net/mac80211/cfg.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * mac80211 configuration hooks for cfg80211
   4  *
   5  * Copyright 2006-2010  Johannes Berg <[email protected]>
   6  * Copyright 2013-2015  Intel Mobile Communications GmbH
   7  * Copyright (C) 2015-2017 Intel Deutschland GmbH
   8  * Copyright (C) 2018-2022 Intel Corporation
   9  */
  10
  11 #include <linux/ieee80211.h>
  12 #include <linux/nl80211.h>
  13 #include <linux/rtnetlink.h>
  14 #include <linux/slab.h>
  15 #include <net/net_namespace.h>
  16 #include <linux/rcupdate.h>
  17 #include <linux/fips.h>
  18 #include <linux/if_ether.h>
  19 #include <net/cfg80211.h>
  20 #include "ieee80211_i.h"
  21 #include "driver-ops.h"
  22 #include "rate.h"
  23 #include "mesh.h"
  24 #include "wme.h"
  25
  26 static struct ieee80211_link_data *
  27 ieee80211_link_or_deflink(struct ieee80211_sub_if_data *sdata, int link_id,
  28                           bool require_valid)
  29 {
  30         struct ieee80211_link_data *link;
  31
  32         if (link_id < 0) {
  33                 /*
  34                  * For keys, if sdata is not an MLD, we might not use
  35                  * the return value at all (if it's not a pairwise key),
  36                  * so in that case (require_valid==false) don't error.
  37                  */
  38                 if (require_valid && sdata->vif.valid_links)
  39                         return ERR_PTR(-EINVAL);
  40
  41                 return &sdata->deflink;
  42         }
  43
  44         link = sdata_dereference(sdata->link[link_id], sdata);
  45         if (!link)
  46                 return ERR_PTR(-ENOLINK);
  47         return link;
  48 }
  49
  50 static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata,
  51                                          struct vif_params *params)
  52 {
  53         bool mu_mimo_groups = false;
  54         bool mu_mimo_follow = false;
  55
  56         if (params->vht_mumimo_groups) {
  57                 u64 membership;
  58
  59                 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN);
  60
  61                 memcpy(sdata->vif.bss_conf.mu_group.membership,
  62                        params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
  63                 memcpy(sdata->vif.bss_conf.mu_group.position,
  64                        params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
  65                        WLAN_USER_POSITION_LEN);
  66                 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
  67                                                   BSS_CHANGED_MU_GROUPS);
  68                 /* don't care about endianness - just check for 0 */
  69                 memcpy(&membership, params->vht_mumimo_groups,
  70                        WLAN_MEMBERSHIP_LEN);
  71                 mu_mimo_groups = membership != 0;
  72         }
  73
  74         if (params->vht_mumimo_follow_addr) {
  75                 mu_mimo_follow =
  76                         is_valid_ether_addr(params->vht_mumimo_follow_addr);
  77                 ether_addr_copy(sdata->u.mntr.mu_follow_addr,
  78                                 params->vht_mumimo_follow_addr);
  79         }
  80
  81         sdata->vif.bss_conf.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow;
  82 }
  83
  84 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata,
  85                                      struct vif_params *params)
  86 {
  87         struct ieee80211_local *local = sdata->local;
  88         struct ieee80211_sub_if_data *monitor_sdata;
  89
  90         /* check flags first */
  91         if (params->flags && ieee80211_sdata_running(sdata)) {
  92                 u32 mask = MONITOR_FLAG_COOK_FRAMES | MONITOR_FLAG_ACTIVE;
  93
  94                 /*
  95                  * Prohibit MONITOR_FLAG_COOK_FRAMES and
  96                  * MONITOR_FLAG_ACTIVE to be changed while the
  97                  * interface is up.
  98                  * Else we would need to add a lot of cruft
  99                  * to update everything:
 100                  *      cooked_mntrs, monitor and all fif_* counters
 101                  *      reconfigure hardware
 102                  */
 103                 if ((params->flags & mask) != (sdata->u.mntr.flags & mask))
 104                         return -EBUSY;
 105         }
 106
 107         /* also validate MU-MIMO change */
 108         monitor_sdata = wiphy_dereference(local->hw.wiphy,
 109                                           local->monitor_sdata);
 110
 111         if (!monitor_sdata &&
 112             (params->vht_mumimo_groups || params->vht_mumimo_follow_addr))
 113                 return -EOPNOTSUPP;
 114
 115         /* apply all changes now - no failures allowed */
 116
 117         if (monitor_sdata)
 118                 ieee80211_set_mu_mimo_follow(monitor_sdata, params);
 119
 120         if (params->flags) {
 121                 if (ieee80211_sdata_running(sdata)) {
 122                         ieee80211_adjust_monitor_flags(sdata, -1);
 123                         sdata->u.mntr.flags = params->flags;
 124                         ieee80211_adjust_monitor_flags(sdata, 1);
 125
 126                         ieee80211_configure_filter(local);
 127                 } else {
 128                         /*
 129                          * Because the interface is down, ieee80211_do_stop
 130                          * and ieee80211_do_open take care of "everything"
 131                          * mentioned in the comment above.
 132                          */
 133                         sdata->u.mntr.flags = params->flags;
 134                 }
 135         }
 136
 137         return 0;
 138 }
 139
 140 static int ieee80211_set_ap_mbssid_options(struct ieee80211_sub_if_data *sdata,
 141                                            struct cfg80211_mbssid_config params,
 142                                            struct ieee80211_bss_conf *link_conf)
 143 {
 144         struct ieee80211_sub_if_data *tx_sdata;
 145
 146         sdata->vif.mbssid_tx_vif = NULL;
 147         link_conf->bssid_index = 0;
 148         link_conf->nontransmitted = false;
 149         link_conf->ema_ap = false;
 150
 151         if (sdata->vif.type != NL80211_IFTYPE_AP || !params.tx_wdev)
 152                 return -EINVAL;
 153
 154         tx_sdata = IEEE80211_WDEV_TO_SUB_IF(params.tx_wdev);
 155         if (!tx_sdata)
 156                 return -EINVAL;
 157
 158         if (tx_sdata == sdata) {
 159                 sdata->vif.mbssid_tx_vif = &sdata->vif;
 160         } else {
 161                 sdata->vif.mbssid_tx_vif = &tx_sdata->vif;
 162                 link_conf->nontransmitted = true;
 163                 link_conf->bssid_index = params.index;
 164         }
 165         if (params.ema)
 166                 link_conf->ema_ap = true;
 167
 168         return 0;
 169 }
 170
 171 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
 172                                                 const char *name,
 173                                                 unsigned char name_assign_type,
 174                                                 enum nl80211_iftype type,
 175                                                 struct vif_params *params)
 176 {
 177         struct ieee80211_local *local = wiphy_priv(wiphy);
 178         struct wireless_dev *wdev;
 179         struct ieee80211_sub_if_data *sdata;
 180         int err;
 181
 182         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
 183         if (err)
 184                 return ERR_PTR(err);
 185
 186         sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 187
 188         if (type == NL80211_IFTYPE_MONITOR) {
 189                 err = ieee80211_set_mon_options(sdata, params);
 190                 if (err) {
 191                         ieee80211_if_remove(sdata);
 192                         return NULL;
 193                 }
 194         }
 195
 196         return wdev;
 197 }
 198
 199 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
 200 {
 201         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
 202
 203         return 0;
 204 }
 205
 206 static int ieee80211_change_iface(struct wiphy *wiphy,
 207                                   struct net_device *dev,
 208                                   enum nl80211_iftype type,
 209                                   struct vif_params *params)
 210 {
 211         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 212         struct ieee80211_local *local = sdata->local;
 213         struct sta_info *sta;
 214         int ret;
 215
 216         ret = ieee80211_if_change_type(sdata, type);
 217         if (ret)
 218                 return ret;
 219
 220         if (type == NL80211_IFTYPE_AP_VLAN && params->use_4addr == 0) {
 221                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
 222                 ieee80211_check_fast_rx_iface(sdata);
 223         } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) {
 224                 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 225
 226                 if (params->use_4addr == ifmgd->use_4addr)
 227                         return 0;
 228
 229                 /* FIXME: no support for 4-addr MLO yet */
 230                 if (sdata->vif.valid_links)
 231                         return -EOPNOTSUPP;
 232
 233                 sdata->u.mgd.use_4addr = params->use_4addr;
 234                 if (!ifmgd->associated)
 235                         return 0;
 236
 237                 mutex_lock(&local->sta_mtx);
 238                 sta = sta_info_get(sdata, sdata->deflink.u.mgd.bssid);
 239                 if (sta)
 240                         drv_sta_set_4addr(local, sdata, &sta->sta,
 241                                           params->use_4addr);
 242                 mutex_unlock(&local->sta_mtx);
 243
 244                 if (params->use_4addr)
 245                         ieee80211_send_4addr_nullfunc(local, sdata);
 246         }
 247
 248         if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
 249                 ret = ieee80211_set_mon_options(sdata, params);
 250                 if (ret)
 251                         return ret;
 252         }
 253
 254         return 0;
 255 }
 256
 257 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 258                                       struct wireless_dev *wdev)
 259 {
 260         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 261         int ret;
 262
 263         mutex_lock(&sdata->local->chanctx_mtx);
 264         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 265         mutex_unlock(&sdata->local->chanctx_mtx);
 266         if (ret < 0)
 267                 return ret;
 268
 269         return ieee80211_do_open(wdev, true);
 270 }
 271
 272 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 273                                       struct wireless_dev *wdev)
 274 {
 275         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 276 }
 277
 278 static int ieee80211_start_nan(struct wiphy *wiphy,
 279                                struct wireless_dev *wdev,
 280                                struct cfg80211_nan_conf *conf)
 281 {
 282         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 283         int ret;
 284
 285         mutex_lock(&sdata->local->chanctx_mtx);
 286         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 287         mutex_unlock(&sdata->local->chanctx_mtx);
 288         if (ret < 0)
 289                 return ret;
 290
 291         ret = ieee80211_do_open(wdev, true);
 292         if (ret)
 293                 return ret;
 294
 295         ret = drv_start_nan(sdata->local, sdata, conf);
 296         if (ret)
 297                 ieee80211_sdata_stop(sdata);
 298
 299         sdata->u.nan.conf = *conf;
 300
 301         return ret;
 302 }
 303
 304 static void ieee80211_stop_nan(struct wiphy *wiphy,
 305                                struct wireless_dev *wdev)
 306 {
 307         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 308
 309         drv_stop_nan(sdata->local, sdata);
 310         ieee80211_sdata_stop(sdata);
 311 }
 312
 313 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
 314                                      struct wireless_dev *wdev,
 315                                      struct cfg80211_nan_conf *conf,
 316                                      u32 changes)
 317 {
 318         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 319         struct cfg80211_nan_conf new_conf;
 320         int ret = 0;
 321
 322         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 323                 return -EOPNOTSUPP;
 324
 325         if (!ieee80211_sdata_running(sdata))
 326                 return -ENETDOWN;
 327
 328         new_conf = sdata->u.nan.conf;
 329
 330         if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
 331                 new_conf.master_pref = conf->master_pref;
 332
 333         if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
 334                 new_conf.bands = conf->bands;
 335
 336         ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
 337         if (!ret)
 338                 sdata->u.nan.conf = new_conf;
 339
 340         return ret;
 341 }
 342
 343 static int ieee80211_add_nan_func(struct wiphy *wiphy,
 344                                   struct wireless_dev *wdev,
 345                                   struct cfg80211_nan_func *nan_func)
 346 {
 347         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 348         int ret;
 349
 350         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 351                 return -EOPNOTSUPP;
 352
 353         if (!ieee80211_sdata_running(sdata))
 354                 return -ENETDOWN;
 355
 356         spin_lock_bh(&sdata->u.nan.func_lock);
 357
 358         ret = idr_alloc(&sdata->u.nan.function_inst_ids,
 359                         nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
 360                         GFP_ATOMIC);
 361         spin_unlock_bh(&sdata->u.nan.func_lock);
 362
 363         if (ret < 0)
 364                 return ret;
 365
 366         nan_func->instance_id = ret;
 367
 368         WARN_ON(nan_func->instance_id == 0);
 369
 370         ret = drv_add_nan_func(sdata->local, sdata, nan_func);
 371         if (ret) {
 372                 spin_lock_bh(&sdata->u.nan.func_lock);
 373                 idr_remove(&sdata->u.nan.function_inst_ids,
 374                            nan_func->instance_id);
 375                 spin_unlock_bh(&sdata->u.nan.func_lock);
 376         }
 377
 378         return ret;
 379 }
 380
 381 static struct cfg80211_nan_func *
 382 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
 383                                   u64 cookie)
 384 {
 385         struct cfg80211_nan_func *func;
 386         int id;
 387
 388         lockdep_assert_held(&sdata->u.nan.func_lock);
 389
 390         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
 391                 if (func->cookie == cookie)
 392                         return func;
 393         }
 394
 395         return NULL;
 396 }
 397
 398 static void ieee80211_del_nan_func(struct wiphy *wiphy,
 399                                   struct wireless_dev *wdev, u64 cookie)
 400 {
 401         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 402         struct cfg80211_nan_func *func;
 403         u8 instance_id = 0;
 404
 405         if (sdata->vif.type != NL80211_IFTYPE_NAN ||
 406             !ieee80211_sdata_running(sdata))
 407                 return;
 408
 409         spin_lock_bh(&sdata->u.nan.func_lock);
 410
 411         func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
 412         if (func)
 413                 instance_id = func->instance_id;
 414
 415         spin_unlock_bh(&sdata->u.nan.func_lock);
 416
 417         if (instance_id)
 418                 drv_del_nan_func(sdata->local, sdata, instance_id);
 419 }
 420
 421 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 422                                   struct net_device *dev,
 423                                   u16 noack_map)
 424 {
 425         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 426
 427         sdata->noack_map = noack_map;
 428
 429         ieee80211_check_fast_xmit_iface(sdata);
 430
 431         return 0;
 432 }
 433
 434 static int ieee80211_set_tx(struct ieee80211_sub_if_data *sdata,
 435                             const u8 *mac_addr, u8 key_idx)
 436 {
 437         struct ieee80211_local *local = sdata->local;
 438         struct ieee80211_key *key;
 439         struct sta_info *sta;
 440         int ret = -EINVAL;
 441
 442         if (!wiphy_ext_feature_isset(local->hw.wiphy,
 443                                      NL80211_EXT_FEATURE_EXT_KEY_ID))
 444                 return -EINVAL;
 445
 446         sta = sta_info_get_bss(sdata, mac_addr);
 447
 448         if (!sta)
 449                 return -EINVAL;
 450
 451         if (sta->ptk_idx == key_idx)
 452                 return 0;
 453
 454         mutex_lock(&local->key_mtx);
 455         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 456
 457         if (key && key->conf.flags & IEEE80211_KEY_FLAG_NO_AUTO_TX)
 458                 ret = ieee80211_set_tx_key(key);
 459
 460         mutex_unlock(&local->key_mtx);
 461         return ret;
 462 }
 463
 464 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 465                              int link_id, u8 key_idx, bool pairwise,
 466                              const u8 *mac_addr, struct key_params *params)
 467 {
 468         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 469         struct ieee80211_link_data *link =
 470                 ieee80211_link_or_deflink(sdata, link_id, false);
 471         struct ieee80211_local *local = sdata->local;
 472         struct sta_info *sta = NULL;
 473         struct ieee80211_key *key;
 474         int err;
 475
 476         if (!ieee80211_sdata_running(sdata))
 477                 return -ENETDOWN;
 478
 479         if (IS_ERR(link))
 480                 return PTR_ERR(link);
 481
 482         if (pairwise && params->mode == NL80211_KEY_SET_TX)
 483                 return ieee80211_set_tx(sdata, mac_addr, key_idx);
 484
 485         /* reject WEP and TKIP keys if WEP failed to initialize */
 486         switch (params->cipher) {
 487         case WLAN_CIPHER_SUITE_WEP40:
 488         case WLAN_CIPHER_SUITE_TKIP:
 489         case WLAN_CIPHER_SUITE_WEP104:
 490                 if (link_id >= 0)
 491                         return -EINVAL;
 492                 if (WARN_ON_ONCE(fips_enabled))
 493                         return -EINVAL;
 494                 break;
 495         default:
 496                 break;
 497         }
 498
 499         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 500                                   params->key, params->seq_len, params->seq);
 501         if (IS_ERR(key))
 502                 return PTR_ERR(key);
 503
 504         key->conf.link_id = link_id;
 505
 506         if (pairwise)
 507                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 508
 509         if (params->mode == NL80211_KEY_NO_TX)
 510                 key->conf.flags |= IEEE80211_KEY_FLAG_NO_AUTO_TX;
 511
 512         mutex_lock(&local->sta_mtx);
 513
 514         if (mac_addr) {
 515                 sta = sta_info_get_bss(sdata, mac_addr);
 516                 /*
 517                  * The ASSOC test makes sure the driver is ready to
 518                  * receive the key. When wpa_supplicant has roamed
 519                  * using FT, it attempts to set the key before
 520                  * association has completed, this rejects that attempt
 521                  * so it will set the key again after association.
 522                  *
 523                  * TODO: accept the key if we have a station entry and
 524                  *       add it to the device after the station.
