612         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 613         [NL80211_ATTR_MESH_PEER_AID] =
 614                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 615         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 616         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 617         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 618         [NL80211_ATTR_HIDDEN_SSID] =
 619                 NLA_POLICY_RANGE(NLA_U32,
 620                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 621                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 622         [NL80211_ATTR_IE_PROBE_RESP] =
 623                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 624                                        IEEE80211_MAX_DATA_LEN),
 625         [NL80211_ATTR_IE_ASSOC_RESP] =
 626                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 627                                        IEEE80211_MAX_DATA_LEN),
 628         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 629         [NL80211_ATTR_STA_WME] = NLA_POLICY_NESTED(nl80211_sta_wme_policy),
 630         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 631         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 632         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 633         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 634         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 635         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 636         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 637         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 638         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 639         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 640                                       .len = IEEE80211_MAX_DATA_LEN },
 641         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 642         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 643         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 644                 .len = NL80211_HT_CAPABILITY_LEN
 645         },
 646         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 647         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 648         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 649         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 650         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 651
 652         /* need to include at least Auth Transaction and Status Code */
 653         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 654
 655         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 656         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 657         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 658         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 659         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 660                 NLA_POLICY_RANGE(NLA_U32,
 661                                  NL80211_MESH_POWER_UNKNOWN + 1,
 662                                  NL80211_MESH_POWER_MAX),
 663         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 664         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 665         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 666         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 667         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 668         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 669         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 670                 .len = NL80211_VHT_CAPABILITY_LEN,
 671         },
 672         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 673         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 674                                   .len = IEEE80211_MAX_DATA_LEN },
 675         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 676         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 677                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 678         [NL80211_ATTR_PEER_AID] =
 679                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 680         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 681         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 682         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 683         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 684         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 685         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 686         /*
 687          * The value of the Length field of the Supported Operating
 688          * Classes element is between 2 and 253.
 689          */
 690         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 691                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 692         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 693         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 694         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 695         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 696         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 697         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 698                                                   IEEE80211_QOS_MAP_LEN_MIN,
 699                                                   IEEE80211_QOS_MAP_LEN_MAX),
 700         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 701         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 702         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 703         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 704         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 705         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 706         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 707         [NL80211_ATTR_USER_PRIO] =
 708                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 709         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 710         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 711         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 712         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 713         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 714         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 715         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 716         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 717         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 718         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 719         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 720                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 721         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 722                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 723         },
 724         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 725         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 726         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 727         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 728         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 729                                     .len = FILS_MAX_KEK_LEN },
 730         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 731         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 732         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 733         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 734         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 735                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 736         },
 737         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 738         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 739                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 740         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 741                                           .len = FILS_ERP_MAX_REALM_LEN },
 742         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 743         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 744                                         .len = FILS_ERP_MAX_RRK_LEN },
 745         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 746         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 747         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 748         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 749         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 750
 751         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 752         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 753         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 754         [NL80211_ATTR_HE_CAPABILITY] =
 755                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_he_capa,
 756                                        NL80211_HE_MAX_CAPABILITY_LEN),
 757         [NL80211_ATTR_FTM_RESPONDER] =
 758                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 759         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 760         [NL80211_ATTR_PEER_MEASUREMENTS] =
 761                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 762         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 763         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 764                                         .len = SAE_PASSWORD_MAX_LEN },
 765         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 766         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 767         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 768         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 769         [NL80211_ATTR_TID_CONFIG] =
 770                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 771         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 772         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 773         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 774         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 775         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 776         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 777         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 778                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 779         [NL80211_ATTR_FILS_DISCOVERY] =
 780                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 781         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 782                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 783         [NL80211_ATTR_S1G_CAPABILITY] =
 784                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 785         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 786                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 787         [NL80211_ATTR_SAE_PWE] =
 788                 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
 789                                  NL80211_SAE_PWE_BOTH),
 790         [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
 791         [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
 792         [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
 793         [NL80211_ATTR_OBSS_COLOR_BITMAP] = { .type = NLA_U64 },
 794         [NL80211_ATTR_COLOR_CHANGE_COUNT] = { .type = NLA_U8 },
 795         [NL80211_ATTR_COLOR_CHANGE_COLOR] = { .type = NLA_U8 },
 796         [NL80211_ATTR_COLOR_CHANGE_ELEMS] = NLA_POLICY_NESTED(nl80211_policy),
 797         [NL80211_ATTR_MBSSID_CONFIG] =
 798                         NLA_POLICY_NESTED(nl80211_mbssid_config_policy),
 799         [NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
 800         [NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG },
 801         [NL80211_ATTR_AP_SETTINGS_FLAGS] = { .type = NLA_U32 },
 802         [NL80211_ATTR_EHT_CAPABILITY] =
 803                 NLA_POLICY_RANGE(NLA_BINARY,
 804                                  NL80211_EHT_MIN_CAPABILITY_LEN,
 805                                  NL80211_EHT_MAX_CAPABILITY_LEN),
 806         [NL80211_ATTR_DISABLE_EHT] = { .type = NLA_FLAG },
 807         [NL80211_ATTR_MLO_LINKS] =
 808                 NLA_POLICY_NESTED_ARRAY(nl80211_policy),
 809         [NL80211_ATTR_MLO_LINK_ID] =
 810                 NLA_POLICY_RANGE(NLA_U8, 0, IEEE80211_MLD_MAX_NUM_LINKS),
 811         [NL80211_ATTR_MLD_ADDR] = NLA_POLICY_EXACT_LEN(ETH_ALEN),
 812         [NL80211_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG },
 813         [NL80211_ATTR_MAX_NUM_AKM_SUITES] = { .type = NLA_REJECT },
 814         [NL80211_ATTR_PUNCT_BITMAP] =
 815                 NLA_POLICY_FULL_RANGE(NLA_U32, &nl80211_punct_bitmap_range),
 816
 817         [NL80211_ATTR_MAX_HW_TIMESTAMP_PEERS] = { .type = NLA_U16 },
 818         [NL80211_ATTR_HW_TIMESTAMP_ENABLED] = { .type = NLA_FLAG },
 819         [NL80211_ATTR_EMA_RNR_ELEMS] = { .type = NLA_NESTED },
 820         [NL80211_ATTR_MLO_LINK_DISABLED] = { .type = NLA_FLAG },
 821         [NL80211_ATTR_BSS_DUMP_INCLUDE_USE_DATA] = { .type = NLA_FLAG },
 822         [NL80211_ATTR_MLO_TTLM_DLINK] = NLA_POLICY_EXACT_LEN(sizeof(u16) * 8),
 823         [NL80211_ATTR_MLO_TTLM_ULINK] = NLA_POLICY_EXACT_LEN(sizeof(u16) * 8),
 824 };
 825
 826 /* policy for the key attributes */
 827 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 828         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 829         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 830         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 831         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 832         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 833         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 834         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 835         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 836         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 837 };
 838
 839 /* policy for the key default flags */
 840 static const struct nla_policy
 841 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 842         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 843         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 844 };
 845
 846 #ifdef CONFIG_PM
 847 /* policy for WoWLAN attributes */
 848 static const struct nla_policy
 849 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 850         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 851         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 852         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 853         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 854         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 855         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 856         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 857         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 858         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 859         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 860 };
 861
 862 static const struct nla_policy
 863 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 864         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 865         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 866         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 867         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 868         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 869         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 870         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 871                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 872         },
 873         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 874                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 875         },
 876         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 877         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 878         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 879 };
 880 #endif /* CONFIG_PM */
 881
 882 /* policy for coalesce rule attributes */
 883 static const struct nla_policy
 884 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 885         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 886         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 887                 NLA_POLICY_RANGE(NLA_U32,
 888                                  NL80211_COALESCE_CONDITION_MATCH,
 889                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 890         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 891 };
 892
 893 /* policy for GTK rekey offload attributes */
 894 static const struct nla_policy
 895 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 896         [NL80211_REKEY_DATA_KEK] = {
 897                 .type = NLA_BINARY,
 898                 .len = NL80211_KEK_EXT_LEN
 899         },
 900         [NL80211_REKEY_DATA_KCK] = {
 901                 .type = NLA_BINARY,
 902                 .len = NL80211_KCK_EXT_LEN_32
 903         },
 904         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 905         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 906 };
 907
 908 static const struct nla_policy
 909 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 910         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 911         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 912         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 913         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 914         [NL80211_BAND_LC]    = { .type = NLA_S32 },
 915 };
 916
 917 static const struct nla_policy
 918 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 919         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 920                                                  .len = IEEE80211_MAX_SSID_LEN },
 921         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 922         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 923         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 924                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 925 };
 926
 927 static const struct nla_policy
 928 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 929         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 930         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 931 };
 932
 933 static const struct nla_policy
 934 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 935         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 936         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 937         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 938                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 939         },
 940 };
 941
 942 /* policy for NAN function attributes */
 943 static const struct nla_policy
 944 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 945         [NL80211_NAN_FUNC_TYPE] =
 946                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 947         [NL80211_NAN_FUNC_SERVICE_ID] = {
 948                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 949         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 950         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 951         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 952         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 953         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 954         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 955         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 956         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 957         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 958                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 959         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 960         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 961         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 962         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 963         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 964 };
 965
 966 /* policy for Service Response Filter attributes */
 967 static const struct nla_policy
 968 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 969         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 970         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 971                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 972         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 973         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 974 };
 975
 976 /* policy for packet pattern attributes */
 977 static const struct nla_policy
 978 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 979         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 980         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 981         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 982 };
 983
 984 static int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 985                                      struct cfg80211_registered_device **rdev,
 986                                      struct wireless_dev **wdev,
 987                                      struct nlattr **attrbuf)
 988 {
 989         int err;
 990
 991         if (!cb->args[0]) {
 992                 struct nlattr **attrbuf_free = NULL;
 993
 994                 if (!attrbuf) {
 995                         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 996                                           GFP_KERNEL);
 997                         if (!attrbuf)
 998                                 return -ENOMEM;
 999                         attrbuf_free = attrbuf;
1000                 }
1001
1002                 err = nlmsg_parse_deprecated(cb->nlh,
1003                                              GENL_HDRLEN + nl80211_fam.hdrsize,
1004                                              attrbuf, nl80211_fam.maxattr,
1005                                              nl80211_policy, NULL);
1006                 if (err) {
1007                         kfree(attrbuf_free);
1008                         return err;
1009                 }
1010
1011                 rtnl_lock();
1012                 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
1013                                                    attrbuf);
1014                 kfree(attrbuf_free);
1015                 if (IS_ERR(*wdev)) {
1016                         rtnl_unlock();
1017                         return PTR_ERR(*wdev);
1018                 }
1019                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
1020                 mutex_lock(&(*rdev)->wiphy.mtx);
1021                 rtnl_unlock();
1022                 /* 0 is the first index - add 1 to parse only once */
1023                 cb->args[0] = (*rdev)->wiphy_idx + 1;
1024                 cb->args[1] = (*wdev)->identifier;
1025         } else {
1026                 /* subtract the 1 again here */
1027                 struct wiphy *wiphy;
1028                 struct wireless_dev *tmp;
1029
1030                 rtnl_lock();
1031                 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
1032                 if (!wiphy) {
1033                         rtnl_unlock();
1034                         return -ENODEV;
1035                 }
1036                 *rdev = wiphy_to_rdev(wiphy);
1037                 *wdev = NULL;
1038
1039                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
1040                         if (tmp->identifier == cb->args[1]) {
1041                                 *wdev = tmp;
1042                                 break;
1043                         }
1044                 }
1045
1046                 if (!*wdev) {
1047                         rtnl_unlock();
1048                         return -ENODEV;
1049                 }
1050                 mutex_lock(&(*rdev)->wiphy.mtx);
1051                 rtnl_unlock();
1052         }
1053
1054         return 0;
1055 }
1056
1057 /* message building helper */
1058 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1059                      int flags, u8 cmd)
1060 {
1061         /* since there is no private header just add the generic one */
1062         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
1063 }
1064
1065 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
1066                                      const struct ieee80211_reg_rule *rule)
1067 {
1068         int j;
1069         struct nlattr *nl_wmm_rules =
1070                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
1071
1072         if (!nl_wmm_rules)
1073                 goto nla_put_failure;
1074
1075         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1076                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1077
1078                 if (!nl_wmm_rule)
1079                         goto nla_put_failure;
1080
1081                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1082                                 rule->wmm_rule.client[j].cw_min) ||
1083                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1084                                 rule->wmm_rule.client[j].cw_max) ||
1085                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
1086                                rule->wmm_rule.client[j].aifsn) ||
1087                     nla_put_u16(msg, NL80211_WMMR_TXOP,
1088                                 rule->wmm_rule.client[j].cot))
1089                         goto nla_put_failure;
1090
1091                 nla_nest_end(msg, nl_wmm_rule);
1092         }
1093         nla_nest_end(msg, nl_wmm_rules);
1094
1095         return 0;
1096
1097 nla_put_failure:
1098         return -ENOBUFS;
1099 }
1100
1101 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1102                                    struct ieee80211_channel *chan,
1103                                    bool large)
1104 {
1105         /* Some channels must be completely excluded from the
1106          * list to protect old user-space tools from breaking
1107          */
1108         if (!large && chan->flags &
1109             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1110                 return 0;
1111         if (!large && chan->freq_offset)
1112                 return 0;
1113
1114         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1115                         chan->center_freq))
1116                 goto nla_put_failure;
1117
1118         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1119                 goto nla_put_failure;
1120
1121         if ((chan->flags & IEEE80211_CHAN_PSD) &&
1122             nla_put_s8(msg, NL80211_FREQUENCY_ATTR_PSD, chan->psd))
1123                 goto nla_put_failure;
1124
1125         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1126             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1127                 goto nla_put_failure;
1128         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1129                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1130                         goto nla_put_failure;
1131                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1132                         goto nla_put_failure;
1133         }
1134         if (chan->flags & IEEE80211_CHAN_RADAR) {
1135                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1136                         goto nla_put_failure;
1137                 if (large) {
1138                         u32 time;
1139
1140                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1141
1142                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1143                                         chan->dfs_state))
1144                                 goto nla_put_failure;
1145                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1146                                         time))
1147                                 goto nla_put_failure;
1148                         if (nla_put_u32(msg,
1149                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1150                                         chan->dfs_cac_ms))
1151                                 goto nla_put_failure;
1152                 }
1153         }
1154
1155         if (large) {
1156                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1157                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1158                         goto nla_put_failure;
1159                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1160                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1161                         goto nla_put_failure;
1162                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1163                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1164                         goto nla_put_failure;
1165                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1166                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1167                         goto nla_put_failure;
1168                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1169                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1170                         goto nla_put_failure;
1171                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1172                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1173                         goto nla_put_failure;
1174                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1175                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1176                         goto nla_put_failure;
1177                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1178                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1179                         goto nla_put_failure;
1180                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1181                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1182                         goto nla_put_failure;
1183                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1184                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1185                         goto nla_put_failure;
1186                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1187                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1188                         goto nla_put_failure;
1189                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1190                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1191                         goto nla_put_failure;
1192                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1193                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1194                         goto nla_put_failure;
1195                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1196                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1197                         goto nla_put_failure;
1198                 if ((chan->flags & IEEE80211_CHAN_NO_320MHZ) &&
1199                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_320MHZ))
1200                         goto nla_put_failure;
1201                 if ((chan->flags & IEEE80211_CHAN_NO_EHT) &&
1202                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_EHT))
1203                         goto nla_put_failure;
1204                 if ((chan->flags & IEEE80211_CHAN_DFS_CONCURRENT) &&
1205                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DFS_CONCURRENT))
1206                         goto nla_put_failure;
1207                 if ((chan->flags & IEEE80211_CHAN_NO_UHB_VLP_CLIENT) &&
1208                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_UHB_VLP_CLIENT))
1209                         goto nla_put_failure;
1210                 if ((chan->flags & IEEE80211_CHAN_NO_UHB_AFC_CLIENT) &&
1211                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_UHB_AFC_CLIENT))
1212                         goto nla_put_failure;
1213         }
1214
1215         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1216                         DBM_TO_MBM(chan->max_power)))
1217                 goto nla_put_failure;
1218
1219         if (large) {
1220                 const struct ieee80211_reg_rule *rule =
1221                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1222
1223                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1224                         if (nl80211_msg_put_wmm_rules(msg, rule))
1225                                 goto nla_put_failure;
1226                 }
1227         }
1228
1229         return 0;
1230
1231  nla_put_failure:
1232         return -ENOBUFS;
1233 }
1234
1235 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1236                                   struct cfg80211_txq_stats *txqstats,
1237                                   int attrtype)
1238 {
1239         struct nlattr *txqattr;
1240
1241 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1242         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1243             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1244                 return false;                                             \
1245         } while (0)
1246
1247         txqattr = nla_nest_start_noflag(msg, attrtype);
1248         if (!txqattr)
1249                 return false;
1250
1251         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1252         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1253         PUT_TXQVAL_U32(FLOWS, flows);
1254         PUT_TXQVAL_U32(DROPS, drops);
1255         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1256         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1257         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1258         PUT_TXQVAL_U32(COLLISIONS, collisions);
1259         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1260         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1261         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1262         nla_nest_end(msg, txqattr);
1263
1264 #undef PUT_TXQVAL_U32
1265         return true;
1266 }
1267
1268 /* netlink command implementations */
1269
1270 /**
1271  * nl80211_link_id - return link ID
1272  * @attrs: attributes to look at
1273  *
1274  * Returns: the link ID or 0 if not given
1275  *
1276  * Note this function doesn't do any validation of the link
1277  * ID validity wrt. links that were actually added, so it must
1278  * be called only from ops with %NL80211_FLAG_MLO_VALID_LINK_ID
1279  * or if additional validation is done.
1280  */
1281 static unsigned int nl80211_link_id(struct nlattr **attrs)
1282 {
1283         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1284
1285         if (!linkid)
1286                 return 0;
1287
1288         return nla_get_u8(linkid);
1289 }
1290
1291 static int nl80211_link_id_or_invalid(struct nlattr **attrs)
1292 {
1293         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1294
1295         if (!linkid)
1296                 return -1;
1297
1298         return nla_get_u8(linkid);
1299 }
1300
1301 struct key_parse {
1302         struct key_params p;
1303         int idx;
1304         int type;
1305         bool def, defmgmt, defbeacon;
1306         bool def_uni, def_multi;
1307 };
1308
1309 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1310                                  struct key_parse *k)
1311 {
1312         struct nlattr *tb[NL80211_KEY_MAX + 1];
1313         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1314                                               nl80211_key_policy,
1315                                               info->extack);
1316         if (err)
1317                 return err;
1318
1319         k->def = !!tb[NL80211_KEY_DEFAULT];
1320         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1321         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1322
1323         if (k->def) {
1324                 k->def_uni = true;
1325                 k->def_multi = true;
1326         }
1327         if (k->defmgmt || k->defbeacon)
1328                 k->def_multi = true;
1329
1330         if (tb[NL80211_KEY_IDX])
1331                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1332
1333         if (tb[NL80211_KEY_DATA]) {
1334                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1335                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1336         }
1337
1338         if (tb[NL80211_KEY_SEQ]) {
1339                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1340                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1341         }
1342
1343         if (tb[NL80211_KEY_CIPHER])
1344                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1345
1346         if (tb[NL80211_KEY_TYPE])
1347                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1348
1349         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1350                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1351
1352                 err = nla_parse_nested_deprecated(kdt,
1353                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1354                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1355                                                   nl80211_key_default_policy,
1356                                                   info->extack);
1357                 if (err)
1358                         return err;
1359
1360                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1361                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1362         }
1363
1364         if (tb[NL80211_KEY_MODE])
1365                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1366
1367         return 0;
1368 }
1369
1370 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1371 {
1372         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1373                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1374                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1375         }
1376
1377         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1378                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1379                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1380         }
1381
1382         if (info->attrs[NL80211_ATTR_KEY_IDX])
1383                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1384
1385         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1386                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1387
1388         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1389         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1390
1391         if (k->def) {
1392                 k->def_uni = true;
1393                 k->def_multi = true;
1394         }
1395         if (k->defmgmt)
1396                 k->def_multi = true;
1397
1398         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1399                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1400
1401         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1402                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1403                 int err = nla_parse_nested_deprecated(kdt,
1404                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1405                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1406                                                       nl80211_key_default_policy,
1407                                                       info->extack);
1408                 if (err)
1409                         return err;
1410
1411                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1412                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1413         }
1414
1415         return 0;
1416 }
1417
1418 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1419 {
1420         int err;
1421
1422         memset(k, 0, sizeof(*k));
1423         k->idx = -1;
1424         k->type = -1;
1425
1426         if (info->attrs[NL80211_ATTR_KEY])
1427                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1428         else
1429                 err = nl80211_parse_key_old(info, k);
1430
1431         if (err)
1432                 return err;
1433
1434         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1435             (k->defbeacon ? 1 : 0) > 1) {
1436                 GENL_SET_ERR_MSG(info,
1437                                  "key with multiple default flags is invalid");
1438                 return -EINVAL;
1439         }
1440
1441         if (k->defmgmt || k->defbeacon) {
1442                 if (k->def_uni || !k->def_multi) {
1443                         GENL_SET_ERR_MSG(info,
1444                                          "defmgmt/defbeacon key must be mcast");
1445                         return -EINVAL;
1446                 }
1447         }
1448
1449         if (k->idx != -1) {
1450                 if (k->defmgmt) {
1451                         if (k->idx < 4 || k->idx > 5) {
1452                                 GENL_SET_ERR_MSG(info,
1453                                                  "defmgmt key idx not 4 or 5");
1454                                 return -EINVAL;
1455                         }
1456                 } else if (k->defbeacon) {
1457                         if (k->idx < 6 || k->idx > 7) {
1458                                 GENL_SET_ERR_MSG(info,
1459                                                  "defbeacon key idx not 6 or 7");
1460                                 return -EINVAL;
1461                         }
1462                 } else if (k->def) {
1463                         if (k->idx < 0 || k->idx > 3) {
1464                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1465                                 return -EINVAL;
1466                         }
1467                 } else {
1468                         if (k->idx < 0 || k->idx > 7) {
1469                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1470                                 return -EINVAL;
1471                         }
1472                 }
1473         }
1474
1475         return 0;
1476 }
1477
1478 static struct cfg80211_cached_keys *
1479 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1480                        struct genl_info *info, bool *no_ht)
1481 {
1482         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1483         struct key_parse parse;
1484         struct nlattr *key;
1485         struct cfg80211_cached_keys *result;
1486         int rem, err, def = 0;
1487         bool have_key = false;
1488
1489         nla_for_each_nested(key, keys, rem) {
1490                 have_key = true;
1491                 break;
1492         }
1493
1494         if (!have_key)
1495                 return NULL;
1496
1497         result = kzalloc(sizeof(*result), GFP_KERNEL);
1498         if (!result)
1499                 return ERR_PTR(-ENOMEM);
1500
1501         result->def = -1;
1502
1503         nla_for_each_nested(key, keys, rem) {
1504                 memset(&parse, 0, sizeof(parse));
1505                 parse.idx = -1;
1506
1507                 err = nl80211_parse_key_new(info, key, &parse);
1508                 if (err)
1509                         goto error;
1510                 err = -EINVAL;
1511                 if (!parse.p.key)
1512                         goto error;
1513                 if (parse.idx < 0 || parse.idx > 3) {
1514                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1515                         goto error;
1516                 }
1517                 if (parse.def) {
1518                         if (def) {
1519                                 GENL_SET_ERR_MSG(info,
1520                                                  "only one key can be default");
1521                                 goto error;
1522                         }
1523                         def = 1;
1524                         result->def = parse.idx;
1525                         if (!parse.def_uni || !parse.def_multi)
1526                                 goto error;
1527                 } else if (parse.defmgmt)
1528                         goto error;
1529                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1530                                                      parse.idx, false, NULL);
1531                 if (err)
1532                         goto error;
1533                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1534                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1535                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1536                         err = -EINVAL;
1537                         goto error;
1538                 }
1539                 result->params[parse.idx].cipher = parse.p.cipher;
1540                 result->params[parse.idx].key_len = parse.p.key_len;
1541                 result->params[parse.idx].key = result->data[parse.idx];
1542                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1543
1544                 /* must be WEP key if we got here */
1545                 if (no_ht)
1546                         *no_ht = true;
1547         }
1548
1549         if (result->def < 0) {
1550                 err = -EINVAL;
1551                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1552                 goto error;
1553         }
1554
1555         return result;
1556  error:
1557         kfree(result);
1558         return ERR_PTR(err);
1559 }
1560
1561 static int nl80211_key_allowed(struct wireless_dev *wdev)
1562 {
1563         lockdep_assert_wiphy(wdev->wiphy);
1564
1565         switch (wdev->iftype) {
1566         case NL80211_IFTYPE_AP:
1567         case NL80211_IFTYPE_AP_VLAN:
1568         case NL80211_IFTYPE_P2P_GO:
1569         case NL80211_IFTYPE_MESH_POINT:
1570                 break;
1571         case NL80211_IFTYPE_ADHOC:
1572                 if (wdev->u.ibss.current_bss)
1573                         return 0;
1574                 return -ENOLINK;
1575         case NL80211_IFTYPE_STATION:
1576         case NL80211_IFTYPE_P2P_CLIENT:
1577                 if (wdev->connected)
1578                         return 0;
1579                 return -ENOLINK;
1580         case NL80211_IFTYPE_NAN:
1581                 if (wiphy_ext_feature_isset(wdev->wiphy,
1582                                             NL80211_EXT_FEATURE_SECURE_NAN))
1583                         return 0;
1584                 return -EINVAL;
1585         case NL80211_IFTYPE_UNSPECIFIED:
1586         case NL80211_IFTYPE_OCB:
1587         case NL80211_IFTYPE_MONITOR:
1588         case NL80211_IFTYPE_P2P_DEVICE:
1589         case NL80211_IFTYPE_WDS:
1590         case NUM_NL80211_IFTYPES:
1591                 return -EINVAL;
1592         }
1593
1594         return 0;
1595 }
1596
1597 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1598                                                         u32 freq)
1599 {
1600         struct ieee80211_channel *chan;
1601
1602         chan = ieee80211_get_channel_khz(wiphy, freq);
1603         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1604                 return NULL;
1605         return chan;
1606 }
1607
1608 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1609 {
1610         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1611         int i;
1612
1613         if (!nl_modes)
1614                 goto nla_put_failure;
1615
1616         i = 0;
1617         while (ifmodes) {
1618                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1619                         goto nla_put_failure;
1620                 ifmodes >>= 1;
1621                 i++;
1622         }
1623
1624         nla_nest_end(msg, nl_modes);
1625         return 0;
1626
1627 nla_put_failure:
1628         return -ENOBUFS;
1629 }
1630
1631 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1632                                           struct sk_buff *msg,
1633                                           bool large)
1634 {
1635         struct nlattr *nl_combis;
1636         int i, j;
1637
1638         nl_combis = nla_nest_start_noflag(msg,
1639                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1640         if (!nl_combis)
1641                 goto nla_put_failure;
1642
1643         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1644                 const struct ieee80211_iface_combination *c;
1645                 struct nlattr *nl_combi, *nl_limits;
1646
1647                 c = &wiphy->iface_combinations[i];
1648
1649                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1650                 if (!nl_combi)
1651                         goto nla_put_failure;
1652
1653                 nl_limits = nla_nest_start_noflag(msg,
1654                                                   NL80211_IFACE_COMB_LIMITS);
1655                 if (!nl_limits)
1656                         goto nla_put_failure;
1657
1658                 for (j = 0; j < c->n_limits; j++) {
1659                         struct nlattr *nl_limit;
1660
1661                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1662                         if (!nl_limit)
1663                                 goto nla_put_failure;
1664                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1665                                         c->limits[j].max))
1666                                 goto nla_put_failure;
1667                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1668                                                 c->limits[j].types))
1669                                 goto nla_put_failure;
1670                         nla_nest_end(msg, nl_limit);
1671                 }
1672
1673                 nla_nest_end(msg, nl_limits);
1674
1675                 if (c->beacon_int_infra_match &&
1676                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1677                         goto nla_put_failure;
1678                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1679                                 c->num_different_channels) ||
1680                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1681                                 c->max_interfaces))
1682                         goto nla_put_failure;
1683                 if (large &&
1684                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1685                                 c->radar_detect_widths) ||
1686                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1687                                 c->radar_detect_regions)))
1688                         goto nla_put_failure;
1689                 if (c->beacon_int_min_gcd &&
1690                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1691                                 c->beacon_int_min_gcd))
1692                         goto nla_put_failure;
1693
1694                 nla_nest_end(msg, nl_combi);
1695         }
1696
1697         nla_nest_end(msg, nl_combis);
1698
1699         return 0;
1700 nla_put_failure:
1701         return -ENOBUFS;
1702 }
1703
1704 #ifdef CONFIG_PM
1705 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1706                                         struct sk_buff *msg)
1707 {
1708         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1709         struct nlattr *nl_tcp;
1710
1711         if (!tcp)
1712                 return 0;
1713
1714         nl_tcp = nla_nest_start_noflag(msg,
1715                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1716         if (!nl_tcp)
1717                 return -ENOBUFS;
1718
1719         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1720                         tcp->data_payload_max))
1721                 return -ENOBUFS;
1722
1723         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1724                         tcp->data_payload_max))
1725                 return -ENOBUFS;
1726
1727         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1728                 return -ENOBUFS;
1729
1730         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1731                                 sizeof(*tcp->tok), tcp->tok))
1732                 return -ENOBUFS;
1733
1734         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1735                         tcp->data_interval_max))
1736                 return -ENOBUFS;
1737
1738         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1739                         tcp->wake_payload_max))
1740                 return -ENOBUFS;
1741
1742         nla_nest_end(msg, nl_tcp);
1743         return 0;
1744 }
1745
1746 static int nl80211_send_wowlan(struct sk_buff *msg,
1747                                struct cfg80211_registered_device *rdev,
1748                                bool large)
1749 {
1750         struct nlattr *nl_wowlan;
1751
1752         if (!rdev->wiphy.wowlan)
1753                 return 0;
1754
1755         nl_wowlan = nla_nest_start_noflag(msg,
1756                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1757         if (!nl_wowlan)
1758                 return -ENOBUFS;
1759
1760         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1761              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1762             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1763              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1764             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1765              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1766             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1767              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1768             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1769              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1770             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1771              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1772             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1773              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1774             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1775              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1776                 return -ENOBUFS;
1777
1778         if (rdev->wiphy.wowlan->n_patterns) {
1779                 struct nl80211_pattern_support pat = {
1780                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1781                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1782                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1783                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1784                 };
1785
1786                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1787                             sizeof(pat), &pat))
1788                         return -ENOBUFS;
1789         }
1790
1791         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1792             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1793                         rdev->wiphy.wowlan->max_nd_match_sets))
1794                 return -ENOBUFS;
1795
1796         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1797                 return -ENOBUFS;
1798
1799         nla_nest_end(msg, nl_wowlan);
1800
1801         return 0;
1802 }
1803 #endif
1804
1805 static int nl80211_send_coalesce(struct sk_buff *msg,
1806                                  struct cfg80211_registered_device *rdev)
1807 {
1808         struct nl80211_coalesce_rule_support rule;
1809
1810         if (!rdev->wiphy.coalesce)
1811                 return 0;
1812
1813         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1814         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1815         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1816         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1817         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1818         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1819
1820         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1821                 return -ENOBUFS;
1822
1823         return 0;
1824 }
1825
1826 static int
1827 nl80211_send_iftype_data(struct sk_buff *msg,
1828                          const struct ieee80211_supported_band *sband,
1829                          const struct ieee80211_sband_iftype_data *iftdata)
1830 {
1831         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1832         const struct ieee80211_sta_eht_cap *eht_cap = &iftdata->eht_cap;
1833
1834         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1835                                 iftdata->types_mask))
1836                 return -ENOBUFS;
1837
1838         if (he_cap->has_he) {
1839                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1840                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1841                             he_cap->he_cap_elem.mac_cap_info) ||
1842                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1843                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1844                             he_cap->he_cap_elem.phy_cap_info) ||
1845                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1846                             sizeof(he_cap->he_mcs_nss_supp),
1847                             &he_cap->he_mcs_nss_supp) ||
1848                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1849                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1850                         return -ENOBUFS;
1851         }
1852
1853         if (eht_cap->has_eht && he_cap->has_he) {
1854                 u8 mcs_nss_size, ppe_thresh_size;
1855                 u16 ppe_thres_hdr;
1856                 bool is_ap;
1857
1858                 is_ap = iftdata->types_mask & BIT(NL80211_IFTYPE_AP) ||
1859                         iftdata->types_mask & BIT(NL80211_IFTYPE_P2P_GO);
1860
1861                 mcs_nss_size =
1862                         ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
1863                                                    &eht_cap->eht_cap_elem,
1864                                                    is_ap);
1865
1866                 ppe_thres_hdr = get_unaligned_le16(&eht_cap->eht_ppe_thres[0]);
1867                 ppe_thresh_size =
1868                         ieee80211_eht_ppe_size(ppe_thres_hdr,
1869                                                eht_cap->eht_cap_elem.phy_cap_info);
1870
1871                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MAC,
1872                             sizeof(eht_cap->eht_cap_elem.mac_cap_info),
1873                             eht_cap->eht_cap_elem.mac_cap_info) ||
1874                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PHY,
1875                             sizeof(eht_cap->eht_cap_elem.phy_cap_info),
1876                             eht_cap->eht_cap_elem.phy_cap_info) ||
1877                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MCS_SET,
1878                             mcs_nss_size, &eht_cap->eht_mcs_nss_supp) ||
1879                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PPE,
1880                             ppe_thresh_size, eht_cap->eht_ppe_thres))
1881                         return -ENOBUFS;
1882         }
1883
1884         if (sband->band == NL80211_BAND_6GHZ &&
1885             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1886                     sizeof(iftdata->he_6ghz_capa),
1887                     &iftdata->he_6ghz_capa))
1888                 return -ENOBUFS;
1889
1890         if (iftdata->vendor_elems.data && iftdata->vendor_elems.len &&
1891             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_VENDOR_ELEMS,
1892                     iftdata->vendor_elems.len, iftdata->vendor_elems.data))
1893                 return -ENOBUFS;
1894
1895         return 0;
1896 }
1897
1898 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1899                                       struct ieee80211_supported_band *sband,
1900                                       bool large)
1901 {
1902         struct nlattr *nl_rates, *nl_rate;
1903         struct ieee80211_rate *rate;
1904         int i;
1905
1906         /* add HT info */
1907         if (sband->ht_cap.ht_supported &&
1908             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1909                      sizeof(sband->ht_cap.mcs),
1910                      &sband->ht_cap.mcs) ||
1911              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1912                          sband->ht_cap.cap) ||
1913              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1914                         sband->ht_cap.ampdu_factor) ||
1915              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1916                         sband->ht_cap.ampdu_density)))
1917                 return -ENOBUFS;
1918
1919         /* add VHT info */
1920         if (sband->vht_cap.vht_supported &&
1921             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1922                      sizeof(sband->vht_cap.vht_mcs),
1923                      &sband->vht_cap.vht_mcs) ||
1924              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1925                          sband->vht_cap.cap)))
1926                 return -ENOBUFS;
1927
1928         if (large && sband->n_iftype_data) {
1929                 struct nlattr *nl_iftype_data =
1930                         nla_nest_start_noflag(msg,
1931                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1932                 const struct ieee80211_sband_iftype_data *iftd;
1933                 int err;
1934
1935                 if (!nl_iftype_data)
1936                         return -ENOBUFS;
1937
1938                 for_each_sband_iftype_data(sband, i, iftd) {
1939                         struct nlattr *iftdata;
1940
1941                         iftdata = nla_nest_start_noflag(msg, i + 1);
1942                         if (!iftdata)
1943                                 return -ENOBUFS;
1944
1945                         err = nl80211_send_iftype_data(msg, sband, iftd);
1946                         if (err)
1947                                 return err;
1948
1949                         nla_nest_end(msg, iftdata);
1950                 }
1951
1952                 nla_nest_end(msg, nl_iftype_data);
1953         }
1954
1955         /* add EDMG info */
1956         if (large && sband->edmg_cap.channels &&
1957             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1958                        sband->edmg_cap.channels) ||
1959             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1960                        sband->edmg_cap.bw_config)))
1961
1962                 return -ENOBUFS;
1963
1964         /* add bitrates */
1965         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1966         if (!nl_rates)
1967                 return -ENOBUFS;
1968
1969         for (i = 0; i < sband->n_bitrates; i++) {
1970                 nl_rate = nla_nest_start_noflag(msg, i);
1971                 if (!nl_rate)
1972                         return -ENOBUFS;
1973
1974                 rate = &sband->bitrates[i];
1975                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1976                                 rate->bitrate))
1977                         return -ENOBUFS;
1978                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1979                     nla_put_flag(msg,
1980                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1981                         return -ENOBUFS;
1982
1983                 nla_nest_end(msg, nl_rate);
1984         }
1985
1986         nla_nest_end(msg, nl_rates);
1987
1988         /* S1G capabilities */
1989         if (sband->band == NL80211_BAND_S1GHZ && sband->s1g_cap.s1g &&
1990             (nla_put(msg, NL80211_BAND_ATTR_S1G_CAPA,
1991                      sizeof(sband->s1g_cap.cap),
1992                      sband->s1g_cap.cap) ||
1993              nla_put(msg, NL80211_BAND_ATTR_S1G_MCS_NSS_SET,
1994                      sizeof(sband->s1g_cap.nss_mcs),
1995                      sband->s1g_cap.nss_mcs)))
1996                 return -ENOBUFS;
1997
1998         return 0;
1999 }
2000
2001 static int
2002 nl80211_send_mgmt_stypes(struct sk_buff *msg,
2003                          const struct ieee80211_txrx_stypes *mgmt_stypes)
2004 {
2005         u16 stypes;
2006         struct nlattr *nl_ftypes, *nl_ifs;
2007         enum nl80211_iftype ift;
2008         int i;
2009
2010         if (!mgmt_stypes)
2011                 return 0;
2012
2013         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
2014         if (!nl_ifs)
2015                 return -ENOBUFS;
2016
2017         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
2018                 nl_ftypes = nla_nest_start_noflag(msg, ift);
2019                 if (!nl_ftypes)
2020                         return -ENOBUFS;
2021                 i = 0;
2022                 stypes = mgmt_stypes[ift].tx;
2023                 while (stypes) {
2024                         if ((stypes & 1) &&
2025                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2026                                         (i << 4) | IEEE80211_FTYPE_MGMT))
2027                                 return -ENOBUFS;
2028                         stypes >>= 1;
2029                         i++;
2030                 }
2031                 nla_nest_end(msg, nl_ftypes);
2032         }
2033
2034         nla_nest_end(msg, nl_ifs);
2035
2036         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
2037         if (!nl_ifs)
2038                 return -ENOBUFS;
2039
2040         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
2041                 nl_ftypes = nla_nest_start_noflag(msg, ift);
2042                 if (!nl_ftypes)
2043                         return -ENOBUFS;
2044                 i = 0;
2045                 stypes = mgmt_stypes[ift].rx;
2046                 while (stypes) {
2047                         if ((stypes & 1) &&
2048                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2049                                         (i << 4) | IEEE80211_FTYPE_MGMT))
2050                                 return -ENOBUFS;
2051                         stypes >>= 1;
2052                         i++;
2053                 }
2054                 nla_nest_end(msg, nl_ftypes);
2055         }
2056         nla_nest_end(msg, nl_ifs);
2057
2058         return 0;
2059 }
2060
2061 #define CMD(op, n)                                                      \
2062          do {                                                           \
2063                 if (rdev->ops->op) {                                    \
2064                         i++;                                            \
2065                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
2066                                 goto nla_put_failure;                   \
2067                 }                                                       \
2068         } while (0)
2069
2070 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
2071                                         struct sk_buff *msg)
2072 {
2073         int i = 0;
2074
2075         /*
2076          * do *NOT* add anything into this function, new things need to be
2077          * advertised only to new versions of userspace that can deal with
2078          * the split (and they can't possibly care about new features...
2079          */
2080         CMD(add_virtual_intf, NEW_INTERFACE);
2081         CMD(change_virtual_intf, SET_INTERFACE);
2082         CMD(add_key, NEW_KEY);
2083         CMD(start_ap, START_AP);
2084         CMD(add_station, NEW_STATION);
2085         CMD(add_mpath, NEW_MPATH);
2086         CMD(update_mesh_config, SET_MESH_CONFIG);
2087         CMD(change_bss, SET_BSS);
2088         CMD(auth, AUTHENTICATE);
2089         CMD(assoc, ASSOCIATE);
2090         CMD(deauth, DEAUTHENTICATE);
2091         CMD(disassoc, DISASSOCIATE);
2092         CMD(join_ibss, JOIN_IBSS);
2093         CMD(join_mesh, JOIN_MESH);
2094         CMD(set_pmksa, SET_PMKSA);
2095         CMD(del_pmksa, DEL_PMKSA);
2096         CMD(flush_pmksa, FLUSH_PMKSA);
2097         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
2098                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
2099         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
2100         CMD(mgmt_tx, FRAME);
2101         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
2102         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
2103                 i++;
2104                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
2105                         goto nla_put_failure;
2106         }
2107         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
2108             rdev->ops->join_mesh) {
2109                 i++;
2110                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
2111                         goto nla_put_failure;
2112         }
2113         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
2114                 CMD(tdls_mgmt, TDLS_MGMT);
2115                 CMD(tdls_oper, TDLS_OPER);
2116         }
2117         if (rdev->wiphy.max_sched_scan_reqs)
2118                 CMD(sched_scan_start, START_SCHED_SCAN);
2119         CMD(probe_client, PROBE_CLIENT);
2120         CMD(set_noack_map, SET_NOACK_MAP);
2121         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
2122                 i++;
2123                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
2124                         goto nla_put_failure;
2125         }
2126         CMD(start_p2p_device, START_P2P_DEVICE);
2127         CMD(set_mcast_rate, SET_MCAST_RATE);
2128 #ifdef CONFIG_NL80211_TESTMODE
2129         CMD(testmode_cmd, TESTMODE);
2130 #endif
2131
2132         if (rdev->ops->connect || rdev->ops->auth) {
2133                 i++;
2134                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
2135                         goto nla_put_failure;
2136         }
2137
2138         if (rdev->ops->disconnect || rdev->ops->deauth) {
2139                 i++;
2140                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
2141                         goto nla_put_failure;
2142         }
2143
2144         return i;
2145  nla_put_failure:
2146         return -ENOBUFS;
2147 }
2148
2149 static int
2150 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
2151                            struct sk_buff *msg)
2152 {
2153         struct nlattr *ftm;
2154
2155         if (!cap->ftm.supported)
2156                 return 0;
2157
2158         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
2159         if (!ftm)
2160                 return -ENOBUFS;
2161
2162         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
2163                 return -ENOBUFS;
2164         if (cap->ftm.non_asap &&
2165             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
2166                 return -ENOBUFS;
2167         if (cap->ftm.request_lci &&
2168             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
2169                 return -ENOBUFS;
2170         if (cap->ftm.request_civicloc &&
2171             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
2172                 return -ENOBUFS;
2173         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
2174                         cap->ftm.preambles))
2175                 return -ENOBUFS;
2176         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2177                         cap->ftm.bandwidths))
2178                 return -ENOBUFS;
2179         if (cap->ftm.max_bursts_exponent >= 0 &&
2180             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2181                         cap->ftm.max_bursts_exponent))
2182                 return -ENOBUFS;
2183         if (cap->ftm.max_ftms_per_burst &&
2184             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2185                         cap->ftm.max_ftms_per_burst))
2186                 return -ENOBUFS;
2187         if (cap->ftm.trigger_based &&
2188             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2189                 return -ENOBUFS;
2190         if (cap->ftm.non_trigger_based &&
2191             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2192                 return -ENOBUFS;
2193
2194         nla_nest_end(msg, ftm);
2195         return 0;
2196 }
2197
2198 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2199                                   struct sk_buff *msg)
2200 {
2201         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2202         struct nlattr *pmsr, *caps;
2203
2204         if (!cap)
2205                 return 0;
2206
2207         /*
2208          * we don't need to clean up anything here since the caller
2209          * will genlmsg_cancel() if we fail
2210          */
2211
2212         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2213         if (!pmsr)
2214                 return -ENOBUFS;
2215
2216         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2217                 return -ENOBUFS;
2218
2219         if (cap->report_ap_tsf &&
2220             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2221                 return -ENOBUFS;
2222
2223         if (cap->randomize_mac_addr &&
2224             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2225                 return -ENOBUFS;
2226
2227         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2228         if (!caps)
2229                 return -ENOBUFS;
2230
2231         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2232                 return -ENOBUFS;
2233
2234         nla_nest_end(msg, caps);
2235         nla_nest_end(msg, pmsr);
2236
2237         return 0;
2238 }
2239
2240 static int
2241 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2242                               struct sk_buff *msg)
2243 {
2244         int i;
2245         struct nlattr *nested, *nested_akms;
2246         const struct wiphy_iftype_akm_suites *iftype_akms;
2247
2248         if (!rdev->wiphy.num_iftype_akm_suites ||
2249             !rdev->wiphy.iftype_akm_suites)
2250                 return 0;
2251
2252         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2253         if (!nested)
2254                 return -ENOBUFS;
2255
2256         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2257                 nested_akms = nla_nest_start(msg, i + 1);
2258                 if (!nested_akms)
2259                         return -ENOBUFS;
2260
2261                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2262
2263                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2264                                         iftype_akms->iftypes_mask))
2265                         return -ENOBUFS;
2266
2267                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2268                             sizeof(u32) * iftype_akms->n_akm_suites,
2269                             iftype_akms->akm_suites)) {
2270                         return -ENOBUFS;
2271                 }
2272                 nla_nest_end(msg, nested_akms);
2273         }
2274
2275         nla_nest_end(msg, nested);
2276
2277         return 0;
2278 }
2279
2280 static int
2281 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2282                                struct sk_buff *msg)
2283 {
2284         struct nlattr *supp;
2285
2286         if (!rdev->wiphy.tid_config_support.vif &&
2287             !rdev->wiphy.tid_config_support.peer)
2288                 return 0;
2289
2290         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2291         if (!supp)
2292                 return -ENOSPC;
2293
2294         if (rdev->wiphy.tid_config_support.vif &&
2295             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2296                               rdev->wiphy.tid_config_support.vif,
2297                               NL80211_TID_CONFIG_ATTR_PAD))
2298                 goto fail;
2299
2300         if (rdev->wiphy.tid_config_support.peer &&
2301             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2302                               rdev->wiphy.tid_config_support.peer,
2303                               NL80211_TID_CONFIG_ATTR_PAD))
2304                 goto fail;
2305
2306         /* for now we just use the same value ... makes more sense */
2307         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2308                        rdev->wiphy.tid_config_support.max_retry))
2309                 goto fail;
2310         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2311                        rdev->wiphy.tid_config_support.max_retry))
2312                 goto fail;
2313
2314         nla_nest_end(msg, supp);
2315
2316         return 0;
2317 fail:
2318         nla_nest_cancel(msg, supp);
2319         return -ENOBUFS;
2320 }
2321
2322 static int
2323 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2324                       struct sk_buff *msg)
2325 {
2326         struct nlattr *sar_capa, *specs, *sub_freq_range;
2327         u8 num_freq_ranges;
2328         int i;
2329
2330         if (!rdev->wiphy.sar_capa)
2331                 return 0;
2332
2333         num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2334
2335         sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2336         if (!sar_capa)
2337                 return -ENOSPC;
2338
2339         if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2340                 goto fail;
2341
2342         specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2343         if (!specs)
2344                 goto fail;
2345
2346         /* report supported freq_ranges */
2347         for (i = 0; i < num_freq_ranges; i++) {
2348                 sub_freq_range = nla_nest_start(msg, i + 1);
2349                 if (!sub_freq_range)
2350                         goto fail;
2351
2352                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2353                                 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2354                         goto fail;
2355
2356                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2357                                 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2358                         goto fail;
2359
2360                 nla_nest_end(msg, sub_freq_range);
2361         }
2362
2363         nla_nest_end(msg, specs);
2364         nla_nest_end(msg, sar_capa);
2365
2366         return 0;
2367 fail:
2368         nla_nest_cancel(msg, sar_capa);
2369         return -ENOBUFS;
2370 }
2371
2372 static int nl80211_put_mbssid_support(struct wiphy *wiphy, struct sk_buff *msg)
2373 {
2374         struct nlattr *config;
2375
2376         if (!wiphy->mbssid_max_interfaces)
2377                 return 0;
2378
2379         config = nla_nest_start(msg, NL80211_ATTR_MBSSID_CONFIG);
2380         if (!config)
2381                 return -ENOBUFS;
2382
2383         if (nla_put_u8(msg, NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES,
2384                        wiphy->mbssid_max_interfaces))
2385                 goto fail;
2386
2387         if (wiphy->ema_max_profile_periodicity &&
2388             nla_put_u8(msg,
2389                        NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY,
2390                        wiphy->ema_max_profile_periodicity))
2391                 goto fail;
2392
2393         nla_nest_end(msg, config);
2394         return 0;
2395
2396 fail:
2397         nla_nest_cancel(msg, config);
2398         return -ENOBUFS;
2399 }
2400
2401 struct nl80211_dump_wiphy_state {
2402         s64 filter_wiphy;
2403         long start;
2404         long split_start, band_start, chan_start, capa_start;
2405         bool split;
2406 };
2407
2408 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2409                               enum nl80211_commands cmd,
2410                               struct sk_buff *msg, u32 portid, u32 seq,
2411                               int flags, struct nl80211_dump_wiphy_state *state)
2412 {
2413         void *hdr;
2414         struct nlattr *nl_bands, *nl_band;
2415         struct nlattr *nl_freqs, *nl_freq;
2416         struct nlattr *nl_cmds;
2417         enum nl80211_band band;
2418         struct ieee80211_channel *chan;
2419         int i;
2420         const struct ieee80211_txrx_stypes *mgmt_stypes =
2421                                 rdev->wiphy.mgmt_stypes;
2422         u32 features;
2423
2424         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2425         if (!hdr)
2426                 return -ENOBUFS;
2427
2428         if (WARN_ON(!state))
2429                 return -EINVAL;
2430
2431         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2432             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2433                            wiphy_name(&rdev->wiphy)) ||
2434             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2435                         cfg80211_rdev_list_generation))
2436                 goto nla_put_failure;
2437
2438         if (cmd != NL80211_CMD_NEW_WIPHY)
2439                 goto finish;
2440
2441         switch (state->split_start) {
2442         case 0:
2443                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2444                                rdev->wiphy.retry_short) ||
2445                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2446                                rdev->wiphy.retry_long) ||
2447                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2448                                 rdev->wiphy.frag_threshold) ||
2449                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2450                                 rdev->wiphy.rts_threshold) ||
2451                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2452                                rdev->wiphy.coverage_class) ||
2453                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2454                                rdev->wiphy.max_scan_ssids) ||
2455                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2456                                rdev->wiphy.max_sched_scan_ssids) ||
2457                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2458                                 rdev->wiphy.max_scan_ie_len) ||
2459                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2460                                 rdev->wiphy.max_sched_scan_ie_len) ||
2461                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2462                                rdev->wiphy.max_match_sets))
2463                         goto nla_put_failure;
2464
2465                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2466                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2467                         goto nla_put_failure;
2468                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2469                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2470                         goto nla_put_failure;
2471                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2472                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2473                         goto nla_put_failure;
2474                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2475                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2476                         goto nla_put_failure;
2477                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2478                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2479                         goto nla_put_failure;
2480                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2481                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2482                         goto nla_put_failure;
2483                 state->split_start++;
2484                 if (state->split)
2485                         break;
2486                 fallthrough;
2487         case 1:
2488                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2489                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2490                             rdev->wiphy.cipher_suites))
2491                         goto nla_put_failure;
2492
2493                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2494                                rdev->wiphy.max_num_pmkids))
2495                         goto nla_put_failure;
2496
2497                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2498                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2499                         goto nla_put_failure;
2500
2501                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2502                                 rdev->wiphy.available_antennas_tx) ||
2503                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2504                                 rdev->wiphy.available_antennas_rx))
2505                         goto nla_put_failure;
2506
2507                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2508                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2509                                 rdev->wiphy.probe_resp_offload))
2510                         goto nla_put_failure;
2511
2512                 if ((rdev->wiphy.available_antennas_tx ||
2513                      rdev->wiphy.available_antennas_rx) &&
2514                     rdev->ops->get_antenna) {
2515                         u32 tx_ant = 0, rx_ant = 0;
2516                         int res;
2517
2518                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2519                         if (!res) {
2520                                 if (nla_put_u32(msg,
2521                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2522                                                 tx_ant) ||
2523                                     nla_put_u32(msg,
2524                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2525                                                 rx_ant))
2526                                         goto nla_put_failure;
2527                         }
2528                 }
2529
2530                 state->split_start++;
2531                 if (state->split)
2532                         break;
2533                 fallthrough;
2534         case 2:
2535                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2536                                         rdev->wiphy.interface_modes))
2537                                 goto nla_put_failure;
2538                 state->split_start++;
2539                 if (state->split)
2540                         break;
2541                 fallthrough;
2542         case 3:
2543                 nl_bands = nla_nest_start_noflag(msg,
2544                                                  NL80211_ATTR_WIPHY_BANDS);
2545                 if (!nl_bands)
2546                         goto nla_put_failure;
2547
2548                 for (band = state->band_start;
2549                      band < (state->split ?
2550                                 NUM_NL80211_BANDS :
2551                                 NL80211_BAND_60GHZ + 1);
2552                      band++) {
2553                         struct ieee80211_supported_band *sband;
2554
2555                         /* omit higher bands for ancient software */
2556                         if (band > NL80211_BAND_5GHZ && !state->split)
2557                                 break;
2558
2559                         sband = rdev->wiphy.bands[band];
2560
2561                         if (!sband)
2562                                 continue;
2563
2564                         nl_band = nla_nest_start_noflag(msg, band);
2565                         if (!nl_band)
2566                                 goto nla_put_failure;
2567
2568                         switch (state->chan_start) {
2569                         case 0:
2570                                 if (nl80211_send_band_rateinfo(msg, sband,
2571                                                                state->split))
2572                                         goto nla_put_failure;
2573                                 state->chan_start++;
2574                                 if (state->split)
2575                                         break;
2576                                 fallthrough;
2577                         default:
2578                                 /* add frequencies */
2579                                 nl_freqs = nla_nest_start_noflag(msg,
2580                                                                  NL80211_BAND_ATTR_FREQS);
2581                                 if (!nl_freqs)
2582                                         goto nla_put_failure;
2583
2584                                 for (i = state->chan_start - 1;
2585                                      i < sband->n_channels;
2586                                      i++) {
2587                                         nl_freq = nla_nest_start_noflag(msg,
2588                                                                         i);
2589                                         if (!nl_freq)
2590                                                 goto nla_put_failure;
2591
2592                                         chan = &sband->channels[i];
2593
2594                                         if (nl80211_msg_put_channel(
2595                                                         msg, &rdev->wiphy, chan,
2596                                                         state->split))
2597                                                 goto nla_put_failure;
2598
2599                                         nla_nest_end(msg, nl_freq);
2600                                         if (state->split)
2601                                                 break;
2602                                 }
2603                                 if (i < sband->n_channels)
2604                                         state->chan_start = i + 2;
2605                                 else
2606                                         state->chan_start = 0;
2607                                 nla_nest_end(msg, nl_freqs);
2608                         }
2609
2610                         nla_nest_end(msg, nl_band);
2611
2612                         if (state->split) {
2613                                 /* start again here */
2614                                 if (state->chan_start)
2615                                         band--;
2616                                 break;
2617                         }
2618                 }
2619                 nla_nest_end(msg, nl_bands);
2620
2621                 if (band < NUM_NL80211_BANDS)
2622                         state->band_start = band + 1;
2623                 else
2624                         state->band_start = 0;
2625
2626                 /* if bands & channels are done, continue outside */
2627                 if (state->band_start == 0 && state->chan_start == 0)
2628                         state->split_start++;
2629                 if (state->split)
2630                         break;
2631                 fallthrough;
2632         case 4:
2633                 nl_cmds = nla_nest_start_noflag(msg,
2634                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2635                 if (!nl_cmds)
2636                         goto nla_put_failure;
2637
2638                 i = nl80211_add_commands_unsplit(rdev, msg);
2639                 if (i < 0)
2640                         goto nla_put_failure;
2641                 if (state->split) {
2642                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2643                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2644                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2645                                 CMD(channel_switch, CHANNEL_SWITCH);
2646                         CMD(set_qos_map, SET_QOS_MAP);
2647                         if (rdev->wiphy.features &
2648                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2649                                 CMD(add_tx_ts, ADD_TX_TS);
2650                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2651                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2652                         CMD(update_ft_ies, UPDATE_FT_IES);
2653                         if (rdev->wiphy.sar_capa)
2654                                 CMD(set_sar_specs, SET_SAR_SPECS);
2655                 }
2656 #undef CMD
2657
2658                 nla_nest_end(msg, nl_cmds);
2659                 state->split_start++;
2660                 if (state->split)
2661                         break;
2662                 fallthrough;
2663         case 5:
2664                 if (rdev->ops->remain_on_channel &&
2665                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2666                     nla_put_u32(msg,
2667                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2668                                 rdev->wiphy.max_remain_on_channel_duration))
2669                         goto nla_put_failure;
2670
2671                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2672                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2673                         goto nla_put_failure;
2674
2675                 state->split_start++;
2676                 if (state->split)
2677                         break;
2678                 fallthrough;
2679         case 6:
2680 #ifdef CONFIG_PM
2681                 if (nl80211_send_wowlan(msg, rdev, state->split))
2682                         goto nla_put_failure;
2683                 state->split_start++;
2684                 if (state->split)
2685                         break;
2686 #else
2687                 state->split_start++;
2688 #endif
2689                 fallthrough;
2690         case 7:
2691                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2692                                         rdev->wiphy.software_iftypes))
2693                         goto nla_put_failure;
2694
2695                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2696                                                    state->split))
2697                         goto nla_put_failure;
2698
2699                 state->split_start++;
2700                 if (state->split)
2701                         break;
2702                 fallthrough;
2703         case 8:
2704                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2705                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2706                                 rdev->wiphy.ap_sme_capa))
2707                         goto nla_put_failure;
2708
2709                 features = rdev->wiphy.features;
2710                 /*
2711                  * We can only add the per-channel limit information if the
2712                  * dump is split, otherwise it makes it too big. Therefore
2713                  * only advertise it in that case.
2714                  */
2715                 if (state->split)
2716                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2717                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2718                         goto nla_put_failure;
2719
2720                 if (rdev->wiphy.ht_capa_mod_mask &&
2721                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2722                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2723                             rdev->wiphy.ht_capa_mod_mask))
2724                         goto nla_put_failure;
2725
2726                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2727                     rdev->wiphy.max_acl_mac_addrs &&
2728                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2729                                 rdev->wiphy.max_acl_mac_addrs))
2730                         goto nla_put_failure;
2731
2732                 /*
2733                  * Any information below this point is only available to
2734                  * applications that can deal with it being split. This
2735                  * helps ensure that newly added capabilities don't break
2736                  * older tools by overrunning their buffers.
2737                  *
2738                  * We still increment split_start so that in the split
2739                  * case we'll continue with more data in the next round,
2740                  * but break unconditionally so unsplit data stops here.
2741                  */
2742                 if (state->split)
2743                         state->split_start++;
2744                 else
2745                         state->split_start = 0;
2746                 break;
2747         case 9:
2748                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2749                         goto nla_put_failure;
2750
2751                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2752                                 rdev->wiphy.max_sched_scan_plans) ||
2753                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2754                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2755                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2756                                 rdev->wiphy.max_sched_scan_plan_iterations))
2757                         goto nla_put_failure;
2758
2759                 if (rdev->wiphy.extended_capabilities &&
2760                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2761                              rdev->wiphy.extended_capabilities_len,
2762                              rdev->wiphy.extended_capabilities) ||
2763                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2764                              rdev->wiphy.extended_capabilities_len,
2765                              rdev->wiphy.extended_capabilities_mask)))
2766                         goto nla_put_failure;
2767
2768                 if (rdev->wiphy.vht_capa_mod_mask &&
2769                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2770                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2771                             rdev->wiphy.vht_capa_mod_mask))
2772                         goto nla_put_failure;
2773
2774                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2775                             rdev->wiphy.perm_addr))
2776                         goto nla_put_failure;
2777
2778                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2779                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2780                             rdev->wiphy.addr_mask))
2781                         goto nla_put_failure;
2782
2783                 if (rdev->wiphy.n_addresses > 1) {
2784                         void *attr;
2785
2786                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2787                         if (!attr)
2788                                 goto nla_put_failure;
2789
2790                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2791                                 if (nla_put(msg, i + 1, ETH_ALEN,
2792                                             rdev->wiphy.addresses[i].addr))
2793                                         goto nla_put_failure;
2794
2795                         nla_nest_end(msg, attr);
2796                 }
2797
2798                 state->split_start++;
2799                 break;
2800         case 10:
2801                 if (nl80211_send_coalesce(msg, rdev))
2802                         goto nla_put_failure;
2803
2804                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2805                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2806                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2807                         goto nla_put_failure;
2808
2809                 if (rdev->wiphy.max_ap_assoc_sta &&
2810                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2811                                 rdev->wiphy.max_ap_assoc_sta))
2812                         goto nla_put_failure;
2813
2814                 state->split_start++;
2815                 break;
2816         case 11:
2817                 if (rdev->wiphy.n_vendor_commands) {
2818                         const struct nl80211_vendor_cmd_info *info;
2819                         struct nlattr *nested;
2820
2821                         nested = nla_nest_start_noflag(msg,
2822                                                        NL80211_ATTR_VENDOR_DATA);
2823                         if (!nested)
2824                                 goto nla_put_failure;
2825
2826                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2827                                 info = &rdev->wiphy.vendor_commands[i].info;
2828                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2829                                         goto nla_put_failure;
2830                         }
2831                         nla_nest_end(msg, nested);
2832                 }
2833
2834                 if (rdev->wiphy.n_vendor_events) {
2835                         const struct nl80211_vendor_cmd_info *info;
2836                         struct nlattr *nested;
2837
2838                         nested = nla_nest_start_noflag(msg,
2839                                                        NL80211_ATTR_VENDOR_EVENTS);
2840                         if (!nested)
2841                                 goto nla_put_failure;
2842
2843                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2844                                 info = &rdev->wiphy.vendor_events[i];
2845                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2846                                         goto nla_put_failure;
2847                         }
2848                         nla_nest_end(msg, nested);
2849                 }
2850                 state->split_start++;
2851                 break;
2852         case 12:
2853                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2854                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2855                                rdev->wiphy.max_num_csa_counters))
2856                         goto nla_put_failure;
2857
2858                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2859                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2860                         goto nla_put_failure;
2861
2862                 if (rdev->wiphy.max_sched_scan_reqs &&
2863                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2864                                 rdev->wiphy.max_sched_scan_reqs))
2865                         goto nla_put_failure;
2866
2867                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2868                             sizeof(rdev->wiphy.ext_features),
2869                             rdev->wiphy.ext_features))
2870                         goto nla_put_failure;
2871
2872                 if (rdev->wiphy.bss_select_support) {
2873                         struct nlattr *nested;
2874                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2875
2876                         nested = nla_nest_start_noflag(msg,
2877                                                        NL80211_ATTR_BSS_SELECT);
2878                         if (!nested)
2879                                 goto nla_put_failure;
2880
2881                         i = 0;
2882                         while (bss_select_support) {
2883                                 if ((bss_select_support & 1) &&
2884                                     nla_put_flag(msg, i))
2885                                         goto nla_put_failure;
2886                                 i++;
2887                                 bss_select_support >>= 1;
2888                         }
2889                         nla_nest_end(msg, nested);
2890                 }
2891
2892                 state->split_start++;
2893                 break;
2894         case 13:
2895                 if (rdev->wiphy.num_iftype_ext_capab &&
2896                     rdev->wiphy.iftype_ext_capab) {
2897                         struct nlattr *nested_ext_capab, *nested;
2898
2899                         nested = nla_nest_start_noflag(msg,
2900                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2901                         if (!nested)
2902                                 goto nla_put_failure;
2903
2904                         for (i = state->capa_start;
2905                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2906                                 const struct wiphy_iftype_ext_capab *capab;
2907
2908                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2909
2910                                 nested_ext_capab = nla_nest_start_noflag(msg,
2911                                                                          i);
2912                                 if (!nested_ext_capab ||
2913                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2914                                                 capab->iftype) ||
2915                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2916                                             capab->extended_capabilities_len,
2917                                             capab->extended_capabilities) ||
2918                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2919                                             capab->extended_capabilities_len,
2920                                             capab->extended_capabilities_mask))
2921                                         goto nla_put_failure;
2922
2923                                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO &&
2924                                     (nla_put_u16(msg,
2925                                                  NL80211_ATTR_EML_CAPABILITY,
2926                                                  capab->eml_capabilities) ||
2927                                      nla_put_u16(msg,
2928                                                  NL80211_ATTR_MLD_CAPA_AND_OPS,
2929                                                  capab->mld_capa_and_ops)))
2930                                         goto nla_put_failure;
2931
2932                                 nla_nest_end(msg, nested_ext_capab);
2933                                 if (state->split)
2934                                         break;
2935                         }
2936                         nla_nest_end(msg, nested);
2937                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2938                                 state->capa_start = i + 1;
2939                                 break;
2940                         }
2941                 }
2942
2943                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2944                                 rdev->wiphy.nan_supported_bands))
2945                         goto nla_put_failure;
2946
2947                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2948                                             NL80211_EXT_FEATURE_TXQS)) {
2949                         struct cfg80211_txq_stats txqstats = {};
2950                         int res;
2951
2952                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2953                         if (!res &&
2954                             !nl80211_put_txq_stats(msg, &txqstats,
2955                                                    NL80211_ATTR_TXQ_STATS))
2956                                 goto nla_put_failure;
2957
2958                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2959                                         rdev->wiphy.txq_limit))
2960                                 goto nla_put_failure;
2961                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2962                                         rdev->wiphy.txq_memory_limit))
2963                                 goto nla_put_failure;
2964                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2965                                         rdev->wiphy.txq_quantum))
2966                                 goto nla_put_failure;
2967                 }
2968
2969                 state->split_start++;
2970                 break;
2971         case 14:
2972                 if (nl80211_send_pmsr_capa(rdev, msg))
2973                         goto nla_put_failure;
2974
2975                 state->split_start++;
2976                 break;
2977         case 15:
2978                 if (rdev->wiphy.akm_suites &&
2979                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2980                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2981                             rdev->wiphy.akm_suites))
2982                         goto nla_put_failure;
2983
2984                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2985                         goto nla_put_failure;
2986
2987                 if (nl80211_put_tid_config_support(rdev, msg))
2988                         goto nla_put_failure;
2989                 state->split_start++;
2990                 break;
2991         case 16:
2992                 if (nl80211_put_sar_specs(rdev, msg))
2993                         goto nla_put_failure;
2994
2995                 if (nl80211_put_mbssid_support(&rdev->wiphy, msg))
2996                         goto nla_put_failure;
2997
2998                 if (nla_put_u16(msg, NL80211_ATTR_MAX_NUM_AKM_SUITES,
2999                                 rdev->wiphy.max_num_akm_suites))
3000                         goto nla_put_failure;
3001
3002                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO)
3003                         nla_put_flag(msg, NL80211_ATTR_MLO_SUPPORT);
3004
3005                 if (rdev->wiphy.hw_timestamp_max_peers &&
3006                     nla_put_u16(msg, NL80211_ATTR_MAX_HW_TIMESTAMP_PEERS,
3007                                 rdev->wiphy.hw_timestamp_max_peers))
3008                         goto nla_put_failure;
3009
3010                 /* done */
3011                 state->split_start = 0;
3012                 break;
3013         }
3014  finish:
3015         genlmsg_end(msg, hdr);
3016         return 0;
3017
3018  nla_put_failure:
3019         genlmsg_cancel(msg, hdr);
3020         return -EMSGSIZE;
3021 }
3022
3023 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
3024                                     struct netlink_callback *cb,
3025                                     struct nl80211_dump_wiphy_state *state)
3026 {
3027         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
3028         int ret;
3029
3030         if (!tb)
3031                 return -ENOMEM;
3032
3033         ret = nlmsg_parse_deprecated(cb->nlh,
3034                                      GENL_HDRLEN + nl80211_fam.hdrsize,
3035                                      tb, nl80211_fam.maxattr,
3036                                      nl80211_policy, NULL);
3037         /* ignore parse errors for backward compatibility */
3038         if (ret) {
3039                 ret = 0;
3040                 goto out;
3041         }
3042
3043         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
3044         if (tb[NL80211_ATTR_WIPHY])
3045                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
3046         if (tb[NL80211_ATTR_WDEV])
3047                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
3048         if (tb[NL80211_ATTR_IFINDEX]) {
3049                 struct net_device *netdev;
3050                 struct cfg80211_registered_device *rdev;
3051                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
3052
3053                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
3054                 if (!netdev) {
3055                         ret = -ENODEV;
3056                         goto out;
3057                 }
3058                 if (netdev->ieee80211_ptr) {
3059                         rdev = wiphy_to_rdev(
3060                                 netdev->ieee80211_ptr->wiphy);
3061                         state->filter_wiphy = rdev->wiphy_idx;
3062                 }
3063         }
3064
3065         ret = 0;
3066 out:
3067         kfree(tb);
3068         return ret;
3069 }
3070
3071 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
3072 {
3073         int idx = 0, ret;
3074         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
3075         struct cfg80211_registered_device *rdev;
3076
3077         rtnl_lock();
3078         if (!state) {
3079                 state = kzalloc(sizeof(*state), GFP_KERNEL);
3080                 if (!state) {
3081                         rtnl_unlock();
3082                         return -ENOMEM;
3083                 }
3084                 state->filter_wiphy = -1;
3085                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
3086                 if (ret) {
3087                         kfree(state);
3088                         rtnl_unlock();
3089                         return ret;
3090                 }
3091                 cb->args[0] = (long)state;
3092         }
3093
3094         for_each_rdev(rdev) {
3095                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3096                         continue;
3097                 if (++idx <= state->start)
3098                         continue;
3099                 if (state->filter_wiphy != -1 &&
3100                     state->filter_wiphy != rdev->wiphy_idx)
3101                         continue;
3102                 wiphy_lock(&rdev->wiphy);
3103                 /* attempt to fit multiple wiphy data chunks into the skb */
3104                 do {
3105                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
3106                                                  skb,
3107                                                  NETLINK_CB(cb->skb).portid,
3108                                                  cb->nlh->nlmsg_seq,
3109                                                  NLM_F_MULTI, state);
3110                         if (ret < 0) {
3111                                 /*
3112                                  * If sending the wiphy data didn't fit (ENOBUFS
3113                                  * or EMSGSIZE returned), this SKB is still
3114                                  * empty (so it's not too big because another
3115                                  * wiphy dataset is already in the skb) and
3116                                  * we've not tried to adjust the dump allocation
3117                                  * yet ... then adjust the alloc size to be
3118                                  * bigger, and return 1 but with the empty skb.
