net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <[email protected]>
   5  * Copyright 2013-2015  Intel Mobile Communications GmbH
   6  * Copyright (C) 2015-2017 Intel Deutschland GmbH
   7  * Copyright (C) 2018 Intel Corporation
   8  *
   9  * This file is GPLv2 as found in COPYING.
  10  */
  11
  12 #include <linux/ieee80211.h>
  13 #include <linux/nl80211.h>
  14 #include <linux/rtnetlink.h>
  15 #include <linux/slab.h>
  16 #include <net/net_namespace.h>
  17 #include <linux/rcupdate.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 void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata,
  27                                          struct vif_params *params)
  28 {
  29         bool mu_mimo_groups = false;
  30         bool mu_mimo_follow = false;
  31
  32         if (params->vht_mumimo_groups) {
  33                 u64 membership;
  34
  35                 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN);
  36
  37                 memcpy(sdata->vif.bss_conf.mu_group.membership,
  38                        params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
  39                 memcpy(sdata->vif.bss_conf.mu_group.position,
  40                        params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
  41                        WLAN_USER_POSITION_LEN);
  42                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MU_GROUPS);
  43                 /* don't care about endianness - just check for 0 */
  44                 memcpy(&membership, params->vht_mumimo_groups,
  45                        WLAN_MEMBERSHIP_LEN);
  46                 mu_mimo_groups = membership != 0;
  47         }
  48
  49         if (params->vht_mumimo_follow_addr) {
  50                 mu_mimo_follow =
  51                         is_valid_ether_addr(params->vht_mumimo_follow_addr);
  52                 ether_addr_copy(sdata->u.mntr.mu_follow_addr,
  53                                 params->vht_mumimo_follow_addr);
  54         }
  55
  56         sdata->vif.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow;
  57 }
  58
  59 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata,
  60                                      struct vif_params *params)
  61 {
  62         struct ieee80211_local *local = sdata->local;
  63         struct ieee80211_sub_if_data *monitor_sdata;
  64
  65         /* check flags first */
  66         if (params->flags && ieee80211_sdata_running(sdata)) {
  67                 u32 mask = MONITOR_FLAG_COOK_FRAMES | MONITOR_FLAG_ACTIVE;
  68
  69                 /*
  70                  * Prohibit MONITOR_FLAG_COOK_FRAMES and
  71                  * MONITOR_FLAG_ACTIVE to be changed while the
  72                  * interface is up.
  73                  * Else we would need to add a lot of cruft
  74                  * to update everything:
  75                  *      cooked_mntrs, monitor and all fif_* counters
  76                  *      reconfigure hardware
  77                  */
  78                 if ((params->flags & mask) != (sdata->u.mntr.flags & mask))
  79                         return -EBUSY;
  80         }
  81
  82         /* also validate MU-MIMO change */
  83         monitor_sdata = rtnl_dereference(local->monitor_sdata);
  84
  85         if (!monitor_sdata &&
  86             (params->vht_mumimo_groups || params->vht_mumimo_follow_addr))
  87                 return -EOPNOTSUPP;
  88
  89         /* apply all changes now - no failures allowed */
  90
  91         if (monitor_sdata)
  92                 ieee80211_set_mu_mimo_follow(monitor_sdata, params);
  93
  94         if (params->flags) {
  95                 if (ieee80211_sdata_running(sdata)) {
  96                         ieee80211_adjust_monitor_flags(sdata, -1);
  97                         sdata->u.mntr.flags = params->flags;
  98                         ieee80211_adjust_monitor_flags(sdata, 1);
  99
 100                         ieee80211_configure_filter(local);
 101                 } else {
 102                         /*
 103                          * Because the interface is down, ieee80211_do_stop
 104                          * and ieee80211_do_open take care of "everything"
 105                          * mentioned in the comment above.
 106                          */
 107                         sdata->u.mntr.flags = params->flags;
 108                 }
 109         }
 110
 111         return 0;
 112 }
 113
 114 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
 115                                                 const char *name,
 116                                                 unsigned char name_assign_type,
 117                                                 enum nl80211_iftype type,
 118                                                 struct vif_params *params)
 119 {
 120         struct ieee80211_local *local = wiphy_priv(wiphy);
 121         struct wireless_dev *wdev;
 122         struct ieee80211_sub_if_data *sdata;
 123         int err;
 124
 125         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
 126         if (err)
 127                 return ERR_PTR(err);
 128
 129         sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 130
 131         if (type == NL80211_IFTYPE_MONITOR) {
 132                 err = ieee80211_set_mon_options(sdata, params);
 133                 if (err) {
 134                         ieee80211_if_remove(sdata);
 135                         return NULL;
 136                 }
 137         }
 138
 139         return wdev;
 140 }
 141
 142 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
 143 {
 144         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
 145
 146         return 0;
 147 }
 148
 149 static int ieee80211_change_iface(struct wiphy *wiphy,
 150                                   struct net_device *dev,
 151                                   enum nl80211_iftype type,
 152                                   struct vif_params *params)
 153 {
 154         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 155         int ret;
 156
 157         ret = ieee80211_if_change_type(sdata, type);
 158         if (ret)
 159                 return ret;
 160
 161         if (type == NL80211_IFTYPE_AP_VLAN && params->use_4addr == 0) {
 162                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
 163                 ieee80211_check_fast_rx_iface(sdata);
 164         } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) {
 165                 sdata->u.mgd.use_4addr = params->use_4addr;
 166         }
 167
 168         if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
 169                 ret = ieee80211_set_mon_options(sdata, params);
 170                 if (ret)
 171                         return ret;
 172         }
 173
 174         return 0;
 175 }
 176
 177 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 178                                       struct wireless_dev *wdev)
 179 {
 180         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 181         int ret;
 182
 183         mutex_lock(&sdata->local->chanctx_mtx);
 184         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 185         mutex_unlock(&sdata->local->chanctx_mtx);
 186         if (ret < 0)
 187                 return ret;
 188
 189         return ieee80211_do_open(wdev, true);
 190 }
 191
 192 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 193                                       struct wireless_dev *wdev)
 194 {
 195         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 196 }
 197
 198 static int ieee80211_start_nan(struct wiphy *wiphy,
 199                                struct wireless_dev *wdev,
 200                                struct cfg80211_nan_conf *conf)
 201 {
 202         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 203         int ret;
 204
 205         mutex_lock(&sdata->local->chanctx_mtx);
 206         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 207         mutex_unlock(&sdata->local->chanctx_mtx);
 208         if (ret < 0)
 209                 return ret;
 210
 211         ret = ieee80211_do_open(wdev, true);
 212         if (ret)
 213                 return ret;
 214
 215         ret = drv_start_nan(sdata->local, sdata, conf);
 216         if (ret)
 217                 ieee80211_sdata_stop(sdata);
 218
 219         sdata->u.nan.conf = *conf;
 220
 221         return ret;
 222 }
 223
 224 static void ieee80211_stop_nan(struct wiphy *wiphy,
 225                                struct wireless_dev *wdev)
 226 {
 227         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 228
 229         drv_stop_nan(sdata->local, sdata);
 230         ieee80211_sdata_stop(sdata);
 231 }
 232
 233 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
 234                                      struct wireless_dev *wdev,
 235                                      struct cfg80211_nan_conf *conf,
 236                                      u32 changes)
 237 {
 238         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 239         struct cfg80211_nan_conf new_conf;
 240         int ret = 0;
 241
 242         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 243                 return -EOPNOTSUPP;
 244
 245         if (!ieee80211_sdata_running(sdata))
 246                 return -ENETDOWN;
 247
 248         new_conf = sdata->u.nan.conf;
 249
 250         if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
 251                 new_conf.master_pref = conf->master_pref;
 252
 253         if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
 254                 new_conf.bands = conf->bands;
 255
 256         ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
 257         if (!ret)
 258                 sdata->u.nan.conf = new_conf;
 259
 260         return ret;
 261 }
 262
 263 static int ieee80211_add_nan_func(struct wiphy *wiphy,
 264                                   struct wireless_dev *wdev,
 265                                   struct cfg80211_nan_func *nan_func)
 266 {
 267         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 268         int ret;
 269
 270         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 271                 return -EOPNOTSUPP;
 272
 273         if (!ieee80211_sdata_running(sdata))
 274                 return -ENETDOWN;
 275
 276         spin_lock_bh(&sdata->u.nan.func_lock);
 277
 278         ret = idr_alloc(&sdata->u.nan.function_inst_ids,
 279                         nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
 280                         GFP_ATOMIC);
 281         spin_unlock_bh(&sdata->u.nan.func_lock);
 282
 283         if (ret < 0)
 284                 return ret;
 285
 286         nan_func->instance_id = ret;
 287
 288         WARN_ON(nan_func->instance_id == 0);
 289
 290         ret = drv_add_nan_func(sdata->local, sdata, nan_func);
 291         if (ret) {
 292                 spin_lock_bh(&sdata->u.nan.func_lock);
 293                 idr_remove(&sdata->u.nan.function_inst_ids,
 294                            nan_func->instance_id);
 295                 spin_unlock_bh(&sdata->u.nan.func_lock);
 296         }
 297
 298         return ret;
 299 }
 300
 301 static struct cfg80211_nan_func *
 302 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
 303                                   u64 cookie)
 304 {
 305         struct cfg80211_nan_func *func;
 306         int id;
 307
 308         lockdep_assert_held(&sdata->u.nan.func_lock);
 309
 310         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
 311                 if (func->cookie == cookie)
 312                         return func;
 313         }
 314
 315         return NULL;
 316 }
 317
 318 static void ieee80211_del_nan_func(struct wiphy *wiphy,
 319                                   struct wireless_dev *wdev, u64 cookie)
 320 {
 321         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 322         struct cfg80211_nan_func *func;
 323         u8 instance_id = 0;
 324
 325         if (sdata->vif.type != NL80211_IFTYPE_NAN ||
 326             !ieee80211_sdata_running(sdata))
 327                 return;
 328
 329         spin_lock_bh(&sdata->u.nan.func_lock);
 330
 331         func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
 332         if (func)
 333                 instance_id = func->instance_id;
 334
 335         spin_unlock_bh(&sdata->u.nan.func_lock);
 336
 337         if (instance_id)
 338                 drv_del_nan_func(sdata->local, sdata, instance_id);
 339 }
 340
 341 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 342                                   struct net_device *dev,
 343                                   u16 noack_map)
 344 {
 345         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 346
 347         sdata->noack_map = noack_map;
 348
 349         ieee80211_check_fast_xmit_iface(sdata);
 350
 351         return 0;
 352 }
 353
 354 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 355                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 356                              struct key_params *params)
 357 {
 358         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 359         struct ieee80211_local *local = sdata->local;
 360         struct sta_info *sta = NULL;
 361         const struct ieee80211_cipher_scheme *cs = NULL;
 362         struct ieee80211_key *key;
 363         int err;
 364
 365         if (!ieee80211_sdata_running(sdata))
 366                 return -ENETDOWN;
 367
 368         /* reject WEP and TKIP keys if WEP failed to initialize */
 369         switch (params->cipher) {
 370         case WLAN_CIPHER_SUITE_WEP40:
 371         case WLAN_CIPHER_SUITE_TKIP:
 372         case WLAN_CIPHER_SUITE_WEP104:
 373                 if (IS_ERR(local->wep_tx_tfm))
 374                         return -EINVAL;
 375                 break;
 376         case WLAN_CIPHER_SUITE_CCMP:
 377         case WLAN_CIPHER_SUITE_CCMP_256:
 378         case WLAN_CIPHER_SUITE_AES_CMAC:
 379         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 380         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 381         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 382         case WLAN_CIPHER_SUITE_GCMP:
 383         case WLAN_CIPHER_SUITE_GCMP_256:
 384                 break;
 385         default:
 386                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 387                 break;
 388         }
 389
 390         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 391                                   params->key, params->seq_len, params->seq,
 392                                   cs);
 393         if (IS_ERR(key))
 394                 return PTR_ERR(key);
 395
 396         if (pairwise)
 397                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 398
 399         mutex_lock(&local->sta_mtx);
 400
 401         if (mac_addr) {
 402                 sta = sta_info_get_bss(sdata, mac_addr);
 403                 /*
 404                  * The ASSOC test makes sure the driver is ready to
 405                  * receive the key. When wpa_supplicant has roamed
 406                  * using FT, it attempts to set the key before
 407                  * association has completed, this rejects that attempt
 408                  * so it will set the key again after association.