 525                  */
 526                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 527                         ieee80211_key_free_unused(key);
 528                         err = -ENOENT;
 529                         goto out_unlock;
 530                 }
 531         }
 532
 533         switch (sdata->vif.type) {
 534         case NL80211_IFTYPE_STATION:
 535                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 536                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 537                 break;
 538         case NL80211_IFTYPE_AP:
 539         case NL80211_IFTYPE_AP_VLAN:
 540                 /* Keys without a station are used for TX only */
 541                 if (sta && test_sta_flag(sta, WLAN_STA_MFP))
 542                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 543                 break;
 544         case NL80211_IFTYPE_ADHOC:
 545                 /* no MFP (yet) */
 546                 break;
 547         case NL80211_IFTYPE_MESH_POINT:
 548 #ifdef CONFIG_MAC80211_MESH
 549                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 550                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 551                 break;
 552 #endif
 553         case NL80211_IFTYPE_WDS:
 554         case NL80211_IFTYPE_MONITOR:
 555         case NL80211_IFTYPE_P2P_DEVICE:
 556         case NL80211_IFTYPE_NAN:
 557         case NL80211_IFTYPE_UNSPECIFIED:
 558         case NUM_NL80211_IFTYPES:
 559         case NL80211_IFTYPE_P2P_CLIENT:
 560         case NL80211_IFTYPE_P2P_GO:
 561         case NL80211_IFTYPE_OCB:
 562                 /* shouldn't happen */
 563                 WARN_ON_ONCE(1);
 564                 break;
 565         }
 566
 567         err = ieee80211_key_link(key, link, sta);
 568
 569  out_unlock:
 570         mutex_unlock(&local->sta_mtx);
 571
 572         return err;
 573 }
 574
 575 static struct ieee80211_key *
 576 ieee80211_lookup_key(struct ieee80211_sub_if_data *sdata, int link_id,
 577                      u8 key_idx, bool pairwise, const u8 *mac_addr)
 578 {
 579         struct ieee80211_local *local __maybe_unused = sdata->local;
 580         struct ieee80211_link_data *link = &sdata->deflink;
 581         struct ieee80211_key *key;
 582
 583         if (link_id >= 0) {
 584                 link = rcu_dereference_check(sdata->link[link_id],
 585                                              lockdep_is_held(&sdata->wdev.mtx));
 586                 if (!link)
 587                         return NULL;
 588         }
 589
 590         if (mac_addr) {
 591                 struct sta_info *sta;
 592                 struct link_sta_info *link_sta;
 593
 594                 sta = sta_info_get_bss(sdata, mac_addr);
 595                 if (!sta)
 596                         return NULL;
 597
 598                 if (link_id >= 0) {
 599                         link_sta = rcu_dereference_check(sta->link[link_id],
 600                                                          lockdep_is_held(&local->sta_mtx));
 601                         if (!link_sta)
 602                                 return NULL;
 603                 } else {
 604                         link_sta = &sta->deflink;
 605                 }
 606
 607                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 608                         return rcu_dereference_check_key_mtx(local,
 609                                                              sta->ptk[key_idx]);
 610
 611                 if (!pairwise &&
 612                     key_idx < NUM_DEFAULT_KEYS +
 613                               NUM_DEFAULT_MGMT_KEYS +
 614                               NUM_DEFAULT_BEACON_KEYS)
 615                         return rcu_dereference_check_key_mtx(local,
 616                                                              link_sta->gtk[key_idx]);
 617
 618                 return NULL;
 619         }
 620
 621         if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 622                 return rcu_dereference_check_key_mtx(local,
 623                                                      sdata->keys[key_idx]);
 624
 625         key = rcu_dereference_check_key_mtx(local, link->gtk[key_idx]);
 626         if (key)
 627                 return key;
 628
 629         /* or maybe it was a WEP key */
 630         if (key_idx < NUM_DEFAULT_KEYS)
 631                 return rcu_dereference_check_key_mtx(local, sdata->keys[key_idx]);
 632
 633         return NULL;
 634 }
 635
 636 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 637                              int link_id, u8 key_idx, bool pairwise,
 638                              const u8 *mac_addr)
 639 {
 640         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 641         struct ieee80211_local *local = sdata->local;
 642         struct ieee80211_key *key;
 643         int ret;
 644
 645         mutex_lock(&local->sta_mtx);
 646         mutex_lock(&local->key_mtx);
 647
 648         key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr);
 649         if (!key) {
 650                 ret = -ENOENT;
 651                 goto out_unlock;
 652         }
 653
 654         ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION);
 655
 656         ret = 0;
 657  out_unlock:
 658         mutex_unlock(&local->key_mtx);
 659         mutex_unlock(&local->sta_mtx);
 660
 661         return ret;
 662 }
 663
 664 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 665                              int link_id, u8 key_idx, bool pairwise,
 666                              const u8 *mac_addr, void *cookie,
 667                              void (*callback)(void *cookie,
 668                                               struct key_params *params))
 669 {
 670         struct ieee80211_sub_if_data *sdata;
 671         u8 seq[6] = {0};
 672         struct key_params params;
 673         struct ieee80211_key *key;
 674         u64 pn64;
 675         u32 iv32;
 676         u16 iv16;
 677         int err = -ENOENT;
 678         struct ieee80211_key_seq kseq = {};
 679
 680         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 681
 682         rcu_read_lock();
 683
 684         key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr);
 685         if (!key)
 686                 goto out;
 687
 688         memset(&params, 0, sizeof(params));
 689
 690         params.cipher = key->conf.cipher;
 691
 692         switch (key->conf.cipher) {
 693         case WLAN_CIPHER_SUITE_TKIP:
 694                 pn64 = atomic64_read(&key->conf.tx_pn);
 695                 iv32 = TKIP_PN_TO_IV32(pn64);
 696                 iv16 = TKIP_PN_TO_IV16(pn64);
 697
 698                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 699                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 700                         drv_get_key_seq(sdata->local, key, &kseq);
 701                         iv32 = kseq.tkip.iv32;
 702                         iv16 = kseq.tkip.iv16;
 703                 }
 704
 705                 seq[0] = iv16 & 0xff;
 706                 seq[1] = (iv16 >> 8) & 0xff;
 707                 seq[2] = iv32 & 0xff;
 708                 seq[3] = (iv32 >> 8) & 0xff;
 709                 seq[4] = (iv32 >> 16) & 0xff;
 710                 seq[5] = (iv32 >> 24) & 0xff;
 711                 params.seq = seq;
 712                 params.seq_len = 6;
 713                 break;
 714         case WLAN_CIPHER_SUITE_CCMP:
 715         case WLAN_CIPHER_SUITE_CCMP_256:
 716         case WLAN_CIPHER_SUITE_AES_CMAC:
 717         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 718                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 719                              offsetof(typeof(kseq), aes_cmac));
 720                 fallthrough;
 721         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 722         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 723                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 724                              offsetof(typeof(kseq), aes_gmac));
 725                 fallthrough;
 726         case WLAN_CIPHER_SUITE_GCMP:
 727         case WLAN_CIPHER_SUITE_GCMP_256:
 728                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 729                              offsetof(typeof(kseq), gcmp));
 730
 731                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 732                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 733                         drv_get_key_seq(sdata->local, key, &kseq);
 734                         memcpy(seq, kseq.ccmp.pn, 6);
 735                 } else {
 736                         pn64 = atomic64_read(&key->conf.tx_pn);
 737                         seq[0] = pn64;
 738                         seq[1] = pn64 >> 8;
 739                         seq[2] = pn64 >> 16;
 740                         seq[3] = pn64 >> 24;
 741                         seq[4] = pn64 >> 32;
 742                         seq[5] = pn64 >> 40;
 743                 }
 744                 params.seq = seq;
 745                 params.seq_len = 6;
 746                 break;
 747         default:
 748                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 749                         break;
 750                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 751                         break;
 752                 drv_get_key_seq(sdata->local, key, &kseq);
 753                 params.seq = kseq.hw.seq;
 754                 params.seq_len = kseq.hw.seq_len;
 755                 break;
 756         }
 757
 758         params.key = key->conf.key;
 759         params.key_len = key->conf.keylen;
 760
 761         callback(cookie, &params);
 762         err = 0;
 763
 764  out:
 765         rcu_read_unlock();
 766         return err;
 767 }
 768
 769 static int ieee80211_config_default_key(struct wiphy *wiphy,
 770                                         struct net_device *dev,
 771                                         int link_id, u8 key_idx, bool uni,
 772                                         bool multi)
 773 {
 774         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 775         struct ieee80211_link_data *link =
 776                 ieee80211_link_or_deflink(sdata, link_id, false);
 777
 778         if (IS_ERR(link))
 779                 return PTR_ERR(link);
 780
 781         ieee80211_set_default_key(link, key_idx, uni, multi);
 782
 783         return 0;
 784 }
 785
 786 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 787                                              struct net_device *dev,
 788                                              int link_id, u8 key_idx)
 789 {
 790         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 791         struct ieee80211_link_data *link =
 792                 ieee80211_link_or_deflink(sdata, link_id, true);
 793
 794         if (IS_ERR(link))
 795                 return PTR_ERR(link);
 796
 797         ieee80211_set_default_mgmt_key(link, key_idx);
 798
 799         return 0;
 800 }
 801
 802 static int ieee80211_config_default_beacon_key(struct wiphy *wiphy,
 803                                                struct net_device *dev,
 804                                                int link_id, u8 key_idx)
 805 {
 806         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 807         struct ieee80211_link_data *link =
 808                 ieee80211_link_or_deflink(sdata, link_id, true);
 809
 810         if (IS_ERR(link))
 811                 return PTR_ERR(link);
 812
 813         ieee80211_set_default_beacon_key(link, key_idx);
 814
 815         return 0;
 816 }
 817
 818 void sta_set_rate_info_tx(struct sta_info *sta,
 819                           const struct ieee80211_tx_rate *rate,
 820                           struct rate_info *rinfo)
 821 {
 822         rinfo->flags = 0;
 823         if (rate->flags & IEEE80211_TX_RC_MCS) {
 824                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 825                 rinfo->mcs = rate->idx;
 826         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 827                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 828                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 829                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 830         } else {
 831                 struct ieee80211_supported_band *sband;
 832                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 833                 u16 brate;
 834
 835                 sband = ieee80211_get_sband(sta->sdata);
 836                 WARN_ON_ONCE(sband && !sband->bitrates);
 837                 if (sband && sband->bitrates) {
 838                         brate = sband->bitrates[rate->idx].bitrate;
 839                         rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 840                 }
 841         }
 842         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 843                 rinfo->bw = RATE_INFO_BW_40;
 844         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 845                 rinfo->bw = RATE_INFO_BW_80;
 846         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 847                 rinfo->bw = RATE_INFO_BW_160;
 848         else
 849                 rinfo->bw = RATE_INFO_BW_20;
 850         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 851                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 852 }
 853
 854 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 855                                   int idx, u8 *mac, struct station_info *sinfo)
 856 {
 857         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 858         struct ieee80211_local *local = sdata->local;
 859         struct sta_info *sta;
 860         int ret = -ENOENT;
 861
 862         mutex_lock(&local->sta_mtx);
 863
 864         sta = sta_info_get_by_idx(sdata, idx);
 865         if (sta) {
 866                 ret = 0;
 867                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 868                 sta_set_sinfo(sta, sinfo, true);
 869         }
 870
 871         mutex_unlock(&local->sta_mtx);
 872
 873         return ret;
 874 }
 875
 876 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 877                                  int idx, struct survey_info *survey)
 878 {
 879         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 880
 881         return drv_get_survey(local, idx, survey);
 882 }
 883
 884 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 885                                  const u8 *mac, struct station_info *sinfo)
 886 {
 887         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 888         struct ieee80211_local *local = sdata->local;
 889         struct sta_info *sta;
 890         int ret = -ENOENT;
 891
 892         mutex_lock(&local->sta_mtx);
 893
 894         sta = sta_info_get_bss(sdata, mac);
 895         if (sta) {
 896                 ret = 0;
 897                 sta_set_sinfo(sta, sinfo, true);
 898         }
 899
 900         mutex_unlock(&local->sta_mtx);
 901
 902         return ret;
 903 }
 904
 905 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 906                                          struct cfg80211_chan_def *chandef)
 907 {
 908         struct ieee80211_local *local = wiphy_priv(wiphy);
 909         struct ieee80211_sub_if_data *sdata;
 910         int ret = 0;
 911
 912         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 913                 return 0;
 914
 915         mutex_lock(&local->mtx);
 916         if (local->use_chanctx) {
 917                 sdata = wiphy_dereference(local->hw.wiphy,
 918                                           local->monitor_sdata);
 919                 if (sdata) {
 920                         ieee80211_link_release_channel(&sdata->deflink);
 921                         ret = ieee80211_link_use_channel(&sdata->deflink,
 922                                                          chandef,
 923                                                          IEEE80211_CHANCTX_EXCLUSIVE);
 924                 }
 925         } else if (local->open_count == local->monitors) {
 926                 local->_oper_chandef = *chandef;
 927                 ieee80211_hw_config(local, 0);
 928         }
 929
 930         if (ret == 0)
 931                 local->monitor_chandef = *chandef;
 932         mutex_unlock(&local->mtx);
 933
 934         return ret;
 935 }
 936
 937 static int
 938 ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 939                          const u8 *resp, size_t resp_len,
 940                          const struct ieee80211_csa_settings *csa,
 941                          const struct ieee80211_color_change_settings *cca,
 942                          struct ieee80211_link_data *link)
 943 {
 944         struct probe_resp *new, *old;
 945
 946         if (!resp || !resp_len)
 947                 return 1;
 948
 949         old = sdata_dereference(link->u.ap.probe_resp, sdata);
 950
 951         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 952         if (!new)
 953                 return -ENOMEM;
 954
 955         new->len = resp_len;
 956         memcpy(new->data, resp, resp_len);
 957
 958         if (csa)
 959                 memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_presp,
 960                        csa->n_counter_offsets_presp *
 961                        sizeof(new->cntdwn_counter_offsets[0]));
 962         else if (cca)
 963                 new->cntdwn_counter_offsets[0] = cca->counter_offset_presp;
 964
 965         rcu_assign_pointer(link->u.ap.probe_resp, new);
 966         if (old)
 967                 kfree_rcu(old, rcu_head);
 968
 969         return 0;
 970 }
 971
 972 static int ieee80211_set_fils_discovery(struct ieee80211_sub_if_data *sdata,
 973                                         struct cfg80211_fils_discovery *params,
 974                                         struct ieee80211_link_data *link,
 975                                         struct ieee80211_bss_conf *link_conf)
 976 {
 977         struct fils_discovery_data *new, *old = NULL;
 978         struct ieee80211_fils_discovery *fd;
 979
 980         if (!params->tmpl || !params->tmpl_len)
 981                 return -EINVAL;
 982
 983         fd = &link_conf->fils_discovery;
 984         fd->min_interval = params->min_interval;
 985         fd->max_interval = params->max_interval;
 986
 987         old = sdata_dereference(link->u.ap.fils_discovery, sdata);
 988         new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL);
 989         if (!new)
 990                 return -ENOMEM;
 991         new->len = params->tmpl_len;
 992         memcpy(new->data, params->tmpl, params->tmpl_len);
 993         rcu_assign_pointer(link->u.ap.fils_discovery, new);
 994
 995         if (old)
 996                 kfree_rcu(old, rcu_head);
 997
 998         return 0;
 999 }
1000
1001 static int
1002 ieee80211_set_unsol_bcast_probe_resp(struct ieee80211_sub_if_data *sdata,
1003                                      struct cfg80211_unsol_bcast_probe_resp *params,
1004                                      struct ieee80211_link_data *link,
1005                                      struct ieee80211_bss_conf *link_conf)
1006 {
1007         struct unsol_bcast_probe_resp_data *new, *old = NULL;
1008
1009         if (!params->tmpl || !params->tmpl_len)
1010                 return -EINVAL;
1011
1012         old = sdata_dereference(link->u.ap.unsol_bcast_probe_resp, sdata);
1013         new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL);
1014         if (!new)
1015                 return -ENOMEM;
1016         new->len = params->tmpl_len;
1017         memcpy(new->data, params->tmpl, params->tmpl_len);
1018         rcu_assign_pointer(link->u.ap.unsol_bcast_probe_resp, new);
1019
1020         if (old)
1021                 kfree_rcu(old, rcu_head);
1022
1023         link_conf->unsol_bcast_probe_resp_interval = params->interval;
1024
1025         return 0;
1026 }
1027
1028 static int ieee80211_set_ftm_responder_params(
1029                                 struct ieee80211_sub_if_data *sdata,
1030                                 const u8 *lci, size_t lci_len,
1031                                 const u8 *civicloc, size_t civicloc_len,
1032                                 struct ieee80211_bss_conf *link_conf)
1033 {
1034         struct ieee80211_ftm_responder_params *new, *old;
1035         u8 *pos;
1036         int len;
1037
1038         if (!lci_len && !civicloc_len)
1039                 return 0;
1040
1041         old = link_conf->ftmr_params;
1042         len = lci_len + civicloc_len;
1043
1044         new = kzalloc(sizeof(*new) + len, GFP_KERNEL);
1045         if (!new)
1046                 return -ENOMEM;
1047
1048         pos = (u8 *)(new + 1);
1049         if (lci_len) {
1050                 new->lci_len = lci_len;
1051                 new->lci = pos;
1052                 memcpy(pos, lci, lci_len);
1053                 pos += lci_len;
1054         }
1055
1056         if (civicloc_len) {
1057                 new->civicloc_len = civicloc_len;
1058                 new->civicloc = pos;
1059                 memcpy(pos, civicloc, civicloc_len);
1060                 pos += civicloc_len;
1061         }
1062
1063         link_conf->ftmr_params = new;
1064         kfree(old);
1065
1066         return 0;
1067 }
1068
1069 static int
1070 ieee80211_copy_mbssid_beacon(u8 *pos, struct cfg80211_mbssid_elems *dst,
1071                              struct cfg80211_mbssid_elems *src)
1072 {
1073         int i, offset = 0;
1074
1075         for (i = 0; i < src->cnt; i++) {
1076                 memcpy(pos + offset, src->elem[i].data, src->elem[i].len);
1077                 dst->elem[i].len = src->elem[i].len;
1078                 dst->elem[i].data = pos + offset;
1079                 offset += dst->elem[i].len;
1080         }
1081         dst->cnt = src->cnt;
1082
1083         return offset;
1084 }
1085
1086 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
1087                                    struct ieee80211_link_data *link,
1088                                    struct cfg80211_beacon_data *params,
1089                                    const struct ieee80211_csa_settings *csa,
1090                                    const struct ieee80211_color_change_settings *cca)
1091 {
1092         struct cfg80211_mbssid_elems *mbssid = NULL;
1093         struct beacon_data *new, *old;
1094         int new_head_len, new_tail_len;
1095         int size, err;
1096         u32 changed = BSS_CHANGED_BEACON;
1097         struct ieee80211_bss_conf *link_conf = link->conf;
1098
1099         old = sdata_dereference(link->u.ap.beacon, sdata);
1100
1101         /* Need to have a beacon head if we don't have one yet */
1102         if (!params->head && !old)
1103                 return -EINVAL;
1104
1105         /* new or old head? */
1106         if (params->head)
1107                 new_head_len = params->head_len;
1108         else
1109                 new_head_len = old->head_len;
1110
1111         /* new or old tail? */
1112         if (params->tail || !old)
1113                 /* params->tail_len will be zero for !params->tail */
1114                 new_tail_len = params->tail_len;
1115         else
1116                 new_tail_len = old->tail_len;
1117
1118         size = sizeof(*new) + new_head_len + new_tail_len;
1119
1120         /* new or old multiple BSSID elements? */
1121         if (params->mbssid_ies) {
1122                 mbssid = params->mbssid_ies;
1123                 size += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1124                 size += ieee80211_get_mbssid_beacon_len(mbssid);
1125         } else if (old && old->mbssid_ies) {
1126                 mbssid = old->mbssid_ies;
1127                 size += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1128                 size += ieee80211_get_mbssid_beacon_len(mbssid);
1129         }
1130
1131         new = kzalloc(size, GFP_KERNEL);
1132         if (!new)
1133                 return -ENOMEM;
1134
1135         /* start filling the new info now */
1136
1137         /*
1138          * pointers go into the block we allocated,
1139          * memory is | beacon_data | head | tail | mbssid_ies
1140          */
1141         new->head = ((u8 *) new) + sizeof(*new);
1142         new->tail = new->head + new_head_len;
1143         new->head_len = new_head_len;
1144         new->tail_len = new_tail_len;
1145         /* copy in optional mbssid_ies */
1146         if (mbssid) {
1147                 u8 *pos = new->tail + new->tail_len;
1148
1149                 new->mbssid_ies = (void *)pos;
1150                 pos += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1151                 ieee80211_copy_mbssid_beacon(pos, new->mbssid_ies, mbssid);
1152                 /* update bssid_indicator */
1153                 link_conf->bssid_indicator =
1154                         ilog2(__roundup_pow_of_two(mbssid->cnt + 1));
1155         }
1156
1157         if (csa) {
1158                 new->cntdwn_current_counter = csa->count;
1159                 memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_beacon,
1160                        csa->n_counter_offsets_beacon *
1161                        sizeof(new->cntdwn_counter_offsets[0]));
1162         } else if (cca) {
1163                 new->cntdwn_current_counter = cca->count;
1164                 new->cntdwn_counter_offsets[0] = cca->counter_offset_beacon;
1165         }
1166
1167         /* copy in head */
1168         if (params->head)
1169                 memcpy(new->head, params->head, new_head_len);
1170         else
1171                 memcpy(new->head, old->head, new_head_len);
1172
1173         /* copy in optional tail */
1174         if (params->tail)
1175                 memcpy(new->tail, params->tail, new_tail_len);
1176         else
1177                 if (old)
1178                         memcpy(new->tail, old->tail, new_tail_len);
1179
1180         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
1181                                        params->probe_resp_len, csa, cca, link);
1182         if (err < 0) {
1183                 kfree(new);
1184                 return err;
1185         }
1186         if (err == 0)
1187                 changed |= BSS_CHANGED_AP_PROBE_RESP;
1188
1189         if (params->ftm_responder != -1) {
1190                 link_conf->ftm_responder = params->ftm_responder;
1191                 err = ieee80211_set_ftm_responder_params(sdata,
1192                                                          params->lci,
1193                                                          params->lci_len,
1194                                                          params->civicloc,
1195                                                          params->civicloc_len,
1196                                                          link_conf);
1197
1198                 if (err < 0) {
1199                         kfree(new);
1200                         return err;
1201                 }
1202
1203                 changed |= BSS_CHANGED_FTM_RESPONDER;
1204         }
1205
1206         rcu_assign_pointer(link->u.ap.beacon, new);
1207         sdata->u.ap.active = true;
1208
1209         if (old)
1210                 kfree_rcu(old, rcu_head);
1211
1212         return changed;
1213 }
1214
1215 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
1216                               struct cfg80211_ap_settings *params)
1217 {
1218         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1219         struct ieee80211_local *local = sdata->local;
1220         struct beacon_data *old;
1221         struct ieee80211_sub_if_data *vlan;
1222         u32 changed = BSS_CHANGED_BEACON_INT |
1223                       BSS_CHANGED_BEACON_ENABLED |
1224                       BSS_CHANGED_BEACON |
1225                       BSS_CHANGED_P2P_PS |
1226                       BSS_CHANGED_TXPOWER |
1227                       BSS_CHANGED_TWT;
1228         int i, err;
1229         int prev_beacon_int;
1230         unsigned int link_id = params->beacon.link_id;
1231         struct ieee80211_link_data *link;
1232         struct ieee80211_bss_conf *link_conf;
1233
1234         link = sdata_dereference(sdata->link[link_id], sdata);
1235         if (!link)
1236                 return -ENOLINK;
1237
1238         link_conf = link->conf;
1239
1240         old = sdata_dereference(link->u.ap.beacon, sdata);
1241         if (old)
1242                 return -EALREADY;
1243
1244         if (params->smps_mode != NL80211_SMPS_OFF)
1245                 return -ENOTSUPP;
1246
1247         link->smps_mode = IEEE80211_SMPS_OFF;
1248
1249         link->needed_rx_chains = sdata->local->rx_chains;
1250
1251         prev_beacon_int = link_conf->beacon_int;
1252         link_conf->beacon_int = params->beacon_interval;
1253
1254         if (params->he_cap && params->he_oper) {
1255                 link_conf->he_support = true;
1256                 link_conf->htc_trig_based_pkt_ext =
1257                         le32_get_bits(params->he_oper->he_oper_params,
1258                               IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK);
1259                 link_conf->frame_time_rts_th =
1260                         le32_get_bits(params->he_oper->he_oper_params,
1261                               IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
1262                 changed |= BSS_CHANGED_HE_OBSS_PD;
1263
1264                 if (params->beacon.he_bss_color.enabled)
1265                         changed |= BSS_CHANGED_HE_BSS_COLOR;
1266         }
1267
1268         if (sdata->vif.type == NL80211_IFTYPE_AP &&
1269             params->mbssid_config.tx_wdev) {
1270                 err = ieee80211_set_ap_mbssid_options(sdata,
1271                                                       params->mbssid_config,
1272                                                       link_conf);
1273                 if (err)
1274                         return err;
1275         }
1276
1277         mutex_lock(&local->mtx);
1278         err = ieee80211_link_use_channel(link, &params->chandef,
1279                                          IEEE80211_CHANCTX_SHARED);
1280         if (!err)
1281                 ieee80211_link_copy_chanctx_to_vlans(link, false);
1282         mutex_unlock(&local->mtx);
1283         if (err) {
1284                 link_conf->beacon_int = prev_beacon_int;
1285                 return err;
1286         }
1287
1288         /*
1289          * Apply control port protocol, this allows us to
1290          * not encrypt dynamic WEP control frames.