3119                                  * This results in an empty message being RX'ed
3120                                  * in userspace, but that is ignored.
3121                                  *
3122                                  * We can then retry with the larger buffer.
3123                                  */
3124                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
3125                                     !skb->len && !state->split &&
3126                                     cb->min_dump_alloc < 4096) {
3127                                         cb->min_dump_alloc = 4096;
3128                                         state->split_start = 0;
3129                                         wiphy_unlock(&rdev->wiphy);
3130                                         rtnl_unlock();
3131                                         return 1;
3132                                 }
3133                                 idx--;
3134                                 break;
3135                         }
3136                 } while (state->split_start > 0);
3137                 wiphy_unlock(&rdev->wiphy);
3138                 break;
3139         }
3140         rtnl_unlock();
3141
3142         state->start = idx;
3143
3144         return skb->len;
3145 }
3146
3147 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
3148 {
3149         kfree((void *)cb->args[0]);
3150         return 0;
3151 }
3152
3153 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
3154 {
3155         struct sk_buff *msg;
3156         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3157         struct nl80211_dump_wiphy_state state = {};
3158
3159         msg = nlmsg_new(4096, GFP_KERNEL);
3160         if (!msg)
3161                 return -ENOMEM;
3162
3163         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
3164                                info->snd_portid, info->snd_seq, 0,
3165                                &state) < 0) {
3166                 nlmsg_free(msg);
3167                 return -ENOBUFS;
3168         }
3169
3170         return genlmsg_reply(msg, info);
3171 }
3172
3173 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
3174         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
3175         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
3176         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
3177         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
3178         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
3179 };
3180
3181 static int parse_txq_params(struct nlattr *tb[],
3182                             struct ieee80211_txq_params *txq_params)
3183 {
3184         u8 ac;
3185
3186         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
3187             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
3188             !tb[NL80211_TXQ_ATTR_AIFS])
3189                 return -EINVAL;
3190
3191         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
3192         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
3193         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
3194         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
3195         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
3196
3197         if (ac >= NL80211_NUM_ACS)
3198                 return -EINVAL;
3199         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
3200         return 0;
3201 }
3202
3203 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
3204 {
3205         /*
3206          * You can only set the channel explicitly for some interfaces,
3207          * most have their channel managed via their respective
3208          * "establish a connection" command (connect, join, ...)
3209          *
3210          * For AP/GO and mesh mode, the channel can be set with the
3211          * channel userspace API, but is only stored and passed to the
3212          * low-level driver when the AP starts or the mesh is joined.
3213          * This is for backward compatibility, userspace can also give
3214          * the channel in the start-ap or join-mesh commands instead.
3215          *
3216          * Monitors are special as they are normally slaved to
3217          * whatever else is going on, so they have their own special
3218          * operation to set the monitor channel if possible.
3219          */
3220         return !wdev ||
3221                 wdev->iftype == NL80211_IFTYPE_AP ||
3222                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
3223                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
3224                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
3225 }
3226
3227 static int nl80211_parse_punct_bitmap(struct cfg80211_registered_device *rdev,
3228                                       struct genl_info *info,
3229                                       const struct cfg80211_chan_def *chandef,
3230                                       u16 *punct_bitmap)
3231 {
3232         if (!wiphy_ext_feature_isset(&rdev->wiphy, NL80211_EXT_FEATURE_PUNCT))
3233                 return -EINVAL;
3234
3235         *punct_bitmap = nla_get_u32(info->attrs[NL80211_ATTR_PUNCT_BITMAP]);
3236         if (!cfg80211_valid_disable_subchannel_bitmap(punct_bitmap, chandef))
3237                 return -EINVAL;
3238
3239         return 0;
3240 }
3241
3242 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
3243                           struct genl_info *info,
3244                           struct cfg80211_chan_def *chandef)
3245 {
3246         struct netlink_ext_ack *extack = info->extack;
3247         struct nlattr **attrs = info->attrs;
3248         u32 control_freq;
3249
3250         if (!attrs[NL80211_ATTR_WIPHY_FREQ]) {
3251                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3252                                     "Frequency is missing");
3253                 return -EINVAL;
3254         }
3255
3256         control_freq = MHZ_TO_KHZ(
3257                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3258         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3259                 control_freq +=
3260                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3261
3262         memset(chandef, 0, sizeof(*chandef));
3263         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3264         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3265         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3266         chandef->freq1_offset = control_freq % 1000;
3267         chandef->center_freq2 = 0;
3268
3269         /* Primary channel not allowed */
3270         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3271                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3272                                     "Channel is disabled");
3273                 return -EINVAL;
3274         }
3275
3276         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3277                 enum nl80211_channel_type chantype;
3278
3279                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3280
3281                 switch (chantype) {
3282                 case NL80211_CHAN_NO_HT:
3283                 case NL80211_CHAN_HT20:
3284                 case NL80211_CHAN_HT40PLUS:
3285                 case NL80211_CHAN_HT40MINUS:
3286                         cfg80211_chandef_create(chandef, chandef->chan,
3287                                                 chantype);
3288                         /* user input for center_freq is incorrect */
3289                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3290                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3291                                 NL_SET_ERR_MSG_ATTR(extack,
3292                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
3293                                                     "bad center frequency 1");
3294                                 return -EINVAL;
3295                         }
3296                         /* center_freq2 must be zero */
3297                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3298                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3299                                 NL_SET_ERR_MSG_ATTR(extack,
3300                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
3301                                                     "center frequency 2 can't be used");
3302                                 return -EINVAL;
3303                         }
3304                         break;
3305                 default:
3306                         NL_SET_ERR_MSG_ATTR(extack,
3307                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3308                                             "invalid channel type");
3309                         return -EINVAL;
3310                 }
3311         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3312                 chandef->width =
3313                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3314                 if (chandef->chan->band == NL80211_BAND_S1GHZ) {
3315                         /* User input error for channel width doesn't match channel  */
3316                         if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
3317                                 NL_SET_ERR_MSG_ATTR(extack,
3318                                                     attrs[NL80211_ATTR_CHANNEL_WIDTH],
3319                                                     "bad channel width");
3320                                 return -EINVAL;
3321                         }
3322                 }
3323                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3324                         chandef->center_freq1 =
3325                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3326                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3327                                 chandef->freq1_offset = nla_get_u32(
3328                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3329                         else
3330                                 chandef->freq1_offset = 0;
3331                 }
3332                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3333                         chandef->center_freq2 =
3334                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3335         }
3336
3337         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3338                 chandef->edmg.channels =
3339                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3340
3341                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3342                         chandef->edmg.bw_config =
3343                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3344         } else {
3345                 chandef->edmg.bw_config = 0;
3346                 chandef->edmg.channels = 0;
3347         }
3348
3349         if (!cfg80211_chandef_valid(chandef)) {
3350                 NL_SET_ERR_MSG(extack, "invalid channel definition");
3351                 return -EINVAL;
3352         }
3353
3354         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3355                                      IEEE80211_CHAN_DISABLED)) {
3356                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3357                 return -EINVAL;
3358         }
3359
3360         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3361              chandef->width == NL80211_CHAN_WIDTH_10) &&
3362             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3363                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3364                 return -EINVAL;
3365         }
3366
3367         return 0;
3368 }
3369
3370 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3371                                  struct net_device *dev,
3372                                  struct genl_info *info,
3373                                  int _link_id)
3374 {
3375         struct cfg80211_chan_def chandef;
3376         int result;
3377         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3378         struct wireless_dev *wdev = NULL;
3379         int link_id = _link_id;
3380
3381         if (dev)
3382                 wdev = dev->ieee80211_ptr;
3383         if (!nl80211_can_set_dev_channel(wdev))
3384                 return -EOPNOTSUPP;
3385         if (wdev)
3386                 iftype = wdev->iftype;
3387
3388         if (link_id < 0) {
3389                 if (wdev && wdev->valid_links)
3390                         return -EINVAL;
3391                 link_id = 0;
3392         }
3393
3394         result = nl80211_parse_chandef(rdev, info, &chandef);
3395         if (result)
3396                 return result;
3397
3398         switch (iftype) {
3399         case NL80211_IFTYPE_AP:
3400         case NL80211_IFTYPE_P2P_GO:
3401                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3402                                                    iftype))
3403                         return -EINVAL;
3404                 if (wdev->links[link_id].ap.beacon_interval) {
3405                         struct ieee80211_channel *cur_chan;
3406
3407                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3408                             !(rdev->wiphy.features &
3409                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE))
3410                                 return -EBUSY;
3411
3412                         /* Only allow dynamic channel width changes */
3413                         cur_chan = wdev->links[link_id].ap.chandef.chan;
3414                         if (chandef.chan != cur_chan)
3415                                 return -EBUSY;
3416
3417                         result = rdev_set_ap_chanwidth(rdev, dev, link_id,
3418                                                        &chandef);
3419                         if (result)
3420                                 return result;
3421                         wdev->links[link_id].ap.chandef = chandef;
3422                 } else {
3423                         wdev->u.ap.preset_chandef = chandef;
3424                 }
3425                 return 0;
3426         case NL80211_IFTYPE_MESH_POINT:
3427                 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3428         case NL80211_IFTYPE_MONITOR:
3429                 return cfg80211_set_monitor_channel(rdev, &chandef);
3430         default:
3431                 break;
3432         }
3433
3434         return -EINVAL;
3435 }
3436
3437 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3438 {
3439         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3440         int link_id = nl80211_link_id_or_invalid(info->attrs);
3441         struct net_device *netdev = info->user_ptr[1];
3442
3443         return __nl80211_set_channel(rdev, netdev, info, link_id);
3444 }
3445
3446 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3447 {
3448         struct cfg80211_registered_device *rdev = NULL;
3449         struct net_device *netdev = NULL;
3450         struct wireless_dev *wdev;
3451         int result = 0, rem_txq_params = 0;
3452         struct nlattr *nl_txq_params;
3453         u32 changed;
3454         u8 retry_short = 0, retry_long = 0;
3455         u32 frag_threshold = 0, rts_threshold = 0;
3456         u8 coverage_class = 0;
3457         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3458
3459         rtnl_lock();
3460         /*
3461          * Try to find the wiphy and netdev. Normally this
3462          * function shouldn't need the netdev, but this is
3463          * done for backward compatibility -- previously
3464          * setting the channel was done per wiphy, but now
3465          * it is per netdev. Previous userland like hostapd
3466          * also passed a netdev to set_wiphy, so that it is
3467          * possible to let that go to the right netdev!
3468          */
3469
3470         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3471                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3472
3473                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3474                 if (netdev && netdev->ieee80211_ptr)
3475                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3476                 else
3477                         netdev = NULL;
3478         }
3479
3480         if (!netdev) {
3481                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3482                                                   info->attrs);
3483                 if (IS_ERR(rdev)) {
3484                         rtnl_unlock();
3485                         return PTR_ERR(rdev);
3486                 }
3487                 wdev = NULL;
3488                 netdev = NULL;
3489                 result = 0;
3490         } else
3491                 wdev = netdev->ieee80211_ptr;
3492
3493         wiphy_lock(&rdev->wiphy);
3494
3495         /*
3496          * end workaround code, by now the rdev is available
3497          * and locked, and wdev may or may not be NULL.
3498          */
3499
3500         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3501                 result = cfg80211_dev_rename(
3502                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3503         rtnl_unlock();
3504
3505         if (result)
3506                 goto out;
3507
3508         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3509                 struct ieee80211_txq_params txq_params;
3510                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3511
3512                 if (!rdev->ops->set_txq_params) {
3513                         result = -EOPNOTSUPP;
3514                         goto out;
3515                 }
3516
3517                 if (!netdev) {
3518                         result = -EINVAL;
3519                         goto out;
3520                 }
3521
3522                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3523                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3524                         result = -EINVAL;
3525                         goto out;
3526                 }
3527
3528                 if (!netif_running(netdev)) {
3529                         result = -ENETDOWN;
3530                         goto out;
3531                 }
3532
3533                 nla_for_each_nested(nl_txq_params,
3534                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3535                                     rem_txq_params) {
3536                         result = nla_parse_nested_deprecated(tb,
3537                                                              NL80211_TXQ_ATTR_MAX,
3538                                                              nl_txq_params,
3539                                                              txq_params_policy,
3540                                                              info->extack);
3541                         if (result)
3542                                 goto out;
3543                         result = parse_txq_params(tb, &txq_params);
3544                         if (result)
3545                                 goto out;
3546
3547                         txq_params.link_id =
3548                                 nl80211_link_id_or_invalid(info->attrs);
3549
3550                         if (txq_params.link_id >= 0 &&
3551                             !(netdev->ieee80211_ptr->valid_links &
3552                               BIT(txq_params.link_id)))
3553                                 result = -ENOLINK;
3554                         else if (txq_params.link_id >= 0 &&
3555                                  !netdev->ieee80211_ptr->valid_links)
3556                                 result = -EINVAL;
3557                         else
3558                                 result = rdev_set_txq_params(rdev, netdev,
3559                                                              &txq_params);
3560                         if (result)
3561                                 goto out;
3562                 }
3563         }
3564
3565         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3566                 int link_id = nl80211_link_id_or_invalid(info->attrs);
3567
3568                 if (wdev) {
3569                         result = __nl80211_set_channel(
3570                                 rdev,
3571                                 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3572                                 info, link_id);
3573                 } else {
3574                         result = __nl80211_set_channel(rdev, netdev, info, link_id);
3575                 }
3576
3577                 if (result)
3578                         goto out;
3579         }
3580
3581         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3582                 struct wireless_dev *txp_wdev = wdev;
3583                 enum nl80211_tx_power_setting type;
3584                 int idx, mbm = 0;
3585
3586                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3587                         txp_wdev = NULL;
3588
3589                 if (!rdev->ops->set_tx_power) {
3590                         result = -EOPNOTSUPP;
3591                         goto out;
3592                 }
3593
3594                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3595                 type = nla_get_u32(info->attrs[idx]);
3596
3597                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3598                     (type != NL80211_TX_POWER_AUTOMATIC)) {
3599                         result = -EINVAL;
3600                         goto out;
3601                 }
3602
3603                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3604                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3605                         mbm = nla_get_u32(info->attrs[idx]);
3606                 }
3607
3608                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3609                 if (result)
3610                         goto out;
3611         }
3612
3613         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3614             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3615                 u32 tx_ant, rx_ant;
3616
3617                 if ((!rdev->wiphy.available_antennas_tx &&
3618                      !rdev->wiphy.available_antennas_rx) ||
3619                     !rdev->ops->set_antenna) {
3620                         result = -EOPNOTSUPP;
3621                         goto out;
3622                 }
3623
3624                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3625                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3626
3627                 /* reject antenna configurations which don't match the
3628                  * available antenna masks, except for the "all" mask */
3629                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3630                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3631                         result = -EINVAL;
3632                         goto out;
3633                 }
3634
3635                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3636                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3637
3638                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3639                 if (result)
3640                         goto out;
3641         }
3642
3643         changed = 0;
3644
3645         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3646                 retry_short = nla_get_u8(
3647                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3648
3649                 changed |= WIPHY_PARAM_RETRY_SHORT;
3650         }
3651
3652         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3653                 retry_long = nla_get_u8(
3654                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3655
3656                 changed |= WIPHY_PARAM_RETRY_LONG;
3657         }
3658
3659         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3660                 frag_threshold = nla_get_u32(
3661                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3662                 if (frag_threshold < 256) {
3663                         result = -EINVAL;
3664                         goto out;
3665                 }
3666
3667                 if (frag_threshold != (u32) -1) {
3668                         /*
3669                          * Fragments (apart from the last one) are required to
3670                          * have even length. Make the fragmentation code
3671                          * simpler by stripping LSB should someone try to use
3672                          * odd threshold value.
3673                          */
3674                         frag_threshold &= ~0x1;
3675                 }
3676                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3677         }
3678
3679         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3680                 rts_threshold = nla_get_u32(
3681                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3682                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3683         }
3684
3685         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3686                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3687                         result = -EINVAL;
3688                         goto out;
3689                 }
3690
3691                 coverage_class = nla_get_u8(
3692                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3693                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3694         }
3695
3696         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3697                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3698                         result = -EOPNOTSUPP;
3699                         goto out;
3700                 }
3701
3702                 changed |= WIPHY_PARAM_DYN_ACK;
3703         }
3704
3705         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3706                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3707                                              NL80211_EXT_FEATURE_TXQS)) {
3708                         result = -EOPNOTSUPP;
3709                         goto out;
3710                 }
3711                 txq_limit = nla_get_u32(
3712                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3713                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3714         }
3715
3716         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3717                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3718                                              NL80211_EXT_FEATURE_TXQS)) {
3719                         result = -EOPNOTSUPP;
3720                         goto out;
3721                 }
3722                 txq_memory_limit = nla_get_u32(
3723                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3724                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3725         }
3726
3727         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3728                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3729                                              NL80211_EXT_FEATURE_TXQS)) {
3730                         result = -EOPNOTSUPP;
3731                         goto out;
3732                 }
3733                 txq_quantum = nla_get_u32(
3734                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3735                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3736         }
3737
3738         if (changed) {
3739                 u8 old_retry_short, old_retry_long;
3740                 u32 old_frag_threshold, old_rts_threshold;
3741                 u8 old_coverage_class;
3742                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3743
3744                 if (!rdev->ops->set_wiphy_params) {
3745                         result = -EOPNOTSUPP;
3746                         goto out;
3747                 }
3748
3749                 old_retry_short = rdev->wiphy.retry_short;
3750                 old_retry_long = rdev->wiphy.retry_long;
3751                 old_frag_threshold = rdev->wiphy.frag_threshold;
3752                 old_rts_threshold = rdev->wiphy.rts_threshold;
3753                 old_coverage_class = rdev->wiphy.coverage_class;
3754                 old_txq_limit = rdev->wiphy.txq_limit;
3755                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3756                 old_txq_quantum = rdev->wiphy.txq_quantum;
3757
3758                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3759                         rdev->wiphy.retry_short = retry_short;
3760                 if (changed & WIPHY_PARAM_RETRY_LONG)
3761                         rdev->wiphy.retry_long = retry_long;
3762                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3763                         rdev->wiphy.frag_threshold = frag_threshold;
3764                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3765                         rdev->wiphy.rts_threshold = rts_threshold;
3766                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3767                         rdev->wiphy.coverage_class = coverage_class;
3768                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3769                         rdev->wiphy.txq_limit = txq_limit;
3770                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3771                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3772                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3773                         rdev->wiphy.txq_quantum = txq_quantum;
3774
3775                 result = rdev_set_wiphy_params(rdev, changed);
3776                 if (result) {
3777                         rdev->wiphy.retry_short = old_retry_short;
3778                         rdev->wiphy.retry_long = old_retry_long;
3779                         rdev->wiphy.frag_threshold = old_frag_threshold;
3780                         rdev->wiphy.rts_threshold = old_rts_threshold;
3781                         rdev->wiphy.coverage_class = old_coverage_class;
3782                         rdev->wiphy.txq_limit = old_txq_limit;
3783                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3784                         rdev->wiphy.txq_quantum = old_txq_quantum;
3785                         goto out;
3786                 }
3787         }
3788
3789         result = 0;
3790
3791 out:
3792         wiphy_unlock(&rdev->wiphy);
3793         return result;
3794 }
3795
3796 int nl80211_send_chandef(struct sk_buff *msg, const struct cfg80211_chan_def *chandef)
3797 {
3798         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3799                 return -EINVAL;
3800
3801         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3802                         chandef->chan->center_freq))
3803                 return -ENOBUFS;
3804         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3805                         chandef->chan->freq_offset))
3806                 return -ENOBUFS;
3807         switch (chandef->width) {
3808         case NL80211_CHAN_WIDTH_20_NOHT:
3809         case NL80211_CHAN_WIDTH_20:
3810         case NL80211_CHAN_WIDTH_40:
3811                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3812                                 cfg80211_get_chandef_type(chandef)))
3813                         return -ENOBUFS;
3814                 break;
3815         default:
3816                 break;
3817         }
3818         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3819                 return -ENOBUFS;
3820         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3821                 return -ENOBUFS;
3822         if (chandef->center_freq2 &&
3823             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3824                 return -ENOBUFS;
3825         return 0;
3826 }
3827 EXPORT_SYMBOL(nl80211_send_chandef);
3828
3829 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3830                               struct cfg80211_registered_device *rdev,
3831                               struct wireless_dev *wdev,
3832                               enum nl80211_commands cmd)
3833 {
3834         struct net_device *dev = wdev->netdev;
3835         void *hdr;
3836
3837         lockdep_assert_wiphy(&rdev->wiphy);
3838
3839         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3840                 cmd != NL80211_CMD_DEL_INTERFACE &&
3841                 cmd != NL80211_CMD_SET_INTERFACE);
3842
3843         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3844         if (!hdr)
3845                 return -1;
3846
3847         if (dev &&
3848             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3849              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3850                 goto nla_put_failure;
3851
3852         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3853             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3854             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3855                               NL80211_ATTR_PAD) ||
3856             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3857             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3858                         rdev->devlist_generation ^
3859                         (cfg80211_rdev_list_generation << 2)) ||
3860             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3861                 goto nla_put_failure;
3862
3863         if (rdev->ops->get_channel && !wdev->valid_links) {
3864                 struct cfg80211_chan_def chandef = {};
3865                 int ret;
3866
3867                 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
3868                 if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3869                         goto nla_put_failure;
3870         }
3871
3872         if (rdev->ops->get_tx_power) {
3873                 int dbm, ret;
3874
3875                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3876                 if (ret == 0 &&
3877                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3878                                 DBM_TO_MBM(dbm)))
3879                         goto nla_put_failure;
3880         }
3881
3882         switch (wdev->iftype) {
3883         case NL80211_IFTYPE_AP:
3884         case NL80211_IFTYPE_P2P_GO:
3885                 if (wdev->u.ap.ssid_len &&
3886                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
3887                             wdev->u.ap.ssid))
3888                         goto nla_put_failure;
3889                 break;
3890         case NL80211_IFTYPE_STATION:
3891         case NL80211_IFTYPE_P2P_CLIENT:
3892                 if (wdev->u.client.ssid_len &&
3893                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.client.ssid_len,
3894                             wdev->u.client.ssid))
3895                         goto nla_put_failure;
3896                 break;
3897         case NL80211_IFTYPE_ADHOC:
3898                 if (wdev->u.ibss.ssid_len &&
3899                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ibss.ssid_len,
3900                             wdev->u.ibss.ssid))
3901                         goto nla_put_failure;
3902                 break;
3903         default:
3904                 /* nothing */
3905                 break;
3906         }
3907
3908         if (rdev->ops->get_txq_stats) {
3909                 struct cfg80211_txq_stats txqstats = {};
3910                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3911
3912                 if (ret == 0 &&
3913                     !nl80211_put_txq_stats(msg, &txqstats,
3914                                            NL80211_ATTR_TXQ_STATS))
3915                         goto nla_put_failure;
3916         }
3917
3918         if (wdev->valid_links) {
3919                 unsigned int link_id;
3920                 struct nlattr *links = nla_nest_start(msg,
3921                                                       NL80211_ATTR_MLO_LINKS);
3922
3923                 if (!links)
3924                         goto nla_put_failure;
3925
3926                 for_each_valid_link(wdev, link_id) {
3927                         struct nlattr *link = nla_nest_start(msg, link_id + 1);
3928                         struct cfg80211_chan_def chandef = {};
3929                         int ret;
3930
3931                         if (!link)
3932                                 goto nla_put_failure;
3933
3934                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
3935                                 goto nla_put_failure;
3936                         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
3937                                     wdev->links[link_id].addr))
3938                                 goto nla_put_failure;
3939
3940                         ret = rdev_get_channel(rdev, wdev, link_id, &chandef);
3941                         if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3942                                 goto nla_put_failure;
3943
3944                         nla_nest_end(msg, link);
3945                 }
3946
3947                 nla_nest_end(msg, links);
3948         }
3949
3950         genlmsg_end(msg, hdr);
3951         return 0;
3952
3953  nla_put_failure:
3954         genlmsg_cancel(msg, hdr);
3955         return -EMSGSIZE;
3956 }
3957
3958 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3959 {
3960         int wp_idx = 0;
3961         int if_idx = 0;
3962         int wp_start = cb->args[0];
3963         int if_start = cb->args[1];
3964         int filter_wiphy = -1;
3965         struct cfg80211_registered_device *rdev;
3966         struct wireless_dev *wdev;
3967         int ret;
3968
3969         rtnl_lock();
3970         if (!cb->args[2]) {
3971                 struct nl80211_dump_wiphy_state state = {
3972                         .filter_wiphy = -1,
3973                 };
3974
3975                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3976                 if (ret)
3977                         goto out_unlock;
3978
3979                 filter_wiphy = state.filter_wiphy;
3980
3981                 /*
3982                  * if filtering, set cb->args[2] to +1 since 0 is the default
3983                  * value needed to determine that parsing is necessary.
3984                  */
3985                 if (filter_wiphy >= 0)
3986                         cb->args[2] = filter_wiphy + 1;
3987                 else
3988                         cb->args[2] = -1;
3989         } else if (cb->args[2] > 0) {
3990                 filter_wiphy = cb->args[2] - 1;
3991         }
3992
3993         for_each_rdev(rdev) {
3994                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3995                         continue;
3996                 if (wp_idx < wp_start) {
3997                         wp_idx++;
3998                         continue;
3999                 }
4000
4001                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
4002                         continue;
4003
4004                 if_idx = 0;
4005
4006                 wiphy_lock(&rdev->wiphy);
4007                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4008                         if (if_idx < if_start) {
4009                                 if_idx++;
4010                                 continue;
4011                         }
4012                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
4013                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
4014                                                rdev, wdev,
4015                                                NL80211_CMD_NEW_INTERFACE) < 0) {
4016                                 wiphy_unlock(&rdev->wiphy);
4017                                 goto out;
4018                         }
4019                         if_idx++;
4020                 }
4021                 wiphy_unlock(&rdev->wiphy);
4022
4023                 if_start = 0;
4024                 wp_idx++;
4025         }
4026  out:
4027         cb->args[0] = wp_idx;
4028         cb->args[1] = if_idx;
4029
4030         ret = skb->len;
4031  out_unlock:
4032         rtnl_unlock();
4033
4034         return ret;
4035 }
4036
4037 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
4038 {
4039         struct sk_buff *msg;
4040         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4041         struct wireless_dev *wdev = info->user_ptr[1];
4042
4043         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4044         if (!msg)
4045                 return -ENOMEM;
4046
4047         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4048                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4049                 nlmsg_free(msg);
4050                 return -ENOBUFS;
4051         }
4052
4053         return genlmsg_reply(msg, info);
4054 }
4055
4056 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
4057         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
4058         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
4059         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
4060         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
4061         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
4062         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
4063 };
4064
4065 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
4066 {
4067         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
4068         int flag;
4069
4070         *mntrflags = 0;
4071
4072         if (!nla)
4073                 return -EINVAL;
4074
4075         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
4076                 return -EINVAL;
4077
4078         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
4079                 if (flags[flag])
4080                         *mntrflags |= (1<<flag);
4081
4082         *mntrflags |= MONITOR_FLAG_CHANGED;
4083
4084         return 0;
4085 }
4086
4087 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
4088                                      enum nl80211_iftype type,
4089                                      struct genl_info *info,
4090                                      struct vif_params *params)
4091 {
4092         bool change = false;
4093         int err;
4094
4095         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
4096                 if (type != NL80211_IFTYPE_MONITOR)
4097                         return -EINVAL;
4098
4099                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
4100                                           &params->flags);
4101                 if (err)
4102                         return err;
4103
4104                 change = true;
4105         }
4106
4107         if (params->flags & MONITOR_FLAG_ACTIVE &&
4108             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
4109                 return -EOPNOTSUPP;
4110
4111         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
4112                 const u8 *mumimo_groups;
4113                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4114
4115                 if (type != NL80211_IFTYPE_MONITOR)
4116                         return -EINVAL;
4117
4118                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4119                         return -EOPNOTSUPP;
4120
4121                 mumimo_groups =
4122                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
4123
4124                 /* bits 0 and 63 are reserved and must be zero */
4125                 if ((mumimo_groups[0] & BIT(0)) ||
4126                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
4127                         return -EINVAL;
4128
4129                 params->vht_mumimo_groups = mumimo_groups;
4130                 change = true;
4131         }
4132
4133         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
4134                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4135
4136                 if (type != NL80211_IFTYPE_MONITOR)
4137                         return -EINVAL;
4138
4139                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4140                         return -EOPNOTSUPP;
4141
4142                 params->vht_mumimo_follow_addr =
4143                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
4144                 change = true;
4145         }
4146
4147         return change ? 1 : 0;
4148 }
4149
4150 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
4151                                struct net_device *netdev, u8 use_4addr,
4152                                enum nl80211_iftype iftype)
4153 {
4154         if (!use_4addr) {
4155                 if (netdev && netif_is_bridge_port(netdev))
4156                         return -EBUSY;
4157                 return 0;
4158         }
4159
4160         switch (iftype) {
4161         case NL80211_IFTYPE_AP_VLAN:
4162                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
4163                         return 0;
4164                 break;
4165         case NL80211_IFTYPE_STATION:
4166                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
4167                         return 0;
4168                 break;
4169         default:
4170                 break;
4171         }
4172
4173         return -EOPNOTSUPP;
4174 }
4175
4176 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
4177 {
4178         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4179         struct vif_params params;
4180         int err;
4181         enum nl80211_iftype otype, ntype;
4182         struct net_device *dev = info->user_ptr[1];
4183         bool change = false;
4184
4185         memset(&params, 0, sizeof(params));
4186
4187         otype = ntype = dev->ieee80211_ptr->iftype;
4188
4189         if (info->attrs[NL80211_ATTR_IFTYPE]) {
4190                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4191                 if (otype != ntype)
4192                         change = true;
4193         }
4194
4195         if (info->attrs[NL80211_ATTR_MESH_ID]) {
4196                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4197
4198                 if (ntype != NL80211_IFTYPE_MESH_POINT)
4199                         return -EINVAL;
4200                 if (netif_running(dev))
4201                         return -EBUSY;
4202
4203                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4204                              IEEE80211_MAX_MESH_ID_LEN);
4205                 wdev->u.mesh.id_up_len =
4206                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4207                 memcpy(wdev->u.mesh.id,
4208                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4209                        wdev->u.mesh.id_up_len);
4210         }
4211
4212         if (info->attrs[NL80211_ATTR_4ADDR]) {
4213                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4214                 change = true;
4215                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
4216                 if (err)
4217                         return err;
4218         } else {
4219                 params.use_4addr = -1;
4220         }
4221
4222         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
4223         if (err < 0)
4224                 return err;
4225         if (err > 0)
4226                 change = true;
4227
4228         if (change)
4229                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
4230         else
4231                 err = 0;
4232
4233         if (!err && params.use_4addr != -1)
4234                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
4235
4236         if (change && !err) {
4237                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4238
4239                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
4240         }
4241
4242         return err;
4243 }
4244
4245 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4246 {
4247         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4248         struct vif_params params;
4249         struct wireless_dev *wdev;
4250         struct sk_buff *msg;
4251         int err;
4252         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
4253
4254         memset(&params, 0, sizeof(params));
4255
4256         if (!info->attrs[NL80211_ATTR_IFNAME])
4257                 return -EINVAL;
4258
4259         if (info->attrs[NL80211_ATTR_IFTYPE])
4260                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4261
4262         if (!rdev->ops->add_virtual_intf)
4263                 return -EOPNOTSUPP;
4264
4265         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
4266              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
4267             info->attrs[NL80211_ATTR_MAC]) {
4268                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
4269                            ETH_ALEN);
4270                 if (!is_valid_ether_addr(params.macaddr))
4271                         return -EADDRNOTAVAIL;
4272         }
4273
4274         if (info->attrs[NL80211_ATTR_4ADDR]) {
4275                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4276                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
4277                 if (err)
4278                         return err;
4279         }
4280
4281         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
4282                 return -EOPNOTSUPP;
4283
4284         err = nl80211_parse_mon_options(rdev, type, info, &params);
4285         if (err < 0)
4286                 return err;
4287
4288         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4289         if (!msg)
4290                 return -ENOMEM;
4291
4292         wdev = rdev_add_virtual_intf(rdev,
4293                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
4294                                 NET_NAME_USER, type, &params);
4295         if (WARN_ON(!wdev)) {
4296                 nlmsg_free(msg);
4297                 return -EPROTO;
4298         } else if (IS_ERR(wdev)) {
4299                 nlmsg_free(msg);
4300                 return PTR_ERR(wdev);
4301         }
4302
4303         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4304                 wdev->owner_nlportid = info->snd_portid;
4305
4306         switch (type) {
4307         case NL80211_IFTYPE_MESH_POINT:
4308                 if (!info->attrs[NL80211_ATTR_MESH_ID])
4309                         break;
4310                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4311                              IEEE80211_MAX_MESH_ID_LEN);
4312                 wdev->u.mesh.id_up_len =
4313                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4314                 memcpy(wdev->u.mesh.id,
4315                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4316                        wdev->u.mesh.id_up_len);
4317                 break;
4318         case NL80211_IFTYPE_NAN:
4319         case NL80211_IFTYPE_P2P_DEVICE:
4320                 /*
4321                  * P2P Device and NAN do not have a netdev, so don't go
4322                  * through the netdev notifier and must be added here
4323                  */
4324                 cfg80211_init_wdev(wdev);
4325                 cfg80211_register_wdev(rdev, wdev);
4326                 break;
4327         default:
4328                 break;
4329         }
4330
4331         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4332                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4333                 nlmsg_free(msg);
4334                 return -ENOBUFS;
4335         }
4336
4337         return genlmsg_reply(msg, info);
4338 }
4339
4340 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4341 {
4342         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4343         int ret;
4344
4345         /* to avoid failing a new interface creation due to pending removal */
4346         cfg80211_destroy_ifaces(rdev);
4347
4348         wiphy_lock(&rdev->wiphy);
4349         ret = _nl80211_new_interface(skb, info);
4350         wiphy_unlock(&rdev->wiphy);
4351
4352         return ret;
4353 }
4354
4355 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4356 {
4357         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4358         struct wireless_dev *wdev = info->user_ptr[1];
4359
4360         if (!rdev->ops->del_virtual_intf)
4361                 return -EOPNOTSUPP;
4362
4363         /*
4364          * We hold RTNL, so this is safe, without RTNL opencount cannot
4365          * reach 0, and thus the rdev cannot be deleted.
4366          *
4367          * We need to do it for the dev_close(), since that will call
4368          * the netdev notifiers, and we need to acquire the mutex there
4369          * but don't know if we get there from here or from some other
4370          * place (e.g. "ip link set ... down").
4371          */
4372         mutex_unlock(&rdev->wiphy.mtx);
4373
4374         /*
4375          * If we remove a wireless device without a netdev then clear
4376          * user_ptr[1] so that nl80211_post_doit won't dereference it
4377          * to check if it needs to do dev_put(). Otherwise it crashes
4378          * since the wdev has been freed, unlike with a netdev where
4379          * we need the dev_put() for the netdev to really be freed.
4380          */
4381         if (!wdev->netdev)
4382                 info->user_ptr[1] = NULL;
4383         else
4384                 dev_close(wdev->netdev);
4385
4386         mutex_lock(&rdev->wiphy.mtx);
4387
4388         return cfg80211_remove_virtual_intf(rdev, wdev);
4389 }
4390
4391 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4392 {
4393         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4394         struct net_device *dev = info->user_ptr[1];
4395         u16 noack_map;
4396
4397         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4398                 return -EINVAL;
4399
4400         if (!rdev->ops->set_noack_map)
4401                 return -EOPNOTSUPP;
4402
4403         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4404
4405         return rdev_set_noack_map(rdev, dev, noack_map);
4406 }
4407
4408 static int nl80211_validate_key_link_id(struct genl_info *info,
4409                                         struct wireless_dev *wdev,
4410                                         int link_id, bool pairwise)
4411 {
4412         if (pairwise) {
4413                 if (link_id != -1) {
4414                         GENL_SET_ERR_MSG(info,
4415                                          "link ID not allowed for pairwise key");
4416                         return -EINVAL;
4417                 }
4418
4419                 return 0;
4420         }
4421
4422         if (wdev->valid_links) {
4423                 if (link_id == -1) {
4424                         GENL_SET_ERR_MSG(info,
4425                                          "link ID must for MLO group key");
4426                         return -EINVAL;
4427                 }
4428                 if (!(wdev->valid_links & BIT(link_id))) {
4429                         GENL_SET_ERR_MSG(info, "invalid link ID for MLO group key");
4430                         return -EINVAL;
4431                 }
4432         } else if (link_id != -1) {
4433                 GENL_SET_ERR_MSG(info, "link ID not allowed for non-MLO group key");
4434                 return -EINVAL;
4435         }
4436
4437         return 0;
4438 }
4439
4440 struct get_key_cookie {
4441         struct sk_buff *msg;
4442         int error;
4443         int idx;
4444 };
4445
4446 static void get_key_callback(void *c, struct key_params *params)
4447 {
4448         struct nlattr *key;
4449         struct get_key_cookie *cookie = c;
4450
4451         if ((params->key &&
4452              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4453                      params->key_len, params->key)) ||
4454             (params->seq &&
4455              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4456                      params->seq_len, params->seq)) ||
4457             (params->cipher &&
4458              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4459                          params->cipher)))
4460                 goto nla_put_failure;
4461
4462         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4463         if (!key)
4464                 goto nla_put_failure;
4465
4466         if ((params->key &&
4467              nla_put(cookie->msg, NL80211_KEY_DATA,
4468                      params->key_len, params->key)) ||
4469             (params->seq &&
4470              nla_put(cookie->msg, NL80211_KEY_SEQ,
4471                      params->seq_len, params->seq)) ||
4472             (params->cipher &&
4473              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4474                          params->cipher)))
4475                 goto nla_put_failure;
4476
4477         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4478                 goto nla_put_failure;
4479
4480         nla_nest_end(cookie->msg, key);
4481
4482         return;
4483  nla_put_failure:
4484         cookie->error = 1;
4485 }
4486
4487 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4488 {
4489         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4490         int err;
4491         struct net_device *dev = info->user_ptr[1];
4492         u8 key_idx = 0;
4493         const u8 *mac_addr = NULL;
4494         bool pairwise;
4495         struct get_key_cookie cookie = {
4496                 .error = 0,
4497         };
4498         void *hdr;
4499         struct sk_buff *msg;
4500         bool bigtk_support = false;
4501         int link_id = nl80211_link_id_or_invalid(info->attrs);
4502         struct wireless_dev *wdev = dev->ieee80211_ptr;
4503
4504         if (wiphy_ext_feature_isset(&rdev->wiphy,
4505                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4506                 bigtk_support = true;
4507
4508         if ((wdev->iftype == NL80211_IFTYPE_STATION ||
4509              wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4510             wiphy_ext_feature_isset(&rdev->wiphy,
4511                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4512                 bigtk_support = true;
4513
4514         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4515                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4516
4517                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4518                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4519                         return -EINVAL;
4520                 }
4521         }
4522
4523         if (info->attrs[NL80211_ATTR_MAC])
4524                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4525
4526         pairwise = !!mac_addr;
4527         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4528                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4529
4530                 if (kt != NL80211_KEYTYPE_GROUP &&
4531                     kt != NL80211_KEYTYPE_PAIRWISE)
4532                         return -EINVAL;
4533                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4534         }
4535
4536         if (!rdev->ops->get_key)
4537                 return -EOPNOTSUPP;
4538
4539         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4540                 return -ENOENT;
4541
4542         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4543         if (!msg)
4544                 return -ENOMEM;
4545
4546         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4547                              NL80211_CMD_NEW_KEY);
4548         if (!hdr)
4549                 goto nla_put_failure;
4550
4551         cookie.msg = msg;
4552         cookie.idx = key_idx;
4553
4554         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4555             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4556                 goto nla_put_failure;
4557         if (mac_addr &&
4558             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4559                 goto nla_put_failure;
4560
4561         err = nl80211_validate_key_link_id(info, wdev, link_id, pairwise);
4562         if (err)
4563                 goto free_msg;
4564
4565         err = rdev_get_key(rdev, dev, link_id, key_idx, pairwise, mac_addr,
4566                            &cookie, get_key_callback);
4567
4568         if (err)
4569                 goto free_msg;
4570
4571         if (cookie.error)
4572                 goto nla_put_failure;
4573
4574         genlmsg_end(msg, hdr);
4575         return genlmsg_reply(msg, info);
4576
4577  nla_put_failure:
4578         err = -ENOBUFS;
4579  free_msg:
4580         nlmsg_free(msg);
4581         return err;
4582 }
4583
4584 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4585 {
4586         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4587         struct key_parse key;
4588         int err;
4589         struct net_device *dev = info->user_ptr[1];
4590         int link_id = nl80211_link_id_or_invalid(info->attrs);
4591         struct wireless_dev *wdev = dev->ieee80211_ptr;
4592
4593         err = nl80211_parse_key(info, &key);
4594         if (err)
4595                 return err;
4596
4597         if (key.idx < 0)
4598                 return -EINVAL;
4599
4600         /* Only support setting default key and
4601          * Extended Key ID action NL80211_KEY_SET_TX.
4602          */
4603         if (!key.def && !key.defmgmt && !key.defbeacon &&
4604             !(key.p.mode == NL80211_KEY_SET_TX))
4605                 return -EINVAL;
4606
4607         if (key.def) {
4608                 if (!rdev->ops->set_default_key)
4609                         return -EOPNOTSUPP;
4610
4611                 err = nl80211_key_allowed(wdev);
4612                 if (err)
4613                         return err;
4614
4615                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4616                 if (err)
4617                         return err;
4618
4619                 err = rdev_set_default_key(rdev, dev, link_id, key.idx,
4620                                            key.def_uni, key.def_multi);
4621
4622                 if (err)
4623                         return err;
4624
4625 #ifdef CONFIG_CFG80211_WEXT
4626                 wdev->wext.default_key = key.idx;
4627 #endif
4628                 return 0;
4629         } else if (key.defmgmt) {
4630                 if (key.def_uni || !key.def_multi)
4631                         return -EINVAL;
4632
4633                 if (!rdev->ops->set_default_mgmt_key)
4634                         return -EOPNOTSUPP;
4635
4636                 err = nl80211_key_allowed(wdev);
4637                 if (err)
4638                         return err;
4639
4640                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4641                 if (err)
4642                         return err;
4643
4644                 err = rdev_set_default_mgmt_key(rdev, dev, link_id, key.idx);
4645                 if (err)
4646                         return err;
4647
4648 #ifdef CONFIG_CFG80211_WEXT
4649                 wdev->wext.default_mgmt_key = key.idx;
4650 #endif
4651                 return 0;
4652         } else if (key.defbeacon) {
4653                 if (key.def_uni || !key.def_multi)
4654                         return -EINVAL;
4655
4656                 if (!rdev->ops->set_default_beacon_key)
4657                         return -EOPNOTSUPP;
4658
4659                 err = nl80211_key_allowed(wdev);
4660                 if (err)
4661                         return err;
4662
4663                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4664                 if (err)
4665                         return err;
4666
4667                 return rdev_set_default_beacon_key(rdev, dev, link_id, key.idx);
4668         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4669                    wiphy_ext_feature_isset(&rdev->wiphy,
4670                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4671                 u8 *mac_addr = NULL;
4672
4673                 if (info->attrs[NL80211_ATTR_MAC])
4674                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4675
4676                 if (!mac_addr || key.idx < 0 || key.idx > 1)
4677                         return -EINVAL;
4678
4679                 err = nl80211_validate_key_link_id(info, wdev, link_id, true);
4680                 if (err)
4681                         return err;
4682
4683                 return rdev_add_key(rdev, dev, link_id, key.idx,
4684                                     NL80211_KEYTYPE_PAIRWISE,
4685                                     mac_addr, &key.p);
4686         }
4687
4688         return -EINVAL;
4689 }
4690
4691 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4692 {
4693         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4694         int err;
4695         struct net_device *dev = info->user_ptr[1];
4696         struct key_parse key;
4697         const u8 *mac_addr = NULL;
4698         int link_id = nl80211_link_id_or_invalid(info->attrs);
4699         struct wireless_dev *wdev = dev->ieee80211_ptr;
4700
4701         err = nl80211_parse_key(info, &key);
4702         if (err)
4703                 return err;
4704
4705         if (!key.p.key) {
4706                 GENL_SET_ERR_MSG(info, "no key");
4707                 return -EINVAL;
4708         }
4709
4710         if (info->attrs[NL80211_ATTR_MAC])
4711                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4712
4713         if (key.type == -1) {
4714                 if (mac_addr)
4715                         key.type = NL80211_KEYTYPE_PAIRWISE;
4716                 else
4717                         key.type = NL80211_KEYTYPE_GROUP;
4718         }
4719
4720         /* for now */
4721         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4722             key.type != NL80211_KEYTYPE_GROUP) {
4723                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4724                 return -EINVAL;
4725         }
4726
4727         if (key.type == NL80211_KEYTYPE_GROUP &&
4728             info->attrs[NL80211_ATTR_VLAN_ID])
4729                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4730
4731         if (!rdev->ops->add_key)
4732                 return -EOPNOTSUPP;
4733
4734         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4735                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4736                                            mac_addr)) {
4737                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4738                 return -EINVAL;
4739         }
4740
4741         err = nl80211_key_allowed(wdev);
4742         if (err)
4743                 GENL_SET_ERR_MSG(info, "key not allowed");
4744
4745         if (!err)
4746                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4747                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4748
4749         if (!err) {
4750                 err = rdev_add_key(rdev, dev, link_id, key.idx,
4751                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4752                                     mac_addr, &key.p);
4753                 if (err)
4754                         GENL_SET_ERR_MSG(info, "key addition failed");
4755         }
4756
4757         return err;
4758 }
4759
4760 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4761 {
4762         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4763         int err;
4764         struct net_device *dev = info->user_ptr[1];
4765         u8 *mac_addr = NULL;
4766         struct key_parse key;
4767         int link_id = nl80211_link_id_or_invalid(info->attrs);
4768         struct wireless_dev *wdev = dev->ieee80211_ptr;
4769
4770         err = nl80211_parse_key(info, &key);
4771         if (err)
4772                 return err;
4773
4774         if (info->attrs[NL80211_ATTR_MAC])
4775                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4776
4777         if (key.type == -1) {
4778                 if (mac_addr)
4779                         key.type = NL80211_KEYTYPE_PAIRWISE;
4780                 else
4781                         key.type = NL80211_KEYTYPE_GROUP;
4782         }
4783
4784         /* for now */
4785         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4786             key.type != NL80211_KEYTYPE_GROUP)
4787                 return -EINVAL;
4788
4789         if (!cfg80211_valid_key_idx(rdev, key.idx,
4790                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4791                 return -EINVAL;
4792
4793         if (!rdev->ops->del_key)
4794                 return -EOPNOTSUPP;
4795
4796         err = nl80211_key_allowed(wdev);
4797
4798         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4799             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4800                 err = -ENOENT;
4801
4802         if (!err)
4803                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4804                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4805
4806         if (!err)
4807                 err = rdev_del_key(rdev, dev, link_id, key.idx,
4808                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4809                                    mac_addr);
4810
4811 #ifdef CONFIG_CFG80211_WEXT
4812         if (!err) {
4813                 if (key.idx == wdev->wext.default_key)
4814                         wdev->wext.default_key = -1;
4815                 else if (key.idx == wdev->wext.default_mgmt_key)
4816                         wdev->wext.default_mgmt_key = -1;
4817         }
4818 #endif
4819
4820         return err;
4821 }
4822
4823 /* This function returns an error or the number of nested attributes */
4824 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4825 {
4826         struct nlattr *attr;
4827         int n_entries = 0, tmp;
4828
4829         nla_for_each_nested(attr, nl_attr, tmp) {
4830                 if (nla_len(attr) != ETH_ALEN)
4831                         return -EINVAL;
4832
4833                 n_entries++;
4834         }
4835
4836         return n_entries;
4837 }
4838
4839 /*
4840  * This function parses ACL information and allocates memory for ACL data.
4841  * On successful return, the calling function is responsible to free the
4842  * ACL buffer returned by this function.
4843  */
4844 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4845                                                 struct genl_info *info)
4846 {
4847         enum nl80211_acl_policy acl_policy;
4848         struct nlattr *attr;
4849         struct cfg80211_acl_data *acl;
4850         int i = 0, n_entries, tmp;
4851
4852         if (!wiphy->max_acl_mac_addrs)
4853                 return ERR_PTR(-EOPNOTSUPP);
4854
4855         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4856                 return ERR_PTR(-EINVAL);
4857
4858         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4859         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4860             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4861                 return ERR_PTR(-EINVAL);
4862
4863         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4864                 return ERR_PTR(-EINVAL);
4865
4866         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4867         if (n_entries < 0)
4868                 return ERR_PTR(n_entries);
4869
4870         if (n_entries > wiphy->max_acl_mac_addrs)
4871                 return ERR_PTR(-EOPNOTSUPP);
4872
4873         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4874         if (!acl)
4875                 return ERR_PTR(-ENOMEM);
4876         acl->n_acl_entries = n_entries;
4877
4878         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4879                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4880                 i++;
4881         }
4882         acl->acl_policy = acl_policy;
4883
4884         return acl;
4885 }
4886
4887 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4888 {
4889         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4890         struct net_device *dev = info->user_ptr[1];
4891         struct cfg80211_acl_data *acl;
4892         int err;
4893
4894         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4895             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4896                 return -EOPNOTSUPP;
4897
4898         if (!dev->ieee80211_ptr->links[0].ap.beacon_interval)
4899                 return -EINVAL;
4900
4901         acl = parse_acl_data(&rdev->wiphy, info);
4902         if (IS_ERR(acl))
4903                 return PTR_ERR(acl);
4904
4905         err = rdev_set_mac_acl(rdev, dev, acl);
4906
4907         kfree(acl);
4908
4909         return err;
4910 }
4911
4912 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4913                            u8 *rates, u8 rates_len)
4914 {
4915         u8 i;
4916         u32 mask = 0;
4917
4918         for (i = 0; i < rates_len; i++) {
4919                 int rate = (rates[i] & 0x7f) * 5;
4920                 int ridx;
4921
4922                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4923                         struct ieee80211_rate *srate =
4924                                 &sband->bitrates[ridx];
4925                         if (rate == srate->bitrate) {
4926                                 mask |= 1 << ridx;
4927                                 break;
4928                         }
4929                 }
4930                 if (ridx == sband->n_bitrates)
4931                         return 0; /* rate not found */
4932         }
4933
4934         return mask;
4935 }
4936
4937 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4938                                u8 *rates, u8 rates_len,
4939                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4940 {
4941         u8 i;
4942
4943         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4944
4945         for (i = 0; i < rates_len; i++) {
4946                 int ridx, rbit;
4947
4948                 ridx = rates[i] / 8;
4949                 rbit = BIT(rates[i] % 8);
4950
4951                 /* check validity */
4952                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4953                         return false;
4954
4955                 /* check availability */
4956                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4957                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4958                         mcs[ridx] |= rbit;
4959                 else
4960                         return false;
4961         }
4962
4963         return true;
4964 }
4965
4966 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4967 {
4968         u16 mcs_mask = 0;
4969
4970         switch (vht_mcs_map) {
4971         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4972                 break;
4973         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4974                 mcs_mask = 0x00FF;
4975                 break;
4976         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4977                 mcs_mask = 0x01FF;
4978                 break;
4979         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4980                 mcs_mask = 0x03FF;
4981                 break;
4982         default:
4983                 break;
4984         }
4985
4986         return mcs_mask;
4987 }
4988
4989 static void vht_build_mcs_mask(u16 vht_mcs_map,
4990                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4991 {
4992         u8 nss;
4993
4994         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4995                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4996                 vht_mcs_map >>= 2;
4997         }
4998 }
4999
5000 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
5001                              struct nl80211_txrate_vht *txrate,
5002                              u16 mcs[NL80211_VHT_NSS_MAX])
5003 {
5004         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5005         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
5006         u8 i;
5007
5008         if (!sband->vht_cap.vht_supported)
5009                 return false;
5010
5011         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
5012
5013         /* Build vht_mcs_mask from VHT capabilities */
5014         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5015
5016         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5017                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5018                         mcs[i] = txrate->mcs[i];
5019                 else
5020                         return false;
5021         }
5022
5023         return true;
5024 }
5025
5026 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
5027 {
5028         switch (he_mcs_map) {
5029         case IEEE80211_HE_MCS_NOT_SUPPORTED:
5030                 return 0;
5031         case IEEE80211_HE_MCS_SUPPORT_0_7:
5032                 return 0x00FF;
5033         case IEEE80211_HE_MCS_SUPPORT_0_9:
5034                 return 0x03FF;
5035         case IEEE80211_HE_MCS_SUPPORT_0_11:
5036                 return 0xFFF;
5037         default:
5038                 break;
5039         }
5040         return 0;
5041 }
5042
5043 static void he_build_mcs_mask(u16 he_mcs_map,
5044                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
5045 {
5046         u8 nss;
5047
5048         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
5049                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
5050                 he_mcs_map >>= 2;
5051         }
5052 }
5053
5054 static u16 he_get_txmcsmap(struct genl_info *info, unsigned int link_id,
5055                            const struct ieee80211_sta_he_cap *he_cap)
5056 {
5057         struct net_device *dev = info->user_ptr[1];
5058         struct wireless_dev *wdev = dev->ieee80211_ptr;
5059         struct cfg80211_chan_def *chandef;
5060         __le16 tx_mcs;
5061
5062         chandef = wdev_chandef(wdev, link_id);
5063         if (!chandef) {
5064                 /*
5065                  * This is probably broken, but we never maintained
5066                  * a chandef in these cases, so it always was.
5067                  */
5068                 return le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
5069         }
5070
5071         switch (chandef->width) {
5072         case NL80211_CHAN_WIDTH_80P80:
5073                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
5074                 break;
5075         case NL80211_CHAN_WIDTH_160:
5076                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
5077                 break;
5078         default:
5079                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
5080                 break;
5081         }
5082
5083         return le16_to_cpu(tx_mcs);
5084 }
5085
5086 static bool he_set_mcs_mask(struct genl_info *info,
5087                             struct wireless_dev *wdev,
5088                             struct ieee80211_supported_band *sband,
5089                             struct nl80211_txrate_he *txrate,
5090                             u16 mcs[NL80211_HE_NSS_MAX],
5091                             unsigned int link_id)
5092 {
5093         const struct ieee80211_sta_he_cap *he_cap;
5094         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
5095         u16 tx_mcs_map = 0;
5096         u8 i;
5097
5098         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5099         if (!he_cap)
5100                 return false;
5101
5102         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
5103
5104         tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5105
5106         /* Build he_mcs_mask from HE capabilities */
5107         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5108
5109         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5110                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5111                         mcs[i] = txrate->mcs[i];
5112                 else
5113                         return false;
5114         }
5115
5116         return true;
5117 }
5118
5119 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
5120                                          struct nlattr *attrs[],
5121                                          enum nl80211_attrs attr,
5122                                          struct cfg80211_bitrate_mask *mask,
5123                                          struct net_device *dev,
5124                                          bool default_all_enabled,
5125                                          unsigned int link_id)
5126 {
5127         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5128         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5129         struct wireless_dev *wdev = dev->ieee80211_ptr;
5130         int rem, i;
5131         struct nlattr *tx_rates;
5132         struct ieee80211_supported_band *sband;
5133         u16 vht_tx_mcs_map, he_tx_mcs_map;
5134
5135         memset(mask, 0, sizeof(*mask));
5136         /* Default to all rates enabled */
5137         for (i = 0; i < NUM_NL80211_BANDS; i++) {
5138                 const struct ieee80211_sta_he_cap *he_cap;
5139
5140                 if (!default_all_enabled)
5141                         break;
5142
5143                 sband = rdev->wiphy.bands[i];
5144
5145                 if (!sband)
5146                         continue;
5147
5148                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
5149                 memcpy(mask->control[i].ht_mcs,
5150                        sband->ht_cap.mcs.rx_mask,
5151                        sizeof(mask->control[i].ht_mcs));
5152
5153                 if (sband->vht_cap.vht_supported) {
5154                         vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5155                         vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
5156                 }
5157
5158                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5159                 if (!he_cap)
5160                         continue;
5161
5162                 he_tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5163                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
5164
5165                 mask->control[i].he_gi = 0xFF;
5166                 mask->control[i].he_ltf = 0xFF;
5167         }
5168
5169         /* if no rates are given set it back to the defaults */
5170         if (!attrs[attr])
5171                 goto out;
5172
5173         /* The nested attribute uses enum nl80211_band as the index. This maps
5174          * directly to the enum nl80211_band values used in cfg80211.
5175          */
5176         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5177         nla_for_each_nested(tx_rates, attrs[attr], rem) {
5178                 enum nl80211_band band = nla_type(tx_rates);
5179                 int err;
5180
5181                 if (band < 0 || band >= NUM_NL80211_BANDS)
5182                         return -EINVAL;
5183                 sband = rdev->wiphy.bands[band];
5184                 if (sband == NULL)
5185                         return -EINVAL;
5186                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
5187                                                   tx_rates,
5188                                                   nl80211_txattr_policy,
5189                                                   info->extack);
5190                 if (err)
5191                         return err;
5192                 if (tb[NL80211_TXRATE_LEGACY]) {
5193                         mask->control[band].legacy = rateset_to_mask(
5194                                 sband,
5195                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
5196                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
5197                         if ((mask->control[band].legacy == 0) &&
5198                             nla_len(tb[NL80211_TXRATE_LEGACY]))
5199                                 return -EINVAL;
5200                 }
5201                 if (tb[NL80211_TXRATE_HT]) {
5202                         if (!ht_rateset_to_mask(
5203                                         sband,
5204                                         nla_data(tb[NL80211_TXRATE_HT]),
5205                                         nla_len(tb[NL80211_TXRATE_HT]),
5206                                         mask->control[band].ht_mcs))
5207                                 return -EINVAL;
5208                 }
5209
5210                 if (tb[NL80211_TXRATE_VHT]) {
5211                         if (!vht_set_mcs_mask(
5212                                         sband,
5213                                         nla_data(tb[NL80211_TXRATE_VHT]),
5214                                         mask->control[band].vht_mcs))
5215                                 return -EINVAL;
5216                 }
5217
5218                 if (tb[NL80211_TXRATE_GI]) {
5219                         mask->control[band].gi =
5220                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
5221                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
5222                                 return -EINVAL;
5223                 }
5224                 if (tb[NL80211_TXRATE_HE] &&
5225                     !he_set_mcs_mask(info, wdev, sband,
5226                                      nla_data(tb[NL80211_TXRATE_HE]),
5227                                      mask->control[band].he_mcs,
5228                                      link_id))
5229                         return -EINVAL;
5230
5231                 if (tb[NL80211_TXRATE_HE_GI])
5232                         mask->control[band].he_gi =
5233                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
5234                 if (tb[NL80211_TXRATE_HE_LTF])
5235                         mask->control[band].he_ltf =
5236                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
5237
5238                 if (mask->control[band].legacy == 0) {
5239                         /* don't allow empty legacy rates if HT, VHT or HE
5240                          * are not even supported.
5241                          */
5242                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
5243                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
5244                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
5245                                 return -EINVAL;
5246
5247                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5248                                 if (mask->control[band].ht_mcs[i])
5249                                         goto out;
5250
5251                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
5252                                 if (mask->control[band].vht_mcs[i])
5253                                         goto out;
5254
5255                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
5256                                 if (mask->control[band].he_mcs[i])
5257                                         goto out;
5258
5259                         /* legacy and mcs rates may not be both empty */
5260                         return -EINVAL;
5261                 }
5262         }
5263
5264 out:
5265         return 0;
5266 }
5267
5268 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
5269                                    enum nl80211_band band,
5270                                    struct cfg80211_bitrate_mask *beacon_rate)
5271 {
5272         u32 count_ht, count_vht, count_he, i;
5273         u32 rate = beacon_rate->control[band].legacy;
5274
5275         /* Allow only one rate */
5276         if (hweight32(rate) > 1)
5277                 return -EINVAL;
5278
5279         count_ht = 0;
5280         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
5281                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
5282                         return -EINVAL;
5283                 } else if (beacon_rate->control[band].ht_mcs[i]) {
5284                         count_ht++;
5285                         if (count_ht > 1)
5286                                 return -EINVAL;
5287                 }
5288                 if (count_ht && rate)
5289                         return -EINVAL;
5290         }
5291
5292         count_vht = 0;
5293         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5294                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
5295                         return -EINVAL;
5296                 } else if (beacon_rate->control[band].vht_mcs[i]) {
5297                         count_vht++;
5298                         if (count_vht > 1)
5299                                 return -EINVAL;
5300                 }
5301                 if (count_vht && rate)
5302                         return -EINVAL;
5303         }
5304
5305         count_he = 0;
5306         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5307                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
5308                         return -EINVAL;
5309                 } else if (beacon_rate->control[band].he_mcs[i]) {
5310                         count_he++;
5311                         if (count_he > 1)
5312                                 return -EINVAL;
5313                 }
5314                 if (count_he && rate)
5315                         return -EINVAL;
5316         }
5317
5318         if ((count_ht && count_vht && count_he) ||
5319             (!rate && !count_ht && !count_vht && !count_he))
5320                 return -EINVAL;
5321
5322         if (rate &&
5323             !wiphy_ext_feature_isset(&rdev->wiphy,
5324                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
5325                 return -EINVAL;
5326         if (count_ht &&
5327             !wiphy_ext_feature_isset(&rdev->wiphy,
5328                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
5329                 return -EINVAL;
5330         if (count_vht &&
5331             !wiphy_ext_feature_isset(&rdev->wiphy,
5332                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
5333                 return -EINVAL;
5334         if (count_he &&
5335             !wiphy_ext_feature_isset(&rdev->wiphy,
5336                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
5337                 return -EINVAL;
5338
5339         return 0;
5340 }
5341
5342 static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
5343                                        struct net_device *dev,
5344                                        struct nlattr *attrs,
5345                                        struct cfg80211_mbssid_config *config,
5346                                        u8 num_elems)
5347 {
5348         struct nlattr *tb[NL80211_MBSSID_CONFIG_ATTR_MAX + 1];
5349
5350         if (!wiphy->mbssid_max_interfaces)
5351                 return -EOPNOTSUPP;
5352
5353         if (nla_parse_nested(tb, NL80211_MBSSID_CONFIG_ATTR_MAX, attrs, NULL,
5354                              NULL) ||
5355             !tb[NL80211_MBSSID_CONFIG_ATTR_INDEX])
5356                 return -EINVAL;
5357
5358         config->ema = nla_get_flag(tb[NL80211_MBSSID_CONFIG_ATTR_EMA]);
5359         if (config->ema) {
5360                 if (!wiphy->ema_max_profile_periodicity)
5361                         return -EOPNOTSUPP;
5362
5363                 if (num_elems > wiphy->ema_max_profile_periodicity)
5364                         return -EINVAL;
5365         }
5366
5367         config->index = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_INDEX]);
5368         if (config->index >= wiphy->mbssid_max_interfaces ||
5369             (!config->index && !num_elems))
5370                 return -EINVAL;
5371
5372         if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]) {
5373                 u32 tx_ifindex =
5374                         nla_get_u32(tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]);
5375
5376                 if ((!config->index && tx_ifindex != dev->ifindex) ||
5377                     (config->index && tx_ifindex == dev->ifindex))
5378                         return -EINVAL;
5379
5380                 if (tx_ifindex != dev->ifindex) {
5381                         struct net_device *tx_netdev =
5382                                 dev_get_by_index(wiphy_net(wiphy), tx_ifindex);
5383
5384                         if (!tx_netdev || !tx_netdev->ieee80211_ptr ||
5385                             tx_netdev->ieee80211_ptr->wiphy != wiphy ||
5386                             tx_netdev->ieee80211_ptr->iftype !=
5387                                                         NL80211_IFTYPE_AP) {
5388                                 dev_put(tx_netdev);
5389                                 return -EINVAL;
5390                         }
5391
5392                         config->tx_wdev = tx_netdev->ieee80211_ptr;
5393                 } else {
5394                         config->tx_wdev = dev->ieee80211_ptr;
5395                 }
5396         } else if (!config->index) {
5397                 config->tx_wdev = dev->ieee80211_ptr;
5398         } else {
5399                 return -EINVAL;
5400         }
5401
5402         return 0;
5403 }
5404
5405 static struct cfg80211_mbssid_elems *
5406 nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs)
5407 {
5408         struct nlattr *nl_elems;
5409         struct cfg80211_mbssid_elems *elems;
5410         int rem_elems;
5411         u8 i = 0, num_elems = 0;
5412
5413         if (!wiphy->mbssid_max_interfaces)
5414                 return ERR_PTR(-EINVAL);
5415
5416         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5417                 if (num_elems >= 255)
5418                         return ERR_PTR(-EINVAL);
5419                 num_elems++;
5420         }
5421
5422         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5423         if (!elems)
5424                 return ERR_PTR(-ENOMEM);
5425         elems->cnt = num_elems;
5426
5427         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5428                 elems->elem[i].data = nla_data(nl_elems);
5429                 elems->elem[i].len = nla_len(nl_elems);
5430                 i++;
5431         }
5432         return elems;
5433 }
5434
5435 static struct cfg80211_rnr_elems *
5436 nl80211_parse_rnr_elems(struct wiphy *wiphy, struct nlattr *attrs,
5437                         struct netlink_ext_ack *extack)
5438 {
5439         struct nlattr *nl_elems;
5440         struct cfg80211_rnr_elems *elems;
5441         int rem_elems;
5442         u8 i = 0, num_elems = 0;
5443
5444         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5445                 int ret;
5446
5447                 ret = validate_ie_attr(nl_elems, extack);
5448                 if (ret)
5449                         return ERR_PTR(ret);
5450
5451                 num_elems++;
5452         }
5453
5454         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5455         if (!elems)
5456                 return ERR_PTR(-ENOMEM);
5457         elems->cnt = num_elems;
5458
5459         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5460                 elems->elem[i].data = nla_data(nl_elems);
5461                 elems->elem[i].len = nla_len(nl_elems);
5462                 i++;
5463         }
5464         return elems;
5465 }
5466
5467 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5468                                       struct cfg80211_he_bss_color *he_bss_color)
5469 {
5470         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5471         int err;
5472
5473         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5474                                he_bss_color_policy, NULL);
5475         if (err)
5476                 return err;
5477
5478         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5479                 return -EINVAL;
5480
5481         he_bss_color->color =
5482                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5483         he_bss_color->enabled =
5484                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5485         he_bss_color->partial =
5486                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5487
5488         return 0;
5489 }
5490
5491 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
5492                                 struct nlattr *attrs[],
5493                                 struct cfg80211_beacon_data *bcn,
5494                                 struct netlink_ext_ack *extack)
5495 {
5496         bool haveinfo = false;
5497         int err;
5498
5499         memset(bcn, 0, sizeof(*bcn));
5500
5501         bcn->link_id = nl80211_link_id(attrs);
5502
5503         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
5504                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
5505                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
5506                 if (!bcn->head_len)
5507                         return -EINVAL;
5508                 haveinfo = true;
5509         }
5510
5511         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
5512                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
5513                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
5514                 haveinfo = true;
5515         }
5516
5517         if (!haveinfo)
5518                 return -EINVAL;
5519
5520         if (attrs[NL80211_ATTR_IE]) {
5521                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5522                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5523         }
5524
5525         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5526                 bcn->proberesp_ies =
5527                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5528                 bcn->proberesp_ies_len =
5529                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5530         }
5531
5532         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5533                 bcn->assocresp_ies =
5534                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5535                 bcn->assocresp_ies_len =
5536                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5537         }
5538
5539         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5540                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5541                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5542         }
5543
5544         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5545                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5546
5547                 err = nla_parse_nested_deprecated(tb,
5548                                                   NL80211_FTM_RESP_ATTR_MAX,
5549                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5550                                                   NULL, NULL);
5551                 if (err)
5552                         return err;
5553
5554                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5555                     wiphy_ext_feature_isset(&rdev->wiphy,
5556                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5557                         bcn->ftm_responder = 1;
5558                 else
5559                         return -EOPNOTSUPP;
5560
5561                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5562                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5563                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5564                 }
5565
5566                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5567                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5568                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5569                 }
5570         } else {
5571                 bcn->ftm_responder = -1;
5572         }
5573
5574         if (attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5575                 err = nl80211_parse_he_bss_color(attrs[NL80211_ATTR_HE_BSS_COLOR],
5576                                                  &bcn->he_bss_color);
5577                 if (err)
5578                         return err;
5579                 bcn->he_bss_color_valid = true;
5580         }
5581
5582         if (attrs[NL80211_ATTR_MBSSID_ELEMS]) {
5583                 struct cfg80211_mbssid_elems *mbssid =
5584                         nl80211_parse_mbssid_elems(&rdev->wiphy,
5585                                                    attrs[NL80211_ATTR_MBSSID_ELEMS]);
5586
5587                 if (IS_ERR(mbssid))
5588                         return PTR_ERR(mbssid);
5589
5590                 bcn->mbssid_ies = mbssid;
5591
5592                 if (bcn->mbssid_ies && attrs[NL80211_ATTR_EMA_RNR_ELEMS]) {
5593                         struct cfg80211_rnr_elems *rnr =
5594                                 nl80211_parse_rnr_elems(&rdev->wiphy,
5595                                                         attrs[NL80211_ATTR_EMA_RNR_ELEMS],
5596                                                         extack);
5597
5598                         if (IS_ERR(rnr))
5599                                 return PTR_ERR(rnr);
5600
5601                         if (rnr && rnr->cnt < bcn->mbssid_ies->cnt)
5602                                 return -EINVAL;
5603
5604                         bcn->rnr_ies = rnr;
5605                 }
5606         }
5607
5608         return 0;
5609 }
5610
5611 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5612                                     struct ieee80211_he_obss_pd *he_obss_pd)
5613 {
5614         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5615         int err;
5616
5617         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5618                                he_obss_pd_policy, NULL);
5619         if (err)
5620                 return err;
5621
5622         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5623                 return -EINVAL;
5624
5625         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5626
5627         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5628                 he_obss_pd->min_offset =
5629                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5630         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5631                 he_obss_pd->max_offset =
5632                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5633         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5634                 he_obss_pd->non_srg_max_offset =
5635                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5636
5637         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5638                 return -EINVAL;
5639
5640         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5641                 memcpy(he_obss_pd->bss_color_bitmap,
5642                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5643                        sizeof(he_obss_pd->bss_color_bitmap));
5644
5645         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5646                 memcpy(he_obss_pd->partial_bssid_bitmap,
5647                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5648                        sizeof(he_obss_pd->partial_bssid_bitmap));
5649
5650         he_obss_pd->enable = true;
5651
5652         return 0;
5653 }
5654
5655 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5656                                         struct nlattr *attrs,
5657                                         struct cfg80211_fils_discovery *fd)
5658 {
5659         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5660         int ret;
5661
5662         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5663                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5664                 return -EINVAL;
5665
5666         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5667                                NULL, NULL);
5668         if (ret)
5669                 return ret;
5670
5671         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] &&
5672             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] &&
5673             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]) {
5674                 fd->update = true;
5675                 return 0;
5676         }
5677
5678         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5679             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5680             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5681                 return -EINVAL;
5682
5683         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5684         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5685         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5686         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5687         fd->update = true;
5688         return 0;
5689 }
5690
5691 static int
5692 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5693                                      struct nlattr *attrs,
5694                                      struct cfg80211_unsol_bcast_probe_resp *presp)
5695 {
5696         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5697         int ret;
5698
5699         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5700                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5701                 return -EINVAL;
5702
5703         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5704                                attrs, NULL, NULL);
5705         if (ret)
5706                 return ret;
5707
5708         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] &&
5709             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]) {
5710                 presp->update = true;
5711                 return 0;
5712         }
5713
5714         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5715             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5716                 return -EINVAL;
5717
5718         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5719         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5720         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5721         presp->update = true;
5722         return 0;
5723 }
5724
5725 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5726                                             const struct element *rates)
5727 {
5728         int i;
5729
5730         if (!rates)
5731                 return;
5732
5733         for (i = 0; i < rates->datalen; i++) {
5734                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5735                         params->ht_required = true;
5736                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5737                         params->vht_required = true;
5738                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5739                         params->he_required = true;
5740                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5741                         params->sae_h2e_required = true;
5742         }
5743 }
5744
5745 /*
5746  * Since the nl80211 API didn't include, from the beginning, attributes about
5747  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5748  * benefit of drivers that rebuild IEs in the firmware.