 409                  *
 410                  * TODO: accept the key if we have a station entry and
 411                  *       add it to the device after the station.
 412                  */
 413                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 414                         ieee80211_key_free_unused(key);
 415                         err = -ENOENT;
 416                         goto out_unlock;
 417                 }
 418         }
 419
 420         switch (sdata->vif.type) {
 421         case NL80211_IFTYPE_STATION:
 422                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 423                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 424                 break;
 425         case NL80211_IFTYPE_AP:
 426         case NL80211_IFTYPE_AP_VLAN:
 427                 /* Keys without a station are used for TX only */
 428                 if (sta && test_sta_flag(sta, WLAN_STA_MFP))
 429                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 430                 break;
 431         case NL80211_IFTYPE_ADHOC:
 432                 /* no MFP (yet) */
 433                 break;
 434         case NL80211_IFTYPE_MESH_POINT:
 435 #ifdef CONFIG_MAC80211_MESH
 436                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 437                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 438                 break;
 439 #endif
 440         case NL80211_IFTYPE_WDS:
 441         case NL80211_IFTYPE_MONITOR:
 442         case NL80211_IFTYPE_P2P_DEVICE:
 443         case NL80211_IFTYPE_NAN:
 444         case NL80211_IFTYPE_UNSPECIFIED:
 445         case NUM_NL80211_IFTYPES:
 446         case NL80211_IFTYPE_P2P_CLIENT:
 447         case NL80211_IFTYPE_P2P_GO:
 448         case NL80211_IFTYPE_OCB:
 449                 /* shouldn't happen */
 450                 WARN_ON_ONCE(1);
 451                 break;
 452         }
 453
 454         if (sta)
 455                 sta->cipher_scheme = cs;
 456
 457         err = ieee80211_key_link(key, sdata, sta);
 458
 459  out_unlock:
 460         mutex_unlock(&local->sta_mtx);
 461
 462         return err;
 463 }
 464
 465 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 466                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 467 {
 468         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 469         struct ieee80211_local *local = sdata->local;
 470         struct sta_info *sta;
 471         struct ieee80211_key *key = NULL;
 472         int ret;
 473
 474         mutex_lock(&local->sta_mtx);
 475         mutex_lock(&local->key_mtx);
 476
 477         if (mac_addr) {
 478                 ret = -ENOENT;
 479
 480                 sta = sta_info_get_bss(sdata, mac_addr);
 481                 if (!sta)
 482                         goto out_unlock;
 483
 484                 if (pairwise)
 485                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 486                 else
 487                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 488         } else
 489                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 490
 491         if (!key) {
 492                 ret = -ENOENT;
 493                 goto out_unlock;
 494         }
 495
 496         ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION);
 497
 498         ret = 0;
 499  out_unlock:
 500         mutex_unlock(&local->key_mtx);
 501         mutex_unlock(&local->sta_mtx);
 502
 503         return ret;
 504 }
 505
 506 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 507                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 508                              void *cookie,
 509                              void (*callback)(void *cookie,
 510                                               struct key_params *params))
 511 {
 512         struct ieee80211_sub_if_data *sdata;
 513         struct sta_info *sta = NULL;
 514         u8 seq[6] = {0};
 515         struct key_params params;
 516         struct ieee80211_key *key = NULL;
 517         u64 pn64;
 518         u32 iv32;
 519         u16 iv16;
 520         int err = -ENOENT;
 521         struct ieee80211_key_seq kseq = {};
 522
 523         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 524
 525         rcu_read_lock();
 526
 527         if (mac_addr) {
 528                 sta = sta_info_get_bss(sdata, mac_addr);
 529                 if (!sta)
 530                         goto out;
 531
 532                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 533                         key = rcu_dereference(sta->ptk[key_idx]);
 534                 else if (!pairwise &&
 535                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 536                         key = rcu_dereference(sta->gtk[key_idx]);
 537         } else
 538                 key = rcu_dereference(sdata->keys[key_idx]);
 539
 540         if (!key)
 541                 goto out;
 542
 543         memset(&params, 0, sizeof(params));
 544
 545         params.cipher = key->conf.cipher;
 546
 547         switch (key->conf.cipher) {
 548         case WLAN_CIPHER_SUITE_TKIP:
 549                 pn64 = atomic64_read(&key->conf.tx_pn);
 550                 iv32 = TKIP_PN_TO_IV32(pn64);
 551                 iv16 = TKIP_PN_TO_IV16(pn64);
 552
 553                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 554                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 555                         drv_get_key_seq(sdata->local, key, &kseq);
 556                         iv32 = kseq.tkip.iv32;
 557                         iv16 = kseq.tkip.iv16;
 558                 }
 559
 560                 seq[0] = iv16 & 0xff;
 561                 seq[1] = (iv16 >> 8) & 0xff;
 562                 seq[2] = iv32 & 0xff;
 563                 seq[3] = (iv32 >> 8) & 0xff;
 564                 seq[4] = (iv32 >> 16) & 0xff;
 565                 seq[5] = (iv32 >> 24) & 0xff;
 566                 params.seq = seq;
 567                 params.seq_len = 6;
 568                 break;
 569         case WLAN_CIPHER_SUITE_CCMP:
 570         case WLAN_CIPHER_SUITE_CCMP_256:
 571         case WLAN_CIPHER_SUITE_AES_CMAC:
 572         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 573                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 574                              offsetof(typeof(kseq), aes_cmac));
 575                 /* fall through */
 576         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 577         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 578                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 579                              offsetof(typeof(kseq), aes_gmac));
 580                 /* fall through */
 581         case WLAN_CIPHER_SUITE_GCMP:
 582         case WLAN_CIPHER_SUITE_GCMP_256:
 583                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 584                              offsetof(typeof(kseq), gcmp));
 585
 586                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 587                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 588                         drv_get_key_seq(sdata->local, key, &kseq);
 589                         memcpy(seq, kseq.ccmp.pn, 6);
 590                 } else {
 591                         pn64 = atomic64_read(&key->conf.tx_pn);
 592                         seq[0] = pn64;
 593                         seq[1] = pn64 >> 8;
 594                         seq[2] = pn64 >> 16;
 595                         seq[3] = pn64 >> 24;
 596                         seq[4] = pn64 >> 32;
 597                         seq[5] = pn64 >> 40;
 598                 }
 599                 params.seq = seq;
 600                 params.seq_len = 6;
 601                 break;
 602         default:
 603                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 604                         break;
 605                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 606                         break;
 607                 drv_get_key_seq(sdata->local, key, &kseq);
 608                 params.seq = kseq.hw.seq;
 609                 params.seq_len = kseq.hw.seq_len;
 610                 break;
 611         }
 612
 613         params.key = key->conf.key;
 614         params.key_len = key->conf.keylen;
 615
 616         callback(cookie, &params);
 617         err = 0;
 618
 619  out:
 620         rcu_read_unlock();
 621         return err;
 622 }
 623
 624 static int ieee80211_config_default_key(struct wiphy *wiphy,
 625                                         struct net_device *dev,
 626                                         u8 key_idx, bool uni,
 627                                         bool multi)
 628 {
 629         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 630
 631         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 632
 633         return 0;
 634 }
 635
 636 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 637                                              struct net_device *dev,
 638                                              u8 key_idx)
 639 {
 640         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 641
 642         ieee80211_set_default_mgmt_key(sdata, key_idx);
 643
 644         return 0;
 645 }
 646
 647 void sta_set_rate_info_tx(struct sta_info *sta,
 648                           const struct ieee80211_tx_rate *rate,
 649                           struct rate_info *rinfo)
 650 {
 651         rinfo->flags = 0;
 652         if (rate->flags & IEEE80211_TX_RC_MCS) {
 653                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 654                 rinfo->mcs = rate->idx;
 655         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 656                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 657                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 658                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 659         } else {
 660                 struct ieee80211_supported_band *sband;
 661                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 662                 u16 brate;
 663
 664                 sband = ieee80211_get_sband(sta->sdata);
 665                 if (sband) {
 666                         brate = sband->bitrates[rate->idx].bitrate;
 667                         rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 668                 }
 669         }
 670         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 671                 rinfo->bw = RATE_INFO_BW_40;
 672         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 673                 rinfo->bw = RATE_INFO_BW_80;
 674         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 675                 rinfo->bw = RATE_INFO_BW_160;
 676         else
 677                 rinfo->bw = RATE_INFO_BW_20;
 678         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 679                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 680 }
 681
 682 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 683                                   int idx, u8 *mac, struct station_info *sinfo)
 684 {
 685         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 686         struct ieee80211_local *local = sdata->local;
 687         struct sta_info *sta;
 688         int ret = -ENOENT;
 689
 690         mutex_lock(&local->sta_mtx);
 691
 692         sta = sta_info_get_by_idx(sdata, idx);
 693         if (sta) {
 694                 ret = 0;
 695                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 696                 sta_set_sinfo(sta, sinfo, true);
 697         }
 698
 699         mutex_unlock(&local->sta_mtx);
 700
 701         return ret;
 702 }
 703
 704 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 705                                  int idx, struct survey_info *survey)
 706 {
 707         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 708
 709         return drv_get_survey(local, idx, survey);
 710 }
 711
 712 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 713                                  const u8 *mac, struct station_info *sinfo)
 714 {
 715         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 716         struct ieee80211_local *local = sdata->local;
 717         struct sta_info *sta;
 718         int ret = -ENOENT;
 719
 720         mutex_lock(&local->sta_mtx);
 721
 722         sta = sta_info_get_bss(sdata, mac);
 723         if (sta) {
 724                 ret = 0;
 725                 sta_set_sinfo(sta, sinfo, true);
 726         }
 727
 728         mutex_unlock(&local->sta_mtx);
 729
 730         return ret;
 731 }
 732
 733 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 734                                          struct cfg80211_chan_def *chandef)
 735 {
 736         struct ieee80211_local *local = wiphy_priv(wiphy);
 737         struct ieee80211_sub_if_data *sdata;
 738         int ret = 0;
 739
 740         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 741                 return 0;
 742
 743         mutex_lock(&local->mtx);
 744         if (local->use_chanctx) {
 745                 sdata = rtnl_dereference(local->monitor_sdata);
 746                 if (sdata) {
 747                         ieee80211_vif_release_channel(sdata);
 748                         ret = ieee80211_vif_use_channel(sdata, chandef,
 749                                         IEEE80211_CHANCTX_EXCLUSIVE);
 750                 }
 751         } else if (local->open_count == local->monitors) {
 752                 local->_oper_chandef = *chandef;
 753                 ieee80211_hw_config(local, 0);
 754         }
 755
 756         if (ret == 0)
 757                 local->monitor_chandef = *chandef;
 758         mutex_unlock(&local->mtx);
 759
 760         return ret;
 761 }
 762
 763 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 764                                     const u8 *resp, size_t resp_len,
 765                                     const struct ieee80211_csa_settings *csa)
 766 {
 767         struct probe_resp *new, *old;
 768
 769         if (!resp || !resp_len)
 770                 return 1;
 771
 772         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 773
 774         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 775         if (!new)
 776                 return -ENOMEM;
 777
 778         new->len = resp_len;
 779         memcpy(new->data, resp, resp_len);
 780
 781         if (csa)
 782                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 783                        csa->n_counter_offsets_presp *
 784                        sizeof(new->csa_counter_offsets[0]));
 785
 786         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 787         if (old)
 788                 kfree_rcu(old, rcu_head);
 789
 790         return 0;
 791 }
 792
 793 static int ieee80211_set_ftm_responder_params(
 794                                 struct ieee80211_sub_if_data *sdata,
 795                                 const u8 *lci, size_t lci_len,
 796                                 const u8 *civicloc, size_t civicloc_len)
 797 {