1291          */
1292         sdata->control_port_protocol = params->crypto.control_port_ethertype;
1293         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
1294         sdata->control_port_over_nl80211 =
1295                                 params->crypto.control_port_over_nl80211;
1296         sdata->control_port_no_preauth =
1297                                 params->crypto.control_port_no_preauth;
1298
1299         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1300                 vlan->control_port_protocol =
1301                         params->crypto.control_port_ethertype;
1302                 vlan->control_port_no_encrypt =
1303                         params->crypto.control_port_no_encrypt;
1304                 vlan->control_port_over_nl80211 =
1305                         params->crypto.control_port_over_nl80211;
1306                 vlan->control_port_no_preauth =
1307                         params->crypto.control_port_no_preauth;
1308         }
1309
1310         link_conf->dtim_period = params->dtim_period;
1311         link_conf->enable_beacon = true;
1312         link_conf->allow_p2p_go_ps = sdata->vif.p2p;
1313         link_conf->twt_responder = params->twt_responder;
1314         link_conf->he_obss_pd = params->he_obss_pd;
1315         link_conf->he_bss_color = params->beacon.he_bss_color;
1316         sdata->vif.cfg.s1g = params->chandef.chan->band ==
1317                                   NL80211_BAND_S1GHZ;
1318
1319         sdata->vif.cfg.ssid_len = params->ssid_len;
1320         if (params->ssid_len)
1321                 memcpy(sdata->vif.cfg.ssid, params->ssid,
1322                        params->ssid_len);
1323         link_conf->hidden_ssid =
1324                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1325
1326         memset(&link_conf->p2p_noa_attr, 0,
1327                sizeof(link_conf->p2p_noa_attr));
1328         link_conf->p2p_noa_attr.oppps_ctwindow =
1329                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1330         if (params->p2p_opp_ps)
1331                 link_conf->p2p_noa_attr.oppps_ctwindow |=
1332                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1333
1334         sdata->beacon_rate_set = false;
1335         if (wiphy_ext_feature_isset(local->hw.wiphy,
1336                                     NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) {
1337                 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1338                         sdata->beacon_rateidx_mask[i] =
1339                                 params->beacon_rate.control[i].legacy;
1340                         if (sdata->beacon_rateidx_mask[i])
1341                                 sdata->beacon_rate_set = true;
1342                 }
1343         }
1344
1345         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL))
1346                 link_conf->beacon_tx_rate = params->beacon_rate;
1347
1348         err = ieee80211_assign_beacon(sdata, link, &params->beacon, NULL, NULL);
1349         if (err < 0)
1350                 goto error;
1351         changed |= err;
1352
1353         if (params->fils_discovery.max_interval) {
1354                 err = ieee80211_set_fils_discovery(sdata,
1355                                                    &params->fils_discovery,
1356                                                    link, link_conf);
1357                 if (err < 0)
1358                         goto error;
1359                 changed |= BSS_CHANGED_FILS_DISCOVERY;
1360         }
1361
1362         if (params->unsol_bcast_probe_resp.interval) {
1363                 err = ieee80211_set_unsol_bcast_probe_resp(sdata,
1364                                                            &params->unsol_bcast_probe_resp,
1365                                                            link, link_conf);
1366                 if (err < 0)
1367                         goto error;
1368                 changed |= BSS_CHANGED_UNSOL_BCAST_PROBE_RESP;
1369         }
1370
1371         err = drv_start_ap(sdata->local, sdata, link_conf);
1372         if (err) {
1373                 old = sdata_dereference(link->u.ap.beacon, sdata);
1374
1375                 if (old)
1376                         kfree_rcu(old, rcu_head);
1377                 RCU_INIT_POINTER(link->u.ap.beacon, NULL);
1378                 sdata->u.ap.active = false;
1379                 goto error;
1380         }
1381
1382         ieee80211_recalc_dtim(local, sdata);
1383         ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_SSID);
1384         ieee80211_link_info_change_notify(sdata, link, changed);
1385
1386         netif_carrier_on(dev);
1387         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1388                 netif_carrier_on(vlan->dev);
1389
1390         return 0;
1391
1392 error:
1393         mutex_lock(&local->mtx);
1394         ieee80211_link_release_channel(link);
1395         mutex_unlock(&local->mtx);
1396
1397         return err;
1398 }
1399
1400 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1401                                    struct cfg80211_beacon_data *params)
1402 {
1403         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1404         struct ieee80211_link_data *link;
1405         struct beacon_data *old;
1406         int err;
1407         struct ieee80211_bss_conf *link_conf;
1408
1409         sdata_assert_lock(sdata);
1410
1411         link = sdata_dereference(sdata->link[params->link_id], sdata);
1412         if (!link)
1413                 return -ENOLINK;
1414
1415         link_conf = link->conf;
1416
1417         /* don't allow changing the beacon while a countdown is in place - offset
1418          * of channel switch counter may change
1419          */
1420         if (link_conf->csa_active || link_conf->color_change_active)
1421                 return -EBUSY;
1422
1423         old = sdata_dereference(link->u.ap.beacon, sdata);
1424         if (!old)
1425                 return -ENOENT;
1426
1427         err = ieee80211_assign_beacon(sdata, link, params, NULL, NULL);
1428         if (err < 0)
1429                 return err;
1430
1431         if (params->he_bss_color_valid &&
1432             params->he_bss_color.enabled != link_conf->he_bss_color.enabled) {
1433                 link_conf->he_bss_color.enabled = params->he_bss_color.enabled;
1434                 err |= BSS_CHANGED_HE_BSS_COLOR;
1435         }
1436
1437         ieee80211_link_info_change_notify(sdata, link, err);
1438         return 0;
1439 }
1440
1441 static void ieee80211_free_next_beacon(struct ieee80211_link_data *link)
1442 {
1443         if (!link->u.ap.next_beacon)
1444                 return;
1445
1446         kfree(link->u.ap.next_beacon->mbssid_ies);
1447         kfree(link->u.ap.next_beacon);
1448         link->u.ap.next_beacon = NULL;
1449 }
1450
1451 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev,
1452                              unsigned int link_id)
1453 {
1454         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1455         struct ieee80211_sub_if_data *vlan;
1456         struct ieee80211_local *local = sdata->local;
1457         struct beacon_data *old_beacon;
1458         struct probe_resp *old_probe_resp;
1459         struct fils_discovery_data *old_fils_discovery;
1460         struct unsol_bcast_probe_resp_data *old_unsol_bcast_probe_resp;
1461         struct cfg80211_chan_def chandef;
1462         struct ieee80211_link_data *link =
1463                 sdata_dereference(sdata->link[link_id], sdata);
1464         struct ieee80211_bss_conf *link_conf = link->conf;
1465
1466         sdata_assert_lock(sdata);
1467
1468         old_beacon = sdata_dereference(link->u.ap.beacon, sdata);
1469         if (!old_beacon)
1470                 return -ENOENT;
1471         old_probe_resp = sdata_dereference(link->u.ap.probe_resp,
1472                                            sdata);
1473         old_fils_discovery = sdata_dereference(link->u.ap.fils_discovery,
1474                                                sdata);
1475         old_unsol_bcast_probe_resp =
1476                 sdata_dereference(link->u.ap.unsol_bcast_probe_resp,
1477                                   sdata);
1478
1479         /* abort any running channel switch */
1480         mutex_lock(&local->mtx);
1481         link_conf->csa_active = false;
1482         if (link->csa_block_tx) {
1483                 ieee80211_wake_vif_queues(local, sdata,
1484                                           IEEE80211_QUEUE_STOP_REASON_CSA);
1485                 link->csa_block_tx = false;
1486         }
1487
1488         mutex_unlock(&local->mtx);
1489
1490         ieee80211_free_next_beacon(link);
1491
1492         /* turn off carrier for this interface and dependent VLANs */
1493         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1494                 netif_carrier_off(vlan->dev);
1495         netif_carrier_off(dev);
1496
1497         /* remove beacon and probe response */
1498         sdata->u.ap.active = false;
1499         RCU_INIT_POINTER(link->u.ap.beacon, NULL);
1500         RCU_INIT_POINTER(link->u.ap.probe_resp, NULL);
1501         RCU_INIT_POINTER(link->u.ap.fils_discovery, NULL);
1502         RCU_INIT_POINTER(link->u.ap.unsol_bcast_probe_resp, NULL);
1503         kfree_rcu(old_beacon, rcu_head);
1504         if (old_probe_resp)
1505                 kfree_rcu(old_probe_resp, rcu_head);
1506         if (old_fils_discovery)
1507                 kfree_rcu(old_fils_discovery, rcu_head);
1508         if (old_unsol_bcast_probe_resp)
1509                 kfree_rcu(old_unsol_bcast_probe_resp, rcu_head);
1510
1511         kfree(link_conf->ftmr_params);
1512         link_conf->ftmr_params = NULL;
1513
1514         __sta_info_flush(sdata, true);
1515         ieee80211_free_keys(sdata, true);
1516
1517         link_conf->enable_beacon = false;
1518         sdata->beacon_rate_set = false;
1519         sdata->vif.cfg.ssid_len = 0;
1520         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1521         ieee80211_link_info_change_notify(sdata, link,
1522                                           BSS_CHANGED_BEACON_ENABLED);
1523
1524         if (sdata->wdev.cac_started) {
1525                 chandef = link_conf->chandef;
1526                 cancel_delayed_work_sync(&link->dfs_cac_timer_work);
1527                 cfg80211_cac_event(sdata->dev, &chandef,
1528                                    NL80211_RADAR_CAC_ABORTED,
1529                                    GFP_KERNEL);
1530         }
1531
1532         drv_stop_ap(sdata->local, sdata, link_conf);
1533
1534         /* free all potentially still buffered bcast frames */
1535         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1536         ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1537
1538         mutex_lock(&local->mtx);
1539         ieee80211_link_copy_chanctx_to_vlans(link, true);
1540         ieee80211_link_release_channel(link);
1541         mutex_unlock(&local->mtx);
1542
1543         return 0;
1544 }
1545
1546 static int sta_apply_auth_flags(struct ieee80211_local *local,
1547                                 struct sta_info *sta,
1548                                 u32 mask, u32 set)
1549 {
1550         int ret;
1551
1552         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1553             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1554             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1555                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1556                 if (ret)
1557                         return ret;
1558         }
1559
1560         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1561             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1562             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1563                 /*
1564                  * When peer becomes associated, init rate control as
1565                  * well. Some drivers require rate control initialized
1566                  * before drv_sta_state() is called.
1567                  */
1568                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1569                         rate_control_rate_init(sta);
1570
1571                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1572                 if (ret)
1573                         return ret;
1574         }
1575
1576         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1577                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1578                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1579                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1580                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1581                 else
1582                         ret = 0;
1583                 if (ret)
1584                         return ret;
1585         }
1586
1587         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1588             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1589             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1590                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1591                 if (ret)
1592                         return ret;
1593         }
1594
1595         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1596             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1597             test_sta_flag(sta, WLAN_STA_AUTH)) {
1598                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1599                 if (ret)
1600                         return ret;
1601         }
1602
1603         return 0;
1604 }
1605
1606 static void sta_apply_mesh_params(struct ieee80211_local *local,
1607                                   struct sta_info *sta,
1608                                   struct station_parameters *params)
1609 {
1610 #ifdef CONFIG_MAC80211_MESH
1611         struct ieee80211_sub_if_data *sdata = sta->sdata;
1612         u32 changed = 0;
1613
1614         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1615                 switch (params->plink_state) {
1616                 case NL80211_PLINK_ESTAB:
1617                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1618                                 changed = mesh_plink_inc_estab_count(sdata);
1619                         sta->mesh->plink_state = params->plink_state;
1620                         sta->mesh->aid = params->peer_aid;
1621
1622                         ieee80211_mps_sta_status_update(sta);
1623                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1624                                       sdata->u.mesh.mshcfg.power_mode);
1625
1626                         ewma_mesh_tx_rate_avg_init(&sta->mesh->tx_rate_avg);
1627                         /* init at low value */
1628                         ewma_mesh_tx_rate_avg_add(&sta->mesh->tx_rate_avg, 10);
1629
1630                         break;
1631                 case NL80211_PLINK_LISTEN:
1632                 case NL80211_PLINK_BLOCKED:
1633                 case NL80211_PLINK_OPN_SNT:
1634                 case NL80211_PLINK_OPN_RCVD:
1635                 case NL80211_PLINK_CNF_RCVD:
1636                 case NL80211_PLINK_HOLDING:
1637                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1638                                 changed = mesh_plink_dec_estab_count(sdata);
1639                         sta->mesh->plink_state = params->plink_state;
1640
1641                         ieee80211_mps_sta_status_update(sta);
1642                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1643                                         NL80211_MESH_POWER_UNKNOWN);
1644                         break;
1645                 default:
1646                         /*  nothing  */
1647                         break;
1648                 }
1649         }
1650
1651         switch (params->plink_action) {
1652         case NL80211_PLINK_ACTION_NO_ACTION:
1653                 /* nothing */
1654                 break;
1655         case NL80211_PLINK_ACTION_OPEN:
1656                 changed |= mesh_plink_open(sta);
1657                 break;
1658         case NL80211_PLINK_ACTION_BLOCK:
1659                 changed |= mesh_plink_block(sta);
1660                 break;
1661         }
1662
1663         if (params->local_pm)
1664                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1665                                                           params->local_pm);
1666
1667         ieee80211_mbss_info_change_notify(sdata, changed);
1668 #endif
1669 }
1670
1671 static int sta_link_apply_parameters(struct ieee80211_local *local,
1672                                      struct sta_info *sta, bool new_link,
1673                                      struct link_station_parameters *params)
1674 {
1675         int ret = 0;
1676         struct ieee80211_supported_band *sband;
1677         struct ieee80211_sub_if_data *sdata = sta->sdata;
1678         u32 link_id = params->link_id < 0 ? 0 : params->link_id;
1679         struct ieee80211_link_data *link =
1680                 sdata_dereference(sdata->link[link_id], sdata);
1681         struct link_sta_info *link_sta =
1682                 rcu_dereference_protected(sta->link[link_id],
1683                                           lockdep_is_held(&local->sta_mtx));
1684
1685         /*
1686          * If there are no changes, then accept a link that doesn't exist,
1687          * unless it's a new link.
1688          */
1689         if (params->link_id < 0 && !new_link &&
1690             !params->link_mac && !params->txpwr_set &&
1691             !params->supported_rates_len &&
1692             !params->ht_capa && !params->vht_capa &&
1693             !params->he_capa && !params->eht_capa &&
1694             !params->opmode_notif_used)
1695                 return 0;
1696
1697         if (!link || !link_sta)
1698                 return -EINVAL;
1699
1700         sband = ieee80211_get_link_sband(link);
1701         if (!sband)
1702                 return -EINVAL;
1703
1704         if (params->link_mac) {
1705                 if (new_link) {
1706                         memcpy(link_sta->addr, params->link_mac, ETH_ALEN);
1707                         memcpy(link_sta->pub->addr, params->link_mac, ETH_ALEN);
1708                 } else if (!ether_addr_equal(link_sta->addr,
1709                                              params->link_mac)) {
1710                         return -EINVAL;
1711                 }
1712         } else if (new_link) {
1713                 return -EINVAL;
1714         }
1715
1716         if (params->txpwr_set) {
1717                 link_sta->pub->txpwr.type = params->txpwr.type;
1718                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED)
1719                         link_sta->pub->txpwr.power = params->txpwr.power;
1720                 ret = drv_sta_set_txpwr(local, sdata, sta);
1721                 if (ret)
1722                         return ret;
1723         }
1724
1725         if (params->supported_rates &&
1726             params->supported_rates_len) {
1727                 ieee80211_parse_bitrates(link->conf->chandef.width,
1728                                          sband, params->supported_rates,
1729                                          params->supported_rates_len,
1730                                          &link_sta->pub->supp_rates[sband->band]);
1731         }
1732
1733         if (params->ht_capa)
1734                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1735                                                   params->ht_capa, link_sta);
1736
1737         /* VHT can override some HT caps such as the A-MSDU max length */
1738         if (params->vht_capa)
1739                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1740                                                     params->vht_capa, link_sta);
1741
1742         if (params->he_capa)
1743                 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
1744                                                   (void *)params->he_capa,
1745                                                   params->he_capa_len,
1746                                                   (void *)params->he_6ghz_capa,
1747                                                   link_sta);
1748
1749         if (params->eht_capa)
1750                 ieee80211_eht_cap_ie_to_sta_eht_cap(sdata, sband,
1751                                                     (u8 *)params->he_capa,
1752                                                     params->he_capa_len,
1753                                                     params->eht_capa,
1754                                                     params->eht_capa_len,
1755                                                     link_sta);
1756
1757         if (params->opmode_notif_used) {
1758                 /* returned value is only needed for rc update, but the
1759                  * rc isn't initialized here yet, so ignore it
1760                  */
1761                 __ieee80211_vht_handle_opmode(sdata, link_sta,
1762                                               params->opmode_notif,
1763                                               sband->band);
1764         }
1765
1766         return ret;
1767 }
1768
1769 static int sta_apply_parameters(struct ieee80211_local *local,
1770                                 struct sta_info *sta,
1771                                 struct station_parameters *params)
1772 {
1773         struct ieee80211_sub_if_data *sdata = sta->sdata;
1774         u32 mask, set;
1775         int ret = 0;
1776
1777         mask = params->sta_flags_mask;
1778         set = params->sta_flags_set;
1779
1780         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1781                 /*
1782                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1783                  * API but must follow AUTHENTICATED for driver state.