5749  */
5750 static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5751 {
5752         const struct cfg80211_beacon_data *bcn = &params->beacon;
5753         size_t ies_len = bcn->tail_len;
5754         const u8 *ies = bcn->tail;
5755         const struct element *rates;
5756         const struct element *cap;
5757
5758         rates = cfg80211_find_elem(WLAN_EID_SUPP_RATES, ies, ies_len);
5759         nl80211_check_ap_rate_selectors(params, rates);
5760
5761         rates = cfg80211_find_elem(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5762         nl80211_check_ap_rate_selectors(params, rates);
5763
5764         cap = cfg80211_find_elem(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5765         if (cap && cap->datalen >= sizeof(*params->ht_cap))
5766                 params->ht_cap = (void *)cap->data;
5767         cap = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5768         if (cap && cap->datalen >= sizeof(*params->vht_cap))
5769                 params->vht_cap = (void *)cap->data;
5770         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5771         if (cap && cap->datalen >= sizeof(*params->he_cap) + 1)
5772                 params->he_cap = (void *)(cap->data + 1);
5773         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5774         if (cap && cap->datalen >= sizeof(*params->he_oper) + 1)
5775                 params->he_oper = (void *)(cap->data + 1);
5776         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len);
5777         if (cap) {
5778                 if (!cap->datalen)
5779                         return -EINVAL;
5780                 params->eht_cap = (void *)(cap->data + 1);
5781                 if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap,
5782                                                 (const u8 *)params->eht_cap,
5783                                                 cap->datalen - 1, true))
5784                         return -EINVAL;
5785         }
5786         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len);
5787         if (cap) {
5788                 if (!cap->datalen)
5789                         return -EINVAL;
5790                 params->eht_oper = (void *)(cap->data + 1);
5791                 if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper,
5792                                                 cap->datalen - 1))
5793                         return -EINVAL;
5794         }
5795         return 0;
5796 }
5797
5798 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5799                                    struct cfg80211_ap_settings *params)
5800 {
5801         struct wireless_dev *wdev;
5802
5803         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5804                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5805                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5806                         continue;
5807
5808                 if (!wdev->u.ap.preset_chandef.chan)
5809                         continue;
5810
5811                 params->chandef = wdev->u.ap.preset_chandef;
5812                 return true;
5813         }
5814
5815         return false;
5816 }
5817
5818 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5819                                     enum nl80211_auth_type auth_type,
5820                                     enum nl80211_commands cmd)
5821 {
5822         if (auth_type > NL80211_AUTHTYPE_MAX)
5823                 return false;
5824
5825         switch (cmd) {
5826         case NL80211_CMD_AUTHENTICATE:
5827                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5828                     auth_type == NL80211_AUTHTYPE_SAE)
5829                         return false;
5830                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5831                                              NL80211_EXT_FEATURE_FILS_STA) &&
5832                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5833                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5834                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5835                         return false;
5836                 return true;
5837         case NL80211_CMD_CONNECT:
5838                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5839                     !wiphy_ext_feature_isset(&rdev->wiphy,
5840                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5841                     auth_type == NL80211_AUTHTYPE_SAE)
5842                         return false;
5843
5844                 /* FILS with SK PFS or PK not supported yet */
5845                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5846                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5847                         return false;
5848                 if (!wiphy_ext_feature_isset(
5849                             &rdev->wiphy,
5850                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5851                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5852                         return false;
5853                 return true;
5854         case NL80211_CMD_START_AP:
5855                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5856                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5857                     auth_type == NL80211_AUTHTYPE_SAE)
5858                         return false;
5859                 /* FILS not supported yet */
5860                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5861                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5862                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5863                         return false;
5864                 return true;
5865         default:
5866                 return false;
5867         }
5868 }
5869
5870 static void nl80211_send_ap_started(struct wireless_dev *wdev,
5871                                     unsigned int link_id)
5872 {
5873         struct wiphy *wiphy = wdev->wiphy;
5874         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
5875         struct sk_buff *msg;
5876         void *hdr;
5877
5878         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5879         if (!msg)
5880                 return;
5881
5882         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_START_AP);
5883         if (!hdr)
5884                 goto out;
5885
5886         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
5887             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
5888             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
5889                               NL80211_ATTR_PAD) ||
5890             (wdev->u.ap.ssid_len &&
5891              nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
5892                      wdev->u.ap.ssid)) ||
5893             (wdev->valid_links &&
5894              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
5895                 goto out;
5896
5897         genlmsg_end(msg, hdr);
5898
5899         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
5900                                 NL80211_MCGRP_MLME, GFP_KERNEL);
5901         return;
5902 out:
5903         nlmsg_free(msg);
5904 }
5905
5906 static int nl80211_validate_ap_phy_operation(struct cfg80211_ap_settings *params)
5907 {
5908         struct ieee80211_channel *channel = params->chandef.chan;
5909
5910         if ((params->he_cap ||  params->he_oper) &&
5911             (channel->flags & IEEE80211_CHAN_NO_HE))
5912                 return -EOPNOTSUPP;
5913
5914         if ((params->eht_cap || params->eht_oper) &&
5915             (channel->flags & IEEE80211_CHAN_NO_EHT))
5916                 return -EOPNOTSUPP;
5917
5918         return 0;
5919 }
5920
5921 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5922 {
5923         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5924         unsigned int link_id = nl80211_link_id(info->attrs);
5925         struct net_device *dev = info->user_ptr[1];
5926         struct wireless_dev *wdev = dev->ieee80211_ptr;
5927         struct cfg80211_ap_settings *params;
5928         int err;
5929
5930         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5931             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5932                 return -EOPNOTSUPP;
5933
5934         if (!rdev->ops->start_ap)
5935                 return -EOPNOTSUPP;
5936
5937         if (wdev->links[link_id].ap.beacon_interval)
5938                 return -EALREADY;
5939
5940         /* these are required for START_AP */
5941         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5942             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5943             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5944                 return -EINVAL;
5945
5946         params = kzalloc(sizeof(*params), GFP_KERNEL);
5947         if (!params)
5948                 return -ENOMEM;
5949
5950         err = nl80211_parse_beacon(rdev, info->attrs, &params->beacon,
5951                                    info->extack);
5952         if (err)
5953                 goto out;
5954
5955         params->beacon_interval =
5956                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5957         params->dtim_period =
5958                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5959
5960         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5961                                            params->beacon_interval);
5962         if (err)
5963                 goto out;
5964
5965         /*
5966          * In theory, some of these attributes should be required here
5967          * but since they were not used when the command was originally
5968          * added, keep them optional for old user space programs to let
5969          * them continue to work with drivers that do not need the
5970          * additional information -- drivers must check!
5971          */
5972         if (info->attrs[NL80211_ATTR_SSID]) {
5973                 params->ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5974                 params->ssid_len =
5975                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5976                 if (params->ssid_len == 0) {
5977                         err = -EINVAL;
5978                         goto out;
5979                 }
5980
5981                 if (wdev->u.ap.ssid_len &&
5982                     (wdev->u.ap.ssid_len != params->ssid_len ||
5983                      memcmp(wdev->u.ap.ssid, params->ssid, params->ssid_len))) {
5984                         /* require identical SSID for MLO */
5985                         err = -EINVAL;
5986                         goto out;
5987                 }
5988         } else if (wdev->valid_links) {
5989                 /* require SSID for MLO */
5990                 err = -EINVAL;
5991                 goto out;
5992         }
5993
5994         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5995                 params->hidden_ssid = nla_get_u32(
5996                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5997
5998         params->privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5999
6000         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6001                 params->auth_type = nla_get_u32(
6002                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
6003                 if (!nl80211_valid_auth_type(rdev, params->auth_type,
6004                                              NL80211_CMD_START_AP)) {
6005                         err = -EINVAL;
6006                         goto out;
6007                 }
6008         } else
6009                 params->auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6010
6011         err = nl80211_crypto_settings(rdev, info, &params->crypto,
6012                                       NL80211_MAX_NR_CIPHER_SUITES);
6013         if (err)
6014                 goto out;
6015
6016         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
6017                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) {
6018                         err = -EOPNOTSUPP;
6019                         goto out;
6020                 }
6021                 params->inactivity_timeout = nla_get_u16(
6022                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
6023         }
6024
6025         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6026                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6027                         err = -EINVAL;
6028                         goto out;
6029                 }
6030                 params->p2p_ctwindow =
6031                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6032                 if (params->p2p_ctwindow != 0 &&
6033                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) {
6034                         err = -EINVAL;
6035                         goto out;
6036                 }
6037         }
6038
6039         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6040                 u8 tmp;
6041
6042                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6043                         err = -EINVAL;
6044                         goto out;
6045                 }
6046                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6047                 params->p2p_opp_ps = tmp;
6048                 if (params->p2p_opp_ps != 0 &&
6049                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) {
6050                         err = -EINVAL;
6051                         goto out;
6052                 }
6053         }
6054
6055         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6056                 err = nl80211_parse_chandef(rdev, info, &params->chandef);
6057                 if (err)
6058                         goto out;
6059         } else if (wdev->valid_links) {
6060                 /* with MLD need to specify the channel configuration */
6061                 err = -EINVAL;
6062                 goto out;
6063         } else if (wdev->u.ap.preset_chandef.chan) {
6064                 params->chandef = wdev->u.ap.preset_chandef;
6065         } else if (!nl80211_get_ap_channel(rdev, params)) {
6066                 err = -EINVAL;
6067                 goto out;
6068         }
6069
6070         if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
6071                 err = nl80211_parse_punct_bitmap(rdev, info,
6072                                                  &params->chandef,
6073                                                  &params->punct_bitmap);
6074                 if (err)
6075                         goto out;
6076         }
6077
6078         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params->chandef,
6079                                            wdev->iftype)) {
6080                 err = -EINVAL;
6081                 goto out;
6082         }
6083
6084         if (info->attrs[NL80211_ATTR_TX_RATES]) {
6085                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
6086                                                     NL80211_ATTR_TX_RATES,
6087                                                     &params->beacon_rate,
6088                                                     dev, false, link_id);
6089                 if (err)
6090                         goto out;
6091
6092                 err = validate_beacon_tx_rate(rdev, params->chandef.chan->band,
6093                                               &params->beacon_rate);
6094                 if (err)
6095                         goto out;
6096         }
6097
6098         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
6099                 params->smps_mode =
6100                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
6101                 switch (params->smps_mode) {
6102                 case NL80211_SMPS_OFF:
6103                         break;
6104                 case NL80211_SMPS_STATIC:
6105                         if (!(rdev->wiphy.features &
6106                               NL80211_FEATURE_STATIC_SMPS)) {
6107                                 err = -EINVAL;
6108                                 goto out;
6109                         }
6110                         break;
6111                 case NL80211_SMPS_DYNAMIC:
6112                         if (!(rdev->wiphy.features &
6113                               NL80211_FEATURE_DYNAMIC_SMPS)) {
6114                                 err = -EINVAL;
6115                                 goto out;
6116                         }
6117                         break;
6118                 default:
6119                         err = -EINVAL;
6120                         goto out;
6121                 }
6122         } else {
6123                 params->smps_mode = NL80211_SMPS_OFF;
6124         }
6125
6126         params->pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
6127         if (params->pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
6128                 err = -EOPNOTSUPP;
6129                 goto out;
6130         }
6131
6132         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
6133                 params->acl = parse_acl_data(&rdev->wiphy, info);
6134                 if (IS_ERR(params->acl)) {
6135                         err = PTR_ERR(params->acl);
6136                         params->acl = NULL;
6137                         goto out;
6138                 }
6139         }
6140
6141         params->twt_responder =
6142                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
6143
6144         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
6145                 err = nl80211_parse_he_obss_pd(
6146                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
6147                                         &params->he_obss_pd);
6148                 if (err)
6149                         goto out;
6150         }
6151
6152         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
6153                 err = nl80211_parse_fils_discovery(rdev,
6154                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
6155                                                    &params->fils_discovery);
6156                 if (err)
6157                         goto out;
6158         }
6159
6160         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
6161                 err = nl80211_parse_unsol_bcast_probe_resp(
6162                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
6163                         &params->unsol_bcast_probe_resp);
6164                 if (err)
6165                         goto out;
6166         }
6167
6168         if (info->attrs[NL80211_ATTR_MBSSID_CONFIG]) {
6169                 err = nl80211_parse_mbssid_config(&rdev->wiphy, dev,
6170                                                   info->attrs[NL80211_ATTR_MBSSID_CONFIG],
6171                                                   &params->mbssid_config,
6172                                                   params->beacon.mbssid_ies ?
6173                                                         params->beacon.mbssid_ies->cnt :
6174                                                         0);
6175                 if (err)
6176                         goto out;
6177         }
6178
6179         if (!params->mbssid_config.ema && params->beacon.rnr_ies) {
6180                 err = -EINVAL;
6181                 goto out;
6182         }
6183
6184         err = nl80211_calculate_ap_params(params);
6185         if (err)
6186                 goto out;
6187
6188         err = nl80211_validate_ap_phy_operation(params);
6189         if (err)
6190                 goto out;
6191
6192         if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS])
6193                 params->flags = nla_get_u32(
6194                         info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]);
6195         else if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
6196                 params->flags |= NL80211_AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
6197
6198         if (wdev->conn_owner_nlportid &&
6199             info->attrs[NL80211_ATTR_SOCKET_OWNER] &&
6200             wdev->conn_owner_nlportid != info->snd_portid) {
6201                 err = -EINVAL;
6202                 goto out;
6203         }
6204
6205         /* FIXME: validate MLO/link-id against driver capabilities */
6206
6207         err = rdev_start_ap(rdev, dev, params);
6208         if (!err) {
6209                 wdev->links[link_id].ap.beacon_interval = params->beacon_interval;
6210                 wdev->links[link_id].ap.chandef = params->chandef;
6211                 wdev->u.ap.ssid_len = params->ssid_len;
6212                 memcpy(wdev->u.ap.ssid, params->ssid,
6213                        params->ssid_len);
6214
6215                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6216                         wdev->conn_owner_nlportid = info->snd_portid;
6217
6218                 nl80211_send_ap_started(wdev, link_id);
6219         }
6220 out:
6221         kfree(params->acl);
6222         kfree(params->beacon.mbssid_ies);
6223         if (params->mbssid_config.tx_wdev &&
6224             params->mbssid_config.tx_wdev->netdev &&
6225             params->mbssid_config.tx_wdev->netdev != dev)
6226                 dev_put(params->mbssid_config.tx_wdev->netdev);
6227         kfree(params->beacon.rnr_ies);
6228         kfree(params);
6229
6230         return err;
6231 }
6232
6233 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
6234 {
6235         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6236         unsigned int link_id = nl80211_link_id(info->attrs);
6237         struct net_device *dev = info->user_ptr[1];
6238         struct wireless_dev *wdev = dev->ieee80211_ptr;
6239         struct cfg80211_ap_update *params;
6240         struct nlattr *attr;
6241         int err;
6242
6243         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6244             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6245                 return -EOPNOTSUPP;
6246
6247         if (!rdev->ops->change_beacon)
6248                 return -EOPNOTSUPP;
6249
6250         if (!wdev->links[link_id].ap.beacon_interval)
6251                 return -EINVAL;
6252
6253         params = kzalloc(sizeof(*params), GFP_KERNEL);
6254         if (!params)
6255                 return -ENOMEM;
6256
6257         err = nl80211_parse_beacon(rdev, info->attrs, &params->beacon,
6258                                    info->extack);
6259         if (err)
6260                 goto out;
6261
6262         attr = info->attrs[NL80211_ATTR_FILS_DISCOVERY];
6263         if (attr) {
6264                 err = nl80211_parse_fils_discovery(rdev, attr,
6265                                                    &params->fils_discovery);
6266                 if (err)
6267                         goto out;
6268         }
6269
6270         attr = info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP];
6271         if (attr) {
6272                 err = nl80211_parse_unsol_bcast_probe_resp(rdev, attr,
6273                                                            &params->unsol_bcast_probe_resp);
6274                 if (err)
6275                         goto out;
6276         }
6277
6278         err = rdev_change_beacon(rdev, dev, params);
6279
6280 out:
6281         kfree(params->beacon.mbssid_ies);
6282         kfree(params->beacon.rnr_ies);
6283         kfree(params);
6284         return err;
6285 }
6286
6287 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
6288 {
6289         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6290         unsigned int link_id = nl80211_link_id(info->attrs);
6291         struct net_device *dev = info->user_ptr[1];
6292
6293         return cfg80211_stop_ap(rdev, dev, link_id, false);
6294 }
6295
6296 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
6297         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
6298         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
6299         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
6300         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
6301         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
6302         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
6303 };
6304
6305 static int parse_station_flags(struct genl_info *info,
6306                                enum nl80211_iftype iftype,
6307                                struct station_parameters *params)
6308 {
6309         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
6310         struct nlattr *nla;
6311         int flag;
6312
6313         /*
6314          * Try parsing the new attribute first so userspace
6315          * can specify both for older kernels.
6316          */
6317         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
6318         if (nla) {
6319                 struct nl80211_sta_flag_update *sta_flags;
6320
6321                 sta_flags = nla_data(nla);
6322                 params->sta_flags_mask = sta_flags->mask;
6323                 params->sta_flags_set = sta_flags->set;
6324                 params->sta_flags_set &= params->sta_flags_mask;
6325                 if ((params->sta_flags_mask |
6326                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
6327                         return -EINVAL;
6328                 return 0;
6329         }
6330
6331         /* if present, parse the old attribute */
6332
6333         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
6334         if (!nla)
6335                 return 0;
6336
6337         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
6338                 return -EINVAL;
6339
6340         /*
6341          * Only allow certain flags for interface types so that
6342          * other attributes are silently ignored. Remember that
6343          * this is backward compatibility code with old userspace
6344          * and shouldn't be hit in other cases anyway.
6345          */
6346         switch (iftype) {
6347         case NL80211_IFTYPE_AP:
6348         case NL80211_IFTYPE_AP_VLAN:
6349         case NL80211_IFTYPE_P2P_GO:
6350                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6351                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6352                                          BIT(NL80211_STA_FLAG_WME) |
6353                                          BIT(NL80211_STA_FLAG_MFP);
6354                 break;
6355         case NL80211_IFTYPE_P2P_CLIENT:
6356         case NL80211_IFTYPE_STATION:
6357                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6358                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
6359                 break;
6360         case NL80211_IFTYPE_MESH_POINT:
6361                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6362                                          BIT(NL80211_STA_FLAG_MFP) |
6363                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
6364                 break;
6365         default:
6366                 return -EINVAL;
6367         }
6368
6369         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
6370                 if (flags[flag]) {
6371                         params->sta_flags_set |= (1<<flag);
6372
6373                         /* no longer support new API additions in old API */
6374                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
6375                                 return -EINVAL;
6376                 }
6377         }
6378
6379         return 0;
6380 }
6381
6382 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
6383 {
6384         struct nlattr *rate;
6385         u32 bitrate;
6386         u16 bitrate_compat;
6387         enum nl80211_rate_info rate_flg;
6388
6389         rate = nla_nest_start_noflag(msg, attr);
6390         if (!rate)
6391                 return false;
6392
6393         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
6394         bitrate = cfg80211_calculate_bitrate(info);
6395         /* report 16-bit bitrate only if we can */
6396         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
6397         if (bitrate > 0 &&
6398             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
6399                 return false;
6400         if (bitrate_compat > 0 &&
6401             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
6402                 return false;
6403
6404         switch (info->bw) {
6405         case RATE_INFO_BW_1:
6406                 rate_flg = NL80211_RATE_INFO_1_MHZ_WIDTH;
6407                 break;
6408         case RATE_INFO_BW_2:
6409                 rate_flg = NL80211_RATE_INFO_2_MHZ_WIDTH;
6410                 break;
6411         case RATE_INFO_BW_4:
6412                 rate_flg = NL80211_RATE_INFO_4_MHZ_WIDTH;
6413                 break;
6414         case RATE_INFO_BW_5:
6415                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
6416                 break;
6417         case RATE_INFO_BW_8:
6418                 rate_flg = NL80211_RATE_INFO_8_MHZ_WIDTH;
6419                 break;
6420         case RATE_INFO_BW_10:
6421                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
6422                 break;
6423         case RATE_INFO_BW_16:
6424                 rate_flg = NL80211_RATE_INFO_16_MHZ_WIDTH;
6425                 break;
6426         default:
6427                 WARN_ON(1);
6428                 fallthrough;
6429         case RATE_INFO_BW_20:
6430                 rate_flg = 0;
6431                 break;
6432         case RATE_INFO_BW_40:
6433                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
6434                 break;
6435         case RATE_INFO_BW_80:
6436                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
6437                 break;
6438         case RATE_INFO_BW_160:
6439                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
6440                 break;
6441         case RATE_INFO_BW_HE_RU:
6442                 rate_flg = 0;
6443                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
6444                 break;
6445         case RATE_INFO_BW_320:
6446                 rate_flg = NL80211_RATE_INFO_320_MHZ_WIDTH;
6447                 break;
6448         case RATE_INFO_BW_EHT_RU:
6449                 rate_flg = 0;
6450                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_EHT_MCS));
6451                 break;
6452         }
6453
6454         if (rate_flg && nla_put_flag(msg, rate_flg))
6455                 return false;
6456
6457         if (info->flags & RATE_INFO_FLAGS_MCS) {
6458                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
6459                         return false;
6460                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6461                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6462                         return false;
6463         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
6464                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
6465                         return false;
6466                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
6467                         return false;
6468                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6469                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6470                         return false;
6471         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
6472                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
6473                         return false;
6474                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
6475                         return false;
6476                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
6477                         return false;
6478                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
6479                         return false;
6480                 if (info->bw == RATE_INFO_BW_HE_RU &&
6481                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
6482                                info->he_ru_alloc))
6483                         return false;
6484         } else if (info->flags & RATE_INFO_FLAGS_S1G_MCS) {
6485                 if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_MCS, info->mcs))
6486                         return false;
6487                 if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_NSS, info->nss))
6488                         return false;
6489                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6490                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6491                         return false;
6492         } else if (info->flags & RATE_INFO_FLAGS_EHT_MCS) {
6493                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_MCS, info->mcs))
6494                         return false;
6495                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_NSS, info->nss))
6496                         return false;
6497                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_GI, info->eht_gi))
6498                         return false;
6499                 if (info->bw == RATE_INFO_BW_EHT_RU &&
6500                     nla_put_u8(msg, NL80211_RATE_INFO_EHT_RU_ALLOC,
6501                                info->eht_ru_alloc))
6502                         return false;
6503         }
6504
6505         nla_nest_end(msg, rate);
6506         return true;
6507 }
6508
6509 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
6510                                int id)
6511 {
6512         void *attr;
6513         int i = 0;
6514
6515         if (!mask)
6516                 return true;
6517
6518         attr = nla_nest_start_noflag(msg, id);
6519         if (!attr)
6520                 return false;
6521
6522         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
6523                 if (!(mask & BIT(i)))
6524                         continue;
6525
6526                 if (nla_put_u8(msg, i, signal[i]))
6527                         return false;
6528         }
6529
6530         nla_nest_end(msg, attr);
6531
6532         return true;
6533 }
6534
6535 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
6536                                 u32 seq, int flags,
6537                                 struct cfg80211_registered_device *rdev,
6538                                 struct net_device *dev,
6539                                 const u8 *mac_addr, struct station_info *sinfo)
6540 {
6541         void *hdr;
6542         struct nlattr *sinfoattr, *bss_param;
6543
6544         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
6545         if (!hdr) {
6546                 cfg80211_sinfo_release_content(sinfo);
6547                 return -1;
6548         }
6549
6550         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6551             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
6552             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
6553                 goto nla_put_failure;
6554
6555         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
6556         if (!sinfoattr)
6557                 goto nla_put_failure;
6558
6559 #define PUT_SINFO(attr, memb, type) do {                                \
6560         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
6561         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6562             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
6563                              sinfo->memb))                              \
6564                 goto nla_put_failure;                                   \
6565         } while (0)
6566 #define PUT_SINFO_U64(attr, memb) do {                                  \
6567         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6568             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
6569                               sinfo->memb, NL80211_STA_INFO_PAD))       \
6570                 goto nla_put_failure;                                   \
6571         } while (0)
6572
6573         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
6574         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
6575         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
6576
6577         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
6578                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
6579             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
6580                         (u32)sinfo->rx_bytes))
6581                 goto nla_put_failure;
6582
6583         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
6584                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
6585             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
6586                         (u32)sinfo->tx_bytes))
6587                 goto nla_put_failure;
6588
6589         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
6590         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
6591         PUT_SINFO(LLID, llid, u16);
6592         PUT_SINFO(PLID, plid, u16);
6593         PUT_SINFO(PLINK_STATE, plink_state, u8);
6594         PUT_SINFO_U64(RX_DURATION, rx_duration);
6595         PUT_SINFO_U64(TX_DURATION, tx_duration);
6596
6597         if (wiphy_ext_feature_isset(&rdev->wiphy,
6598                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6599                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
6600
6601         switch (rdev->wiphy.signal_type) {
6602         case CFG80211_SIGNAL_TYPE_MBM:
6603                 PUT_SINFO(SIGNAL, signal, u8);
6604                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
6605                 break;
6606         default:
6607                 break;
6608         }
6609         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
6610                 if (!nl80211_put_signal(msg, sinfo->chains,
6611                                         sinfo->chain_signal,
6612                                         NL80211_STA_INFO_CHAIN_SIGNAL))
6613                         goto nla_put_failure;
6614         }
6615         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
6616                 if (!nl80211_put_signal(msg, sinfo->chains,
6617                                         sinfo->chain_signal_avg,
6618                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
6619                         goto nla_put_failure;
6620         }
6621         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
6622                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
6623                                           NL80211_STA_INFO_TX_BITRATE))
6624                         goto nla_put_failure;
6625         }
6626         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
6627                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
6628                                           NL80211_STA_INFO_RX_BITRATE))
6629                         goto nla_put_failure;
6630         }
6631
6632         PUT_SINFO(RX_PACKETS, rx_packets, u32);
6633         PUT_SINFO(TX_PACKETS, tx_packets, u32);
6634         PUT_SINFO(TX_RETRIES, tx_retries, u32);
6635         PUT_SINFO(TX_FAILED, tx_failed, u32);
6636         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
6637         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
6638         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
6639         PUT_SINFO(LOCAL_PM, local_pm, u32);
6640         PUT_SINFO(PEER_PM, peer_pm, u32);
6641         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
6642         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
6643         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
6644
6645         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
6646                 bss_param = nla_nest_start_noflag(msg,
6647                                                   NL80211_STA_INFO_BSS_PARAM);
6648                 if (!bss_param)
6649                         goto nla_put_failure;
6650
6651                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
6652                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
6653                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
6654                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
6655                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
6656                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
6657                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
6658                                sinfo->bss_param.dtim_period) ||
6659                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
6660                                 sinfo->bss_param.beacon_interval))
6661                         goto nla_put_failure;
6662
6663                 nla_nest_end(msg, bss_param);
6664         }
6665         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
6666             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
6667                     sizeof(struct nl80211_sta_flag_update),
6668                     &sinfo->sta_flags))
6669                 goto nla_put_failure;
6670
6671         PUT_SINFO_U64(T_OFFSET, t_offset);
6672         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
6673         PUT_SINFO_U64(BEACON_RX, rx_beacon);
6674         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
6675         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
6676         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
6677         if (wiphy_ext_feature_isset(&rdev->wiphy,
6678                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
6679                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
6680                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
6681         }
6682
6683 #undef PUT_SINFO
6684 #undef PUT_SINFO_U64
6685
6686         if (sinfo->pertid) {
6687                 struct nlattr *tidsattr;
6688                 int tid;
6689
6690                 tidsattr = nla_nest_start_noflag(msg,
6691                                                  NL80211_STA_INFO_TID_STATS);
6692                 if (!tidsattr)
6693                         goto nla_put_failure;
6694
6695                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
6696                         struct cfg80211_tid_stats *tidstats;
6697                         struct nlattr *tidattr;
6698
6699                         tidstats = &sinfo->pertid[tid];
6700
6701                         if (!tidstats->filled)
6702                                 continue;
6703
6704                         tidattr = nla_nest_start_noflag(msg, tid + 1);
6705                         if (!tidattr)
6706                                 goto nla_put_failure;
6707
6708 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
6709         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
6710             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
6711                               tidstats->memb, NL80211_TID_STATS_PAD))   \
6712                 goto nla_put_failure;                                   \
6713         } while (0)
6714
6715                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
6716                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
6717                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
6718                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
6719
6720 #undef PUT_TIDVAL_U64
6721                         if ((tidstats->filled &
6722                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
6723                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
6724                                                    NL80211_TID_STATS_TXQ_STATS))
6725                                 goto nla_put_failure;
6726
6727                         nla_nest_end(msg, tidattr);
6728                 }
6729
6730                 nla_nest_end(msg, tidsattr);
6731         }
6732
6733         nla_nest_end(msg, sinfoattr);
6734
6735         if (sinfo->assoc_req_ies_len &&
6736             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
6737                     sinfo->assoc_req_ies))
6738                 goto nla_put_failure;
6739
6740         if (sinfo->assoc_resp_ies_len &&
6741             nla_put(msg, NL80211_ATTR_RESP_IE, sinfo->assoc_resp_ies_len,
6742                     sinfo->assoc_resp_ies))
6743                 goto nla_put_failure;
6744
6745         if (sinfo->mlo_params_valid) {
6746                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
6747                                sinfo->assoc_link_id))
6748                         goto nla_put_failure;
6749
6750                 if (!is_zero_ether_addr(sinfo->mld_addr) &&
6751                     nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
6752                             sinfo->mld_addr))
6753                         goto nla_put_failure;
6754         }
6755
6756         cfg80211_sinfo_release_content(sinfo);
6757         genlmsg_end(msg, hdr);
6758         return 0;
6759
6760  nla_put_failure:
6761         cfg80211_sinfo_release_content(sinfo);
6762         genlmsg_cancel(msg, hdr);
6763         return -EMSGSIZE;
6764 }
6765
6766 static int nl80211_dump_station(struct sk_buff *skb,
6767                                 struct netlink_callback *cb)
6768 {
6769         struct station_info sinfo;
6770         struct cfg80211_registered_device *rdev;
6771         struct wireless_dev *wdev;
6772         u8 mac_addr[ETH_ALEN];
6773         int sta_idx = cb->args[2];
6774         int err;
6775
6776         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
6777         if (err)
6778                 return err;
6779         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6780         __acquire(&rdev->wiphy.mtx);
6781
6782         if (!wdev->netdev) {
6783                 err = -EINVAL;
6784                 goto out_err;
6785         }
6786
6787         if (!rdev->ops->dump_station) {
6788                 err = -EOPNOTSUPP;
6789                 goto out_err;
6790         }
6791
6792         while (1) {
6793                 memset(&sinfo, 0, sizeof(sinfo));
6794                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6795                                         mac_addr, &sinfo);
6796                 if (err == -ENOENT)
6797                         break;
6798                 if (err)
6799                         goto out_err;
6800
6801                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6802                                 NETLINK_CB(cb->skb).portid,
6803                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6804                                 rdev, wdev->netdev, mac_addr,
6805                                 &sinfo) < 0)
6806                         goto out;
6807
6808                 sta_idx++;
6809         }
6810
6811  out:
6812         cb->args[2] = sta_idx;
6813         err = skb->len;
6814  out_err:
6815         wiphy_unlock(&rdev->wiphy);
6816
6817         return err;
6818 }
6819
6820 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6821 {
6822         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6823         struct net_device *dev = info->user_ptr[1];
6824         struct station_info sinfo;
6825         struct sk_buff *msg;
6826         u8 *mac_addr = NULL;
6827         int err;
6828
6829         memset(&sinfo, 0, sizeof(sinfo));
6830
6831         if (!info->attrs[NL80211_ATTR_MAC])
6832                 return -EINVAL;
6833
6834         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6835
6836         if (!rdev->ops->get_station)
6837                 return -EOPNOTSUPP;
6838
6839         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6840         if (err)
6841                 return err;
6842
6843         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6844         if (!msg) {
6845                 cfg80211_sinfo_release_content(&sinfo);
6846                 return -ENOMEM;
6847         }
6848
6849         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6850                                  info->snd_portid, info->snd_seq, 0,
6851                                  rdev, dev, mac_addr, &sinfo) < 0) {
6852                 nlmsg_free(msg);
6853                 return -ENOBUFS;
6854         }
6855
6856         return genlmsg_reply(msg, info);
6857 }
6858
6859 int cfg80211_check_station_change(struct wiphy *wiphy,
6860                                   struct station_parameters *params,
6861                                   enum cfg80211_station_type statype)
6862 {
6863         if (params->listen_interval != -1 &&
6864             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6865                 return -EINVAL;
6866
6867         if (params->support_p2p_ps != -1 &&
6868             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6869                 return -EINVAL;
6870
6871         if (params->aid &&
6872             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6873             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6874                 return -EINVAL;
6875
6876         /* When you run into this, adjust the code below for the new flag */
6877         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6878
6879         switch (statype) {
6880         case CFG80211_STA_MESH_PEER_KERNEL:
6881         case CFG80211_STA_MESH_PEER_USER:
6882                 /*
6883                  * No ignoring the TDLS flag here -- the userspace mesh
6884                  * code doesn't have the bug of including TDLS in the
6885                  * mask everywhere.
6886                  */
6887                 if (params->sta_flags_mask &
6888                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6889                                   BIT(NL80211_STA_FLAG_MFP) |
6890                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6891                         return -EINVAL;
6892                 break;
6893         case CFG80211_STA_TDLS_PEER_SETUP:
6894         case CFG80211_STA_TDLS_PEER_ACTIVE:
6895                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6896                         return -EINVAL;
6897                 /* ignore since it can't change */
6898                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6899                 break;
6900         default:
6901                 /* disallow mesh-specific things */
6902                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6903                         return -EINVAL;
6904                 if (params->local_pm)
6905                         return -EINVAL;
6906                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6907                         return -EINVAL;
6908         }
6909
6910         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6911             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6912                 /* TDLS can't be set, ... */
6913                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6914                         return -EINVAL;
6915                 /*
6916                  * ... but don't bother the driver with it. This works around
6917                  * a hostapd/wpa_supplicant issue -- it always includes the
6918                  * TLDS_PEER flag in the mask even for AP mode.
6919                  */
6920                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6921         }
6922
6923         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6924             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6925                 /* reject other things that can't change */
6926                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6927                         return -EINVAL;
6928                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6929                         return -EINVAL;
6930                 if (params->link_sta_params.supported_rates)
6931                         return -EINVAL;
6932                 if (params->ext_capab || params->link_sta_params.ht_capa ||
6933                     params->link_sta_params.vht_capa ||
6934                     params->link_sta_params.he_capa ||
6935                     params->link_sta_params.eht_capa)
6936                         return -EINVAL;
6937         }
6938
6939         if (statype != CFG80211_STA_AP_CLIENT &&
6940             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6941                 if (params->vlan)
6942                         return -EINVAL;
6943         }
6944
6945         switch (statype) {
6946         case CFG80211_STA_AP_MLME_CLIENT:
6947                 /* Use this only for authorizing/unauthorizing a station */
6948                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6949                         return -EOPNOTSUPP;
6950                 break;
6951         case CFG80211_STA_AP_CLIENT:
6952         case CFG80211_STA_AP_CLIENT_UNASSOC:
6953                 /* accept only the listed bits */
6954                 if (params->sta_flags_mask &
6955                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6956                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6957                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6958                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6959                                   BIT(NL80211_STA_FLAG_WME) |
6960                                   BIT(NL80211_STA_FLAG_MFP)))
6961                         return -EINVAL;
6962
6963                 /* but authenticated/associated only if driver handles it */
6964                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6965                     params->sta_flags_mask &
6966                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6967                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6968                         return -EINVAL;
6969                 break;
6970         case CFG80211_STA_IBSS:
6971         case CFG80211_STA_AP_STA:
6972                 /* reject any changes other than AUTHORIZED */
6973                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6974                         return -EINVAL;
6975                 break;
6976         case CFG80211_STA_TDLS_PEER_SETUP:
6977                 /* reject any changes other than AUTHORIZED or WME */
6978                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6979                                                BIT(NL80211_STA_FLAG_WME)))
6980                         return -EINVAL;
6981                 /* force (at least) rates when authorizing */
6982                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6983                     !params->link_sta_params.supported_rates)
6984                         return -EINVAL;
6985                 break;
6986         case CFG80211_STA_TDLS_PEER_ACTIVE:
6987                 /* reject any changes */
6988                 return -EINVAL;
6989         case CFG80211_STA_MESH_PEER_KERNEL:
6990                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6991                         return -EINVAL;
6992                 break;
6993         case CFG80211_STA_MESH_PEER_USER:
6994                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6995                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6996                         return -EINVAL;
6997                 break;
6998         }
6999
7000         /*
7001          * Older kernel versions ignored this attribute entirely, so don't
7002          * reject attempts to update it but mark it as unused instead so the
7003          * driver won't look at the data.
7004          */
7005         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
7006             statype != CFG80211_STA_TDLS_PEER_SETUP)
7007                 params->link_sta_params.opmode_notif_used = false;
7008
7009         return 0;
7010 }
7011 EXPORT_SYMBOL(cfg80211_check_station_change);
7012
7013 /*
7014  * Get vlan interface making sure it is running and on the right wiphy.
7015  */
7016 static struct net_device *get_vlan(struct genl_info *info,
7017                                    struct cfg80211_registered_device *rdev)
7018 {
7019         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
7020         struct net_device *v;
7021         int ret;
7022
7023         if (!vlanattr)
7024                 return NULL;
7025
7026         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
7027         if (!v)
7028                 return ERR_PTR(-ENODEV);
7029
7030         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
7031                 ret = -EINVAL;
7032                 goto error;
7033         }
7034
7035         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
7036             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7037             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
7038                 ret = -EINVAL;
7039                 goto error;
7040         }
7041
7042         if (!netif_running(v)) {
7043                 ret = -ENETDOWN;
7044                 goto error;
7045         }
7046
7047         return v;
7048  error:
7049         dev_put(v);
7050         return ERR_PTR(ret);
7051 }
7052
7053 static int nl80211_parse_sta_wme(struct genl_info *info,
7054                                  struct station_parameters *params)
7055 {
7056         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
7057         struct nlattr *nla;
7058         int err;
7059
7060         /* parse WME attributes if present */
7061         if (!info->attrs[NL80211_ATTR_STA_WME])
7062                 return 0;
7063
7064         nla = info->attrs[NL80211_ATTR_STA_WME];
7065         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
7066                                           nl80211_sta_wme_policy,
7067                                           info->extack);
7068         if (err)
7069                 return err;
7070
7071         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
7072                 params->uapsd_queues = nla_get_u8(
7073                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
7074         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
7075                 return -EINVAL;
7076
7077         if (tb[NL80211_STA_WME_MAX_SP])
7078                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
7079
7080         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
7081                 return -EINVAL;
7082
7083         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
7084
7085         return 0;
7086 }
7087
7088 static int nl80211_parse_sta_channel_info(struct genl_info *info,
7089                                       struct station_parameters *params)
7090 {
7091         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
7092                 params->supported_channels =
7093                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
7094                 params->supported_channels_len =
7095                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
7096                 /*
7097                  * Need to include at least one (first channel, number of
7098                  * channels) tuple for each subband (checked in policy),
7099                  * and must have proper tuples for the rest of the data as well.
7100                  */
7101                 if (params->supported_channels_len % 2)
7102                         return -EINVAL;
7103         }
7104
7105         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
7106                 params->supported_oper_classes =
7107                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
7108                 params->supported_oper_classes_len =
7109                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
7110         }
7111         return 0;
7112 }
7113
7114 static int nl80211_set_station_tdls(struct genl_info *info,
7115                                     struct station_parameters *params)
7116 {
7117         int err;
7118         /* Dummy STA entry gets updated once the peer capabilities are known */
7119         if (info->attrs[NL80211_ATTR_PEER_AID])
7120                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7121         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7122                 params->link_sta_params.ht_capa =
7123                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7124         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7125                 params->link_sta_params.vht_capa =
7126                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7127         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7128                 params->link_sta_params.he_capa =
7129                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7130                 params->link_sta_params.he_capa_len =
7131                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7132
7133                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7134                         params->link_sta_params.eht_capa =
7135                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7136                         params->link_sta_params.eht_capa_len =
7137                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7138
7139                         if (!ieee80211_eht_capa_size_ok((const u8 *)params->link_sta_params.he_capa,
7140                                                         (const u8 *)params->link_sta_params.eht_capa,
7141                                                         params->link_sta_params.eht_capa_len,
7142                                                         false))
7143                                 return -EINVAL;
7144                 }
7145         }
7146
7147         err = nl80211_parse_sta_channel_info(info, params);
7148         if (err)
7149                 return err;
7150
7151         return nl80211_parse_sta_wme(info, params);
7152 }
7153
7154 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
7155                                              struct sta_txpwr *txpwr,
7156                                              bool *txpwr_set)
7157 {
7158         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7159         int idx;
7160
7161         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
7162                 if (!rdev->ops->set_tx_power ||
7163                     !wiphy_ext_feature_isset(&rdev->wiphy,
7164                                          NL80211_EXT_FEATURE_STA_TX_PWR))
7165                         return -EOPNOTSUPP;
7166
7167                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
7168                 txpwr->type = nla_get_u8(info->attrs[idx]);
7169
7170                 if (txpwr->type == NL80211_TX_POWER_LIMITED) {
7171                         idx = NL80211_ATTR_STA_TX_POWER;
7172
7173                         if (info->attrs[idx])
7174                                 txpwr->power = nla_get_s16(info->attrs[idx]);
7175                         else
7176                                 return -EINVAL;
7177                 }
7178
7179                 *txpwr_set = true;
7180         } else {
7181                 *txpwr_set = false;
7182         }
7183
7184         return 0;
7185 }
7186
7187 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
7188 {
7189         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7190         struct net_device *dev = info->user_ptr[1];
7191         struct station_parameters params;
7192         u8 *mac_addr;
7193         int err;
7194
7195         memset(&params, 0, sizeof(params));
7196
7197         if (!rdev->ops->change_station)
7198                 return -EOPNOTSUPP;
7199
7200         /*
7201          * AID and listen_interval properties can be set only for unassociated
7202          * station. Include these parameters here and will check them in
7203          * cfg80211_check_station_change().
7204          */
7205         if (info->attrs[NL80211_ATTR_STA_AID])
7206                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7207
7208         if (info->attrs[NL80211_ATTR_VLAN_ID])
7209                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7210
7211         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7212                 params.listen_interval =
7213                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7214         else
7215                 params.listen_interval = -1;
7216
7217         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
7218                 params.support_p2p_ps =
7219                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7220         else
7221                 params.support_p2p_ps = -1;
7222
7223         if (!info->attrs[NL80211_ATTR_MAC])
7224                 return -EINVAL;
7225
7226         params.link_sta_params.link_id =
7227                 nl80211_link_id_or_invalid(info->attrs);
7228
7229         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7230                 /* If MLD_ADDR attribute is set then this is an MLD station
7231                  * and the MLD_ADDR attribute holds the MLD address and the
7232                  * MAC attribute holds for the LINK address.
7233                  * In that case, the link_id is also expected to be valid.
7234                  */
7235                 if (params.link_sta_params.link_id < 0)
7236                         return -EINVAL;
7237
7238                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7239                 params.link_sta_params.mld_mac = mac_addr;
7240                 params.link_sta_params.link_mac =
7241                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7242                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7243                         return -EINVAL;
7244         } else {
7245                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7246         }
7247
7248
7249         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
7250                 params.link_sta_params.supported_rates =
7251                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7252                 params.link_sta_params.supported_rates_len =
7253                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7254         }
7255
7256         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7257                 params.capability =
7258                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7259                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7260         }
7261
7262         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7263                 params.ext_capab =
7264                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7265                 params.ext_capab_len =
7266                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7267         }
7268
7269         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7270                 return -EINVAL;
7271
7272         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7273                 params.plink_action =
7274                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7275
7276         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
7277                 params.plink_state =
7278                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
7279                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
7280                         params.peer_aid = nla_get_u16(
7281                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
7282                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
7283         }
7284
7285         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
7286                 params.local_pm = nla_get_u32(
7287                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
7288
7289         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7290                 params.link_sta_params.opmode_notif_used = true;
7291                 params.link_sta_params.opmode_notif =
7292                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7293         }
7294
7295         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7296                 params.link_sta_params.he_6ghz_capa =
7297                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7298
7299         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7300                 params.airtime_weight =
7301                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7302
7303         if (params.airtime_weight &&
7304             !wiphy_ext_feature_isset(&rdev->wiphy,
7305                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7306                 return -EOPNOTSUPP;
7307
7308         err = nl80211_parse_sta_txpower_setting(info,
7309                                                 &params.link_sta_params.txpwr,
7310                                                 &params.link_sta_params.txpwr_set);
7311         if (err)
7312                 return err;
7313
7314         /* Include parameters for TDLS peer (will check later) */
7315         err = nl80211_set_station_tdls(info, &params);
7316         if (err)
7317                 return err;
7318
7319         params.vlan = get_vlan(info, rdev);
7320         if (IS_ERR(params.vlan))
7321                 return PTR_ERR(params.vlan);
7322
7323         switch (dev->ieee80211_ptr->iftype) {
7324         case NL80211_IFTYPE_AP:
7325         case NL80211_IFTYPE_AP_VLAN:
7326         case NL80211_IFTYPE_P2P_GO:
7327         case NL80211_IFTYPE_P2P_CLIENT:
7328         case NL80211_IFTYPE_STATION:
7329         case NL80211_IFTYPE_ADHOC:
7330         case NL80211_IFTYPE_MESH_POINT:
7331                 break;
7332         default:
7333                 err = -EOPNOTSUPP;
7334                 goto out_put_vlan;
7335         }
7336
7337         /* driver will call cfg80211_check_station_change() */
7338         err = rdev_change_station(rdev, dev, mac_addr, &params);
7339
7340  out_put_vlan:
7341         dev_put(params.vlan);
7342
7343         return err;
7344 }
7345
7346 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
7347 {
7348         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7349         int err;
7350         struct net_device *dev = info->user_ptr[1];
7351         struct wireless_dev *wdev = dev->ieee80211_ptr;
7352         struct station_parameters params;
7353         u8 *mac_addr = NULL;
7354         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
7355                          BIT(NL80211_STA_FLAG_ASSOCIATED);
7356
7357         memset(&params, 0, sizeof(params));
7358
7359         if (!rdev->ops->add_station)
7360                 return -EOPNOTSUPP;
7361
7362         if (!info->attrs[NL80211_ATTR_MAC])
7363                 return -EINVAL;
7364
7365         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7366                 return -EINVAL;
7367
7368         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
7369                 return -EINVAL;
7370
7371         if (!info->attrs[NL80211_ATTR_STA_AID] &&
7372             !info->attrs[NL80211_ATTR_PEER_AID])
7373                 return -EINVAL;
7374
7375         params.link_sta_params.link_id =
7376                 nl80211_link_id_or_invalid(info->attrs);
7377
7378         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7379                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7380                 params.link_sta_params.mld_mac = mac_addr;
7381                 params.link_sta_params.link_mac =
7382                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7383                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7384                         return -EINVAL;
7385         } else {
7386                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7387         }
7388
7389         params.link_sta_params.supported_rates =
7390                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7391         params.link_sta_params.supported_rates_len =
7392                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7393         params.listen_interval =
7394                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7395
7396         if (info->attrs[NL80211_ATTR_VLAN_ID])
7397                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7398
7399         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
7400                 params.support_p2p_ps =
7401                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7402         } else {
7403                 /*
7404                  * if not specified, assume it's supported for P2P GO interface,
7405                  * and is NOT supported for AP interface
7406                  */
7407                 params.support_p2p_ps =
7408                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
7409         }
7410
7411         if (info->attrs[NL80211_ATTR_PEER_AID])
7412                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7413         else
7414                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7415
7416         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7417                 params.capability =
7418                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7419                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7420         }
7421
7422         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7423                 params.ext_capab =
7424                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7425                 params.ext_capab_len =
7426                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7427         }
7428
7429         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7430                 params.link_sta_params.ht_capa =
7431                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7432
7433         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7434                 params.link_sta_params.vht_capa =
7435                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7436
7437         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7438                 params.link_sta_params.he_capa =
7439                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7440                 params.link_sta_params.he_capa_len =
7441                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7442
7443                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7444                         params.link_sta_params.eht_capa =
7445                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7446                         params.link_sta_params.eht_capa_len =
7447                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7448
7449                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.link_sta_params.he_capa,
7450                                                         (const u8 *)params.link_sta_params.eht_capa,
7451                                                         params.link_sta_params.eht_capa_len,
7452                                                         false))
7453                                 return -EINVAL;
7454                 }
7455         }
7456
7457         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7458                 params.link_sta_params.he_6ghz_capa =
7459                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7460
7461         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7462                 params.link_sta_params.opmode_notif_used = true;
7463                 params.link_sta_params.opmode_notif =
7464                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7465         }
7466
7467         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7468                 params.plink_action =
7469                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7470
7471         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7472                 params.airtime_weight =
7473                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7474
7475         if (params.airtime_weight &&
7476             !wiphy_ext_feature_isset(&rdev->wiphy,
7477                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7478                 return -EOPNOTSUPP;
7479
7480         err = nl80211_parse_sta_txpower_setting(info,
7481                                                 &params.link_sta_params.txpwr,
7482                                                 &params.link_sta_params.txpwr_set);
7483         if (err)
7484                 return err;
7485
7486         err = nl80211_parse_sta_channel_info(info, &params);
7487         if (err)
7488                 return err;
7489
7490         err = nl80211_parse_sta_wme(info, &params);
7491         if (err)
7492                 return err;
7493
7494         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7495                 return -EINVAL;
7496
7497         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
7498          * as userspace might just pass through the capabilities from the IEs
7499          * directly, rather than enforcing this restriction and returning an
7500          * error in this case.
7501          */
7502         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
7503                 params.link_sta_params.ht_capa = NULL;
7504                 params.link_sta_params.vht_capa = NULL;
7505
7506                 /* HE and EHT require WME */
7507                 if (params.link_sta_params.he_capa_len ||
7508                     params.link_sta_params.he_6ghz_capa ||
7509                     params.link_sta_params.eht_capa_len)
7510                         return -EINVAL;
7511         }
7512
7513         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
7514         if (params.link_sta_params.he_6ghz_capa &&
7515             (params.link_sta_params.ht_capa || params.link_sta_params.vht_capa))
7516                 return -EINVAL;
7517
7518         /* When you run into this, adjust the code below for the new flag */
7519         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
7520
7521         switch (dev->ieee80211_ptr->iftype) {
7522         case NL80211_IFTYPE_AP:
7523         case NL80211_IFTYPE_AP_VLAN:
7524         case NL80211_IFTYPE_P2P_GO:
7525                 /* ignore WME attributes if iface/sta is not capable */
7526                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
7527                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
7528                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7529
7530                 /* TDLS peers cannot be added */
7531                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7532                     info->attrs[NL80211_ATTR_PEER_AID])
7533                         return -EINVAL;
7534                 /* but don't bother the driver with it */
7535                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
7536
7537                 /* allow authenticated/associated only if driver handles it */
7538                 if (!(rdev->wiphy.features &
7539                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
7540                     params.sta_flags_mask & auth_assoc)
7541                         return -EINVAL;
7542
7543                 /* Older userspace, or userspace wanting to be compatible with
7544                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
7545                  * and assoc flags in the mask, but assumes the station will be
7546                  * added as associated anyway since this was the required driver
7547                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
7548                  * introduced.
7549                  * In order to not bother drivers with this quirk in the API
7550                  * set the flags in both the mask and set for new stations in
7551                  * this case.
7552                  */
7553                 if (!(params.sta_flags_mask & auth_assoc)) {
7554                         params.sta_flags_mask |= auth_assoc;
7555                         params.sta_flags_set |= auth_assoc;
7556                 }
7557
7558                 /* must be last in here for error handling */
7559                 params.vlan = get_vlan(info, rdev);
7560                 if (IS_ERR(params.vlan))
7561                         return PTR_ERR(params.vlan);
7562                 break;
7563         case NL80211_IFTYPE_MESH_POINT:
7564                 /* ignore uAPSD data */
7565                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7566
7567                 /* associated is disallowed */
7568                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
7569                         return -EINVAL;
7570                 /* TDLS peers cannot be added */
7571                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7572                     info->attrs[NL80211_ATTR_PEER_AID])
7573                         return -EINVAL;
7574                 break;
7575         case NL80211_IFTYPE_STATION:
7576         case NL80211_IFTYPE_P2P_CLIENT:
7577                 /* ignore uAPSD data */
7578                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7579
7580                 /* these are disallowed */
7581                 if (params.sta_flags_mask &
7582                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
7583                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
7584                         return -EINVAL;
7585                 /* Only TDLS peers can be added */
7586                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
7587                         return -EINVAL;
7588                 /* Can only add if TDLS ... */
7589                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
7590                         return -EOPNOTSUPP;
7591                 /* ... with external setup is supported */
7592                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
7593                         return -EOPNOTSUPP;
7594                 /*
7595                  * Older wpa_supplicant versions always mark the TDLS peer
7596                  * as authorized, but it shouldn't yet be.
7597                  */
7598                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
7599                 break;
7600         default:
7601                 return -EOPNOTSUPP;
7602         }
7603
7604         /* be aware of params.vlan when changing code here */
7605
7606         if (wdev->valid_links) {
7607                 if (params.link_sta_params.link_id < 0) {
7608                         err = -EINVAL;
7609                         goto out;
7610                 }
7611                 if (!(wdev->valid_links & BIT(params.link_sta_params.link_id))) {
7612                         err = -ENOLINK;
7613                         goto out;
7614                 }
7615         } else {
7616                 if (params.link_sta_params.link_id >= 0) {
7617                         err = -EINVAL;
7618                         goto out;
7619                 }
7620         }
7621         err = rdev_add_station(rdev, dev, mac_addr, &params);
7622 out:
7623         dev_put(params.vlan);
7624         return err;
7625 }
7626
7627 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
7628 {
7629         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7630         struct net_device *dev = info->user_ptr[1];
7631         struct station_del_parameters params;
7632
7633         memset(&params, 0, sizeof(params));
7634
7635         if (info->attrs[NL80211_ATTR_MAC])
7636                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
7637
7638         switch (dev->ieee80211_ptr->iftype) {
7639         case NL80211_IFTYPE_AP:
7640         case NL80211_IFTYPE_AP_VLAN:
7641         case NL80211_IFTYPE_MESH_POINT:
7642         case NL80211_IFTYPE_P2P_GO:
7643                 /* always accept these */
7644                 break;
7645         case NL80211_IFTYPE_ADHOC:
7646                 /* conditionally accept */
7647                 if (wiphy_ext_feature_isset(&rdev->wiphy,
7648                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
7649                         break;
7650                 return -EINVAL;
7651         default:
7652                 return -EINVAL;
7653         }
7654
7655         if (!rdev->ops->del_station)
7656                 return -EOPNOTSUPP;
7657
7658         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
7659                 params.subtype =
7660                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
7661                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
7662                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
7663                         return -EINVAL;
7664         } else {
7665                 /* Default to Deauthentication frame */
7666                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
7667         }
7668
7669         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
7670                 params.reason_code =
7671                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7672                 if (params.reason_code == 0)
7673                         return -EINVAL; /* 0 is reserved */
7674         } else {
7675                 /* Default to reason code 2 */
7676                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
7677         }
7678
7679         return rdev_del_station(rdev, dev, &params);
7680 }
7681
7682 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
7683                                 int flags, struct net_device *dev,
7684                                 u8 *dst, u8 *next_hop,
7685                                 struct mpath_info *pinfo)
7686 {
7687         void *hdr;
7688         struct nlattr *pinfoattr;
7689
7690         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
7691         if (!hdr)
7692                 return -1;
7693
7694         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7695             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7696             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
7697             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
7698                 goto nla_put_failure;
7699
7700         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
7701         if (!pinfoattr)
7702                 goto nla_put_failure;
7703         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
7704             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
7705                         pinfo->frame_qlen))
7706                 goto nla_put_failure;
7707         if (((pinfo->filled & MPATH_INFO_SN) &&
7708              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
7709             ((pinfo->filled & MPATH_INFO_METRIC) &&
7710              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
7711                          pinfo->metric)) ||
7712             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
7713              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
7714                          pinfo->exptime)) ||
7715             ((pinfo->filled & MPATH_INFO_FLAGS) &&
7716              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
7717                         pinfo->flags)) ||
7718             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
7719              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
7720                          pinfo->discovery_timeout)) ||
7721             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
7722              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
7723                         pinfo->discovery_retries)) ||
7724             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
7725              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
7726                         pinfo->hop_count)) ||
7727             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
7728              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
7729                          pinfo->path_change_count)))
7730                 goto nla_put_failure;
7731
7732         nla_nest_end(msg, pinfoattr);
7733
7734         genlmsg_end(msg, hdr);
7735         return 0;
7736
7737  nla_put_failure:
7738         genlmsg_cancel(msg, hdr);
7739         return -EMSGSIZE;
7740 }
7741
7742 static int nl80211_dump_mpath(struct sk_buff *skb,
7743                               struct netlink_callback *cb)
7744 {
7745         struct mpath_info pinfo;
7746         struct cfg80211_registered_device *rdev;
7747         struct wireless_dev *wdev;
7748         u8 dst[ETH_ALEN];
7749         u8 next_hop[ETH_ALEN];
7750         int path_idx = cb->args[2];
7751         int err;
7752
7753         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7754         if (err)
7755                 return err;
7756         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7757         __acquire(&rdev->wiphy.mtx);
7758
7759         if (!rdev->ops->dump_mpath) {
7760                 err = -EOPNOTSUPP;
7761                 goto out_err;
7762         }
7763
7764         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7765                 err = -EOPNOTSUPP;
7766                 goto out_err;
7767         }
7768
7769         while (1) {
7770                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
7771                                       next_hop, &pinfo);
7772                 if (err == -ENOENT)
7773                         break;
7774                 if (err)
7775                         goto out_err;
7776
7777                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7778                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7779                                        wdev->netdev, dst, next_hop,
7780                                        &pinfo) < 0)
7781                         goto out;
7782
7783                 path_idx++;
7784         }
7785
7786  out:
7787         cb->args[2] = path_idx;
7788         err = skb->len;
7789  out_err:
7790         wiphy_unlock(&rdev->wiphy);
7791         return err;
7792 }
7793
7794 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
7795 {
7796         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7797         int err;
7798         struct net_device *dev = info->user_ptr[1];
7799         struct mpath_info pinfo;
7800         struct sk_buff *msg;
7801         u8 *dst = NULL;
7802         u8 next_hop[ETH_ALEN];
7803
7804         memset(&pinfo, 0, sizeof(pinfo));
7805
7806         if (!info->attrs[NL80211_ATTR_MAC])
7807                 return -EINVAL;
7808
7809         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7810
7811         if (!rdev->ops->get_mpath)
7812                 return -EOPNOTSUPP;
7813
7814         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7815                 return -EOPNOTSUPP;
7816
7817         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
7818         if (err)
7819                 return err;
7820
7821         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7822         if (!msg)
7823                 return -ENOMEM;
7824
7825         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7826                                  dev, dst, next_hop, &pinfo) < 0) {
7827                 nlmsg_free(msg);
7828                 return -ENOBUFS;
7829         }
7830
7831         return genlmsg_reply(msg, info);
7832 }
7833
7834 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
7835 {
7836         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7837         struct net_device *dev = info->user_ptr[1];
7838         u8 *dst = NULL;
7839         u8 *next_hop = NULL;
7840
7841         if (!info->attrs[NL80211_ATTR_MAC])
7842                 return -EINVAL;
7843
7844         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7845                 return -EINVAL;
7846
7847         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7848         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7849
7850         if (!rdev->ops->change_mpath)
7851                 return -EOPNOTSUPP;
7852
7853         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7854                 return -EOPNOTSUPP;
7855
7856         return rdev_change_mpath(rdev, dev, dst, next_hop);
7857 }
7858
7859 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
7860 {
7861         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7862         struct net_device *dev = info->user_ptr[1];
7863         u8 *dst = NULL;
7864         u8 *next_hop = NULL;
7865
7866         if (!info->attrs[NL80211_ATTR_MAC])
7867                 return -EINVAL;
7868
7869         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7870                 return -EINVAL;
7871
7872         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7873         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7874
7875         if (!rdev->ops->add_mpath)
7876                 return -EOPNOTSUPP;
7877
7878         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7879                 return -EOPNOTSUPP;
7880
7881         return rdev_add_mpath(rdev, dev, dst, next_hop);
7882 }
7883
7884 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7885 {
7886         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7887         struct net_device *dev = info->user_ptr[1];
7888         u8 *dst = NULL;
7889
7890         if (info->attrs[NL80211_ATTR_MAC])
7891                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7892
7893         if (!rdev->ops->del_mpath)
7894                 return -EOPNOTSUPP;
7895
7896         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7897                 return -EOPNOTSUPP;
7898
7899         return rdev_del_mpath(rdev, dev, dst);
7900 }
7901
7902 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7903 {
7904         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7905         int err;
7906         struct net_device *dev = info->user_ptr[1];
7907         struct mpath_info pinfo;
7908         struct sk_buff *msg;
7909         u8 *dst = NULL;
7910         u8 mpp[ETH_ALEN];
7911
7912         memset(&pinfo, 0, sizeof(pinfo));
7913
7914         if (!info->attrs[NL80211_ATTR_MAC])
7915                 return -EINVAL;
7916
7917         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7918
7919         if (!rdev->ops->get_mpp)
7920                 return -EOPNOTSUPP;
7921
7922         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7923                 return -EOPNOTSUPP;
7924
7925         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7926         if (err)
7927                 return err;
7928
7929         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7930         if (!msg)
7931                 return -ENOMEM;
7932
7933         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7934                                dev, dst, mpp, &pinfo) < 0) {
7935                 nlmsg_free(msg);
7936                 return -ENOBUFS;
7937         }
7938
7939         return genlmsg_reply(msg, info);
7940 }
7941
7942 static int nl80211_dump_mpp(struct sk_buff *skb,
7943                             struct netlink_callback *cb)
7944 {
7945         struct mpath_info pinfo;
7946         struct cfg80211_registered_device *rdev;
7947         struct wireless_dev *wdev;
7948         u8 dst[ETH_ALEN];
7949         u8 mpp[ETH_ALEN];
7950         int path_idx = cb->args[2];
7951         int err;
7952
7953         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7954         if (err)
7955                 return err;
7956         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7957         __acquire(&rdev->wiphy.mtx);
7958
7959         if (!rdev->ops->dump_mpp) {
7960                 err = -EOPNOTSUPP;
7961                 goto out_err;
7962         }
7963
7964         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7965                 err = -EOPNOTSUPP;
7966                 goto out_err;
7967         }
7968
7969         while (1) {
7970                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7971                                     mpp, &pinfo);
7972                 if (err == -ENOENT)
7973                         break;
7974                 if (err)
7975                         goto out_err;
7976
7977                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7978                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7979                                        wdev->netdev, dst, mpp,
7980                                        &pinfo) < 0)
7981                         goto out;
7982
7983                 path_idx++;
7984         }
7985
7986  out:
7987         cb->args[2] = path_idx;
7988         err = skb->len;
7989  out_err:
7990         wiphy_unlock(&rdev->wiphy);
7991         return err;
7992 }
7993
7994 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7995 {
7996         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7997         struct net_device *dev = info->user_ptr[1];
7998         struct bss_parameters params;
7999
8000         memset(&params, 0, sizeof(params));
8001         params.link_id = nl80211_link_id_or_invalid(info->attrs);
8002         /* default to not changing parameters */
8003         params.use_cts_prot = -1;
8004         params.use_short_preamble = -1;
8005         params.use_short_slot_time = -1;
8006         params.ap_isolate = -1;
8007         params.ht_opmode = -1;
8008         params.p2p_ctwindow = -1;
8009         params.p2p_opp_ps = -1;
8010
8011         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
8012                 params.use_cts_prot =
8013                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
8014         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
8015                 params.use_short_preamble =
8016                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
8017         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
8018                 params.use_short_slot_time =
8019                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
8020         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8021                 params.basic_rates =
8022                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8023                 params.basic_rates_len =
8024                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8025         }
8026         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
8027                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
8028         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
8029                 params.ht_opmode =
8030                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
8031
8032         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
8033                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8034                         return -EINVAL;
8035                 params.p2p_ctwindow =
8036                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
8037                 if (params.p2p_ctwindow != 0 &&
8038                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
8039                         return -EINVAL;
8040         }
8041
8042         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
8043                 u8 tmp;
8044
8045                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8046                         return -EINVAL;
8047                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
8048                 params.p2p_opp_ps = tmp;
8049                 if (params.p2p_opp_ps &&
8050                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
8051                         return -EINVAL;
8052         }
8053
8054         if (!rdev->ops->change_bss)
8055                 return -EOPNOTSUPP;
8056
8057         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
8058             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8059                 return -EOPNOTSUPP;
8060
8061         return rdev_change_bss(rdev, dev, &params);
8062 }
8063
8064 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
8065 {
8066         char *data = NULL;
8067         bool is_indoor;
8068         enum nl80211_user_reg_hint_type user_reg_hint_type;
8069         u32 owner_nlportid;
8070
8071         /*
8072          * You should only get this when cfg80211 hasn't yet initialized
8073          * completely when built-in to the kernel right between the time
8074          * window between nl80211_init() and regulatory_init(), if that is
8075          * even possible.