 798         struct ieee80211_ftm_responder_params *new, *old;
 799         struct ieee80211_bss_conf *bss_conf;
 800         u8 *pos;
 801         int len;
 802
 803         if ((!lci || !lci_len) && (!civicloc || !civicloc_len))
 804                 return 1;
 805
 806         bss_conf = &sdata->vif.bss_conf;
 807         old = bss_conf->ftmr_params;
 808         len = lci_len + civicloc_len;
 809
 810         new = kzalloc(sizeof(*new) + len, GFP_KERNEL);
 811         if (!new)
 812                 return -ENOMEM;
 813
 814         pos = (u8 *)(new + 1);
 815         if (lci_len) {
 816                 new->lci_len = lci_len;
 817                 new->lci = pos;
 818                 memcpy(pos, lci, lci_len);
 819                 pos += lci_len;
 820         }
 821
 822         if (civicloc_len) {
 823                 new->civicloc_len = civicloc_len;
 824                 new->civicloc = pos;
 825                 memcpy(pos, civicloc, civicloc_len);
 826                 pos += civicloc_len;
 827         }
 828
 829         bss_conf->ftmr_params = new;
 830         kfree(old);
 831
 832         return 0;
 833 }
 834
 835 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 836                                    struct cfg80211_beacon_data *params,
 837                                    const struct ieee80211_csa_settings *csa)
 838 {
 839         struct beacon_data *new, *old;
 840         int new_head_len, new_tail_len;
 841         int size, err;
 842         u32 changed = BSS_CHANGED_BEACON;
 843
 844         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 845
 846
 847         /* Need to have a beacon head if we don't have one yet */
 848         if (!params->head && !old)
 849                 return -EINVAL;
 850
 851         /* new or old head? */
 852         if (params->head)
 853                 new_head_len = params->head_len;
 854         else
 855                 new_head_len = old->head_len;
 856
 857         /* new or old tail? */
 858         if (params->tail || !old)
 859                 /* params->tail_len will be zero for !params->tail */
 860                 new_tail_len = params->tail_len;
 861         else
 862                 new_tail_len = old->tail_len;
 863
 864         size = sizeof(*new) + new_head_len + new_tail_len;
 865
 866         new = kzalloc(size, GFP_KERNEL);
 867         if (!new)
 868                 return -ENOMEM;
 869
 870         /* start filling the new info now */
 871
 872         /*
 873          * pointers go into the block we allocated,
 874          * memory is | beacon_data | head | tail |
 875          */
 876         new->head = ((u8 *) new) + sizeof(*new);
 877         new->tail = new->head + new_head_len;
 878         new->head_len = new_head_len;
 879         new->tail_len = new_tail_len;
 880
 881         if (csa) {
 882                 new->csa_current_counter = csa->count;
 883                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 884                        csa->n_counter_offsets_beacon *
 885                        sizeof(new->csa_counter_offsets[0]));
 886         }
 887
 888         /* copy in head */
 889         if (params->head)
 890                 memcpy(new->head, params->head, new_head_len);
 891         else
 892                 memcpy(new->head, old->head, new_head_len);
 893
 894         /* copy in optional tail */
 895         if (params->tail)
 896                 memcpy(new->tail, params->tail, new_tail_len);
 897         else
 898                 if (old)
 899                         memcpy(new->tail, old->tail, new_tail_len);
 900
 901         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 902                                        params->probe_resp_len, csa);
 903         if (err < 0)
 904                 return err;
 905         if (err == 0)
 906                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 907
 908         if (params->ftm_responder != -1) {
 909                 sdata->vif.bss_conf.ftm_responder = params->ftm_responder;
 910                 err = ieee80211_set_ftm_responder_params(sdata,
 911                                                          params->lci,
 912                                                          params->lci_len,
 913                                                          params->civicloc,
 914                                                          params->civicloc_len);
 915
 916                 if (err < 0)
 917                         return err;
 918
 919                 changed |= BSS_CHANGED_FTM_RESPONDER;
 920         }
 921
 922         rcu_assign_pointer(sdata->u.ap.beacon, new);
 923
 924         if (old)
 925                 kfree_rcu(old, rcu_head);
 926
 927         return changed;
 928 }
 929
 930 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 931                               struct cfg80211_ap_settings *params)
 932 {
 933         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 934         struct ieee80211_local *local = sdata->local;
 935         struct beacon_data *old;
 936         struct ieee80211_sub_if_data *vlan;
 937         u32 changed = BSS_CHANGED_BEACON_INT |
 938                       BSS_CHANGED_BEACON_ENABLED |
 939                       BSS_CHANGED_BEACON |
 940                       BSS_CHANGED_SSID |
 941                       BSS_CHANGED_P2P_PS |
 942                       BSS_CHANGED_TXPOWER;
 943         int err;
 944
 945         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 946         if (old)
 947                 return -EALREADY;
 948
 949         switch (params->smps_mode) {
 950         case NL80211_SMPS_OFF:
 951                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 952                 break;
 953         case NL80211_SMPS_STATIC:
 954                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 955                 break;
 956         case NL80211_SMPS_DYNAMIC:
 957                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 958                 break;
 959         default:
 960                 return -EINVAL;
 961         }
 962         sdata->u.ap.req_smps = sdata->smps_mode;
 963
 964         sdata->needed_rx_chains = sdata->local->rx_chains;
 965
 966         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 967
 968         if (params->he_cap)
 969                 sdata->vif.bss_conf.he_support = true;
 970
 971         mutex_lock(&local->mtx);
 972         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 973                                         IEEE80211_CHANCTX_SHARED);
 974         if (!err)
 975                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 976         mutex_unlock(&local->mtx);
 977         if (err)
 978                 return err;
 979
 980         /*
 981          * Apply control port protocol, this allows us to
 982          * not encrypt dynamic WEP control frames.
 983          */
 984         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 985         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 986         sdata->control_port_over_nl80211 =
 987                                 params->crypto.control_port_over_nl80211;
 988         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 989                                                         &params->crypto,
 990                                                         sdata->vif.type);
 991
 992         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 993                 vlan->control_port_protocol =
 994                         params->crypto.control_port_ethertype;
 995                 vlan->control_port_no_encrypt =
 996                         params->crypto.control_port_no_encrypt;
 997                 vlan->control_port_over_nl80211 =
 998                         params->crypto.control_port_over_nl80211;
 999                 vlan->encrypt_headroom =
1000                         ieee80211_cs_headroom(sdata->local,
1001                                               &params->crypto,
1002                                               vlan->vif.type);
1003         }
1004
1005         sdata->vif.bss_conf.dtim_period = params->dtim_period;
1006         sdata->vif.bss_conf.enable_beacon = true;
1007         sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
1008
1009         sdata->vif.bss_conf.ssid_len = params->ssid_len;
1010         if (params->ssid_len)
1011                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
1012                        params->ssid_len);
1013         sdata->vif.bss_conf.hidden_ssid =
1014                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1015
1016         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1017                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
1018         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
1019                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1020         if (params->p2p_opp_ps)
1021                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1022                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1023
1024         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
1025         if (err < 0) {
1026                 ieee80211_vif_release_channel(sdata);
1027                 return err;
1028         }
1029         changed |= err;
1030
1031         err = drv_start_ap(sdata->local, sdata);
1032         if (err) {
1033                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1034
1035                 if (old)
1036                         kfree_rcu(old, rcu_head);
1037                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1038                 ieee80211_vif_release_channel(sdata);
1039                 return err;
1040         }
1041
1042         ieee80211_recalc_dtim(local, sdata);
1043         ieee80211_bss_info_change_notify(sdata, changed);
1044
1045         netif_carrier_on(dev);
1046         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1047                 netif_carrier_on(vlan->dev);
1048
1049         return 0;
1050 }
1051
1052 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1053                                    struct cfg80211_beacon_data *params)
1054 {
1055         struct ieee80211_sub_if_data *sdata;
1056         struct beacon_data *old;
1057         int err;
1058
1059         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1060         sdata_assert_lock(sdata);
1061
1062         /* don't allow changing the beacon while CSA is in place - offset
1063          * of channel switch counter may change
1064          */
1065         if (sdata->vif.csa_active)
1066                 return -EBUSY;
1067
1068         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1069         if (!old)
1070                 return -ENOENT;
1071
1072         err = ieee80211_assign_beacon(sdata, params, NULL);
1073         if (err < 0)
1074                 return err;
1075         ieee80211_bss_info_change_notify(sdata, err);
1076         return 0;
1077 }
1078
1079 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1080 {
1081         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1082         struct ieee80211_sub_if_data *vlan;
1083         struct ieee80211_local *local = sdata->local;
1084         struct beacon_data *old_beacon;
1085         struct probe_resp *old_probe_resp;
1086         struct cfg80211_chan_def chandef;
1087
1088         sdata_assert_lock(sdata);
1089
1090         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1091         if (!old_beacon)
1092                 return -ENOENT;
1093         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1094
1095         /* abort any running channel switch */
1096         mutex_lock(&local->mtx);
1097         sdata->vif.csa_active = false;
1098         if (sdata->csa_block_tx) {
1099                 ieee80211_wake_vif_queues(local, sdata,
1100                                           IEEE80211_QUEUE_STOP_REASON_CSA);
1101                 sdata->csa_block_tx = false;
1102         }
1103
1104         mutex_unlock(&local->mtx);
1105
1106         kfree(sdata->u.ap.next_beacon);
1107         sdata->u.ap.next_beacon = NULL;
1108
1109         /* turn off carrier for this interface and dependent VLANs */
1110         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1111                 netif_carrier_off(vlan->dev);
1112         netif_carrier_off(dev);
1113
1114         /* remove beacon and probe response */
1115         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1116         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1117         kfree_rcu(old_beacon, rcu_head);
1118         if (old_probe_resp)
1119                 kfree_rcu(old_probe_resp, rcu_head);
1120         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1121
1122         kfree(sdata->vif.bss_conf.ftmr_params);
1123         sdata->vif.bss_conf.ftmr_params = NULL;
1124
1125         __sta_info_flush(sdata, true);
1126         ieee80211_free_keys(sdata, true);
1127
1128         sdata->vif.bss_conf.enable_beacon = false;
1129         sdata->vif.bss_conf.ssid_len = 0;
1130         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1131         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1132
1133         if (sdata->wdev.cac_started) {
1134                 chandef = sdata->vif.bss_conf.chandef;
1135                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1136                 cfg80211_cac_event(sdata->dev, &chandef,
1137                                    NL80211_RADAR_CAC_ABORTED,
1138                                    GFP_KERNEL);
1139         }
1140
1141         drv_stop_ap(sdata->local, sdata);
1142
1143         /* free all potentially still buffered bcast frames */
1144         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1145         ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1146
1147         mutex_lock(&local->mtx);
1148         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1149         ieee80211_vif_release_channel(sdata);
1150         mutex_unlock(&local->mtx);
1151
1152         return 0;
1153 }
1154
1155 static int sta_apply_auth_flags(struct ieee80211_local *local,
1156                                 struct sta_info *sta,
1157                                 u32 mask, u32 set)
1158 {
1159         int ret;
1160
1161         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1162             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1163             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1164                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1165                 if (ret)
1166                         return ret;
1167         }
1168
1169         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1170             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1171             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1172                 /*
1173                  * When peer becomes associated, init rate control as
1174                  * well. Some drivers require rate control initialized
1175                  * before drv_sta_state() is called.