1784                  */
1785                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1786                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1787                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1788                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1789         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1790                 /*
1791                  * TDLS -- everything follows authorized, but
1792                  * only becoming authorized is possible, not
1793                  * going back
1794                  */
1795                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1796                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1797                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1798                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1799                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1800                 }
1801         }
1802
1803         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1804             local->hw.queues >= IEEE80211_NUM_ACS)
1805                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1806
1807         /* auth flags will be set later for TDLS,
1808          * and for unassociated stations that move to associated */
1809         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1810             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1811               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1812                 ret = sta_apply_auth_flags(local, sta, mask, set);
1813                 if (ret)
1814                         return ret;
1815         }
1816
1817         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1818                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1819                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1820                 else
1821                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1822         }
1823
1824         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1825                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1826                 if (set & BIT(NL80211_STA_FLAG_MFP))
1827                         set_sta_flag(sta, WLAN_STA_MFP);
1828                 else
1829                         clear_sta_flag(sta, WLAN_STA_MFP);
1830         }
1831
1832         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1833                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1834                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1835                 else
1836                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1837         }
1838
1839         /* mark TDLS channel switch support, if the AP allows it */
1840         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1841             !sdata->deflink.u.mgd.tdls_chan_switch_prohibited &&
1842             params->ext_capab_len >= 4 &&
1843             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1844                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1845
1846         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1847             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1848             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1849             params->ext_capab_len >= 8 &&
1850             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1851                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1852
1853         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1854                 sta->sta.uapsd_queues = params->uapsd_queues;
1855                 sta->sta.max_sp = params->max_sp;
1856         }
1857
1858         ieee80211_sta_set_max_amsdu_subframes(sta, params->ext_capab,
1859                                               params->ext_capab_len);
1860
1861         /*
1862          * cfg80211 validates this (1-2007) and allows setting the AID
1863          * only when creating a new station entry
1864          */
1865         if (params->aid)
1866                 sta->sta.aid = params->aid;
1867
1868         /*
1869          * Some of the following updates would be racy if called on an
1870          * existing station, via ieee80211_change_station(). However,
1871          * all such changes are rejected by cfg80211 except for updates
1872          * changing the supported rates on an existing but not yet used
1873          * TDLS peer.
1874          */
1875
1876         if (params->listen_interval >= 0)
1877                 sta->listen_interval = params->listen_interval;
1878
1879         ret = sta_link_apply_parameters(local, sta, false,
1880                                         &params->link_sta_params);
1881         if (ret)
1882                 return ret;
1883
1884         if (params->support_p2p_ps >= 0)
1885                 sta->sta.support_p2p_ps = params->support_p2p_ps;
1886
1887         if (ieee80211_vif_is_mesh(&sdata->vif))
1888                 sta_apply_mesh_params(local, sta, params);
1889
1890         if (params->airtime_weight)
1891                 sta->airtime_weight = params->airtime_weight;
1892
1893         /* set the STA state after all sta info from usermode has been set */
1894         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1895             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1896                 ret = sta_apply_auth_flags(local, sta, mask, set);
1897                 if (ret)
1898                         return ret;
1899         }
1900
1901         /* Mark the STA as MLO if MLD MAC address is available */
1902         if (params->link_sta_params.mld_mac)
1903                 sta->sta.mlo = true;
1904
1905         return 0;
1906 }
1907
1908 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1909                                  const u8 *mac,
1910                                  struct station_parameters *params)
1911 {
1912         struct ieee80211_local *local = wiphy_priv(wiphy);
1913         struct sta_info *sta;
1914         struct ieee80211_sub_if_data *sdata;
1915         int err;
1916
1917         if (params->vlan) {
1918                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1919
1920                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1921                     sdata->vif.type != NL80211_IFTYPE_AP)
1922                         return -EINVAL;
1923         } else
1924                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1925
1926         if (ether_addr_equal(mac, sdata->vif.addr))
1927                 return -EINVAL;
1928
1929         if (!is_valid_ether_addr(mac))
1930                 return -EINVAL;
1931
1932         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
1933             sdata->vif.type == NL80211_IFTYPE_STATION &&
1934             !sdata->u.mgd.associated)
1935                 return -EINVAL;
1936
1937         /*
1938          * If we have a link ID, it can be a non-MLO station on an AP MLD,
1939          * but we need to have a link_mac in that case as well, so use the
1940          * STA's MAC address in that case.
1941          */
1942         if (params->link_sta_params.link_id >= 0)
1943                 sta = sta_info_alloc_with_link(sdata, mac,
1944                                                params->link_sta_params.link_id,
1945                                                params->link_sta_params.link_mac ?: mac,
1946                                                GFP_KERNEL);
1947         else
1948                 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1949
1950         if (!sta)
1951                 return -ENOMEM;
1952
1953         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1954                 sta->sta.tdls = true;
1955
1956         /* Though the mutex is not needed here (since the station is not
1957          * visible yet), sta_apply_parameters (and inner functions) require
1958          * the mutex due to other paths.
1959          */
1960         mutex_lock(&local->sta_mtx);
1961         err = sta_apply_parameters(local, sta, params);
1962         mutex_unlock(&local->sta_mtx);
1963         if (err) {
1964                 sta_info_free(local, sta);
1965                 return err;
1966         }
1967
1968         /*
1969          * for TDLS and for unassociated station, rate control should be
1970          * initialized only when rates are known and station is marked
1971          * authorized/associated
1972          */
1973         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1974             test_sta_flag(sta, WLAN_STA_ASSOC))
1975                 rate_control_rate_init(sta);
1976
1977         return sta_info_insert(sta);
1978 }
1979
1980 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1981                                  struct station_del_parameters *params)
1982 {
1983         struct ieee80211_sub_if_data *sdata;
1984
1985         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1986
1987         if (params->mac)
1988                 return sta_info_destroy_addr_bss(sdata, params->mac);
1989
1990         sta_info_flush(sdata);
1991         return 0;
1992 }
1993
1994 static int ieee80211_change_station(struct wiphy *wiphy,
1995                                     struct net_device *dev, const u8 *mac,
1996                                     struct station_parameters *params)
1997 {
1998         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1999         struct ieee80211_local *local = wiphy_priv(wiphy);
2000         struct sta_info *sta;
2001         struct ieee80211_sub_if_data *vlansdata;
2002         enum cfg80211_station_type statype;
2003         int err;
2004
2005         mutex_lock(&local->sta_mtx);
2006
2007         sta = sta_info_get_bss(sdata, mac);
2008         if (!sta) {
2009                 err = -ENOENT;
2010                 goto out_err;
2011         }
2012
2013         switch (sdata->vif.type) {
2014         case NL80211_IFTYPE_MESH_POINT:
2015                 if (sdata->u.mesh.user_mpm)
2016                         statype = CFG80211_STA_MESH_PEER_USER;
2017                 else
2018                         statype = CFG80211_STA_MESH_PEER_KERNEL;
2019                 break;
2020         case NL80211_IFTYPE_ADHOC:
2021                 statype = CFG80211_STA_IBSS;
2022                 break;
2023         case NL80211_IFTYPE_STATION:
2024                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
2025                         statype = CFG80211_STA_AP_STA;
2026                         break;
2027                 }
2028                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2029                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
2030                 else
2031                         statype = CFG80211_STA_TDLS_PEER_SETUP;
2032                 break;
2033         case NL80211_IFTYPE_AP:
2034         case NL80211_IFTYPE_AP_VLAN:
2035                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
2036                         statype = CFG80211_STA_AP_CLIENT;
2037                 else
2038                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
2039                 break;
2040         default:
2041                 err = -EOPNOTSUPP;
2042                 goto out_err;
2043         }
2044
2045         err = cfg80211_check_station_change(wiphy, params, statype);
2046         if (err)
2047                 goto out_err;
2048
2049         if (params->vlan && params->vlan != sta->sdata->dev) {
2050                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
2051
2052                 if (params->vlan->ieee80211_ptr->use_4addr) {
2053                         if (vlansdata->u.vlan.sta) {
2054                                 err = -EBUSY;
2055                                 goto out_err;
2056                         }
2057
2058                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
2059                         __ieee80211_check_fast_rx_iface(vlansdata);
2060                         drv_sta_set_4addr(local, sta->sdata, &sta->sta, true);
2061                 }
2062
2063                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
2064                     sta->sdata->u.vlan.sta) {
2065                         ieee80211_clear_fast_rx(sta);
2066                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
2067                 }
2068
2069                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2070                         ieee80211_vif_dec_num_mcast(sta->sdata);
2071
2072                 sta->sdata = vlansdata;
2073                 ieee80211_check_fast_xmit(sta);
2074
2075                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) {
2076                         ieee80211_vif_inc_num_mcast(sta->sdata);
2077                         cfg80211_send_layer2_update(sta->sdata->dev,
2078                                                     sta->sta.addr);
2079                 }
2080         }
2081
2082         /* we use sta_info_get_bss() so this might be different */
2083         if (sdata != sta->sdata) {
2084                 mutex_lock_nested(&sta->sdata->wdev.mtx, 1);
2085                 err = sta_apply_parameters(local, sta, params);
2086                 mutex_unlock(&sta->sdata->wdev.mtx);
2087         } else {
2088                 err = sta_apply_parameters(local, sta, params);
2089         }
2090         if (err)
2091                 goto out_err;
2092
2093         mutex_unlock(&local->sta_mtx);
2094
2095         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
2096             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
2097                 ieee80211_recalc_ps(local);
2098                 ieee80211_recalc_ps_vif(sdata);
2099         }
2100
2101         return 0;
2102 out_err:
2103         mutex_unlock(&local->sta_mtx);
2104         return err;
2105 }
2106
2107 #ifdef CONFIG_MAC80211_MESH
2108 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
2109                                const u8 *dst, const u8 *next_hop)
2110 {
2111         struct ieee80211_sub_if_data *sdata;
2112         struct mesh_path *mpath;
2113         struct sta_info *sta;
2114
2115         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2116
2117         rcu_read_lock();
2118         sta = sta_info_get(sdata, next_hop);
2119         if (!sta) {
2120                 rcu_read_unlock();
2121                 return -ENOENT;
2122         }
2123
2124         mpath = mesh_path_add(sdata, dst);
2125         if (IS_ERR(mpath)) {
2126                 rcu_read_unlock();
2127                 return PTR_ERR(mpath);
2128         }
2129
2130         mesh_path_fix_nexthop(mpath, sta);
2131
2132         rcu_read_unlock();
2133         return 0;
2134 }
2135
2136 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
2137                                const u8 *dst)
2138 {
2139         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2140
2141         if (dst)
2142                 return mesh_path_del(sdata, dst);
2143
2144         mesh_path_flush_by_iface(sdata);
2145         return 0;
2146 }
2147
2148 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
2149                                   const u8 *dst, const u8 *next_hop)
2150 {
2151         struct ieee80211_sub_if_data *sdata;
2152         struct mesh_path *mpath;
2153         struct sta_info *sta;
2154
2155         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2156
2157         rcu_read_lock();
2158
2159         sta = sta_info_get(sdata, next_hop);
2160         if (!sta) {
2161                 rcu_read_unlock();
2162                 return -ENOENT;
2163         }
2164
2165         mpath = mesh_path_lookup(sdata, dst);
2166         if (!mpath) {
2167                 rcu_read_unlock();
2168                 return -ENOENT;
2169         }
2170
2171         mesh_path_fix_nexthop(mpath, sta);
2172
2173         rcu_read_unlock();
2174         return 0;
2175 }
2176
2177 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
2178                             struct mpath_info *pinfo)
2179 {
2180         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
2181
2182         if (next_hop_sta)
2183                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
2184         else
2185                 eth_zero_addr(next_hop);
2186
2187         memset(pinfo, 0, sizeof(*pinfo));
2188
2189         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
2190
2191         pinfo->filled = MPATH_INFO_FRAME_QLEN |
2192                         MPATH_INFO_SN |
2193                         MPATH_INFO_METRIC |
2194                         MPATH_INFO_EXPTIME |
2195                         MPATH_INFO_DISCOVERY_TIMEOUT |
2196                         MPATH_INFO_DISCOVERY_RETRIES |
2197                         MPATH_INFO_FLAGS |
2198                         MPATH_INFO_HOP_COUNT |
2199                         MPATH_INFO_PATH_CHANGE;
2200
2201         pinfo->frame_qlen = mpath->frame_queue.qlen;
2202         pinfo->sn = mpath->sn;
2203         pinfo->metric = mpath->metric;
2204         if (time_before(jiffies, mpath->exp_time))
2205                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
2206         pinfo->discovery_timeout =
2207                         jiffies_to_msecs(mpath->discovery_timeout);
2208         pinfo->discovery_retries = mpath->discovery_retries;
2209         if (mpath->flags & MESH_PATH_ACTIVE)
2210                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
2211         if (mpath->flags & MESH_PATH_RESOLVING)
2212                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
2213         if (mpath->flags & MESH_PATH_SN_VALID)
2214                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
2215         if (mpath->flags & MESH_PATH_FIXED)
2216                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
2217         if (mpath->flags & MESH_PATH_RESOLVED)
2218                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
2219         pinfo->hop_count = mpath->hop_count;
2220         pinfo->path_change_count = mpath->path_change_count;
2221 }
2222
2223 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
2224                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
2225
2226 {
2227         struct ieee80211_sub_if_data *sdata;
2228         struct mesh_path *mpath;
2229
2230         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2231
2232         rcu_read_lock();
2233         mpath = mesh_path_lookup(sdata, dst);
2234         if (!mpath) {
2235                 rcu_read_unlock();
2236                 return -ENOENT;
2237         }
2238         memcpy(dst, mpath->dst, ETH_ALEN);
2239         mpath_set_pinfo(mpath, next_hop, pinfo);
2240         rcu_read_unlock();
2241         return 0;
2242 }
2243
2244 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
2245                                 int idx, u8 *dst, u8 *next_hop,
2246                                 struct mpath_info *pinfo)
2247 {
2248         struct ieee80211_sub_if_data *sdata;
2249         struct mesh_path *mpath;
2250
2251         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2252
2253         rcu_read_lock();
2254         mpath = mesh_path_lookup_by_idx(sdata, idx);
2255         if (!mpath) {
2256                 rcu_read_unlock();
2257                 return -ENOENT;
2258         }
2259         memcpy(dst, mpath->dst, ETH_ALEN);
2260         mpath_set_pinfo(mpath, next_hop, pinfo);
2261         rcu_read_unlock();
2262         return 0;
2263 }
2264
2265 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
2266                           struct mpath_info *pinfo)
2267 {
2268         memset(pinfo, 0, sizeof(*pinfo));
2269         memcpy(mpp, mpath->mpp, ETH_ALEN);
2270
2271         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
2272 }
2273
2274 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
2275                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
2276
2277 {
2278         struct ieee80211_sub_if_data *sdata;
2279         struct mesh_path *mpath;
2280
2281         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2282
2283         rcu_read_lock();
2284         mpath = mpp_path_lookup(sdata, dst);
2285         if (!mpath) {
2286                 rcu_read_unlock();
2287                 return -ENOENT;
2288         }
2289         memcpy(dst, mpath->dst, ETH_ALEN);
2290         mpp_set_pinfo(mpath, mpp, pinfo);
2291         rcu_read_unlock();
2292         return 0;
2293 }
2294
2295 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
2296                               int idx, u8 *dst, u8 *mpp,
2297                               struct mpath_info *pinfo)
2298 {
2299         struct ieee80211_sub_if_data *sdata;
2300         struct mesh_path *mpath;
2301
2302         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2303
2304         rcu_read_lock();
2305         mpath = mpp_path_lookup_by_idx(sdata, idx);
2306         if (!mpath) {
2307                 rcu_read_unlock();
2308                 return -ENOENT;
2309         }
2310         memcpy(dst, mpath->dst, ETH_ALEN);
2311         mpp_set_pinfo(mpath, mpp, pinfo);
2312         rcu_read_unlock();
2313         return 0;
2314 }
2315
2316 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
2317                                 struct net_device *dev,
2318                                 struct mesh_config *conf)
2319 {
2320         struct ieee80211_sub_if_data *sdata;
2321         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2322
2323         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
2324         return 0;
2325 }
2326
2327 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
2328 {
2329         return (mask >> (parm-1)) & 0x1;
2330 }
2331
2332 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
2333                 const struct mesh_setup *setup)
2334 {
2335         u8 *new_ie;
2336         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
2337                                         struct ieee80211_sub_if_data, u.mesh);
2338         int i;
2339
2340         /* allocate information elements */
2341         new_ie = NULL;
2342
2343         if (setup->ie_len) {
2344                 new_ie = kmemdup(setup->ie, setup->ie_len,
2345                                 GFP_KERNEL);
2346                 if (!new_ie)
2347                         return -ENOMEM;
2348         }
2349         ifmsh->ie_len = setup->ie_len;
2350         ifmsh->ie = new_ie;
2351
2352         /* now copy the rest of the setup parameters */
2353         ifmsh->mesh_id_len = setup->mesh_id_len;
2354         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
2355         ifmsh->mesh_sp_id = setup->sync_method;
2356         ifmsh->mesh_pp_id = setup->path_sel_proto;
2357         ifmsh->mesh_pm_id = setup->path_metric;
2358         ifmsh->user_mpm = setup->user_mpm;
2359         ifmsh->mesh_auth_id = setup->auth_id;
2360         ifmsh->security = IEEE80211_MESH_SEC_NONE;
2361         ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs;
2362         if (setup->is_authenticated)
2363                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
2364         if (setup->is_secure)
2365                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
2366
2367         /* mcast rate setting in Mesh Node */
2368         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
2369                                                 sizeof(setup->mcast_rate));
2370         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
2371
2372         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
2373         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
2374
2375         sdata->beacon_rate_set = false;
2376         if (wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2377                                     NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) {
2378                 for (i = 0; i < NUM_NL80211_BANDS; i++) {
2379                         sdata->beacon_rateidx_mask[i] =
2380                                 setup->beacon_rate.control[i].legacy;
2381                         if (sdata->beacon_rateidx_mask[i])
2382                                 sdata->beacon_rate_set = true;
2383                 }
2384         }
2385
2386         return 0;
2387 }
2388
2389 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
2390                                         struct net_device *dev, u32 mask,
2391                                         const struct mesh_config *nconf)
2392 {
2393         struct mesh_config *conf;
2394         struct ieee80211_sub_if_data *sdata;
2395         struct ieee80211_if_mesh *ifmsh;
2396
2397         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2398         ifmsh = &sdata->u.mesh;
2399
2400         /* Set the config options which we are interested in setting */
2401         conf = &(sdata->u.mesh.mshcfg);
2402         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
2403                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
2404         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
2405                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
2406         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
2407                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
2408         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
2409                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
2410         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
2411                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
2412         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
2413                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
2414         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
2415                 conf->element_ttl = nconf->element_ttl;
2416         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
2417                 if (ifmsh->user_mpm)
2418                         return -EBUSY;
2419                 conf->auto_open_plinks = nconf->auto_open_plinks;
2420         }
2421         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
2422                 conf->dot11MeshNbrOffsetMaxNeighbor =
2423                         nconf->dot11MeshNbrOffsetMaxNeighbor;
2424         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
2425                 conf->dot11MeshHWMPmaxPREQretries =
2426                         nconf->dot11MeshHWMPmaxPREQretries;
2427         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
2428                 conf->path_refresh_time = nconf->path_refresh_time;
2429         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
2430                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
2431         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
2432                 conf->dot11MeshHWMPactivePathTimeout =
2433                         nconf->dot11MeshHWMPactivePathTimeout;
2434         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
2435                 conf->dot11MeshHWMPpreqMinInterval =
2436                         nconf->dot11MeshHWMPpreqMinInterval;
2437         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
2438                 conf->dot11MeshHWMPperrMinInterval =
2439                         nconf->dot11MeshHWMPperrMinInterval;
2440         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2441                            mask))
2442                 conf->dot11MeshHWMPnetDiameterTraversalTime =
2443                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
2444         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
2445                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
2446                 ieee80211_mesh_root_setup(ifmsh);
2447         }
2448         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
2449                 /* our current gate announcement implementation rides on root
2450                  * announcements, so require this ifmsh to also be a root node
2451                  * */
2452                 if (nconf->dot11MeshGateAnnouncementProtocol &&
2453                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
2454                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
2455                         ieee80211_mesh_root_setup(ifmsh);
2456                 }
2457                 conf->dot11MeshGateAnnouncementProtocol =
2458                         nconf->dot11MeshGateAnnouncementProtocol;
2459         }
2460         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
2461                 conf->dot11MeshHWMPRannInterval =
2462                         nconf->dot11MeshHWMPRannInterval;
2463         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
2464                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
2465         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
2466                 /* our RSSI threshold implementation is supported only for
2467                  * devices that report signal in dBm.