8076          */
8077         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
8078                 return -EINPROGRESS;
8079
8080         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
8081                 user_reg_hint_type =
8082                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
8083         else
8084                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
8085
8086         switch (user_reg_hint_type) {
8087         case NL80211_USER_REG_HINT_USER:
8088         case NL80211_USER_REG_HINT_CELL_BASE:
8089                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8090                         return -EINVAL;
8091
8092                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8093                 return regulatory_hint_user(data, user_reg_hint_type);
8094         case NL80211_USER_REG_HINT_INDOOR:
8095                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8096                         owner_nlportid = info->snd_portid;
8097                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
8098                 } else {
8099                         owner_nlportid = 0;
8100                         is_indoor = true;
8101                 }
8102
8103                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
8104         default:
8105                 return -EINVAL;
8106         }
8107 }
8108
8109 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
8110 {
8111         return reg_reload_regdb();
8112 }
8113
8114 static int nl80211_get_mesh_config(struct sk_buff *skb,
8115                                    struct genl_info *info)
8116 {
8117         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8118         struct net_device *dev = info->user_ptr[1];
8119         struct wireless_dev *wdev = dev->ieee80211_ptr;
8120         struct mesh_config cur_params;
8121         int err = 0;
8122         void *hdr;
8123         struct nlattr *pinfoattr;
8124         struct sk_buff *msg;
8125
8126         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8127                 return -EOPNOTSUPP;
8128
8129         if (!rdev->ops->get_mesh_config)
8130                 return -EOPNOTSUPP;
8131
8132         /* If not connected, get default parameters */
8133         if (!wdev->u.mesh.id_len)
8134                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
8135         else
8136                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
8137
8138         if (err)
8139                 return err;
8140
8141         /* Draw up a netlink message to send back */
8142         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8143         if (!msg)
8144                 return -ENOMEM;
8145         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8146                              NL80211_CMD_GET_MESH_CONFIG);
8147         if (!hdr)
8148                 goto out;
8149         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
8150         if (!pinfoattr)
8151                 goto nla_put_failure;
8152         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8153             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
8154                         cur_params.dot11MeshRetryTimeout) ||
8155             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
8156                         cur_params.dot11MeshConfirmTimeout) ||
8157             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
8158                         cur_params.dot11MeshHoldingTimeout) ||
8159             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
8160                         cur_params.dot11MeshMaxPeerLinks) ||
8161             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
8162                        cur_params.dot11MeshMaxRetries) ||
8163             nla_put_u8(msg, NL80211_MESHCONF_TTL,
8164                        cur_params.dot11MeshTTL) ||
8165             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
8166                        cur_params.element_ttl) ||
8167             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8168                        cur_params.auto_open_plinks) ||
8169             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8170                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
8171             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8172                        cur_params.dot11MeshHWMPmaxPREQretries) ||
8173             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
8174                         cur_params.path_refresh_time) ||
8175             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8176                         cur_params.min_discovery_timeout) ||
8177             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8178                         cur_params.dot11MeshHWMPactivePathTimeout) ||
8179             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8180                         cur_params.dot11MeshHWMPpreqMinInterval) ||
8181             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8182                         cur_params.dot11MeshHWMPperrMinInterval) ||
8183             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8184                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
8185             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
8186                        cur_params.dot11MeshHWMPRootMode) ||
8187             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8188                         cur_params.dot11MeshHWMPRannInterval) ||
8189             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8190                        cur_params.dot11MeshGateAnnouncementProtocol) ||
8191             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
8192                        cur_params.dot11MeshForwarding) ||
8193             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
8194                         cur_params.rssi_threshold) ||
8195             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
8196                         cur_params.ht_opmode) ||
8197             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8198                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
8199             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8200                         cur_params.dot11MeshHWMProotInterval) ||
8201             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8202                         cur_params.dot11MeshHWMPconfirmationInterval) ||
8203             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
8204                         cur_params.power_mode) ||
8205             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
8206                         cur_params.dot11MeshAwakeWindowDuration) ||
8207             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
8208                         cur_params.plink_timeout) ||
8209             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
8210                        cur_params.dot11MeshConnectedToMeshGate) ||
8211             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
8212                        cur_params.dot11MeshNolearn) ||
8213             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
8214                        cur_params.dot11MeshConnectedToAuthServer))
8215                 goto nla_put_failure;
8216         nla_nest_end(msg, pinfoattr);
8217         genlmsg_end(msg, hdr);
8218         return genlmsg_reply(msg, info);
8219
8220  nla_put_failure:
8221  out:
8222         nlmsg_free(msg);
8223         return -ENOBUFS;
8224 }
8225
8226 static const struct nla_policy
8227 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
8228         [NL80211_MESHCONF_RETRY_TIMEOUT] =
8229                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8230         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
8231                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8232         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
8233                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8234         [NL80211_MESHCONF_MAX_PEER_LINKS] =
8235                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
8236         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
8237         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8238         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8239         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
8240         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
8241                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
8242         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
8243         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
8244         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
8245         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
8246         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
8247                 NLA_POLICY_MIN(NLA_U16, 1),
8248         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
8249                 NLA_POLICY_MIN(NLA_U16, 1),
8250         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
8251                 NLA_POLICY_MIN(NLA_U16, 1),
8252         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
8253         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
8254                 NLA_POLICY_MIN(NLA_U16, 1),
8255         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
8256         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
8257         [NL80211_MESHCONF_RSSI_THRESHOLD] =
8258                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
8259         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
8260         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
8261         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
8262                 NLA_POLICY_MIN(NLA_U16, 1),
8263         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
8264                 NLA_POLICY_MIN(NLA_U16, 1),
8265         [NL80211_MESHCONF_POWER_MODE] =
8266                 NLA_POLICY_RANGE(NLA_U32,
8267                                  NL80211_MESH_POWER_ACTIVE,
8268                                  NL80211_MESH_POWER_MAX),
8269         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
8270         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
8271         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8272         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8273         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8274 };
8275
8276 static const struct nla_policy
8277         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
8278         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
8279         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
8280         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
8281         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
8282         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
8283         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
8284         [NL80211_MESH_SETUP_IE] =
8285                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
8286                                        IEEE80211_MAX_DATA_LEN),
8287         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
8288 };
8289
8290 static int nl80211_parse_mesh_config(struct genl_info *info,
8291                                      struct mesh_config *cfg,
8292                                      u32 *mask_out)
8293 {
8294         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
8295         u32 mask = 0;
8296         u16 ht_opmode;
8297
8298 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
8299 do {                                                                    \
8300         if (tb[attr]) {                                                 \
8301                 cfg->param = fn(tb[attr]);                              \
8302                 mask |= BIT((attr) - 1);                                \
8303         }                                                               \
8304 } while (0)
8305
8306         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
8307                 return -EINVAL;
8308         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
8309                 return -EINVAL;
8310
8311         /* This makes sure that there aren't more than 32 mesh config
8312          * parameters (otherwise our bitfield scheme would not work.) */
8313         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
8314
8315         /* Fill in the params struct */
8316         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
8317                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
8318         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
8319                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
8320                                   nla_get_u16);
8321         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
8322                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
8323                                   nla_get_u16);
8324         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
8325                                   NL80211_MESHCONF_MAX_PEER_LINKS,
8326                                   nla_get_u16);
8327         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
8328                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
8329         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
8330                                   NL80211_MESHCONF_TTL, nla_get_u8);
8331         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
8332                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
8333         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
8334                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8335                                   nla_get_u8);
8336         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
8337                                   mask,
8338                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8339                                   nla_get_u32);
8340         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
8341                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8342                                   nla_get_u8);
8343         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
8344                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
8345                                   nla_get_u32);
8346         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
8347             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
8348                 return -EINVAL;
8349         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
8350                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8351                                   nla_get_u16);
8352         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
8353                                   mask,
8354                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8355                                   nla_get_u32);
8356         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
8357             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
8358              cfg->dot11MeshHWMPactivePathTimeout > 65535))
8359                 return -EINVAL;
8360         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
8361                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8362                                   nla_get_u16);
8363         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
8364                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8365                                   nla_get_u16);
8366         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8367                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
8368                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8369                                   nla_get_u16);
8370         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
8371                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
8372         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
8373                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8374                                   nla_get_u16);
8375         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
8376                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8377                                   nla_get_u8);
8378         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
8379                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
8380         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
8381                                   NL80211_MESHCONF_RSSI_THRESHOLD,
8382                                   nla_get_s32);
8383         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
8384                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
8385                                   nla_get_u8);
8386         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
8387                                   NL80211_MESHCONF_CONNECTED_TO_AS,
8388                                   nla_get_u8);
8389         /*
8390          * Check HT operation mode based on
8391          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
8392          */
8393         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
8394                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
8395
8396                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
8397                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
8398                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
8399                         return -EINVAL;
8400
8401                 /* NON_HT_STA bit is reserved, but some programs set it */
8402                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
8403
8404                 cfg->ht_opmode = ht_opmode;
8405                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
8406         }
8407         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8408                                   dot11MeshHWMPactivePathToRootTimeout, mask,
8409                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8410                                   nla_get_u32);
8411         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
8412             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
8413              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
8414                 return -EINVAL;
8415         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
8416                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8417                                   nla_get_u16);
8418         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
8419                                   mask,
8420                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8421                                   nla_get_u16);
8422         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
8423                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
8424         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
8425                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
8426         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
8427                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
8428         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
8429                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
8430         if (mask_out)
8431                 *mask_out = mask;
8432
8433         return 0;
8434
8435 #undef FILL_IN_MESH_PARAM_IF_SET
8436 }
8437
8438 static int nl80211_parse_mesh_setup(struct genl_info *info,
8439                                      struct mesh_setup *setup)
8440 {
8441         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8442         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
8443
8444         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
8445                 return -EINVAL;
8446         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
8447                 return -EINVAL;
8448
8449         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
8450                 setup->sync_method =
8451                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
8452                  IEEE80211_SYNC_METHOD_VENDOR :
8453                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
8454
8455         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
8456                 setup->path_sel_proto =
8457                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
8458                  IEEE80211_PATH_PROTOCOL_VENDOR :
8459                  IEEE80211_PATH_PROTOCOL_HWMP;
8460
8461         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
8462                 setup->path_metric =
8463                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
8464                  IEEE80211_PATH_METRIC_VENDOR :
8465                  IEEE80211_PATH_METRIC_AIRTIME;
8466
8467         if (tb[NL80211_MESH_SETUP_IE]) {
8468                 struct nlattr *ieattr =
8469                         tb[NL80211_MESH_SETUP_IE];
8470                 setup->ie = nla_data(ieattr);
8471                 setup->ie_len = nla_len(ieattr);
8472         }
8473         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
8474             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
8475                 return -EINVAL;
8476         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
8477         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
8478         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
8479         if (setup->is_secure)
8480                 setup->user_mpm = true;
8481
8482         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
8483                 if (!setup->user_mpm)
8484                         return -EINVAL;
8485                 setup->auth_id =
8486                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
8487         }
8488
8489         return 0;
8490 }
8491
8492 static int nl80211_update_mesh_config(struct sk_buff *skb,
8493                                       struct genl_info *info)
8494 {
8495         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8496         struct net_device *dev = info->user_ptr[1];
8497         struct wireless_dev *wdev = dev->ieee80211_ptr;
8498         struct mesh_config cfg = {};
8499         u32 mask;
8500         int err;
8501
8502         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8503                 return -EOPNOTSUPP;
8504
8505         if (!rdev->ops->update_mesh_config)
8506                 return -EOPNOTSUPP;
8507
8508         err = nl80211_parse_mesh_config(info, &cfg, &mask);
8509         if (err)
8510                 return err;
8511
8512         if (!wdev->u.mesh.id_len)
8513                 err = -ENOLINK;
8514
8515         if (!err)
8516                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
8517
8518         return err;
8519 }
8520
8521 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
8522                               struct sk_buff *msg)
8523 {
8524         struct nlattr *nl_reg_rules;
8525         unsigned int i;
8526
8527         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
8528             (regdom->dfs_region &&
8529              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
8530                 goto nla_put_failure;
8531
8532         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
8533         if (!nl_reg_rules)
8534                 goto nla_put_failure;
8535
8536         for (i = 0; i < regdom->n_reg_rules; i++) {
8537                 struct nlattr *nl_reg_rule;
8538                 const struct ieee80211_reg_rule *reg_rule;
8539                 const struct ieee80211_freq_range *freq_range;
8540                 const struct ieee80211_power_rule *power_rule;
8541                 unsigned int max_bandwidth_khz;
8542
8543                 reg_rule = &regdom->reg_rules[i];
8544                 freq_range = &reg_rule->freq_range;
8545                 power_rule = &reg_rule->power_rule;
8546
8547                 nl_reg_rule = nla_nest_start_noflag(msg, i);
8548                 if (!nl_reg_rule)
8549                         goto nla_put_failure;
8550
8551                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
8552                 if (!max_bandwidth_khz)
8553                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
8554                                                                   reg_rule);
8555
8556                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
8557                                 reg_rule->flags) ||
8558                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
8559                                 freq_range->start_freq_khz) ||
8560                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
8561                                 freq_range->end_freq_khz) ||
8562                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
8563                                 max_bandwidth_khz) ||
8564                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
8565                                 power_rule->max_antenna_gain) ||
8566                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
8567                                 power_rule->max_eirp) ||
8568                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
8569                                 reg_rule->dfs_cac_ms))
8570                         goto nla_put_failure;
8571
8572                 if ((reg_rule->flags & NL80211_RRF_PSD) &&
8573                     nla_put_s8(msg, NL80211_ATTR_POWER_RULE_PSD,
8574                                reg_rule->psd))
8575                         goto nla_put_failure;
8576
8577                 nla_nest_end(msg, nl_reg_rule);
8578         }
8579
8580         nla_nest_end(msg, nl_reg_rules);
8581         return 0;
8582
8583 nla_put_failure:
8584         return -EMSGSIZE;
8585 }
8586
8587 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
8588 {
8589         const struct ieee80211_regdomain *regdom = NULL;
8590         struct cfg80211_registered_device *rdev;
8591         struct wiphy *wiphy = NULL;
8592         struct sk_buff *msg;
8593         int err = -EMSGSIZE;
8594         void *hdr;
8595
8596         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8597         if (!msg)
8598                 return -ENOBUFS;
8599
8600         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8601                              NL80211_CMD_GET_REG);
8602         if (!hdr)
8603                 goto put_failure;
8604
8605         rtnl_lock();
8606
8607         if (info->attrs[NL80211_ATTR_WIPHY]) {
8608                 bool self_managed;
8609
8610                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8611                 if (IS_ERR(rdev)) {
8612                         err = PTR_ERR(rdev);
8613                         goto nla_put_failure;
8614                 }
8615
8616                 wiphy = &rdev->wiphy;
8617                 self_managed = wiphy->regulatory_flags &
8618                                REGULATORY_WIPHY_SELF_MANAGED;
8619
8620                 rcu_read_lock();
8621
8622                 regdom = get_wiphy_regdom(wiphy);
8623
8624                 /* a self-managed-reg device must have a private regdom */
8625                 if (WARN_ON(!regdom && self_managed)) {
8626                         err = -EINVAL;
8627                         goto nla_put_failure_rcu;
8628                 }
8629
8630                 if (regdom &&
8631                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8632                         goto nla_put_failure_rcu;
8633         } else {
8634                 rcu_read_lock();
8635         }
8636
8637         if (!wiphy && reg_last_request_cell_base() &&
8638             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8639                         NL80211_USER_REG_HINT_CELL_BASE))
8640                 goto nla_put_failure_rcu;
8641
8642         if (!regdom)
8643                 regdom = rcu_dereference(cfg80211_regdomain);
8644
8645         if (nl80211_put_regdom(regdom, msg))
8646                 goto nla_put_failure_rcu;
8647
8648         rcu_read_unlock();
8649
8650         genlmsg_end(msg, hdr);
8651         rtnl_unlock();
8652         return genlmsg_reply(msg, info);
8653
8654 nla_put_failure_rcu:
8655         rcu_read_unlock();
8656 nla_put_failure:
8657         rtnl_unlock();
8658 put_failure:
8659         nlmsg_free(msg);
8660         return err;
8661 }
8662
8663 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
8664                                u32 seq, int flags, struct wiphy *wiphy,
8665                                const struct ieee80211_regdomain *regdom)
8666 {
8667         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8668                                    NL80211_CMD_GET_REG);
8669
8670         if (!hdr)
8671                 return -1;
8672
8673         genl_dump_check_consistent(cb, hdr);
8674
8675         if (nl80211_put_regdom(regdom, msg))
8676                 goto nla_put_failure;
8677
8678         if (!wiphy && reg_last_request_cell_base() &&
8679             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8680                         NL80211_USER_REG_HINT_CELL_BASE))
8681                 goto nla_put_failure;
8682
8683         if (wiphy &&
8684             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8685                 goto nla_put_failure;
8686
8687         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
8688             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
8689                 goto nla_put_failure;
8690
8691         genlmsg_end(msg, hdr);
8692         return 0;
8693
8694 nla_put_failure:
8695         genlmsg_cancel(msg, hdr);
8696         return -EMSGSIZE;
8697 }
8698
8699 static int nl80211_get_reg_dump(struct sk_buff *skb,
8700                                 struct netlink_callback *cb)
8701 {
8702         const struct ieee80211_regdomain *regdom = NULL;
8703         struct cfg80211_registered_device *rdev;
8704         int err, reg_idx, start = cb->args[2];
8705
8706         rcu_read_lock();
8707
8708         if (cfg80211_regdomain && start == 0) {
8709                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8710                                           NLM_F_MULTI, NULL,
8711                                           rcu_dereference(cfg80211_regdomain));
8712                 if (err < 0)
8713                         goto out_err;
8714         }
8715
8716         /* the global regdom is idx 0 */
8717         reg_idx = 1;
8718         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8719                 regdom = get_wiphy_regdom(&rdev->wiphy);
8720                 if (!regdom)
8721                         continue;
8722
8723                 if (++reg_idx <= start)
8724                         continue;
8725
8726                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8727                                           NLM_F_MULTI, &rdev->wiphy, regdom);
8728                 if (err < 0) {
8729                         reg_idx--;
8730                         break;
8731                 }
8732         }
8733
8734         cb->args[2] = reg_idx;
8735         err = skb->len;
8736 out_err:
8737         rcu_read_unlock();
8738         return err;
8739 }
8740
8741 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
8742 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
8743         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
8744         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
8745         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
8746         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
8747         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
8748         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
8749         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
8750 };
8751
8752 static int parse_reg_rule(struct nlattr *tb[],
8753         struct ieee80211_reg_rule *reg_rule)
8754 {
8755         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
8756         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
8757
8758         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
8759                 return -EINVAL;
8760         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
8761                 return -EINVAL;
8762         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
8763                 return -EINVAL;
8764         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
8765                 return -EINVAL;
8766         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
8767                 return -EINVAL;
8768
8769         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
8770
8771         freq_range->start_freq_khz =
8772                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
8773         freq_range->end_freq_khz =
8774                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
8775         freq_range->max_bandwidth_khz =
8776                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
8777
8778         power_rule->max_eirp =
8779                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
8780
8781         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
8782                 power_rule->max_antenna_gain =
8783                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
8784
8785         if (tb[NL80211_ATTR_DFS_CAC_TIME])
8786                 reg_rule->dfs_cac_ms =
8787                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
8788
8789         return 0;
8790 }
8791
8792 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
8793 {
8794         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
8795         struct nlattr *nl_reg_rule;
8796         char *alpha2;
8797         int rem_reg_rules, r;
8798         u32 num_rules = 0, rule_idx = 0;
8799         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
8800         struct ieee80211_regdomain *rd;
8801
8802         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8803                 return -EINVAL;
8804
8805         if (!info->attrs[NL80211_ATTR_REG_RULES])
8806                 return -EINVAL;
8807
8808         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8809
8810         if (info->attrs[NL80211_ATTR_DFS_REGION])
8811                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
8812
8813         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8814                             rem_reg_rules) {
8815                 num_rules++;
8816                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
8817                         return -EINVAL;
8818         }
8819
8820         rtnl_lock();
8821         if (!reg_is_valid_request(alpha2)) {
8822                 r = -EINVAL;
8823                 goto out;
8824         }
8825
8826         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
8827         if (!rd) {
8828                 r = -ENOMEM;
8829                 goto out;
8830         }
8831
8832         rd->n_reg_rules = num_rules;
8833         rd->alpha2[0] = alpha2[0];
8834         rd->alpha2[1] = alpha2[1];
8835
8836         /*
8837          * Disable DFS master mode if the DFS region was
8838          * not supported or known on this kernel.
8839          */
8840         if (reg_supported_dfs_region(dfs_region))
8841                 rd->dfs_region = dfs_region;
8842
8843         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8844                             rem_reg_rules) {
8845                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
8846                                                 nl_reg_rule, reg_rule_policy,
8847                                                 info->extack);
8848                 if (r)
8849                         goto bad_reg;
8850                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
8851                 if (r)
8852                         goto bad_reg;
8853
8854                 rule_idx++;
8855
8856                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
8857                         r = -EINVAL;
8858                         goto bad_reg;
8859                 }
8860         }
8861
8862         r = set_regdom(rd, REGD_SOURCE_CRDA);
8863         /* set_regdom takes ownership of rd */
8864         rd = NULL;
8865  bad_reg:
8866         kfree(rd);
8867  out:
8868         rtnl_unlock();
8869         return r;
8870 }
8871 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8872
8873 static int validate_scan_freqs(struct nlattr *freqs)
8874 {
8875         struct nlattr *attr1, *attr2;
8876         int n_channels = 0, tmp1, tmp2;
8877
8878         nla_for_each_nested(attr1, freqs, tmp1)
8879                 if (nla_len(attr1) != sizeof(u32))
8880                         return 0;
8881
8882         nla_for_each_nested(attr1, freqs, tmp1) {
8883                 n_channels++;
8884                 /*
8885                  * Some hardware has a limited channel list for
8886                  * scanning, and it is pretty much nonsensical
8887                  * to scan for a channel twice, so disallow that
8888                  * and don't require drivers to check that the
8889                  * channel list they get isn't longer than what
8890                  * they can scan, as long as they can scan all
8891                  * the channels they registered at once.
8892                  */
8893                 nla_for_each_nested(attr2, freqs, tmp2)
8894                         if (attr1 != attr2 &&
8895                             nla_get_u32(attr1) == nla_get_u32(attr2))
8896                                 return 0;
8897         }
8898
8899         return n_channels;
8900 }
8901
8902 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8903 {
8904         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8905 }
8906
8907 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8908                             struct cfg80211_bss_selection *bss_select)
8909 {
8910         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8911         struct nlattr *nest;
8912         int err;
8913         bool found = false;
8914         int i;
8915
8916         /* only process one nested attribute */
8917         nest = nla_data(nla);
8918         if (!nla_ok(nest, nla_len(nest)))
8919                 return -EINVAL;
8920
8921         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8922                                           nest, nl80211_bss_select_policy,
8923                                           NULL);
8924         if (err)
8925                 return err;
8926
8927         /* only one attribute may be given */
8928         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8929                 if (attr[i]) {
8930                         if (found)
8931                                 return -EINVAL;
8932                         found = true;
8933                 }
8934         }
8935
8936         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8937
8938         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8939                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8940
8941         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8942                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8943                 bss_select->param.band_pref =
8944                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8945                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8946                         return -EINVAL;
8947         }
8948
8949         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8950                 struct nl80211_bss_select_rssi_adjust *adj_param;
8951
8952                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8953                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8954                 bss_select->param.adjust.band = adj_param->band;
8955                 bss_select->param.adjust.delta = adj_param->delta;
8956                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8957                         return -EINVAL;
8958         }
8959
8960         /* user-space did not provide behaviour attribute */
8961         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8962                 return -EINVAL;
8963
8964         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8965                 return -EINVAL;
8966
8967         return 0;
8968 }
8969
8970 int nl80211_parse_random_mac(struct nlattr **attrs,
8971                              u8 *mac_addr, u8 *mac_addr_mask)
8972 {
8973         int i;
8974
8975         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8976                 eth_zero_addr(mac_addr);
8977                 eth_zero_addr(mac_addr_mask);
8978                 mac_addr[0] = 0x2;
8979                 mac_addr_mask[0] = 0x3;
8980
8981                 return 0;
8982         }
8983
8984         /* need both or none */
8985         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8986                 return -EINVAL;
8987
8988         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8989         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8990
8991         /* don't allow or configure an mcast address */
8992         if (!is_multicast_ether_addr(mac_addr_mask) ||
8993             is_multicast_ether_addr(mac_addr))
8994                 return -EINVAL;
8995
8996         /*
8997          * allow users to pass a MAC address that has bits set outside
8998          * of the mask, but don't bother drivers with having to deal
8999          * with such bits
9000          */
9001         for (i = 0; i < ETH_ALEN; i++)
9002                 mac_addr[i] &= mac_addr_mask[i];
9003
9004         return 0;
9005 }
9006
9007 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev,
9008                                               struct ieee80211_channel *chan)
9009 {
9010         unsigned int link_id;
9011         bool all_ok = true;
9012
9013         lockdep_assert_wiphy(wdev->wiphy);
9014
9015         if (!cfg80211_beaconing_iface_active(wdev))
9016                 return true;
9017
9018         /*
9019          * FIXME: check if we have a free HW resource/link for chan
9020          *
9021          * This, as well as the FIXME below, requires knowing the link
9022          * capabilities of the hardware.
9023          */
9024
9025         /* we cannot leave radar channels */
9026         for_each_valid_link(wdev, link_id) {
9027                 struct cfg80211_chan_def *chandef;
9028
9029                 chandef = wdev_chandef(wdev, link_id);
9030                 if (!chandef || !chandef->chan)
9031                         continue;
9032
9033                 /*
9034                  * FIXME: don't require all_ok, but rather check only the
9035                  *        correct HW resource/link onto which 'chan' falls,
9036                  *        as only that link leaves the channel for doing
9037                  *        the off-channel operation.
9038                  */
9039
9040                 if (chandef->chan->flags & IEEE80211_CHAN_RADAR)
9041                         all_ok = false;
9042         }
9043
9044         if (all_ok)
9045                 return true;
9046
9047         return regulatory_pre_cac_allowed(wdev->wiphy);
9048 }
9049
9050 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
9051                                     enum nl80211_ext_feature_index feat)
9052 {
9053         if (!(flags & flag))
9054                 return true;
9055         if (wiphy_ext_feature_isset(wiphy, feat))
9056                 return true;
9057         return false;
9058 }
9059
9060 static int
9061 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
9062                          void *request, struct nlattr **attrs,
9063                          bool is_sched_scan)
9064 {
9065         u8 *mac_addr, *mac_addr_mask;
9066         u32 *flags;
9067         enum nl80211_feature_flags randomness_flag;
9068
9069         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
9070                 return 0;
9071
9072         if (is_sched_scan) {
9073                 struct cfg80211_sched_scan_request *req = request;
9074
9075                 randomness_flag = wdev ?
9076                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
9077                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
9078                 flags = &req->flags;
9079                 mac_addr = req->mac_addr;
9080                 mac_addr_mask = req->mac_addr_mask;
9081         } else {
9082                 struct cfg80211_scan_request *req = request;
9083
9084                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
9085                 flags = &req->flags;
9086                 mac_addr = req->mac_addr;
9087                 mac_addr_mask = req->mac_addr_mask;
9088         }
9089
9090         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
9091
9092         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
9093              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
9094             !nl80211_check_scan_feat(wiphy, *flags,
9095                                      NL80211_SCAN_FLAG_LOW_SPAN,
9096                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
9097             !nl80211_check_scan_feat(wiphy, *flags,
9098                                      NL80211_SCAN_FLAG_LOW_POWER,
9099                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
9100             !nl80211_check_scan_feat(wiphy, *flags,
9101                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
9102                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
9103             !nl80211_check_scan_feat(wiphy, *flags,
9104                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
9105                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
9106             !nl80211_check_scan_feat(wiphy, *flags,
9107                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
9108                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
9109             !nl80211_check_scan_feat(wiphy, *flags,
9110                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
9111                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
9112             !nl80211_check_scan_feat(wiphy, *flags,
9113                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
9114                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
9115             !nl80211_check_scan_feat(wiphy, *flags,
9116                                      NL80211_SCAN_FLAG_RANDOM_SN,
9117                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
9118             !nl80211_check_scan_feat(wiphy, *flags,
9119                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
9120                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
9121                 return -EOPNOTSUPP;
9122
9123         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
9124                 int err;
9125
9126                 if (!(wiphy->features & randomness_flag) ||
9127                     (wdev && wdev->connected))
9128                         return -EOPNOTSUPP;
9129
9130                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
9131                 if (err)
9132                         return err;
9133         }
9134
9135         return 0;
9136 }
9137
9138 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
9139 {
9140         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9141         struct wireless_dev *wdev = info->user_ptr[1];
9142         struct cfg80211_scan_request *request;
9143         struct nlattr *scan_freqs = NULL;
9144         bool scan_freqs_khz = false;
9145         struct nlattr *attr;
9146         struct wiphy *wiphy;
9147         int err, tmp, n_ssids = 0, n_channels, i;
9148         size_t ie_len, size;
9149
9150         wiphy = &rdev->wiphy;
9151
9152         if (wdev->iftype == NL80211_IFTYPE_NAN)
9153                 return -EOPNOTSUPP;
9154
9155         if (!rdev->ops->scan)
9156                 return -EOPNOTSUPP;
9157
9158         if (rdev->scan_req || rdev->scan_msg)
9159                 return -EBUSY;
9160
9161         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
9162                 if (!wiphy_ext_feature_isset(wiphy,
9163                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
9164                         return -EOPNOTSUPP;
9165                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
9166                 scan_freqs_khz = true;
9167         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
9168                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
9169
9170         if (scan_freqs) {
9171                 n_channels = validate_scan_freqs(scan_freqs);
9172                 if (!n_channels)
9173                         return -EINVAL;
9174         } else {
9175                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9176         }
9177
9178         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
9179                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
9180                         n_ssids++;
9181
9182         if (n_ssids > wiphy->max_scan_ssids)
9183                 return -EINVAL;
9184
9185         if (info->attrs[NL80211_ATTR_IE])
9186                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9187         else
9188                 ie_len = 0;
9189
9190         if (ie_len > wiphy->max_scan_ie_len)
9191                 return -EINVAL;
9192
9193         size = struct_size(request, channels, n_channels);
9194         size = size_add(size, array_size(sizeof(*request->ssids), n_ssids));
9195         size = size_add(size, ie_len);
9196         request = kzalloc(size, GFP_KERNEL);
9197         if (!request)
9198                 return -ENOMEM;
9199
9200         if (n_ssids)
9201                 request->ssids = (void *)&request->channels[n_channels];
9202         request->n_ssids = n_ssids;
9203         if (ie_len) {
9204                 if (n_ssids)
9205                         request->ie = (void *)(request->ssids + n_ssids);
9206                 else
9207                         request->ie = (void *)(request->channels + n_channels);
9208         }
9209
9210         i = 0;
9211         if (scan_freqs) {
9212                 /* user specified, bail out if channel not found */
9213                 nla_for_each_nested(attr, scan_freqs, tmp) {
9214                         struct ieee80211_channel *chan;
9215                         int freq = nla_get_u32(attr);
9216
9217                         if (!scan_freqs_khz)
9218                                 freq = MHZ_TO_KHZ(freq);
9219
9220                         chan = ieee80211_get_channel_khz(wiphy, freq);
9221                         if (!chan) {
9222                                 err = -EINVAL;
9223                                 goto out_free;
9224                         }
9225
9226                         /* ignore disabled channels */
9227                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9228                                 continue;
9229
9230                         request->channels[i] = chan;
9231                         i++;
9232                 }
9233         } else {
9234                 enum nl80211_band band;
9235
9236                 /* all channels */
9237                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9238                         int j;
9239
9240                         if (!wiphy->bands[band])
9241                                 continue;
9242                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9243                                 struct ieee80211_channel *chan;
9244
9245                                 chan = &wiphy->bands[band]->channels[j];
9246
9247                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9248                                         continue;
9249
9250                                 request->channels[i] = chan;
9251                                 i++;
9252                         }
9253                 }
9254         }
9255
9256         if (!i) {
9257                 err = -EINVAL;
9258                 goto out_free;
9259         }
9260
9261         request->n_channels = i;
9262
9263         for (i = 0; i < request->n_channels; i++) {
9264                 struct ieee80211_channel *chan = request->channels[i];
9265
9266                 /* if we can go off-channel to the target channel we're good */
9267                 if (cfg80211_off_channel_oper_allowed(wdev, chan))
9268                         continue;
9269
9270                 if (!cfg80211_wdev_on_sub_chan(wdev, chan, true)) {
9271                         err = -EBUSY;
9272                         goto out_free;
9273                 }
9274         }
9275
9276         i = 0;
9277         if (n_ssids) {
9278                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
9279                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9280                                 err = -EINVAL;
9281                                 goto out_free;
9282                         }
9283                         request->ssids[i].ssid_len = nla_len(attr);
9284                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
9285                         i++;
9286                 }
9287         }
9288
9289         if (info->attrs[NL80211_ATTR_IE]) {
9290                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9291                 memcpy((void *)request->ie,
9292                        nla_data(info->attrs[NL80211_ATTR_IE]),
9293                        request->ie_len);
9294         }
9295
9296         for (i = 0; i < NUM_NL80211_BANDS; i++)
9297                 if (wiphy->bands[i])
9298                         request->rates[i] =
9299                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
9300
9301         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
9302                 nla_for_each_nested(attr,
9303                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
9304                                     tmp) {
9305                         enum nl80211_band band = nla_type(attr);
9306
9307                         if (band < 0 || band >= NUM_NL80211_BANDS) {
9308                                 err = -EINVAL;
9309                                 goto out_free;
9310                         }
9311
9312                         if (!wiphy->bands[band])
9313                                 continue;
9314
9315                         err = ieee80211_get_ratemask(wiphy->bands[band],
9316                                                      nla_data(attr),
9317                                                      nla_len(attr),
9318                                                      &request->rates[band]);
9319                         if (err)
9320                                 goto out_free;
9321                 }
9322         }
9323
9324         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
9325                 request->duration =
9326                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
9327                 request->duration_mandatory =
9328                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
9329         }
9330
9331         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
9332                                        false);
9333         if (err)
9334                 goto out_free;
9335
9336         request->no_cck =
9337                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9338
9339         /* Initial implementation used NL80211_ATTR_MAC to set the specific
9340          * BSSID to scan for. This was problematic because that same attribute
9341          * was already used for another purpose (local random MAC address). The
9342          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
9343          * compatibility with older userspace components, also use the
9344          * NL80211_ATTR_MAC value here if it can be determined to be used for
9345          * the specific BSSID use case instead of the random MAC address
9346          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
9347          */
9348         if (info->attrs[NL80211_ATTR_BSSID])
9349                 memcpy(request->bssid,
9350                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
9351         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
9352                  info->attrs[NL80211_ATTR_MAC])
9353                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
9354                        ETH_ALEN);
9355         else
9356                 eth_broadcast_addr(request->bssid);
9357
9358         request->tsf_report_link_id = nl80211_link_id_or_invalid(info->attrs);
9359         request->wdev = wdev;
9360         request->wiphy = &rdev->wiphy;
9361         request->scan_start = jiffies;
9362
9363         rdev->scan_req = request;
9364         err = cfg80211_scan(rdev);
9365
9366         if (err)
9367                 goto out_free;
9368
9369         nl80211_send_scan_start(rdev, wdev);
9370         dev_hold(wdev->netdev);
9371
9372         return 0;
9373
9374  out_free:
9375         rdev->scan_req = NULL;
9376         kfree(request);
9377
9378         return err;
9379 }
9380
9381 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
9382 {
9383         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9384         struct wireless_dev *wdev = info->user_ptr[1];
9385
9386         if (!rdev->ops->abort_scan)
9387                 return -EOPNOTSUPP;
9388
9389         if (rdev->scan_msg)
9390                 return 0;
9391
9392         if (!rdev->scan_req)
9393                 return -ENOENT;
9394
9395         rdev_abort_scan(rdev, wdev);
9396         return 0;
9397 }
9398
9399 static int
9400 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
9401                                struct cfg80211_sched_scan_request *request,
9402                                struct nlattr **attrs)
9403 {
9404         int tmp, err, i = 0;
9405         struct nlattr *attr;
9406
9407         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9408                 u32 interval;
9409
9410                 /*
9411                  * If scan plans are not specified,
9412                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
9413                  * case one scan plan will be set with the specified scan
9414                  * interval and infinite number of iterations.
9415                  */
9416                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
9417                 if (!interval)
9418                         return -EINVAL;
9419
9420                 request->scan_plans[0].interval =
9421                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
9422                 if (!request->scan_plans[0].interval)
9423                         return -EINVAL;
9424
9425                 if (request->scan_plans[0].interval >
9426                     wiphy->max_sched_scan_plan_interval)
9427                         request->scan_plans[0].interval =
9428                                 wiphy->max_sched_scan_plan_interval;
9429
9430                 return 0;
9431         }
9432
9433         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
9434                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
9435
9436                 if (WARN_ON(i >= n_plans))
9437                         return -EINVAL;
9438
9439                 err = nla_parse_nested_deprecated(plan,
9440                                                   NL80211_SCHED_SCAN_PLAN_MAX,
9441                                                   attr, nl80211_plan_policy,
9442                                                   NULL);
9443                 if (err)
9444                         return err;
9445
9446                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
9447                         return -EINVAL;
9448
9449                 request->scan_plans[i].interval =
9450                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
9451                 if (!request->scan_plans[i].interval ||
9452                     request->scan_plans[i].interval >
9453                     wiphy->max_sched_scan_plan_interval)
9454                         return -EINVAL;
9455
9456                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
9457                         request->scan_plans[i].iterations =
9458                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
9459                         if (!request->scan_plans[i].iterations ||
9460                             (request->scan_plans[i].iterations >
9461                              wiphy->max_sched_scan_plan_iterations))
9462                                 return -EINVAL;
9463                 } else if (i < n_plans - 1) {
9464                         /*
9465                          * All scan plans but the last one must specify
9466                          * a finite number of iterations
9467                          */
9468                         return -EINVAL;
9469                 }
9470
9471                 i++;
9472         }
9473
9474         /*
9475          * The last scan plan must not specify the number of
9476          * iterations, it is supposed to run infinitely
9477          */
9478         if (request->scan_plans[n_plans - 1].iterations)
9479                 return  -EINVAL;
9480
9481         return 0;
9482 }
9483
9484 static int
9485 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
9486                                        struct cfg80211_match_set *match_sets,
9487                                        struct nlattr *tb_band_rssi,
9488                                        s32 rssi_thold)
9489 {
9490         struct nlattr *attr;
9491         int i, tmp, ret = 0;
9492
9493         if (!wiphy_ext_feature_isset(wiphy,
9494                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
9495                 if (tb_band_rssi)
9496                         ret = -EOPNOTSUPP;
9497                 else
9498                         for (i = 0; i < NUM_NL80211_BANDS; i++)
9499                                 match_sets->per_band_rssi_thold[i] =
9500                                         NL80211_SCAN_RSSI_THOLD_OFF;
9501                 return ret;
9502         }
9503
9504         for (i = 0; i < NUM_NL80211_BANDS; i++)
9505                 match_sets->per_band_rssi_thold[i] = rssi_thold;
9506
9507         nla_for_each_nested(attr, tb_band_rssi, tmp) {
9508                 enum nl80211_band band = nla_type(attr);
9509
9510                 if (band < 0 || band >= NUM_NL80211_BANDS)
9511                         return -EINVAL;
9512
9513                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
9514         }
9515
9516         return 0;
9517 }
9518
9519 static struct cfg80211_sched_scan_request *
9520 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
9521                          struct nlattr **attrs, int max_match_sets)
9522 {
9523         struct cfg80211_sched_scan_request *request;
9524         struct nlattr *attr;
9525         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
9526         enum nl80211_band band;
9527         size_t ie_len, size;
9528         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
9529         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
9530
9531         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9532                 n_channels = validate_scan_freqs(
9533                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
9534                 if (!n_channels)
9535                         return ERR_PTR(-EINVAL);
9536         } else {
9537                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9538         }
9539
9540         if (attrs[NL80211_ATTR_SCAN_SSIDS])
9541                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9542                                     tmp)
9543                         n_ssids++;
9544
9545         if (n_ssids > wiphy->max_sched_scan_ssids)
9546                 return ERR_PTR(-EINVAL);
9547
9548         /*
9549          * First, count the number of 'real' matchsets. Due to an issue with
9550          * the old implementation, matchsets containing only the RSSI attribute
9551          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
9552          * RSSI for all matchsets, rather than their own matchset for reporting
9553          * all APs with a strong RSSI. This is needed to be compatible with
9554          * older userspace that treated a matchset with only the RSSI as the
9555          * global RSSI for all other matchsets - if there are other matchsets.
9556          */
9557         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9558                 nla_for_each_nested(attr,
9559                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9560                                     tmp) {
9561                         struct nlattr *rssi;
9562
9563                         err = nla_parse_nested_deprecated(tb,
9564                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9565                                                           attr,
9566                                                           nl80211_match_policy,
9567                                                           NULL);
9568                         if (err)
9569                                 return ERR_PTR(err);
9570
9571                         /* SSID and BSSID are mutually exclusive */
9572                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
9573                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
9574                                 return ERR_PTR(-EINVAL);
9575
9576                         /* add other standalone attributes here */
9577                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
9578                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
9579                                 n_match_sets++;
9580                                 continue;
9581                         }
9582                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9583                         if (rssi)
9584                                 default_match_rssi = nla_get_s32(rssi);
9585                 }
9586         }
9587
9588         /* However, if there's no other matchset, add the RSSI one */
9589         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
9590                 n_match_sets = 1;
9591
9592         if (n_match_sets > max_match_sets)
9593                 return ERR_PTR(-EINVAL);
9594
9595         if (attrs[NL80211_ATTR_IE])
9596                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
9597         else
9598                 ie_len = 0;
9599
9600         if (ie_len > wiphy->max_sched_scan_ie_len)
9601                 return ERR_PTR(-EINVAL);
9602
9603         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9604                 /*
9605                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
9606                  * each scan plan already specifies its own interval
9607                  */
9608                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9609                         return ERR_PTR(-EINVAL);
9610
9611                 nla_for_each_nested(attr,
9612                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
9613                         n_plans++;
9614         } else {
9615                 /*
9616                  * The scan interval attribute is kept for backward
9617                  * compatibility. If no scan plans are specified and sched scan
9618                  * interval is specified, one scan plan will be set with this
9619                  * scan interval and infinite number of iterations.
9620                  */
9621                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9622                         return ERR_PTR(-EINVAL);
9623
9624                 n_plans = 1;
9625         }
9626
9627         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
9628                 return ERR_PTR(-EINVAL);
9629
9630         if (!wiphy_ext_feature_isset(
9631                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
9632             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
9633              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
9634                 return ERR_PTR(-EINVAL);
9635
9636         size = struct_size(request, channels, n_channels);
9637         size = size_add(size, array_size(sizeof(*request->ssids), n_ssids));
9638         size = size_add(size, array_size(sizeof(*request->match_sets),
9639                                          n_match_sets));
9640         size = size_add(size, array_size(sizeof(*request->scan_plans),
9641                                          n_plans));
9642         size = size_add(size, ie_len);
9643         request = kzalloc(size, GFP_KERNEL);
9644         if (!request)
9645                 return ERR_PTR(-ENOMEM);
9646
9647         if (n_ssids)
9648                 request->ssids = (void *)&request->channels[n_channels];
9649         request->n_ssids = n_ssids;
9650         if (ie_len) {
9651                 if (n_ssids)
9652                         request->ie = (void *)(request->ssids + n_ssids);
9653                 else
9654                         request->ie = (void *)(request->channels + n_channels);
9655         }
9656
9657         if (n_match_sets) {
9658                 if (request->ie)
9659                         request->match_sets = (void *)(request->ie + ie_len);
9660                 else if (n_ssids)
9661                         request->match_sets =
9662                                 (void *)(request->ssids + n_ssids);
9663                 else
9664                         request->match_sets =
9665                                 (void *)(request->channels + n_channels);
9666         }
9667         request->n_match_sets = n_match_sets;
9668
9669         if (n_match_sets)
9670                 request->scan_plans = (void *)(request->match_sets +
9671                                                n_match_sets);
9672         else if (request->ie)
9673                 request->scan_plans = (void *)(request->ie + ie_len);
9674         else if (n_ssids)
9675                 request->scan_plans = (void *)(request->ssids + n_ssids);
9676         else
9677                 request->scan_plans = (void *)(request->channels + n_channels);
9678
9679         request->n_scan_plans = n_plans;
9680
9681         i = 0;
9682         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9683                 /* user specified, bail out if channel not found */
9684                 nla_for_each_nested(attr,
9685                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
9686                                     tmp) {
9687                         struct ieee80211_channel *chan;
9688
9689                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
9690
9691                         if (!chan) {
9692                                 err = -EINVAL;
9693                                 goto out_free;
9694                         }
9695
9696                         /* ignore disabled channels */
9697                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9698                                 continue;
9699
9700                         request->channels[i] = chan;
9701                         i++;
9702                 }
9703         } else {
9704                 /* all channels */
9705                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9706                         int j;
9707
9708                         if (!wiphy->bands[band])
9709                                 continue;
9710                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9711                                 struct ieee80211_channel *chan;
9712
9713                                 chan = &wiphy->bands[band]->channels[j];
9714
9715                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9716                                         continue;
9717
9718                                 request->channels[i] = chan;
9719                                 i++;
9720                         }
9721                 }
9722         }
9723
9724         if (!i) {
9725                 err = -EINVAL;
9726                 goto out_free;
9727         }
9728
9729         request->n_channels = i;
9730
9731         i = 0;
9732         if (n_ssids) {
9733                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9734                                     tmp) {
9735                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9736                                 err = -EINVAL;
9737                                 goto out_free;
9738                         }
9739                         request->ssids[i].ssid_len = nla_len(attr);
9740                         memcpy(request->ssids[i].ssid, nla_data(attr),
9741                                nla_len(attr));
9742                         i++;
9743                 }
9744         }
9745
9746         i = 0;
9747         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9748                 nla_for_each_nested(attr,
9749                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9750                                     tmp) {
9751                         struct nlattr *ssid, *bssid, *rssi;
9752
9753                         err = nla_parse_nested_deprecated(tb,
9754                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9755                                                           attr,
9756                                                           nl80211_match_policy,
9757                                                           NULL);
9758                         if (err)
9759                                 goto out_free;
9760                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
9761                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
9762
9763                         if (!ssid && !bssid) {
9764                                 i++;
9765                                 continue;
9766                         }
9767
9768                         if (WARN_ON(i >= n_match_sets)) {
9769                                 /* this indicates a programming error,
9770                                  * the loop above should have verified
9771                                  * things properly
9772                                  */
9773                                 err = -EINVAL;
9774                                 goto out_free;
9775                         }
9776
9777                         if (ssid) {
9778                                 memcpy(request->match_sets[i].ssid.ssid,
9779                                        nla_data(ssid), nla_len(ssid));
9780                                 request->match_sets[i].ssid.ssid_len =
9781                                         nla_len(ssid);
9782                         }
9783                         if (bssid)
9784                                 memcpy(request->match_sets[i].bssid,
9785                                        nla_data(bssid), ETH_ALEN);
9786
9787                         /* special attribute - old implementation w/a */
9788                         request->match_sets[i].rssi_thold = default_match_rssi;
9789                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9790                         if (rssi)
9791                                 request->match_sets[i].rssi_thold =
9792                                         nla_get_s32(rssi);
9793
9794                         /* Parse per band RSSI attribute */
9795                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
9796                                 &request->match_sets[i],
9797                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
9798                                 request->match_sets[i].rssi_thold);
9799                         if (err)
9800                                 goto out_free;
9801
9802                         i++;
9803                 }
9804
9805                 /* there was no other matchset, so the RSSI one is alone */
9806                 if (i == 0 && n_match_sets)
9807                         request->match_sets[0].rssi_thold = default_match_rssi;
9808
9809                 request->min_rssi_thold = INT_MAX;
9810                 for (i = 0; i < n_match_sets; i++)
9811                         request->min_rssi_thold =
9812                                 min(request->match_sets[i].rssi_thold,
9813                                     request->min_rssi_thold);
9814         } else {
9815                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
9816         }
9817
9818         if (ie_len) {
9819                 request->ie_len = ie_len;
9820                 memcpy((void *)request->ie,
9821                        nla_data(attrs[NL80211_ATTR_IE]),
9822                        request->ie_len);
9823         }
9824
9825         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
9826         if (err)
9827                 goto out_free;
9828
9829         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
9830                 request->delay =
9831                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
9832
9833         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
9834                 request->relative_rssi = nla_get_s8(
9835                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
9836                 request->relative_rssi_set = true;
9837         }
9838
9839         if (request->relative_rssi_set &&
9840             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
9841                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
9842
9843                 rssi_adjust = nla_data(
9844                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
9845                 request->rssi_adjust.band = rssi_adjust->band;
9846                 request->rssi_adjust.delta = rssi_adjust->delta;
9847                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
9848                         err = -EINVAL;
9849                         goto out_free;
9850                 }
9851         }
9852
9853         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
9854         if (err)
9855                 goto out_free;
9856
9857         request->scan_start = jiffies;
9858
9859         return request;
9860
9861 out_free:
9862         kfree(request);
9863         return ERR_PTR(err);
9864 }
9865
9866 static int nl80211_start_sched_scan(struct sk_buff *skb,
9867                                     struct genl_info *info)
9868 {
9869         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9870         struct net_device *dev = info->user_ptr[1];
9871         struct wireless_dev *wdev = dev->ieee80211_ptr;
9872         struct cfg80211_sched_scan_request *sched_scan_req;
9873         bool want_multi;
9874         int err;
9875
9876         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
9877                 return -EOPNOTSUPP;
9878
9879         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
9880         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
9881         if (err)
9882                 return err;
9883
9884         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9885                                                   info->attrs,
9886                                                   rdev->wiphy.max_match_sets);
9887
9888         err = PTR_ERR_OR_ZERO(sched_scan_req);
9889         if (err)
9890                 goto out_err;
9891
9892         /* leave request id zero for legacy request
9893          * or if driver does not support multi-scheduled scan
9894          */
9895         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9896                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9897
9898         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9899         if (err)
9900                 goto out_free;
9901
9902         sched_scan_req->dev = dev;
9903         sched_scan_req->wiphy = &rdev->wiphy;
9904
9905         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9906                 sched_scan_req->owner_nlportid = info->snd_portid;
9907
9908         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9909
9910         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9911         return 0;
9912
9913 out_free:
9914         kfree(sched_scan_req);
9915 out_err:
9916         return err;
9917 }
9918
9919 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9920                                    struct genl_info *info)
9921 {
9922         struct cfg80211_sched_scan_request *req;
9923         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9924         u64 cookie;
9925
9926         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9927                 return -EOPNOTSUPP;
9928
9929         if (info->attrs[NL80211_ATTR_COOKIE]) {
9930                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9931                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9932         }
9933
9934         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9935                                      struct cfg80211_sched_scan_request,
9936                                      list);
9937         if (!req || req->reqid ||
9938             (req->owner_nlportid &&
9939              req->owner_nlportid != info->snd_portid))
9940                 return -ENOENT;
9941
9942         return cfg80211_stop_sched_scan_req(rdev, req, false);
9943 }
9944
9945 static int nl80211_start_radar_detection(struct sk_buff *skb,
9946                                          struct genl_info *info)
9947 {
9948         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9949         struct net_device *dev = info->user_ptr[1];
9950         struct wireless_dev *wdev = dev->ieee80211_ptr;
9951         struct wiphy *wiphy = wdev->wiphy;
9952         struct cfg80211_chan_def chandef;
9953         enum nl80211_dfs_regions dfs_region;
9954         unsigned int cac_time_ms;
9955         int err = -EINVAL;
9956
9957         flush_delayed_work(&rdev->dfs_update_channels_wk);
9958
9959         wiphy_lock(wiphy);
9960
9961         dfs_region = reg_get_dfs_region(wiphy);
9962         if (dfs_region == NL80211_DFS_UNSET)
9963                 goto unlock;
9964
9965         err = nl80211_parse_chandef(rdev, info, &chandef);
9966         if (err)
9967                 goto unlock;
9968
9969         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9970         if (err < 0)
9971                 goto unlock;
9972
9973         if (err == 0) {
9974                 err = -EINVAL;
9975                 goto unlock;
9976         }
9977
9978         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) {
9979                 err = -EINVAL;
9980                 goto unlock;
9981         }
9982
9983         if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
9984                 err = cfg80211_start_background_radar_detection(rdev, wdev,
9985                                                                 &chandef);
9986                 goto unlock;
9987         }
9988
9989         if (netif_carrier_ok(dev)) {
9990                 err = -EBUSY;
9991                 goto unlock;
9992         }
9993
9994         if (wdev->cac_started) {
9995                 err = -EBUSY;
9996                 goto unlock;
9997         }
9998
9999         /* CAC start is offloaded to HW and can't be started manually */
10000         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) {
10001                 err = -EOPNOTSUPP;
10002                 goto unlock;
10003         }
10004
10005         if (!rdev->ops->start_radar_detection) {
10006                 err = -EOPNOTSUPP;
10007                 goto unlock;
10008         }
10009
10010         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
10011         if (WARN_ON(!cac_time_ms))
10012                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
10013
10014         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
10015         if (!err) {
10016                 wdev->links[0].ap.chandef = chandef;
10017                 wdev->cac_started = true;
10018                 wdev->cac_start_time = jiffies;
10019                 wdev->cac_time_ms = cac_time_ms;
10020         }
10021 unlock:
10022         wiphy_unlock(wiphy);
10023
10024         return err;
10025 }
10026
10027 static int nl80211_notify_radar_detection(struct sk_buff *skb,
10028                                           struct genl_info *info)
10029 {
10030         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10031         struct net_device *dev = info->user_ptr[1];
10032         struct wireless_dev *wdev = dev->ieee80211_ptr;
10033         struct wiphy *wiphy = wdev->wiphy;
10034         struct cfg80211_chan_def chandef;
10035         enum nl80211_dfs_regions dfs_region;
10036         int err;
10037
10038         dfs_region = reg_get_dfs_region(wiphy);
10039         if (dfs_region == NL80211_DFS_UNSET) {
10040                 GENL_SET_ERR_MSG(info,
10041                                  "DFS Region is not set. Unexpected Radar indication");
10042                 return -EINVAL;
10043         }
10044
10045         err = nl80211_parse_chandef(rdev, info, &chandef);
10046         if (err) {
10047                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
10048                 return err;
10049         }
10050
10051         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
10052         if (err < 0) {
10053                 GENL_SET_ERR_MSG(info, "chandef is invalid");
10054                 return err;
10055         }
10056
10057         if (err == 0) {
10058                 GENL_SET_ERR_MSG(info,
10059                                  "Unexpected Radar indication for chandef/iftype");
10060                 return -EINVAL;
10061         }
10062
10063         /* Do not process this notification if radar is already detected
10064          * by kernel on this channel, and return success.
10065          */
10066         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
10067                 return 0;
10068
10069         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
10070
10071         cfg80211_sched_dfs_chan_update(rdev);
10072
10073         rdev->radar_chandef = chandef;
10074
10075         /* Propagate this notification to other radios as well */
10076         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
10077
10078         return 0;
10079 }
10080
10081 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
10082 {
10083         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10084         unsigned int link_id = nl80211_link_id(info->attrs);
10085         struct net_device *dev = info->user_ptr[1];
10086         struct wireless_dev *wdev = dev->ieee80211_ptr;
10087         struct cfg80211_csa_settings params;
10088         struct nlattr **csa_attrs = NULL;
10089         int err;
10090         bool need_new_beacon = false;
10091         bool need_handle_dfs_flag = true;
10092         int len, i;
10093         u32 cs_count;
10094
10095         if (!rdev->ops->channel_switch ||
10096             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
10097                 return -EOPNOTSUPP;
10098
10099         switch (dev->ieee80211_ptr->iftype) {
10100         case NL80211_IFTYPE_AP:
10101         case NL80211_IFTYPE_P2P_GO:
10102                 need_new_beacon = true;
10103                 /* For all modes except AP the handle_dfs flag needs to be
10104                  * supplied to tell the kernel that userspace will handle radar
10105                  * events when they happen. Otherwise a switch to a channel
10106                  * requiring DFS will be rejected.
10107                  */
10108                 need_handle_dfs_flag = false;
10109
10110                 /* useless if AP is not running */
10111                 if (!wdev->links[link_id].ap.beacon_interval)
10112                         return -ENOTCONN;
10113                 break;
10114         case NL80211_IFTYPE_ADHOC:
10115                 if (!wdev->u.ibss.ssid_len)
10116                         return -ENOTCONN;
10117                 break;
10118         case NL80211_IFTYPE_MESH_POINT:
10119                 if (!wdev->u.mesh.id_len)
10120                         return -ENOTCONN;
10121                 break;
10122         default:
10123                 return -EOPNOTSUPP;
10124         }
10125
10126         memset(&params, 0, sizeof(params));
10127         params.beacon_csa.ftm_responder = -1;
10128
10129         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10130             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
10131                 return -EINVAL;
10132
10133         /* only important for AP, IBSS and mesh create IEs internally */
10134         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
10135                 return -EINVAL;
10136
10137         /* Even though the attribute is u32, the specification says
10138          * u8, so let's make sure we don't overflow.
10139          */
10140         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
10141         if (cs_count > 255)
10142                 return -EINVAL;
10143
10144         params.count = cs_count;
10145
10146         if (!need_new_beacon)
10147                 goto skip_beacons;
10148
10149         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after,
10150                                    info->extack);
10151         if (err)
10152                 goto free;
10153
10154         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
10155                             GFP_KERNEL);
10156         if (!csa_attrs) {
10157                 err = -ENOMEM;
10158                 goto free;
10159         }
10160
10161         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
10162                                           info->attrs[NL80211_ATTR_CSA_IES],
10163                                           nl80211_policy, info->extack);
10164         if (err)
10165                 goto free;
10166
10167         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa,
10168                                    info->extack);
10169         if (err)
10170                 goto free;
10171
10172         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
10173                 err = -EINVAL;
10174                 goto free;
10175         }
10176
10177         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
10178         if (!len || (len % sizeof(u16))) {
10179                 err = -EINVAL;
10180                 goto free;
10181         }
10182
10183         params.n_counter_offsets_beacon = len / sizeof(u16);
10184         if (rdev->wiphy.max_num_csa_counters &&
10185             (params.n_counter_offsets_beacon >
10186              rdev->wiphy.max_num_csa_counters)) {
10187                 err = -EINVAL;
10188                 goto free;
10189         }
10190
10191         params.counter_offsets_beacon =
10192                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
10193
10194         /* sanity checks - counters should fit and be the same */
10195         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
10196                 u16 offset = params.counter_offsets_beacon[i];
10197
10198                 if (offset >= params.beacon_csa.tail_len) {
10199                         err = -EINVAL;
10200                         goto free;
10201                 }
10202
10203                 if (params.beacon_csa.tail[offset] != params.count) {
10204                         err = -EINVAL;
10205                         goto free;
10206                 }
10207         }
10208
10209         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
10210                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10211                 if (!len || (len % sizeof(u16))) {
10212                         err = -EINVAL;
10213                         goto free;
10214                 }
10215
10216                 params.n_counter_offsets_presp = len / sizeof(u16);
10217                 if (rdev->wiphy.max_num_csa_counters &&
10218                     (params.n_counter_offsets_presp >
10219                      rdev->wiphy.max_num_csa_counters)) {
10220                         err = -EINVAL;
10221                         goto free;
10222                 }
10223
10224                 params.counter_offsets_presp =
10225                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10226
10227                 /* sanity checks - counters should fit and be the same */
10228                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
10229                         u16 offset = params.counter_offsets_presp[i];
10230
10231                         if (offset >= params.beacon_csa.probe_resp_len) {
10232                                 err = -EINVAL;
10233                                 goto free;
10234                         }
10235
10236                         if (params.beacon_csa.probe_resp[offset] !=
10237                             params.count) {
10238                                 err = -EINVAL;
10239                                 goto free;
10240                         }
10241                 }
10242         }
10243
10244 skip_beacons:
10245         err = nl80211_parse_chandef(rdev, info, &params.chandef);
10246         if (err)
10247                 goto free;
10248
10249         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
10250                                            wdev->iftype)) {
10251                 err = -EINVAL;
10252                 goto free;
10253         }
10254
10255         err = cfg80211_chandef_dfs_required(wdev->wiphy,
10256                                             &params.chandef,
10257                                             wdev->iftype);
10258         if (err < 0)
10259                 goto free;
10260
10261         if (err > 0) {
10262                 params.radar_required = true;
10263                 if (need_handle_dfs_flag &&
10264                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
10265                         err = -EINVAL;
10266                         goto free;
10267                 }
10268         }
10269
10270         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
10271                 params.block_tx = true;
10272
10273         if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
10274                 err = nl80211_parse_punct_bitmap(rdev, info,
10275                                                  &params.chandef,
10276                                                  &params.punct_bitmap);
10277                 if (err)
10278                         goto free;
10279         }
10280
10281         err = rdev_channel_switch(rdev, dev, &params);
10282
10283 free:
10284         kfree(params.beacon_after.mbssid_ies);
10285         kfree(params.beacon_csa.mbssid_ies);
10286         kfree(params.beacon_after.rnr_ies);
10287         kfree(params.beacon_csa.rnr_ies);
10288         kfree(csa_attrs);
10289         return err;
10290 }
10291
10292 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
10293                             u32 seq, int flags,
10294                             struct cfg80211_registered_device *rdev,
10295                             struct wireless_dev *wdev,
10296                             struct cfg80211_internal_bss *intbss)
10297 {
10298         struct cfg80211_bss *res = &intbss->pub;
10299         const struct cfg80211_bss_ies *ies;
10300         unsigned int link_id;
10301         void *hdr;
10302         struct nlattr *bss;
10303
10304         lockdep_assert_wiphy(wdev->wiphy);
10305
10306         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
10307                              NL80211_CMD_NEW_SCAN_RESULTS);
10308         if (!hdr)
10309                 return -1;
10310
10311         genl_dump_check_consistent(cb, hdr);
10312
10313         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
10314                 goto nla_put_failure;
10315         if (wdev->netdev &&
10316             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
10317                 goto nla_put_failure;
10318         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
10319                               NL80211_ATTR_PAD))
10320                 goto nla_put_failure;
10321
10322         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
10323         if (!bss)
10324                 goto nla_put_failure;
10325         if ((!is_zero_ether_addr(res->bssid) &&
10326              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
10327                 goto nla_put_failure;
10328
10329         rcu_read_lock();
10330         /* indicate whether we have probe response data or not */
10331         if (rcu_access_pointer(res->proberesp_ies) &&
10332             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
10333                 goto fail_unlock_rcu;
10334
10335         /* this pointer prefers to be pointed to probe response data
10336          * but is always valid
10337          */
10338         ies = rcu_dereference(res->ies);
10339         if (ies) {
10340                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
10341                                       NL80211_BSS_PAD))
10342                         goto fail_unlock_rcu;
10343                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
10344                                         ies->len, ies->data))
10345                         goto fail_unlock_rcu;
10346         }
10347
10348         /* and this pointer is always (unless driver didn't know) beacon data */
10349         ies = rcu_dereference(res->beacon_ies);
10350         if (ies && ies->from_beacon) {
10351                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
10352                                       NL80211_BSS_PAD))
10353                         goto fail_unlock_rcu;
10354                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
10355                                         ies->len, ies->data))
10356                         goto fail_unlock_rcu;
10357         }
10358         rcu_read_unlock();
10359
10360         if (res->beacon_interval &&
10361             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
10362                 goto nla_put_failure;
10363         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
10364             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
10365             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
10366                         res->channel->freq_offset) ||
10367             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
10368                         jiffies_to_msecs(jiffies - intbss->ts)))
10369                 goto nla_put_failure;
10370
10371         if (intbss->parent_tsf &&
10372             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
10373                                intbss->parent_tsf, NL80211_BSS_PAD) ||
10374              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
10375                      intbss->parent_bssid)))
10376                 goto nla_put_failure;
10377
10378         if (intbss->ts_boottime &&
10379             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
10380                               intbss->ts_boottime, NL80211_BSS_PAD))
10381                 goto nla_put_failure;
10382
10383         if (!nl80211_put_signal(msg, intbss->pub.chains,
10384                                 intbss->pub.chain_signal,
10385                                 NL80211_BSS_CHAIN_SIGNAL))
10386                 goto nla_put_failure;
10387
10388         switch (rdev->wiphy.signal_type) {
10389         case CFG80211_SIGNAL_TYPE_MBM:
10390                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
10391                         goto nla_put_failure;
10392                 break;
10393         case CFG80211_SIGNAL_TYPE_UNSPEC:
10394                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
10395                         goto nla_put_failure;
10396                 break;
10397         default:
10398                 break;
10399         }
10400
10401         switch (wdev->iftype) {
10402         case NL80211_IFTYPE_P2P_CLIENT:
10403         case NL80211_IFTYPE_STATION:
10404                 for_each_valid_link(wdev, link_id) {
10405                         if (intbss == wdev->links[link_id].client.current_bss &&
10406                             (nla_put_u32(msg, NL80211_BSS_STATUS,
10407                                          NL80211_BSS_STATUS_ASSOCIATED) ||
10408                              (wdev->valid_links &&
10409                               (nla_put_u8(msg, NL80211_BSS_MLO_LINK_ID,
10410                                           link_id) ||
10411                                nla_put(msg, NL80211_BSS_MLD_ADDR, ETH_ALEN,
10412                                        wdev->u.client.connected_addr)))))
10413                                 goto nla_put_failure;
10414                 }
10415                 break;
10416         case NL80211_IFTYPE_ADHOC:
10417                 if (intbss == wdev->u.ibss.current_bss &&
10418                     nla_put_u32(msg, NL80211_BSS_STATUS,
10419                                 NL80211_BSS_STATUS_IBSS_JOINED))
10420                         goto nla_put_failure;
10421                 break;
10422         default:
10423                 break;
10424         }
10425
10426         if (nla_put_u32(msg, NL80211_BSS_USE_FOR, res->use_for))
10427                 goto nla_put_failure;
10428
10429         if (res->cannot_use_reasons &&
10430             nla_put_u64_64bit(msg, NL80211_BSS_CANNOT_USE_REASONS,
10431                               res->cannot_use_reasons,
10432                               NL80211_BSS_PAD))
10433                 goto nla_put_failure;
10434
10435         nla_nest_end(msg, bss);
10436
10437         genlmsg_end(msg, hdr);
10438         return 0;
10439
10440  fail_unlock_rcu:
10441         rcu_read_unlock();
10442  nla_put_failure:
10443         genlmsg_cancel(msg, hdr);
10444         return -EMSGSIZE;
10445 }
10446
10447 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
10448 {
10449         struct cfg80211_registered_device *rdev;
10450         struct cfg80211_internal_bss *scan;
10451         struct wireless_dev *wdev;
10452         struct nlattr **attrbuf;
10453         int start = cb->args[2], idx = 0;
10454         bool dump_include_use_data;
10455         int err;
10456
10457         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10458         if (!attrbuf)
10459                 return -ENOMEM;
10460
10461         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10462         if (err) {
10463                 kfree(attrbuf);
10464                 return err;
10465         }
10466         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10467         __acquire(&rdev->wiphy.mtx);
10468
10469         dump_include_use_data =
10470                 attrbuf[NL80211_ATTR_BSS_DUMP_INCLUDE_USE_DATA];
10471         kfree(attrbuf);
10472
10473         spin_lock_bh(&rdev->bss_lock);
10474
10475         /*
10476          * dump_scan will be called multiple times to break up the scan results
10477          * into multiple messages.  It is unlikely that any more bss-es will be
10478          * expired after the first call, so only call only call this on the
10479          * first dump_scan invocation.