1176                  */
1177                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1178                         rate_control_rate_init(sta);
1179
1180                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1181                 if (ret)
1182                         return ret;
1183         }
1184
1185         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1186                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1187                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1188                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1189                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1190                 else
1191                         ret = 0;
1192                 if (ret)
1193                         return ret;
1194         }
1195
1196         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1197             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1198             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1199                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1200                 if (ret)
1201                         return ret;
1202         }
1203
1204         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1205             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1206             test_sta_flag(sta, WLAN_STA_AUTH)) {
1207                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1208                 if (ret)
1209                         return ret;
1210         }
1211
1212         return 0;
1213 }
1214
1215 static void sta_apply_mesh_params(struct ieee80211_local *local,
1216                                   struct sta_info *sta,
1217                                   struct station_parameters *params)
1218 {
1219 #ifdef CONFIG_MAC80211_MESH
1220         struct ieee80211_sub_if_data *sdata = sta->sdata;
1221         u32 changed = 0;
1222
1223         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1224                 switch (params->plink_state) {
1225                 case NL80211_PLINK_ESTAB:
1226                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1227                                 changed = mesh_plink_inc_estab_count(sdata);
1228                         sta->mesh->plink_state = params->plink_state;
1229                         sta->mesh->aid = params->peer_aid;
1230
1231                         ieee80211_mps_sta_status_update(sta);
1232                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1233                                       sdata->u.mesh.mshcfg.power_mode);
1234                         break;
1235                 case NL80211_PLINK_LISTEN:
1236                 case NL80211_PLINK_BLOCKED:
1237                 case NL80211_PLINK_OPN_SNT:
1238                 case NL80211_PLINK_OPN_RCVD:
1239                 case NL80211_PLINK_CNF_RCVD:
1240                 case NL80211_PLINK_HOLDING:
1241                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1242                                 changed = mesh_plink_dec_estab_count(sdata);
1243                         sta->mesh->plink_state = params->plink_state;
1244
1245                         ieee80211_mps_sta_status_update(sta);
1246                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1247                                         NL80211_MESH_POWER_UNKNOWN);
1248                         break;
1249                 default:
1250                         /*  nothing  */
1251                         break;
1252                 }
1253         }
1254
1255         switch (params->plink_action) {
1256         case NL80211_PLINK_ACTION_NO_ACTION:
1257                 /* nothing */
1258                 break;
1259         case NL80211_PLINK_ACTION_OPEN:
1260                 changed |= mesh_plink_open(sta);
1261                 break;
1262         case NL80211_PLINK_ACTION_BLOCK:
1263                 changed |= mesh_plink_block(sta);
1264                 break;
1265         }
1266
1267         if (params->local_pm)
1268                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1269                                                           params->local_pm);
1270
1271         ieee80211_mbss_info_change_notify(sdata, changed);
1272 #endif
1273 }
1274
1275 static int sta_apply_parameters(struct ieee80211_local *local,
1276                                 struct sta_info *sta,
1277                                 struct station_parameters *params)
1278 {
1279         int ret = 0;
1280         struct ieee80211_supported_band *sband;
1281         struct ieee80211_sub_if_data *sdata = sta->sdata;
1282         u32 mask, set;
1283
1284         sband = ieee80211_get_sband(sdata);
1285         if (!sband)
1286                 return -EINVAL;
1287
1288         mask = params->sta_flags_mask;
1289         set = params->sta_flags_set;
1290
1291         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1292                 /*
1293                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1294                  * API but must follow AUTHENTICATED for driver state.
1295                  */
1296                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1297                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1298                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1299                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1300         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1301                 /*
1302                  * TDLS -- everything follows authorized, but
1303                  * only becoming authorized is possible, not
1304                  * going back
1305                  */
1306                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1307                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1308                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1309                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1310                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1311                 }
1312         }
1313
1314         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1315             local->hw.queues >= IEEE80211_NUM_ACS)
1316                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1317
1318         /* auth flags will be set later for TDLS,
1319          * and for unassociated stations that move to assocaited */
1320         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1321             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1322               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1323                 ret = sta_apply_auth_flags(local, sta, mask, set);
1324                 if (ret)
1325                         return ret;
1326         }
1327
1328         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1329                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1330                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1331                 else
1332                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1333         }
1334
1335         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1336                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1337                 if (set & BIT(NL80211_STA_FLAG_MFP))
1338                         set_sta_flag(sta, WLAN_STA_MFP);
1339                 else
1340                         clear_sta_flag(sta, WLAN_STA_MFP);
1341         }
1342
1343         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1344                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1345                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1346                 else
1347                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1348         }
1349
1350         /* mark TDLS channel switch support, if the AP allows it */
1351         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1352             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1353             params->ext_capab_len >= 4 &&
1354             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1355                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1356
1357         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1358             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1359             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1360             params->ext_capab_len >= 8 &&
1361             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1362                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1363
1364         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1365                 sta->sta.uapsd_queues = params->uapsd_queues;
1366                 sta->sta.max_sp = params->max_sp;
1367         }
1368
1369         /* The sender might not have sent the last bit, consider it to be 0 */
1370         if (params->ext_capab_len >= 8) {
1371                 u8 val = (params->ext_capab[7] &
1372                           WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1373
1374                 /* we did get all the bits, take the MSB as well */
1375                 if (params->ext_capab_len >= 9) {
1376                         u8 val_msb = params->ext_capab[8] &
1377                                 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1378                         val_msb <<= 1;
1379                         val |= val_msb;
1380                 }
1381
1382                 switch (val) {
1383                 case 1:
1384                         sta->sta.max_amsdu_subframes = 32;
1385                         break;
1386                 case 2:
1387                         sta->sta.max_amsdu_subframes = 16;
1388                         break;
1389                 case 3:
1390                         sta->sta.max_amsdu_subframes = 8;
1391                         break;
1392                 default:
1393                         sta->sta.max_amsdu_subframes = 0;
1394                 }
1395         }
1396
1397         /*
1398          * cfg80211 validates this (1-2007) and allows setting the AID
1399          * only when creating a new station entry
1400          */
1401         if (params->aid)
1402                 sta->sta.aid = params->aid;
1403
1404         /*
1405          * Some of the following updates would be racy if called on an
1406          * existing station, via ieee80211_change_station(). However,
1407          * all such changes are rejected by cfg80211 except for updates
1408          * changing the supported rates on an existing but not yet used
1409          * TDLS peer.
1410          */
1411
1412         if (params->listen_interval >= 0)
1413                 sta->listen_interval = params->listen_interval;
1414
1415         if (params->supported_rates) {
1416                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1417                                          sband, params->supported_rates,
1418                                          params->supported_rates_len,
1419                                          &sta->sta.supp_rates[sband->band]);
1420         }
1421
1422         if (params->ht_capa)
1423                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1424                                                   params->ht_capa, sta);
1425
1426         /* VHT can override some HT caps such as the A-MSDU max length */
1427         if (params->vht_capa)
1428                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1429                                                     params->vht_capa, sta);
1430
1431         if (params->he_capa)
1432                 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
1433                                                   (void *)params->he_capa,
1434                                                   params->he_capa_len, sta);
1435
1436         if (params->opmode_notif_used) {
1437                 /* returned value is only needed for rc update, but the
1438                  * rc isn't initialized here yet, so ignore it
1439                  */
1440                 __ieee80211_vht_handle_opmode(sdata, sta, params->opmode_notif,
1441                                               sband->band);
1442         }
1443
1444         if (params->support_p2p_ps >= 0)
1445                 sta->sta.support_p2p_ps = params->support_p2p_ps;
1446
1447         if (ieee80211_vif_is_mesh(&sdata->vif))
1448                 sta_apply_mesh_params(local, sta, params);
1449
1450         /* set the STA state after all sta info from usermode has been set */
1451         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1452             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1453                 ret = sta_apply_auth_flags(local, sta, mask, set);
1454                 if (ret)
1455                         return ret;
1456         }
1457
1458         return 0;
1459 }
1460
1461 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1462                                  const u8 *mac,
1463                                  struct station_parameters *params)
1464 {
1465         struct ieee80211_local *local = wiphy_priv(wiphy);
1466         struct sta_info *sta;
1467         struct ieee80211_sub_if_data *sdata;
1468         int err;
1469         int layer2_update;
1470
1471         if (params->vlan) {
1472                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1473
1474                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1475                     sdata->vif.type != NL80211_IFTYPE_AP)
1476                         return -EINVAL;
1477         } else
1478                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1479
1480         if (ether_addr_equal(mac, sdata->vif.addr))
1481                 return -EINVAL;
1482
1483         if (is_multicast_ether_addr(mac))
1484                 return -EINVAL;
1485
1486         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1487         if (!sta)
1488                 return -ENOMEM;
1489
1490         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1491                 sta->sta.tdls = true;
1492
1493         err = sta_apply_parameters(local, sta, params);
1494         if (err) {
1495                 sta_info_free(local, sta);
1496                 return err;
1497         }
1498
1499         /*
1500          * for TDLS and for unassociated station, rate control should be
1501          * initialized only when rates are known and station is marked
1502          * authorized/associated
1503          */
1504         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1505             test_sta_flag(sta, WLAN_STA_ASSOC))
1506                 rate_control_rate_init(sta);
1507
1508         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1509                 sdata->vif.type == NL80211_IFTYPE_AP;
1510
1511         err = sta_info_insert_rcu(sta);
1512         if (err) {
1513                 rcu_read_unlock();
1514                 return err;
1515         }
1516
1517         if (layer2_update)
1518                 cfg80211_send_layer2_update(sta->sdata->dev, sta->sta.addr);
1519
1520         rcu_read_unlock();
1521
1522         return 0;
1523 }
1524
1525 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1526                                  struct station_del_parameters *params)
1527 {
1528         struct ieee80211_sub_if_data *sdata;
1529
1530         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1531
1532         if (params->mac)
1533                 return sta_info_destroy_addr_bss(sdata, params->mac);
1534
1535         sta_info_flush(sdata);
1536         return 0;
1537 }
1538
1539 static int ieee80211_change_station(struct wiphy *wiphy,
1540                                     struct net_device *dev, const u8 *mac,
1541                                     struct station_parameters *params)
1542 {
1543         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1544         struct ieee80211_local *local = wiphy_priv(wiphy);
1545         struct sta_info *sta;
1546         struct ieee80211_sub_if_data *vlansdata;
1547         enum cfg80211_station_type statype;
1548         int err;
1549
1550         mutex_lock(&local->sta_mtx);
1551
1552         sta = sta_info_get_bss(sdata, mac);
1553         if (!sta) {
1554                 err = -ENOENT;
1555                 goto out_err;
1556         }
1557
1558         switch (sdata->vif.type) {
1559         case NL80211_IFTYPE_MESH_POINT:
1560                 if (sdata->u.mesh.user_mpm)
1561                         statype = CFG80211_STA_MESH_PEER_USER;
1562                 else
1563                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1564                 break;
1565         case NL80211_IFTYPE_ADHOC:
1566                 statype = CFG80211_STA_IBSS;
1567                 break;
1568         case NL80211_IFTYPE_STATION:
1569                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1570                         statype = CFG80211_STA_AP_STA;
1571                         break;
1572                 }
1573                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1574                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1575                 else
1576                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1577                 break;
1578         case NL80211_IFTYPE_AP:
1579         case NL80211_IFTYPE_AP_VLAN:
1580                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1581                         statype = CFG80211_STA_AP_CLIENT;
1582                 else
1583                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1584                 break;
1585         default:
1586                 err = -EOPNOTSUPP;
1587                 goto out_err;
1588         }
1589
1590         err = cfg80211_check_station_change(wiphy, params, statype);
1591         if (err)
1592                 goto out_err;
1593
1594         if (params->vlan && params->vlan != sta->sdata->dev) {
1595                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1596
1597                 if (params->vlan->ieee80211_ptr->use_4addr) {
1598                         if (vlansdata->u.vlan.sta) {
1599                                 err = -EBUSY;
1600                                 goto out_err;
1601                         }
1602
1603                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1604                         __ieee80211_check_fast_rx_iface(vlansdata);
1605                 }
1606
1607                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1608                     sta->sdata->u.vlan.sta)
1609                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1610
1611                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1612                         ieee80211_vif_dec_num_mcast(sta->sdata);
1613
1614                 sta->sdata = vlansdata;
1615                 ieee80211_check_fast_xmit(sta);
1616
1617                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1618                         ieee80211_vif_inc_num_mcast(sta->sdata);
1619
1620                 cfg80211_send_layer2_update(sta->sdata->dev, sta->sta.addr);
1621         }
1622
1623         err = sta_apply_parameters(local, sta, params);
1624         if (err)
1625                 goto out_err;
1626
1627         mutex_unlock(&local->sta_mtx);
1628
1629         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1630              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1631             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1632             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1633             sta_info_tx_streams(sta) != 1) {
1634                 ht_dbg(sta->sdata,
1635                        "%pM just authorized and MIMO capable - update SMPS\n",
1636                        sta->sta.addr);
1637                 ieee80211_send_smps_action(sta->sdata,
1638                         sta->sdata->bss->req_smps,
1639                         sta->sta.addr,
1640                         sta->sdata->vif.bss_conf.bssid);
1641         }
1642
1643         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1644             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1645                 ieee80211_recalc_ps(local);
1646                 ieee80211_recalc_ps_vif(sdata);
1647         }
1648
1649         return 0;
1650 out_err:
1651         mutex_unlock(&local->sta_mtx);
1652         return err;
1653 }
1654
1655 #ifdef CONFIG_MAC80211_MESH
1656 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1657                                const u8 *dst, const u8 *next_hop)
1658 {
1659         struct ieee80211_sub_if_data *sdata;
1660         struct mesh_path *mpath;
1661         struct sta_info *sta;
1662
1663         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1664
1665         rcu_read_lock();
1666         sta = sta_info_get(sdata, next_hop);
1667         if (!sta) {
1668                 rcu_read_unlock();
1669                 return -ENOENT;
1670         }
1671
1672         mpath = mesh_path_add(sdata, dst);
1673         if (IS_ERR(mpath)) {
1674                 rcu_read_unlock();
1675                 return PTR_ERR(mpath);
1676         }
1677
1678         mesh_path_fix_nexthop(mpath, sta);
1679
1680         rcu_read_unlock();
1681         return 0;
1682 }
1683
1684 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1685                                const u8 *dst)
1686 {
1687         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1688
1689         if (dst)
1690                 return mesh_path_del(sdata, dst);
1691
1692         mesh_path_flush_by_iface(sdata);
1693         return 0;
1694 }
1695
1696 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1697                                   const u8 *dst, const u8 *next_hop)
1698 {
1699         struct ieee80211_sub_if_data *sdata;
1700         struct mesh_path *mpath;
1701         struct sta_info *sta;
1702
1703         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1704
1705         rcu_read_lock();
1706
1707         sta = sta_info_get(sdata, next_hop);
1708         if (!sta) {
1709                 rcu_read_unlock();
1710                 return -ENOENT;
1711         }
1712
1713         mpath = mesh_path_lookup(sdata, dst);
1714         if (!mpath) {
1715                 rcu_read_unlock();
1716                 return -ENOENT;
1717         }
1718
1719         mesh_path_fix_nexthop(mpath, sta);
1720
1721         rcu_read_unlock();
1722         return 0;
1723 }
1724
1725 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1726                             struct mpath_info *pinfo)
1727 {
1728         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1729
1730         if (next_hop_sta)
1731                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1732         else
1733                 eth_zero_addr(next_hop);
1734
1735         memset(pinfo, 0, sizeof(*pinfo));
1736
1737         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1738
1739         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1740                         MPATH_INFO_SN |
1741                         MPATH_INFO_METRIC |
1742                         MPATH_INFO_EXPTIME |
1743                         MPATH_INFO_DISCOVERY_TIMEOUT |
1744                         MPATH_INFO_DISCOVERY_RETRIES |
1745                         MPATH_INFO_FLAGS;
1746
1747         pinfo->frame_qlen = mpath->frame_queue.qlen;
1748         pinfo->sn = mpath->sn;
1749         pinfo->metric = mpath->metric;
1750         if (time_before(jiffies, mpath->exp_time))
1751                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1752         pinfo->discovery_timeout =
1753                         jiffies_to_msecs(mpath->discovery_timeout);
1754         pinfo->discovery_retries = mpath->discovery_retries;
1755         if (mpath->flags & MESH_PATH_ACTIVE)
1756                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1757         if (mpath->flags & MESH_PATH_RESOLVING)
1758                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1759         if (mpath->flags & MESH_PATH_SN_VALID)
1760                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1761         if (mpath->flags & MESH_PATH_FIXED)
1762                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1763         if (mpath->flags & MESH_PATH_RESOLVED)
1764                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1765 }
1766
1767 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1768                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1769
1770 {
1771         struct ieee80211_sub_if_data *sdata;
1772         struct mesh_path *mpath;
1773
1774         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1775
1776         rcu_read_lock();
1777         mpath = mesh_path_lookup(sdata, dst);
1778         if (!mpath) {
1779                 rcu_read_unlock();
1780                 return -ENOENT;
1781         }
1782         memcpy(dst, mpath->dst, ETH_ALEN);
1783         mpath_set_pinfo(mpath, next_hop, pinfo);
1784         rcu_read_unlock();
1785         return 0;
1786 }
1787
1788 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1789                                 int idx, u8 *dst, u8 *next_hop,
1790                                 struct mpath_info *pinfo)
1791 {
1792         struct ieee80211_sub_if_data *sdata;
1793         struct mesh_path *mpath;
1794
1795         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1796
1797         rcu_read_lock();
1798         mpath = mesh_path_lookup_by_idx(sdata, idx);
1799         if (!mpath) {
1800                 rcu_read_unlock();
1801                 return -ENOENT;
1802         }
1803         memcpy(dst, mpath->dst, ETH_ALEN);
1804         mpath_set_pinfo(mpath, next_hop, pinfo);
1805         rcu_read_unlock();
1806         return 0;
1807 }
1808
1809 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1810                           struct mpath_info *pinfo)
1811 {
1812         memset(pinfo, 0, sizeof(*pinfo));
1813         memcpy(mpp, mpath->mpp, ETH_ALEN);
1814
1815         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1816 }
1817
1818 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1819                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1820
1821 {
1822         struct ieee80211_sub_if_data *sdata;
1823         struct mesh_path *mpath;
1824
1825         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1826
1827         rcu_read_lock();
1828         mpath = mpp_path_lookup(sdata, dst);
1829         if (!mpath) {
1830                 rcu_read_unlock();
1831                 return -ENOENT;
1832         }
1833         memcpy(dst, mpath->dst, ETH_ALEN);
1834         mpp_set_pinfo(mpath, mpp, pinfo);
1835         rcu_read_unlock();
1836         return 0;
1837 }
1838
1839 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1840                               int idx, u8 *dst, u8 *mpp,
1841                               struct mpath_info *pinfo)
1842 {
1843         struct ieee80211_sub_if_data *sdata;
1844         struct mesh_path *mpath;
1845
1846         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1847
1848         rcu_read_lock();
1849         mpath = mpp_path_lookup_by_idx(sdata, idx);
1850         if (!mpath) {
1851                 rcu_read_unlock();
1852                 return -ENOENT;
1853         }
1854         memcpy(dst, mpath->dst, ETH_ALEN);
1855         mpp_set_pinfo(mpath, mpp, pinfo);
1856         rcu_read_unlock();
1857         return 0;
1858 }
1859
1860 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1861                                 struct net_device *dev,
1862                                 struct mesh_config *conf)
1863 {
1864         struct ieee80211_sub_if_data *sdata;
1865         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1866
1867         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1868         return 0;
1869 }
1870
1871 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1872 {
1873         return (mask >> (parm-1)) & 0x1;
1874 }
1875
1876 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1877                 const struct mesh_setup *setup)
1878 {
1879         u8 *new_ie;
1880         const u8 *old_ie;
1881         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1882                                         struct ieee80211_sub_if_data, u.mesh);
1883
1884         /* allocate information elements */
1885         new_ie = NULL;
1886         old_ie = ifmsh->ie;
1887
1888         if (setup->ie_len) {
1889                 new_ie = kmemdup(setup->ie, setup->ie_len,
1890                                 GFP_KERNEL);
1891                 if (!new_ie)
1892                         return -ENOMEM;
1893         }
1894         ifmsh->ie_len = setup->ie_len;
1895         ifmsh->ie = new_ie;
1896         kfree(old_ie);
1897
1898         /* now copy the rest of the setup parameters */
1899         ifmsh->mesh_id_len = setup->mesh_id_len;
1900         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1901         ifmsh->mesh_sp_id = setup->sync_method;
1902         ifmsh->mesh_pp_id = setup->path_sel_proto;
1903         ifmsh->mesh_pm_id = setup->path_metric;
1904         ifmsh->user_mpm = setup->user_mpm;
1905         ifmsh->mesh_auth_id = setup->auth_id;
1906         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1907         ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs;
1908         if (setup->is_authenticated)
1909                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1910         if (setup->is_secure)
1911                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1912
1913         /* mcast rate setting in Mesh Node */
1914         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1915                                                 sizeof(setup->mcast_rate));
1916         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1917
1918         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1919         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1920
1921         return 0;
1922 }
1923
1924 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1925                                         struct net_device *dev, u32 mask,
1926                                         const struct mesh_config *nconf)
1927 {
1928         struct mesh_config *conf;
1929         struct ieee80211_sub_if_data *sdata;
1930         struct ieee80211_if_mesh *ifmsh;
1931
1932         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1933         ifmsh = &sdata->u.mesh;
1934
1935         /* Set the config options which we are interested in setting */
1936         conf = &(sdata->u.mesh.mshcfg);
1937         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1938                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1939         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1940                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1941         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1942                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1943         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1944                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1945         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1946                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1947         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1948                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1949         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1950                 conf->element_ttl = nconf->element_ttl;
1951         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1952                 if (ifmsh->user_mpm)
1953                         return -EBUSY;
1954                 conf->auto_open_plinks = nconf->auto_open_plinks;
1955         }
1956         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1957                 conf->dot11MeshNbrOffsetMaxNeighbor =
1958                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1959         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1960                 conf->dot11MeshHWMPmaxPREQretries =
1961                         nconf->dot11MeshHWMPmaxPREQretries;
1962         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1963                 conf->path_refresh_time = nconf->path_refresh_time;
1964         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1965                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1966         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1967                 conf->dot11MeshHWMPactivePathTimeout =
1968                         nconf->dot11MeshHWMPactivePathTimeout;
1969         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1970                 conf->dot11MeshHWMPpreqMinInterval =
1971                         nconf->dot11MeshHWMPpreqMinInterval;
1972         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1973                 conf->dot11MeshHWMPperrMinInterval =
1974                         nconf->dot11MeshHWMPperrMinInterval;
1975         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1976                            mask))
1977                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1978                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1979         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1980                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1981                 ieee80211_mesh_root_setup(ifmsh);
1982         }
1983         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1984                 /* our current gate announcement implementation rides on root
1985                  * announcements, so require this ifmsh to also be a root node
1986                  * */
1987                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1988                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1989                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1990                         ieee80211_mesh_root_setup(ifmsh);
1991                 }
1992                 conf->dot11MeshGateAnnouncementProtocol =
1993                         nconf->dot11MeshGateAnnouncementProtocol;
1994         }
1995         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1996                 conf->dot11MeshHWMPRannInterval =
1997                         nconf->dot11MeshHWMPRannInterval;
1998         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1999                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
2000         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
2001                 /* our RSSI threshold implementation is supported only for
2002                  * devices that report signal in dBm.