2468                  */
2469                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
2470                         return -ENOTSUPP;
2471                 conf->rssi_threshold = nconf->rssi_threshold;
2472         }
2473         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
2474                 conf->ht_opmode = nconf->ht_opmode;
2475                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
2476                 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
2477                                                   BSS_CHANGED_HT);
2478         }
2479         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
2480                 conf->dot11MeshHWMPactivePathToRootTimeout =
2481                         nconf->dot11MeshHWMPactivePathToRootTimeout;
2482         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
2483                 conf->dot11MeshHWMProotInterval =
2484                         nconf->dot11MeshHWMProotInterval;
2485         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
2486                 conf->dot11MeshHWMPconfirmationInterval =
2487                         nconf->dot11MeshHWMPconfirmationInterval;
2488         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
2489                 conf->power_mode = nconf->power_mode;
2490                 ieee80211_mps_local_status_update(sdata);
2491         }
2492         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
2493                 conf->dot11MeshAwakeWindowDuration =
2494                         nconf->dot11MeshAwakeWindowDuration;
2495         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2496                 conf->plink_timeout = nconf->plink_timeout;
2497         if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_GATE, mask))
2498                 conf->dot11MeshConnectedToMeshGate =
2499                         nconf->dot11MeshConnectedToMeshGate;
2500         if (_chg_mesh_attr(NL80211_MESHCONF_NOLEARN, mask))
2501                 conf->dot11MeshNolearn = nconf->dot11MeshNolearn;
2502         if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_AS, mask))
2503                 conf->dot11MeshConnectedToAuthServer =
2504                         nconf->dot11MeshConnectedToAuthServer;
2505         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2506         return 0;
2507 }
2508
2509 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2510                                const struct mesh_config *conf,
2511                                const struct mesh_setup *setup)
2512 {
2513         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2514         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2515         int err;
2516
2517         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2518         err = copy_mesh_setup(ifmsh, setup);
2519         if (err)
2520                 return err;
2521
2522         sdata->control_port_over_nl80211 = setup->control_port_over_nl80211;
2523
2524         /* can mesh use other SMPS modes? */
2525         sdata->deflink.smps_mode = IEEE80211_SMPS_OFF;
2526         sdata->deflink.needed_rx_chains = sdata->local->rx_chains;
2527
2528         mutex_lock(&sdata->local->mtx);
2529         err = ieee80211_link_use_channel(&sdata->deflink, &setup->chandef,
2530                                          IEEE80211_CHANCTX_SHARED);
2531         mutex_unlock(&sdata->local->mtx);
2532         if (err)
2533                 return err;
2534
2535         return ieee80211_start_mesh(sdata);
2536 }
2537
2538 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2539 {
2540         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2541
2542         ieee80211_stop_mesh(sdata);
2543         mutex_lock(&sdata->local->mtx);
2544         ieee80211_link_release_channel(&sdata->deflink);
2545         kfree(sdata->u.mesh.ie);
2546         mutex_unlock(&sdata->local->mtx);
2547
2548         return 0;
2549 }
2550 #endif
2551
2552 static int ieee80211_change_bss(struct wiphy *wiphy,
2553                                 struct net_device *dev,
2554                                 struct bss_parameters *params)
2555 {
2556         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2557         struct ieee80211_link_data *link;
2558         struct ieee80211_supported_band *sband;
2559         u32 changed = 0;
2560
2561         link = ieee80211_link_or_deflink(sdata, params->link_id, true);
2562         if (IS_ERR(link))
2563                 return PTR_ERR(link);
2564
2565         if (!sdata_dereference(link->u.ap.beacon, sdata))
2566                 return -ENOENT;
2567
2568         sband = ieee80211_get_link_sband(link);
2569         if (!sband)
2570                 return -EINVAL;
2571
2572         if (params->use_cts_prot >= 0) {
2573                 link->conf->use_cts_prot = params->use_cts_prot;
2574                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2575         }
2576         if (params->use_short_preamble >= 0) {
2577                 link->conf->use_short_preamble = params->use_short_preamble;
2578                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2579         }
2580
2581         if (!link->conf->use_short_slot &&
2582             (sband->band == NL80211_BAND_5GHZ ||
2583              sband->band == NL80211_BAND_6GHZ)) {
2584                 link->conf->use_short_slot = true;
2585                 changed |= BSS_CHANGED_ERP_SLOT;
2586         }
2587
2588         if (params->use_short_slot_time >= 0) {
2589                 link->conf->use_short_slot = params->use_short_slot_time;
2590                 changed |= BSS_CHANGED_ERP_SLOT;
2591         }
2592
2593         if (params->basic_rates) {
2594                 ieee80211_parse_bitrates(link->conf->chandef.width,
2595                                          wiphy->bands[sband->band],
2596                                          params->basic_rates,
2597                                          params->basic_rates_len,
2598                                          &link->conf->basic_rates);
2599                 changed |= BSS_CHANGED_BASIC_RATES;
2600                 ieee80211_check_rate_mask(link);
2601         }
2602
2603         if (params->ap_isolate >= 0) {
2604                 if (params->ap_isolate)
2605                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2606                 else
2607                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2608                 ieee80211_check_fast_rx_iface(sdata);
2609         }
2610
2611         if (params->ht_opmode >= 0) {
2612                 link->conf->ht_operation_mode = (u16)params->ht_opmode;
2613                 changed |= BSS_CHANGED_HT;
2614         }
2615
2616         if (params->p2p_ctwindow >= 0) {
2617                 link->conf->p2p_noa_attr.oppps_ctwindow &=
2618                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2619                 link->conf->p2p_noa_attr.oppps_ctwindow |=
2620                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2621                 changed |= BSS_CHANGED_P2P_PS;
2622         }
2623
2624         if (params->p2p_opp_ps > 0) {
2625                 link->conf->p2p_noa_attr.oppps_ctwindow |=
2626                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2627                 changed |= BSS_CHANGED_P2P_PS;
2628         } else if (params->p2p_opp_ps == 0) {
2629                 link->conf->p2p_noa_attr.oppps_ctwindow &=
2630                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2631                 changed |= BSS_CHANGED_P2P_PS;
2632         }
2633
2634         ieee80211_link_info_change_notify(sdata, link, changed);
2635
2636         return 0;
2637 }
2638
2639 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2640                                     struct net_device *dev,
2641                                     struct ieee80211_txq_params *params)
2642 {
2643         struct ieee80211_local *local = wiphy_priv(wiphy);
2644         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2645         struct ieee80211_link_data *link =
2646                 ieee80211_link_or_deflink(sdata, params->link_id, true);
2647         struct ieee80211_tx_queue_params p;
2648
2649         if (!local->ops->conf_tx)
2650                 return -EOPNOTSUPP;
2651
2652         if (local->hw.queues < IEEE80211_NUM_ACS)
2653                 return -EOPNOTSUPP;
2654
2655         if (IS_ERR(link))
2656                 return PTR_ERR(link);
2657
2658         memset(&p, 0, sizeof(p));
2659         p.aifs = params->aifs;
2660         p.cw_max = params->cwmax;
2661         p.cw_min = params->cwmin;
2662         p.txop = params->txop;
2663
2664         /*
2665          * Setting tx queue params disables u-apsd because it's only
2666          * called in master mode.
2667          */
2668         p.uapsd = false;
2669
2670         ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac);
2671
2672         link->tx_conf[params->ac] = p;
2673         if (drv_conf_tx(local, link, params->ac, &p)) {
2674                 wiphy_debug(local->hw.wiphy,
2675                             "failed to set TX queue parameters for AC %d\n",
2676                             params->ac);
2677                 return -EINVAL;
2678         }
2679
2680         ieee80211_link_info_change_notify(sdata, link,
2681                                           BSS_CHANGED_QOS);
2682
2683         return 0;
2684 }
2685
2686 #ifdef CONFIG_PM
2687 static int ieee80211_suspend(struct wiphy *wiphy,
2688                              struct cfg80211_wowlan *wowlan)
2689 {
2690         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2691 }
2692
2693 static int ieee80211_resume(struct wiphy *wiphy)
2694 {
2695         return __ieee80211_resume(wiphy_priv(wiphy));
2696 }
2697 #else
2698 #define ieee80211_suspend NULL
2699 #define ieee80211_resume NULL
2700 #endif
2701
2702 static int ieee80211_scan(struct wiphy *wiphy,
2703                           struct cfg80211_scan_request *req)
2704 {
2705         struct ieee80211_sub_if_data *sdata;
2706
2707         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2708
2709         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2710         case NL80211_IFTYPE_STATION:
2711         case NL80211_IFTYPE_ADHOC:
2712         case NL80211_IFTYPE_MESH_POINT:
2713         case NL80211_IFTYPE_P2P_CLIENT:
2714         case NL80211_IFTYPE_P2P_DEVICE:
2715                 break;
2716         case NL80211_IFTYPE_P2P_GO:
2717                 if (sdata->local->ops->hw_scan)
2718                         break;
2719                 /*
2720                  * FIXME: implement NoA while scanning in software,
2721                  * for now fall through to allow scanning only when
2722                  * beaconing hasn't been configured yet
2723                  */
2724                 fallthrough;
2725         case NL80211_IFTYPE_AP:
2726                 /*
2727                  * If the scan has been forced (and the driver supports
2728                  * forcing), don't care about being beaconing already.
2729                  * This will create problems to the attached stations (e.g. all
2730                  * the  frames sent while scanning on other channel will be
2731                  * lost)
2732                  */
2733                 if (sdata->deflink.u.ap.beacon &&
2734                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2735                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2736                         return -EOPNOTSUPP;
2737                 break;
2738         case NL80211_IFTYPE_NAN:
2739         default:
2740                 return -EOPNOTSUPP;
2741         }
2742
2743         return ieee80211_request_scan(sdata, req);
2744 }
2745
2746 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2747 {
2748         ieee80211_scan_cancel(wiphy_priv(wiphy));
2749 }
2750
2751 static int
2752 ieee80211_sched_scan_start(struct wiphy *wiphy,
2753                            struct net_device *dev,
2754                            struct cfg80211_sched_scan_request *req)
2755 {
2756         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2757
2758         if (!sdata->local->ops->sched_scan_start)
2759                 return -EOPNOTSUPP;
2760
2761         return ieee80211_request_sched_scan_start(sdata, req);
2762 }
2763
2764 static int
2765 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2766                           u64 reqid)
2767 {
2768         struct ieee80211_local *local = wiphy_priv(wiphy);
2769
2770         if (!local->ops->sched_scan_stop)
2771                 return -EOPNOTSUPP;
2772
2773         return ieee80211_request_sched_scan_stop(local);
2774 }
2775
2776 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2777                           struct cfg80211_auth_request *req)
2778 {
2779         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2780 }
2781
2782 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2783                            struct cfg80211_assoc_request *req)
2784 {
2785         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2786 }
2787
2788 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2789                             struct cfg80211_deauth_request *req)
2790 {
2791         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2792 }
2793
2794 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2795                               struct cfg80211_disassoc_request *req)
2796 {
2797         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2798 }
2799
2800 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2801                                struct cfg80211_ibss_params *params)
2802 {
2803         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2804 }
2805
2806 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2807 {
2808         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2809 }
2810
2811 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2812                               struct ocb_setup *setup)
2813 {
2814         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2815 }
2816
2817 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2818 {
2819         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2820 }
2821
2822 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2823                                     int rate[NUM_NL80211_BANDS])
2824 {
2825         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2826
2827         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2828                sizeof(int) * NUM_NL80211_BANDS);
2829
2830         ieee80211_link_info_change_notify(sdata, &sdata->deflink,
2831                                           BSS_CHANGED_MCAST_RATE);
2832
2833         return 0;
2834 }
2835
2836 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2837 {
2838         struct ieee80211_local *local = wiphy_priv(wiphy);
2839         int err;
2840
2841         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2842                 ieee80211_check_fast_xmit_all(local);
2843
2844                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2845
2846                 if (err) {
2847                         ieee80211_check_fast_xmit_all(local);
2848                         return err;
2849                 }
2850         }
2851
2852         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2853             (changed & WIPHY_PARAM_DYN_ACK)) {
2854                 s16 coverage_class;
2855
2856                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2857                                         wiphy->coverage_class : -1;
2858                 err = drv_set_coverage_class(local, coverage_class);
2859
2860                 if (err)
2861                         return err;
2862         }
2863
2864         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2865                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2866
2867                 if (err)
2868                         return err;
2869         }
2870
2871         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2872                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2873                         return -EINVAL;
2874                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2875         }
2876         if (changed & WIPHY_PARAM_RETRY_LONG) {
2877                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2878                         return -EINVAL;
2879                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2880         }
2881         if (changed &
2882             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2883                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2884
2885         if (changed & (WIPHY_PARAM_TXQ_LIMIT |
2886                        WIPHY_PARAM_TXQ_MEMORY_LIMIT |
2887                        WIPHY_PARAM_TXQ_QUANTUM))
2888                 ieee80211_txq_set_params(local);
2889
2890         return 0;
2891 }
2892
2893 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2894                                   struct wireless_dev *wdev,
2895                                   enum nl80211_tx_power_setting type, int mbm)
2896 {
2897         struct ieee80211_local *local = wiphy_priv(wiphy);
2898         struct ieee80211_sub_if_data *sdata;
2899         enum nl80211_tx_power_setting txp_type = type;
2900         bool update_txp_type = false;
2901         bool has_monitor = false;
2902
2903         if (wdev) {
2904                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2905
2906                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2907                         sdata = wiphy_dereference(local->hw.wiphy,
2908                                                   local->monitor_sdata);
2909                         if (!sdata)
2910                                 return -EOPNOTSUPP;
2911                 }
2912
2913                 switch (type) {
2914                 case NL80211_TX_POWER_AUTOMATIC:
2915                         sdata->deflink.user_power_level =
2916                                 IEEE80211_UNSET_POWER_LEVEL;
2917                         txp_type = NL80211_TX_POWER_LIMITED;
2918                         break;
2919                 case NL80211_TX_POWER_LIMITED:
2920                 case NL80211_TX_POWER_FIXED:
2921                         if (mbm < 0 || (mbm % 100))
2922                                 return -EOPNOTSUPP;
2923                         sdata->deflink.user_power_level = MBM_TO_DBM(mbm);
2924                         break;
2925                 }
2926
2927                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2928                         update_txp_type = true;
2929                         sdata->vif.bss_conf.txpower_type = txp_type;
2930                 }
2931
2932                 ieee80211_recalc_txpower(sdata, update_txp_type);
2933
2934                 return 0;
2935         }
2936
2937         switch (type) {
2938         case NL80211_TX_POWER_AUTOMATIC:
2939                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2940                 txp_type = NL80211_TX_POWER_LIMITED;
2941                 break;
2942         case NL80211_TX_POWER_LIMITED:
2943         case NL80211_TX_POWER_FIXED:
2944                 if (mbm < 0 || (mbm % 100))
2945                         return -EOPNOTSUPP;
2946                 local->user_power_level = MBM_TO_DBM(mbm);
2947                 break;
2948         }
2949
2950         mutex_lock(&local->iflist_mtx);
2951         list_for_each_entry(sdata, &local->interfaces, list) {
2952                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2953                         has_monitor = true;
2954                         continue;
2955                 }
2956                 sdata->deflink.user_power_level = local->user_power_level;
2957                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2958                         update_txp_type = true;
2959                 sdata->vif.bss_conf.txpower_type = txp_type;
2960         }
2961         list_for_each_entry(sdata, &local->interfaces, list) {
2962                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
2963                         continue;
2964                 ieee80211_recalc_txpower(sdata, update_txp_type);
2965         }
2966         mutex_unlock(&local->iflist_mtx);
2967
2968         if (has_monitor) {
2969                 sdata = wiphy_dereference(local->hw.wiphy,
2970                                           local->monitor_sdata);
2971                 if (sdata) {
2972                         sdata->deflink.user_power_level = local->user_power_level;
2973                         if (txp_type != sdata->vif.bss_conf.txpower_type)
2974                                 update_txp_type = true;
2975                         sdata->vif.bss_conf.txpower_type = txp_type;
2976
2977                         ieee80211_recalc_txpower(sdata, update_txp_type);
2978                 }
2979         }
2980
2981         return 0;
2982 }
2983
2984 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2985                                   struct wireless_dev *wdev,
2986                                   int *dbm)
2987 {
2988         struct ieee80211_local *local = wiphy_priv(wiphy);
2989         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2990
2991         if (local->ops->get_txpower)
2992                 return drv_get_txpower(local, sdata, dbm);
2993
2994         if (!local->use_chanctx)
2995                 *dbm = local->hw.conf.power_level;
2996         else
2997                 *dbm = sdata->vif.bss_conf.txpower;
2998
2999         return 0;
3000 }
3001
3002 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
3003 {
3004         struct ieee80211_local *local = wiphy_priv(wiphy);
3005
3006         drv_rfkill_poll(local);
3007 }
3008
3009 #ifdef CONFIG_NL80211_TESTMODE
3010 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
3011                                   struct wireless_dev *wdev,
3012                                   void *data, int len)
3013 {
3014         struct ieee80211_local *local = wiphy_priv(wiphy);
3015         struct ieee80211_vif *vif = NULL;
3016
3017         if (!local->ops->testmode_cmd)
3018                 return -EOPNOTSUPP;
3019
3020         if (wdev) {
3021                 struct ieee80211_sub_if_data *sdata;
3022
3023                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3024                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
3025                         vif = &sdata->vif;
3026         }
3027
3028         return local->ops->testmode_cmd(&local->hw, vif, data, len);
3029 }
3030
3031 static int ieee80211_testmode_dump(struct wiphy *wiphy,
3032                                    struct sk_buff *skb,
3033                                    struct netlink_callback *cb,
3034                                    void *data, int len)
3035 {
3036         struct ieee80211_local *local = wiphy_priv(wiphy);
3037
3038         if (!local->ops->testmode_dump)
3039                 return -EOPNOTSUPP;
3040
3041         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
3042 }
3043 #endif
3044
3045 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
3046                                  struct ieee80211_link_data *link,
3047                                  enum ieee80211_smps_mode smps_mode)
3048 {
3049         const u8 *ap;
3050         enum ieee80211_smps_mode old_req;
3051         int err;
3052         struct sta_info *sta;
3053         bool tdls_peer_found = false;
3054
3055         lockdep_assert_held(&sdata->wdev.mtx);
3056
3057         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
3058                 return -EINVAL;
3059
3060         old_req = link->u.mgd.req_smps;
3061         link->u.mgd.req_smps = smps_mode;
3062
3063         if (old_req == smps_mode &&
3064             smps_mode != IEEE80211_SMPS_AUTOMATIC)
3065                 return 0;
3066
3067         /*
3068          * If not associated, or current association is not an HT
3069          * association, there's no need to do anything, just store
3070          * the new value until we associate.