10480          */
10481         if (start == 0)
10482                 cfg80211_bss_expire(rdev);
10483
10484         cb->seq = rdev->bss_generation;
10485
10486         list_for_each_entry(scan, &rdev->bss_list, list) {
10487                 if (++idx <= start)
10488                         continue;
10489                 if (!dump_include_use_data &&
10490                     !(scan->pub.use_for & NL80211_BSS_USE_FOR_NORMAL))
10491                         continue;
10492                 if (nl80211_send_bss(skb, cb,
10493                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10494                                 rdev, wdev, scan) < 0) {
10495                         idx--;
10496                         break;
10497                 }
10498         }
10499
10500         spin_unlock_bh(&rdev->bss_lock);
10501
10502         cb->args[2] = idx;
10503         wiphy_unlock(&rdev->wiphy);
10504
10505         return skb->len;
10506 }
10507
10508 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
10509                                int flags, struct net_device *dev,
10510                                bool allow_radio_stats,
10511                                struct survey_info *survey)
10512 {
10513         void *hdr;
10514         struct nlattr *infoattr;
10515
10516         /* skip radio stats if userspace didn't request them */
10517         if (!survey->channel && !allow_radio_stats)
10518                 return 0;
10519
10520         hdr = nl80211hdr_put(msg, portid, seq, flags,
10521                              NL80211_CMD_NEW_SURVEY_RESULTS);
10522         if (!hdr)
10523                 return -ENOMEM;
10524
10525         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10526                 goto nla_put_failure;
10527
10528         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
10529         if (!infoattr)
10530                 goto nla_put_failure;
10531
10532         if (survey->channel &&
10533             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
10534                         survey->channel->center_freq))
10535                 goto nla_put_failure;
10536
10537         if (survey->channel && survey->channel->freq_offset &&
10538             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
10539                         survey->channel->freq_offset))
10540                 goto nla_put_failure;
10541
10542         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
10543             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
10544                 goto nla_put_failure;
10545         if ((survey->filled & SURVEY_INFO_IN_USE) &&
10546             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
10547                 goto nla_put_failure;
10548         if ((survey->filled & SURVEY_INFO_TIME) &&
10549             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
10550                         survey->time, NL80211_SURVEY_INFO_PAD))
10551                 goto nla_put_failure;
10552         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
10553             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
10554                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
10555                 goto nla_put_failure;
10556         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
10557             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
10558                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
10559                 goto nla_put_failure;
10560         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
10561             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
10562                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
10563                 goto nla_put_failure;
10564         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
10565             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
10566                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
10567                 goto nla_put_failure;
10568         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
10569             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
10570                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
10571                 goto nla_put_failure;
10572         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
10573             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
10574                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
10575                 goto nla_put_failure;
10576
10577         nla_nest_end(msg, infoattr);
10578
10579         genlmsg_end(msg, hdr);
10580         return 0;
10581
10582  nla_put_failure:
10583         genlmsg_cancel(msg, hdr);
10584         return -EMSGSIZE;
10585 }
10586
10587 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
10588 {
10589         struct nlattr **attrbuf;
10590         struct survey_info survey;
10591         struct cfg80211_registered_device *rdev;
10592         struct wireless_dev *wdev;
10593         int survey_idx = cb->args[2];
10594         int res;
10595         bool radio_stats;
10596
10597         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10598         if (!attrbuf)
10599                 return -ENOMEM;
10600
10601         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10602         if (res) {
10603                 kfree(attrbuf);
10604                 return res;
10605         }
10606         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10607         __acquire(&rdev->wiphy.mtx);
10608
10609         /* prepare_wdev_dump parsed the attributes */
10610         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
10611
10612         if (!wdev->netdev) {
10613                 res = -EINVAL;
10614                 goto out_err;
10615         }
10616
10617         if (!rdev->ops->dump_survey) {
10618                 res = -EOPNOTSUPP;
10619                 goto out_err;
10620         }
10621
10622         while (1) {
10623                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
10624                 if (res == -ENOENT)
10625                         break;
10626                 if (res)
10627                         goto out_err;
10628
10629                 /* don't send disabled channels, but do send non-channel data */
10630                 if (survey.channel &&
10631                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
10632                         survey_idx++;
10633                         continue;
10634                 }
10635
10636                 if (nl80211_send_survey(skb,
10637                                 NETLINK_CB(cb->skb).portid,
10638                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10639                                 wdev->netdev, radio_stats, &survey) < 0)
10640                         goto out;
10641                 survey_idx++;
10642         }
10643
10644  out:
10645         cb->args[2] = survey_idx;
10646         res = skb->len;
10647  out_err:
10648         kfree(attrbuf);
10649         wiphy_unlock(&rdev->wiphy);
10650         return res;
10651 }
10652
10653 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
10654 {
10655         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
10656                                   NL80211_WPA_VERSION_2 |
10657                                   NL80211_WPA_VERSION_3));
10658 }
10659
10660 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
10661 {
10662         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10663         struct net_device *dev = info->user_ptr[1];
10664         struct ieee80211_channel *chan;
10665         const u8 *bssid, *ssid;
10666         int err, ssid_len;
10667         enum nl80211_auth_type auth_type;
10668         struct key_parse key;
10669         bool local_state_change;
10670         struct cfg80211_auth_request req = {};
10671         u32 freq;
10672
10673         if (!info->attrs[NL80211_ATTR_MAC])
10674                 return -EINVAL;
10675
10676         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
10677                 return -EINVAL;
10678
10679         if (!info->attrs[NL80211_ATTR_SSID])
10680                 return -EINVAL;
10681
10682         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10683                 return -EINVAL;
10684
10685         err = nl80211_parse_key(info, &key);
10686         if (err)
10687                 return err;
10688
10689         if (key.idx >= 0) {
10690                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
10691                         return -EINVAL;
10692                 if (!key.p.key || !key.p.key_len)
10693                         return -EINVAL;
10694                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
10695                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
10696                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
10697                      key.p.key_len != WLAN_KEY_LEN_WEP104))
10698                         return -EINVAL;
10699                 if (key.idx > 3)
10700                         return -EINVAL;
10701         } else {
10702                 key.p.key_len = 0;
10703                 key.p.key = NULL;
10704         }
10705
10706         if (key.idx >= 0) {
10707                 int i;
10708                 bool ok = false;
10709
10710                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
10711                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
10712                                 ok = true;
10713                                 break;
10714                         }
10715                 }
10716                 if (!ok)
10717                         return -EINVAL;
10718         }
10719
10720         if (!rdev->ops->auth)
10721                 return -EOPNOTSUPP;
10722
10723         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10724             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10725                 return -EOPNOTSUPP;
10726
10727         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10728         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10729         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10730                 freq +=
10731                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10732
10733         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10734         if (!chan)
10735                 return -EINVAL;
10736
10737         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10738         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10739
10740         if (info->attrs[NL80211_ATTR_IE]) {
10741                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10742                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10743         }
10744
10745         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10746         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
10747                 return -EINVAL;
10748
10749         if ((auth_type == NL80211_AUTHTYPE_SAE ||
10750              auth_type == NL80211_AUTHTYPE_FILS_SK ||
10751              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
10752              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
10753             !info->attrs[NL80211_ATTR_AUTH_DATA])
10754                 return -EINVAL;
10755
10756         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
10757                 if (auth_type != NL80211_AUTHTYPE_SAE &&
10758                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
10759                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
10760                     auth_type != NL80211_AUTHTYPE_FILS_PK)
10761                         return -EINVAL;
10762                 req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
10763                 req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
10764         }
10765
10766         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10767
10768         /*
10769          * Since we no longer track auth state, ignore
10770          * requests to only change local state.
10771          */
10772         if (local_state_change)
10773                 return 0;
10774
10775         req.auth_type = auth_type;
10776         req.key = key.p.key;
10777         req.key_len = key.p.key_len;
10778         req.key_idx = key.idx;
10779         req.link_id = nl80211_link_id_or_invalid(info->attrs);
10780         if (req.link_id >= 0) {
10781                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10782                         return -EINVAL;
10783                 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
10784                         return -EINVAL;
10785                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10786                 if (!is_valid_ether_addr(req.ap_mld_addr))
10787                         return -EINVAL;
10788         }
10789
10790         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
10791                                    IEEE80211_BSS_TYPE_ESS,
10792                                    IEEE80211_PRIVACY_ANY);
10793         if (!req.bss)
10794                 return -ENOENT;
10795
10796         err = cfg80211_mlme_auth(rdev, dev, &req);
10797
10798         cfg80211_put_bss(&rdev->wiphy, req.bss);
10799
10800         return err;
10801 }
10802
10803 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
10804                                      struct genl_info *info)
10805 {
10806         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10807                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
10808                 return -EINVAL;
10809         }
10810
10811         if (!rdev->ops->tx_control_port ||
10812             !wiphy_ext_feature_isset(&rdev->wiphy,
10813                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
10814                 return -EOPNOTSUPP;
10815
10816         return 0;
10817 }
10818
10819 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
10820                                    struct genl_info *info,
10821                                    struct cfg80211_crypto_settings *settings,
10822                                    int cipher_limit)
10823 {
10824         memset(settings, 0, sizeof(*settings));
10825
10826         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
10827
10828         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
10829                 u16 proto;
10830
10831                 proto = nla_get_u16(
10832                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
10833                 settings->control_port_ethertype = cpu_to_be16(proto);
10834                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
10835                     proto != ETH_P_PAE)
10836                         return -EINVAL;
10837                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
10838                         settings->control_port_no_encrypt = true;
10839         } else
10840                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
10841
10842         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10843                 int r = validate_pae_over_nl80211(rdev, info);
10844
10845                 if (r < 0)
10846                         return r;
10847
10848                 settings->control_port_over_nl80211 = true;
10849
10850                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
10851                         settings->control_port_no_preauth = true;
10852         }
10853
10854         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
10855                 void *data;
10856                 int len, i;
10857
10858                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10859                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10860                 settings->n_ciphers_pairwise = len / sizeof(u32);
10861
10862                 if (len % sizeof(u32))
10863                         return -EINVAL;
10864
10865                 if (settings->n_ciphers_pairwise > cipher_limit)
10866                         return -EINVAL;
10867
10868                 memcpy(settings->ciphers_pairwise, data, len);
10869
10870                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
10871                         if (!cfg80211_supported_cipher_suite(
10872                                         &rdev->wiphy,
10873                                         settings->ciphers_pairwise[i]))
10874                                 return -EINVAL;
10875         }
10876
10877         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
10878                 settings->cipher_group =
10879                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
10880                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
10881                                                      settings->cipher_group))
10882                         return -EINVAL;
10883         }
10884
10885         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
10886                 settings->wpa_versions =
10887                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
10888                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
10889                         return -EINVAL;
10890         }
10891
10892         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
10893                 void *data;
10894                 int len;
10895
10896                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
10897                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
10898                 settings->n_akm_suites = len / sizeof(u32);
10899
10900                 if (len % sizeof(u32))
10901                         return -EINVAL;
10902
10903                 if (settings->n_akm_suites > rdev->wiphy.max_num_akm_suites)
10904                         return -EINVAL;
10905
10906                 memcpy(settings->akm_suites, data, len);
10907         }
10908
10909         if (info->attrs[NL80211_ATTR_PMK]) {
10910                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
10911                         return -EINVAL;
10912                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10913                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
10914                     !wiphy_ext_feature_isset(&rdev->wiphy,
10915                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
10916                         return -EINVAL;
10917                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10918         }
10919
10920         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
10921                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10922                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
10923                     !wiphy_ext_feature_isset(&rdev->wiphy,
10924                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
10925                         return -EINVAL;
10926                 settings->sae_pwd =
10927                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10928                 settings->sae_pwd_len =
10929                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10930         }
10931
10932         if (info->attrs[NL80211_ATTR_SAE_PWE])
10933                 settings->sae_pwe =
10934                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
10935         else
10936                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
10937
10938         return 0;
10939 }
10940
10941 static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev,
10942                                               const u8 *ssid, int ssid_len,
10943                                               struct nlattr **attrs,
10944                                               int assoc_link_id, int link_id)
10945 {
10946         struct ieee80211_channel *chan;
10947         struct cfg80211_bss *bss;
10948         const u8 *bssid;
10949         u32 freq, use_for = 0;
10950
10951         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_WIPHY_FREQ])
10952                 return ERR_PTR(-EINVAL);
10953
10954         bssid = nla_data(attrs[NL80211_ATTR_MAC]);
10955
10956         freq = MHZ_TO_KHZ(nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]));
10957         if (attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10958                 freq += nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10959
10960         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10961         if (!chan)
10962                 return ERR_PTR(-EINVAL);
10963
10964         if (assoc_link_id >= 0)
10965                 use_for = NL80211_BSS_USE_FOR_MLD_LINK;
10966         if (assoc_link_id == link_id)
10967                 use_for |= NL80211_BSS_USE_FOR_NORMAL;
10968
10969         bss = __cfg80211_get_bss(&rdev->wiphy, chan, bssid,
10970                                  ssid, ssid_len,
10971                                  IEEE80211_BSS_TYPE_ESS,
10972                                  IEEE80211_PRIVACY_ANY,
10973                                  use_for);
10974         if (!bss)
10975                 return ERR_PTR(-ENOENT);
10976
10977         return bss;
10978 }
10979
10980 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
10981 {
10982         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10983         struct net_device *dev = info->user_ptr[1];
10984         struct cfg80211_assoc_request req = {};
10985         struct nlattr **attrs = NULL;
10986         const u8 *ap_addr, *ssid;
10987         unsigned int link_id;
10988         int err, ssid_len;
10989
10990         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10991             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10992                 return -EPERM;
10993
10994         if (!info->attrs[NL80211_ATTR_SSID])
10995                 return -EINVAL;
10996
10997         if (!rdev->ops->assoc)
10998                 return -EOPNOTSUPP;
10999
11000         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11001             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11002                 return -EOPNOTSUPP;
11003
11004         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11005         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11006
11007         if (info->attrs[NL80211_ATTR_IE]) {
11008                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11009                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11010
11011                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
11012                                            req.ie, req.ie_len)) {
11013                         NL_SET_ERR_MSG_ATTR(info->extack,
11014                                             info->attrs[NL80211_ATTR_IE],
11015                                             "non-inheritance makes no sense");
11016                         return -EINVAL;
11017                 }
11018         }
11019
11020         if (info->attrs[NL80211_ATTR_USE_MFP]) {
11021                 enum nl80211_mfp mfp =
11022                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11023                 if (mfp == NL80211_MFP_REQUIRED)
11024                         req.use_mfp = true;
11025                 else if (mfp != NL80211_MFP_NO)
11026                         return -EINVAL;
11027         }
11028
11029         if (info->attrs[NL80211_ATTR_PREV_BSSID])
11030                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11031
11032         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11033                 req.flags |= ASSOC_REQ_DISABLE_HT;
11034
11035         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11036                 memcpy(&req.ht_capa_mask,
11037                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11038                        sizeof(req.ht_capa_mask));
11039
11040         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11041                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11042                         return -EINVAL;
11043                 memcpy(&req.ht_capa,
11044                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11045                        sizeof(req.ht_capa));
11046         }
11047
11048         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11049                 req.flags |= ASSOC_REQ_DISABLE_VHT;
11050
11051         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11052                 req.flags |= ASSOC_REQ_DISABLE_HE;
11053
11054         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11055                 req.flags |= ASSOC_REQ_DISABLE_EHT;
11056
11057         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11058                 memcpy(&req.vht_capa_mask,
11059                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11060                        sizeof(req.vht_capa_mask));
11061
11062         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11063                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11064                         return -EINVAL;
11065                 memcpy(&req.vht_capa,
11066                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11067                        sizeof(req.vht_capa));
11068         }
11069
11070         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11071                 if (!((rdev->wiphy.features &
11072                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11073                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11074                     !wiphy_ext_feature_isset(&rdev->wiphy,
11075                                              NL80211_EXT_FEATURE_RRM))
11076                         return -EINVAL;
11077                 req.flags |= ASSOC_REQ_USE_RRM;
11078         }
11079
11080         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
11081                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
11082                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
11083                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
11084                         return -EINVAL;
11085                 req.fils_nonces =
11086                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
11087         }
11088
11089         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
11090                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
11091                         return -EINVAL;
11092                 memcpy(&req.s1g_capa_mask,
11093                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
11094                        sizeof(req.s1g_capa_mask));
11095         }
11096
11097         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
11098                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
11099                         return -EINVAL;
11100                 memcpy(&req.s1g_capa,
11101                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
11102                        sizeof(req.s1g_capa));
11103         }
11104
11105         req.link_id = nl80211_link_id_or_invalid(info->attrs);
11106
11107         if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
11108                 unsigned int attrsize = NUM_NL80211_ATTR * sizeof(*attrs);
11109                 struct nlattr *link;
11110                 int rem = 0;
11111
11112                 if (req.link_id < 0)
11113                         return -EINVAL;
11114
11115                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
11116                         return -EINVAL;
11117
11118                 if (info->attrs[NL80211_ATTR_MAC] ||
11119                     info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11120                     !info->attrs[NL80211_ATTR_MLD_ADDR])
11121                         return -EINVAL;
11122
11123                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
11124                 ap_addr = req.ap_mld_addr;
11125
11126                 attrs = kzalloc(attrsize, GFP_KERNEL);
11127                 if (!attrs)
11128                         return -ENOMEM;
11129
11130                 nla_for_each_nested(link,
11131                                     info->attrs[NL80211_ATTR_MLO_LINKS],
11132                                     rem) {
11133                         memset(attrs, 0, attrsize);
11134
11135                         nla_parse_nested(attrs, NL80211_ATTR_MAX,
11136                                          link, NULL, NULL);
11137
11138                         if (!attrs[NL80211_ATTR_MLO_LINK_ID]) {
11139                                 err = -EINVAL;
11140                                 NL_SET_BAD_ATTR(info->extack, link);
11141                                 goto free;
11142                         }
11143
11144                         link_id = nla_get_u8(attrs[NL80211_ATTR_MLO_LINK_ID]);
11145                         /* cannot use the same link ID again */
11146                         if (req.links[link_id].bss) {
11147                                 err = -EINVAL;
11148                                 NL_SET_BAD_ATTR(info->extack, link);
11149                                 goto free;
11150                         }
11151                         req.links[link_id].bss =
11152                                 nl80211_assoc_bss(rdev, ssid, ssid_len, attrs,
11153                                                   req.link_id, link_id);
11154                         if (IS_ERR(req.links[link_id].bss)) {
11155                                 err = PTR_ERR(req.links[link_id].bss);
11156                                 req.links[link_id].bss = NULL;
11157                                 NL_SET_ERR_MSG_ATTR(info->extack,
11158                                                     link, "Error fetching BSS for link");
11159                                 goto free;
11160                         }
11161
11162                         if (attrs[NL80211_ATTR_IE]) {
11163                                 req.links[link_id].elems =
11164                                         nla_data(attrs[NL80211_ATTR_IE]);
11165                                 req.links[link_id].elems_len =
11166                                         nla_len(attrs[NL80211_ATTR_IE]);
11167
11168                                 if (cfg80211_find_elem(WLAN_EID_FRAGMENT,
11169                                                        req.links[link_id].elems,
11170                                                        req.links[link_id].elems_len)) {
11171                                         NL_SET_ERR_MSG_ATTR(info->extack,
11172                                                             attrs[NL80211_ATTR_IE],
11173                                                             "cannot deal with fragmentation");
11174                                         err = -EINVAL;
11175                                         goto free;
11176                                 }
11177
11178                                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
11179                                                            req.links[link_id].elems,
11180                                                            req.links[link_id].elems_len)) {
11181                                         NL_SET_ERR_MSG_ATTR(info->extack,
11182                                                             attrs[NL80211_ATTR_IE],
11183                                                             "cannot deal with non-inheritance");
11184                                         err = -EINVAL;
11185                                         goto free;
11186                                 }
11187                         }
11188
11189                         req.links[link_id].disabled =
11190                                 nla_get_flag(attrs[NL80211_ATTR_MLO_LINK_DISABLED]);
11191                 }
11192
11193                 if (!req.links[req.link_id].bss) {
11194                         err = -EINVAL;
11195                         goto free;
11196                 }
11197
11198                 if (req.links[req.link_id].elems_len) {
11199                         GENL_SET_ERR_MSG(info,
11200                                          "cannot have per-link elems on assoc link");
11201                         err = -EINVAL;
11202                         goto free;
11203                 }
11204
11205                 if (req.links[req.link_id].disabled) {
11206                         GENL_SET_ERR_MSG(info,
11207                                          "cannot have assoc link disabled");
11208                         err = -EINVAL;
11209                         goto free;
11210                 }
11211
11212                 kfree(attrs);
11213                 attrs = NULL;
11214         } else {
11215                 if (req.link_id >= 0)
11216                         return -EINVAL;
11217
11218                 req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs,
11219                                             -1, -1);
11220                 if (IS_ERR(req.bss))
11221                         return PTR_ERR(req.bss);
11222                 ap_addr = req.bss->bssid;
11223         }
11224
11225         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
11226         if (!err) {
11227                 struct nlattr *link;
11228                 int rem = 0;
11229
11230                 err = cfg80211_mlme_assoc(rdev, dev, &req);
11231
11232                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11233                         dev->ieee80211_ptr->conn_owner_nlportid =
11234                                 info->snd_portid;
11235                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
11236                                ap_addr, ETH_ALEN);
11237                 }
11238
11239                 /* Report error from first problematic link */
11240                 if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
11241                         nla_for_each_nested(link,
11242                                             info->attrs[NL80211_ATTR_MLO_LINKS],
11243                                             rem) {
11244                                 struct nlattr *link_id_attr =
11245                                         nla_find_nested(link, NL80211_ATTR_MLO_LINK_ID);
11246
11247                                 if (!link_id_attr)
11248                                         continue;
11249
11250                                 link_id = nla_get_u8(link_id_attr);
11251
11252                                 if (link_id == req.link_id)
11253                                         continue;
11254
11255                                 if (!req.links[link_id].error ||
11256                                     WARN_ON(req.links[link_id].error > 0))
11257                                         continue;
11258
11259                                 WARN_ON(err >= 0);
11260
11261                                 NL_SET_BAD_ATTR(info->extack, link);
11262                                 err = req.links[link_id].error;
11263                                 break;
11264                         }
11265                 }
11266         }
11267
11268 free:
11269         for (link_id = 0; link_id < ARRAY_SIZE(req.links); link_id++)
11270                 cfg80211_put_bss(&rdev->wiphy, req.links[link_id].bss);
11271         cfg80211_put_bss(&rdev->wiphy, req.bss);
11272         kfree(attrs);
11273
11274         return err;
11275 }
11276
11277 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
11278 {
11279         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11280         struct net_device *dev = info->user_ptr[1];
11281         const u8 *ie = NULL, *bssid;
11282         int ie_len = 0;
11283         u16 reason_code;
11284         bool local_state_change;
11285
11286         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11287             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11288                 return -EPERM;
11289
11290         if (!info->attrs[NL80211_ATTR_MAC])
11291                 return -EINVAL;
11292
11293         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11294                 return -EINVAL;
11295
11296         if (!rdev->ops->deauth)
11297                 return -EOPNOTSUPP;
11298
11299         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11300             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11301                 return -EOPNOTSUPP;
11302
11303         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11304
11305         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11306         if (reason_code == 0) {
11307                 /* Reason Code 0 is reserved */
11308                 return -EINVAL;
11309         }
11310
11311         if (info->attrs[NL80211_ATTR_IE]) {
11312                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11313                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11314         }
11315
11316         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11317
11318         return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
11319                                     local_state_change);
11320 }
11321
11322 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
11323 {
11324         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11325         struct net_device *dev = info->user_ptr[1];
11326         const u8 *ie = NULL, *bssid;
11327         int ie_len = 0;
11328         u16 reason_code;
11329         bool local_state_change;
11330
11331         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11332             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11333                 return -EPERM;
11334
11335         if (!info->attrs[NL80211_ATTR_MAC])
11336                 return -EINVAL;
11337
11338         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11339                 return -EINVAL;
11340
11341         if (!rdev->ops->disassoc)
11342                 return -EOPNOTSUPP;
11343
11344         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11345             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11346                 return -EOPNOTSUPP;
11347
11348         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11349
11350         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11351         if (reason_code == 0) {
11352                 /* Reason Code 0 is reserved */
11353                 return -EINVAL;
11354         }
11355
11356         if (info->attrs[NL80211_ATTR_IE]) {
11357                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11358                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11359         }
11360
11361         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11362
11363         return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
11364                                       local_state_change);
11365 }
11366
11367 static bool
11368 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
11369                          int mcast_rate[NUM_NL80211_BANDS],
11370                          int rateval)
11371 {
11372         struct wiphy *wiphy = &rdev->wiphy;
11373         bool found = false;
11374         int band, i;
11375
11376         for (band = 0; band < NUM_NL80211_BANDS; band++) {
11377                 struct ieee80211_supported_band *sband;
11378
11379                 sband = wiphy->bands[band];
11380                 if (!sband)
11381                         continue;
11382
11383                 for (i = 0; i < sband->n_bitrates; i++) {
11384                         if (sband->bitrates[i].bitrate == rateval) {
11385                                 mcast_rate[band] = i + 1;
11386                                 found = true;
11387                                 break;
11388                         }
11389                 }
11390         }
11391
11392         return found;
11393 }
11394
11395 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
11396 {
11397         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11398         struct net_device *dev = info->user_ptr[1];
11399         struct cfg80211_ibss_params ibss;
11400         struct wiphy *wiphy;
11401         struct cfg80211_cached_keys *connkeys = NULL;
11402         int err;
11403
11404         memset(&ibss, 0, sizeof(ibss));
11405
11406         if (!info->attrs[NL80211_ATTR_SSID] ||
11407             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11408                 return -EINVAL;
11409
11410         ibss.beacon_interval = 100;
11411
11412         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
11413                 ibss.beacon_interval =
11414                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11415
11416         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
11417                                            ibss.beacon_interval);
11418         if (err)
11419                 return err;
11420
11421         if (!rdev->ops->join_ibss)
11422                 return -EOPNOTSUPP;
11423
11424         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11425                 return -EOPNOTSUPP;
11426
11427         wiphy = &rdev->wiphy;
11428
11429         if (info->attrs[NL80211_ATTR_MAC]) {
11430                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11431
11432                 if (!is_valid_ether_addr(ibss.bssid))
11433                         return -EINVAL;
11434         }
11435         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11436         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11437
11438         if (info->attrs[NL80211_ATTR_IE]) {
11439                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11440                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11441         }
11442
11443         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
11444         if (err)
11445                 return err;
11446
11447         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
11448                                      NL80211_IFTYPE_ADHOC))
11449                 return -EINVAL;
11450
11451         switch (ibss.chandef.width) {
11452         case NL80211_CHAN_WIDTH_5:
11453         case NL80211_CHAN_WIDTH_10:
11454         case NL80211_CHAN_WIDTH_20_NOHT:
11455                 break;
11456         case NL80211_CHAN_WIDTH_20:
11457         case NL80211_CHAN_WIDTH_40:
11458                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11459                         return -EINVAL;
11460                 break;
11461         case NL80211_CHAN_WIDTH_80:
11462         case NL80211_CHAN_WIDTH_80P80:
11463         case NL80211_CHAN_WIDTH_160:
11464                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11465                         return -EINVAL;
11466                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11467                                              NL80211_EXT_FEATURE_VHT_IBSS))
11468                         return -EINVAL;
11469                 break;
11470         case NL80211_CHAN_WIDTH_320:
11471                 return -EINVAL;
11472         default:
11473                 return -EINVAL;
11474         }
11475
11476         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
11477         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
11478
11479         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11480                 u8 *rates =
11481                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11482                 int n_rates =
11483                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11484                 struct ieee80211_supported_band *sband =
11485                         wiphy->bands[ibss.chandef.chan->band];
11486
11487                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11488                                              &ibss.basic_rates);
11489                 if (err)
11490                         return err;
11491         }
11492
11493         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11494                 memcpy(&ibss.ht_capa_mask,
11495                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11496                        sizeof(ibss.ht_capa_mask));
11497
11498         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11499                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11500                         return -EINVAL;
11501                 memcpy(&ibss.ht_capa,
11502                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11503                        sizeof(ibss.ht_capa));
11504         }
11505
11506         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11507             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
11508                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11509                 return -EINVAL;
11510
11511         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11512                 bool no_ht = false;
11513
11514                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
11515                 if (IS_ERR(connkeys))
11516                         return PTR_ERR(connkeys);
11517
11518                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
11519                     no_ht) {
11520                         kfree_sensitive(connkeys);
11521                         return -EINVAL;
11522                 }
11523         }
11524
11525         ibss.control_port =
11526                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
11527
11528         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11529                 int r = validate_pae_over_nl80211(rdev, info);
11530
11531                 if (r < 0) {
11532                         kfree_sensitive(connkeys);
11533                         return r;
11534                 }
11535
11536                 ibss.control_port_over_nl80211 = true;
11537         }
11538
11539         ibss.userspace_handles_dfs =
11540                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11541
11542         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
11543         if (err)
11544                 kfree_sensitive(connkeys);
11545         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
11546                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11547
11548         return err;
11549 }
11550
11551 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
11552 {
11553         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11554         struct net_device *dev = info->user_ptr[1];
11555
11556         if (!rdev->ops->leave_ibss)
11557                 return -EOPNOTSUPP;
11558
11559         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11560                 return -EOPNOTSUPP;
11561
11562         return cfg80211_leave_ibss(rdev, dev, false);
11563 }
11564
11565 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
11566 {
11567         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11568         struct net_device *dev = info->user_ptr[1];
11569         int mcast_rate[NUM_NL80211_BANDS];
11570         u32 nla_rate;
11571
11572         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
11573             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
11574             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
11575                 return -EOPNOTSUPP;
11576
11577         if (!rdev->ops->set_mcast_rate)
11578                 return -EOPNOTSUPP;
11579
11580         memset(mcast_rate, 0, sizeof(mcast_rate));
11581
11582         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
11583                 return -EINVAL;
11584
11585         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
11586         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
11587                 return -EINVAL;
11588
11589         return rdev_set_mcast_rate(rdev, dev, mcast_rate);
11590 }
11591
11592 static struct sk_buff *
11593 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
11594                             struct wireless_dev *wdev, int approxlen,
11595                             u32 portid, u32 seq, enum nl80211_commands cmd,
11596                             enum nl80211_attrs attr,
11597                             const struct nl80211_vendor_cmd_info *info,
11598                             gfp_t gfp)
11599 {
11600         struct sk_buff *skb;
11601         void *hdr;
11602         struct nlattr *data;
11603
11604         skb = nlmsg_new(approxlen + 100, gfp);
11605         if (!skb)
11606                 return NULL;
11607
11608         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
11609         if (!hdr) {
11610                 kfree_skb(skb);
11611                 return NULL;
11612         }
11613
11614         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11615                 goto nla_put_failure;
11616
11617         if (info) {
11618                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
11619                                 info->vendor_id))
11620                         goto nla_put_failure;
11621                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
11622                                 info->subcmd))
11623                         goto nla_put_failure;
11624         }
11625
11626         if (wdev) {
11627                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11628                                       wdev_id(wdev), NL80211_ATTR_PAD))
11629                         goto nla_put_failure;
11630                 if (wdev->netdev &&
11631                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
11632                                 wdev->netdev->ifindex))
11633                         goto nla_put_failure;
11634         }
11635
11636         data = nla_nest_start_noflag(skb, attr);
11637         if (!data)
11638                 goto nla_put_failure;
11639
11640         ((void **)skb->cb)[0] = rdev;
11641         ((void **)skb->cb)[1] = hdr;
11642         ((void **)skb->cb)[2] = data;
11643
11644         return skb;
11645
11646  nla_put_failure:
11647         kfree_skb(skb);
11648         return NULL;
11649 }
11650
11651 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
11652                                            struct wireless_dev *wdev,
11653                                            enum nl80211_commands cmd,
11654                                            enum nl80211_attrs attr,
11655                                            unsigned int portid,
11656                                            int vendor_event_idx,
11657                                            int approxlen, gfp_t gfp)
11658 {
11659         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11660         const struct nl80211_vendor_cmd_info *info;
11661
11662         switch (cmd) {
11663         case NL80211_CMD_TESTMODE:
11664                 if (WARN_ON(vendor_event_idx != -1))
11665                         return NULL;
11666                 info = NULL;
11667                 break;
11668         case NL80211_CMD_VENDOR:
11669                 if (WARN_ON(vendor_event_idx < 0 ||
11670                             vendor_event_idx >= wiphy->n_vendor_events))
11671                         return NULL;
11672                 info = &wiphy->vendor_events[vendor_event_idx];
11673                 break;
11674         default:
11675                 WARN_ON(1);
11676                 return NULL;
11677         }
11678
11679         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
11680                                            cmd, attr, info, gfp);
11681 }
11682 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
11683
11684 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
11685 {
11686         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11687         void *hdr = ((void **)skb->cb)[1];
11688         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
11689         struct nlattr *data = ((void **)skb->cb)[2];
11690         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
11691
11692         /* clear CB data for netlink core to own from now on */
11693         memset(skb->cb, 0, sizeof(skb->cb));
11694
11695         nla_nest_end(skb, data);
11696         genlmsg_end(skb, hdr);
11697
11698         if (nlhdr->nlmsg_pid) {
11699                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
11700                                 nlhdr->nlmsg_pid);
11701         } else {
11702                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
11703                         mcgrp = NL80211_MCGRP_VENDOR;
11704
11705                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11706                                         skb, 0, mcgrp, gfp);
11707         }
11708 }
11709 EXPORT_SYMBOL(__cfg80211_send_event_skb);
11710
11711 #ifdef CONFIG_NL80211_TESTMODE
11712 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
11713 {
11714         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11715         struct wireless_dev *wdev;
11716         int err;
11717
11718         lockdep_assert_held(&rdev->wiphy.mtx);
11719
11720         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
11721                                           info->attrs);
11722
11723         if (!rdev->ops->testmode_cmd)
11724                 return -EOPNOTSUPP;
11725
11726         if (IS_ERR(wdev)) {
11727                 err = PTR_ERR(wdev);
11728                 if (err != -EINVAL)
11729                         return err;
11730                 wdev = NULL;
11731         } else if (wdev->wiphy != &rdev->wiphy) {
11732                 return -EINVAL;
11733         }
11734
11735         if (!info->attrs[NL80211_ATTR_TESTDATA])
11736                 return -EINVAL;
11737
11738         rdev->cur_cmd_info = info;
11739         err = rdev_testmode_cmd(rdev, wdev,
11740                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
11741                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
11742         rdev->cur_cmd_info = NULL;
11743
11744         return err;
11745 }
11746
11747 static int nl80211_testmode_dump(struct sk_buff *skb,
11748                                  struct netlink_callback *cb)
11749 {
11750         struct cfg80211_registered_device *rdev;
11751         struct nlattr **attrbuf = NULL;
11752         int err;
11753         long phy_idx;
11754         void *data = NULL;
11755         int data_len = 0;
11756
11757         rtnl_lock();
11758
11759         if (cb->args[0]) {
11760                 /*
11761                  * 0 is a valid index, but not valid for args[0],
11762                  * so we need to offset by 1.
11763                  */
11764                 phy_idx = cb->args[0] - 1;
11765
11766                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
11767                 if (!rdev) {
11768                         err = -ENOENT;
11769                         goto out_err;
11770                 }
11771         } else {
11772                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
11773                                   GFP_KERNEL);
11774                 if (!attrbuf) {
11775                         err = -ENOMEM;
11776                         goto out_err;
11777                 }
11778
11779                 err = nlmsg_parse_deprecated(cb->nlh,
11780                                              GENL_HDRLEN + nl80211_fam.hdrsize,
11781                                              attrbuf, nl80211_fam.maxattr,
11782                                              nl80211_policy, NULL);
11783                 if (err)
11784                         goto out_err;
11785
11786                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11787                 if (IS_ERR(rdev)) {
11788                         err = PTR_ERR(rdev);
11789                         goto out_err;
11790                 }
11791                 phy_idx = rdev->wiphy_idx;
11792
11793                 if (attrbuf[NL80211_ATTR_TESTDATA])
11794                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
11795         }
11796
11797         if (cb->args[1]) {
11798                 data = nla_data((void *)cb->args[1]);
11799                 data_len = nla_len((void *)cb->args[1]);
11800         }
11801
11802         if (!rdev->ops->testmode_dump) {
11803                 err = -EOPNOTSUPP;
11804                 goto out_err;
11805         }
11806
11807         while (1) {
11808                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11809                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
11810                                            NL80211_CMD_TESTMODE);
11811                 struct nlattr *tmdata;
11812
11813                 if (!hdr)
11814                         break;
11815
11816                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
11817                         genlmsg_cancel(skb, hdr);
11818                         break;
11819                 }
11820
11821                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
11822                 if (!tmdata) {
11823                         genlmsg_cancel(skb, hdr);
11824                         break;
11825                 }
11826                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
11827                 nla_nest_end(skb, tmdata);
11828
11829                 if (err == -ENOBUFS || err == -ENOENT) {
11830                         genlmsg_cancel(skb, hdr);
11831                         break;
11832                 } else if (err) {
11833                         genlmsg_cancel(skb, hdr);
11834                         goto out_err;
11835                 }
11836
11837                 genlmsg_end(skb, hdr);
11838         }
11839
11840         err = skb->len;
11841         /* see above */
11842         cb->args[0] = phy_idx + 1;
11843  out_err:
11844         kfree(attrbuf);
11845         rtnl_unlock();
11846         return err;
11847 }
11848 #endif
11849
11850 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
11851 {
11852         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11853         struct net_device *dev = info->user_ptr[1];
11854         struct cfg80211_connect_params connect;
11855         struct wiphy *wiphy;
11856         struct cfg80211_cached_keys *connkeys = NULL;
11857         u32 freq = 0;
11858         int err;
11859
11860         memset(&connect, 0, sizeof(connect));
11861
11862         if (!info->attrs[NL80211_ATTR_SSID] ||
11863             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11864                 return -EINVAL;
11865
11866         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11867                 connect.auth_type =
11868                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11869                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
11870                                              NL80211_CMD_CONNECT))
11871                         return -EINVAL;
11872         } else
11873                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
11874
11875         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
11876
11877         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
11878             !wiphy_ext_feature_isset(&rdev->wiphy,
11879                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
11880                 return -EINVAL;
11881         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
11882
11883         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
11884                                       NL80211_MAX_NR_CIPHER_SUITES);
11885         if (err)
11886                 return err;
11887
11888         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11889             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11890                 return -EOPNOTSUPP;
11891
11892         wiphy = &rdev->wiphy;
11893
11894         connect.bg_scan_period = -1;
11895         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
11896                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
11897                 connect.bg_scan_period =
11898                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
11899         }
11900
11901         if (info->attrs[NL80211_ATTR_MAC])
11902                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11903         else if (info->attrs[NL80211_ATTR_MAC_HINT])
11904                 connect.bssid_hint =
11905                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
11906         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11907         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11908
11909         if (info->attrs[NL80211_ATTR_IE]) {
11910                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11911                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11912         }
11913
11914         if (info->attrs[NL80211_ATTR_USE_MFP]) {
11915                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11916                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
11917                     !wiphy_ext_feature_isset(&rdev->wiphy,
11918                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
11919                         return -EOPNOTSUPP;
11920         } else {
11921                 connect.mfp = NL80211_MFP_NO;
11922         }
11923
11924         if (info->attrs[NL80211_ATTR_PREV_BSSID])
11925                 connect.prev_bssid =
11926                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11927
11928         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
11929                 freq = MHZ_TO_KHZ(nla_get_u32(
11930                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
11931         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
11932                 freq +=
11933                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
11934
11935         if (freq) {
11936                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
11937                 if (!connect.channel)
11938                         return -EINVAL;
11939         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
11940                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
11941                 freq = MHZ_TO_KHZ(freq);
11942                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
11943                 if (!connect.channel_hint)
11944                         return -EINVAL;
11945         }
11946
11947         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
11948                 connect.edmg.channels =
11949                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
11950
11951                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
11952                         connect.edmg.bw_config =
11953                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
11954         }
11955
11956         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11957                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
11958                 if (IS_ERR(connkeys))
11959                         return PTR_ERR(connkeys);
11960         }
11961
11962         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11963                 connect.flags |= ASSOC_REQ_DISABLE_HT;
11964
11965         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11966                 memcpy(&connect.ht_capa_mask,
11967                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11968                        sizeof(connect.ht_capa_mask));
11969
11970         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11971                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
11972                         kfree_sensitive(connkeys);
11973                         return -EINVAL;
11974                 }
11975                 memcpy(&connect.ht_capa,
11976                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11977                        sizeof(connect.ht_capa));
11978         }
11979
11980         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11981                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
11982
11983         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11984                 connect.flags |= ASSOC_REQ_DISABLE_HE;
11985
11986         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11987                 connect.flags |= ASSOC_REQ_DISABLE_EHT;
11988
11989         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11990                 memcpy(&connect.vht_capa_mask,
11991                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11992                        sizeof(connect.vht_capa_mask));
11993
11994         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11995                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
11996                         kfree_sensitive(connkeys);
11997                         return -EINVAL;
11998                 }
11999                 memcpy(&connect.vht_capa,
12000                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
12001                        sizeof(connect.vht_capa));
12002         }
12003
12004         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
12005                 if (!((rdev->wiphy.features &
12006                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
12007                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
12008                     !wiphy_ext_feature_isset(&rdev->wiphy,
12009                                              NL80211_EXT_FEATURE_RRM)) {
12010                         kfree_sensitive(connkeys);
12011                         return -EINVAL;
12012                 }
12013                 connect.flags |= ASSOC_REQ_USE_RRM;
12014         }
12015
12016         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
12017         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
12018                 kfree_sensitive(connkeys);
12019                 return -EOPNOTSUPP;
12020         }
12021
12022         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
12023                 /* bss selection makes no sense if bssid is set */
12024                 if (connect.bssid) {
12025                         kfree_sensitive(connkeys);
12026                         return -EINVAL;
12027                 }
12028
12029                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
12030                                        wiphy, &connect.bss_select);
12031                 if (err) {
12032                         kfree_sensitive(connkeys);
12033                         return err;
12034                 }
12035         }
12036
12037         if (wiphy_ext_feature_isset(&rdev->wiphy,
12038                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
12039             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
12040             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
12041             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
12042             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12043                 connect.fils_erp_username =
12044                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12045                 connect.fils_erp_username_len =
12046                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12047                 connect.fils_erp_realm =
12048                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12049                 connect.fils_erp_realm_len =
12050                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12051                 connect.fils_erp_next_seq_num =
12052                         nla_get_u16(
12053                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
12054                 connect.fils_erp_rrk =
12055                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12056                 connect.fils_erp_rrk_len =
12057                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12058         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
12059                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
12060                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
12061                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12062                 kfree_sensitive(connkeys);
12063                 return -EINVAL;
12064         }
12065
12066         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
12067                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
12068                         kfree_sensitive(connkeys);
12069                         GENL_SET_ERR_MSG(info,
12070                                          "external auth requires connection ownership");
12071                         return -EINVAL;
12072                 }
12073                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
12074         }
12075
12076         if (nla_get_flag(info->attrs[NL80211_ATTR_MLO_SUPPORT]))
12077                 connect.flags |= CONNECT_REQ_MLO_SUPPORT;
12078
12079         err = cfg80211_connect(rdev, dev, &connect, connkeys,
12080                                connect.prev_bssid);
12081         if (err)
12082                 kfree_sensitive(connkeys);
12083
12084         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
12085                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
12086                 if (connect.bssid)
12087                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
12088                                connect.bssid, ETH_ALEN);
12089                 else
12090                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
12091         }
12092
12093         return err;
12094 }
12095
12096 static int nl80211_update_connect_params(struct sk_buff *skb,
12097                                          struct genl_info *info)
12098 {
12099         struct cfg80211_connect_params connect = {};
12100         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12101         struct net_device *dev = info->user_ptr[1];
12102         struct wireless_dev *wdev = dev->ieee80211_ptr;
12103         bool fils_sk_offload;
12104         u32 auth_type;
12105         u32 changed = 0;
12106
12107         if (!rdev->ops->update_connect_params)
12108                 return -EOPNOTSUPP;
12109
12110         if (info->attrs[NL80211_ATTR_IE]) {
12111                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12112                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12113                 changed |= UPDATE_ASSOC_IES;
12114         }
12115
12116         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
12117                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
12118
12119         /*
12120          * when driver supports fils-sk offload all attributes must be
12121          * provided. So the else covers "fils-sk-not-all" and
12122          * "no-fils-sk-any".
12123          */
12124         if (fils_sk_offload &&
12125             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
12126             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
12127             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
12128             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12129                 connect.fils_erp_username =
12130                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12131                 connect.fils_erp_username_len =
12132                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12133                 connect.fils_erp_realm =
12134                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12135                 connect.fils_erp_realm_len =
12136                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12137                 connect.fils_erp_next_seq_num =
12138                         nla_get_u16(
12139                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
12140                 connect.fils_erp_rrk =
12141                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12142                 connect.fils_erp_rrk_len =
12143                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12144                 changed |= UPDATE_FILS_ERP_INFO;
12145         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
12146                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
12147                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
12148                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12149                 return -EINVAL;
12150         }
12151
12152         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
12153                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
12154                 if (!nl80211_valid_auth_type(rdev, auth_type,
12155                                              NL80211_CMD_CONNECT))
12156                         return -EINVAL;
12157
12158                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
12159                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
12160                         return -EINVAL;
12161
12162                 connect.auth_type = auth_type;
12163                 changed |= UPDATE_AUTH_TYPE;
12164         }
12165
12166         if (!wdev->connected)
12167                 return -ENOLINK;
12168
12169         return rdev_update_connect_params(rdev, dev, &connect, changed);
12170 }
12171
12172 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
12173 {
12174         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12175         struct net_device *dev = info->user_ptr[1];
12176         u16 reason;
12177
12178         if (dev->ieee80211_ptr->conn_owner_nlportid &&
12179             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
12180                 return -EPERM;
12181
12182         if (!info->attrs[NL80211_ATTR_REASON_CODE])
12183                 reason = WLAN_REASON_DEAUTH_LEAVING;
12184         else
12185                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
12186
12187         if (reason == 0)
12188                 return -EINVAL;
12189
12190         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12191             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12192                 return -EOPNOTSUPP;
12193
12194         return cfg80211_disconnect(rdev, dev, reason, true);
12195 }
12196
12197 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
12198 {
12199         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12200         struct net *net;
12201         int err;
12202
12203         if (info->attrs[NL80211_ATTR_PID]) {
12204                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
12205
12206                 net = get_net_ns_by_pid(pid);
12207         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
12208                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
12209
12210                 net = get_net_ns_by_fd(fd);
12211         } else {
12212                 return -EINVAL;
12213         }
12214
12215         if (IS_ERR(net))
12216                 return PTR_ERR(net);
12217
12218         err = 0;
12219
12220         /* check if anything to do */
12221         if (!net_eq(wiphy_net(&rdev->wiphy), net))
12222                 err = cfg80211_switch_netns(rdev, net);
12223
12224         put_net(net);
12225         return err;
12226 }
12227
12228 static int nl80211_set_pmksa(struct sk_buff *skb, struct genl_info *info)
12229 {
12230         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12231         struct net_device *dev = info->user_ptr[1];
12232         struct cfg80211_pmksa pmksa;
12233         bool ap_pmksa_caching_support = false;
12234
12235         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
12236
12237         ap_pmksa_caching_support = wiphy_ext_feature_isset(&rdev->wiphy,
12238                 NL80211_EXT_FEATURE_AP_PMKSA_CACHING);
12239
12240         if (!info->attrs[NL80211_ATTR_PMKID])
12241                 return -EINVAL;
12242
12243         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
12244
12245         if (info->attrs[NL80211_ATTR_MAC]) {
12246                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
12247         } else if (info->attrs[NL80211_ATTR_SSID] &&
12248                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
12249                    info->attrs[NL80211_ATTR_PMK]) {
12250                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
12251                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12252                 pmksa.cache_id = nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
12253         } else {
12254                 return -EINVAL;
12255         }
12256
12257         if (info->attrs[NL80211_ATTR_PMK]) {
12258                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12259                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12260         }
12261
12262         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
12263                 pmksa.pmk_lifetime =
12264                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
12265
12266         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
12267                 pmksa.pmk_reauth_threshold =
12268                         nla_get_u8(info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
12269
12270         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12271             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
12272             !((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP ||
12273                dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO) &&
12274                ap_pmksa_caching_support))
12275                 return -EOPNOTSUPP;
12276
12277         if (!rdev->ops->set_pmksa)
12278                 return -EOPNOTSUPP;
12279
12280         return rdev_set_pmksa(rdev, dev, &pmksa);
12281 }
12282
12283 static int nl80211_del_pmksa(struct sk_buff *skb, struct genl_info *info)
12284 {
12285         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12286         struct net_device *dev = info->user_ptr[1];
12287         struct cfg80211_pmksa pmksa;
12288         bool sae_offload_support = false;
12289         bool owe_offload_support = false;
12290         bool ap_pmksa_caching_support = false;
12291
12292         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
12293
12294         sae_offload_support = wiphy_ext_feature_isset(&rdev->wiphy,
12295                 NL80211_EXT_FEATURE_SAE_OFFLOAD);
12296         owe_offload_support = wiphy_ext_feature_isset(&rdev->wiphy,
12297                 NL80211_EXT_FEATURE_OWE_OFFLOAD);
12298         ap_pmksa_caching_support = wiphy_ext_feature_isset(&rdev->wiphy,
12299                 NL80211_EXT_FEATURE_AP_PMKSA_CACHING);
12300
12301         if (info->attrs[NL80211_ATTR_PMKID])
12302                 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
12303
12304         if (info->attrs[NL80211_ATTR_MAC]) {
12305                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
12306         } else if (info->attrs[NL80211_ATTR_SSID]) {
12307                 /* SSID based pmksa flush suppported only for FILS,
12308                  * OWE/SAE OFFLOAD cases
12309                  */
12310                 if (info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
12311                     info->attrs[NL80211_ATTR_PMK]) {
12312                         pmksa.cache_id = nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
12313                 } else if (!sae_offload_support && !owe_offload_support) {
12314                         return -EINVAL;
12315                 }
12316                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
12317                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12318         } else {
12319                 return -EINVAL;
12320         }
12321
12322         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12323             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
12324             !((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP ||
12325                dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO) &&
12326                ap_pmksa_caching_support))
12327                 return -EOPNOTSUPP;
12328
12329         if (!rdev->ops->del_pmksa)
12330                 return -EOPNOTSUPP;
12331
12332         return rdev_del_pmksa(rdev, dev, &pmksa);
12333 }
12334
12335 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
12336 {
12337         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12338         struct net_device *dev = info->user_ptr[1];
12339
12340         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12341             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12342                 return -EOPNOTSUPP;
12343
12344         if (!rdev->ops->flush_pmksa)
12345                 return -EOPNOTSUPP;
12346
12347         return rdev_flush_pmksa(rdev, dev);
12348 }
12349
12350 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
12351 {
12352         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12353         struct net_device *dev = info->user_ptr[1];
12354         u8 action_code, dialog_token;
12355         u32 peer_capability = 0;
12356         u16 status_code;
12357         u8 *peer;
12358         int link_id;
12359         bool initiator;
12360
12361         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12362             !rdev->ops->tdls_mgmt)
12363                 return -EOPNOTSUPP;
12364
12365         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
12366             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
12367             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
12368             !info->attrs[NL80211_ATTR_IE] ||
12369             !info->attrs[NL80211_ATTR_MAC])
12370                 return -EINVAL;
12371
12372         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12373         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
12374         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12375         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
12376         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
12377         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
12378                 peer_capability =
12379                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
12380         link_id = nl80211_link_id_or_invalid(info->attrs);
12381
12382         return rdev_tdls_mgmt(rdev, dev, peer, link_id, action_code,
12383                               dialog_token, status_code, peer_capability,
12384                               initiator,
12385                               nla_data(info->attrs[NL80211_ATTR_IE]),
12386                               nla_len(info->attrs[NL80211_ATTR_IE]));
12387 }
12388
12389 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
12390 {
12391         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12392         struct net_device *dev = info->user_ptr[1];
12393         enum nl80211_tdls_operation operation;
12394         u8 *peer;
12395
12396         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12397             !rdev->ops->tdls_oper)
12398                 return -EOPNOTSUPP;
12399
12400         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
12401             !info->attrs[NL80211_ATTR_MAC])
12402                 return -EINVAL;
12403
12404         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
12405         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12406
12407         return rdev_tdls_oper(rdev, dev, peer, operation);
12408 }
12409
12410 static int nl80211_remain_on_channel(struct sk_buff *skb,
12411                                      struct genl_info *info)
12412 {
12413         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12414         unsigned int link_id = nl80211_link_id(info->attrs);
12415         struct wireless_dev *wdev = info->user_ptr[1];
12416         struct cfg80211_chan_def chandef;
12417         struct sk_buff *msg;
12418         void *hdr;
12419         u64 cookie;
12420         u32 duration;
12421         int err;
12422
12423         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
12424             !info->attrs[NL80211_ATTR_DURATION])
12425                 return -EINVAL;
12426
12427         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12428
12429         if (!rdev->ops->remain_on_channel ||
12430             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
12431                 return -EOPNOTSUPP;
12432
12433         /*
12434          * We should be on that channel for at least a minimum amount of
12435          * time (10ms) but no longer than the driver supports.
12436          */
12437         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12438             duration > rdev->wiphy.max_remain_on_channel_duration)
12439                 return -EINVAL;
12440
12441         err = nl80211_parse_chandef(rdev, info, &chandef);
12442         if (err)
12443                 return err;
12444
12445         if (!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12446                 const struct cfg80211_chan_def *oper_chandef, *compat_chandef;
12447
12448                 oper_chandef = wdev_chandef(wdev, link_id);
12449
12450                 if (WARN_ON(!oper_chandef)) {
12451                         /* cannot happen since we must beacon to get here */
12452                         WARN_ON(1);
12453                         return -EBUSY;
12454                 }
12455
12456                 /* note: returns first one if identical chandefs */
12457                 compat_chandef = cfg80211_chandef_compatible(&chandef,
12458                                                              oper_chandef);
12459
12460                 if (compat_chandef != &chandef)
12461                         return -EBUSY;
12462         }
12463
12464         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12465         if (!msg)
12466                 return -ENOMEM;
12467
12468         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12469                              NL80211_CMD_REMAIN_ON_CHANNEL);
12470         if (!hdr) {
12471                 err = -ENOBUFS;
12472                 goto free_msg;
12473         }
12474
12475         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
12476                                      duration, &cookie);
12477
12478         if (err)
12479                 goto free_msg;
12480
12481         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12482                               NL80211_ATTR_PAD))
12483                 goto nla_put_failure;
12484
12485         genlmsg_end(msg, hdr);
12486
12487         return genlmsg_reply(msg, info);
12488
12489  nla_put_failure:
12490         err = -ENOBUFS;
12491  free_msg:
12492         nlmsg_free(msg);
12493         return err;
12494 }
12495
12496 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
12497                                             struct genl_info *info)
12498 {
12499         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12500         struct wireless_dev *wdev = info->user_ptr[1];
12501         u64 cookie;
12502
12503         if (!info->attrs[NL80211_ATTR_COOKIE])
12504                 return -EINVAL;
12505
12506         if (!rdev->ops->cancel_remain_on_channel)
12507                 return -EOPNOTSUPP;
12508
12509         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12510
12511         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
12512 }
12513
12514 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
12515                                        struct genl_info *info)
12516 {
12517         struct cfg80211_bitrate_mask mask;
12518         unsigned int link_id = nl80211_link_id(info->attrs);
12519         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12520         struct net_device *dev = info->user_ptr[1];
12521         int err;
12522
12523         if (!rdev->ops->set_bitrate_mask)
12524                 return -EOPNOTSUPP;
12525
12526         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12527                                             NL80211_ATTR_TX_RATES, &mask,
12528                                             dev, true, link_id);
12529         if (err)
12530                 return err;
12531
12532         return rdev_set_bitrate_mask(rdev, dev, link_id, NULL, &mask);
12533 }
12534
12535 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
12536 {
12537         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12538         struct wireless_dev *wdev = info->user_ptr[1];
12539         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
12540
12541         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
12542                 return -EINVAL;
12543
12544         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
12545                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
12546
12547         switch (wdev->iftype) {
12548         case NL80211_IFTYPE_STATION:
12549         case NL80211_IFTYPE_ADHOC:
12550         case NL80211_IFTYPE_P2P_CLIENT:
12551         case NL80211_IFTYPE_AP:
12552         case NL80211_IFTYPE_AP_VLAN:
12553         case NL80211_IFTYPE_MESH_POINT:
12554         case NL80211_IFTYPE_P2P_GO:
12555         case NL80211_IFTYPE_P2P_DEVICE:
12556                 break;
12557         case NL80211_IFTYPE_NAN:
12558                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12559                                              NL80211_EXT_FEATURE_SECURE_NAN))
12560                         return -EOPNOTSUPP;
12561                 break;
12562         default:
12563                 return -EOPNOTSUPP;
12564         }
12565
12566         /* not much point in registering if we can't reply */
12567         if (!rdev->ops->mgmt_tx)
12568                 return -EOPNOTSUPP;
12569
12570         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
12571             !wiphy_ext_feature_isset(&rdev->wiphy,
12572                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
12573                 GENL_SET_ERR_MSG(info,
12574                                  "multicast RX registrations are not supported");
12575                 return -EOPNOTSUPP;
12576         }
12577
12578         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
12579                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12580                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12581                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
12582                                            info->extack);
12583 }
12584
12585 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
12586 {
12587         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12588         struct wireless_dev *wdev = info->user_ptr[1];
12589         struct cfg80211_chan_def chandef;
12590         int err;
12591         void *hdr = NULL;
12592         u64 cookie;
12593         struct sk_buff *msg = NULL;
12594         struct cfg80211_mgmt_tx_params params = {
12595                 .dont_wait_for_ack =
12596                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
12597         };
12598
12599         if (!info->attrs[NL80211_ATTR_FRAME])
12600                 return -EINVAL;
12601
12602         if (!rdev->ops->mgmt_tx)
12603                 return -EOPNOTSUPP;
12604
12605         switch (wdev->iftype) {
12606         case NL80211_IFTYPE_P2P_DEVICE:
12607                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
12608                         return -EINVAL;
12609                 break;
12610         case NL80211_IFTYPE_STATION:
12611         case NL80211_IFTYPE_ADHOC:
12612         case NL80211_IFTYPE_P2P_CLIENT:
12613         case NL80211_IFTYPE_AP:
12614         case NL80211_IFTYPE_AP_VLAN:
12615         case NL80211_IFTYPE_MESH_POINT:
12616         case NL80211_IFTYPE_P2P_GO:
12617                 break;
12618         case NL80211_IFTYPE_NAN:
12619                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12620                                              NL80211_EXT_FEATURE_SECURE_NAN))
12621                         return -EOPNOTSUPP;
12622                 break;
12623         default:
12624                 return -EOPNOTSUPP;
12625         }
12626
12627         if (info->attrs[NL80211_ATTR_DURATION]) {
12628                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12629                         return -EINVAL;
12630                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12631
12632                 /*
12633                  * We should wait on the channel for at least a minimum amount
12634                  * of time (10ms) but no longer than the driver supports.
12635                  */
12636                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12637                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
12638                         return -EINVAL;
12639         }
12640
12641         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
12642
12643         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12644                 return -EINVAL;
12645
12646         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
12647
12648         /* get the channel if any has been specified, otherwise pass NULL to
12649          * the driver. The latter will use the current one
12650          */
12651         chandef.chan = NULL;
12652         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12653                 err = nl80211_parse_chandef(rdev, info, &chandef);
12654                 if (err)
12655                         return err;
12656         }
12657
12658         if (!chandef.chan && params.offchan)
12659                 return -EINVAL;
12660
12661         if (params.offchan &&
12662             !cfg80211_off_channel_oper_allowed(wdev, chandef.chan))
12663                 return -EBUSY;
12664
12665         params.link_id = nl80211_link_id_or_invalid(info->attrs);
12666         /*
12667          * This now races due to the unlock, but we cannot check
12668          * the valid links for the _station_ anyway, so that's up
12669          * to the driver.
12670          */
12671         if (params.link_id >= 0 &&
12672             !(wdev->valid_links & BIT(params.link_id)))
12673                 return -EINVAL;
12674
12675         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12676         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12677
12678         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
12679                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12680                 int i;
12681
12682                 if (len % sizeof(u16))
12683                         return -EINVAL;
12684
12685                 params.n_csa_offsets = len / sizeof(u16);
12686                 params.csa_offsets =
12687                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12688
12689                 /* check that all the offsets fit the frame */
12690                 for (i = 0; i < params.n_csa_offsets; i++) {
12691                         if (params.csa_offsets[i] >= params.len)
12692                                 return -EINVAL;
12693                 }
12694         }
12695
12696         if (!params.dont_wait_for_ack) {
12697                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12698                 if (!msg)
12699                         return -ENOMEM;
12700
12701                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12702                                      NL80211_CMD_FRAME);
12703                 if (!hdr) {
12704                         err = -ENOBUFS;
12705                         goto free_msg;
12706                 }
12707         }
12708
12709         params.chan = chandef.chan;
12710         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
12711         if (err)
12712                 goto free_msg;
12713
12714         if (msg) {
12715                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12716                                       NL80211_ATTR_PAD))
12717                         goto nla_put_failure;
12718
12719                 genlmsg_end(msg, hdr);
12720                 return genlmsg_reply(msg, info);
12721         }
12722
12723         return 0;
12724
12725  nla_put_failure:
12726         err = -ENOBUFS;
12727  free_msg:
12728         nlmsg_free(msg);
12729         return err;
12730 }
12731
12732 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
12733 {
12734         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12735         struct wireless_dev *wdev = info->user_ptr[1];
12736         u64 cookie;
12737
12738         if (!info->attrs[NL80211_ATTR_COOKIE])
12739                 return -EINVAL;
12740
12741         if (!rdev->ops->mgmt_tx_cancel_wait)
12742                 return -EOPNOTSUPP;
12743
12744         switch (wdev->iftype) {
12745         case NL80211_IFTYPE_STATION:
12746         case NL80211_IFTYPE_ADHOC:
12747         case NL80211_IFTYPE_P2P_CLIENT:
12748         case NL80211_IFTYPE_AP:
12749         case NL80211_IFTYPE_AP_VLAN:
12750         case NL80211_IFTYPE_P2P_GO:
12751         case NL80211_IFTYPE_P2P_DEVICE:
12752                 break;
12753         case NL80211_IFTYPE_NAN:
12754                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12755                                              NL80211_EXT_FEATURE_SECURE_NAN))
12756                         return -EOPNOTSUPP;
12757                 break;
12758         default:
12759                 return -EOPNOTSUPP;
12760         }
12761
12762         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12763
12764         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
12765 }
12766
12767 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
12768 {
12769         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12770         struct wireless_dev *wdev;
12771         struct net_device *dev = info->user_ptr[1];
12772         u8 ps_state;
12773         bool state;
12774         int err;
12775
12776         if (!info->attrs[NL80211_ATTR_PS_STATE])
12777                 return -EINVAL;
12778
12779         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
12780
12781         wdev = dev->ieee80211_ptr;
12782
12783         if (!rdev->ops->set_power_mgmt)
12784                 return -EOPNOTSUPP;
12785
12786         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
12787
12788         if (state == wdev->ps)
12789                 return 0;
12790
12791         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
12792         if (!err)
12793                 wdev->ps = state;
12794         return err;
12795 }
12796
12797 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
12798 {
12799         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12800         enum nl80211_ps_state ps_state;
12801         struct wireless_dev *wdev;
12802         struct net_device *dev = info->user_ptr[1];
12803         struct sk_buff *msg;
12804         void *hdr;
12805         int err;
12806
12807         wdev = dev->ieee80211_ptr;
12808
12809         if (!rdev->ops->set_power_mgmt)
12810                 return -EOPNOTSUPP;
12811
12812         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12813         if (!msg)
12814                 return -ENOMEM;
12815
12816         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12817                              NL80211_CMD_GET_POWER_SAVE);
12818         if (!hdr) {
12819                 err = -ENOBUFS;
12820                 goto free_msg;
12821         }
12822
12823         if (wdev->ps)
12824                 ps_state = NL80211_PS_ENABLED;
12825         else
12826                 ps_state = NL80211_PS_DISABLED;
12827
12828         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
12829                 goto nla_put_failure;
12830
12831         genlmsg_end(msg, hdr);
12832         return genlmsg_reply(msg, info);
12833
12834  nla_put_failure:
12835         err = -ENOBUFS;
12836  free_msg:
12837         nlmsg_free(msg);
12838         return err;
12839 }
12840
12841 static const struct nla_policy
12842 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
12843         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
12844         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
12845         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
12846         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
12847         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
12848         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
12849         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
12850 };
12851
12852 static int nl80211_set_cqm_txe(struct genl_info *info,
12853                                u32 rate, u32 pkts, u32 intvl)
12854 {
12855         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12856         struct net_device *dev = info->user_ptr[1];
12857         struct wireless_dev *wdev = dev->ieee80211_ptr;
12858
12859         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
12860                 return -EINVAL;
12861
12862         if (!rdev->ops->set_cqm_txe_config)
12863                 return -EOPNOTSUPP;
12864
12865         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12866             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12867                 return -EOPNOTSUPP;
12868
12869         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
12870 }
12871
12872 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
12873                                     struct net_device *dev,
12874                                     struct cfg80211_cqm_config *cqm_config)
12875 {
12876         struct wireless_dev *wdev = dev->ieee80211_ptr;
12877         s32 last, low, high;
12878         u32 hyst;
12879         int i, n, low_index;
12880         int err;
12881
12882         /*
12883          * Obtain current RSSI value if possible, if not and no RSSI threshold
12884          * event has been received yet, we should receive an event after a
12885          * connection is established and enough beacons received to calculate
12886          * the average.