2003                  */
2004                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
2005                         return -ENOTSUPP;
2006                 conf->rssi_threshold = nconf->rssi_threshold;
2007         }
2008         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
2009                 conf->ht_opmode = nconf->ht_opmode;
2010                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
2011                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
2012         }
2013         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
2014                 conf->dot11MeshHWMPactivePathToRootTimeout =
2015                         nconf->dot11MeshHWMPactivePathToRootTimeout;
2016         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
2017                 conf->dot11MeshHWMProotInterval =
2018                         nconf->dot11MeshHWMProotInterval;
2019         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
2020                 conf->dot11MeshHWMPconfirmationInterval =
2021                         nconf->dot11MeshHWMPconfirmationInterval;
2022         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
2023                 conf->power_mode = nconf->power_mode;
2024                 ieee80211_mps_local_status_update(sdata);
2025         }
2026         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
2027                 conf->dot11MeshAwakeWindowDuration =
2028                         nconf->dot11MeshAwakeWindowDuration;
2029         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2030                 conf->plink_timeout = nconf->plink_timeout;
2031         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2032         return 0;
2033 }
2034
2035 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2036                                const struct mesh_config *conf,
2037                                const struct mesh_setup *setup)
2038 {
2039         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2040         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2041         int err;
2042
2043         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2044         err = copy_mesh_setup(ifmsh, setup);
2045         if (err)
2046                 return err;
2047
2048         sdata->control_port_over_nl80211 = setup->control_port_over_nl80211;
2049
2050         /* can mesh use other SMPS modes? */
2051         sdata->smps_mode = IEEE80211_SMPS_OFF;
2052         sdata->needed_rx_chains = sdata->local->rx_chains;
2053
2054         mutex_lock(&sdata->local->mtx);
2055         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
2056                                         IEEE80211_CHANCTX_SHARED);
2057         mutex_unlock(&sdata->local->mtx);
2058         if (err)
2059                 return err;
2060
2061         return ieee80211_start_mesh(sdata);
2062 }
2063
2064 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2065 {
2066         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2067
2068         ieee80211_stop_mesh(sdata);
2069         mutex_lock(&sdata->local->mtx);
2070         ieee80211_vif_release_channel(sdata);
2071         mutex_unlock(&sdata->local->mtx);
2072
2073         return 0;
2074 }
2075 #endif
2076
2077 static int ieee80211_change_bss(struct wiphy *wiphy,
2078                                 struct net_device *dev,
2079                                 struct bss_parameters *params)
2080 {
2081         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2082         struct ieee80211_supported_band *sband;
2083         u32 changed = 0;
2084
2085         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2086                 return -ENOENT;
2087
2088         sband = ieee80211_get_sband(sdata);
2089         if (!sband)
2090                 return -EINVAL;
2091
2092         if (params->use_cts_prot >= 0) {
2093                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2094                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2095         }
2096         if (params->use_short_preamble >= 0) {
2097                 sdata->vif.bss_conf.use_short_preamble =
2098                         params->use_short_preamble;
2099                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2100         }
2101
2102         if (!sdata->vif.bss_conf.use_short_slot &&
2103             sband->band == NL80211_BAND_5GHZ) {
2104                 sdata->vif.bss_conf.use_short_slot = true;
2105                 changed |= BSS_CHANGED_ERP_SLOT;
2106         }
2107
2108         if (params->use_short_slot_time >= 0) {
2109                 sdata->vif.bss_conf.use_short_slot =
2110                         params->use_short_slot_time;
2111                 changed |= BSS_CHANGED_ERP_SLOT;
2112         }
2113
2114         if (params->basic_rates) {
2115                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2116                                          wiphy->bands[sband->band],
2117                                          params->basic_rates,
2118                                          params->basic_rates_len,
2119                                          &sdata->vif.bss_conf.basic_rates);
2120                 changed |= BSS_CHANGED_BASIC_RATES;
2121                 ieee80211_check_rate_mask(sdata);
2122         }
2123
2124         if (params->ap_isolate >= 0) {
2125                 if (params->ap_isolate)
2126                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2127                 else
2128                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2129                 ieee80211_check_fast_rx_iface(sdata);
2130         }
2131
2132         if (params->ht_opmode >= 0) {
2133                 sdata->vif.bss_conf.ht_operation_mode =
2134                         (u16) params->ht_opmode;
2135                 changed |= BSS_CHANGED_HT;
2136         }
2137
2138         if (params->p2p_ctwindow >= 0) {
2139                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2140                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2141                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2142                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2143                 changed |= BSS_CHANGED_P2P_PS;
2144         }
2145
2146         if (params->p2p_opp_ps > 0) {
2147                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2148                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2149                 changed |= BSS_CHANGED_P2P_PS;
2150         } else if (params->p2p_opp_ps == 0) {
2151                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2152                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2153                 changed |= BSS_CHANGED_P2P_PS;
2154         }
2155
2156         ieee80211_bss_info_change_notify(sdata, changed);
2157
2158         return 0;
2159 }
2160
2161 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2162                                     struct net_device *dev,
2163                                     struct ieee80211_txq_params *params)
2164 {
2165         struct ieee80211_local *local = wiphy_priv(wiphy);
2166         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2167         struct ieee80211_tx_queue_params p;
2168
2169         if (!local->ops->conf_tx)
2170                 return -EOPNOTSUPP;
2171
2172         if (local->hw.queues < IEEE80211_NUM_ACS)
2173                 return -EOPNOTSUPP;
2174
2175         memset(&p, 0, sizeof(p));
2176         p.aifs = params->aifs;
2177         p.cw_max = params->cwmax;
2178         p.cw_min = params->cwmin;
2179         p.txop = params->txop;
2180
2181         /*
2182          * Setting tx queue params disables u-apsd because it's only
2183          * called in master mode.
2184          */
2185         p.uapsd = false;
2186
2187         ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac);
2188
2189         sdata->tx_conf[params->ac] = p;
2190         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2191                 wiphy_debug(local->hw.wiphy,
2192                             "failed to set TX queue parameters for AC %d\n",
2193                             params->ac);
2194                 return -EINVAL;
2195         }
2196
2197         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2198
2199         return 0;
2200 }
2201
2202 #ifdef CONFIG_PM
2203 static int ieee80211_suspend(struct wiphy *wiphy,
2204                              struct cfg80211_wowlan *wowlan)
2205 {
2206         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2207 }
2208
2209 static int ieee80211_resume(struct wiphy *wiphy)
2210 {
2211         return __ieee80211_resume(wiphy_priv(wiphy));
2212 }
2213 #else
2214 #define ieee80211_suspend NULL
2215 #define ieee80211_resume NULL
2216 #endif
2217
2218 static int ieee80211_scan(struct wiphy *wiphy,
2219                           struct cfg80211_scan_request *req)
2220 {
2221         struct ieee80211_sub_if_data *sdata;
2222
2223         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2224
2225         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2226         case NL80211_IFTYPE_STATION:
2227         case NL80211_IFTYPE_ADHOC:
2228         case NL80211_IFTYPE_MESH_POINT:
2229         case NL80211_IFTYPE_P2P_CLIENT:
2230         case NL80211_IFTYPE_P2P_DEVICE:
2231                 break;
2232         case NL80211_IFTYPE_P2P_GO:
2233                 if (sdata->local->ops->hw_scan)
2234                         break;
2235                 /*
2236                  * FIXME: implement NoA while scanning in software,
2237                  * for now fall through to allow scanning only when
2238                  * beaconing hasn't been configured yet
2239                  */
2240                 /* fall through */
2241         case NL80211_IFTYPE_AP:
2242                 /*
2243                  * If the scan has been forced (and the driver supports
2244                  * forcing), don't care about being beaconing already.