3071          */
3072         if (!sdata->u.mgd.associated ||
3073             link->conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
3074                 return 0;
3075
3076         ap = link->u.mgd.bssid;
3077
3078         rcu_read_lock();
3079         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
3080                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
3081                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
3082                         continue;
3083
3084                 tdls_peer_found = true;
3085                 break;
3086         }
3087         rcu_read_unlock();
3088
3089         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
3090                 if (tdls_peer_found || !sdata->u.mgd.powersave)
3091                         smps_mode = IEEE80211_SMPS_OFF;
3092                 else
3093                         smps_mode = IEEE80211_SMPS_DYNAMIC;
3094         }
3095
3096         /* send SM PS frame to AP */
3097         err = ieee80211_send_smps_action(sdata, smps_mode,
3098                                          ap, ap);
3099         if (err)
3100                 link->u.mgd.req_smps = old_req;
3101         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
3102                 ieee80211_teardown_tdls_peers(sdata);
3103
3104         return err;
3105 }
3106
3107 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
3108                                     bool enabled, int timeout)
3109 {
3110         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3111         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3112         unsigned int link_id;
3113
3114         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3115                 return -EOPNOTSUPP;
3116
3117         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
3118                 return -EOPNOTSUPP;
3119
3120         if (enabled == sdata->u.mgd.powersave &&
3121             timeout == local->dynamic_ps_forced_timeout)
3122                 return 0;
3123
3124         sdata->u.mgd.powersave = enabled;
3125         local->dynamic_ps_forced_timeout = timeout;
3126
3127         /* no change, but if automatic follow powersave */
3128         sdata_lock(sdata);
3129         for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) {
3130                 struct ieee80211_link_data *link;
3131
3132                 link = sdata_dereference(sdata->link[link_id], sdata);
3133
3134                 if (!link)
3135                         continue;
3136                 __ieee80211_request_smps_mgd(sdata, link,
3137                                              link->u.mgd.req_smps);
3138         }
3139         sdata_unlock(sdata);
3140
3141         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
3142                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
3143
3144         ieee80211_recalc_ps(local);
3145         ieee80211_recalc_ps_vif(sdata);
3146         ieee80211_check_fast_rx_iface(sdata);
3147
3148         return 0;
3149 }
3150
3151 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
3152                                          struct net_device *dev,
3153                                          s32 rssi_thold, u32 rssi_hyst)
3154 {
3155         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3156         struct ieee80211_vif *vif = &sdata->vif;
3157         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
3158
3159         if (rssi_thold == bss_conf->cqm_rssi_thold &&
3160             rssi_hyst == bss_conf->cqm_rssi_hyst)
3161                 return 0;
3162
3163         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
3164             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
3165                 return -EOPNOTSUPP;
3166
3167         bss_conf->cqm_rssi_thold = rssi_thold;
3168         bss_conf->cqm_rssi_hyst = rssi_hyst;
3169         bss_conf->cqm_rssi_low = 0;
3170         bss_conf->cqm_rssi_high = 0;
3171         sdata->deflink.u.mgd.last_cqm_event_signal = 0;
3172
3173         /* tell the driver upon association, unless already associated */
3174         if (sdata->u.mgd.associated &&
3175             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
3176                 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
3177                                                   BSS_CHANGED_CQM);
3178
3179         return 0;
3180 }
3181
3182 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
3183                                                struct net_device *dev,
3184                                                s32 rssi_low, s32 rssi_high)
3185 {
3186         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3187         struct ieee80211_vif *vif = &sdata->vif;
3188         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
3189
3190         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
3191                 return -EOPNOTSUPP;
3192
3193         bss_conf->cqm_rssi_low = rssi_low;
3194         bss_conf->cqm_rssi_high = rssi_high;
3195         bss_conf->cqm_rssi_thold = 0;
3196         bss_conf->cqm_rssi_hyst = 0;
3197         sdata->deflink.u.mgd.last_cqm_event_signal = 0;
3198
3199         /* tell the driver upon association, unless already associated */
3200         if (sdata->u.mgd.associated &&
3201             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
3202                 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
3203                                                   BSS_CHANGED_CQM);
3204
3205         return 0;
3206 }
3207
3208 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
3209                                       struct net_device *dev,
3210                                       unsigned int link_id,
3211                                       const u8 *addr,
3212                                       const struct cfg80211_bitrate_mask *mask)
3213 {
3214         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3215         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3216         int i, ret;
3217
3218         if (!ieee80211_sdata_running(sdata))
3219                 return -ENETDOWN;
3220
3221         /*
3222          * If active validate the setting and reject it if it doesn't leave
3223          * at least one basic rate usable, since we really have to be able
3224          * to send something, and if we're an AP we have to be able to do
3225          * so at a basic rate so that all clients can receive it.
3226          */
3227         if (rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf) &&
3228             sdata->vif.bss_conf.chandef.chan) {
3229                 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3230                 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band;
3231
3232                 if (!(mask->control[band].legacy & basic_rates))
3233                         return -EINVAL;
3234         }
3235
3236         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
3237                 ret = drv_set_bitrate_mask(local, sdata, mask);
3238                 if (ret)
3239                         return ret;
3240         }
3241
3242         for (i = 0; i < NUM_NL80211_BANDS; i++) {
3243                 struct ieee80211_supported_band *sband = wiphy->bands[i];
3244                 int j;
3245
3246                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
3247                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
3248                        sizeof(mask->control[i].ht_mcs));
3249                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
3250                        mask->control[i].vht_mcs,
3251                        sizeof(mask->control[i].vht_mcs));
3252
3253                 sdata->rc_has_mcs_mask[i] = false;
3254                 sdata->rc_has_vht_mcs_mask[i] = false;
3255                 if (!sband)
3256                         continue;
3257
3258                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
3259                         if (sdata->rc_rateidx_mcs_mask[i][j] != 0xff) {
3260                                 sdata->rc_has_mcs_mask[i] = true;
3261                                 break;
3262                         }
3263                 }
3264
3265                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
3266                         if (sdata->rc_rateidx_vht_mcs_mask[i][j] != 0xffff) {
3267                                 sdata->rc_has_vht_mcs_mask[i] = true;
3268                                 break;
3269                         }
3270                 }
3271         }
3272
3273         return 0;
3274 }
3275
3276 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
3277                                            struct net_device *dev,
3278                                            struct cfg80211_chan_def *chandef,
3279                                            u32 cac_time_ms)
3280 {
3281         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3282         struct ieee80211_local *local = sdata->local;
3283         int err;
3284
3285         mutex_lock(&local->mtx);
3286         if (!list_empty(&local->roc_list) || local->scanning) {
3287                 err = -EBUSY;
3288                 goto out_unlock;
3289         }
3290
3291         /* whatever, but channel contexts should not complain about that one */
3292         sdata->deflink.smps_mode = IEEE80211_SMPS_OFF;
3293         sdata->deflink.needed_rx_chains = local->rx_chains;
3294
3295         err = ieee80211_link_use_channel(&sdata->deflink, chandef,
3296                                          IEEE80211_CHANCTX_SHARED);
3297         if (err)
3298                 goto out_unlock;
3299
3300         ieee80211_queue_delayed_work(&sdata->local->hw,
3301                                      &sdata->deflink.dfs_cac_timer_work,
3302                                      msecs_to_jiffies(cac_time_ms));
3303
3304  out_unlock:
3305         mutex_unlock(&local->mtx);
3306         return err;
3307 }
3308
3309 static void ieee80211_end_cac(struct wiphy *wiphy,
3310                               struct net_device *dev)
3311 {
3312         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3313         struct ieee80211_local *local = sdata->local;
3314
3315         mutex_lock(&local->mtx);
3316         list_for_each_entry(sdata, &local->interfaces, list) {
3317                 /* it might be waiting for the local->mtx, but then
3318                  * by the time it gets it, sdata->wdev.cac_started
3319                  * will no longer be true
3320                  */
3321                 cancel_delayed_work(&sdata->deflink.dfs_cac_timer_work);
3322
3323                 if (sdata->wdev.cac_started) {
3324                         ieee80211_link_release_channel(&sdata->deflink);
3325                         sdata->wdev.cac_started = false;
3326                 }
3327         }
3328         mutex_unlock(&local->mtx);
3329 }
3330
3331 static struct cfg80211_beacon_data *
3332 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
3333 {
3334         struct cfg80211_beacon_data *new_beacon;
3335         u8 *pos;
3336         int len;
3337
3338         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
3339               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
3340               beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len +
3341               ieee80211_get_mbssid_beacon_len(beacon->mbssid_ies);
3342
3343         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
3344         if (!new_beacon)
3345                 return NULL;
3346
3347         if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) {
3348                 new_beacon->mbssid_ies =
3349                         kzalloc(struct_size(new_beacon->mbssid_ies,
3350                                             elem, beacon->mbssid_ies->cnt),
3351                                 GFP_KERNEL);
3352                 if (!new_beacon->mbssid_ies) {
3353                         kfree(new_beacon);
3354                         return NULL;
3355                 }
3356         }
3357
3358         pos = (u8 *)(new_beacon + 1);
3359         if (beacon->head_len) {
3360                 new_beacon->head_len = beacon->head_len;
3361                 new_beacon->head = pos;
3362                 memcpy(pos, beacon->head, beacon->head_len);
3363                 pos += beacon->head_len;
3364         }
3365         if (beacon->tail_len) {
3366                 new_beacon->tail_len = beacon->tail_len;
3367                 new_beacon->tail = pos;
3368                 memcpy(pos, beacon->tail, beacon->tail_len);
3369                 pos += beacon->tail_len;
3370         }
3371         if (beacon->beacon_ies_len) {
3372                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
3373                 new_beacon->beacon_ies = pos;
3374                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
3375                 pos += beacon->beacon_ies_len;
3376         }
3377         if (beacon->proberesp_ies_len) {
3378                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
3379                 new_beacon->proberesp_ies = pos;
3380                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
3381                 pos += beacon->proberesp_ies_len;
3382         }
3383         if (beacon->assocresp_ies_len) {
3384                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
3385                 new_beacon->assocresp_ies = pos;
3386                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
3387                 pos += beacon->assocresp_ies_len;
3388         }
3389         if (beacon->probe_resp_len) {
3390                 new_beacon->probe_resp_len = beacon->probe_resp_len;
3391                 new_beacon->probe_resp = pos;
3392                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
3393                 pos += beacon->probe_resp_len;
3394         }
3395         if (beacon->mbssid_ies && beacon->mbssid_ies->cnt)
3396                 pos += ieee80211_copy_mbssid_beacon(pos,
3397                                                     new_beacon->mbssid_ies,
3398                                                     beacon->mbssid_ies);
3399
3400         /* might copy -1, meaning no changes requested */
3401         new_beacon->ftm_responder = beacon->ftm_responder;
3402         if (beacon->lci) {
3403                 new_beacon->lci_len = beacon->lci_len;
3404                 new_beacon->lci = pos;
3405                 memcpy(pos, beacon->lci, beacon->lci_len);
3406                 pos += beacon->lci_len;
3407         }
3408         if (beacon->civicloc) {
3409                 new_beacon->civicloc_len = beacon->civicloc_len;
3410                 new_beacon->civicloc = pos;
3411                 memcpy(pos, beacon->civicloc, beacon->civicloc_len);
3412                 pos += beacon->civicloc_len;
3413         }
3414
3415         return new_beacon;
3416 }
3417
3418 void ieee80211_csa_finish(struct ieee80211_vif *vif)
3419 {
3420         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3421         struct ieee80211_local *local = sdata->local;
3422
3423         rcu_read_lock();
3424
3425         if (vif->mbssid_tx_vif == vif) {
3426                 /* Trigger ieee80211_csa_finish() on the non-transmitting
3427                  * interfaces when channel switch is received on
3428                  * transmitting interface
3429                  */
3430                 struct ieee80211_sub_if_data *iter;
3431
3432                 list_for_each_entry_rcu(iter, &local->interfaces, list) {
3433                         if (!ieee80211_sdata_running(iter))
3434                                 continue;
3435
3436                         if (iter == sdata || iter->vif.mbssid_tx_vif != vif)
3437                                 continue;
3438
3439                         ieee80211_queue_work(&iter->local->hw,
3440                                              &iter->deflink.csa_finalize_work);
3441                 }
3442         }
3443         ieee80211_queue_work(&local->hw, &sdata->deflink.csa_finalize_work);
3444
3445         rcu_read_unlock();
3446 }
3447 EXPORT_SYMBOL(ieee80211_csa_finish);
3448
3449 void ieee80211_channel_switch_disconnect(struct ieee80211_vif *vif, bool block_tx)
3450 {
3451         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3452         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3453         struct ieee80211_local *local = sdata->local;
3454
3455         sdata->deflink.csa_block_tx = block_tx;
3456         sdata_info(sdata, "channel switch failed, disconnecting\n");
3457         ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work);
3458 }
3459 EXPORT_SYMBOL(ieee80211_channel_switch_disconnect);
3460
3461 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
3462                                           u32 *changed)
3463 {
3464         int err;
3465
3466         switch (sdata->vif.type) {
3467         case NL80211_IFTYPE_AP:
3468                 if (!sdata->deflink.u.ap.next_beacon)
3469                         return -EINVAL;
3470
3471                 err = ieee80211_assign_beacon(sdata, &sdata->deflink,
3472                                               sdata->deflink.u.ap.next_beacon,
3473                                               NULL, NULL);
3474                 ieee80211_free_next_beacon(&sdata->deflink);
3475
3476                 if (err < 0)
3477                         return err;
3478                 *changed |= err;
3479                 break;
3480         case NL80211_IFTYPE_ADHOC:
3481                 err = ieee80211_ibss_finish_csa(sdata);
3482                 if (err < 0)
3483                         return err;
3484                 *changed |= err;
3485                 break;
3486 #ifdef CONFIG_MAC80211_MESH
3487         case NL80211_IFTYPE_MESH_POINT:
3488                 err = ieee80211_mesh_finish_csa(sdata);
3489                 if (err < 0)
3490                         return err;
3491                 *changed |= err;
3492                 break;
3493 #endif
3494         default:
3495                 WARN_ON(1);
3496                 return -EINVAL;
3497         }
3498
3499         return 0;
3500 }
3501
3502 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3503 {
3504         struct ieee80211_local *local = sdata->local;
3505         u32 changed = 0;
3506         int err;
3507
3508         sdata_assert_lock(sdata);
3509         lockdep_assert_held(&local->mtx);
3510         lockdep_assert_held(&local->chanctx_mtx);
3511
3512         /*
3513          * using reservation isn't immediate as it may be deferred until later
3514          * with multi-vif. once reservation is complete it will re-schedule the
3515          * work with no reserved_chanctx so verify chandef to check if it
3516          * completed successfully
3517          */
3518
3519         if (sdata->deflink.reserved_chanctx) {
3520                 /*
3521                  * with multi-vif csa driver may call ieee80211_csa_finish()
3522                  * many times while waiting for other interfaces to use their
3523                  * reservations
3524                  */
3525                 if (sdata->deflink.reserved_ready)
3526                         return 0;
3527
3528                 return ieee80211_link_use_reserved_context(&sdata->deflink);
3529         }
3530
3531         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
3532                                         &sdata->deflink.csa_chandef))
3533                 return -EINVAL;
3534
3535         sdata->vif.bss_conf.csa_active = false;
3536
3537         err = ieee80211_set_after_csa_beacon(sdata, &changed);
3538         if (err)
3539                 return err;
3540
3541         ieee80211_link_info_change_notify(sdata, &sdata->deflink, changed);
3542
3543         if (sdata->deflink.csa_block_tx) {
3544                 ieee80211_wake_vif_queues(local, sdata,
3545                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3546                 sdata->deflink.csa_block_tx = false;
3547         }
3548
3549         err = drv_post_channel_switch(sdata);
3550         if (err)
3551                 return err;
3552
3553         cfg80211_ch_switch_notify(sdata->dev, &sdata->deflink.csa_chandef, 0);
3554
3555         return 0;
3556 }
3557
3558 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3559 {
3560         if (__ieee80211_csa_finalize(sdata)) {
3561                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3562                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3563                                     GFP_KERNEL);
3564         }
3565 }
3566
3567 void ieee80211_csa_finalize_work(struct work_struct *work)
3568 {
3569         struct ieee80211_sub_if_data *sdata =
3570                 container_of(work, struct ieee80211_sub_if_data,
3571                              deflink.csa_finalize_work);
3572         struct ieee80211_local *local = sdata->local;
3573
3574         sdata_lock(sdata);
3575         mutex_lock(&local->mtx);
3576         mutex_lock(&local->chanctx_mtx);
3577
3578         /* AP might have been stopped while waiting for the lock. */
3579         if (!sdata->vif.bss_conf.csa_active)
3580                 goto unlock;
3581
3582         if (!ieee80211_sdata_running(sdata))
3583                 goto unlock;
3584
3585         ieee80211_csa_finalize(sdata);
3586
3587 unlock:
3588         mutex_unlock(&local->chanctx_mtx);
3589         mutex_unlock(&local->mtx);
3590         sdata_unlock(sdata);
3591 }
3592
3593 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3594                                     struct cfg80211_csa_settings *params,
3595                                     u32 *changed)
3596 {
3597         struct ieee80211_csa_settings csa = {};
3598         int err;
3599
3600         switch (sdata->vif.type) {
3601         case NL80211_IFTYPE_AP:
3602                 sdata->deflink.u.ap.next_beacon =
3603                         cfg80211_beacon_dup(&params->beacon_after);
3604                 if (!sdata->deflink.u.ap.next_beacon)
3605                         return -ENOMEM;
3606
3607                 /*
3608                  * With a count of 0, we don't have to wait for any
3609                  * TBTT before switching, so complete the CSA
3610                  * immediately.  In theory, with a count == 1 we
3611                  * should delay the switch until just before the next
3612                  * TBTT, but that would complicate things so we switch
3613                  * immediately too.  If we would delay the switch
3614                  * until the next TBTT, we would have to set the probe
3615                  * response here.
3616                  *
3617                  * TODO: A channel switch with count <= 1 without
3618                  * sending a CSA action frame is kind of useless,
3619                  * because the clients won't know we're changing
3620                  * channels.  The action frame must be implemented
3621                  * either here or in the userspace.