12887          */
12888         if (!cqm_config->last_rssi_event_value &&
12889             wdev->links[0].client.current_bss &&
12890             rdev->ops->get_station) {
12891                 struct station_info sinfo = {};
12892                 u8 *mac_addr;
12893
12894                 mac_addr = wdev->links[0].client.current_bss->pub.bssid;
12895
12896                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
12897                 if (err)
12898                         return err;
12899
12900                 cfg80211_sinfo_release_content(&sinfo);
12901                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
12902                         cqm_config->last_rssi_event_value =
12903                                 (s8) sinfo.rx_beacon_signal_avg;
12904         }
12905
12906         last = cqm_config->last_rssi_event_value;
12907         hyst = cqm_config->rssi_hyst;
12908         n = cqm_config->n_rssi_thresholds;
12909
12910         for (i = 0; i < n; i++) {
12911                 i = array_index_nospec(i, n);
12912                 if (last < cqm_config->rssi_thresholds[i])
12913                         break;
12914         }
12915
12916         low_index = i - 1;
12917         if (low_index >= 0) {
12918                 low_index = array_index_nospec(low_index, n);
12919                 low = cqm_config->rssi_thresholds[low_index] - hyst;
12920         } else {
12921                 low = S32_MIN;
12922         }
12923         if (i < n) {
12924                 i = array_index_nospec(i, n);
12925                 high = cqm_config->rssi_thresholds[i] + hyst - 1;
12926         } else {
12927                 high = S32_MAX;
12928         }
12929
12930         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
12931 }
12932
12933 static int nl80211_set_cqm_rssi(struct genl_info *info,
12934                                 const s32 *thresholds, int n_thresholds,
12935                                 u32 hysteresis)
12936 {
12937         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12938         struct cfg80211_cqm_config *cqm_config = NULL, *old;
12939         struct net_device *dev = info->user_ptr[1];
12940         struct wireless_dev *wdev = dev->ieee80211_ptr;
12941         s32 prev = S32_MIN;
12942         int i, err;
12943
12944         /* Check all values negative and sorted */
12945         for (i = 0; i < n_thresholds; i++) {
12946                 if (thresholds[i] > 0 || thresholds[i] <= prev)
12947                         return -EINVAL;
12948
12949                 prev = thresholds[i];
12950         }
12951
12952         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12953             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12954                 return -EOPNOTSUPP;
12955
12956         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
12957                 n_thresholds = 0;
12958
12959         old = wiphy_dereference(wdev->wiphy, wdev->cqm_config);
12960
12961         /* if already disabled just succeed */
12962         if (!n_thresholds && !old)
12963                 return 0;
12964
12965         if (n_thresholds > 1) {
12966                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12967                                              NL80211_EXT_FEATURE_CQM_RSSI_LIST) ||
12968                     !rdev->ops->set_cqm_rssi_range_config)
12969                         return -EOPNOTSUPP;
12970         } else {
12971                 if (!rdev->ops->set_cqm_rssi_config)
12972                         return -EOPNOTSUPP;
12973         }
12974
12975         if (n_thresholds) {
12976                 cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
12977                                                  n_thresholds),
12978                                      GFP_KERNEL);
12979                 if (!cqm_config)
12980                         return -ENOMEM;
12981
12982                 cqm_config->rssi_hyst = hysteresis;
12983                 cqm_config->n_rssi_thresholds = n_thresholds;
12984                 memcpy(cqm_config->rssi_thresholds, thresholds,
12985                        flex_array_size(cqm_config, rssi_thresholds,
12986                                        n_thresholds));
12987                 cqm_config->use_range_api = n_thresholds > 1 ||
12988                                             !rdev->ops->set_cqm_rssi_config;
12989
12990                 rcu_assign_pointer(wdev->cqm_config, cqm_config);
12991
12992                 if (cqm_config->use_range_api)
12993                         err = cfg80211_cqm_rssi_update(rdev, dev, cqm_config);
12994                 else
12995                         err = rdev_set_cqm_rssi_config(rdev, dev,
12996                                                        thresholds[0],
12997                                                        hysteresis);
12998         } else {
12999                 RCU_INIT_POINTER(wdev->cqm_config, NULL);
13000                 /* if enabled as range also disable via range */
13001                 if (old->use_range_api)
13002                         err = rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
13003                 else
13004                         err = rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
13005         }
13006
13007         if (err) {
13008                 rcu_assign_pointer(wdev->cqm_config, old);
13009                 kfree_rcu(cqm_config, rcu_head);
13010         } else {
13011                 kfree_rcu(old, rcu_head);
13012         }
13013
13014         return err;
13015 }
13016
13017 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
13018 {
13019         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
13020         struct nlattr *cqm;
13021         int err;
13022
13023         cqm = info->attrs[NL80211_ATTR_CQM];
13024         if (!cqm)
13025                 return -EINVAL;
13026
13027         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
13028                                           nl80211_attr_cqm_policy,
13029                                           info->extack);
13030         if (err)
13031                 return err;
13032
13033         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
13034             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
13035                 const s32 *thresholds =
13036                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
13037                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
13038                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
13039
13040                 if (len % 4)
13041                         return -EINVAL;
13042
13043                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
13044                                             hysteresis);
13045         }
13046
13047         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
13048             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
13049             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
13050                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
13051                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
13052                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
13053
13054                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
13055         }
13056
13057         return -EINVAL;
13058 }
13059
13060 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
13061 {
13062         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13063         struct net_device *dev = info->user_ptr[1];
13064         struct ocb_setup setup = {};
13065         int err;
13066
13067         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
13068         if (err)
13069                 return err;
13070
13071         return cfg80211_join_ocb(rdev, dev, &setup);
13072 }
13073
13074 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
13075 {
13076         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13077         struct net_device *dev = info->user_ptr[1];
13078
13079         return cfg80211_leave_ocb(rdev, dev);
13080 }
13081
13082 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
13083 {
13084         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13085         struct net_device *dev = info->user_ptr[1];
13086         struct mesh_config cfg;
13087         struct mesh_setup setup;
13088         int err;
13089
13090         /* start with default */
13091         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
13092         memcpy(&setup, &default_mesh_setup, sizeof(setup));
13093
13094         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
13095                 /* and parse parameters if given */
13096                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
13097                 if (err)
13098                         return err;
13099         }
13100
13101         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
13102             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
13103                 return -EINVAL;
13104
13105         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
13106         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
13107
13108         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
13109             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
13110                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
13111                         return -EINVAL;
13112
13113         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
13114                 setup.beacon_interval =
13115                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
13116
13117                 err = cfg80211_validate_beacon_int(rdev,
13118                                                    NL80211_IFTYPE_MESH_POINT,
13119                                                    setup.beacon_interval);
13120                 if (err)
13121                         return err;
13122         }
13123
13124         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
13125                 setup.dtim_period =
13126                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
13127                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
13128                         return -EINVAL;
13129         }
13130
13131         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
13132                 /* parse additional setup parameters if given */
13133                 err = nl80211_parse_mesh_setup(info, &setup);
13134                 if (err)
13135                         return err;
13136         }
13137
13138         if (setup.user_mpm)
13139                 cfg.auto_open_plinks = false;
13140
13141         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
13142                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
13143                 if (err)
13144                         return err;
13145         } else {
13146                 /* __cfg80211_join_mesh() will sort it out */
13147                 setup.chandef.chan = NULL;
13148         }
13149
13150         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
13151                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
13152                 int n_rates =
13153                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
13154                 struct ieee80211_supported_band *sband;
13155
13156                 if (!setup.chandef.chan)
13157                         return -EINVAL;
13158
13159                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
13160
13161                 err = ieee80211_get_ratemask(sband, rates, n_rates,
13162                                              &setup.basic_rates);
13163                 if (err)
13164                         return err;
13165         }
13166
13167         if (info->attrs[NL80211_ATTR_TX_RATES]) {
13168                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
13169                                                     NL80211_ATTR_TX_RATES,
13170                                                     &setup.beacon_rate,
13171                                                     dev, false, 0);
13172                 if (err)
13173                         return err;
13174
13175                 if (!setup.chandef.chan)
13176                         return -EINVAL;
13177
13178                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
13179                                               &setup.beacon_rate);
13180                 if (err)
13181                         return err;
13182         }
13183
13184         setup.userspace_handles_dfs =
13185                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
13186
13187         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
13188                 int r = validate_pae_over_nl80211(rdev, info);
13189
13190                 if (r < 0)
13191                         return r;
13192
13193                 setup.control_port_over_nl80211 = true;
13194         }
13195
13196         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
13197         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
13198                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
13199
13200         return err;
13201 }
13202
13203 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
13204 {
13205         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13206         struct net_device *dev = info->user_ptr[1];
13207
13208         return cfg80211_leave_mesh(rdev, dev);
13209 }
13210
13211 #ifdef CONFIG_PM
13212 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
13213                                         struct cfg80211_registered_device *rdev)
13214 {
13215         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
13216         struct nlattr *nl_pats, *nl_pat;
13217         int i, pat_len;
13218
13219         if (!wowlan->n_patterns)
13220                 return 0;
13221
13222         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
13223         if (!nl_pats)
13224                 return -ENOBUFS;
13225
13226         for (i = 0; i < wowlan->n_patterns; i++) {
13227                 nl_pat = nla_nest_start_noflag(msg, i + 1);
13228                 if (!nl_pat)
13229                         return -ENOBUFS;
13230                 pat_len = wowlan->patterns[i].pattern_len;
13231                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
13232                             wowlan->patterns[i].mask) ||
13233                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13234                             wowlan->patterns[i].pattern) ||
13235                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13236                                 wowlan->patterns[i].pkt_offset))
13237                         return -ENOBUFS;
13238                 nla_nest_end(msg, nl_pat);
13239         }
13240         nla_nest_end(msg, nl_pats);
13241
13242         return 0;
13243 }
13244
13245 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
13246                                    struct cfg80211_wowlan_tcp *tcp)
13247 {
13248         struct nlattr *nl_tcp;
13249
13250         if (!tcp)
13251                 return 0;
13252
13253         nl_tcp = nla_nest_start_noflag(msg,
13254                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
13255         if (!nl_tcp)
13256                 return -ENOBUFS;
13257
13258         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
13259             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
13260             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
13261             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
13262             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
13263             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
13264                     tcp->payload_len, tcp->payload) ||
13265             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
13266                         tcp->data_interval) ||
13267             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
13268                     tcp->wake_len, tcp->wake_data) ||
13269             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
13270                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
13271                 return -ENOBUFS;
13272
13273         if (tcp->payload_seq.len &&
13274             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
13275                     sizeof(tcp->payload_seq), &tcp->payload_seq))
13276                 return -ENOBUFS;
13277
13278         if (tcp->payload_tok.len &&
13279             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
13280                     sizeof(tcp->payload_tok) + tcp->tokens_size,
13281                     &tcp->payload_tok))
13282                 return -ENOBUFS;
13283
13284         nla_nest_end(msg, nl_tcp);
13285
13286         return 0;
13287 }
13288
13289 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
13290                                   struct cfg80211_sched_scan_request *req)
13291 {
13292         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
13293         int i;
13294
13295         if (!req)
13296                 return 0;
13297
13298         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
13299         if (!nd)
13300                 return -ENOBUFS;
13301
13302         if (req->n_scan_plans == 1 &&
13303             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
13304                         req->scan_plans[0].interval * 1000))
13305                 return -ENOBUFS;
13306
13307         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
13308                 return -ENOBUFS;
13309
13310         if (req->relative_rssi_set) {
13311                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
13312
13313                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
13314                                req->relative_rssi))
13315                         return -ENOBUFS;
13316
13317                 rssi_adjust.band = req->rssi_adjust.band;
13318                 rssi_adjust.delta = req->rssi_adjust.delta;
13319                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
13320                             sizeof(rssi_adjust), &rssi_adjust))
13321                         return -ENOBUFS;
13322         }
13323
13324         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13325         if (!freqs)
13326                 return -ENOBUFS;
13327
13328         for (i = 0; i < req->n_channels; i++) {
13329                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13330                         return -ENOBUFS;
13331         }
13332
13333         nla_nest_end(msg, freqs);
13334
13335         if (req->n_match_sets) {
13336                 matches = nla_nest_start_noflag(msg,
13337                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
13338                 if (!matches)
13339                         return -ENOBUFS;
13340
13341                 for (i = 0; i < req->n_match_sets; i++) {
13342                         match = nla_nest_start_noflag(msg, i);
13343                         if (!match)
13344                                 return -ENOBUFS;
13345
13346                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
13347                                     req->match_sets[i].ssid.ssid_len,
13348                                     req->match_sets[i].ssid.ssid))
13349                                 return -ENOBUFS;
13350                         nla_nest_end(msg, match);
13351                 }
13352                 nla_nest_end(msg, matches);
13353         }
13354
13355         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
13356         if (!scan_plans)
13357                 return -ENOBUFS;
13358
13359         for (i = 0; i < req->n_scan_plans; i++) {
13360                 scan_plan = nla_nest_start_noflag(msg, i + 1);
13361                 if (!scan_plan)
13362                         return -ENOBUFS;
13363
13364                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
13365                                 req->scan_plans[i].interval) ||
13366                     (req->scan_plans[i].iterations &&
13367                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
13368                                  req->scan_plans[i].iterations)))
13369                         return -ENOBUFS;
13370                 nla_nest_end(msg, scan_plan);
13371         }
13372         nla_nest_end(msg, scan_plans);
13373
13374         nla_nest_end(msg, nd);
13375
13376         return 0;
13377 }
13378
13379 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
13380 {
13381         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13382         struct sk_buff *msg;
13383         void *hdr;
13384         u32 size = NLMSG_DEFAULT_SIZE;
13385
13386         if (!rdev->wiphy.wowlan)
13387                 return -EOPNOTSUPP;
13388
13389         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
13390                 /* adjust size to have room for all the data */
13391                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
13392                         rdev->wiphy.wowlan_config->tcp->payload_len +
13393                         rdev->wiphy.wowlan_config->tcp->wake_len +
13394                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
13395         }
13396
13397         msg = nlmsg_new(size, GFP_KERNEL);
13398         if (!msg)
13399                 return -ENOMEM;
13400
13401         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13402                              NL80211_CMD_GET_WOWLAN);
13403         if (!hdr)
13404                 goto nla_put_failure;
13405
13406         if (rdev->wiphy.wowlan_config) {
13407                 struct nlattr *nl_wowlan;
13408
13409                 nl_wowlan = nla_nest_start_noflag(msg,
13410                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
13411                 if (!nl_wowlan)
13412                         goto nla_put_failure;
13413
13414                 if ((rdev->wiphy.wowlan_config->any &&
13415                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
13416                     (rdev->wiphy.wowlan_config->disconnect &&
13417                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
13418                     (rdev->wiphy.wowlan_config->magic_pkt &&
13419                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
13420                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
13421                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
13422                     (rdev->wiphy.wowlan_config->eap_identity_req &&
13423                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
13424                     (rdev->wiphy.wowlan_config->four_way_handshake &&
13425                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
13426                     (rdev->wiphy.wowlan_config->rfkill_release &&
13427                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
13428                         goto nla_put_failure;
13429
13430                 if (nl80211_send_wowlan_patterns(msg, rdev))
13431                         goto nla_put_failure;
13432
13433                 if (nl80211_send_wowlan_tcp(msg,
13434                                             rdev->wiphy.wowlan_config->tcp))
13435                         goto nla_put_failure;
13436
13437                 if (nl80211_send_wowlan_nd(
13438                             msg,
13439                             rdev->wiphy.wowlan_config->nd_config))
13440                         goto nla_put_failure;
13441
13442                 nla_nest_end(msg, nl_wowlan);
13443         }
13444
13445         genlmsg_end(msg, hdr);
13446         return genlmsg_reply(msg, info);
13447
13448 nla_put_failure:
13449         nlmsg_free(msg);
13450         return -ENOBUFS;
13451 }
13452
13453 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
13454                                     struct nlattr *attr,
13455                                     struct cfg80211_wowlan *trig)
13456 {
13457         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
13458         struct cfg80211_wowlan_tcp *cfg;
13459         struct nl80211_wowlan_tcp_data_token *tok = NULL;
13460         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
13461         u32 size;
13462         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
13463         int err, port;
13464
13465         if (!rdev->wiphy.wowlan->tcp)
13466                 return -EINVAL;
13467
13468         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
13469                                           nl80211_wowlan_tcp_policy, NULL);
13470         if (err)
13471                 return err;
13472
13473         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
13474             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
13475             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
13476             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
13477             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
13478             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
13479             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
13480             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
13481                 return -EINVAL;
13482
13483         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
13484         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
13485                 return -EINVAL;
13486
13487         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
13488                         rdev->wiphy.wowlan->tcp->data_interval_max ||
13489             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
13490                 return -EINVAL;
13491
13492         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
13493         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
13494                 return -EINVAL;
13495
13496         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
13497         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
13498                 return -EINVAL;
13499
13500         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
13501                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13502
13503                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13504                 tokens_size = tokln - sizeof(*tok);
13505
13506                 if (!tok->len || tokens_size % tok->len)
13507                         return -EINVAL;
13508                 if (!rdev->wiphy.wowlan->tcp->tok)
13509                         return -EINVAL;
13510                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
13511                         return -EINVAL;
13512                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
13513                         return -EINVAL;
13514                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
13515                         return -EINVAL;
13516                 if (tok->offset + tok->len > data_size)
13517                         return -EINVAL;
13518         }
13519
13520         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
13521                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
13522                 if (!rdev->wiphy.wowlan->tcp->seq)
13523                         return -EINVAL;
13524                 if (seq->len == 0 || seq->len > 4)
13525                         return -EINVAL;
13526                 if (seq->len + seq->offset > data_size)
13527                         return -EINVAL;
13528         }
13529
13530         size = sizeof(*cfg);
13531         size += data_size;
13532         size += wake_size + wake_mask_size;
13533         size += tokens_size;
13534
13535         cfg = kzalloc(size, GFP_KERNEL);
13536         if (!cfg)
13537                 return -ENOMEM;
13538         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
13539         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
13540         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
13541                ETH_ALEN);
13542         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
13543                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
13544         else
13545                 port = 0;
13546 #ifdef CONFIG_INET
13547         /* allocate a socket and port for it and use it */
13548         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
13549                             IPPROTO_TCP, &cfg->sock, 1);
13550         if (err) {
13551                 kfree(cfg);
13552                 return err;
13553         }
13554         if (inet_csk_get_port(cfg->sock->sk, port)) {
13555                 sock_release(cfg->sock);
13556                 kfree(cfg);
13557                 return -EADDRINUSE;
13558         }
13559         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
13560 #else
13561         if (!port) {
13562                 kfree(cfg);
13563                 return -EINVAL;
13564         }
13565         cfg->src_port = port;
13566 #endif
13567
13568         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
13569         cfg->payload_len = data_size;
13570         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
13571         memcpy((void *)cfg->payload,
13572                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
13573                data_size);
13574         if (seq)
13575                 cfg->payload_seq = *seq;
13576         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
13577         cfg->wake_len = wake_size;
13578         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
13579         memcpy((void *)cfg->wake_data,
13580                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
13581                wake_size);
13582         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
13583                          data_size + wake_size;
13584         memcpy((void *)cfg->wake_mask,
13585                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
13586                wake_mask_size);
13587         if (tok) {
13588                 cfg->tokens_size = tokens_size;
13589                 cfg->payload_tok = *tok;
13590                 memcpy(cfg->payload_tok.token_stream, tok->token_stream,
13591                        tokens_size);
13592         }
13593
13594         trig->tcp = cfg;
13595
13596         return 0;
13597 }
13598
13599 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
13600                                    const struct wiphy_wowlan_support *wowlan,
13601                                    struct nlattr *attr,
13602                                    struct cfg80211_wowlan *trig)
13603 {
13604         struct nlattr **tb;
13605         int err;
13606
13607         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
13608         if (!tb)
13609                 return -ENOMEM;
13610
13611         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
13612                 err = -EOPNOTSUPP;
13613                 goto out;
13614         }
13615
13616         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
13617                                           nl80211_policy, NULL);
13618         if (err)
13619                 goto out;
13620
13621         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
13622                                                    wowlan->max_nd_match_sets);
13623         err = PTR_ERR_OR_ZERO(trig->nd_config);
13624         if (err)
13625                 trig->nd_config = NULL;
13626
13627 out:
13628         kfree(tb);
13629         return err;
13630 }
13631
13632 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
13633 {
13634         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13635         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
13636         struct cfg80211_wowlan new_triggers = {};
13637         struct cfg80211_wowlan *ntrig;
13638         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
13639         int err, i;
13640         bool prev_enabled = rdev->wiphy.wowlan_config;
13641         bool regular = false;
13642
13643         if (!wowlan)
13644                 return -EOPNOTSUPP;
13645
13646         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
13647                 cfg80211_rdev_free_wowlan(rdev);
13648                 rdev->wiphy.wowlan_config = NULL;
13649                 goto set_wakeup;
13650         }
13651
13652         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
13653                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
13654                                           nl80211_wowlan_policy, info->extack);
13655         if (err)
13656                 return err;
13657
13658         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
13659                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
13660                         return -EINVAL;
13661                 new_triggers.any = true;
13662         }
13663
13664         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
13665                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
13666                         return -EINVAL;
13667                 new_triggers.disconnect = true;
13668                 regular = true;
13669         }
13670
13671         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
13672                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
13673                         return -EINVAL;
13674                 new_triggers.magic_pkt = true;
13675                 regular = true;
13676         }
13677
13678         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
13679                 return -EINVAL;
13680
13681         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
13682                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
13683                         return -EINVAL;
13684                 new_triggers.gtk_rekey_failure = true;
13685                 regular = true;
13686         }
13687
13688         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
13689                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
13690                         return -EINVAL;
13691                 new_triggers.eap_identity_req = true;
13692                 regular = true;
13693         }
13694
13695         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
13696                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
13697                         return -EINVAL;
13698                 new_triggers.four_way_handshake = true;
13699                 regular = true;
13700         }
13701
13702         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
13703                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
13704                         return -EINVAL;
13705                 new_triggers.rfkill_release = true;
13706                 regular = true;
13707         }
13708
13709         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
13710                 struct nlattr *pat;
13711                 int n_patterns = 0;
13712                 int rem, pat_len, mask_len, pkt_offset;
13713                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13714
13715                 regular = true;
13716
13717                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13718                                     rem)
13719                         n_patterns++;
13720                 if (n_patterns > wowlan->n_patterns)
13721                         return -EINVAL;
13722
13723                 new_triggers.patterns = kcalloc(n_patterns,
13724                                                 sizeof(new_triggers.patterns[0]),
13725                                                 GFP_KERNEL);
13726                 if (!new_triggers.patterns)
13727                         return -ENOMEM;
13728
13729                 new_triggers.n_patterns = n_patterns;
13730                 i = 0;
13731
13732                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13733                                     rem) {
13734                         u8 *mask_pat;
13735
13736                         err = nla_parse_nested_deprecated(pat_tb,
13737                                                           MAX_NL80211_PKTPAT,
13738                                                           pat,
13739                                                           nl80211_packet_pattern_policy,
13740                                                           info->extack);
13741                         if (err)
13742                                 goto error;
13743
13744                         err = -EINVAL;
13745                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
13746                             !pat_tb[NL80211_PKTPAT_PATTERN])
13747                                 goto error;
13748                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13749                         mask_len = DIV_ROUND_UP(pat_len, 8);
13750                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13751                                 goto error;
13752                         if (pat_len > wowlan->pattern_max_len ||
13753                             pat_len < wowlan->pattern_min_len)
13754                                 goto error;
13755
13756                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
13757                                 pkt_offset = 0;
13758                         else
13759                                 pkt_offset = nla_get_u32(
13760                                         pat_tb[NL80211_PKTPAT_OFFSET]);
13761                         if (pkt_offset > wowlan->max_pkt_offset)
13762                                 goto error;
13763                         new_triggers.patterns[i].pkt_offset = pkt_offset;
13764
13765                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13766                         if (!mask_pat) {
13767                                 err = -ENOMEM;
13768                                 goto error;
13769                         }
13770                         new_triggers.patterns[i].mask = mask_pat;
13771                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13772                                mask_len);
13773                         mask_pat += mask_len;
13774                         new_triggers.patterns[i].pattern = mask_pat;
13775                         new_triggers.patterns[i].pattern_len = pat_len;
13776                         memcpy(mask_pat,
13777                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13778                                pat_len);
13779                         i++;
13780                 }
13781         }
13782
13783         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
13784                 regular = true;
13785                 err = nl80211_parse_wowlan_tcp(
13786                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
13787                         &new_triggers);
13788                 if (err)
13789                         goto error;
13790         }
13791
13792         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
13793                 regular = true;
13794                 err = nl80211_parse_wowlan_nd(
13795                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
13796                         &new_triggers);
13797                 if (err)
13798                         goto error;
13799         }
13800
13801         /* The 'any' trigger means the device continues operating more or less
13802          * as in its normal operation mode and wakes up the host on most of the
13803          * normal interrupts (like packet RX, ...)
13804          * It therefore makes little sense to combine with the more constrained
13805          * wakeup trigger modes.
13806          */
13807         if (new_triggers.any && regular) {
13808                 err = -EINVAL;
13809                 goto error;
13810         }
13811
13812         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
13813         if (!ntrig) {
13814                 err = -ENOMEM;
13815                 goto error;
13816         }
13817         cfg80211_rdev_free_wowlan(rdev);
13818         rdev->wiphy.wowlan_config = ntrig;
13819
13820  set_wakeup:
13821         if (rdev->ops->set_wakeup &&
13822             prev_enabled != !!rdev->wiphy.wowlan_config)
13823                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
13824
13825         return 0;
13826  error:
13827         for (i = 0; i < new_triggers.n_patterns; i++)
13828                 kfree(new_triggers.patterns[i].mask);
13829         kfree(new_triggers.patterns);
13830         if (new_triggers.tcp && new_triggers.tcp->sock)
13831                 sock_release(new_triggers.tcp->sock);
13832         kfree(new_triggers.tcp);
13833         kfree(new_triggers.nd_config);
13834         return err;
13835 }
13836 #endif
13837
13838 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
13839                                        struct cfg80211_registered_device *rdev)
13840 {
13841         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
13842         int i, j, pat_len;
13843         struct cfg80211_coalesce_rules *rule;
13844
13845         if (!rdev->coalesce->n_rules)
13846                 return 0;
13847
13848         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
13849         if (!nl_rules)
13850                 return -ENOBUFS;
13851
13852         for (i = 0; i < rdev->coalesce->n_rules; i++) {
13853                 nl_rule = nla_nest_start_noflag(msg, i + 1);
13854                 if (!nl_rule)
13855                         return -ENOBUFS;
13856
13857                 rule = &rdev->coalesce->rules[i];
13858                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
13859                                 rule->delay))
13860                         return -ENOBUFS;
13861
13862                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
13863                                 rule->condition))
13864                         return -ENOBUFS;
13865
13866                 nl_pats = nla_nest_start_noflag(msg,
13867                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
13868                 if (!nl_pats)
13869                         return -ENOBUFS;
13870
13871                 for (j = 0; j < rule->n_patterns; j++) {
13872                         nl_pat = nla_nest_start_noflag(msg, j + 1);
13873                         if (!nl_pat)
13874                                 return -ENOBUFS;
13875                         pat_len = rule->patterns[j].pattern_len;
13876                         if (nla_put(msg, NL80211_PKTPAT_MASK,
13877                                     DIV_ROUND_UP(pat_len, 8),
13878                                     rule->patterns[j].mask) ||
13879                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13880                                     rule->patterns[j].pattern) ||
13881                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13882                                         rule->patterns[j].pkt_offset))
13883                                 return -ENOBUFS;
13884                         nla_nest_end(msg, nl_pat);
13885                 }
13886                 nla_nest_end(msg, nl_pats);
13887                 nla_nest_end(msg, nl_rule);
13888         }
13889         nla_nest_end(msg, nl_rules);
13890
13891         return 0;
13892 }
13893
13894 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
13895 {
13896         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13897         struct sk_buff *msg;
13898         void *hdr;
13899
13900         if (!rdev->wiphy.coalesce)
13901                 return -EOPNOTSUPP;
13902
13903         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13904         if (!msg)
13905                 return -ENOMEM;
13906
13907         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13908                              NL80211_CMD_GET_COALESCE);
13909         if (!hdr)
13910                 goto nla_put_failure;
13911
13912         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
13913                 goto nla_put_failure;
13914
13915         genlmsg_end(msg, hdr);
13916         return genlmsg_reply(msg, info);
13917
13918 nla_put_failure:
13919         nlmsg_free(msg);
13920         return -ENOBUFS;
13921 }
13922
13923 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
13924 {
13925         struct cfg80211_coalesce *coalesce = rdev->coalesce;
13926         int i, j;
13927         struct cfg80211_coalesce_rules *rule;
13928
13929         if (!coalesce)
13930                 return;
13931
13932         for (i = 0; i < coalesce->n_rules; i++) {
13933                 rule = &coalesce->rules[i];
13934                 for (j = 0; j < rule->n_patterns; j++)
13935                         kfree(rule->patterns[j].mask);
13936                 kfree(rule->patterns);
13937         }
13938         kfree(coalesce->rules);
13939         kfree(coalesce);
13940         rdev->coalesce = NULL;
13941 }
13942
13943 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
13944                                        struct nlattr *rule,
13945                                        struct cfg80211_coalesce_rules *new_rule)
13946 {
13947         int err, i;
13948         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13949         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
13950         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
13951         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13952
13953         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
13954                                           rule, nl80211_coalesce_policy, NULL);
13955         if (err)
13956                 return err;
13957
13958         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
13959                 new_rule->delay =
13960                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
13961         if (new_rule->delay > coalesce->max_delay)
13962                 return -EINVAL;
13963
13964         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
13965                 new_rule->condition =
13966                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
13967
13968         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
13969                 return -EINVAL;
13970
13971         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13972                             rem)
13973                 n_patterns++;
13974         if (n_patterns > coalesce->n_patterns)
13975                 return -EINVAL;
13976
13977         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
13978                                      GFP_KERNEL);
13979         if (!new_rule->patterns)
13980                 return -ENOMEM;
13981
13982         new_rule->n_patterns = n_patterns;
13983         i = 0;
13984
13985         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13986                             rem) {
13987                 u8 *mask_pat;
13988
13989                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
13990                                                   pat,
13991                                                   nl80211_packet_pattern_policy,
13992                                                   NULL);
13993                 if (err)
13994                         return err;
13995
13996                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13997                     !pat_tb[NL80211_PKTPAT_PATTERN])
13998                         return -EINVAL;
13999                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
14000                 mask_len = DIV_ROUND_UP(pat_len, 8);
14001                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
14002                         return -EINVAL;
14003                 if (pat_len > coalesce->pattern_max_len ||
14004                     pat_len < coalesce->pattern_min_len)
14005                         return -EINVAL;
14006
14007                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
14008                         pkt_offset = 0;
14009                 else
14010                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
14011                 if (pkt_offset > coalesce->max_pkt_offset)
14012                         return -EINVAL;
14013                 new_rule->patterns[i].pkt_offset = pkt_offset;
14014
14015                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
14016                 if (!mask_pat)
14017                         return -ENOMEM;
14018
14019                 new_rule->patterns[i].mask = mask_pat;
14020                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
14021                        mask_len);
14022
14023                 mask_pat += mask_len;
14024                 new_rule->patterns[i].pattern = mask_pat;
14025                 new_rule->patterns[i].pattern_len = pat_len;
14026                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
14027                        pat_len);
14028                 i++;
14029         }
14030
14031         return 0;
14032 }
14033
14034 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
14035 {
14036         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14037         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
14038         struct cfg80211_coalesce new_coalesce = {};
14039         struct cfg80211_coalesce *n_coalesce;
14040         int err, rem_rule, n_rules = 0, i, j;
14041         struct nlattr *rule;
14042         struct cfg80211_coalesce_rules *tmp_rule;
14043
14044         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
14045                 return -EOPNOTSUPP;
14046
14047         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
14048                 cfg80211_rdev_free_coalesce(rdev);
14049                 rdev_set_coalesce(rdev, NULL);
14050                 return 0;
14051         }
14052
14053         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
14054                             rem_rule)
14055                 n_rules++;
14056         if (n_rules > coalesce->n_rules)
14057                 return -EINVAL;
14058
14059         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
14060                                      GFP_KERNEL);
14061         if (!new_coalesce.rules)
14062                 return -ENOMEM;
14063
14064         new_coalesce.n_rules = n_rules;
14065         i = 0;
14066
14067         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
14068                             rem_rule) {
14069                 err = nl80211_parse_coalesce_rule(rdev, rule,
14070                                                   &new_coalesce.rules[i]);
14071                 if (err)
14072                         goto error;
14073
14074                 i++;
14075         }
14076
14077         err = rdev_set_coalesce(rdev, &new_coalesce);
14078         if (err)
14079                 goto error;
14080
14081         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
14082         if (!n_coalesce) {
14083                 err = -ENOMEM;
14084                 goto error;
14085         }
14086         cfg80211_rdev_free_coalesce(rdev);
14087         rdev->coalesce = n_coalesce;
14088
14089         return 0;
14090 error:
14091         for (i = 0; i < new_coalesce.n_rules; i++) {
14092                 tmp_rule = &new_coalesce.rules[i];
14093                 for (j = 0; j < tmp_rule->n_patterns; j++)
14094                         kfree(tmp_rule->patterns[j].mask);
14095                 kfree(tmp_rule->patterns);
14096         }
14097         kfree(new_coalesce.rules);
14098
14099         return err;
14100 }
14101
14102 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
14103 {
14104         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14105         struct net_device *dev = info->user_ptr[1];
14106         struct wireless_dev *wdev = dev->ieee80211_ptr;
14107         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
14108         struct cfg80211_gtk_rekey_data rekey_data = {};
14109         int err;
14110
14111         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
14112                 return -EINVAL;
14113
14114         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
14115                                           info->attrs[NL80211_ATTR_REKEY_DATA],
14116                                           nl80211_rekey_policy, info->extack);
14117         if (err)
14118                 return err;
14119
14120         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
14121             !tb[NL80211_REKEY_DATA_KCK])
14122                 return -EINVAL;
14123         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
14124             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
14125               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
14126                 return -ERANGE;
14127         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
14128             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
14129               nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN) &&
14130              !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KCK_32 &&
14131                nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN_32))
14132                 return -ERANGE;
14133
14134         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
14135         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
14136         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
14137         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
14138         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
14139         if (tb[NL80211_REKEY_DATA_AKM])
14140                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
14141
14142         if (!wdev->connected)
14143                 return -ENOTCONN;
14144
14145         if (!rdev->ops->set_rekey_data)
14146                 return -EOPNOTSUPP;
14147
14148         return rdev_set_rekey_data(rdev, dev, &rekey_data);
14149 }
14150
14151 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
14152                                              struct genl_info *info)
14153 {
14154         struct net_device *dev = info->user_ptr[1];
14155         struct wireless_dev *wdev = dev->ieee80211_ptr;
14156
14157         if (wdev->iftype != NL80211_IFTYPE_AP &&
14158             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14159                 return -EINVAL;
14160
14161         if (wdev->ap_unexpected_nlportid)
14162                 return -EBUSY;
14163
14164         wdev->ap_unexpected_nlportid = info->snd_portid;
14165         return 0;
14166 }
14167
14168 static int nl80211_probe_client(struct sk_buff *skb,
14169                                 struct genl_info *info)
14170 {
14171         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14172         struct net_device *dev = info->user_ptr[1];
14173         struct wireless_dev *wdev = dev->ieee80211_ptr;
14174         struct sk_buff *msg;
14175         void *hdr;
14176         const u8 *addr;
14177         u64 cookie;
14178         int err;
14179
14180         if (wdev->iftype != NL80211_IFTYPE_AP &&
14181             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14182                 return -EOPNOTSUPP;
14183
14184         if (!info->attrs[NL80211_ATTR_MAC])
14185                 return -EINVAL;
14186
14187         if (!rdev->ops->probe_client)
14188                 return -EOPNOTSUPP;
14189
14190         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14191         if (!msg)
14192                 return -ENOMEM;
14193
14194         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14195                              NL80211_CMD_PROBE_CLIENT);
14196         if (!hdr) {
14197                 err = -ENOBUFS;
14198                 goto free_msg;
14199         }
14200
14201         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14202
14203         err = rdev_probe_client(rdev, dev, addr, &cookie);
14204         if (err)
14205                 goto free_msg;
14206
14207         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14208                               NL80211_ATTR_PAD))
14209                 goto nla_put_failure;
14210
14211         genlmsg_end(msg, hdr);
14212
14213         return genlmsg_reply(msg, info);
14214
14215  nla_put_failure:
14216         err = -ENOBUFS;
14217  free_msg:
14218         nlmsg_free(msg);
14219         return err;
14220 }
14221
14222 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
14223 {
14224         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14225         struct cfg80211_beacon_registration *reg, *nreg;
14226         int rv;
14227
14228         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
14229                 return -EOPNOTSUPP;
14230
14231         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
14232         if (!nreg)
14233                 return -ENOMEM;
14234
14235         /* First, check if already registered. */
14236         spin_lock_bh(&rdev->beacon_registrations_lock);
14237         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14238                 if (reg->nlportid == info->snd_portid) {
14239                         rv = -EALREADY;
14240                         goto out_err;
14241                 }
14242         }
14243         /* Add it to the list */
14244         nreg->nlportid = info->snd_portid;
14245         list_add(&nreg->list, &rdev->beacon_registrations);
14246
14247         spin_unlock_bh(&rdev->beacon_registrations_lock);
14248
14249         return 0;
14250 out_err:
14251         spin_unlock_bh(&rdev->beacon_registrations_lock);
14252         kfree(nreg);
14253         return rv;
14254 }
14255
14256 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
14257 {
14258         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14259         struct wireless_dev *wdev = info->user_ptr[1];
14260         int err;
14261
14262         if (!rdev->ops->start_p2p_device)
14263                 return -EOPNOTSUPP;
14264
14265         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14266                 return -EOPNOTSUPP;
14267
14268         if (wdev_running(wdev))
14269                 return 0;
14270
14271         if (rfkill_blocked(rdev->wiphy.rfkill))
14272                 return -ERFKILL;
14273
14274         err = rdev_start_p2p_device(rdev, wdev);
14275         if (err)
14276                 return err;
14277
14278         wdev->is_running = true;
14279         rdev->opencount++;
14280
14281         return 0;
14282 }
14283
14284 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
14285 {
14286         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14287         struct wireless_dev *wdev = info->user_ptr[1];
14288
14289         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14290                 return -EOPNOTSUPP;
14291
14292         if (!rdev->ops->stop_p2p_device)
14293                 return -EOPNOTSUPP;
14294
14295         cfg80211_stop_p2p_device(rdev, wdev);
14296
14297         return 0;
14298 }
14299
14300 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
14301 {
14302         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14303         struct wireless_dev *wdev = info->user_ptr[1];
14304         struct cfg80211_nan_conf conf = {};
14305         int err;
14306
14307         if (wdev->iftype != NL80211_IFTYPE_NAN)
14308                 return -EOPNOTSUPP;
14309
14310         if (wdev_running(wdev))
14311                 return -EEXIST;
14312
14313         if (rfkill_blocked(rdev->wiphy.rfkill))
14314                 return -ERFKILL;
14315
14316         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
14317                 return -EINVAL;
14318
14319         conf.master_pref =
14320                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14321
14322         if (info->attrs[NL80211_ATTR_BANDS]) {
14323                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14324
14325                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14326                         return -EOPNOTSUPP;
14327
14328                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14329                         return -EINVAL;
14330
14331                 conf.bands = bands;
14332         }
14333
14334         err = rdev_start_nan(rdev, wdev, &conf);
14335         if (err)
14336                 return err;
14337
14338         wdev->is_running = true;
14339         rdev->opencount++;
14340
14341         return 0;
14342 }
14343
14344 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
14345 {
14346         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14347         struct wireless_dev *wdev = info->user_ptr[1];
14348
14349         if (wdev->iftype != NL80211_IFTYPE_NAN)
14350                 return -EOPNOTSUPP;
14351
14352         cfg80211_stop_nan(rdev, wdev);
14353
14354         return 0;
14355 }
14356
14357 static int validate_nan_filter(struct nlattr *filter_attr)
14358 {
14359         struct nlattr *attr;
14360         int len = 0, n_entries = 0, rem;
14361
14362         nla_for_each_nested(attr, filter_attr, rem) {
14363                 len += nla_len(attr);
14364                 n_entries++;
14365         }
14366
14367         if (len >= U8_MAX)
14368                 return -EINVAL;
14369
14370         return n_entries;
14371 }
14372
14373 static int handle_nan_filter(struct nlattr *attr_filter,
14374                              struct cfg80211_nan_func *func,
14375                              bool tx)
14376 {
14377         struct nlattr *attr;
14378         int n_entries, rem, i;
14379         struct cfg80211_nan_func_filter *filter;
14380
14381         n_entries = validate_nan_filter(attr_filter);
14382         if (n_entries < 0)
14383                 return n_entries;
14384
14385         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
14386
14387         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
14388         if (!filter)
14389                 return -ENOMEM;
14390
14391         i = 0;
14392         nla_for_each_nested(attr, attr_filter, rem) {
14393                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
14394                 if (!filter[i].filter)
14395                         goto err;
14396
14397                 filter[i].len = nla_len(attr);
14398                 i++;
14399         }
14400         if (tx) {
14401                 func->num_tx_filters = n_entries;
14402                 func->tx_filters = filter;
14403         } else {
14404                 func->num_rx_filters = n_entries;
14405                 func->rx_filters = filter;
14406         }
14407
14408         return 0;
14409
14410 err:
14411         i = 0;
14412         nla_for_each_nested(attr, attr_filter, rem) {
14413                 kfree(filter[i].filter);
14414                 i++;
14415         }
14416         kfree(filter);
14417         return -ENOMEM;
14418 }
14419
14420 static int nl80211_nan_add_func(struct sk_buff *skb,
14421                                 struct genl_info *info)
14422 {
14423         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14424         struct wireless_dev *wdev = info->user_ptr[1];
14425         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
14426         struct cfg80211_nan_func *func;
14427         struct sk_buff *msg = NULL;
14428         void *hdr = NULL;
14429         int err = 0;
14430
14431         if (wdev->iftype != NL80211_IFTYPE_NAN)
14432                 return -EOPNOTSUPP;
14433
14434         if (!wdev_running(wdev))
14435                 return -ENOTCONN;
14436
14437         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
14438                 return -EINVAL;
14439
14440         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
14441                                           info->attrs[NL80211_ATTR_NAN_FUNC],
14442                                           nl80211_nan_func_policy,
14443                                           info->extack);
14444         if (err)
14445                 return err;
14446
14447         func = kzalloc(sizeof(*func), GFP_KERNEL);
14448         if (!func)
14449                 return -ENOMEM;
14450
14451         func->cookie = cfg80211_assign_cookie(rdev);
14452
14453         if (!tb[NL80211_NAN_FUNC_TYPE]) {
14454                 err = -EINVAL;
14455                 goto out;
14456         }
14457
14458
14459         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
14460
14461         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
14462                 err = -EINVAL;
14463                 goto out;
14464         }
14465
14466         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
14467                sizeof(func->service_id));
14468
14469         func->close_range =
14470                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
14471
14472         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
14473                 func->serv_spec_info_len =
14474                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
14475                 func->serv_spec_info =
14476                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
14477                                 func->serv_spec_info_len,
14478                                 GFP_KERNEL);
14479                 if (!func->serv_spec_info) {
14480                         err = -ENOMEM;
14481                         goto out;
14482                 }
14483         }
14484
14485         if (tb[NL80211_NAN_FUNC_TTL])
14486                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
14487
14488         switch (func->type) {
14489         case NL80211_NAN_FUNC_PUBLISH:
14490                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
14491                         err = -EINVAL;
14492                         goto out;
14493                 }
14494
14495                 func->publish_type =
14496                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
14497                 func->publish_bcast =
14498                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
14499
14500                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
14501                         func->publish_bcast) {
14502                         err = -EINVAL;
14503                         goto out;
14504                 }
14505                 break;
14506         case NL80211_NAN_FUNC_SUBSCRIBE:
14507                 func->subscribe_active =
14508                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
14509                 break;
14510         case NL80211_NAN_FUNC_FOLLOW_UP:
14511                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
14512                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
14513                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
14514                         err = -EINVAL;
14515                         goto out;
14516                 }
14517
14518                 func->followup_id =
14519                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
14520                 func->followup_reqid =
14521                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
14522                 memcpy(func->followup_dest.addr,
14523                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
14524                        sizeof(func->followup_dest.addr));
14525                 if (func->ttl) {
14526                         err = -EINVAL;
14527                         goto out;
14528                 }
14529                 break;
14530         default:
14531                 err = -EINVAL;
14532                 goto out;
14533         }
14534
14535         if (tb[NL80211_NAN_FUNC_SRF]) {
14536                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
14537
14538                 err = nla_parse_nested_deprecated(srf_tb,
14539                                                   NL80211_NAN_SRF_ATTR_MAX,
14540                                                   tb[NL80211_NAN_FUNC_SRF],
14541                                                   nl80211_nan_srf_policy,
14542                                                   info->extack);
14543                 if (err)
14544                         goto out;
14545
14546                 func->srf_include =
14547                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
14548
14549                 if (srf_tb[NL80211_NAN_SRF_BF]) {
14550                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
14551                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
14552                                 err = -EINVAL;
14553                                 goto out;
14554                         }
14555
14556                         func->srf_bf_len =
14557                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
14558                         func->srf_bf =
14559                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
14560                                         func->srf_bf_len, GFP_KERNEL);
14561                         if (!func->srf_bf) {
14562                                 err = -ENOMEM;
14563                                 goto out;
14564                         }
14565
14566                         func->srf_bf_idx =
14567                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
14568                 } else {
14569                         struct nlattr *attr, *mac_attr =
14570                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
14571                         int n_entries, rem, i = 0;
14572
14573                         if (!mac_attr) {
14574                                 err = -EINVAL;
14575                                 goto out;
14576                         }
14577
14578                         n_entries = validate_acl_mac_addrs(mac_attr);
14579                         if (n_entries <= 0) {
14580                                 err = -EINVAL;
14581                                 goto out;
14582                         }
14583
14584                         func->srf_num_macs = n_entries;
14585                         func->srf_macs =
14586                                 kcalloc(n_entries, sizeof(*func->srf_macs),
14587                                         GFP_KERNEL);
14588                         if (!func->srf_macs) {
14589                                 err = -ENOMEM;
14590                                 goto out;
14591                         }
14592
14593                         nla_for_each_nested(attr, mac_attr, rem)
14594                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
14595                                        sizeof(*func->srf_macs));
14596                 }
14597         }
14598
14599         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
14600                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
14601                                         func, true);
14602                 if (err)
14603                         goto out;
14604         }
14605
14606         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
14607                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
14608                                         func, false);
14609                 if (err)
14610                         goto out;
14611         }
14612
14613         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14614         if (!msg) {
14615                 err = -ENOMEM;
14616                 goto out;
14617         }
14618
14619         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14620                              NL80211_CMD_ADD_NAN_FUNCTION);
14621         /* This can't really happen - we just allocated 4KB */
14622         if (WARN_ON(!hdr)) {
14623                 err = -ENOMEM;
14624                 goto out;
14625         }
14626
14627         err = rdev_add_nan_func(rdev, wdev, func);
14628 out:
14629         if (err < 0) {
14630                 cfg80211_free_nan_func(func);
14631                 nlmsg_free(msg);
14632                 return err;
14633         }
14634
14635         /* propagate the instance id and cookie to userspace  */
14636         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
14637                               NL80211_ATTR_PAD))
14638                 goto nla_put_failure;
14639
14640         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14641         if (!func_attr)
14642                 goto nla_put_failure;
14643
14644         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
14645                        func->instance_id))
14646                 goto nla_put_failure;
14647
14648         nla_nest_end(msg, func_attr);
14649
14650         genlmsg_end(msg, hdr);
14651         return genlmsg_reply(msg, info);
14652
14653 nla_put_failure:
14654         nlmsg_free(msg);
14655         return -ENOBUFS;
14656 }
14657
14658 static int nl80211_nan_del_func(struct sk_buff *skb,
14659                                struct genl_info *info)
14660 {
14661         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14662         struct wireless_dev *wdev = info->user_ptr[1];
14663         u64 cookie;
14664
14665         if (wdev->iftype != NL80211_IFTYPE_NAN)
14666                 return -EOPNOTSUPP;
14667
14668         if (!wdev_running(wdev))
14669                 return -ENOTCONN;
14670
14671         if (!info->attrs[NL80211_ATTR_COOKIE])
14672                 return -EINVAL;
14673
14674         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
14675
14676         rdev_del_nan_func(rdev, wdev, cookie);
14677
14678         return 0;
14679 }
14680
14681 static int nl80211_nan_change_config(struct sk_buff *skb,
14682                                      struct genl_info *info)
14683 {
14684         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14685         struct wireless_dev *wdev = info->user_ptr[1];
14686         struct cfg80211_nan_conf conf = {};
14687         u32 changed = 0;
14688
14689         if (wdev->iftype != NL80211_IFTYPE_NAN)
14690                 return -EOPNOTSUPP;
14691
14692         if (!wdev_running(wdev))
14693                 return -ENOTCONN;
14694
14695         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
14696                 conf.master_pref =
14697                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14698                 if (conf.master_pref <= 1 || conf.master_pref == 255)
14699                         return -EINVAL;
14700
14701                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
14702         }
14703
14704         if (info->attrs[NL80211_ATTR_BANDS]) {
14705                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14706
14707                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14708                         return -EOPNOTSUPP;
14709
14710                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14711                         return -EINVAL;
14712
14713                 conf.bands = bands;
14714                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
14715         }
14716
14717         if (!changed)
14718                 return -EINVAL;
14719
14720         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
14721 }
14722
14723 void cfg80211_nan_match(struct wireless_dev *wdev,
14724                         struct cfg80211_nan_match_params *match, gfp_t gfp)
14725 {
14726         struct wiphy *wiphy = wdev->wiphy;
14727         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14728         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
14729         struct sk_buff *msg;
14730         void *hdr;
14731
14732         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
14733                 return;
14734
14735         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14736         if (!msg)
14737                 return;
14738
14739         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
14740         if (!hdr) {
14741                 nlmsg_free(msg);
14742                 return;
14743         }
14744
14745         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14746             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14747                                          wdev->netdev->ifindex)) ||
14748             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14749                               NL80211_ATTR_PAD))
14750                 goto nla_put_failure;
14751
14752         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
14753                               NL80211_ATTR_PAD) ||
14754             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
14755                 goto nla_put_failure;
14756
14757         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
14758         if (!match_attr)
14759                 goto nla_put_failure;
14760
14761         local_func_attr = nla_nest_start_noflag(msg,
14762                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
14763         if (!local_func_attr)
14764                 goto nla_put_failure;
14765
14766         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
14767                 goto nla_put_failure;
14768
14769         nla_nest_end(msg, local_func_attr);
14770
14771         peer_func_attr = nla_nest_start_noflag(msg,
14772                                                NL80211_NAN_MATCH_FUNC_PEER);
14773         if (!peer_func_attr)
14774                 goto nla_put_failure;
14775
14776         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
14777             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
14778                 goto nla_put_failure;
14779
14780         if (match->info && match->info_len &&
14781             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
14782                     match->info))
14783                 goto nla_put_failure;
14784
14785         nla_nest_end(msg, peer_func_attr);
14786         nla_nest_end(msg, match_attr);
14787         genlmsg_end(msg, hdr);
14788
14789         if (!wdev->owner_nlportid)
14790                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14791                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14792         else
14793                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14794                                 wdev->owner_nlportid);
14795
14796         return;
14797
14798 nla_put_failure:
14799         nlmsg_free(msg);
14800 }
14801 EXPORT_SYMBOL(cfg80211_nan_match);
14802
14803 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
14804                                   u8 inst_id,
14805                                   enum nl80211_nan_func_term_reason reason,
14806                                   u64 cookie, gfp_t gfp)
14807 {
14808         struct wiphy *wiphy = wdev->wiphy;
14809         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14810         struct sk_buff *msg;
14811         struct nlattr *func_attr;
14812         void *hdr;
14813
14814         if (WARN_ON(!inst_id))
14815                 return;
14816
14817         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14818         if (!msg)
14819                 return;
14820
14821         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
14822         if (!hdr) {
14823                 nlmsg_free(msg);
14824                 return;
14825         }
14826
14827         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14828             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14829                                          wdev->netdev->ifindex)) ||
14830             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14831                               NL80211_ATTR_PAD))
14832                 goto nla_put_failure;
14833
14834         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14835                               NL80211_ATTR_PAD))
14836                 goto nla_put_failure;
14837
14838         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14839         if (!func_attr)
14840                 goto nla_put_failure;
14841
14842         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
14843             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
14844                 goto nla_put_failure;
14845
14846         nla_nest_end(msg, func_attr);
14847         genlmsg_end(msg, hdr);
14848
14849         if (!wdev->owner_nlportid)
14850                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14851                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14852         else
14853                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14854                                 wdev->owner_nlportid);
14855
14856         return;
14857
14858 nla_put_failure:
14859         nlmsg_free(msg);
14860 }
14861 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
14862
14863 static int nl80211_get_protocol_features(struct sk_buff *skb,
14864                                          struct genl_info *info)
14865 {
14866         void *hdr;
14867         struct sk_buff *msg;
14868
14869         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14870         if (!msg)
14871                 return -ENOMEM;
14872
14873         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14874                              NL80211_CMD_GET_PROTOCOL_FEATURES);
14875         if (!hdr)
14876                 goto nla_put_failure;
14877
14878         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
14879                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
14880                 goto nla_put_failure;
14881
14882         genlmsg_end(msg, hdr);
14883         return genlmsg_reply(msg, info);
14884
14885  nla_put_failure:
14886         kfree_skb(msg);
14887         return -ENOBUFS;
14888 }
14889
14890 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
14891 {
14892         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14893         struct cfg80211_update_ft_ies_params ft_params;
14894         struct net_device *dev = info->user_ptr[1];
14895
14896         if (!rdev->ops->update_ft_ies)
14897                 return -EOPNOTSUPP;
14898
14899         if (!info->attrs[NL80211_ATTR_MDID] ||
14900             !info->attrs[NL80211_ATTR_IE])
14901                 return -EINVAL;
14902
14903         memset(&ft_params, 0, sizeof(ft_params));
14904         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
14905         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14906         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14907
14908         return rdev_update_ft_ies(rdev, dev, &ft_params);
14909 }
14910
14911 static int nl80211_crit_protocol_start(struct sk_buff *skb,
14912                                        struct genl_info *info)
14913 {
14914         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14915         struct wireless_dev *wdev = info->user_ptr[1];
14916         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
14917         u16 duration;
14918         int ret;
14919
14920         if (!rdev->ops->crit_proto_start)
14921                 return -EOPNOTSUPP;
14922
14923         if (WARN_ON(!rdev->ops->crit_proto_stop))
14924                 return -EINVAL;
14925
14926         if (rdev->crit_proto_nlportid)
14927                 return -EBUSY;
14928
14929         /* determine protocol if provided */
14930         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
14931                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
14932
14933         if (proto >= NUM_NL80211_CRIT_PROTO)
14934                 return -EINVAL;
14935
14936         /* timeout must be provided */
14937         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
14938                 return -EINVAL;
14939
14940         duration =
14941                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
14942
14943         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
14944         if (!ret)
14945                 rdev->crit_proto_nlportid = info->snd_portid;
14946
14947         return ret;
14948 }
14949
14950 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
14951                                       struct genl_info *info)
14952 {
14953         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14954         struct wireless_dev *wdev = info->user_ptr[1];
14955
14956         if (!rdev->ops->crit_proto_stop)
14957                 return -EOPNOTSUPP;
14958
14959         if (rdev->crit_proto_nlportid) {
14960                 rdev->crit_proto_nlportid = 0;
14961                 rdev_crit_proto_stop(rdev, wdev);
14962         }
14963         return 0;
14964 }
14965
14966 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
14967                                        struct nlattr *attr,
14968                                        struct netlink_ext_ack *extack)
14969 {
14970         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
14971                 if (attr->nla_type & NLA_F_NESTED) {
14972                         NL_SET_ERR_MSG_ATTR(extack, attr,
14973                                             "unexpected nested data");
14974                         return -EINVAL;
14975                 }
14976
14977                 return 0;
14978         }
14979
14980         if (!(attr->nla_type & NLA_F_NESTED)) {
14981                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
14982                 return -EINVAL;
14983         }
14984
14985         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
14986 }
14987
14988 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
14989 {
14990         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14991         struct wireless_dev *wdev =
14992                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
14993                                            info->attrs);
14994         int i, err;
14995         u32 vid, subcmd;
14996
14997         if (!rdev->wiphy.vendor_commands)
14998                 return -EOPNOTSUPP;
14999
15000         if (IS_ERR(wdev)) {
15001                 err = PTR_ERR(wdev);
15002                 if (err != -EINVAL)
15003                         return err;
15004                 wdev = NULL;
15005         } else if (wdev->wiphy != &rdev->wiphy) {
15006                 return -EINVAL;
15007         }
15008
15009         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
15010             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
15011                 return -EINVAL;
15012
15013         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
15014         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
15015         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
15016                 const struct wiphy_vendor_command *vcmd;
15017                 void *data = NULL;
15018                 int len = 0;
15019
15020                 vcmd = &rdev->wiphy.vendor_commands[i];
15021
15022                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
15023                         continue;
15024
15025                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
15026                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
15027                         if (!wdev)
15028                                 return -EINVAL;
15029                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
15030                             !wdev->netdev)
15031                                 return -EINVAL;
15032
15033                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
15034                                 if (!wdev_running(wdev))
15035                                         return -ENETDOWN;
15036                         }
15037                 } else {
15038                         wdev = NULL;
15039                 }
15040
15041                 if (!vcmd->doit)
15042                         return -EOPNOTSUPP;
15043
15044                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
15045                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
15046                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
15047
15048                         err = nl80211_vendor_check_policy(vcmd,
15049                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
15050                                         info->extack);
15051                         if (err)
15052                                 return err;
15053                 }
15054
15055                 rdev->cur_cmd_info = info;
15056                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
15057                 rdev->cur_cmd_info = NULL;
15058                 return err;
15059         }
15060
15061         return -EOPNOTSUPP;
15062 }
15063
15064 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
15065                                        struct netlink_callback *cb,
15066                                        struct cfg80211_registered_device **rdev,
15067                                        struct wireless_dev **wdev)
15068 {
15069         struct nlattr **attrbuf;
15070         u32 vid, subcmd;
15071         unsigned int i;
15072         int vcmd_idx = -1;
15073         int err;
15074         void *data = NULL;
15075         unsigned int data_len = 0;
15076
15077         if (cb->args[0]) {
15078                 /* subtract the 1 again here */
15079                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
15080                 struct wireless_dev *tmp;
15081
15082                 if (!wiphy)
15083                         return -ENODEV;
15084                 *rdev = wiphy_to_rdev(wiphy);
15085                 *wdev = NULL;
15086
15087                 if (cb->args[1]) {
15088                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
15089                                 if (tmp->identifier == cb->args[1] - 1) {
15090                                         *wdev = tmp;
15091                                         break;
15092                                 }
15093                         }
15094                 }
15095
15096                 /* keep rtnl locked in successful case */
15097                 return 0;
15098         }
15099
15100         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
15101         if (!attrbuf)
15102                 return -ENOMEM;
15103
15104         err = nlmsg_parse_deprecated(cb->nlh,
15105                                      GENL_HDRLEN + nl80211_fam.hdrsize,
15106                                      attrbuf, nl80211_fam.maxattr,
15107                                      nl80211_policy, NULL);
15108         if (err)
15109                 goto out;
15110
15111         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
15112             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
15113                 err = -EINVAL;
15114                 goto out;
15115         }
15116
15117         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
15118         if (IS_ERR(*wdev))
15119                 *wdev = NULL;
15120
15121         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
15122         if (IS_ERR(*rdev)) {
15123                 err = PTR_ERR(*rdev);
15124                 goto out;
15125         }
15126
15127         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
15128         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
15129
15130         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
15131                 const struct wiphy_vendor_command *vcmd;
15132
15133                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
15134
15135                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
15136                         continue;
15137
15138                 if (!vcmd->dumpit) {
15139                         err = -EOPNOTSUPP;
15140                         goto out;
15141                 }
15142
15143                 vcmd_idx = i;
15144                 break;
15145         }
15146
15147         if (vcmd_idx < 0) {
15148                 err = -EOPNOTSUPP;
15149                 goto out;
15150         }
15151
15152         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
15153                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
15154                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
15155
15156                 err = nl80211_vendor_check_policy(
15157                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
15158                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
15159                                 cb->extack);
15160                 if (err)
15161                         goto out;
15162         }
15163
15164         /* 0 is the first index - add 1 to parse only once */
15165         cb->args[0] = (*rdev)->wiphy_idx + 1;
15166         /* add 1 to know if it was NULL */
15167         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
15168         cb->args[2] = vcmd_idx;
15169         cb->args[3] = (unsigned long)data;
15170         cb->args[4] = data_len;
15171
15172         /* keep rtnl locked in successful case */
15173         err = 0;
15174 out:
15175         kfree(attrbuf);
15176         return err;
15177 }
15178
15179 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
15180                                    struct netlink_callback *cb)
15181 {
15182         struct cfg80211_registered_device *rdev;
15183         struct wireless_dev *wdev;
15184         unsigned int vcmd_idx;
15185         const struct wiphy_vendor_command *vcmd;
15186         void *data;
15187         int data_len;
15188         int err;
15189         struct nlattr *vendor_data;
15190
15191         rtnl_lock();
15192         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
15193         if (err)
15194                 goto out;
15195
15196         vcmd_idx = cb->args[2];
15197         data = (void *)cb->args[3];
15198         data_len = cb->args[4];
15199         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
15200
15201         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
15202                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
15203                 if (!wdev) {
15204                         err = -EINVAL;
15205                         goto out;
15206                 }
15207                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
15208                     !wdev->netdev) {
15209                         err = -EINVAL;
15210                         goto out;
15211                 }
15212
15213                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
15214                         if (!wdev_running(wdev)) {
15215                                 err = -ENETDOWN;
15216                                 goto out;
15217                         }
15218                 }
15219         }
15220
15221         while (1) {
15222                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
15223                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
15224                                            NL80211_CMD_VENDOR);
15225                 if (!hdr)
15226                         break;
15227
15228                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15229                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
15230                                                wdev_id(wdev),
15231                                                NL80211_ATTR_PAD))) {
15232                         genlmsg_cancel(skb, hdr);
15233                         break;
15234                 }
15235
15236                 vendor_data = nla_nest_start_noflag(skb,
15237                                                     NL80211_ATTR_VENDOR_DATA);
15238                 if (!vendor_data) {
15239                         genlmsg_cancel(skb, hdr);
15240                         break;
15241                 }
15242
15243                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
15244                                    (unsigned long *)&cb->args[5]);
15245                 nla_nest_end(skb, vendor_data);
15246
15247                 if (err == -ENOBUFS || err == -ENOENT) {
15248                         genlmsg_cancel(skb, hdr);
15249                         break;
15250                 } else if (err <= 0) {
15251                         genlmsg_cancel(skb, hdr);
15252                         goto out;
15253                 }
15254
15255                 genlmsg_end(skb, hdr);
15256         }
15257
15258         err = skb->len;
15259  out:
15260         rtnl_unlock();
15261         return err;
15262 }
15263
15264 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
15265                                            enum nl80211_commands cmd,
15266                                            enum nl80211_attrs attr,
15267                                            int approxlen)
15268 {
15269         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15270
15271         if (WARN_ON(!rdev->cur_cmd_info))
15272                 return NULL;
15273
15274         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
15275                                            rdev->cur_cmd_info->snd_portid,
15276                                            rdev->cur_cmd_info->snd_seq,
15277                                            cmd, attr, NULL, GFP_KERNEL);
15278 }
15279 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
15280
15281 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
15282 {
15283         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
15284         void *hdr = ((void **)skb->cb)[1];
15285         struct nlattr *data = ((void **)skb->cb)[2];
15286
15287         /* clear CB data for netlink core to own from now on */
15288         memset(skb->cb, 0, sizeof(skb->cb));
15289
15290         if (WARN_ON(!rdev->cur_cmd_info)) {
15291                 kfree_skb(skb);
15292                 return -EINVAL;
15293         }
15294
15295         nla_nest_end(skb, data);
15296         genlmsg_end(skb, hdr);
15297         return genlmsg_reply(skb, rdev->cur_cmd_info);
15298 }
15299 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
15300
15301 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
15302 {
15303         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15304
15305         if (WARN_ON(!rdev->cur_cmd_info))
15306                 return 0;
15307
15308         return rdev->cur_cmd_info->snd_portid;
15309 }
15310 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
15311
15312 static int nl80211_set_qos_map(struct sk_buff *skb,
15313                                struct genl_info *info)
15314 {
15315         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15316         struct cfg80211_qos_map *qos_map = NULL;
15317         struct net_device *dev = info->user_ptr[1];
15318         u8 *pos, len, num_des, des_len, des;
15319         int ret;
15320
15321         if (!rdev->ops->set_qos_map)
15322                 return -EOPNOTSUPP;
15323
15324         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
15325                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
15326                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
15327
15328                 if (len % 2)
15329                         return -EINVAL;
15330
15331                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
15332                 if (!qos_map)
15333                         return -ENOMEM;
15334
15335                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
15336                 if (num_des) {
15337                         des_len = num_des *
15338                                 sizeof(struct cfg80211_dscp_exception);
15339                         memcpy(qos_map->dscp_exception, pos, des_len);
15340                         qos_map->num_des = num_des;
15341                         for (des = 0; des < num_des; des++) {
15342                                 if (qos_map->dscp_exception[des].up > 7) {
15343                                         kfree(qos_map);
15344                                         return -EINVAL;
15345                                 }
15346                         }
15347                         pos += des_len;
15348                 }
15349                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
15350         }
15351
15352         ret = nl80211_key_allowed(dev->ieee80211_ptr);
15353         if (!ret)
15354                 ret = rdev_set_qos_map(rdev, dev, qos_map);
15355
15356         kfree(qos_map);
15357         return ret;
15358 }
15359
15360 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
15361 {
15362         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15363         struct net_device *dev = info->user_ptr[1];
15364         struct wireless_dev *wdev = dev->ieee80211_ptr;
15365         const u8 *peer;
15366         u8 tsid, up;
15367         u16 admitted_time = 0;
15368
15369         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
15370                 return -EOPNOTSUPP;
15371
15372         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
15373             !info->attrs[NL80211_ATTR_USER_PRIO])
15374                 return -EINVAL;
15375
15376         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15377         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
15378
15379         /* WMM uses TIDs 0-7 even for TSPEC */
15380         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
15381                 /* TODO: handle 802.11 TSPEC/admission control
15382                  * need more attributes for that (e.g. BA session requirement);
15383                  * change the WMM adminssion test above to allow both then
15384                  */
15385                 return -EINVAL;
15386         }
15387
15388         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15389
15390         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
15391                 admitted_time =
15392                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
15393                 if (!admitted_time)
15394                         return -EINVAL;
15395         }
15396
15397         switch (wdev->iftype) {
15398         case NL80211_IFTYPE_STATION:
15399         case NL80211_IFTYPE_P2P_CLIENT:
15400                 if (wdev->connected)
15401                         break;
15402                 return -ENOTCONN;
15403         default:
15404                 return -EOPNOTSUPP;
15405         }
15406
15407         return rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
15408 }
15409
15410 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
15411 {
15412         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15413         struct net_device *dev = info->user_ptr[1];
15414         const u8 *peer;
15415         u8 tsid;
15416
15417         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
15418                 return -EINVAL;
15419
15420         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15421         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15422
15423         return rdev_del_tx_ts(rdev, dev, tsid, peer);
15424 }
15425
15426 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
15427                                        struct genl_info *info)
15428 {
15429         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15430         struct net_device *dev = info->user_ptr[1];
15431         struct wireless_dev *wdev = dev->ieee80211_ptr;
15432         struct cfg80211_chan_def chandef = {};
15433         const u8 *addr;
15434         u8 oper_class;
15435         int err;
15436
15437         if (!rdev->ops->tdls_channel_switch ||
15438             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15439                 return -EOPNOTSUPP;
15440
15441         switch (dev->ieee80211_ptr->iftype) {
15442         case NL80211_IFTYPE_STATION:
15443         case NL80211_IFTYPE_P2P_CLIENT:
15444                 break;
15445         default:
15446                 return -EOPNOTSUPP;
15447         }
15448
15449         if (!info->attrs[NL80211_ATTR_MAC] ||
15450             !info->attrs[NL80211_ATTR_OPER_CLASS])
15451                 return -EINVAL;
15452
15453         err = nl80211_parse_chandef(rdev, info, &chandef);
15454         if (err)
15455                 return err;
15456
15457         /*
15458          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
15459          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
15460          * specification is not defined for them.