2245                  * This will create problems to the attached stations (e.g. all
2246                  * the  frames sent while scanning on other channel will be
2247                  * lost)
2248                  */
2249                 if (sdata->u.ap.beacon &&
2250                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2251                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2252                         return -EOPNOTSUPP;
2253                 break;
2254         case NL80211_IFTYPE_NAN:
2255         default:
2256                 return -EOPNOTSUPP;
2257         }
2258
2259         return ieee80211_request_scan(sdata, req);
2260 }
2261
2262 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2263 {
2264         ieee80211_scan_cancel(wiphy_priv(wiphy));
2265 }
2266
2267 static int
2268 ieee80211_sched_scan_start(struct wiphy *wiphy,
2269                            struct net_device *dev,
2270                            struct cfg80211_sched_scan_request *req)
2271 {
2272         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2273
2274         if (!sdata->local->ops->sched_scan_start)
2275                 return -EOPNOTSUPP;
2276
2277         return ieee80211_request_sched_scan_start(sdata, req);
2278 }
2279
2280 static int
2281 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2282                           u64 reqid)
2283 {
2284         struct ieee80211_local *local = wiphy_priv(wiphy);
2285
2286         if (!local->ops->sched_scan_stop)
2287                 return -EOPNOTSUPP;
2288
2289         return ieee80211_request_sched_scan_stop(local);
2290 }
2291
2292 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2293                           struct cfg80211_auth_request *req)
2294 {
2295         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2296 }
2297
2298 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2299                            struct cfg80211_assoc_request *req)
2300 {
2301         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2302 }
2303
2304 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2305                             struct cfg80211_deauth_request *req)
2306 {
2307         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2308 }
2309
2310 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2311                               struct cfg80211_disassoc_request *req)
2312 {
2313         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2314 }
2315
2316 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2317                                struct cfg80211_ibss_params *params)
2318 {
2319         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2320 }
2321
2322 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2323 {
2324         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2325 }
2326
2327 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2328                               struct ocb_setup *setup)
2329 {
2330         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2331 }
2332
2333 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2334 {
2335         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2336 }
2337
2338 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2339                                     int rate[NUM_NL80211_BANDS])
2340 {
2341         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2342
2343         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2344                sizeof(int) * NUM_NL80211_BANDS);
2345
2346         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MCAST_RATE);
2347
2348         return 0;
2349 }
2350
2351 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2352 {
2353         struct ieee80211_local *local = wiphy_priv(wiphy);
2354         int err;
2355
2356         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2357                 ieee80211_check_fast_xmit_all(local);
2358
2359                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2360
2361                 if (err) {
2362                         ieee80211_check_fast_xmit_all(local);
2363                         return err;
2364                 }
2365         }
2366
2367         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2368             (changed & WIPHY_PARAM_DYN_ACK)) {
2369                 s16 coverage_class;
2370
2371                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2372                                         wiphy->coverage_class : -1;
2373                 err = drv_set_coverage_class(local, coverage_class);
2374
2375                 if (err)
2376                         return err;
2377         }
2378
2379         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2380                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2381
2382                 if (err)
2383                         return err;
2384         }
2385
2386         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2387                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2388                         return -EINVAL;
2389                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2390         }
2391         if (changed & WIPHY_PARAM_RETRY_LONG) {
2392                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2393                         return -EINVAL;
2394                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2395         }
2396         if (changed &
2397             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2398                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2399
2400         if (changed & (WIPHY_PARAM_TXQ_LIMIT |
2401                        WIPHY_PARAM_TXQ_MEMORY_LIMIT |
2402                        WIPHY_PARAM_TXQ_QUANTUM))
2403                 ieee80211_txq_set_params(local);
2404
2405         return 0;
2406 }
2407
2408 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2409                                   struct wireless_dev *wdev,
2410                                   enum nl80211_tx_power_setting type, int mbm)
2411 {
2412         struct ieee80211_local *local = wiphy_priv(wiphy);
2413         struct ieee80211_sub_if_data *sdata;
2414         enum nl80211_tx_power_setting txp_type = type;
2415         bool update_txp_type = false;
2416         bool has_monitor = false;
2417
2418         if (wdev) {
2419                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2420
2421                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2422                         sdata = rtnl_dereference(local->monitor_sdata);
2423                         if (!sdata)
2424                                 return -EOPNOTSUPP;
2425                 }
2426
2427                 switch (type) {
2428                 case NL80211_TX_POWER_AUTOMATIC:
2429                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2430                         txp_type = NL80211_TX_POWER_LIMITED;
2431                         break;
2432                 case NL80211_TX_POWER_LIMITED:
2433                 case NL80211_TX_POWER_FIXED:
2434                         if (mbm < 0 || (mbm % 100))
2435                                 return -EOPNOTSUPP;
2436                         sdata->user_power_level = MBM_TO_DBM(mbm);
2437                         break;
2438                 }
2439
2440                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2441                         update_txp_type = true;
2442                         sdata->vif.bss_conf.txpower_type = txp_type;
2443                 }
2444
2445                 ieee80211_recalc_txpower(sdata, update_txp_type);
2446
2447                 return 0;
2448         }
2449
2450         switch (type) {
2451         case NL80211_TX_POWER_AUTOMATIC:
2452                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2453                 txp_type = NL80211_TX_POWER_LIMITED;
2454                 break;
2455         case NL80211_TX_POWER_LIMITED:
2456         case NL80211_TX_POWER_FIXED:
2457                 if (mbm < 0 || (mbm % 100))
2458                         return -EOPNOTSUPP;
2459                 local->user_power_level = MBM_TO_DBM(mbm);
2460                 break;
2461         }
2462
2463         mutex_lock(&local->iflist_mtx);
2464         list_for_each_entry(sdata, &local->interfaces, list) {
2465                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2466                         has_monitor = true;
2467                         continue;
2468                 }
2469                 sdata->user_power_level = local->user_power_level;
2470                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2471                         update_txp_type = true;
2472                 sdata->vif.bss_conf.txpower_type = txp_type;
2473         }
2474         list_for_each_entry(sdata, &local->interfaces, list) {
2475                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
2476                         continue;
2477                 ieee80211_recalc_txpower(sdata, update_txp_type);
2478         }
2479         mutex_unlock(&local->iflist_mtx);
2480
2481         if (has_monitor) {
2482                 sdata = rtnl_dereference(local->monitor_sdata);
2483                 if (sdata) {
2484                         sdata->user_power_level = local->user_power_level;
2485                         if (txp_type != sdata->vif.bss_conf.txpower_type)
2486                                 update_txp_type = true;
2487                         sdata->vif.bss_conf.txpower_type = txp_type;
2488
2489                         ieee80211_recalc_txpower(sdata, update_txp_type);
2490                 }
2491         }
2492
2493         return 0;
2494 }
2495
2496 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2497                                   struct wireless_dev *wdev,
2498                                   int *dbm)
2499 {
2500         struct ieee80211_local *local = wiphy_priv(wiphy);
2501         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2502
2503         if (local->ops->get_txpower)
2504                 return drv_get_txpower(local, sdata, dbm);
2505
2506         if (!local->use_chanctx)
2507                 *dbm = local->hw.conf.power_level;
2508         else
2509                 *dbm = sdata->vif.bss_conf.txpower;
2510
2511         return 0;
2512 }
2513
2514 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2515                                   const u8 *addr)
2516 {
2517         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2518
2519         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2520
2521         return 0;
2522 }
2523
2524 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2525 {
2526         struct ieee80211_local *local = wiphy_priv(wiphy);
2527
2528         drv_rfkill_poll(local);
2529 }
2530
2531 #ifdef CONFIG_NL80211_TESTMODE
2532 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2533                                   struct wireless_dev *wdev,
2534                                   void *data, int len)
2535 {
2536         struct ieee80211_local *local = wiphy_priv(wiphy);
2537         struct ieee80211_vif *vif = NULL;
2538
2539         if (!local->ops->testmode_cmd)
2540                 return -EOPNOTSUPP;
2541
2542         if (wdev) {
2543                 struct ieee80211_sub_if_data *sdata;
2544
2545                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2546                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2547                         vif = &sdata->vif;
2548         }
2549
2550         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2551 }
2552
2553 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2554                                    struct sk_buff *skb,
2555                                    struct netlink_callback *cb,
2556                                    void *data, int len)
2557 {
2558         struct ieee80211_local *local = wiphy_priv(wiphy);
2559
2560         if (!local->ops->testmode_dump)
2561                 return -EOPNOTSUPP;
2562
2563         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2564 }
2565 #endif
2566
2567 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2568                                 enum ieee80211_smps_mode smps_mode)
2569 {
2570         struct sta_info *sta;
2571         enum ieee80211_smps_mode old_req;
2572
2573         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2574                 return -EINVAL;
2575
2576         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2577                 return 0;
2578
2579         old_req = sdata->u.ap.req_smps;
2580         sdata->u.ap.req_smps = smps_mode;
2581
2582         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2583         if (old_req == smps_mode ||
2584             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2585                 return 0;
2586
2587         ht_dbg(sdata,
2588                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2589                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2590
2591         mutex_lock(&sdata->local->sta_mtx);
2592         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2593                 /*
2594                  * Only stations associated to our AP and
2595                  * associated VLANs
2596                  */
2597                 if (sta->sdata->bss != &sdata->u.ap)
2598                         continue;
2599
2600                 /* This station doesn't support MIMO - skip it */
2601                 if (sta_info_tx_streams(sta) == 1)
2602                         continue;
2603
2604                 /*
2605                  * Don't wake up a STA just to send the action frame
2606                  * unless we are getting more restrictive.
2607                  */
2608                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2609                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2610                                                    smps_mode)) {
2611                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2612                                sta->sta.addr);
2613                         continue;
2614                 }
2615
2616                 /*
2617                  * If the STA is not authorized, wait until it gets
2618                  * authorized and the action frame will be sent then.
2619                  */
2620                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2621                         continue;
2622
2623                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2624                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2625                                            sdata->vif.bss_conf.bssid);
2626         }
2627         mutex_unlock(&sdata->local->sta_mtx);
2628
2629         sdata->smps_mode = smps_mode;
2630         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2631
2632         return 0;
2633 }
2634
2635 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2636                                  enum ieee80211_smps_mode smps_mode)
2637 {
2638         const u8 *ap;
2639         enum ieee80211_smps_mode old_req;
2640         int err;
2641         struct sta_info *sta;
2642         bool tdls_peer_found = false;
2643
2644         lockdep_assert_held(&sdata->wdev.mtx);
2645
2646         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2647                 return -EINVAL;
2648
2649         old_req = sdata->u.mgd.req_smps;
2650         sdata->u.mgd.req_smps = smps_mode;
2651
2652         if (old_req == smps_mode &&
2653             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2654                 return 0;
2655
2656         /*
2657          * If not associated, or current association is not an HT
2658          * association, there's no need to do anything, just store
2659          * the new value until we associate.