3622                  */
3623                 if (params->count <= 1)
3624                         break;
3625
3626                 if ((params->n_counter_offsets_beacon >
3627                      IEEE80211_MAX_CNTDWN_COUNTERS_NUM) ||
3628                     (params->n_counter_offsets_presp >
3629                      IEEE80211_MAX_CNTDWN_COUNTERS_NUM)) {
3630                         ieee80211_free_next_beacon(&sdata->deflink);
3631                         return -EINVAL;
3632                 }
3633
3634                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3635                 csa.counter_offsets_presp = params->counter_offsets_presp;
3636                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3637                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3638                 csa.count = params->count;
3639
3640                 err = ieee80211_assign_beacon(sdata, &sdata->deflink,
3641                                               &params->beacon_csa, &csa,
3642                                               NULL);
3643                 if (err < 0) {
3644                         ieee80211_free_next_beacon(&sdata->deflink);
3645                         return err;
3646                 }
3647                 *changed |= err;
3648
3649                 break;
3650         case NL80211_IFTYPE_ADHOC:
3651                 if (!sdata->vif.cfg.ibss_joined)
3652                         return -EINVAL;
3653
3654                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3655                         return -EINVAL;
3656
3657                 switch (params->chandef.width) {
3658                 case NL80211_CHAN_WIDTH_40:
3659                         if (cfg80211_get_chandef_type(&params->chandef) !=
3660                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3661                                 return -EINVAL;
3662                         break;
3663                 case NL80211_CHAN_WIDTH_5:
3664                 case NL80211_CHAN_WIDTH_10:
3665                 case NL80211_CHAN_WIDTH_20_NOHT:
3666                 case NL80211_CHAN_WIDTH_20:
3667                         break;
3668                 default:
3669                         return -EINVAL;
3670                 }
3671
3672                 /* changes into another band are not supported */
3673                 if (sdata->u.ibss.chandef.chan->band !=
3674                     params->chandef.chan->band)
3675                         return -EINVAL;
3676
3677                 /* see comments in the NL80211_IFTYPE_AP block */
3678                 if (params->count > 1) {
3679                         err = ieee80211_ibss_csa_beacon(sdata, params);
3680                         if (err < 0)
3681                                 return err;
3682                         *changed |= err;
3683                 }
3684
3685                 ieee80211_send_action_csa(sdata, params);
3686
3687                 break;
3688 #ifdef CONFIG_MAC80211_MESH
3689         case NL80211_IFTYPE_MESH_POINT: {
3690                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3691
3692                 /* changes into another band are not supported */
3693                 if (sdata->vif.bss_conf.chandef.chan->band !=
3694                     params->chandef.chan->band)
3695                         return -EINVAL;
3696
3697                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3698                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3699                         if (!ifmsh->pre_value)
3700                                 ifmsh->pre_value = 1;
3701                         else
3702                                 ifmsh->pre_value++;
3703                 }
3704
3705                 /* see comments in the NL80211_IFTYPE_AP block */
3706                 if (params->count > 1) {
3707                         err = ieee80211_mesh_csa_beacon(sdata, params);
3708                         if (err < 0) {
3709                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3710                                 return err;
3711                         }
3712                         *changed |= err;
3713                 }
3714
3715                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3716                         ieee80211_send_action_csa(sdata, params);
3717
3718                 break;
3719                 }
3720 #endif
3721         default:
3722                 return -EOPNOTSUPP;
3723         }
3724
3725         return 0;
3726 }
3727
3728 static void ieee80211_color_change_abort(struct ieee80211_sub_if_data  *sdata)
3729 {
3730         sdata->vif.bss_conf.color_change_active = false;
3731
3732         ieee80211_free_next_beacon(&sdata->deflink);
3733
3734         cfg80211_color_change_aborted_notify(sdata->dev);
3735 }
3736
3737 static int
3738 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3739                            struct cfg80211_csa_settings *params)
3740 {
3741         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3742         struct ieee80211_local *local = sdata->local;
3743         struct ieee80211_channel_switch ch_switch;
3744         struct ieee80211_chanctx_conf *conf;
3745         struct ieee80211_chanctx *chanctx;
3746         u32 changed = 0;
3747         int err;
3748
3749         sdata_assert_lock(sdata);
3750         lockdep_assert_held(&local->mtx);
3751
3752         if (!list_empty(&local->roc_list) || local->scanning)
3753                 return -EBUSY;
3754
3755         if (sdata->wdev.cac_started)
3756                 return -EBUSY;
3757
3758         if (cfg80211_chandef_identical(&params->chandef,
3759                                        &sdata->vif.bss_conf.chandef))
3760                 return -EINVAL;
3761
3762         /* don't allow another channel switch if one is already active. */
3763         if (sdata->vif.bss_conf.csa_active)
3764                 return -EBUSY;
3765
3766         mutex_lock(&local->chanctx_mtx);
3767         conf = rcu_dereference_protected(sdata->vif.bss_conf.chanctx_conf,
3768                                          lockdep_is_held(&local->chanctx_mtx));
3769         if (!conf) {
3770                 err = -EBUSY;
3771                 goto out;
3772         }
3773
3774         if (params->chandef.chan->freq_offset) {
3775                 /* this may work, but is untested */
3776                 err = -EOPNOTSUPP;
3777                 goto out;
3778         }
3779
3780         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3781
3782         ch_switch.timestamp = 0;
3783         ch_switch.device_timestamp = 0;
3784         ch_switch.block_tx = params->block_tx;
3785         ch_switch.chandef = params->chandef;
3786         ch_switch.count = params->count;
3787
3788         err = drv_pre_channel_switch(sdata, &ch_switch);
3789         if (err)
3790                 goto out;
3791
3792         err = ieee80211_link_reserve_chanctx(&sdata->deflink, &params->chandef,
3793                                              chanctx->mode,
3794                                              params->radar_required);
3795         if (err)
3796                 goto out;
3797
3798         /* if reservation is invalid then this will fail */
3799         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3800         if (err) {
3801                 ieee80211_link_unreserve_chanctx(&sdata->deflink);
3802                 goto out;
3803         }
3804
3805         /* if there is a color change in progress, abort it */
3806         if (sdata->vif.bss_conf.color_change_active)
3807                 ieee80211_color_change_abort(sdata);
3808
3809         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3810         if (err) {
3811                 ieee80211_link_unreserve_chanctx(&sdata->deflink);
3812                 goto out;
3813         }
3814
3815         sdata->deflink.csa_chandef = params->chandef;
3816         sdata->deflink.csa_block_tx = params->block_tx;
3817         sdata->vif.bss_conf.csa_active = true;
3818
3819         if (sdata->deflink.csa_block_tx)
3820                 ieee80211_stop_vif_queues(local, sdata,
3821                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3822
3823         cfg80211_ch_switch_started_notify(sdata->dev,
3824                                           &sdata->deflink.csa_chandef, 0,
3825                                           params->count, params->block_tx);
3826
3827         if (changed) {
3828                 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
3829                                                   changed);
3830                 drv_channel_switch_beacon(sdata, &params->chandef);
3831         } else {
3832                 /* if the beacon didn't change, we can finalize immediately */
3833                 ieee80211_csa_finalize(sdata);
3834         }
3835
3836 out:
3837         mutex_unlock(&local->chanctx_mtx);
3838         return err;
3839 }
3840
3841 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3842                              struct cfg80211_csa_settings *params)
3843 {
3844         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3845         struct ieee80211_local *local = sdata->local;
3846         int err;
3847
3848         mutex_lock(&local->mtx);
3849         err = __ieee80211_channel_switch(wiphy, dev, params);
3850         mutex_unlock(&local->mtx);
3851
3852         return err;
3853 }
3854
3855 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3856 {
3857         lockdep_assert_held(&local->mtx);
3858
3859         local->roc_cookie_counter++;
3860
3861         /* wow, you wrapped 64 bits ... more likely a bug */
3862         if (WARN_ON(local->roc_cookie_counter == 0))
3863                 local->roc_cookie_counter++;
3864
3865         return local->roc_cookie_counter;
3866 }
3867
3868 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3869                              u64 *cookie, gfp_t gfp)
3870 {
3871         unsigned long spin_flags;
3872         struct sk_buff *ack_skb;
3873         int id;
3874
3875         ack_skb = skb_copy(skb, gfp);
3876         if (!ack_skb)
3877                 return -ENOMEM;
3878
3879         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3880         id = idr_alloc(&local->ack_status_frames, ack_skb,
3881                        1, 0x2000, GFP_ATOMIC);
3882         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3883
3884         if (id < 0) {
3885                 kfree_skb(ack_skb);
3886                 return -ENOMEM;
3887         }
3888
3889         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3890
3891         *cookie = ieee80211_mgmt_tx_cookie(local);
3892         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3893
3894         return 0;
3895 }
3896
3897 static void
3898 ieee80211_update_mgmt_frame_registrations(struct wiphy *wiphy,
3899                                           struct wireless_dev *wdev,
3900                                           struct mgmt_frame_regs *upd)
3901 {
3902         struct ieee80211_local *local = wiphy_priv(wiphy);
3903         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3904         u32 preq_mask = BIT(IEEE80211_STYPE_PROBE_REQ >> 4);
3905         u32 action_mask = BIT(IEEE80211_STYPE_ACTION >> 4);
3906         bool global_change, intf_change;
3907
3908         global_change =
3909                 (local->probe_req_reg != !!(upd->global_stypes & preq_mask)) ||
3910                 (local->rx_mcast_action_reg !=
3911                  !!(upd->global_mcast_stypes & action_mask));
3912         local->probe_req_reg = upd->global_stypes & preq_mask;
3913         local->rx_mcast_action_reg = upd->global_mcast_stypes & action_mask;
3914
3915         intf_change = (sdata->vif.probe_req_reg !=
3916                        !!(upd->interface_stypes & preq_mask)) ||
3917                 (sdata->vif.rx_mcast_action_reg !=
3918                  !!(upd->interface_mcast_stypes & action_mask));
3919         sdata->vif.probe_req_reg = upd->interface_stypes & preq_mask;
3920         sdata->vif.rx_mcast_action_reg =
3921                 upd->interface_mcast_stypes & action_mask;
3922
3923         if (!local->open_count)
3924                 return;
3925
3926         if (intf_change && ieee80211_sdata_running(sdata))
3927                 drv_config_iface_filter(local, sdata,
3928                                         sdata->vif.probe_req_reg ?
3929                                                 FIF_PROBE_REQ : 0,
3930                                         FIF_PROBE_REQ);
3931
3932         if (global_change)
3933                 ieee80211_configure_filter(local);
3934 }
3935
3936 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3937 {
3938         struct ieee80211_local *local = wiphy_priv(wiphy);
3939
3940         if (local->started)
3941                 return -EOPNOTSUPP;
3942
3943         return drv_set_antenna(local, tx_ant, rx_ant);
3944 }
3945
3946 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3947 {
3948         struct ieee80211_local *local = wiphy_priv(wiphy);
3949
3950         return drv_get_antenna(local, tx_ant, rx_ant);
3951 }
3952
3953 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3954                                     struct net_device *dev,
3955                                     struct cfg80211_gtk_rekey_data *data)
3956 {
3957         struct ieee80211_local *local = wiphy_priv(wiphy);
3958         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3959
3960         if (!local->ops->set_rekey_data)
3961                 return -EOPNOTSUPP;
3962
3963         drv_set_rekey_data(local, sdata, data);
3964
3965         return 0;
3966 }
3967
3968 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3969                                   const u8 *peer, u64 *cookie)
3970 {
3971         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3972         struct ieee80211_local *local = sdata->local;
3973         struct ieee80211_qos_hdr *nullfunc;
3974         struct sk_buff *skb;
3975         int size = sizeof(*nullfunc);
3976         __le16 fc;
3977         bool qos;
3978         struct ieee80211_tx_info *info;
3979         struct sta_info *sta;
3980         struct ieee80211_chanctx_conf *chanctx_conf;
3981         enum nl80211_band band;
3982         int ret;
3983
3984         /* the lock is needed to assign the cookie later */
3985         mutex_lock(&local->mtx);
3986
3987         rcu_read_lock();
3988         chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
3989         if (WARN_ON(!chanctx_conf)) {
3990                 ret = -EINVAL;
3991                 goto unlock;
3992         }
3993         band = chanctx_conf->def.chan->band;
3994         sta = sta_info_get_bss(sdata, peer);
3995         if (sta) {
3996                 qos = sta->sta.wme;
3997         } else {
3998                 ret = -ENOLINK;
3999                 goto unlock;
4000         }
4001
4002         if (qos) {
4003                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
4004                                  IEEE80211_STYPE_QOS_NULLFUNC |
4005                                  IEEE80211_FCTL_FROMDS);
4006         } else {
4007                 size -= 2;
4008                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
4009                                  IEEE80211_STYPE_NULLFUNC |
4010                                  IEEE80211_FCTL_FROMDS);
4011         }
4012
4013         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
4014         if (!skb) {
4015                 ret = -ENOMEM;
4016                 goto unlock;
4017         }
4018
4019         skb->dev = dev;
4020
4021         skb_reserve(skb, local->hw.extra_tx_headroom);
4022
4023         nullfunc = skb_put(skb, size);
4024         nullfunc->frame_control = fc;
4025         nullfunc->duration_id = 0;
4026         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
4027         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
4028         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
4029         nullfunc->seq_ctrl = 0;
4030
4031         info = IEEE80211_SKB_CB(skb);
4032
4033         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
4034                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
4035         info->band = band;
4036
4037         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
4038         skb->priority = 7;
4039         if (qos)
4040                 nullfunc->qos_ctrl = cpu_to_le16(7);
4041
4042         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
4043         if (ret) {
4044                 kfree_skb(skb);
4045                 goto unlock;
4046         }
4047
4048         local_bh_disable();
4049         ieee80211_xmit(sdata, sta, skb);
4050         local_bh_enable();
4051
4052         ret = 0;
4053 unlock:
4054         rcu_read_unlock();
4055         mutex_unlock(&local->mtx);
4056
4057         return ret;
4058 }
4059
4060 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
4061                                      struct wireless_dev *wdev,
4062                                      unsigned int link_id,
4063                                      struct cfg80211_chan_def *chandef)
4064 {
4065         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4066         struct ieee80211_local *local = wiphy_priv(wiphy);
4067         struct ieee80211_chanctx_conf *chanctx_conf;
4068         struct ieee80211_link_data *link;
4069         int ret = -ENODATA;
4070
4071         rcu_read_lock();
4072         link = rcu_dereference(sdata->link[link_id]);
4073         if (!link) {
4074                 ret = -ENOLINK;
4075                 goto out;
4076         }
4077
4078         chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
4079         if (chanctx_conf) {
4080                 *chandef = link->conf->chandef;
4081                 ret = 0;
4082         } else if (local->open_count > 0 &&
4083                    local->open_count == local->monitors &&
4084                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
4085                 if (local->use_chanctx)
4086                         *chandef = local->monitor_chandef;
4087                 else
4088                         *chandef = local->_oper_chandef;
4089                 ret = 0;
4090         }
4091 out:
4092         rcu_read_unlock();
4093
4094         return ret;
4095 }
4096
4097 #ifdef CONFIG_PM
4098 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
4099 {
4100         drv_set_wakeup(wiphy_priv(wiphy), enabled);
4101 }
4102 #endif
4103
4104 static int ieee80211_set_qos_map(struct wiphy *wiphy,
4105                                  struct net_device *dev,
4106                                  struct cfg80211_qos_map *qos_map)
4107 {
4108         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4109         struct mac80211_qos_map *new_qos_map, *old_qos_map;
4110
4111         if (qos_map) {
4112                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
4113                 if (!new_qos_map)
4114                         return -ENOMEM;
4115                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
4116         } else {
4117                 /* A NULL qos_map was passed to disable QoS mapping */
4118                 new_qos_map = NULL;
4119         }
4120
4121         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
4122         rcu_assign_pointer(sdata->qos_map, new_qos_map);
4123         if (old_qos_map)
4124                 kfree_rcu(old_qos_map, rcu_head);
4125
4126         return 0;
4127 }
4128
4129 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
4130                                       struct net_device *dev,
4131                                       unsigned int link_id,
4132                                       struct cfg80211_chan_def *chandef)
4133 {
4134         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4135         struct ieee80211_link_data *link;
4136         int ret;
4137         u32 changed = 0;
4138
4139         link = sdata_dereference(sdata->link[link_id], sdata);
4140
4141         ret = ieee80211_link_change_bandwidth(link, chandef, &changed);
4142         if (ret == 0)
4143                 ieee80211_link_info_change_notify(sdata, link, changed);
4144
4145         return ret;
4146 }
4147
4148 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
4149                                u8 tsid, const u8 *peer, u8 up,
4150                                u16 admitted_time)
4151 {
4152         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4153         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4154         int ac = ieee802_1d_to_ac[up];
4155
4156         if (sdata->vif.type != NL80211_IFTYPE_STATION)
4157                 return -EOPNOTSUPP;
4158
4159         if (!(sdata->wmm_acm & BIT(up)))
4160                 return -EINVAL;
4161
4162         if (ifmgd->tx_tspec[ac].admitted_time)
4163                 return -EBUSY;
4164
4165         if (admitted_time) {
4166                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
4167                 ifmgd->tx_tspec[ac].tsid = tsid;
4168                 ifmgd->tx_tspec[ac].up = up;
4169         }
4170
4171         return 0;
4172 }
4173
4174 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
4175                                u8 tsid, const u8 *peer)
4176 {
4177         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4178         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4179         struct ieee80211_local *local = wiphy_priv(wiphy);
4180         int ac;
4181
4182         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
4183                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
4184
4185                 /* skip unused entries */
4186                 if (!tx_tspec->admitted_time)
4187                         continue;
4188
4189                 if (tx_tspec->tsid != tsid)
4190                         continue;
4191
4192                 /* due to this new packets will be reassigned to non-ACM ACs */
4193                 tx_tspec->up = -1;
4194
4195                 /* Make sure that all packets have been sent to avoid to
4196                  * restore the QoS params on packets that are still on the
4197                  * queues.
4198                  */
4199                 synchronize_net();
4200                 ieee80211_flush_queues(local, sdata, false);
4201
4202                 /* restore the normal QoS parameters
4203                  * (unconditionally to avoid races)
4204                  */
4205                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
4206                 tx_tspec->downgraded = false;
4207                 ieee80211_sta_handle_tspec_ac_params(sdata);
4208
4209                 /* finally clear all the data */
4210                 memset(tx_tspec, 0, sizeof(*tx_tspec));
4211
4212                 return 0;
4213         }
4214
4215         return -ENOENT;
4216 }
4217
4218 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
4219                                    u8 inst_id,
4220                                    enum nl80211_nan_func_term_reason reason,
4221                                    gfp_t gfp)
4222 {
4223         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4224         struct cfg80211_nan_func *func;
4225         u64 cookie;
4226
4227         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
4228                 return;
4229
4230         spin_lock_bh(&sdata->u.nan.func_lock);
4231
4232         func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
4233         if (WARN_ON(!func)) {
4234                 spin_unlock_bh(&sdata->u.nan.func_lock);
4235                 return;
4236         }
4237
4238         cookie = func->cookie;
4239         idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
4240
4241         spin_unlock_bh(&sdata->u.nan.func_lock);
4242
4243         cfg80211_free_nan_func(func);
4244
4245         cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
4246                                      reason, cookie, gfp);
4247 }
4248 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
4249
4250 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
4251                               struct cfg80211_nan_match_params *match,
4252                               gfp_t gfp)
4253 {
4254         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4255         struct cfg80211_nan_func *func;
4256
4257         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
4258                 return;
4259
4260         spin_lock_bh(&sdata->u.nan.func_lock);
4261
4262         func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
4263         if (WARN_ON(!func)) {
4264                 spin_unlock_bh(&sdata->u.nan.func_lock);
4265                 return;
4266         }
4267         match->cookie = func->cookie;
4268
4269         spin_unlock_bh(&sdata->u.nan.func_lock);
4270
4271         cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
4272 }
4273 EXPORT_SYMBOL(ieee80211_nan_func_match);
4274
4275 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
4276                                               struct net_device *dev,
4277                                               const bool enabled)
4278 {
4279         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4280
4281         sdata->u.ap.multicast_to_unicast = enabled;
4282
4283         return 0;
4284 }
4285
4286 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
4287                               struct txq_info *txqi)
4288 {
4289         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) {
4290                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES);
4291                 txqstats->backlog_bytes = txqi->tin.backlog_bytes;
4292         }
4293
4294         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) {
4295                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS);
4296                 txqstats->backlog_packets = txqi->tin.backlog_packets;
4297         }
4298
4299         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) {