15461          */
15462         if (chandef.chan->band == NL80211_BAND_2GHZ &&
15463             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
15464             chandef.width != NL80211_CHAN_WIDTH_20)
15465                 return -EINVAL;
15466
15467         /* we will be active on the TDLS link */
15468         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
15469                                            wdev->iftype))
15470                 return -EINVAL;
15471
15472         /* don't allow switching to DFS channels */
15473         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
15474                 return -EINVAL;
15475
15476         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15477         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
15478
15479         return rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
15480 }
15481
15482 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
15483                                               struct genl_info *info)
15484 {
15485         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15486         struct net_device *dev = info->user_ptr[1];
15487         const u8 *addr;
15488
15489         if (!rdev->ops->tdls_channel_switch ||
15490             !rdev->ops->tdls_cancel_channel_switch ||
15491             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15492                 return -EOPNOTSUPP;
15493
15494         switch (dev->ieee80211_ptr->iftype) {
15495         case NL80211_IFTYPE_STATION:
15496         case NL80211_IFTYPE_P2P_CLIENT:
15497                 break;
15498         default:
15499                 return -EOPNOTSUPP;
15500         }
15501
15502         if (!info->attrs[NL80211_ATTR_MAC])
15503                 return -EINVAL;
15504
15505         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15506
15507         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
15508
15509         return 0;
15510 }
15511
15512 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
15513                                             struct genl_info *info)
15514 {
15515         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15516         struct net_device *dev = info->user_ptr[1];
15517         struct wireless_dev *wdev = dev->ieee80211_ptr;
15518         const struct nlattr *nla;
15519         bool enabled;
15520
15521         if (!rdev->ops->set_multicast_to_unicast)
15522                 return -EOPNOTSUPP;
15523
15524         if (wdev->iftype != NL80211_IFTYPE_AP &&
15525             wdev->iftype != NL80211_IFTYPE_P2P_GO)
15526                 return -EOPNOTSUPP;
15527
15528         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
15529         enabled = nla_get_flag(nla);
15530
15531         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
15532 }
15533
15534 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
15535 {
15536         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15537         struct net_device *dev = info->user_ptr[1];
15538         struct wireless_dev *wdev = dev->ieee80211_ptr;
15539         struct cfg80211_pmk_conf pmk_conf = {};
15540
15541         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15542             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15543                 return -EOPNOTSUPP;
15544
15545         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15546                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15547                 return -EOPNOTSUPP;
15548
15549         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
15550                 return -EINVAL;
15551
15552         if (!wdev->connected)
15553                 return -ENOTCONN;
15554
15555         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15556         if (memcmp(pmk_conf.aa, wdev->u.client.connected_addr, ETH_ALEN))
15557                 return -EINVAL;
15558
15559         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
15560         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
15561         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
15562             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192)
15563                 return -EINVAL;
15564
15565         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
15566                 pmk_conf.pmk_r0_name =
15567                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
15568
15569         return rdev_set_pmk(rdev, dev, &pmk_conf);
15570 }
15571
15572 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
15573 {
15574         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15575         struct net_device *dev = info->user_ptr[1];
15576         struct wireless_dev *wdev = dev->ieee80211_ptr;
15577         const u8 *aa;
15578
15579         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15580             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15581                 return -EOPNOTSUPP;
15582
15583         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15584                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15585                 return -EOPNOTSUPP;
15586
15587         if (!info->attrs[NL80211_ATTR_MAC])
15588                 return -EINVAL;
15589
15590         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15591         return rdev_del_pmk(rdev, dev, aa);
15592 }
15593
15594 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
15595 {
15596         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15597         struct net_device *dev = info->user_ptr[1];
15598         struct cfg80211_external_auth_params params;
15599
15600         if (!rdev->ops->external_auth)
15601                 return -EOPNOTSUPP;
15602
15603         if (!info->attrs[NL80211_ATTR_SSID] &&
15604             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
15605             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
15606                 return -EINVAL;
15607
15608         if (!info->attrs[NL80211_ATTR_BSSID])
15609                 return -EINVAL;
15610
15611         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
15612                 return -EINVAL;
15613
15614         memset(&params, 0, sizeof(params));
15615
15616         if (info->attrs[NL80211_ATTR_SSID]) {
15617                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
15618                 if (params.ssid.ssid_len == 0)
15619                         return -EINVAL;
15620                 memcpy(params.ssid.ssid,
15621                        nla_data(info->attrs[NL80211_ATTR_SSID]),
15622                        params.ssid.ssid_len);
15623         }
15624
15625         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
15626                ETH_ALEN);
15627
15628         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15629
15630         if (info->attrs[NL80211_ATTR_PMKID])
15631                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
15632
15633         return rdev_external_auth(rdev, dev, &params);
15634 }
15635
15636 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
15637 {
15638         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
15639         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15640         struct net_device *dev = info->user_ptr[1];
15641         struct wireless_dev *wdev = dev->ieee80211_ptr;
15642         const u8 *buf;
15643         size_t len;
15644         u8 *dest;
15645         u16 proto;
15646         bool noencrypt;
15647         u64 cookie = 0;
15648         int link_id;
15649         int err;
15650
15651         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15652                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
15653                 return -EOPNOTSUPP;
15654
15655         if (!rdev->ops->tx_control_port)
15656                 return -EOPNOTSUPP;
15657
15658         if (!info->attrs[NL80211_ATTR_FRAME] ||
15659             !info->attrs[NL80211_ATTR_MAC] ||
15660             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
15661                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
15662                 return -EINVAL;
15663         }
15664
15665         switch (wdev->iftype) {
15666         case NL80211_IFTYPE_AP:
15667         case NL80211_IFTYPE_P2P_GO:
15668         case NL80211_IFTYPE_MESH_POINT:
15669                 break;
15670         case NL80211_IFTYPE_ADHOC:
15671                 if (wdev->u.ibss.current_bss)
15672                         break;
15673                 return -ENOTCONN;
15674         case NL80211_IFTYPE_STATION:
15675         case NL80211_IFTYPE_P2P_CLIENT:
15676                 if (wdev->connected)
15677                         break;
15678                 return -ENOTCONN;
15679         default:
15680                 return -EOPNOTSUPP;
15681         }
15682
15683         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15684         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15685         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15686         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
15687         noencrypt =
15688                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
15689
15690         link_id = nl80211_link_id_or_invalid(info->attrs);
15691
15692         err = rdev_tx_control_port(rdev, dev, buf, len,
15693                                    dest, cpu_to_be16(proto), noencrypt, link_id,
15694                                    dont_wait_for_ack ? NULL : &cookie);
15695         if (!err && !dont_wait_for_ack)
15696                 nl_set_extack_cookie_u64(info->extack, cookie);
15697         return err;
15698 }
15699
15700 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
15701                                            struct genl_info *info)
15702 {
15703         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15704         struct net_device *dev = info->user_ptr[1];
15705         struct wireless_dev *wdev = dev->ieee80211_ptr;
15706         struct cfg80211_ftm_responder_stats ftm_stats = {};
15707         unsigned int link_id = nl80211_link_id(info->attrs);
15708         struct sk_buff *msg;
15709         void *hdr;
15710         struct nlattr *ftm_stats_attr;
15711         int err;
15712
15713         if (wdev->iftype != NL80211_IFTYPE_AP ||
15714             !wdev->links[link_id].ap.beacon_interval)
15715                 return -EOPNOTSUPP;
15716
15717         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
15718         if (err)
15719                 return err;
15720
15721         if (!ftm_stats.filled)
15722                 return -ENODATA;
15723
15724         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15725         if (!msg)
15726                 return -ENOMEM;
15727
15728         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
15729                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
15730         if (!hdr)
15731                 goto nla_put_failure;
15732
15733         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15734                 goto nla_put_failure;
15735
15736         ftm_stats_attr = nla_nest_start_noflag(msg,
15737                                                NL80211_ATTR_FTM_RESPONDER_STATS);
15738         if (!ftm_stats_attr)
15739                 goto nla_put_failure;
15740
15741 #define SET_FTM(field, name, type)                                       \
15742         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15743             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
15744                              ftm_stats.field))                           \
15745                 goto nla_put_failure; } while (0)
15746 #define SET_FTM_U64(field, name)                                         \
15747         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15748             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
15749                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
15750                 goto nla_put_failure; } while (0)
15751
15752         SET_FTM(success_num, SUCCESS_NUM, u32);
15753         SET_FTM(partial_num, PARTIAL_NUM, u32);
15754         SET_FTM(failed_num, FAILED_NUM, u32);
15755         SET_FTM(asap_num, ASAP_NUM, u32);
15756         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
15757         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
15758         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
15759         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
15760         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
15761 #undef SET_FTM
15762
15763         nla_nest_end(msg, ftm_stats_attr);
15764
15765         genlmsg_end(msg, hdr);
15766         return genlmsg_reply(msg, info);
15767
15768 nla_put_failure:
15769         nlmsg_free(msg);
15770         return -ENOBUFS;
15771 }
15772
15773 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
15774 {
15775         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15776         struct cfg80211_update_owe_info owe_info;
15777         struct net_device *dev = info->user_ptr[1];
15778
15779         if (!rdev->ops->update_owe_info)
15780                 return -EOPNOTSUPP;
15781
15782         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
15783             !info->attrs[NL80211_ATTR_MAC])
15784                 return -EINVAL;
15785
15786         memset(&owe_info, 0, sizeof(owe_info));
15787         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15788         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
15789
15790         if (info->attrs[NL80211_ATTR_IE]) {
15791                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
15792                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
15793         }
15794
15795         return rdev_update_owe_info(rdev, dev, &owe_info);
15796 }
15797
15798 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
15799 {
15800         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15801         struct net_device *dev = info->user_ptr[1];
15802         struct wireless_dev *wdev = dev->ieee80211_ptr;
15803         struct station_info sinfo = {};
15804         const u8 *buf;
15805         size_t len;
15806         u8 *dest;
15807         int err;
15808
15809         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
15810                 return -EOPNOTSUPP;
15811
15812         if (!info->attrs[NL80211_ATTR_MAC] ||
15813             !info->attrs[NL80211_ATTR_FRAME]) {
15814                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
15815                 return -EINVAL;
15816         }
15817
15818         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
15819                 return -EOPNOTSUPP;
15820
15821         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15822         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15823         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15824
15825         if (len < sizeof(struct ethhdr))
15826                 return -EINVAL;
15827
15828         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
15829             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
15830                 return -EINVAL;
15831
15832         err = rdev_get_station(rdev, dev, dest, &sinfo);
15833         if (err)
15834                 return err;
15835
15836         cfg80211_sinfo_release_content(&sinfo);
15837
15838         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
15839 }
15840
15841 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
15842                           struct nlattr *attrs[], struct net_device *dev,
15843                           struct cfg80211_tid_cfg *tid_conf,
15844                           struct genl_info *info, const u8 *peer,
15845                           unsigned int link_id)
15846 {
15847         struct netlink_ext_ack *extack = info->extack;
15848         u64 mask;
15849         int err;
15850
15851         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
15852                 return -EINVAL;
15853
15854         tid_conf->config_override =
15855                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
15856         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
15857
15858         if (tid_conf->config_override) {
15859                 if (rdev->ops->reset_tid_config) {
15860                         err = rdev_reset_tid_config(rdev, dev, peer,
15861                                                     tid_conf->tids);
15862                         if (err)
15863                                 return err;
15864                 } else {
15865                         return -EINVAL;
15866                 }
15867         }
15868
15869         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
15870                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
15871                 tid_conf->noack =
15872                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
15873         }
15874
15875         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
15876                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
15877                 tid_conf->retry_short =
15878                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
15879
15880                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
15881                         return -EINVAL;
15882         }
15883
15884         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
15885                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
15886                 tid_conf->retry_long =
15887                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
15888
15889                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
15890                         return -EINVAL;
15891         }
15892
15893         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
15894                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
15895                 tid_conf->ampdu =
15896                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
15897         }
15898
15899         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
15900                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
15901                 tid_conf->rtscts =
15902                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
15903         }
15904
15905         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
15906                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
15907                 tid_conf->amsdu =
15908                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
15909         }
15910
15911         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
15912                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
15913
15914                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
15915
15916                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
15917                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
15918                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
15919                                                     &tid_conf->txrate_mask, dev,
15920                                                     true, link_id);
15921                         if (err)
15922                                 return err;
15923
15924                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
15925                 }
15926                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
15927         }
15928
15929         if (peer)
15930                 mask = rdev->wiphy.tid_config_support.peer;
15931         else
15932                 mask = rdev->wiphy.tid_config_support.vif;
15933
15934         if (tid_conf->mask & ~mask) {
15935                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
15936                 return -EOPNOTSUPP;
15937         }
15938
15939         return 0;
15940 }
15941
15942 static int nl80211_set_tid_config(struct sk_buff *skb,
15943                                   struct genl_info *info)
15944 {
15945         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15946         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
15947         unsigned int link_id = nl80211_link_id(info->attrs);
15948         struct net_device *dev = info->user_ptr[1];
15949         struct cfg80211_tid_config *tid_config;
15950         struct nlattr *tid;
15951         int conf_idx = 0, rem_conf;
15952         int ret = -EINVAL;
15953         u32 num_conf = 0;
15954
15955         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
15956                 return -EINVAL;
15957
15958         if (!rdev->ops->set_tid_config)
15959                 return -EOPNOTSUPP;
15960
15961         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15962                             rem_conf)
15963                 num_conf++;
15964
15965         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
15966                              GFP_KERNEL);
15967         if (!tid_config)
15968                 return -ENOMEM;
15969
15970         tid_config->n_tid_conf = num_conf;
15971
15972         if (info->attrs[NL80211_ATTR_MAC])
15973                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15974
15975         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15976                             rem_conf) {
15977                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
15978                                        tid, NULL, NULL);
15979
15980                 if (ret)
15981                         goto bad_tid_conf;
15982
15983                 ret = parse_tid_conf(rdev, attrs, dev,
15984                                      &tid_config->tid_conf[conf_idx],
15985                                      info, tid_config->peer, link_id);
15986                 if (ret)
15987                         goto bad_tid_conf;
15988
15989                 conf_idx++;
15990         }
15991
15992         ret = rdev_set_tid_config(rdev, dev, tid_config);
15993
15994 bad_tid_conf:
15995         kfree(tid_config);
15996         return ret;
15997 }
15998
15999 static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
16000 {
16001         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16002         struct cfg80211_color_change_settings params = {};
16003         struct net_device *dev = info->user_ptr[1];
16004         struct wireless_dev *wdev = dev->ieee80211_ptr;
16005         struct nlattr **tb;
16006         u16 offset;
16007         int err;
16008
16009         if (!rdev->ops->color_change)
16010                 return -EOPNOTSUPP;
16011
16012         if (!wiphy_ext_feature_isset(&rdev->wiphy,
16013                                      NL80211_EXT_FEATURE_BSS_COLOR))
16014                 return -EOPNOTSUPP;
16015
16016         if (wdev->iftype != NL80211_IFTYPE_AP)
16017                 return -EOPNOTSUPP;
16018
16019         if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
16020             !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
16021             !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
16022                 return -EINVAL;
16023
16024         params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
16025         params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
16026
16027         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_next,
16028                                    info->extack);
16029         if (err)
16030                 return err;
16031
16032         tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
16033         if (!tb)
16034                 return -ENOMEM;
16035
16036         err = nla_parse_nested(tb, NL80211_ATTR_MAX,
16037                                info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
16038                                nl80211_policy, info->extack);
16039         if (err)
16040                 goto out;
16041
16042         err = nl80211_parse_beacon(rdev, tb, &params.beacon_color_change,
16043                                    info->extack);
16044         if (err)
16045                 goto out;
16046
16047         if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
16048                 err = -EINVAL;
16049                 goto out;
16050         }
16051
16052         if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
16053                 err = -EINVAL;
16054                 goto out;
16055         }
16056
16057         offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
16058         if (offset >= params.beacon_color_change.tail_len) {
16059                 err = -EINVAL;
16060                 goto out;
16061         }
16062
16063         if (params.beacon_color_change.tail[offset] != params.count) {
16064                 err = -EINVAL;
16065                 goto out;
16066         }
16067
16068         params.counter_offset_beacon = offset;
16069
16070         if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
16071                 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
16072                     sizeof(u16)) {
16073                         err = -EINVAL;
16074                         goto out;
16075                 }
16076
16077                 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
16078                 if (offset >= params.beacon_color_change.probe_resp_len) {
16079                         err = -EINVAL;
16080                         goto out;
16081                 }
16082
16083                 if (params.beacon_color_change.probe_resp[offset] !=
16084                     params.count) {
16085                         err = -EINVAL;
16086                         goto out;
16087                 }
16088
16089                 params.counter_offset_presp = offset;
16090         }
16091
16092         err = rdev_color_change(rdev, dev, &params);
16093
16094 out:
16095         kfree(params.beacon_next.mbssid_ies);
16096         kfree(params.beacon_color_change.mbssid_ies);
16097         kfree(params.beacon_next.rnr_ies);
16098         kfree(params.beacon_color_change.rnr_ies);
16099         kfree(tb);
16100         return err;
16101 }
16102
16103 static int nl80211_set_fils_aad(struct sk_buff *skb,
16104                                 struct genl_info *info)
16105 {
16106         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16107         struct net_device *dev = info->user_ptr[1];
16108         struct cfg80211_fils_aad fils_aad = {};
16109         u8 *nonces;
16110
16111         if (!info->attrs[NL80211_ATTR_MAC] ||
16112             !info->attrs[NL80211_ATTR_FILS_KEK] ||
16113             !info->attrs[NL80211_ATTR_FILS_NONCES])
16114                 return -EINVAL;
16115
16116         fils_aad.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
16117         fils_aad.kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
16118         fils_aad.kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
16119         nonces = nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
16120         fils_aad.snonce = nonces;
16121         fils_aad.anonce = nonces + FILS_NONCE_LEN;
16122
16123         return rdev_set_fils_aad(rdev, dev, &fils_aad);
16124 }
16125
16126 static int nl80211_add_link(struct sk_buff *skb, struct genl_info *info)
16127 {
16128         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16129         unsigned int link_id = nl80211_link_id(info->attrs);
16130         struct net_device *dev = info->user_ptr[1];
16131         struct wireless_dev *wdev = dev->ieee80211_ptr;
16132         int ret;
16133
16134         if (!(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
16135                 return -EINVAL;
16136
16137         switch (wdev->iftype) {
16138         case NL80211_IFTYPE_AP:
16139                 break;
16140         default:
16141                 return -EINVAL;
16142         }
16143
16144         if (!info->attrs[NL80211_ATTR_MAC] ||
16145             !is_valid_ether_addr(nla_data(info->attrs[NL80211_ATTR_MAC])))
16146                 return -EINVAL;
16147
16148         wdev->valid_links |= BIT(link_id);
16149         ether_addr_copy(wdev->links[link_id].addr,
16150                         nla_data(info->attrs[NL80211_ATTR_MAC]));
16151
16152         ret = rdev_add_intf_link(rdev, wdev, link_id);
16153         if (ret) {
16154                 wdev->valid_links &= ~BIT(link_id);
16155                 eth_zero_addr(wdev->links[link_id].addr);
16156         }
16157
16158         return ret;
16159 }
16160
16161 static int nl80211_remove_link(struct sk_buff *skb, struct genl_info *info)
16162 {
16163         unsigned int link_id = nl80211_link_id(info->attrs);
16164         struct net_device *dev = info->user_ptr[1];
16165         struct wireless_dev *wdev = dev->ieee80211_ptr;
16166
16167         /* cannot remove if there's no link */
16168         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16169                 return -EINVAL;
16170
16171         switch (wdev->iftype) {
16172         case NL80211_IFTYPE_AP:
16173                 break;
16174         default:
16175                 return -EINVAL;
16176         }
16177
16178         cfg80211_remove_link(wdev, link_id);
16179
16180         return 0;
16181 }
16182
16183 static int
16184 nl80211_add_mod_link_station(struct sk_buff *skb, struct genl_info *info,
16185                              bool add)
16186 {
16187         struct link_station_parameters params = {};
16188         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16189         struct net_device *dev = info->user_ptr[1];
16190         int err;
16191
16192         if ((add && !rdev->ops->add_link_station) ||
16193             (!add && !rdev->ops->mod_link_station))
16194                 return -EOPNOTSUPP;
16195
16196         if (add && !info->attrs[NL80211_ATTR_MAC])
16197                 return -EINVAL;
16198
16199         if (!info->attrs[NL80211_ATTR_MLD_ADDR])
16200                 return -EINVAL;
16201
16202         if (add && !info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
16203                 return -EINVAL;
16204
16205         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16206
16207         if (info->attrs[NL80211_ATTR_MAC]) {
16208                 params.link_mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
16209                 if (!is_valid_ether_addr(params.link_mac))
16210                         return -EINVAL;
16211         }
16212
16213         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16214                 return -EINVAL;
16215
16216         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16217
16218         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
16219                 params.supported_rates =
16220                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16221                 params.supported_rates_len =
16222                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16223         }
16224
16225         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
16226                 params.ht_capa =
16227                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
16228
16229         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
16230                 params.vht_capa =
16231                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
16232
16233         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
16234                 params.he_capa =
16235                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16236                 params.he_capa_len =
16237                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16238
16239                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
16240                         params.eht_capa =
16241                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16242                         params.eht_capa_len =
16243                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16244
16245                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa,
16246                                                         (const u8 *)params.eht_capa,
16247                                                         params.eht_capa_len,
16248                                                         false))
16249                                 return -EINVAL;
16250                 }
16251         }
16252
16253         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
16254                 params.he_6ghz_capa =
16255                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
16256
16257         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
16258                 params.opmode_notif_used = true;
16259                 params.opmode_notif =
16260                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
16261         }
16262
16263         err = nl80211_parse_sta_txpower_setting(info, &params.txpwr,
16264                                                 &params.txpwr_set);
16265         if (err)
16266                 return err;
16267
16268         if (add)
16269                 return rdev_add_link_station(rdev, dev, &params);
16270
16271         return rdev_mod_link_station(rdev, dev, &params);
16272 }
16273
16274 static int
16275 nl80211_add_link_station(struct sk_buff *skb, struct genl_info *info)
16276 {
16277         return nl80211_add_mod_link_station(skb, info, true);
16278 }
16279
16280 static int
16281 nl80211_modify_link_station(struct sk_buff *skb, struct genl_info *info)
16282 {
16283         return nl80211_add_mod_link_station(skb, info, false);
16284 }
16285
16286 static int
16287 nl80211_remove_link_station(struct sk_buff *skb, struct genl_info *info)
16288 {
16289         struct link_station_del_parameters params = {};
16290         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16291         struct net_device *dev = info->user_ptr[1];
16292
16293         if (!rdev->ops->del_link_station)
16294                 return -EOPNOTSUPP;
16295
16296         if (!info->attrs[NL80211_ATTR_MLD_ADDR] ||
16297             !info->attrs[NL80211_ATTR_MLO_LINK_ID])
16298                 return -EINVAL;
16299
16300         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16301         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16302
16303         return rdev_del_link_station(rdev, dev, &params);
16304 }
16305
16306 static int nl80211_set_hw_timestamp(struct sk_buff *skb,
16307                                     struct genl_info *info)
16308 {
16309         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16310         struct net_device *dev = info->user_ptr[1];
16311         struct cfg80211_set_hw_timestamp hwts = {};
16312
16313         if (!rdev->wiphy.hw_timestamp_max_peers)
16314                 return -EOPNOTSUPP;
16315
16316         if (!info->attrs[NL80211_ATTR_MAC] &&
16317             rdev->wiphy.hw_timestamp_max_peers != CFG80211_HW_TIMESTAMP_ALL_PEERS)
16318                 return -EOPNOTSUPP;
16319
16320         if (info->attrs[NL80211_ATTR_MAC])
16321                 hwts.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
16322
16323         hwts.enable =
16324                 nla_get_flag(info->attrs[NL80211_ATTR_HW_TIMESTAMP_ENABLED]);
16325
16326         return rdev_set_hw_timestamp(rdev, dev, &hwts);
16327 }
16328
16329 static int
16330 nl80211_set_ttlm(struct sk_buff *skb, struct genl_info *info)
16331 {
16332         struct cfg80211_ttlm_params params = {};
16333         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16334         struct net_device *dev = info->user_ptr[1];
16335         struct wireless_dev *wdev = dev->ieee80211_ptr;
16336
16337         if (wdev->iftype != NL80211_IFTYPE_STATION &&
16338             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
16339                 return -EOPNOTSUPP;
16340
16341         if (!wdev->connected)
16342                 return -ENOLINK;
16343
16344         if (!info->attrs[NL80211_ATTR_MLO_TTLM_DLINK] ||
16345             !info->attrs[NL80211_ATTR_MLO_TTLM_ULINK])
16346                 return -EINVAL;
16347
16348         nla_memcpy(params.dlink,
16349                    info->attrs[NL80211_ATTR_MLO_TTLM_DLINK],
16350                    sizeof(params.dlink));
16351         nla_memcpy(params.ulink,
16352                    info->attrs[NL80211_ATTR_MLO_TTLM_ULINK],
16353                    sizeof(params.ulink));
16354
16355         return rdev_set_ttlm(rdev, dev, &params);
16356 }
16357
16358 #define NL80211_FLAG_NEED_WIPHY         0x01
16359 #define NL80211_FLAG_NEED_NETDEV        0x02
16360 #define NL80211_FLAG_NEED_RTNL          0x04
16361 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
16362 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
16363                                          NL80211_FLAG_CHECK_NETDEV_UP)
16364 #define NL80211_FLAG_NEED_WDEV          0x10
16365 /* If a netdev is associated, it must be UP, P2P must be started */
16366 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
16367                                          NL80211_FLAG_CHECK_NETDEV_UP)
16368 #define NL80211_FLAG_CLEAR_SKB          0x20
16369 #define NL80211_FLAG_NO_WIPHY_MTX       0x40
16370 #define NL80211_FLAG_MLO_VALID_LINK_ID  0x80
16371 #define NL80211_FLAG_MLO_UNSUPPORTED    0x100
16372
16373 #define INTERNAL_FLAG_SELECTORS(__sel)                  \
16374         SELECTOR(__sel, NONE, 0) /* must be first */    \
16375         SELECTOR(__sel, WIPHY,                          \
16376                  NL80211_FLAG_NEED_WIPHY)               \
16377         SELECTOR(__sel, WDEV,                           \
16378                  NL80211_FLAG_NEED_WDEV)                \
16379         SELECTOR(__sel, NETDEV,                         \
16380                  NL80211_FLAG_NEED_NETDEV)              \
16381         SELECTOR(__sel, NETDEV_LINK,                    \
16382                  NL80211_FLAG_NEED_NETDEV |             \
16383                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16384         SELECTOR(__sel, NETDEV_NO_MLO,                  \
16385                  NL80211_FLAG_NEED_NETDEV |             \
16386                  NL80211_FLAG_MLO_UNSUPPORTED)  \
16387         SELECTOR(__sel, WIPHY_RTNL,                     \
16388                  NL80211_FLAG_NEED_WIPHY |              \
16389                  NL80211_FLAG_NEED_RTNL)                \
16390         SELECTOR(__sel, WIPHY_RTNL_NOMTX,               \
16391                  NL80211_FLAG_NEED_WIPHY |              \
16392                  NL80211_FLAG_NEED_RTNL |               \
16393                  NL80211_FLAG_NO_WIPHY_MTX)             \
16394         SELECTOR(__sel, WDEV_RTNL,                      \
16395                  NL80211_FLAG_NEED_WDEV |               \
16396                  NL80211_FLAG_NEED_RTNL)                \
16397         SELECTOR(__sel, NETDEV_RTNL,                    \
16398                  NL80211_FLAG_NEED_NETDEV |             \
16399                  NL80211_FLAG_NEED_RTNL)                \
16400         SELECTOR(__sel, NETDEV_UP,                      \
16401                  NL80211_FLAG_NEED_NETDEV_UP)           \
16402         SELECTOR(__sel, NETDEV_UP_LINK,                 \
16403                  NL80211_FLAG_NEED_NETDEV_UP |          \
16404                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16405         SELECTOR(__sel, NETDEV_UP_NO_MLO,               \
16406                  NL80211_FLAG_NEED_NETDEV_UP |          \
16407                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16408         SELECTOR(__sel, NETDEV_UP_NO_MLO_CLEAR,         \
16409                  NL80211_FLAG_NEED_NETDEV_UP |          \
16410                  NL80211_FLAG_CLEAR_SKB |               \
16411                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16412         SELECTOR(__sel, NETDEV_UP_NOTMX,                \
16413                  NL80211_FLAG_NEED_NETDEV_UP |          \
16414                  NL80211_FLAG_NO_WIPHY_MTX)             \
16415         SELECTOR(__sel, NETDEV_UP_NOTMX_NOMLO,          \
16416                  NL80211_FLAG_NEED_NETDEV_UP |          \
16417                  NL80211_FLAG_NO_WIPHY_MTX |            \
16418                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16419         SELECTOR(__sel, NETDEV_UP_CLEAR,                \
16420                  NL80211_FLAG_NEED_NETDEV_UP |          \
16421                  NL80211_FLAG_CLEAR_SKB)                \
16422         SELECTOR(__sel, WDEV_UP,                        \
16423                  NL80211_FLAG_NEED_WDEV_UP)             \
16424         SELECTOR(__sel, WDEV_UP_LINK,                   \
16425                  NL80211_FLAG_NEED_WDEV_UP |            \
16426                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16427         SELECTOR(__sel, WDEV_UP_RTNL,                   \
16428                  NL80211_FLAG_NEED_WDEV_UP |            \
16429                  NL80211_FLAG_NEED_RTNL)                \
16430         SELECTOR(__sel, WIPHY_CLEAR,                    \
16431                  NL80211_FLAG_NEED_WIPHY |              \
16432                  NL80211_FLAG_CLEAR_SKB)
16433
16434 enum nl80211_internal_flags_selector {
16435 #define SELECTOR(_, name, value)        NL80211_IFL_SEL_##name,
16436         INTERNAL_FLAG_SELECTORS(_)
16437 #undef SELECTOR
16438 };
16439
16440 static u32 nl80211_internal_flags[] = {
16441 #define SELECTOR(_, name, value)        [NL80211_IFL_SEL_##name] = value,
16442         INTERNAL_FLAG_SELECTORS(_)
16443 #undef SELECTOR
16444 };
16445
16446 static int nl80211_pre_doit(const struct genl_split_ops *ops,
16447                             struct sk_buff *skb,
16448                             struct genl_info *info)
16449 {
16450         struct cfg80211_registered_device *rdev = NULL;
16451         struct wireless_dev *wdev = NULL;
16452         struct net_device *dev = NULL;
16453         u32 internal_flags;
16454         int err;
16455
16456         if (WARN_ON(ops->internal_flags >= ARRAY_SIZE(nl80211_internal_flags)))
16457                 return -EINVAL;
16458
16459         internal_flags = nl80211_internal_flags[ops->internal_flags];
16460
16461         rtnl_lock();
16462         if (internal_flags & NL80211_FLAG_NEED_WIPHY) {
16463                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
16464                 if (IS_ERR(rdev)) {
16465                         err = PTR_ERR(rdev);
16466                         goto out_unlock;
16467                 }
16468                 info->user_ptr[0] = rdev;
16469         } else if (internal_flags & NL80211_FLAG_NEED_NETDEV ||
16470                    internal_flags & NL80211_FLAG_NEED_WDEV) {
16471                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
16472                                                   info->attrs);
16473                 if (IS_ERR(wdev)) {
16474                         err = PTR_ERR(wdev);
16475                         goto out_unlock;
16476                 }
16477
16478                 dev = wdev->netdev;
16479                 dev_hold(dev);
16480                 rdev = wiphy_to_rdev(wdev->wiphy);
16481
16482                 if (internal_flags & NL80211_FLAG_NEED_NETDEV) {
16483                         if (!dev) {
16484                                 err = -EINVAL;
16485                                 goto out_unlock;
16486                         }
16487
16488                         info->user_ptr[1] = dev;
16489                 } else {
16490                         info->user_ptr[1] = wdev;
16491                 }
16492
16493                 if (internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
16494                     !wdev_running(wdev)) {
16495                         err = -ENETDOWN;
16496                         goto out_unlock;
16497                 }
16498
16499                 info->user_ptr[0] = rdev;
16500         }
16501
16502         if (internal_flags & NL80211_FLAG_MLO_VALID_LINK_ID) {
16503                 struct nlattr *link_id = info->attrs[NL80211_ATTR_MLO_LINK_ID];
16504
16505                 if (!wdev) {
16506                         err = -EINVAL;
16507                         goto out_unlock;
16508                 }
16509
16510                 /* MLO -> require valid link ID */
16511                 if (wdev->valid_links &&
16512                     (!link_id ||
16513                      !(wdev->valid_links & BIT(nla_get_u8(link_id))))) {
16514                         err = -EINVAL;
16515                         goto out_unlock;
16516                 }
16517
16518                 /* non-MLO -> no link ID attribute accepted */
16519                 if (!wdev->valid_links && link_id) {
16520                         err = -EINVAL;
16521                         goto out_unlock;
16522                 }
16523         }
16524
16525         if (internal_flags & NL80211_FLAG_MLO_UNSUPPORTED) {
16526                 if (info->attrs[NL80211_ATTR_MLO_LINK_ID] ||
16527                     (wdev && wdev->valid_links)) {
16528                         err = -EINVAL;
16529                         goto out_unlock;
16530                 }
16531         }
16532
16533         if (rdev && !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16534                 wiphy_lock(&rdev->wiphy);
16535                 /* we keep the mutex locked until post_doit */
16536                 __release(&rdev->wiphy.mtx);
16537         }
16538         if (!(internal_flags & NL80211_FLAG_NEED_RTNL))
16539                 rtnl_unlock();
16540
16541         return 0;
16542 out_unlock:
16543         rtnl_unlock();
16544         dev_put(dev);
16545         return err;
16546 }
16547
16548 static void nl80211_post_doit(const struct genl_split_ops *ops,
16549                               struct sk_buff *skb,
16550                               struct genl_info *info)
16551 {
16552         u32 internal_flags = nl80211_internal_flags[ops->internal_flags];
16553
16554         if (info->user_ptr[1]) {
16555                 if (internal_flags & NL80211_FLAG_NEED_WDEV) {
16556                         struct wireless_dev *wdev = info->user_ptr[1];
16557
16558                         dev_put(wdev->netdev);
16559                 } else {
16560                         dev_put(info->user_ptr[1]);
16561                 }
16562         }
16563
16564         if (info->user_ptr[0] &&
16565             !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16566                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16567
16568                 /* we kept the mutex locked since pre_doit */
16569                 __acquire(&rdev->wiphy.mtx);
16570                 wiphy_unlock(&rdev->wiphy);
16571         }
16572
16573         if (internal_flags & NL80211_FLAG_NEED_RTNL)
16574                 rtnl_unlock();
16575
16576         /* If needed, clear the netlink message payload from the SKB
16577          * as it might contain key data that shouldn't stick around on
16578          * the heap after the SKB is freed. The netlink message header
16579          * is still needed for further processing, so leave it intact.
16580          */
16581         if (internal_flags & NL80211_FLAG_CLEAR_SKB) {
16582                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
16583
16584                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
16585         }
16586 }
16587
16588 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
16589                                      struct cfg80211_sar_specs *sar_specs,
16590                                      struct nlattr *spec[], int index)
16591 {
16592         u32 range_index, i;
16593
16594         if (!sar_specs || !spec)
16595                 return -EINVAL;
16596
16597         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
16598             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
16599                 return -EINVAL;
16600
16601         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
16602
16603         /* check if range_index exceeds num_freq_ranges */
16604         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
16605                 return -EINVAL;
16606
16607         /* check if range_index duplicates */
16608         for (i = 0; i < index; i++) {
16609                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
16610                         return -EINVAL;
16611         }
16612
16613         sar_specs->sub_specs[index].power =
16614                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
16615
16616         sar_specs->sub_specs[index].freq_range_index = range_index;
16617
16618         return 0;
16619 }
16620
16621 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
16622 {
16623         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16624         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
16625         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
16626         struct cfg80211_sar_specs *sar_spec;
16627         enum nl80211_sar_type type;
16628         struct nlattr *spec_list;
16629         u32 specs;
16630         int rem, err;
16631
16632         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
16633                 return -EOPNOTSUPP;
16634
16635         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
16636                 return -EINVAL;
16637
16638         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
16639                          info->attrs[NL80211_ATTR_SAR_SPEC],
16640                          NULL, NULL);
16641
16642         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
16643                 return -EINVAL;
16644
16645         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
16646         if (type != rdev->wiphy.sar_capa->type)
16647                 return -EINVAL;
16648
16649         specs = 0;
16650         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
16651                 specs++;
16652
16653         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
16654                 return -EINVAL;
16655
16656         sar_spec = kzalloc(struct_size(sar_spec, sub_specs, specs), GFP_KERNEL);
16657         if (!sar_spec)
16658                 return -ENOMEM;
16659
16660         sar_spec->type = type;
16661         specs = 0;
16662         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
16663                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
16664                                  spec_list, NULL, NULL);
16665
16666                 switch (type) {
16667                 case NL80211_SAR_TYPE_POWER:
16668                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
16669                                                       spec, specs)) {
16670                                 err = -EINVAL;
16671                                 goto error;
16672                         }
16673                         break;
16674                 default:
16675                         err = -EINVAL;
16676                         goto error;
16677                 }
16678                 specs++;
16679         }
16680
16681         sar_spec->num_sub_specs = specs;
16682
16683         rdev->cur_cmd_info = info;
16684         err = rdev_set_sar_specs(rdev, sar_spec);
16685         rdev->cur_cmd_info = NULL;
16686 error:
16687         kfree(sar_spec);
16688         return err;
16689 }
16690
16691 #define SELECTOR(__sel, name, value) \
16692         ((__sel) == (value)) ? NL80211_IFL_SEL_##name :
16693 int __missing_selector(void);
16694 #define IFLAGS(__val) INTERNAL_FLAG_SELECTORS(__val) __missing_selector()
16695
16696 static const struct genl_ops nl80211_ops[] = {
16697         {
16698                 .cmd = NL80211_CMD_GET_WIPHY,
16699                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16700                 .doit = nl80211_get_wiphy,
16701                 .dumpit = nl80211_dump_wiphy,
16702                 .done = nl80211_dump_wiphy_done,
16703                 /* can be retrieved by unprivileged users */
16704                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16705         },
16706 };
16707
16708 static const struct genl_small_ops nl80211_small_ops[] = {
16709         {
16710                 .cmd = NL80211_CMD_SET_WIPHY,
16711                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16712                 .doit = nl80211_set_wiphy,
16713                 .flags = GENL_UNS_ADMIN_PERM,
16714         },
16715         {
16716                 .cmd = NL80211_CMD_GET_INTERFACE,
16717                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16718                 .doit = nl80211_get_interface,
16719                 .dumpit = nl80211_dump_interface,
16720                 /* can be retrieved by unprivileged users */
16721                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16722         },
16723         {
16724                 .cmd = NL80211_CMD_SET_INTERFACE,
16725                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16726                 .doit = nl80211_set_interface,
16727                 .flags = GENL_UNS_ADMIN_PERM,
16728                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16729                                          NL80211_FLAG_NEED_RTNL),
16730         },
16731         {
16732                 .cmd = NL80211_CMD_NEW_INTERFACE,
16733                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16734                 .doit = nl80211_new_interface,
16735                 .flags = GENL_UNS_ADMIN_PERM,
16736                 .internal_flags =
16737                         IFLAGS(NL80211_FLAG_NEED_WIPHY |
16738                                NL80211_FLAG_NEED_RTNL |
16739                                /* we take the wiphy mutex later ourselves */
16740                                NL80211_FLAG_NO_WIPHY_MTX),
16741         },
16742         {
16743                 .cmd = NL80211_CMD_DEL_INTERFACE,
16744                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16745                 .doit = nl80211_del_interface,
16746                 .flags = GENL_UNS_ADMIN_PERM,
16747                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16748                                          NL80211_FLAG_NEED_RTNL),
16749         },
16750         {
16751                 .cmd = NL80211_CMD_GET_KEY,
16752                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16753                 .doit = nl80211_get_key,
16754                 .flags = GENL_UNS_ADMIN_PERM,
16755                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16756         },
16757         {
16758                 .cmd = NL80211_CMD_SET_KEY,
16759                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16760                 .doit = nl80211_set_key,
16761                 .flags = GENL_UNS_ADMIN_PERM,
16762                 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on key */
16763                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16764                                          NL80211_FLAG_CLEAR_SKB),
16765         },
16766         {
16767                 .cmd = NL80211_CMD_NEW_KEY,
16768                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16769                 .doit = nl80211_new_key,
16770                 .flags = GENL_UNS_ADMIN_PERM,
16771                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16772                                          NL80211_FLAG_CLEAR_SKB),
16773         },
16774         {
16775                 .cmd = NL80211_CMD_DEL_KEY,
16776                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16777                 .doit = nl80211_del_key,
16778                 .flags = GENL_UNS_ADMIN_PERM,
16779                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16780         },
16781         {
16782                 .cmd = NL80211_CMD_SET_BEACON,
16783                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16784                 .flags = GENL_UNS_ADMIN_PERM,
16785                 .doit = nl80211_set_beacon,
16786                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16787                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16788         },
16789         {
16790                 .cmd = NL80211_CMD_START_AP,
16791                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16792                 .flags = GENL_UNS_ADMIN_PERM,
16793                 .doit = nl80211_start_ap,
16794                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16795                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16796         },
16797         {
16798                 .cmd = NL80211_CMD_STOP_AP,
16799                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16800                 .flags = GENL_UNS_ADMIN_PERM,
16801                 .doit = nl80211_stop_ap,
16802                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16803                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16804         },
16805         {
16806                 .cmd = NL80211_CMD_GET_STATION,
16807                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16808                 .doit = nl80211_get_station,
16809                 .dumpit = nl80211_dump_station,
16810                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16811         },
16812         {
16813                 .cmd = NL80211_CMD_SET_STATION,
16814                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16815                 .doit = nl80211_set_station,
16816                 .flags = GENL_UNS_ADMIN_PERM,
16817                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16818         },
16819         {
16820                 .cmd = NL80211_CMD_NEW_STATION,
16821                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16822                 .doit = nl80211_new_station,
16823                 .flags = GENL_UNS_ADMIN_PERM,
16824                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16825         },
16826         {
16827                 .cmd = NL80211_CMD_DEL_STATION,
16828                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16829                 .doit = nl80211_del_station,
16830                 .flags = GENL_UNS_ADMIN_PERM,
16831                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16832         },
16833         {
16834                 .cmd = NL80211_CMD_GET_MPATH,
16835                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16836                 .doit = nl80211_get_mpath,
16837                 .dumpit = nl80211_dump_mpath,
16838                 .flags = GENL_UNS_ADMIN_PERM,
16839                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16840         },
16841         {
16842                 .cmd = NL80211_CMD_GET_MPP,
16843                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16844                 .doit = nl80211_get_mpp,
16845                 .dumpit = nl80211_dump_mpp,
16846                 .flags = GENL_UNS_ADMIN_PERM,
16847                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16848         },
16849         {
16850                 .cmd = NL80211_CMD_SET_MPATH,
16851                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16852                 .doit = nl80211_set_mpath,
16853                 .flags = GENL_UNS_ADMIN_PERM,
16854                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16855         },
16856         {
16857                 .cmd = NL80211_CMD_NEW_MPATH,
16858                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16859                 .doit = nl80211_new_mpath,
16860                 .flags = GENL_UNS_ADMIN_PERM,
16861                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16862         },
16863         {
16864                 .cmd = NL80211_CMD_DEL_MPATH,
16865                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16866                 .doit = nl80211_del_mpath,
16867                 .flags = GENL_UNS_ADMIN_PERM,
16868                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16869         },
16870         {
16871                 .cmd = NL80211_CMD_SET_BSS,
16872                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16873                 .doit = nl80211_set_bss,
16874                 .flags = GENL_UNS_ADMIN_PERM,
16875                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16876                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16877         },
16878         {
16879                 .cmd = NL80211_CMD_GET_REG,
16880                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16881                 .doit = nl80211_get_reg_do,
16882                 .dumpit = nl80211_get_reg_dump,
16883                 /* can be retrieved by unprivileged users */
16884         },
16885 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
16886         {
16887                 .cmd = NL80211_CMD_SET_REG,
16888                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16889                 .doit = nl80211_set_reg,
16890                 .flags = GENL_ADMIN_PERM,
16891         },
16892 #endif
16893         {
16894                 .cmd = NL80211_CMD_REQ_SET_REG,
16895                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16896                 .doit = nl80211_req_set_reg,
16897                 .flags = GENL_ADMIN_PERM,
16898         },
16899         {
16900                 .cmd = NL80211_CMD_RELOAD_REGDB,
16901                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16902                 .doit = nl80211_reload_regdb,
16903                 .flags = GENL_ADMIN_PERM,
16904         },
16905         {
16906                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
16907                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16908                 .doit = nl80211_get_mesh_config,
16909                 /* can be retrieved by unprivileged users */
16910                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16911         },
16912         {
16913                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
16914                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16915                 .doit = nl80211_update_mesh_config,
16916                 .flags = GENL_UNS_ADMIN_PERM,
16917                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16918         },
16919         {
16920                 .cmd = NL80211_CMD_TRIGGER_SCAN,
16921                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16922                 .doit = nl80211_trigger_scan,
16923                 .flags = GENL_UNS_ADMIN_PERM,
16924                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16925         },
16926         {
16927                 .cmd = NL80211_CMD_ABORT_SCAN,
16928                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16929                 .doit = nl80211_abort_scan,
16930                 .flags = GENL_UNS_ADMIN_PERM,
16931                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16932         },
16933         {
16934                 .cmd = NL80211_CMD_GET_SCAN,
16935                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16936                 .dumpit = nl80211_dump_scan,
16937         },
16938         {
16939                 .cmd = NL80211_CMD_START_SCHED_SCAN,
16940                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16941                 .doit = nl80211_start_sched_scan,
16942                 .flags = GENL_UNS_ADMIN_PERM,
16943                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16944         },
16945         {
16946                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
16947                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16948                 .doit = nl80211_stop_sched_scan,
16949                 .flags = GENL_UNS_ADMIN_PERM,
16950                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16951         },
16952         {
16953                 .cmd = NL80211_CMD_AUTHENTICATE,
16954                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16955                 .doit = nl80211_authenticate,
16956                 .flags = GENL_UNS_ADMIN_PERM,
16957                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16958                                          NL80211_FLAG_CLEAR_SKB),
16959         },
16960         {
16961                 .cmd = NL80211_CMD_ASSOCIATE,
16962                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16963                 .doit = nl80211_associate,
16964                 .flags = GENL_UNS_ADMIN_PERM,
16965                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16966                                          NL80211_FLAG_CLEAR_SKB),
16967         },
16968         {
16969                 .cmd = NL80211_CMD_DEAUTHENTICATE,
16970                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16971                 .doit = nl80211_deauthenticate,
16972                 .flags = GENL_UNS_ADMIN_PERM,
16973                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16974         },
16975         {
16976                 .cmd = NL80211_CMD_DISASSOCIATE,
16977                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16978                 .doit = nl80211_disassociate,
16979                 .flags = GENL_UNS_ADMIN_PERM,
16980                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16981         },
16982         {
16983                 .cmd = NL80211_CMD_JOIN_IBSS,
16984                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16985                 .doit = nl80211_join_ibss,
16986                 .flags = GENL_UNS_ADMIN_PERM,
16987                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16988         },
16989         {
16990                 .cmd = NL80211_CMD_LEAVE_IBSS,
16991                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16992                 .doit = nl80211_leave_ibss,
16993                 .flags = GENL_UNS_ADMIN_PERM,
16994                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16995         },
16996 #ifdef CONFIG_NL80211_TESTMODE
16997         {
16998                 .cmd = NL80211_CMD_TESTMODE,
16999                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17000                 .doit = nl80211_testmode_do,
17001                 .dumpit = nl80211_testmode_dump,
17002                 .flags = GENL_UNS_ADMIN_PERM,
17003                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17004         },
17005 #endif
17006         {
17007                 .cmd = NL80211_CMD_CONNECT,
17008                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17009                 .doit = nl80211_connect,
17010                 .flags = GENL_UNS_ADMIN_PERM,
17011                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17012                                          NL80211_FLAG_CLEAR_SKB),
17013         },
17014         {
17015                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
17016                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17017                 .doit = nl80211_update_connect_params,
17018                 .flags = GENL_ADMIN_PERM,
17019                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17020                                          NL80211_FLAG_CLEAR_SKB),
17021         },
17022         {
17023                 .cmd = NL80211_CMD_DISCONNECT,
17024                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17025                 .doit = nl80211_disconnect,
17026                 .flags = GENL_UNS_ADMIN_PERM,
17027                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17028         },
17029         {
17030                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
17031                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17032                 .doit = nl80211_wiphy_netns,
17033                 .flags = GENL_UNS_ADMIN_PERM,
17034                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17035                                          NL80211_FLAG_NEED_RTNL |
17036                                          NL80211_FLAG_NO_WIPHY_MTX),
17037         },
17038         {
17039                 .cmd = NL80211_CMD_GET_SURVEY,
17040                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17041                 .dumpit = nl80211_dump_survey,
17042         },
17043         {
17044                 .cmd = NL80211_CMD_SET_PMKSA,
17045                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17046                 .doit = nl80211_set_pmksa,
17047                 .flags = GENL_UNS_ADMIN_PERM,
17048                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17049                                          NL80211_FLAG_CLEAR_SKB),
17050         },
17051         {
17052                 .cmd = NL80211_CMD_DEL_PMKSA,
17053                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17054                 .doit = nl80211_del_pmksa,
17055                 .flags = GENL_UNS_ADMIN_PERM,
17056                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17057         },
17058         {
17059                 .cmd = NL80211_CMD_FLUSH_PMKSA,
17060                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17061                 .doit = nl80211_flush_pmksa,
17062                 .flags = GENL_UNS_ADMIN_PERM,
17063                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17064         },
17065         {
17066                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
17067                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17068                 .doit = nl80211_remain_on_channel,
17069                 .flags = GENL_UNS_ADMIN_PERM,
17070                 /* FIXME: requiring a link ID here is probably not good */
17071                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17072                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17073         },
17074         {
17075                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
17076                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17077                 .doit = nl80211_cancel_remain_on_channel,
17078                 .flags = GENL_UNS_ADMIN_PERM,
17079                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17080         },
17081         {
17082                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
17083                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17084                 .doit = nl80211_set_tx_bitrate_mask,
17085                 .flags = GENL_UNS_ADMIN_PERM,
17086                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17087                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17088         },
17089         {
17090                 .cmd = NL80211_CMD_REGISTER_FRAME,
17091                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17092                 .doit = nl80211_register_mgmt,
17093                 .flags = GENL_UNS_ADMIN_PERM,
17094                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
17095         },
17096         {
17097                 .cmd = NL80211_CMD_FRAME,
17098                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17099                 .doit = nl80211_tx_mgmt,
17100                 .flags = GENL_UNS_ADMIN_PERM,
17101                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17102         },
17103         {
17104                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
17105                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17106                 .doit = nl80211_tx_mgmt_cancel_wait,
17107                 .flags = GENL_UNS_ADMIN_PERM,
17108                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17109         },
17110         {
17111                 .cmd = NL80211_CMD_SET_POWER_SAVE,
17112                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17113                 .doit = nl80211_set_power_save,
17114                 .flags = GENL_UNS_ADMIN_PERM,
17115                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17116         },
17117         {
17118                 .cmd = NL80211_CMD_GET_POWER_SAVE,
17119                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17120                 .doit = nl80211_get_power_save,
17121                 /* can be retrieved by unprivileged users */
17122                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17123         },
17124         {
17125                 .cmd = NL80211_CMD_SET_CQM,
17126                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17127                 .doit = nl80211_set_cqm,
17128                 .flags = GENL_UNS_ADMIN_PERM,
17129                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17130         },
17131         {
17132                 .cmd = NL80211_CMD_SET_CHANNEL,
17133                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17134                 .doit = nl80211_set_channel,
17135                 .flags = GENL_UNS_ADMIN_PERM,
17136                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17137                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17138         },
17139         {
17140                 .cmd = NL80211_CMD_JOIN_MESH,
17141                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17142                 .doit = nl80211_join_mesh,
17143                 .flags = GENL_UNS_ADMIN_PERM,
17144                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17145         },
17146         {
17147                 .cmd = NL80211_CMD_LEAVE_MESH,
17148                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17149                 .doit = nl80211_leave_mesh,
17150                 .flags = GENL_UNS_ADMIN_PERM,
17151                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17152         },
17153         {
17154                 .cmd = NL80211_CMD_JOIN_OCB,
17155                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17156                 .doit = nl80211_join_ocb,
17157                 .flags = GENL_UNS_ADMIN_PERM,
17158                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17159         },
17160         {
17161                 .cmd = NL80211_CMD_LEAVE_OCB,
17162                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17163                 .doit = nl80211_leave_ocb,
17164                 .flags = GENL_UNS_ADMIN_PERM,
17165                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17166         },
17167 #ifdef CONFIG_PM
17168         {
17169                 .cmd = NL80211_CMD_GET_WOWLAN,
17170                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17171                 .doit = nl80211_get_wowlan,
17172                 /* can be retrieved by unprivileged users */
17173                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17174         },
17175         {
17176                 .cmd = NL80211_CMD_SET_WOWLAN,
17177                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17178                 .doit = nl80211_set_wowlan,
17179                 .flags = GENL_UNS_ADMIN_PERM,
17180                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17181         },
17182 #endif
17183         {
17184                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
17185                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17186                 .doit = nl80211_set_rekey_data,
17187                 .flags = GENL_UNS_ADMIN_PERM,
17188                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17189                                          NL80211_FLAG_CLEAR_SKB),
17190         },
17191         {
17192                 .cmd = NL80211_CMD_TDLS_MGMT,
17193                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17194                 .doit = nl80211_tdls_mgmt,
17195                 .flags = GENL_UNS_ADMIN_PERM,
17196                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17197                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17198         },
17199         {
17200                 .cmd = NL80211_CMD_TDLS_OPER,
17201                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17202                 .doit = nl80211_tdls_oper,
17203                 .flags = GENL_UNS_ADMIN_PERM,
17204                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17205         },
17206         {
17207                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
17208                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17209                 .doit = nl80211_register_unexpected_frame,
17210                 .flags = GENL_UNS_ADMIN_PERM,
17211                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17212         },
17213         {
17214                 .cmd = NL80211_CMD_PROBE_CLIENT,
17215                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17216                 .doit = nl80211_probe_client,
17217                 .flags = GENL_UNS_ADMIN_PERM,
17218                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17219         },
17220         {
17221                 .cmd = NL80211_CMD_REGISTER_BEACONS,
17222                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17223                 .doit = nl80211_register_beacons,
17224                 .flags = GENL_UNS_ADMIN_PERM,
17225                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17226         },
17227         {
17228                 .cmd = NL80211_CMD_SET_NOACK_MAP,
17229                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17230                 .doit = nl80211_set_noack_map,
17231                 .flags = GENL_UNS_ADMIN_PERM,
17232                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17233         },
17234         {
17235                 .cmd = NL80211_CMD_START_P2P_DEVICE,
17236                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17237                 .doit = nl80211_start_p2p_device,
17238                 .flags = GENL_UNS_ADMIN_PERM,
17239                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17240                                          NL80211_FLAG_NEED_RTNL),
17241         },
17242         {
17243                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
17244                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17245                 .doit = nl80211_stop_p2p_device,
17246                 .flags = GENL_UNS_ADMIN_PERM,
17247                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17248                                          NL80211_FLAG_NEED_RTNL),
17249         },
17250         {
17251                 .cmd = NL80211_CMD_START_NAN,
17252                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17253                 .doit = nl80211_start_nan,
17254                 .flags = GENL_ADMIN_PERM,
17255                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17256                                          NL80211_FLAG_NEED_RTNL),
17257         },
17258         {
17259                 .cmd = NL80211_CMD_STOP_NAN,
17260                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17261                 .doit = nl80211_stop_nan,
17262                 .flags = GENL_ADMIN_PERM,
17263                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17264                                          NL80211_FLAG_NEED_RTNL),
17265         },
17266         {
17267                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
17268                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17269                 .doit = nl80211_nan_add_func,
17270                 .flags = GENL_ADMIN_PERM,
17271                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17272         },
17273         {
17274                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
17275                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17276                 .doit = nl80211_nan_del_func,
17277                 .flags = GENL_ADMIN_PERM,
17278                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17279         },
17280         {
17281                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
17282                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17283                 .doit = nl80211_nan_change_config,
17284                 .flags = GENL_ADMIN_PERM,
17285                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17286         },
17287         {
17288                 .cmd = NL80211_CMD_SET_MCAST_RATE,
17289                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17290                 .doit = nl80211_set_mcast_rate,
17291                 .flags = GENL_UNS_ADMIN_PERM,
17292                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17293         },
17294         {
17295                 .cmd = NL80211_CMD_SET_MAC_ACL,
17296                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17297                 .doit = nl80211_set_mac_acl,
17298                 .flags = GENL_UNS_ADMIN_PERM,
17299                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17300                                          NL80211_FLAG_MLO_UNSUPPORTED),
17301         },
17302         {
17303                 .cmd = NL80211_CMD_RADAR_DETECT,
17304                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17305                 .doit = nl80211_start_radar_detection,
17306                 .flags = GENL_UNS_ADMIN_PERM,
17307                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17308                                          NL80211_FLAG_NO_WIPHY_MTX |
17309                                          NL80211_FLAG_MLO_UNSUPPORTED),
17310         },
17311         {
17312                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
17313                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17314                 .doit = nl80211_get_protocol_features,
17315         },
17316         {
17317                 .cmd = NL80211_CMD_UPDATE_FT_IES,
17318                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17319                 .doit = nl80211_update_ft_ies,
17320                 .flags = GENL_UNS_ADMIN_PERM,
17321                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17322         },
17323         {
17324                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
17325                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17326                 .doit = nl80211_crit_protocol_start,
17327                 .flags = GENL_UNS_ADMIN_PERM,
17328                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17329         },
17330         {
17331                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
17332                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17333                 .doit = nl80211_crit_protocol_stop,
17334                 .flags = GENL_UNS_ADMIN_PERM,
17335                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17336         },
17337         {
17338                 .cmd = NL80211_CMD_GET_COALESCE,
17339                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17340                 .doit = nl80211_get_coalesce,
17341                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17342         },
17343         {
17344                 .cmd = NL80211_CMD_SET_COALESCE,
17345                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17346                 .doit = nl80211_set_coalesce,
17347                 .flags = GENL_UNS_ADMIN_PERM,
17348                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17349         },
17350         {
17351                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
17352                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17353                 .doit = nl80211_channel_switch,
17354                 .flags = GENL_UNS_ADMIN_PERM,
17355                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17356                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17357         },
17358         {
17359                 .cmd = NL80211_CMD_VENDOR,
17360                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17361                 .doit = nl80211_vendor_cmd,
17362                 .dumpit = nl80211_vendor_cmd_dump,
17363                 .flags = GENL_UNS_ADMIN_PERM,
17364                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17365                                          NL80211_FLAG_CLEAR_SKB),
17366         },
17367         {
17368                 .cmd = NL80211_CMD_SET_QOS_MAP,
17369                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17370                 .doit = nl80211_set_qos_map,
17371                 .flags = GENL_UNS_ADMIN_PERM,
17372                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17373         },
17374         {
17375                 .cmd = NL80211_CMD_ADD_TX_TS,
17376                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17377                 .doit = nl80211_add_tx_ts,
17378                 .flags = GENL_UNS_ADMIN_PERM,
17379                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17380                                          NL80211_FLAG_MLO_UNSUPPORTED),
17381         },
17382         {
17383                 .cmd = NL80211_CMD_DEL_TX_TS,
17384                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17385                 .doit = nl80211_del_tx_ts,
17386                 .flags = GENL_UNS_ADMIN_PERM,
17387                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17388         },
17389         {
17390                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
17391                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17392                 .doit = nl80211_tdls_channel_switch,
17393                 .flags = GENL_UNS_ADMIN_PERM,
17394                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17395         },
17396         {
17397                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
17398                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17399                 .doit = nl80211_tdls_cancel_channel_switch,
17400                 .flags = GENL_UNS_ADMIN_PERM,
17401                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17402         },
17403         {
17404                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
17405                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17406                 .doit = nl80211_set_multicast_to_unicast,
17407                 .flags = GENL_UNS_ADMIN_PERM,
17408                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17409         },
17410         {
17411                 .cmd = NL80211_CMD_SET_PMK,
17412                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17413                 .doit = nl80211_set_pmk,
17414                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17415                                          NL80211_FLAG_CLEAR_SKB),
17416         },
17417         {
17418                 .cmd = NL80211_CMD_DEL_PMK,
17419                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17420                 .doit = nl80211_del_pmk,
17421                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17422         },
17423         {
17424                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
17425                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17426                 .doit = nl80211_external_auth,
17427                 .flags = GENL_ADMIN_PERM,
17428                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17429         },
17430         {
17431                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
17432                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17433                 .doit = nl80211_tx_control_port,
17434                 .flags = GENL_UNS_ADMIN_PERM,
17435                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17436         },
17437         {
17438                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
17439                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17440                 .doit = nl80211_get_ftm_responder_stats,
17441                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17442                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17443         },
17444         {
17445                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
17446                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17447                 .doit = nl80211_pmsr_start,
17448                 .flags = GENL_UNS_ADMIN_PERM,
17449                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17450         },
17451         {
17452                 .cmd = NL80211_CMD_NOTIFY_RADAR,
17453                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17454                 .doit = nl80211_notify_radar_detection,
17455                 .flags = GENL_UNS_ADMIN_PERM,
17456                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17457         },
17458         {
17459                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
17460                 .doit = nl80211_update_owe_info,
17461                 .flags = GENL_ADMIN_PERM,
17462                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17463         },
17464         {
17465                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
17466                 .doit = nl80211_probe_mesh_link,
17467                 .flags = GENL_UNS_ADMIN_PERM,
17468                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17469         },
17470         {
17471                 .cmd = NL80211_CMD_SET_TID_CONFIG,
17472                 .doit = nl80211_set_tid_config,
17473                 .flags = GENL_UNS_ADMIN_PERM,
17474                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17475                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17476         },
17477         {
17478                 .cmd = NL80211_CMD_SET_SAR_SPECS,
17479                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17480                 .doit = nl80211_set_sar_specs,
17481                 .flags = GENL_UNS_ADMIN_PERM,
17482                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17483                                          NL80211_FLAG_NEED_RTNL),
17484         },
17485         {
17486                 .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
17487                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17488                 .doit = nl80211_color_change,
17489                 .flags = GENL_UNS_ADMIN_PERM,
17490                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17491         },
17492         {
17493                 .cmd = NL80211_CMD_SET_FILS_AAD,
17494                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17495                 .doit = nl80211_set_fils_aad,
17496                 .flags = GENL_UNS_ADMIN_PERM,
17497                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17498         },
17499         {
17500                 .cmd = NL80211_CMD_ADD_LINK,
17501                 .doit = nl80211_add_link,
17502                 .flags = GENL_UNS_ADMIN_PERM,
17503                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17504         },
17505         {
17506                 .cmd = NL80211_CMD_REMOVE_LINK,
17507                 .doit = nl80211_remove_link,
17508                 .flags = GENL_UNS_ADMIN_PERM,
17509                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17510                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17511         },
17512         {
17513                 .cmd = NL80211_CMD_ADD_LINK_STA,
17514                 .doit = nl80211_add_link_station,
17515                 .flags = GENL_UNS_ADMIN_PERM,
17516                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17517                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17518         },
17519         {
17520                 .cmd = NL80211_CMD_MODIFY_LINK_STA,
17521                 .doit = nl80211_modify_link_station,
17522                 .flags = GENL_UNS_ADMIN_PERM,
17523                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17524                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17525         },
17526         {
17527                 .cmd = NL80211_CMD_REMOVE_LINK_STA,
17528                 .doit = nl80211_remove_link_station,
17529                 .flags = GENL_UNS_ADMIN_PERM,
17530                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17531                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17532         },
17533         {
17534                 .cmd = NL80211_CMD_SET_HW_TIMESTAMP,
17535                 .doit = nl80211_set_hw_timestamp,
17536                 .flags = GENL_UNS_ADMIN_PERM,
17537                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17538         },
17539         {
17540                 .cmd = NL80211_CMD_SET_TID_TO_LINK_MAPPING,
17541                 .doit = nl80211_set_ttlm,
17542                 .flags = GENL_UNS_ADMIN_PERM,
17543                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17544         },
17545 };
17546
17547 static struct genl_family nl80211_fam __ro_after_init = {
17548         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
17549         .hdrsize = 0,                   /* no private header */
17550         .version = 1,                   /* no particular meaning now */
17551         .maxattr = NL80211_ATTR_MAX,
17552         .policy = nl80211_policy,
17553         .netnsok = true,
17554         .pre_doit = nl80211_pre_doit,
17555         .post_doit = nl80211_post_doit,
17556         .module = THIS_MODULE,
17557         .ops = nl80211_ops,
17558         .n_ops = ARRAY_SIZE(nl80211_ops),
17559         .small_ops = nl80211_small_ops,
17560         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
17561         .resv_start_op = NL80211_CMD_REMOVE_LINK_STA + 1,
17562         .mcgrps = nl80211_mcgrps,
17563         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
17564         .parallel_ops = true,
17565 };
17566
17567 /* notification functions */
17568
17569 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
17570                           enum nl80211_commands cmd)
17571 {
17572         struct sk_buff *msg;
17573         struct nl80211_dump_wiphy_state state = {};
17574
17575         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
17576                 cmd != NL80211_CMD_DEL_WIPHY);
17577
17578         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17579         if (!msg)
17580                 return;
17581
17582         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
17583                 nlmsg_free(msg);
17584                 return;
17585         }
17586
17587         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17588                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17589 }
17590
17591 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
17592                                 struct wireless_dev *wdev,
17593                                 enum nl80211_commands cmd)
17594 {
17595         struct sk_buff *msg;
17596
17597         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17598         if (!msg)
17599                 return;
17600
17601         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
17602                 nlmsg_free(msg);
17603                 return;
17604         }
17605
17606         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17607                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17608 }
17609
17610 static int nl80211_add_scan_req(struct sk_buff *msg,
17611                                 struct cfg80211_registered_device *rdev)
17612 {
17613         struct cfg80211_scan_request *req = rdev->scan_req;
17614         struct nlattr *nest;
17615         int i;
17616         struct cfg80211_scan_info *info;
17617
17618         if (WARN_ON(!req))
17619                 return 0;
17620
17621         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
17622         if (!nest)
17623                 goto nla_put_failure;
17624         for (i = 0; i < req->n_ssids; i++) {
17625                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
17626                         goto nla_put_failure;
17627         }
17628         nla_nest_end(msg, nest);
17629
17630         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
17631                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
17632                 if (!nest)
17633                         goto nla_put_failure;
17634                 for (i = 0; i < req->n_channels; i++) {
17635                         if (nla_put_u32(msg, i,
17636                                    ieee80211_channel_to_khz(req->channels[i])))
17637                                 goto nla_put_failure;
17638                 }
17639                 nla_nest_end(msg, nest);
17640         } else {
17641                 nest = nla_nest_start_noflag(msg,
17642                                              NL80211_ATTR_SCAN_FREQUENCIES);
17643                 if (!nest)
17644                         goto nla_put_failure;
17645                 for (i = 0; i < req->n_channels; i++) {
17646                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
17647                                 goto nla_put_failure;
17648                 }
17649                 nla_nest_end(msg, nest);
17650         }
17651
17652         if (req->ie &&
17653             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
17654                 goto nla_put_failure;
17655
17656         if (req->flags &&
17657             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
17658                 goto nla_put_failure;
17659
17660         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
17661                 &rdev->scan_req->info;
17662         if (info->scan_start_tsf &&
17663             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
17664                                info->scan_start_tsf, NL80211_BSS_PAD) ||
17665              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
17666                      info->tsf_bssid)))
17667                 goto nla_put_failure;
17668
17669         return 0;
17670  nla_put_failure:
17671         return -ENOBUFS;
17672 }
17673
17674 static int nl80211_prep_scan_msg(struct sk_buff *msg,
17675                                  struct cfg80211_registered_device *rdev,
17676                                  struct wireless_dev *wdev,
17677                                  u32 portid, u32 seq, int flags,
17678                                  u32 cmd)
17679 {
17680         void *hdr;
17681
17682         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
17683         if (!hdr)
17684                 return -1;
17685
17686         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17687             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17688                                          wdev->netdev->ifindex)) ||
17689             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17690                               NL80211_ATTR_PAD))
17691                 goto nla_put_failure;
17692
17693         /* ignore errors and send incomplete event anyway */
17694         nl80211_add_scan_req(msg, rdev);
17695
17696         genlmsg_end(msg, hdr);
17697         return 0;
17698
17699  nla_put_failure:
17700         genlmsg_cancel(msg, hdr);
17701         return -EMSGSIZE;
17702 }
17703
17704 static int
17705 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
17706                             struct cfg80211_sched_scan_request *req, u32 cmd)
17707 {
17708         void *hdr;
17709
17710         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17711         if (!hdr)
17712                 return -1;
17713
17714         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
17715                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
17716             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
17717             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
17718                               NL80211_ATTR_PAD))
17719                 goto nla_put_failure;
17720
17721         genlmsg_end(msg, hdr);
17722         return 0;
17723
17724  nla_put_failure:
17725         genlmsg_cancel(msg, hdr);
17726         return -EMSGSIZE;
17727 }
17728
17729 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
17730                              struct wireless_dev *wdev)
17731 {
17732         struct sk_buff *msg;
17733
17734         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17735         if (!msg)
17736                 return;
17737
17738         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17739                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
17740                 nlmsg_free(msg);
17741                 return;
17742         }
17743
17744         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17745                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17746 }
17747
17748 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
17749                                        struct wireless_dev *wdev, bool aborted)
17750 {
17751         struct sk_buff *msg;
17752
17753         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17754         if (!msg)
17755                 return NULL;
17756
17757         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17758                                   aborted ? NL80211_CMD_SCAN_ABORTED :
17759                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
17760                 nlmsg_free(msg);
17761                 return NULL;
17762         }
17763
17764         return msg;
17765 }
17766
17767 /* send message created by nl80211_build_scan_msg() */
17768 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
17769                            struct sk_buff *msg)
17770 {
17771         if (!msg)
17772                 return;
17773
17774         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17775                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17776 }
17777
17778 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
17779 {
17780         struct sk_buff *msg;
17781
17782         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17783         if (!msg)
17784                 return;
17785
17786         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
17787                 nlmsg_free(msg);
17788                 return;
17789         }
17790
17791         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
17792                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17793 }
17794
17795 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
17796                                           struct regulatory_request *request)
17797 {
17798         /* Userspace can always count this one always being set */
17799         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
17800                 goto nla_put_failure;
17801
17802         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
17803                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17804                                NL80211_REGDOM_TYPE_WORLD))
17805                         goto nla_put_failure;
17806         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
17807                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17808                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
17809                         goto nla_put_failure;
17810         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
17811                    request->intersect) {
17812                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17813                                NL80211_REGDOM_TYPE_INTERSECTION))
17814                         goto nla_put_failure;
17815         } else {
17816                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17817                                NL80211_REGDOM_TYPE_COUNTRY) ||
17818                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
17819                                    request->alpha2))
17820                         goto nla_put_failure;
17821         }
17822
17823         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
17824                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
17825
17826                 if (wiphy &&
17827                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
17828                         goto nla_put_failure;
17829
17830                 if (wiphy &&
17831                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
17832                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
17833                         goto nla_put_failure;
17834         }
17835
17836         return true;
17837
17838 nla_put_failure:
17839         return false;
17840 }
17841
17842 /*
17843  * This can happen on global regulatory changes or device specific settings
17844  * based on custom regulatory domains.