4300                 txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS);
4301                 txqstats->flows = txqi->tin.flows;
4302         }
4303
4304         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) {
4305                 txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS);
4306                 txqstats->drops = txqi->cstats.drop_count;
4307         }
4308
4309         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) {
4310                 txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS);
4311                 txqstats->ecn_marks = txqi->cstats.ecn_mark;
4312         }
4313
4314         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) {
4315                 txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT);
4316                 txqstats->overlimit = txqi->tin.overlimit;
4317         }
4318
4319         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) {
4320                 txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS);
4321                 txqstats->collisions = txqi->tin.collisions;
4322         }
4323
4324         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) {
4325                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES);
4326                 txqstats->tx_bytes = txqi->tin.tx_bytes;
4327         }
4328
4329         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) {
4330                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS);
4331                 txqstats->tx_packets = txqi->tin.tx_packets;
4332         }
4333 }
4334
4335 static int ieee80211_get_txq_stats(struct wiphy *wiphy,
4336                                    struct wireless_dev *wdev,
4337                                    struct cfg80211_txq_stats *txqstats)
4338 {
4339         struct ieee80211_local *local = wiphy_priv(wiphy);
4340         struct ieee80211_sub_if_data *sdata;
4341         int ret = 0;
4342
4343         spin_lock_bh(&local->fq.lock);
4344         rcu_read_lock();
4345
4346         if (wdev) {
4347                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4348                 if (!sdata->vif.txq) {
4349                         ret = 1;
4350                         goto out;
4351                 }
4352                 ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq));
4353         } else {
4354                 /* phy stats */
4355                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) |
4356                                     BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) |
4357                                     BIT(NL80211_TXQ_STATS_OVERLIMIT) |
4358                                     BIT(NL80211_TXQ_STATS_OVERMEMORY) |
4359                                     BIT(NL80211_TXQ_STATS_COLLISIONS) |
4360                                     BIT(NL80211_TXQ_STATS_MAX_FLOWS);
4361                 txqstats->backlog_packets = local->fq.backlog;
4362                 txqstats->backlog_bytes = local->fq.memory_usage;
4363                 txqstats->overlimit = local->fq.overlimit;
4364                 txqstats->overmemory = local->fq.overmemory;
4365                 txqstats->collisions = local->fq.collisions;
4366                 txqstats->max_flows = local->fq.flows_cnt;
4367         }
4368
4369 out:
4370         rcu_read_unlock();
4371         spin_unlock_bh(&local->fq.lock);
4372
4373         return ret;
4374 }
4375
4376 static int
4377 ieee80211_get_ftm_responder_stats(struct wiphy *wiphy,
4378                                   struct net_device *dev,
4379                                   struct cfg80211_ftm_responder_stats *ftm_stats)
4380 {
4381         struct ieee80211_local *local = wiphy_priv(wiphy);
4382         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4383
4384         return drv_get_ftm_responder_stats(local, sdata, ftm_stats);
4385 }
4386
4387 static int
4388 ieee80211_start_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
4389                      struct cfg80211_pmsr_request *request)
4390 {
4391         struct ieee80211_local *local = wiphy_priv(wiphy);
4392         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
4393
4394         return drv_start_pmsr(local, sdata, request);
4395 }
4396
4397 static void
4398 ieee80211_abort_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
4399                      struct cfg80211_pmsr_request *request)
4400 {
4401         struct ieee80211_local *local = wiphy_priv(wiphy);
4402         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
4403
4404         return drv_abort_pmsr(local, sdata, request);
4405 }
4406
4407 static int ieee80211_set_tid_config(struct wiphy *wiphy,
4408                                     struct net_device *dev,
4409                                     struct cfg80211_tid_config *tid_conf)
4410 {
4411         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4412         struct sta_info *sta;
4413         int ret;
4414
4415         if (!sdata->local->ops->set_tid_config)
4416                 return -EOPNOTSUPP;
4417
4418         if (!tid_conf->peer)
4419                 return drv_set_tid_config(sdata->local, sdata, NULL, tid_conf);
4420
4421         mutex_lock(&sdata->local->sta_mtx);
4422         sta = sta_info_get_bss(sdata, tid_conf->peer);
4423         if (!sta) {
4424                 mutex_unlock(&sdata->local->sta_mtx);
4425                 return -ENOENT;
4426         }
4427
4428         ret = drv_set_tid_config(sdata->local, sdata, &sta->sta, tid_conf);
4429         mutex_unlock(&sdata->local->sta_mtx);
4430
4431         return ret;
4432 }
4433
4434 static int ieee80211_reset_tid_config(struct wiphy *wiphy,
4435                                       struct net_device *dev,
4436                                       const u8 *peer, u8 tids)
4437 {
4438         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4439         struct sta_info *sta;
4440         int ret;
4441
4442         if (!sdata->local->ops->reset_tid_config)
4443                 return -EOPNOTSUPP;
4444
4445         if (!peer)
4446                 return drv_reset_tid_config(sdata->local, sdata, NULL, tids);
4447
4448         mutex_lock(&sdata->local->sta_mtx);
4449         sta = sta_info_get_bss(sdata, peer);
4450         if (!sta) {
4451                 mutex_unlock(&sdata->local->sta_mtx);
4452                 return -ENOENT;
4453         }
4454
4455         ret = drv_reset_tid_config(sdata->local, sdata, &sta->sta, tids);
4456         mutex_unlock(&sdata->local->sta_mtx);
4457
4458         return ret;
4459 }
4460
4461 static int ieee80211_set_sar_specs(struct wiphy *wiphy,
4462                                    struct cfg80211_sar_specs *sar)
4463 {
4464         struct ieee80211_local *local = wiphy_priv(wiphy);
4465
4466         if (!local->ops->set_sar_specs)
4467                 return -EOPNOTSUPP;
4468
4469         return local->ops->set_sar_specs(&local->hw, sar);
4470 }
4471
4472 static int
4473 ieee80211_set_after_color_change_beacon(struct ieee80211_sub_if_data *sdata,
4474                                         u32 *changed)
4475 {
4476         switch (sdata->vif.type) {
4477         case NL80211_IFTYPE_AP: {
4478                 int ret;
4479
4480                 if (!sdata->deflink.u.ap.next_beacon)
4481                         return -EINVAL;
4482
4483                 ret = ieee80211_assign_beacon(sdata, &sdata->deflink,
4484                                               sdata->deflink.u.ap.next_beacon,
4485                                               NULL, NULL);
4486                 ieee80211_free_next_beacon(&sdata->deflink);
4487
4488                 if (ret < 0)
4489                         return ret;
4490
4491                 *changed |= ret;
4492                 break;
4493         }
4494         default:
4495                 WARN_ON_ONCE(1);
4496                 return -EINVAL;
4497         }
4498
4499         return 0;
4500 }
4501
4502 static int
4503 ieee80211_set_color_change_beacon(struct ieee80211_sub_if_data *sdata,
4504                                   struct cfg80211_color_change_settings *params,
4505                                   u32 *changed)
4506 {
4507         struct ieee80211_color_change_settings color_change = {};
4508         int err;
4509
4510         switch (sdata->vif.type) {
4511         case NL80211_IFTYPE_AP:
4512                 sdata->deflink.u.ap.next_beacon =
4513                         cfg80211_beacon_dup(&params->beacon_next);
4514                 if (!sdata->deflink.u.ap.next_beacon)
4515                         return -ENOMEM;
4516
4517                 if (params->count <= 1)
4518                         break;
4519
4520                 color_change.counter_offset_beacon =
4521                         params->counter_offset_beacon;
4522                 color_change.counter_offset_presp =
4523                         params->counter_offset_presp;
4524                 color_change.count = params->count;
4525
4526                 err = ieee80211_assign_beacon(sdata, &sdata->deflink,
4527                                               &params->beacon_color_change,
4528                                               NULL, &color_change);
4529                 if (err < 0) {
4530                         ieee80211_free_next_beacon(&sdata->deflink);
4531                         return err;
4532                 }
4533                 *changed |= err;
4534                 break;
4535         default:
4536                 return -EOPNOTSUPP;
4537         }
4538
4539         return 0;
4540 }
4541
4542 static void
4543 ieee80211_color_change_bss_config_notify(struct ieee80211_sub_if_data *sdata,
4544                                          u8 color, int enable, u32 changed)
4545 {
4546         sdata->vif.bss_conf.he_bss_color.color = color;
4547         sdata->vif.bss_conf.he_bss_color.enabled = enable;
4548         changed |= BSS_CHANGED_HE_BSS_COLOR;
4549
4550         ieee80211_link_info_change_notify(sdata, &sdata->deflink, changed);
4551
4552         if (!sdata->vif.bss_conf.nontransmitted && sdata->vif.mbssid_tx_vif) {
4553                 struct ieee80211_sub_if_data *child;
4554
4555                 mutex_lock(&sdata->local->iflist_mtx);
4556                 list_for_each_entry(child, &sdata->local->interfaces, list) {
4557                         if (child != sdata && child->vif.mbssid_tx_vif == &sdata->vif) {
4558                                 child->vif.bss_conf.he_bss_color.color = color;
4559                                 child->vif.bss_conf.he_bss_color.enabled = enable;
4560                                 ieee80211_link_info_change_notify(child,
4561                                                                   &child->deflink,
4562                                                                   BSS_CHANGED_HE_BSS_COLOR);
4563                         }
4564                 }
4565                 mutex_unlock(&sdata->local->iflist_mtx);
4566         }
4567 }
4568
4569 static int ieee80211_color_change_finalize(struct ieee80211_sub_if_data *sdata)
4570 {
4571         struct ieee80211_local *local = sdata->local;
4572         u32 changed = 0;
4573         int err;
4574
4575         sdata_assert_lock(sdata);
4576         lockdep_assert_held(&local->mtx);
4577
4578         sdata->vif.bss_conf.color_change_active = false;
4579
4580         err = ieee80211_set_after_color_change_beacon(sdata, &changed);
4581         if (err) {
4582                 cfg80211_color_change_aborted_notify(sdata->dev);
4583                 return err;
4584         }
4585
4586         ieee80211_color_change_bss_config_notify(sdata,
4587                                                  sdata->vif.bss_conf.color_change_color,
4588                                                  1, changed);
4589         cfg80211_color_change_notify(sdata->dev);
4590
4591         return 0;
4592 }
4593
4594 void ieee80211_color_change_finalize_work(struct work_struct *work)
4595 {
4596         struct ieee80211_sub_if_data *sdata =
4597                 container_of(work, struct ieee80211_sub_if_data,
4598                              deflink.color_change_finalize_work);
4599         struct ieee80211_local *local = sdata->local;
4600
4601         sdata_lock(sdata);
4602         mutex_lock(&local->mtx);
4603
4604         /* AP might have been stopped while waiting for the lock. */
4605         if (!sdata->vif.bss_conf.color_change_active)
4606                 goto unlock;
4607
4608         if (!ieee80211_sdata_running(sdata))
4609                 goto unlock;
4610
4611         ieee80211_color_change_finalize(sdata);
4612
4613 unlock:
4614         mutex_unlock(&local->mtx);
4615         sdata_unlock(sdata);
4616 }
4617
4618 void ieee80211_color_change_finish(struct ieee80211_vif *vif)
4619 {
4620         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4621
4622         ieee80211_queue_work(&sdata->local->hw,
4623                              &sdata->deflink.color_change_finalize_work);
4624 }
4625 EXPORT_SYMBOL_GPL(ieee80211_color_change_finish);
4626
4627 void
4628 ieeee80211_obss_color_collision_notify(struct ieee80211_vif *vif,
4629                                        u64 color_bitmap, gfp_t gfp)
4630 {
4631         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4632
4633         if (sdata->vif.bss_conf.color_change_active || sdata->vif.bss_conf.csa_active)
4634                 return;
4635
4636         cfg80211_obss_color_collision_notify(sdata->dev, color_bitmap, gfp);
4637 }
4638 EXPORT_SYMBOL_GPL(ieeee80211_obss_color_collision_notify);
4639
4640 static int
4641 ieee80211_color_change(struct wiphy *wiphy, struct net_device *dev,
4642                        struct cfg80211_color_change_settings *params)
4643 {
4644         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4645         struct ieee80211_local *local = sdata->local;
4646         u32 changed = 0;
4647         int err;
4648
4649         sdata_assert_lock(sdata);
4650
4651         if (sdata->vif.bss_conf.nontransmitted)
4652                 return -EINVAL;
4653
4654         mutex_lock(&local->mtx);
4655
4656         /* don't allow another color change if one is already active or if csa
4657          * is active
4658          */
4659         if (sdata->vif.bss_conf.color_change_active || sdata->vif.bss_conf.csa_active) {
4660                 err = -EBUSY;
4661                 goto out;
4662         }
4663
4664         err = ieee80211_set_color_change_beacon(sdata, params, &changed);
4665         if (err)
4666                 goto out;
4667
4668         sdata->vif.bss_conf.color_change_active = true;
4669         sdata->vif.bss_conf.color_change_color = params->color;
4670
4671         cfg80211_color_change_started_notify(sdata->dev, params->count);
4672
4673         if (changed)
4674                 ieee80211_color_change_bss_config_notify(sdata, 0, 0, changed);
4675         else
4676                 /* if the beacon didn't change, we can finalize immediately */
4677                 ieee80211_color_change_finalize(sdata);
4678
4679 out:
4680         mutex_unlock(&local->mtx);
4681
4682         return err;
4683 }
4684
4685 static int
4686 ieee80211_set_radar_background(struct wiphy *wiphy,
4687                                struct cfg80211_chan_def *chandef)
4688 {
4689         struct ieee80211_local *local = wiphy_priv(wiphy);
4690
4691         if (!local->ops->set_radar_background)
4692                 return -EOPNOTSUPP;
4693
4694         return local->ops->set_radar_background(&local->hw, chandef);
4695 }
4696
4697 static int ieee80211_add_intf_link(struct wiphy *wiphy,
4698                                    struct wireless_dev *wdev,
4699                                    unsigned int link_id)
4700 {
4701         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4702
4703         if (wdev->use_4addr)
4704                 return -EOPNOTSUPP;
4705
4706         return ieee80211_vif_set_links(sdata, wdev->valid_links);
4707 }
4708
4709 static void ieee80211_del_intf_link(struct wiphy *wiphy,
4710                                     struct wireless_dev *wdev,
4711                                     unsigned int link_id)
4712 {
4713         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4714
4715         ieee80211_vif_set_links(sdata, wdev->valid_links);
4716 }
4717
4718 static int sta_add_link_station(struct ieee80211_local *local,
4719                                 struct ieee80211_sub_if_data *sdata,
4720                                 struct link_station_parameters *params)
4721 {
4722         struct sta_info *sta;
4723         int ret;
4724
4725         sta = sta_info_get_bss(sdata, params->mld_mac);
4726         if (!sta)
4727                 return -ENOENT;
4728
4729         if (!sta->sta.valid_links)
4730                 return -EINVAL;
4731
4732         if (sta->sta.valid_links & BIT(params->link_id))
4733                 return -EALREADY;
4734
4735         ret = ieee80211_sta_allocate_link(sta, params->link_id);
4736         if (ret)
4737                 return ret;
4738
4739         ret = sta_link_apply_parameters(local, sta, true, params);
4740         if (ret) {
4741                 ieee80211_sta_free_link(sta, params->link_id);
4742                 return ret;
4743         }
4744
4745         /* ieee80211_sta_activate_link frees the link upon failure */
4746         return ieee80211_sta_activate_link(sta, params->link_id);
4747 }
4748
4749 static int
4750 ieee80211_add_link_station(struct wiphy *wiphy, struct net_device *dev,
4751                            struct link_station_parameters *params)
4752 {
4753         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4754         struct ieee80211_local *local = wiphy_priv(wiphy);
4755         int ret;
4756
4757         mutex_lock(&sdata->local->sta_mtx);
4758         ret = sta_add_link_station(local, sdata, params);
4759         mutex_unlock(&sdata->local->sta_mtx);
4760
4761         return ret;
4762 }
4763
4764 static int sta_mod_link_station(struct ieee80211_local *local,
4765                                 struct ieee80211_sub_if_data *sdata,
4766                                 struct link_station_parameters *params)
4767 {
4768         struct sta_info *sta;
4769
4770         sta = sta_info_get_bss(sdata, params->mld_mac);
4771         if (!sta)
4772                 return -ENOENT;
4773
4774         if (!(sta->sta.valid_links & BIT(params->link_id)))
4775                 return -EINVAL;
4776
4777         return sta_link_apply_parameters(local, sta, false, params);
4778 }
4779
4780 static int
4781 ieee80211_mod_link_station(struct wiphy *wiphy, struct net_device *dev,
4782                            struct link_station_parameters *params)
4783 {
4784         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4785         struct ieee80211_local *local = wiphy_priv(wiphy);
4786         int ret;
4787
4788         mutex_lock(&sdata->local->sta_mtx);
4789         ret = sta_mod_link_station(local, sdata, params);
4790         mutex_unlock(&sdata->local->sta_mtx);
4791
4792         return ret;
4793 }
4794
4795 static int sta_del_link_station(struct ieee80211_sub_if_data *sdata,
4796                                 struct link_station_del_parameters *params)
4797 {
4798         struct sta_info *sta;
4799
4800         sta = sta_info_get_bss(sdata, params->mld_mac);
4801         if (!sta)
4802                 return -ENOENT;
4803
4804         if (!(sta->sta.valid_links & BIT(params->link_id)))
4805                 return -EINVAL;
4806
4807         /* must not create a STA without links */
4808         if (sta->sta.valid_links == BIT(params->link_id))
4809                 return -EINVAL;
4810
4811         ieee80211_sta_remove_link(sta, params->link_id);
4812
4813         return 0;
4814 }
4815
4816 static int
4817 ieee80211_del_link_station(struct wiphy *wiphy, struct net_device *dev,
4818                            struct link_station_del_parameters *params)
4819 {
4820         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4821         int ret;
4822
4823         mutex_lock(&sdata->local->sta_mtx);
4824         ret = sta_del_link_station(sdata, params);
4825         mutex_unlock(&sdata->local->sta_mtx);
4826
4827         return ret;
4828 }
4829
4830 const struct cfg80211_ops mac80211_config_ops = {
4831         .add_virtual_intf = ieee80211_add_iface,
4832         .del_virtual_intf = ieee80211_del_iface,
4833         .change_virtual_intf = ieee80211_change_iface,
4834         .start_p2p_device = ieee80211_start_p2p_device,
4835         .stop_p2p_device = ieee80211_stop_p2p_device,
4836         .add_key = ieee80211_add_key,
4837         .del_key = ieee80211_del_key,
4838         .get_key = ieee80211_get_key,
4839         .set_default_key = ieee80211_config_default_key,
4840         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
4841         .set_default_beacon_key = ieee80211_config_default_beacon_key,
4842         .start_ap = ieee80211_start_ap,
4843         .change_beacon = ieee80211_change_beacon,
4844         .stop_ap = ieee80211_stop_ap,
4845         .add_station = ieee80211_add_station,
4846         .del_station = ieee80211_del_station,
4847         .change_station = ieee80211_change_station,
4848         .get_station = ieee80211_get_station,
4849         .dump_station = ieee80211_dump_station,
4850         .dump_survey = ieee80211_dump_survey,
4851 #ifdef CONFIG_MAC80211_MESH
4852         .add_mpath = ieee80211_add_mpath,
4853         .del_mpath = ieee80211_del_mpath,
4854         .change_mpath = ieee80211_change_mpath,
4855         .get_mpath = ieee80211_get_mpath,
4856         .dump_mpath = ieee80211_dump_mpath,
4857         .get_mpp = ieee80211_get_mpp,
4858         .dump_mpp = ieee80211_dump_mpp,
4859         .update_mesh_config = ieee80211_update_mesh_config,
4860         .get_mesh_config = ieee80211_get_mesh_config,
4861         .join_mesh = ieee80211_join_mesh,
4862         .leave_mesh = ieee80211_leave_mesh,
4863 #endif
4864         .join_ocb = ieee80211_join_ocb,
4865         .leave_ocb = ieee80211_leave_ocb,
4866         .change_bss = ieee80211_change_bss,
4867         .set_txq_params = ieee80211_set_txq_params,
4868         .set_monitor_channel = ieee80211_set_monitor_channel,
4869         .suspend = ieee80211_suspend,
4870         .resume = ieee80211_resume,
4871         .scan = ieee80211_scan,
4872         .abort_scan = ieee80211_abort_scan,
4873         .sched_scan_start = ieee80211_sched_scan_start,
4874         .sched_scan_stop = ieee80211_sched_scan_stop,
4875         .auth = ieee80211_auth,
4876         .assoc = ieee80211_assoc,
4877         .deauth = ieee80211_deauth,
4878         .disassoc = ieee80211_disassoc,
4879         .join_ibss = ieee80211_join_ibss,
4880         .leave_ibss = ieee80211_leave_ibss,
4881         .set_mcast_rate = ieee80211_set_mcast_rate,
4882         .set_wiphy_params = ieee80211_set_wiphy_params,
4883         .set_tx_power = ieee80211_set_tx_power,
4884         .get_tx_power = ieee80211_get_tx_power,
4885         .rfkill_poll = ieee80211_rfkill_poll,
4886         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
4887         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
4888         .set_power_mgmt = ieee80211_set_power_mgmt,
4889         .set_bitrate_mask = ieee80211_set_bitrate_mask,
4890         .remain_on_channel = ieee80211_remain_on_channel,
4891         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
4892         .mgmt_tx = ieee80211_mgmt_tx,
4893         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
4894         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
4895         .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
4896         .update_mgmt_frame_registrations =
4897                 ieee80211_update_mgmt_frame_registrations,
4898         .set_antenna = ieee80211_set_antenna,
4899         .get_antenna = ieee80211_get_antenna,
4900         .set_rekey_data = ieee80211_set_rekey_data,
4901         .tdls_oper = ieee80211_tdls_oper,
4902         .tdls_mgmt = ieee80211_tdls_mgmt,
4903         .tdls_channel_switch = ieee80211_tdls_channel_switch,
4904         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
4905         .probe_client = ieee80211_probe_client,
4906         .set_noack_map = ieee80211_set_noack_map,
4907 #ifdef CONFIG_PM
4908         .set_wakeup = ieee80211_set_wakeup,
4909 #endif
4910         .get_channel = ieee80211_cfg_get_channel,
4911         .start_radar_detection = ieee80211_start_radar_detection,
4912         .end_cac = ieee80211_end_cac,
4913         .channel_switch = ieee80211_channel_switch,
4914         .set_qos_map = ieee80211_set_qos_map,
4915         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
4916         .add_tx_ts = ieee80211_add_tx_ts,
4917         .del_tx_ts = ieee80211_del_tx_ts,
4918         .start_nan = ieee80211_start_nan,
4919         .stop_nan = ieee80211_stop_nan,
4920         .nan_change_conf = ieee80211_nan_change_conf,
4921         .add_nan_func = ieee80211_add_nan_func,
4922         .del_nan_func = ieee80211_del_nan_func,
4923         .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
4924         .tx_control_port = ieee80211_tx_control_port,
4925         .get_txq_stats = ieee80211_get_txq_stats,
4926         .get_ftm_responder_stats = ieee80211_get_ftm_responder_stats,
4927         .start_pmsr = ieee80211_start_pmsr,
4928         .abort_pmsr = ieee80211_abort_pmsr,
4929         .probe_mesh_link = ieee80211_probe_mesh_link,
4930         .set_tid_config = ieee80211_set_tid_config,
4931         .reset_tid_config = ieee80211_reset_tid_config,
4932         .set_sar_specs = ieee80211_set_sar_specs,
4933         .color_change = ieee80211_color_change,
4934         .set_radar_background = ieee80211_set_radar_background,
4935         .add_intf_link = ieee80211_add_intf_link,
4936         .del_intf_link = ieee80211_del_intf_link,
4937         .add_link_station = ieee80211_add_link_station,
4938         .mod_link_station = ieee80211_mod_link_station,
4939         .del_link_station = ieee80211_del_link_station,
4940 };