17845  */
17846 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
17847                                      struct regulatory_request *request)
17848 {
17849         struct sk_buff *msg;
17850         void *hdr;
17851
17852         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17853         if (!msg)
17854                 return;
17855
17856         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
17857         if (!hdr)
17858                 goto nla_put_failure;
17859
17860         if (!nl80211_reg_change_event_fill(msg, request))
17861                 goto nla_put_failure;
17862
17863         genlmsg_end(msg, hdr);
17864
17865         rcu_read_lock();
17866         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
17867                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
17868         rcu_read_unlock();
17869
17870         return;
17871
17872 nla_put_failure:
17873         nlmsg_free(msg);
17874 }
17875
17876 struct nl80211_mlme_event {
17877         enum nl80211_commands cmd;
17878         const u8 *buf;
17879         size_t buf_len;
17880         int uapsd_queues;
17881         const u8 *req_ies;
17882         size_t req_ies_len;
17883         bool reconnect;
17884 };
17885
17886 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
17887                                     struct net_device *netdev,
17888                                     const struct nl80211_mlme_event *event,
17889                                     gfp_t gfp)
17890 {
17891         struct sk_buff *msg;
17892         void *hdr;
17893
17894         msg = nlmsg_new(100 + event->buf_len + event->req_ies_len, gfp);
17895         if (!msg)
17896                 return;
17897
17898         hdr = nl80211hdr_put(msg, 0, 0, 0, event->cmd);
17899         if (!hdr) {
17900                 nlmsg_free(msg);
17901                 return;
17902         }
17903
17904         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17905             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17906             nla_put(msg, NL80211_ATTR_FRAME, event->buf_len, event->buf) ||
17907             (event->req_ies &&
17908              nla_put(msg, NL80211_ATTR_REQ_IE, event->req_ies_len,
17909                      event->req_ies)))
17910                 goto nla_put_failure;
17911
17912         if (event->reconnect &&
17913             nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
17914                 goto nla_put_failure;
17915
17916         if (event->uapsd_queues >= 0) {
17917                 struct nlattr *nla_wmm =
17918                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
17919                 if (!nla_wmm)
17920                         goto nla_put_failure;
17921
17922                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
17923                                event->uapsd_queues))
17924                         goto nla_put_failure;
17925
17926                 nla_nest_end(msg, nla_wmm);
17927         }
17928
17929         genlmsg_end(msg, hdr);
17930
17931         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17932                                 NL80211_MCGRP_MLME, gfp);
17933         return;
17934
17935  nla_put_failure:
17936         nlmsg_free(msg);
17937 }
17938
17939 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
17940                           struct net_device *netdev, const u8 *buf,
17941                           size_t len, gfp_t gfp)
17942 {
17943         struct nl80211_mlme_event event = {
17944                 .cmd = NL80211_CMD_AUTHENTICATE,
17945                 .buf = buf,
17946                 .buf_len = len,
17947                 .uapsd_queues = -1,
17948         };
17949
17950         nl80211_send_mlme_event(rdev, netdev, &event, gfp);
17951 }
17952
17953 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
17954                            struct net_device *netdev,
17955                            const struct cfg80211_rx_assoc_resp_data *data)
17956 {
17957         struct nl80211_mlme_event event = {
17958                 .cmd = NL80211_CMD_ASSOCIATE,
17959                 .buf = data->buf,
17960                 .buf_len = data->len,
17961                 .uapsd_queues = data->uapsd_queues,
17962                 .req_ies = data->req_ies,
17963                 .req_ies_len = data->req_ies_len,
17964         };
17965
17966         nl80211_send_mlme_event(rdev, netdev, &event, GFP_KERNEL);
17967 }
17968
17969 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
17970                          struct net_device *netdev, const u8 *buf,
17971                          size_t len, bool reconnect, gfp_t gfp)
17972 {
17973         struct nl80211_mlme_event event = {
17974                 .cmd = NL80211_CMD_DEAUTHENTICATE,
17975                 .buf = buf,
17976                 .buf_len = len,
17977                 .reconnect = reconnect,
17978                 .uapsd_queues = -1,
17979         };
17980
17981         nl80211_send_mlme_event(rdev, netdev, &event, gfp);
17982 }
17983
17984 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
17985                            struct net_device *netdev, const u8 *buf,
17986                            size_t len, bool reconnect, gfp_t gfp)
17987 {
17988         struct nl80211_mlme_event event = {
17989                 .cmd = NL80211_CMD_DISASSOCIATE,
17990                 .buf = buf,
17991                 .buf_len = len,
17992                 .reconnect = reconnect,
17993                 .uapsd_queues = -1,
17994         };
17995
17996         nl80211_send_mlme_event(rdev, netdev, &event, gfp);
17997 }
17998
17999 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
18000                                   size_t len)
18001 {
18002         struct wireless_dev *wdev = dev->ieee80211_ptr;
18003         struct wiphy *wiphy = wdev->wiphy;
18004         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18005         const struct ieee80211_mgmt *mgmt = (void *)buf;
18006         struct nl80211_mlme_event event = {
18007                 .buf = buf,
18008                 .buf_len = len,
18009                 .uapsd_queues = -1,
18010         };
18011
18012         if (WARN_ON(len < 2))
18013                 return;
18014
18015         if (ieee80211_is_deauth(mgmt->frame_control)) {
18016                 event.cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
18017         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
18018                 event.cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
18019         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
18020                 if (wdev->unprot_beacon_reported &&
18021                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
18022                         return;
18023                 event.cmd = NL80211_CMD_UNPROT_BEACON;
18024                 wdev->unprot_beacon_reported = jiffies;
18025         } else {
18026                 return;
18027         }
18028
18029         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
18030         nl80211_send_mlme_event(rdev, dev, &event, GFP_ATOMIC);
18031 }
18032 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
18033
18034 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
18035                                       struct net_device *netdev, int cmd,
18036                                       const u8 *addr, gfp_t gfp)
18037 {
18038         struct sk_buff *msg;
18039         void *hdr;
18040
18041         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18042         if (!msg)
18043                 return;
18044
18045         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18046         if (!hdr) {
18047                 nlmsg_free(msg);
18048                 return;
18049         }
18050
18051         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18052             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18053             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
18054             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18055                 goto nla_put_failure;
18056
18057         genlmsg_end(msg, hdr);
18058
18059         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18060                                 NL80211_MCGRP_MLME, gfp);
18061         return;
18062
18063  nla_put_failure:
18064         nlmsg_free(msg);
18065 }
18066
18067 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
18068                                struct net_device *netdev, const u8 *addr,
18069                                gfp_t gfp)
18070 {
18071         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
18072                                   addr, gfp);
18073 }
18074
18075 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
18076                                 struct net_device *netdev, const u8 *addr,
18077                                 gfp_t gfp)
18078 {
18079         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
18080                                   addr, gfp);
18081 }
18082
18083 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
18084                                  struct net_device *netdev,
18085                                  struct cfg80211_connect_resp_params *cr,
18086                                  gfp_t gfp)
18087 {
18088         struct sk_buff *msg;
18089         void *hdr;
18090         unsigned int link;
18091         size_t link_info_size = 0;
18092         const u8 *connected_addr = cr->valid_links ?
18093                                    cr->ap_mld_addr : cr->links[0].bssid;
18094
18095         if (cr->valid_links) {
18096                 for_each_valid_link(cr, link) {
18097                         /* Nested attribute header */
18098                         link_info_size += NLA_HDRLEN;
18099                         /* Link ID */
18100                         link_info_size += nla_total_size(sizeof(u8));
18101                         link_info_size += cr->links[link].addr ?
18102                                           nla_total_size(ETH_ALEN) : 0;
18103                         link_info_size += (cr->links[link].bssid ||
18104                                            cr->links[link].bss) ?
18105                                           nla_total_size(ETH_ALEN) : 0;
18106                         link_info_size += nla_total_size(sizeof(u16));
18107                 }
18108         }
18109
18110         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
18111                         cr->fils.kek_len + cr->fils.pmk_len +
18112                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
18113                         gfp);
18114         if (!msg)
18115                 return;
18116
18117         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
18118         if (!hdr) {
18119                 nlmsg_free(msg);
18120                 return;
18121         }
18122
18123         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18124             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18125             (connected_addr &&
18126              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr)) ||
18127             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
18128                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
18129                         cr->status) ||
18130             (cr->status < 0 &&
18131              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
18132               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
18133                           cr->timeout_reason))) ||
18134             (cr->req_ie &&
18135              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
18136             (cr->resp_ie &&
18137              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
18138                      cr->resp_ie)) ||
18139             (cr->fils.update_erp_next_seq_num &&
18140              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18141                          cr->fils.erp_next_seq_num)) ||
18142             (cr->status == WLAN_STATUS_SUCCESS &&
18143              ((cr->fils.kek &&
18144                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
18145                        cr->fils.kek)) ||
18146               (cr->fils.pmk &&
18147                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
18148               (cr->fils.pmkid &&
18149                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
18150                 goto nla_put_failure;
18151
18152         if (cr->valid_links) {
18153                 int i = 1;
18154                 struct nlattr *nested;
18155
18156                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18157                 if (!nested)
18158                         goto nla_put_failure;
18159
18160                 for_each_valid_link(cr, link) {
18161                         struct nlattr *nested_mlo_links;
18162                         const u8 *bssid = cr->links[link].bss ?
18163                                           cr->links[link].bss->bssid :
18164                                           cr->links[link].bssid;
18165
18166                         nested_mlo_links = nla_nest_start(msg, i);
18167                         if (!nested_mlo_links)
18168                                 goto nla_put_failure;
18169
18170                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18171                             (bssid &&
18172                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18173                             (cr->links[link].addr &&
18174                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18175                                      cr->links[link].addr)) ||
18176                             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
18177                                         cr->links[link].status))
18178                                 goto nla_put_failure;
18179
18180                         nla_nest_end(msg, nested_mlo_links);
18181                         i++;
18182                 }
18183                 nla_nest_end(msg, nested);
18184         }
18185
18186         genlmsg_end(msg, hdr);
18187
18188         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18189                                 NL80211_MCGRP_MLME, gfp);
18190         return;
18191
18192  nla_put_failure:
18193         nlmsg_free(msg);
18194 }
18195
18196 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
18197                          struct net_device *netdev,
18198                          struct cfg80211_roam_info *info, gfp_t gfp)
18199 {
18200         struct sk_buff *msg;
18201         void *hdr;
18202         size_t link_info_size = 0;
18203         unsigned int link;
18204         const u8 *connected_addr = info->ap_mld_addr ?
18205                                    info->ap_mld_addr :
18206                                    (info->links[0].bss ?
18207                                     info->links[0].bss->bssid :
18208                                     info->links[0].bssid);
18209
18210         if (info->valid_links) {
18211                 for_each_valid_link(info, link) {
18212                         /* Nested attribute header */
18213                         link_info_size += NLA_HDRLEN;
18214                         /* Link ID */
18215                         link_info_size += nla_total_size(sizeof(u8));
18216                         link_info_size += info->links[link].addr ?
18217                                           nla_total_size(ETH_ALEN) : 0;
18218                         link_info_size += (info->links[link].bssid ||
18219                                            info->links[link].bss) ?
18220                                           nla_total_size(ETH_ALEN) : 0;
18221                 }
18222         }
18223
18224         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
18225                         info->fils.kek_len + info->fils.pmk_len +
18226                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
18227                         link_info_size, gfp);
18228         if (!msg)
18229                 return;
18230
18231         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
18232         if (!hdr) {
18233                 nlmsg_free(msg);
18234                 return;
18235         }
18236
18237         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18238             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18239             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr) ||
18240             (info->req_ie &&
18241              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
18242                      info->req_ie)) ||
18243             (info->resp_ie &&
18244              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
18245                      info->resp_ie)) ||
18246             (info->fils.update_erp_next_seq_num &&
18247              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18248                          info->fils.erp_next_seq_num)) ||
18249             (info->fils.kek &&
18250              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
18251                      info->fils.kek)) ||
18252             (info->fils.pmk &&
18253              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
18254             (info->fils.pmkid &&
18255              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
18256                 goto nla_put_failure;
18257
18258         if (info->valid_links) {
18259                 int i = 1;
18260                 struct nlattr *nested;
18261
18262                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18263                 if (!nested)
18264                         goto nla_put_failure;
18265
18266                 for_each_valid_link(info, link) {
18267                         struct nlattr *nested_mlo_links;
18268                         const u8 *bssid = info->links[link].bss ?
18269                                           info->links[link].bss->bssid :
18270                                           info->links[link].bssid;
18271
18272                         nested_mlo_links = nla_nest_start(msg, i);
18273                         if (!nested_mlo_links)
18274                                 goto nla_put_failure;
18275
18276                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18277                             (bssid &&
18278                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18279                             (info->links[link].addr &&
18280                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18281                                      info->links[link].addr)))
18282                                 goto nla_put_failure;
18283
18284                         nla_nest_end(msg, nested_mlo_links);
18285                         i++;
18286                 }
18287                 nla_nest_end(msg, nested);
18288         }
18289
18290         genlmsg_end(msg, hdr);
18291
18292         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18293                                 NL80211_MCGRP_MLME, gfp);
18294         return;
18295
18296  nla_put_failure:
18297         nlmsg_free(msg);
18298 }
18299
18300 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
18301                                   struct net_device *netdev, const u8 *peer_addr,
18302                                   const u8 *td_bitmap, u8 td_bitmap_len)
18303 {
18304         struct sk_buff *msg;
18305         void *hdr;
18306
18307         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18308         if (!msg)
18309                 return;
18310
18311         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
18312         if (!hdr) {
18313                 nlmsg_free(msg);
18314                 return;
18315         }
18316
18317         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18318             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18319             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer_addr))
18320                 goto nla_put_failure;
18321
18322         if ((td_bitmap_len > 0) && td_bitmap)
18323                 if (nla_put(msg, NL80211_ATTR_TD_BITMAP,
18324                             td_bitmap_len, td_bitmap))
18325                         goto nla_put_failure;
18326
18327         genlmsg_end(msg, hdr);
18328
18329         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18330                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18331         return;
18332
18333  nla_put_failure:
18334         nlmsg_free(msg);
18335 }
18336
18337 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
18338                                struct net_device *netdev, u16 reason,
18339                                const u8 *ie, size_t ie_len, bool from_ap)
18340 {
18341         struct sk_buff *msg;
18342         void *hdr;
18343
18344         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
18345         if (!msg)
18346                 return;
18347
18348         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
18349         if (!hdr) {
18350                 nlmsg_free(msg);
18351                 return;
18352         }
18353
18354         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18355             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18356             (reason &&
18357              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
18358             (from_ap &&
18359              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
18360             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
18361                 goto nla_put_failure;
18362
18363         genlmsg_end(msg, hdr);
18364
18365         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18366                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18367         return;
18368
18369  nla_put_failure:
18370         nlmsg_free(msg);
18371 }
18372
18373 void cfg80211_links_removed(struct net_device *dev, u16 link_mask)
18374 {
18375         struct wireless_dev *wdev = dev->ieee80211_ptr;
18376         struct wiphy *wiphy = wdev->wiphy;
18377         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18378         struct sk_buff *msg;
18379         struct nlattr *links;
18380         void *hdr;
18381
18382         lockdep_assert_wiphy(wdev->wiphy);
18383         trace_cfg80211_links_removed(dev, link_mask);
18384
18385         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
18386                     wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
18387                 return;
18388
18389         if (WARN_ON(!wdev->valid_links || !link_mask ||
18390                     (wdev->valid_links & link_mask) != link_mask ||
18391                     wdev->valid_links == link_mask))
18392                 return;
18393
18394         cfg80211_wdev_release_link_bsses(wdev, link_mask);
18395         wdev->valid_links &= ~link_mask;
18396
18397         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18398         if (!msg)
18399                 return;
18400
18401         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_LINKS_REMOVED);
18402         if (!hdr) {
18403                 nlmsg_free(msg);
18404                 return;
18405         }
18406
18407         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18408             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
18409                 goto nla_put_failure;
18410
18411         links = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18412         if (!links)
18413                 goto nla_put_failure;
18414
18415         while (link_mask) {
18416                 struct nlattr *link;
18417                 int link_id = __ffs(link_mask);
18418
18419                 link = nla_nest_start(msg, link_id + 1);
18420                 if (!link)
18421                         goto nla_put_failure;
18422
18423                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
18424                         goto nla_put_failure;
18425
18426                 nla_nest_end(msg, link);
18427                 link_mask &= ~(1 << link_id);
18428         }
18429
18430         nla_nest_end(msg, links);
18431
18432         genlmsg_end(msg, hdr);
18433
18434         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18435                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18436         return;
18437
18438  nla_put_failure:
18439         nlmsg_free(msg);
18440 }
18441 EXPORT_SYMBOL(cfg80211_links_removed);
18442
18443 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
18444                              struct net_device *netdev, const u8 *bssid,
18445                              gfp_t gfp)
18446 {
18447         struct sk_buff *msg;
18448         void *hdr;
18449
18450         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18451         if (!msg)
18452                 return;
18453
18454         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
18455         if (!hdr) {
18456                 nlmsg_free(msg);
18457                 return;
18458         }
18459
18460         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18461             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18462             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18463                 goto nla_put_failure;
18464
18465         genlmsg_end(msg, hdr);
18466
18467         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18468                                 NL80211_MCGRP_MLME, gfp);
18469         return;
18470
18471  nla_put_failure:
18472         nlmsg_free(msg);
18473 }
18474
18475 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
18476                                         const u8 *ie, u8 ie_len,
18477                                         int sig_dbm, gfp_t gfp)
18478 {
18479         struct wireless_dev *wdev = dev->ieee80211_ptr;
18480         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18481         struct sk_buff *msg;
18482         void *hdr;
18483
18484         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
18485                 return;
18486
18487         trace_cfg80211_notify_new_peer_candidate(dev, addr);
18488
18489         msg = nlmsg_new(100 + ie_len, gfp);
18490         if (!msg)
18491                 return;
18492
18493         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
18494         if (!hdr) {
18495                 nlmsg_free(msg);
18496                 return;
18497         }
18498
18499         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18500             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18501             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18502             (ie_len && ie &&
18503              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
18504             (sig_dbm &&
18505              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
18506                 goto nla_put_failure;
18507
18508         genlmsg_end(msg, hdr);
18509
18510         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18511                                 NL80211_MCGRP_MLME, gfp);
18512         return;
18513
18514  nla_put_failure:
18515         nlmsg_free(msg);
18516 }
18517 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
18518
18519 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
18520                                  struct net_device *netdev, const u8 *addr,
18521                                  enum nl80211_key_type key_type, int key_id,
18522                                  const u8 *tsc, gfp_t gfp)
18523 {
18524         struct sk_buff *msg;
18525         void *hdr;
18526
18527         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18528         if (!msg)
18529                 return;
18530
18531         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
18532         if (!hdr) {
18533                 nlmsg_free(msg);
18534                 return;
18535         }
18536
18537         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18538             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18539             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
18540             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
18541             (key_id != -1 &&
18542              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
18543             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
18544                 goto nla_put_failure;
18545
18546         genlmsg_end(msg, hdr);
18547
18548         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18549                                 NL80211_MCGRP_MLME, gfp);
18550         return;
18551
18552  nla_put_failure:
18553         nlmsg_free(msg);
18554 }
18555
18556 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
18557                                     struct ieee80211_channel *channel_before,
18558                                     struct ieee80211_channel *channel_after)
18559 {
18560         struct sk_buff *msg;
18561         void *hdr;
18562         struct nlattr *nl_freq;
18563
18564         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
18565         if (!msg)
18566                 return;
18567
18568         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
18569         if (!hdr) {
18570                 nlmsg_free(msg);
18571                 return;
18572         }
18573
18574         /*
18575          * Since we are applying the beacon hint to a wiphy we know its
18576          * wiphy_idx is valid
18577          */
18578         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
18579                 goto nla_put_failure;
18580
18581         /* Before */
18582         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
18583         if (!nl_freq)
18584                 goto nla_put_failure;
18585
18586         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
18587                 goto nla_put_failure;
18588         nla_nest_end(msg, nl_freq);
18589
18590         /* After */
18591         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
18592         if (!nl_freq)
18593                 goto nla_put_failure;
18594
18595         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
18596                 goto nla_put_failure;
18597         nla_nest_end(msg, nl_freq);
18598
18599         genlmsg_end(msg, hdr);
18600
18601         rcu_read_lock();
18602         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
18603                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
18604         rcu_read_unlock();
18605
18606         return;
18607
18608 nla_put_failure:
18609         nlmsg_free(msg);
18610 }
18611
18612 static void nl80211_send_remain_on_chan_event(
18613         int cmd, struct cfg80211_registered_device *rdev,
18614         struct wireless_dev *wdev, u64 cookie,
18615         struct ieee80211_channel *chan,
18616         unsigned int duration, gfp_t gfp)
18617 {
18618         struct sk_buff *msg;
18619         void *hdr;
18620
18621         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18622         if (!msg)
18623                 return;
18624
18625         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18626         if (!hdr) {
18627                 nlmsg_free(msg);
18628                 return;
18629         }
18630
18631         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18632             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18633                                          wdev->netdev->ifindex)) ||
18634             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18635                               NL80211_ATTR_PAD) ||
18636             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
18637             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
18638                         NL80211_CHAN_NO_HT) ||
18639             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
18640                               NL80211_ATTR_PAD))
18641                 goto nla_put_failure;
18642
18643         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
18644             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
18645                 goto nla_put_failure;
18646
18647         genlmsg_end(msg, hdr);
18648
18649         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18650                                 NL80211_MCGRP_MLME, gfp);
18651         return;
18652
18653  nla_put_failure:
18654         nlmsg_free(msg);
18655 }
18656
18657 void cfg80211_assoc_comeback(struct net_device *netdev,
18658                              const u8 *ap_addr, u32 timeout)
18659 {
18660         struct wireless_dev *wdev = netdev->ieee80211_ptr;
18661         struct wiphy *wiphy = wdev->wiphy;
18662         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18663         struct sk_buff *msg;
18664         void *hdr;
18665
18666         trace_cfg80211_assoc_comeback(wdev, ap_addr, timeout);
18667
18668         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18669         if (!msg)
18670                 return;
18671
18672         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK);
18673         if (!hdr) {
18674                 nlmsg_free(msg);
18675                 return;
18676         }
18677
18678         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18679             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18680             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ap_addr) ||
18681             nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout))
18682                 goto nla_put_failure;
18683
18684         genlmsg_end(msg, hdr);
18685
18686         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18687                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18688         return;
18689
18690  nla_put_failure:
18691         nlmsg_free(msg);
18692 }
18693 EXPORT_SYMBOL(cfg80211_assoc_comeback);
18694
18695 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
18696                                struct ieee80211_channel *chan,
18697                                unsigned int duration, gfp_t gfp)
18698 {
18699         struct wiphy *wiphy = wdev->wiphy;
18700         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18701
18702         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
18703         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
18704                                           rdev, wdev, cookie, chan,
18705                                           duration, gfp);
18706 }
18707 EXPORT_SYMBOL(cfg80211_ready_on_channel);
18708
18709 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
18710                                         struct ieee80211_channel *chan,
18711                                         gfp_t gfp)
18712 {
18713         struct wiphy *wiphy = wdev->wiphy;
18714         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18715
18716         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
18717         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
18718                                           rdev, wdev, cookie, chan, 0, gfp);
18719 }
18720 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
18721
18722 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
18723                                         struct ieee80211_channel *chan,
18724                                         gfp_t gfp)
18725 {
18726         struct wiphy *wiphy = wdev->wiphy;
18727         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18728
18729         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
18730         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
18731                                           rdev, wdev, cookie, chan, 0, gfp);
18732 }
18733 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
18734
18735 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
18736                       struct station_info *sinfo, gfp_t gfp)
18737 {
18738         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18739         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18740         struct sk_buff *msg;
18741
18742         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
18743
18744         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18745         if (!msg)
18746                 return;
18747
18748         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
18749                                  rdev, dev, mac_addr, sinfo) < 0) {
18750                 nlmsg_free(msg);
18751                 return;
18752         }
18753
18754         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18755                                 NL80211_MCGRP_MLME, gfp);
18756 }
18757 EXPORT_SYMBOL(cfg80211_new_sta);
18758
18759 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
18760                             struct station_info *sinfo, gfp_t gfp)
18761 {
18762         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18763         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18764         struct sk_buff *msg;
18765         struct station_info empty_sinfo = {};
18766
18767         if (!sinfo)
18768                 sinfo = &empty_sinfo;
18769
18770         trace_cfg80211_del_sta(dev, mac_addr);
18771
18772         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18773         if (!msg) {
18774                 cfg80211_sinfo_release_content(sinfo);
18775                 return;
18776         }
18777
18778         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
18779                                  rdev, dev, mac_addr, sinfo) < 0) {
18780                 nlmsg_free(msg);
18781                 return;
18782         }
18783
18784         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18785                                 NL80211_MCGRP_MLME, gfp);
18786 }
18787 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
18788
18789 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
18790                           enum nl80211_connect_failed_reason reason,
18791                           gfp_t gfp)
18792 {
18793         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18794         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18795         struct sk_buff *msg;
18796         void *hdr;
18797
18798         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
18799         if (!msg)
18800                 return;
18801
18802         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
18803         if (!hdr) {
18804                 nlmsg_free(msg);
18805                 return;
18806         }
18807
18808         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18809             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
18810             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
18811                 goto nla_put_failure;
18812
18813         genlmsg_end(msg, hdr);
18814
18815         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18816                                 NL80211_MCGRP_MLME, gfp);
18817         return;
18818
18819  nla_put_failure:
18820         nlmsg_free(msg);
18821 }
18822 EXPORT_SYMBOL(cfg80211_conn_failed);
18823
18824 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
18825                                        const u8 *addr, gfp_t gfp)
18826 {
18827         struct wireless_dev *wdev = dev->ieee80211_ptr;
18828         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18829         struct sk_buff *msg;
18830         void *hdr;
18831         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
18832
18833         if (!nlportid)
18834                 return false;
18835
18836         msg = nlmsg_new(100, gfp);
18837         if (!msg)
18838                 return true;
18839
18840         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18841         if (!hdr) {
18842                 nlmsg_free(msg);
18843                 return true;
18844         }
18845
18846         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18847             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18848             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18849                 goto nla_put_failure;
18850
18851         genlmsg_end(msg, hdr);
18852         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18853         return true;
18854
18855  nla_put_failure:
18856         nlmsg_free(msg);
18857         return true;
18858 }
18859
18860 bool cfg80211_rx_spurious_frame(struct net_device *dev,
18861                                 const u8 *addr, gfp_t gfp)
18862 {
18863         struct wireless_dev *wdev = dev->ieee80211_ptr;
18864         bool ret;
18865
18866         trace_cfg80211_rx_spurious_frame(dev, addr);
18867
18868         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18869                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
18870                 trace_cfg80211_return_bool(false);
18871                 return false;
18872         }
18873         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
18874                                          addr, gfp);
18875         trace_cfg80211_return_bool(ret);
18876         return ret;
18877 }
18878 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
18879
18880 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
18881                                         const u8 *addr, gfp_t gfp)
18882 {
18883         struct wireless_dev *wdev = dev->ieee80211_ptr;
18884         bool ret;
18885
18886         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
18887
18888         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18889                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
18890                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
18891                 trace_cfg80211_return_bool(false);
18892                 return false;
18893         }
18894         ret = __nl80211_unexpected_frame(dev,
18895                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
18896                                          addr, gfp);
18897         trace_cfg80211_return_bool(ret);
18898         return ret;
18899 }
18900 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
18901
18902 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
18903                       struct wireless_dev *wdev, u32 nlportid,
18904                       struct cfg80211_rx_info *info, gfp_t gfp)
18905 {
18906         struct net_device *netdev = wdev->netdev;
18907         struct sk_buff *msg;
18908         void *hdr;
18909
18910         msg = nlmsg_new(100 + info->len, gfp);
18911         if (!msg)
18912                 return -ENOMEM;
18913
18914         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
18915         if (!hdr) {
18916                 nlmsg_free(msg);
18917                 return -ENOMEM;
18918         }
18919
18920         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18921             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18922                                         netdev->ifindex)) ||
18923             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18924                               NL80211_ATTR_PAD) ||
18925             (info->have_link_id &&
18926              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, info->link_id)) ||
18927             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(info->freq)) ||
18928             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, info->freq % 1000) ||
18929             (info->sig_dbm &&
18930              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, info->sig_dbm)) ||
18931             nla_put(msg, NL80211_ATTR_FRAME, info->len, info->buf) ||
18932             (info->flags &&
18933              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, info->flags)) ||
18934             (info->rx_tstamp && nla_put_u64_64bit(msg,
18935                                                   NL80211_ATTR_RX_HW_TIMESTAMP,
18936                                                   info->rx_tstamp,
18937                                                   NL80211_ATTR_PAD)) ||
18938             (info->ack_tstamp && nla_put_u64_64bit(msg,
18939                                                    NL80211_ATTR_TX_HW_TIMESTAMP,
18940                                                    info->ack_tstamp,
18941                                                    NL80211_ATTR_PAD)))
18942                 goto nla_put_failure;
18943
18944         genlmsg_end(msg, hdr);
18945
18946         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18947
18948  nla_put_failure:
18949         nlmsg_free(msg);
18950         return -ENOBUFS;
18951 }
18952
18953 static void nl80211_frame_tx_status(struct wireless_dev *wdev,
18954                                     struct cfg80211_tx_status *status,
18955                                     gfp_t gfp, enum nl80211_commands command)
18956 {
18957         struct wiphy *wiphy = wdev->wiphy;
18958         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18959         struct net_device *netdev = wdev->netdev;
18960         struct sk_buff *msg;
18961         void *hdr;
18962
18963         if (command == NL80211_CMD_FRAME_TX_STATUS)
18964                 trace_cfg80211_mgmt_tx_status(wdev, status->cookie,
18965                                               status->ack);
18966         else
18967                 trace_cfg80211_control_port_tx_status(wdev, status->cookie,
18968                                                       status->ack);
18969
18970         msg = nlmsg_new(100 + status->len, gfp);
18971         if (!msg)
18972                 return;
18973
18974         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
18975         if (!hdr) {
18976                 nlmsg_free(msg);
18977                 return;
18978         }
18979
18980         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18981             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18982                                    netdev->ifindex)) ||
18983             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18984                               NL80211_ATTR_PAD) ||
18985             nla_put(msg, NL80211_ATTR_FRAME, status->len, status->buf) ||
18986             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, status->cookie,
18987                               NL80211_ATTR_PAD) ||
18988             (status->ack && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
18989             (status->tx_tstamp &&
18990              nla_put_u64_64bit(msg, NL80211_ATTR_TX_HW_TIMESTAMP,
18991                                status->tx_tstamp, NL80211_ATTR_PAD)) ||
18992             (status->ack_tstamp &&
18993              nla_put_u64_64bit(msg, NL80211_ATTR_RX_HW_TIMESTAMP,
18994                                status->ack_tstamp, NL80211_ATTR_PAD)))
18995                 goto nla_put_failure;
18996
18997         genlmsg_end(msg, hdr);
18998
18999         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19000                                 NL80211_MCGRP_MLME, gfp);
19001         return;
19002
19003 nla_put_failure:
19004         nlmsg_free(msg);
19005 }
19006
19007 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
19008                                      const u8 *buf, size_t len, bool ack,
19009                                      gfp_t gfp)
19010 {
19011         struct cfg80211_tx_status status = {
19012                 .cookie = cookie,
19013                 .buf = buf,
19014                 .len = len,
19015                 .ack = ack
19016         };
19017
19018         nl80211_frame_tx_status(wdev, &status, gfp,
19019                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
19020 }
19021 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
19022
19023 void cfg80211_mgmt_tx_status_ext(struct wireless_dev *wdev,
19024                                  struct cfg80211_tx_status *status, gfp_t gfp)
19025 {
19026         nl80211_frame_tx_status(wdev, status, gfp, NL80211_CMD_FRAME_TX_STATUS);
19027 }
19028 EXPORT_SYMBOL(cfg80211_mgmt_tx_status_ext);
19029
19030 static int __nl80211_rx_control_port(struct net_device *dev,
19031                                      struct sk_buff *skb,
19032                                      bool unencrypted,
19033                                      int link_id,
19034                                      gfp_t gfp)
19035 {
19036         struct wireless_dev *wdev = dev->ieee80211_ptr;
19037         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19038         struct ethhdr *ehdr = eth_hdr(skb);
19039         const u8 *addr = ehdr->h_source;
19040         u16 proto = be16_to_cpu(skb->protocol);
19041         struct sk_buff *msg;
19042         void *hdr;
19043         struct nlattr *frame;
19044
19045         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
19046
19047         if (!nlportid)
19048                 return -ENOENT;
19049
19050         msg = nlmsg_new(100 + skb->len, gfp);
19051         if (!msg)
19052                 return -ENOMEM;
19053
19054         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
19055         if (!hdr) {
19056                 nlmsg_free(msg);
19057                 return -ENOBUFS;
19058         }
19059
19060         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19061             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19062             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19063                               NL80211_ATTR_PAD) ||
19064             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19065             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
19066             (link_id >= 0 &&
19067              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)) ||
19068             (unencrypted && nla_put_flag(msg,
19069                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
19070                 goto nla_put_failure;
19071
19072         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
19073         if (!frame)
19074                 goto nla_put_failure;
19075
19076         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
19077         genlmsg_end(msg, hdr);
19078
19079         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
19080
19081  nla_put_failure:
19082         nlmsg_free(msg);
19083         return -ENOBUFS;
19084 }
19085
19086 bool cfg80211_rx_control_port(struct net_device *dev, struct sk_buff *skb,
19087                               bool unencrypted, int link_id)
19088 {
19089         int ret;
19090
19091         trace_cfg80211_rx_control_port(dev, skb, unencrypted, link_id);
19092         ret = __nl80211_rx_control_port(dev, skb, unencrypted, link_id,
19093                                         GFP_ATOMIC);
19094         trace_cfg80211_return_bool(ret == 0);
19095         return ret == 0;
19096 }
19097 EXPORT_SYMBOL(cfg80211_rx_control_port);
19098
19099 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
19100                                             const char *mac, gfp_t gfp)
19101 {
19102         struct wireless_dev *wdev = dev->ieee80211_ptr;
19103         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19104         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19105         void **cb;
19106
19107         if (!msg)
19108                 return NULL;
19109
19110         cb = (void **)msg->cb;
19111
19112         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
19113         if (!cb[0]) {
19114                 nlmsg_free(msg);
19115                 return NULL;
19116         }
19117
19118         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19119             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19120                 goto nla_put_failure;
19121
19122         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19123                 goto nla_put_failure;
19124
19125         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
19126         if (!cb[1])
19127                 goto nla_put_failure;
19128
19129         cb[2] = rdev;
19130
19131         return msg;
19132  nla_put_failure:
19133         nlmsg_free(msg);
19134         return NULL;
19135 }
19136
19137 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
19138 {
19139         void **cb = (void **)msg->cb;
19140         struct cfg80211_registered_device *rdev = cb[2];
19141
19142         nla_nest_end(msg, cb[1]);
19143         genlmsg_end(msg, cb[0]);
19144
19145         memset(msg->cb, 0, sizeof(msg->cb));
19146
19147         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19148                                 NL80211_MCGRP_MLME, gfp);
19149 }
19150
19151 void cfg80211_cqm_rssi_notify(struct net_device *dev,
19152                               enum nl80211_cqm_rssi_threshold_event rssi_event,
19153                               s32 rssi_level, gfp_t gfp)
19154 {
19155         struct wireless_dev *wdev = dev->ieee80211_ptr;
19156         struct cfg80211_cqm_config *cqm_config;
19157
19158         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
19159
19160         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
19161                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
19162                 return;
19163
19164         rcu_read_lock();
19165         cqm_config = rcu_dereference(wdev->cqm_config);
19166         if (cqm_config) {
19167                 cqm_config->last_rssi_event_value = rssi_level;
19168                 cqm_config->last_rssi_event_type = rssi_event;
19169                 wiphy_work_queue(wdev->wiphy, &wdev->cqm_rssi_work);
19170         }
19171         rcu_read_unlock();
19172 }
19173 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
19174
19175 void cfg80211_cqm_rssi_notify_work(struct wiphy *wiphy, struct wiphy_work *work)
19176 {
19177         struct wireless_dev *wdev = container_of(work, struct wireless_dev,
19178                                                  cqm_rssi_work);
19179         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19180         enum nl80211_cqm_rssi_threshold_event rssi_event;
19181         struct cfg80211_cqm_config *cqm_config;
19182         struct sk_buff *msg;
19183         s32 rssi_level;
19184
19185         cqm_config = wiphy_dereference(wdev->wiphy, wdev->cqm_config);
19186         if (!cqm_config)
19187                 return;
19188
19189         if (cqm_config->use_range_api)
19190                 cfg80211_cqm_rssi_update(rdev, wdev->netdev, cqm_config);
19191
19192         rssi_level = cqm_config->last_rssi_event_value;
19193         rssi_event = cqm_config->last_rssi_event_type;
19194
19195         msg = cfg80211_prepare_cqm(wdev->netdev, NULL, GFP_KERNEL);
19196         if (!msg)
19197                 return;
19198
19199         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
19200                         rssi_event))
19201                 goto nla_put_failure;
19202
19203         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
19204                                       rssi_level))
19205                 goto nla_put_failure;
19206
19207         cfg80211_send_cqm(msg, GFP_KERNEL);
19208
19209         return;
19210
19211  nla_put_failure:
19212         nlmsg_free(msg);
19213 }
19214
19215 void cfg80211_cqm_txe_notify(struct net_device *dev,
19216                              const u8 *peer, u32 num_packets,
19217                              u32 rate, u32 intvl, gfp_t gfp)
19218 {
19219         struct sk_buff *msg;
19220
19221         msg = cfg80211_prepare_cqm(dev, peer, gfp);
19222         if (!msg)
19223                 return;
19224
19225         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
19226                 goto nla_put_failure;
19227
19228         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
19229                 goto nla_put_failure;
19230
19231         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
19232                 goto nla_put_failure;
19233
19234         cfg80211_send_cqm(msg, gfp);
19235         return;
19236
19237  nla_put_failure:
19238         nlmsg_free(msg);
19239 }
19240 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
19241
19242 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
19243                                  const u8 *peer, u32 num_packets, gfp_t gfp)
19244 {
19245         struct sk_buff *msg;
19246
19247         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
19248
19249         msg = cfg80211_prepare_cqm(dev, peer, gfp);
19250         if (!msg)
19251                 return;
19252
19253         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
19254                 goto nla_put_failure;
19255
19256         cfg80211_send_cqm(msg, gfp);
19257         return;
19258
19259  nla_put_failure:
19260         nlmsg_free(msg);
19261 }
19262 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
19263
19264 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
19265 {
19266         struct sk_buff *msg;
19267
19268         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
19269         if (!msg)
19270                 return;
19271
19272         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
19273                 goto nla_put_failure;
19274
19275         cfg80211_send_cqm(msg, gfp);
19276         return;
19277
19278  nla_put_failure:
19279         nlmsg_free(msg);
19280 }
19281 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
19282
19283 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
19284                                      struct net_device *netdev, const u8 *bssid,
19285                                      const u8 *replay_ctr, gfp_t gfp)
19286 {
19287         struct sk_buff *msg;
19288         struct nlattr *rekey_attr;
19289         void *hdr;
19290
19291         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19292         if (!msg)
19293                 return;
19294
19295         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
19296         if (!hdr) {
19297                 nlmsg_free(msg);
19298                 return;
19299         }
19300
19301         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19302             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19303             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
19304                 goto nla_put_failure;
19305
19306         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
19307         if (!rekey_attr)
19308                 goto nla_put_failure;
19309
19310         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
19311                     NL80211_REPLAY_CTR_LEN, replay_ctr))
19312                 goto nla_put_failure;
19313
19314         nla_nest_end(msg, rekey_attr);
19315
19316         genlmsg_end(msg, hdr);
19317
19318         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19319                                 NL80211_MCGRP_MLME, gfp);
19320         return;
19321
19322  nla_put_failure:
19323         nlmsg_free(msg);
19324 }
19325
19326 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
19327                                const u8 *replay_ctr, gfp_t gfp)
19328 {
19329         struct wireless_dev *wdev = dev->ieee80211_ptr;
19330         struct wiphy *wiphy = wdev->wiphy;
19331         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19332
19333         trace_cfg80211_gtk_rekey_notify(dev, bssid);
19334         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
19335 }
19336 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
19337
19338 static void
19339 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
19340                                struct net_device *netdev, int index,
19341                                const u8 *bssid, bool preauth, gfp_t gfp)
19342 {
19343         struct sk_buff *msg;
19344         struct nlattr *attr;
19345         void *hdr;
19346
19347         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19348         if (!msg)
19349                 return;
19350
19351         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
19352         if (!hdr) {
19353                 nlmsg_free(msg);
19354                 return;
19355         }
19356
19357         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19358             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19359                 goto nla_put_failure;
19360
19361         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
19362         if (!attr)
19363                 goto nla_put_failure;
19364
19365         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
19366             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
19367             (preauth &&
19368              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
19369                 goto nla_put_failure;
19370
19371         nla_nest_end(msg, attr);
19372
19373         genlmsg_end(msg, hdr);
19374
19375         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19376                                 NL80211_MCGRP_MLME, gfp);
19377         return;
19378
19379  nla_put_failure:
19380         nlmsg_free(msg);
19381 }
19382
19383 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
19384                                      const u8 *bssid, bool preauth, gfp_t gfp)
19385 {
19386         struct wireless_dev *wdev = dev->ieee80211_ptr;
19387         struct wiphy *wiphy = wdev->wiphy;
19388         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19389
19390         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
19391         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
19392 }
19393 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
19394
19395 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
19396                                      struct net_device *netdev,
19397                                      unsigned int link_id,
19398                                      struct cfg80211_chan_def *chandef,
19399                                      gfp_t gfp,
19400                                      enum nl80211_commands notif,
19401                                      u8 count, bool quiet, u16 punct_bitmap)
19402 {
19403         struct wireless_dev *wdev = netdev->ieee80211_ptr;
19404         struct sk_buff *msg;
19405         void *hdr;
19406
19407         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19408         if (!msg)
19409                 return;
19410
19411         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
19412         if (!hdr) {
19413                 nlmsg_free(msg);
19414                 return;
19415         }
19416
19417         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19418                 goto nla_put_failure;
19419
19420         if (wdev->valid_links &&
19421             nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
19422                 goto nla_put_failure;
19423
19424         if (nl80211_send_chandef(msg, chandef))
19425                 goto nla_put_failure;
19426
19427         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
19428                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
19429                         goto nla_put_failure;
19430                 if (quiet &&
19431                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
19432                         goto nla_put_failure;
19433         }
19434
19435         if (nla_put_u32(msg, NL80211_ATTR_PUNCT_BITMAP, punct_bitmap))
19436                 goto nla_put_failure;
19437
19438         genlmsg_end(msg, hdr);
19439
19440         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19441                                 NL80211_MCGRP_MLME, gfp);
19442         return;
19443
19444  nla_put_failure:
19445         nlmsg_free(msg);
19446 }
19447
19448 void cfg80211_ch_switch_notify(struct net_device *dev,
19449                                struct cfg80211_chan_def *chandef,
19450                                unsigned int link_id, u16 punct_bitmap)
19451 {
19452         struct wireless_dev *wdev = dev->ieee80211_ptr;
19453         struct wiphy *wiphy = wdev->wiphy;
19454         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19455
19456         lockdep_assert_wiphy(wdev->wiphy);
19457         WARN_INVALID_LINK_ID(wdev, link_id);
19458
19459         trace_cfg80211_ch_switch_notify(dev, chandef, link_id, punct_bitmap);
19460
19461         switch (wdev->iftype) {
19462         case NL80211_IFTYPE_STATION:
19463         case NL80211_IFTYPE_P2P_CLIENT:
19464                 if (!WARN_ON(!wdev->links[link_id].client.current_bss))
19465                         cfg80211_update_assoc_bss_entry(wdev, link_id,
19466                                                         chandef->chan);
19467                 break;
19468         case NL80211_IFTYPE_MESH_POINT:
19469                 wdev->u.mesh.chandef = *chandef;
19470                 wdev->u.mesh.preset_chandef = *chandef;
19471                 break;
19472         case NL80211_IFTYPE_AP:
19473         case NL80211_IFTYPE_P2P_GO:
19474                 wdev->links[link_id].ap.chandef = *chandef;
19475                 break;
19476         case NL80211_IFTYPE_ADHOC:
19477                 wdev->u.ibss.chandef = *chandef;
19478                 break;
19479         default:
19480                 WARN_ON(1);
19481                 break;
19482         }
19483
19484         cfg80211_schedule_channels_check(wdev);
19485         cfg80211_sched_dfs_chan_update(rdev);
19486
19487         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19488                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false,
19489                                  punct_bitmap);
19490 }
19491 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
19492
19493 void cfg80211_ch_switch_started_notify(struct net_device *dev,
19494                                        struct cfg80211_chan_def *chandef,
19495                                        unsigned int link_id, u8 count,
19496                                        bool quiet, u16 punct_bitmap)
19497 {
19498         struct wireless_dev *wdev = dev->ieee80211_ptr;
19499         struct wiphy *wiphy = wdev->wiphy;
19500         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19501
19502         lockdep_assert_wiphy(wdev->wiphy);
19503         WARN_INVALID_LINK_ID(wdev, link_id);
19504
19505         trace_cfg80211_ch_switch_started_notify(dev, chandef, link_id,
19506                                                 punct_bitmap);
19507
19508
19509         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19510                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
19511                                  count, quiet, punct_bitmap);
19512 }
19513 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
19514
19515 int cfg80211_bss_color_notify(struct net_device *dev,
19516                               enum nl80211_commands cmd, u8 count,
19517                               u64 color_bitmap)
19518 {
19519         struct wireless_dev *wdev = dev->ieee80211_ptr;
19520         struct wiphy *wiphy = wdev->wiphy;
19521         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19522         struct sk_buff *msg;
19523         void *hdr;
19524
19525         lockdep_assert_wiphy(wdev->wiphy);
19526
19527         trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
19528
19529         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
19530         if (!msg)
19531                 return -ENOMEM;
19532
19533         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
19534         if (!hdr)
19535                 goto nla_put_failure;
19536
19537         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19538                 goto nla_put_failure;
19539
19540         if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
19541             nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
19542                 goto nla_put_failure;
19543
19544         if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
19545             nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
19546                               color_bitmap, NL80211_ATTR_PAD))
19547                 goto nla_put_failure;
19548
19549         genlmsg_end(msg, hdr);
19550
19551         return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
19552                                        msg, 0, NL80211_MCGRP_MLME, GFP_KERNEL);
19553
19554 nla_put_failure:
19555         nlmsg_free(msg);
19556         return -EINVAL;
19557 }
19558 EXPORT_SYMBOL(cfg80211_bss_color_notify);
19559
19560 void
19561 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
19562                      const struct cfg80211_chan_def *chandef,
19563                      enum nl80211_radar_event event,
19564                      struct net_device *netdev, gfp_t gfp)
19565 {
19566         struct sk_buff *msg;
19567         void *hdr;
19568
19569         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19570         if (!msg)
19571                 return;
19572
19573         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
19574         if (!hdr) {
19575                 nlmsg_free(msg);
19576                 return;
19577         }
19578
19579         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19580                 goto nla_put_failure;
19581
19582         /* NOP and radar events don't need a netdev parameter */
19583         if (netdev) {
19584                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
19585
19586                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19587                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19588                                       NL80211_ATTR_PAD))
19589                         goto nla_put_failure;
19590         }
19591
19592         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
19593                 goto nla_put_failure;
19594
19595         if (nl80211_send_chandef(msg, chandef))
19596                 goto nla_put_failure;
19597
19598         genlmsg_end(msg, hdr);
19599
19600         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19601                                 NL80211_MCGRP_MLME, gfp);
19602         return;
19603
19604  nla_put_failure:
19605         nlmsg_free(msg);
19606 }
19607
19608 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
19609                                        struct sta_opmode_info *sta_opmode,
19610                                        gfp_t gfp)
19611 {
19612         struct sk_buff *msg;
19613         struct wireless_dev *wdev = dev->ieee80211_ptr;
19614         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19615         void *hdr;
19616
19617         if (WARN_ON(!mac))
19618                 return;
19619
19620         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19621         if (!msg)
19622                 return;
19623
19624         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
19625         if (!hdr) {
19626                 nlmsg_free(msg);
19627                 return;
19628         }
19629
19630         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19631                 goto nla_put_failure;
19632
19633         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19634                 goto nla_put_failure;
19635
19636         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19637                 goto nla_put_failure;
19638
19639         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
19640             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
19641                 goto nla_put_failure;
19642
19643         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
19644             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
19645                 goto nla_put_failure;
19646
19647         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
19648             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
19649                 goto nla_put_failure;
19650
19651         genlmsg_end(msg, hdr);
19652
19653         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19654                                 NL80211_MCGRP_MLME, gfp);
19655
19656         return;
19657
19658 nla_put_failure:
19659         nlmsg_free(msg);
19660 }
19661 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
19662
19663 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
19664                            u64 cookie, bool acked, s32 ack_signal,
19665                            bool is_valid_ack_signal, gfp_t gfp)
19666 {
19667         struct wireless_dev *wdev = dev->ieee80211_ptr;
19668         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19669         struct sk_buff *msg;
19670         void *hdr;
19671
19672         trace_cfg80211_probe_status(dev, addr, cookie, acked);
19673
19674         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19675
19676         if (!msg)
19677                 return;
19678
19679         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
19680         if (!hdr) {
19681                 nlmsg_free(msg);
19682                 return;
19683         }
19684
19685         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19686             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19687             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19688             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
19689                               NL80211_ATTR_PAD) ||
19690             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
19691             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
19692                                                 ack_signal)))
19693                 goto nla_put_failure;
19694
19695         genlmsg_end(msg, hdr);
19696
19697         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19698                                 NL80211_MCGRP_MLME, gfp);
19699         return;
19700
19701  nla_put_failure:
19702         nlmsg_free(msg);
19703 }
19704 EXPORT_SYMBOL(cfg80211_probe_status);
19705
19706 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
19707                                      size_t len, int freq, int sig_dbm)
19708 {
19709         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19710         struct sk_buff *msg;
19711         void *hdr;
19712         struct cfg80211_beacon_registration *reg;
19713
19714         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
19715
19716         spin_lock_bh(&rdev->beacon_registrations_lock);
19717         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
19718                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
19719                 if (!msg) {
19720                         spin_unlock_bh(&rdev->beacon_registrations_lock);
19721                         return;
19722                 }
19723
19724                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
19725                 if (!hdr)
19726                         goto nla_put_failure;
19727
19728                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19729                     (freq &&
19730                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
19731                                   KHZ_TO_MHZ(freq)) ||
19732                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
19733                                   freq % 1000))) ||
19734                     (sig_dbm &&
19735                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
19736                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
19737                         goto nla_put_failure;
19738
19739                 genlmsg_end(msg, hdr);
19740
19741                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
19742         }
19743         spin_unlock_bh(&rdev->beacon_registrations_lock);
19744         return;
19745
19746  nla_put_failure:
19747         spin_unlock_bh(&rdev->beacon_registrations_lock);
19748         nlmsg_free(msg);
19749 }
19750 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
19751
19752 #ifdef CONFIG_PM
19753 static int cfg80211_net_detect_results(struct sk_buff *msg,
19754                                        struct cfg80211_wowlan_wakeup *wakeup)
19755 {
19756         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
19757         struct nlattr *nl_results, *nl_match, *nl_freqs;
19758         int i, j;
19759
19760         nl_results = nla_nest_start_noflag(msg,
19761                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
19762         if (!nl_results)
19763                 return -EMSGSIZE;
19764
19765         for (i = 0; i < nd->n_matches; i++) {
19766                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
19767
19768                 nl_match = nla_nest_start_noflag(msg, i);
19769                 if (!nl_match)
19770                         break;
19771
19772                 /* The SSID attribute is optional in nl80211, but for
19773                  * simplicity reasons it's always present in the
19774                  * cfg80211 structure.  If a driver can't pass the
19775                  * SSID, that needs to be changed.  A zero length SSID
19776                  * is still a valid SSID (wildcard), so it cannot be
19777                  * used for this purpose.
19778                  */
19779                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
19780                             match->ssid.ssid)) {
19781                         nla_nest_cancel(msg, nl_match);
19782                         goto out;
19783                 }
19784
19785                 if (match->n_channels) {
19786                         nl_freqs = nla_nest_start_noflag(msg,
19787                                                          NL80211_ATTR_SCAN_FREQUENCIES);
19788                         if (!nl_freqs) {
19789                                 nla_nest_cancel(msg, nl_match);
19790                                 goto out;
19791                         }
19792
19793                         for (j = 0; j < match->n_channels; j++) {
19794                                 if (nla_put_u32(msg, j, match->channels[j])) {
19795                                         nla_nest_cancel(msg, nl_freqs);
19796                                         nla_nest_cancel(msg, nl_match);
19797                                         goto out;
19798                                 }
19799                         }
19800
19801                         nla_nest_end(msg, nl_freqs);
19802                 }
19803
19804                 nla_nest_end(msg, nl_match);
19805         }
19806
19807 out:
19808         nla_nest_end(msg, nl_results);
19809         return 0;
19810 }
19811
19812 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
19813                                    struct cfg80211_wowlan_wakeup *wakeup,
19814                                    gfp_t gfp)
19815 {
19816         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19817         struct sk_buff *msg;
19818         void *hdr;
19819         int size = 200;
19820
19821         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
19822
19823         if (wakeup)
19824                 size += wakeup->packet_present_len;
19825
19826         msg = nlmsg_new(size, gfp);
19827         if (!msg)
19828                 return;
19829
19830         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
19831         if (!hdr)
19832                 goto free_msg;
19833
19834         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19835             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19836                               NL80211_ATTR_PAD))
19837                 goto free_msg;
19838
19839         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
19840                                         wdev->netdev->ifindex))
19841                 goto free_msg;
19842
19843         if (wakeup) {
19844                 struct nlattr *reasons;
19845
19846                 reasons = nla_nest_start_noflag(msg,
19847                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
19848                 if (!reasons)
19849                         goto free_msg;
19850
19851                 if (wakeup->disconnect &&
19852                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
19853                         goto free_msg;
19854                 if (wakeup->magic_pkt &&
19855                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
19856                         goto free_msg;
19857                 if (wakeup->gtk_rekey_failure &&
19858                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
19859                         goto free_msg;
19860                 if (wakeup->eap_identity_req &&
19861                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
19862                         goto free_msg;
19863                 if (wakeup->four_way_handshake &&
19864                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
19865                         goto free_msg;
19866                 if (wakeup->rfkill_release &&
19867                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
19868                         goto free_msg;
19869
19870                 if (wakeup->pattern_idx >= 0 &&
19871                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
19872                                 wakeup->pattern_idx))
19873                         goto free_msg;
19874
19875                 if (wakeup->tcp_match &&
19876                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
19877                         goto free_msg;
19878
19879                 if (wakeup->tcp_connlost &&
19880                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
19881                         goto free_msg;
19882
19883                 if (wakeup->tcp_nomoretokens &&
19884                     nla_put_flag(msg,
19885                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
19886                         goto free_msg;
19887
19888                 if (wakeup->packet) {
19889                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
19890                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
19891
19892                         if (!wakeup->packet_80211) {
19893                                 pkt_attr =
19894                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
19895                                 len_attr =
19896                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
19897                         }
19898
19899                         if (wakeup->packet_len &&
19900                             nla_put_u32(msg, len_attr, wakeup->packet_len))
19901                                 goto free_msg;
19902
19903                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
19904                                     wakeup->packet))
19905                                 goto free_msg;
19906                 }
19907
19908                 if (wakeup->net_detect &&
19909                     cfg80211_net_detect_results(msg, wakeup))
19910                                 goto free_msg;
19911
19912                 nla_nest_end(msg, reasons);
19913         }
19914
19915         genlmsg_end(msg, hdr);
19916
19917         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19918                                 NL80211_MCGRP_MLME, gfp);
19919         return;
19920
19921  free_msg:
19922         nlmsg_free(msg);
19923 }
19924 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
19925 #endif
19926
19927 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
19928                                 enum nl80211_tdls_operation oper,
19929                                 u16 reason_code, gfp_t gfp)
19930 {
19931         struct wireless_dev *wdev = dev->ieee80211_ptr;
19932         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19933         struct sk_buff *msg;
19934         void *hdr;
19935
19936         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
19937                                          reason_code);
19938
19939         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19940         if (!msg)
19941                 return;
19942
19943         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
19944         if (!hdr) {
19945                 nlmsg_free(msg);
19946                 return;
19947         }
19948
19949         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19950             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19951             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
19952             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
19953             (reason_code > 0 &&
19954              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
19955                 goto nla_put_failure;
19956
19957         genlmsg_end(msg, hdr);
19958
19959         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19960                                 NL80211_MCGRP_MLME, gfp);
19961         return;
19962
19963  nla_put_failure:
19964         nlmsg_free(msg);
19965 }
19966 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
19967
19968 static int nl80211_netlink_notify(struct notifier_block * nb,
19969                                   unsigned long state,
19970                                   void *_notify)
19971 {
19972         struct netlink_notify *notify = _notify;
19973         struct cfg80211_registered_device *rdev;
19974         struct wireless_dev *wdev;
19975         struct cfg80211_beacon_registration *reg, *tmp;
19976
19977         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
19978                 return NOTIFY_DONE;
19979
19980         rcu_read_lock();
19981
19982         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
19983                 struct cfg80211_sched_scan_request *sched_scan_req;
19984
19985                 list_for_each_entry_rcu(sched_scan_req,
19986                                         &rdev->sched_scan_req_list,
19987                                         list) {
19988                         if (sched_scan_req->owner_nlportid == notify->portid) {
19989                                 sched_scan_req->nl_owner_dead = true;
19990                                 wiphy_work_queue(&rdev->wiphy,
19991                                                  &rdev->sched_scan_stop_wk);
19992                         }
19993                 }
19994
19995                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
19996                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
19997
19998                         if (wdev->owner_nlportid == notify->portid) {
19999                                 wdev->nl_owner_dead = true;
20000                                 schedule_work(&rdev->destroy_work);
20001                         } else if (wdev->conn_owner_nlportid == notify->portid) {
20002                                 schedule_work(&wdev->disconnect_wk);
20003                         }
20004
20005                         cfg80211_release_pmsr(wdev, notify->portid);
20006                 }
20007
20008                 spin_lock_bh(&rdev->beacon_registrations_lock);
20009                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
20010                                          list) {
20011                         if (reg->nlportid == notify->portid) {
20012                                 list_del(&reg->list);
20013                                 kfree(reg);
20014                                 break;
20015                         }
20016                 }
20017                 spin_unlock_bh(&rdev->beacon_registrations_lock);
20018         }
20019
20020         rcu_read_unlock();
20021
20022         /*
20023          * It is possible that the user space process that is controlling the
20024          * indoor setting disappeared, so notify the regulatory core.
20025          */
20026         regulatory_netlink_notify(notify->portid);
20027         return NOTIFY_OK;
20028 }
20029
20030 static struct notifier_block nl80211_netlink_notifier = {
20031         .notifier_call = nl80211_netlink_notify,
20032 };
20033
20034 void cfg80211_ft_event(struct net_device *netdev,
20035                        struct cfg80211_ft_event_params *ft_event)
20036 {
20037         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
20038         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20039         struct sk_buff *msg;
20040         void *hdr;
20041
20042         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
20043
20044         if (!ft_event->target_ap)
20045                 return;
20046
20047         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
20048                         GFP_KERNEL);
20049         if (!msg)
20050                 return;
20051
20052         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
20053         if (!hdr)
20054                 goto out;
20055
20056         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20057             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
20058             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
20059                 goto out;
20060
20061         if (ft_event->ies &&
20062             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
20063                 goto out;
20064         if (ft_event->ric_ies &&
20065             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
20066                     ft_event->ric_ies))
20067                 goto out;
20068
20069         genlmsg_end(msg, hdr);
20070
20071         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
20072                                 NL80211_MCGRP_MLME, GFP_KERNEL);
20073         return;
20074  out:
20075         nlmsg_free(msg);
20076 }
20077 EXPORT_SYMBOL(cfg80211_ft_event);
20078
20079 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
20080 {
20081         struct cfg80211_registered_device *rdev;
20082         struct sk_buff *msg;
20083         void *hdr;
20084         u32 nlportid;
20085
20086         rdev = wiphy_to_rdev(wdev->wiphy);
20087         if (!rdev->crit_proto_nlportid)
20088                 return;
20089
20090         nlportid = rdev->crit_proto_nlportid;
20091         rdev->crit_proto_nlportid = 0;
20092
20093         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20094         if (!msg)
20095                 return;
20096
20097         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
20098         if (!hdr)
20099                 goto nla_put_failure;
20100
20101         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20102             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
20103                               NL80211_ATTR_PAD))
20104                 goto nla_put_failure;
20105
20106         genlmsg_end(msg, hdr);
20107
20108         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
20109         return;
20110
20111  nla_put_failure:
20112         nlmsg_free(msg);
20113 }
20114 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
20115
20116 void nl80211_send_ap_stopped(struct wireless_dev *wdev, unsigned int link_id)
20117 {
20118         struct wiphy *wiphy = wdev->wiphy;
20119         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20120         struct sk_buff *msg;
20121         void *hdr;
20122
20123         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
20124         if (!msg)
20125                 return;
20126
20127         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
20128         if (!hdr)
20129                 goto out;
20130
20131         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20132             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
20133             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
20134                               NL80211_ATTR_PAD) ||
20135             (wdev->valid_links &&
20136              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
20137                 goto out;
20138
20139         genlmsg_end(msg, hdr);
20140
20141         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
20142                                 NL80211_MCGRP_MLME, GFP_KERNEL);
20143         return;
20144  out:
20145         nlmsg_free(msg);
20146 }
20147
20148 int cfg80211_external_auth_request(struct net_device *dev,
20149                                    struct cfg80211_external_auth_params *params,
20150                                    gfp_t gfp)
20151 {
20152         struct wireless_dev *wdev = dev->ieee80211_ptr;
20153         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
20154         struct sk_buff *msg;
20155         void *hdr;
20156
20157         if (!wdev->conn_owner_nlportid)
20158                 return -EINVAL;
20159
20160         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20161         if (!msg)
20162                 return -ENOMEM;
20163
20164         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
20165         if (!hdr)
20166                 goto nla_put_failure;
20167
20168         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20169             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
20170             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
20171             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
20172                         params->action) ||
20173             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
20174             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
20175                     params->ssid.ssid) ||
20176             (!is_zero_ether_addr(params->mld_addr) &&
20177              nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN, params->mld_addr)))
20178                 goto nla_put_failure;
20179
20180         genlmsg_end(msg, hdr);
20181         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
20182                         wdev->conn_owner_nlportid);
20183         return 0;
20184
20185  nla_put_failure:
20186         nlmsg_free(msg);
20187         return -ENOBUFS;
20188 }
20189 EXPORT_SYMBOL(cfg80211_external_auth_request);
20190
20191 void cfg80211_update_owe_info_event(struct net_device *netdev,
20192                                     struct cfg80211_update_owe_info *owe_info,
20193                                     gfp_t gfp)
20194 {
20195         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
20196         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20197         struct sk_buff *msg;
20198         void *hdr;
20199
20200         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
20201
20202         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20203         if (!msg)
20204                 return;
20205
20206         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
20207         if (!hdr)
20208                 goto nla_put_failure;
20209
20210         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20211             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
20212             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
20213                 goto nla_put_failure;
20214
20215         if (!owe_info->ie_len ||
20216             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
20217                 goto nla_put_failure;
20218
20219         if (owe_info->assoc_link_id != -1) {
20220                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
20221                                owe_info->assoc_link_id))
20222                         goto nla_put_failure;
20223
20224                 if (!is_zero_ether_addr(owe_info->peer_mld_addr) &&
20225                     nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
20226                             owe_info->peer_mld_addr))
20227                         goto nla_put_failure;
20228         }
20229
20230         genlmsg_end(msg, hdr);
20231
20232         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
20233                                 NL80211_MCGRP_MLME, gfp);
20234         return;
20235
20236 nla_put_failure:
20237         genlmsg_cancel(msg, hdr);
20238         nlmsg_free(msg);
20239 }
20240 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
20241
20242 void cfg80211_schedule_channels_check(struct wireless_dev *wdev)
20243 {
20244         struct wiphy *wiphy = wdev->wiphy;
20245
20246         /* Schedule channels check if NO_IR or DFS relaxations are supported */
20247         if (wdev->iftype == NL80211_IFTYPE_STATION &&
20248             (wiphy_ext_feature_isset(wiphy,
20249                                      NL80211_EXT_FEATURE_DFS_CONCURRENT) ||
20250             (IS_ENABLED(CONFIG_CFG80211_REG_RELAX_NO_IR) &&
20251              wiphy->regulatory_flags & REGULATORY_ENABLE_RELAX_NO_IR)))
20252                 reg_check_channels();
20253 }
20254 EXPORT_SYMBOL(cfg80211_schedule_channels_check);
20255
20256 /* initialisation/exit functions */
20257
20258 int __init nl80211_init(void)
20259 {
20260         int err;
20261
20262         err = genl_register_family(&nl80211_fam);
20263         if (err)
20264                 return err;
20265
20266         err = netlink_register_notifier(&nl80211_netlink_notifier);
20267         if (err)
20268                 goto err_out;
20269
20270         return 0;
20271  err_out:
20272         genl_unregister_family(&nl80211_fam);
20273         return err;
20274 }
20275
20276 void nl80211_exit(void)
20277 {
20278         netlink_unregister_notifier(&nl80211_netlink_notifier);
20279         genl_unregister_family(&nl80211_fam);
20280 }