2660          */
2661         if (!sdata->u.mgd.associated ||
2662             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2663                 return 0;
2664
2665         ap = sdata->u.mgd.associated->bssid;
2666
2667         rcu_read_lock();
2668         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2669                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2670                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2671                         continue;
2672
2673                 tdls_peer_found = true;
2674                 break;
2675         }
2676         rcu_read_unlock();
2677
2678         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2679                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2680                         smps_mode = IEEE80211_SMPS_OFF;
2681                 else
2682                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2683         }
2684
2685         /* send SM PS frame to AP */
2686         err = ieee80211_send_smps_action(sdata, smps_mode,
2687                                          ap, ap);
2688         if (err)
2689                 sdata->u.mgd.req_smps = old_req;
2690         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2691                 ieee80211_teardown_tdls_peers(sdata);
2692
2693         return err;
2694 }
2695
2696 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2697                                     bool enabled, int timeout)
2698 {
2699         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2700         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2701
2702         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2703                 return -EOPNOTSUPP;
2704
2705         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2706                 return -EOPNOTSUPP;
2707
2708         if (enabled == sdata->u.mgd.powersave &&
2709             timeout == local->dynamic_ps_forced_timeout)
2710                 return 0;
2711
2712         sdata->u.mgd.powersave = enabled;
2713         local->dynamic_ps_forced_timeout = timeout;
2714
2715         /* no change, but if automatic follow powersave */
2716         sdata_lock(sdata);
2717         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2718         sdata_unlock(sdata);
2719
2720         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2721                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2722
2723         ieee80211_recalc_ps(local);
2724         ieee80211_recalc_ps_vif(sdata);
2725         ieee80211_check_fast_rx_iface(sdata);
2726
2727         return 0;
2728 }
2729
2730 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2731                                          struct net_device *dev,
2732                                          s32 rssi_thold, u32 rssi_hyst)
2733 {
2734         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2735         struct ieee80211_vif *vif = &sdata->vif;
2736         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2737
2738         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2739             rssi_hyst == bss_conf->cqm_rssi_hyst)
2740                 return 0;
2741
2742         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2743             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2744                 return -EOPNOTSUPP;
2745
2746         bss_conf->cqm_rssi_thold = rssi_thold;
2747         bss_conf->cqm_rssi_hyst = rssi_hyst;
2748         bss_conf->cqm_rssi_low = 0;
2749         bss_conf->cqm_rssi_high = 0;
2750         sdata->u.mgd.last_cqm_event_signal = 0;
2751
2752         /* tell the driver upon association, unless already associated */
2753         if (sdata->u.mgd.associated &&
2754             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2755                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2756
2757         return 0;
2758 }
2759
2760 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
2761                                                struct net_device *dev,
2762                                                s32 rssi_low, s32 rssi_high)
2763 {
2764         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2765         struct ieee80211_vif *vif = &sdata->vif;
2766         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2767
2768         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
2769                 return -EOPNOTSUPP;
2770
2771         bss_conf->cqm_rssi_low = rssi_low;
2772         bss_conf->cqm_rssi_high = rssi_high;
2773         bss_conf->cqm_rssi_thold = 0;
2774         bss_conf->cqm_rssi_hyst = 0;
2775         sdata->u.mgd.last_cqm_event_signal = 0;
2776
2777         /* tell the driver upon association, unless already associated */
2778         if (sdata->u.mgd.associated &&
2779             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2780                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2781
2782         return 0;
2783 }
2784
2785 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2786                                       struct net_device *dev,
2787                                       const u8 *addr,
2788                                       const struct cfg80211_bitrate_mask *mask)
2789 {
2790         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2791         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2792         int i, ret;
2793
2794         if (!ieee80211_sdata_running(sdata))
2795                 return -ENETDOWN;
2796
2797         /*
2798          * If active validate the setting and reject it if it doesn't leave
2799          * at least one basic rate usable, since we really have to be able
2800          * to send something, and if we're an AP we have to be able to do
2801          * so at a basic rate so that all clients can receive it.
2802          */
2803         if (rcu_access_pointer(sdata->vif.chanctx_conf) &&
2804             sdata->vif.bss_conf.chandef.chan) {
2805                 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2806                 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band;
2807
2808                 if (!(mask->control[band].legacy & basic_rates))
2809                         return -EINVAL;
2810         }
2811
2812         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2813                 ret = drv_set_bitrate_mask(local, sdata, mask);
2814                 if (ret)
2815                         return ret;
2816         }
2817
2818         for (i = 0; i < NUM_NL80211_BANDS; i++) {
2819                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2820                 int j;
2821
2822                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2823                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2824                        sizeof(mask->control[i].ht_mcs));
2825                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2826                        mask->control[i].vht_mcs,
2827                        sizeof(mask->control[i].vht_mcs));
2828
2829                 sdata->rc_has_mcs_mask[i] = false;
2830                 sdata->rc_has_vht_mcs_mask[i] = false;
2831                 if (!sband)
2832                         continue;
2833
2834                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2835                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2836                                 sdata->rc_has_mcs_mask[i] = true;
2837                                 break;
2838                         }
2839                 }
2840
2841                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2842                         if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2843                                 sdata->rc_has_vht_mcs_mask[i] = true;
2844                                 break;
2845                         }
2846                 }
2847         }
2848
2849         return 0;
2850 }
2851
2852 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2853                                            struct net_device *dev,
2854                                            struct cfg80211_chan_def *chandef,
2855                                            u32 cac_time_ms)
2856 {
2857         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2858         struct ieee80211_local *local = sdata->local;
2859         int err;
2860
2861         mutex_lock(&local->mtx);
2862         if (!list_empty(&local->roc_list) || local->scanning) {
2863                 err = -EBUSY;
2864                 goto out_unlock;
2865         }
2866
2867         /* whatever, but channel contexts should not complain about that one */
2868         sdata->smps_mode = IEEE80211_SMPS_OFF;
2869         sdata->needed_rx_chains = local->rx_chains;
2870
2871         err = ieee80211_vif_use_channel(sdata, chandef,
2872                                         IEEE80211_CHANCTX_SHARED);
2873         if (err)
2874                 goto out_unlock;
2875
2876         ieee80211_queue_delayed_work(&sdata->local->hw,
2877                                      &sdata->dfs_cac_timer_work,
2878                                      msecs_to_jiffies(cac_time_ms));
2879
2880  out_unlock:
2881         mutex_unlock(&local->mtx);
2882         return err;
2883 }
2884
2885 static struct cfg80211_beacon_data *
2886 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2887 {
2888         struct cfg80211_beacon_data *new_beacon;
2889         u8 *pos;
2890         int len;
2891
2892         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2893               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2894               beacon->probe_resp_len;
2895
2896         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2897         if (!new_beacon)
2898                 return NULL;
2899
2900         pos = (u8 *)(new_beacon + 1);
2901         if (beacon->head_len) {
2902                 new_beacon->head_len = beacon->head_len;
2903                 new_beacon->head = pos;
2904                 memcpy(pos, beacon->head, beacon->head_len);
2905                 pos += beacon->head_len;
2906         }
2907         if (beacon->tail_len) {
2908                 new_beacon->tail_len = beacon->tail_len;
2909                 new_beacon->tail = pos;
2910                 memcpy(pos, beacon->tail, beacon->tail_len);
2911                 pos += beacon->tail_len;
2912         }
2913         if (beacon->beacon_ies_len) {
2914                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2915                 new_beacon->beacon_ies = pos;
2916                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2917                 pos += beacon->beacon_ies_len;
2918         }
2919         if (beacon->proberesp_ies_len) {
2920                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2921                 new_beacon->proberesp_ies = pos;
2922                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2923                 pos += beacon->proberesp_ies_len;
2924         }
2925         if (beacon->assocresp_ies_len) {
2926                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2927                 new_beacon->assocresp_ies = pos;
2928                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2929                 pos += beacon->assocresp_ies_len;
2930         }
2931         if (beacon->probe_resp_len) {
2932                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2933                 new_beacon->probe_resp = pos;
2934                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2935                 pos += beacon->probe_resp_len;
2936         }
2937         if (beacon->ftm_responder)
2938                 new_beacon->ftm_responder = beacon->ftm_responder;
2939         if (beacon->lci) {
2940                 new_beacon->lci_len = beacon->lci_len;
2941                 new_beacon->lci = pos;
2942                 memcpy(pos, beacon->lci, beacon->lci_len);
2943                 pos += beacon->lci_len;
2944         }
2945         if (beacon->civicloc) {
2946                 new_beacon->civicloc_len = beacon->civicloc_len;
2947                 new_beacon->civicloc = pos;
2948                 memcpy(pos, beacon->civicloc, beacon->civicloc_len);
2949                 pos += beacon->civicloc_len;
2950         }
2951
2952         return new_beacon;
2953 }
2954
2955 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2956 {
2957         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2958
2959         ieee80211_queue_work(&sdata->local->hw,
2960                              &sdata->csa_finalize_work);
2961 }
2962 EXPORT_SYMBOL(ieee80211_csa_finish);
2963
2964 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2965                                           u32 *changed)
2966 {
2967         int err;
2968
2969         switch (sdata->vif.type) {
2970         case NL80211_IFTYPE_AP:
2971                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2972                                               NULL);
2973                 kfree(sdata->u.ap.next_beacon);
2974                 sdata->u.ap.next_beacon = NULL;
2975
2976                 if (err < 0)
2977                         return err;
2978                 *changed |= err;
2979                 break;
2980         case NL80211_IFTYPE_ADHOC:
2981                 err = ieee80211_ibss_finish_csa(sdata);
2982                 if (err < 0)
2983                         return err;
2984                 *changed |= err;
2985                 break;
2986 #ifdef CONFIG_MAC80211_MESH
2987         case NL80211_IFTYPE_MESH_POINT:
2988                 err = ieee80211_mesh_finish_csa(sdata);
2989                 if (err < 0)
2990                         return err;
2991                 *changed |= err;
2992                 break;
2993 #endif
2994         default:
2995                 WARN_ON(1);
2996                 return -EINVAL;
2997         }
2998
2999         return 0;
3000 }
3001
3002 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3003 {
3004         struct ieee80211_local *local = sdata->local;
3005         u32 changed = 0;
3006         int err;
3007
3008         sdata_assert_lock(sdata);
3009         lockdep_assert_held(&local->mtx);
3010         lockdep_assert_held(&local->chanctx_mtx);
3011
3012         /*
3013          * using reservation isn't immediate as it may be deferred until later
3014          * with multi-vif. once reservation is complete it will re-schedule the
3015          * work with no reserved_chanctx so verify chandef to check if it
3016          * completed successfully
3017          */
3018
3019         if (sdata->reserved_chanctx) {
3020                 /*
3021                  * with multi-vif csa driver may call ieee80211_csa_finish()
3022                  * many times while waiting for other interfaces to use their
3023                  * reservations
3024                  */
3025                 if (sdata->reserved_ready)
3026                         return 0;
3027
3028                 return ieee80211_vif_use_reserved_context(sdata);
3029         }
3030
3031         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
3032                                         &sdata->csa_chandef))
3033                 return -EINVAL;
3034
3035         sdata->vif.csa_active = false;
3036
3037         err = ieee80211_set_after_csa_beacon(sdata, &changed);
3038         if (err)
3039                 return err;
3040
3041         ieee80211_bss_info_change_notify(sdata, changed);
3042
3043         if (sdata->csa_block_tx) {
3044                 ieee80211_wake_vif_queues(local, sdata,
3045                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3046                 sdata->csa_block_tx = false;
3047         }
3048
3049         err = drv_post_channel_switch(sdata);
3050         if (err)
3051                 return err;
3052
3053         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3054
3055         return 0;
3056 }
3057
3058 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3059 {
3060         if (__ieee80211_csa_finalize(sdata)) {
3061                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3062                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3063                                     GFP_KERNEL);
3064         }
3065 }
3066
3067 void ieee80211_csa_finalize_work(struct work_struct *work)
3068 {
3069         struct ieee80211_sub_if_data *sdata =
3070                 container_of(work, struct ieee80211_sub_if_data,
3071                              csa_finalize_work);
3072         struct ieee80211_local *local = sdata->local;
3073
3074         sdata_lock(sdata);
3075         mutex_lock(&local->mtx);
3076         mutex_lock(&local->chanctx_mtx);
3077
3078         /* AP might have been stopped while waiting for the lock. */
3079         if (!sdata->vif.csa_active)
3080                 goto unlock;
3081
3082         if (!ieee80211_sdata_running(sdata))
3083                 goto unlock;
3084
3085         ieee80211_csa_finalize(sdata);
3086
3087 unlock:
3088         mutex_unlock(&local->chanctx_mtx);
3089         mutex_unlock(&local->mtx);
3090         sdata_unlock(sdata);
3091 }
3092
3093 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3094                                     struct cfg80211_csa_settings *params,
3095                                     u32 *changed)
3096 {
3097         struct ieee80211_csa_settings csa = {};
3098         int err;
3099
3100         switch (sdata->vif.type) {
3101         case NL80211_IFTYPE_AP:
3102                 sdata->u.ap.next_beacon =
3103                         cfg80211_beacon_dup(&params->beacon_after);
3104                 if (!sdata->u.ap.next_beacon)
3105                         return -ENOMEM;
3106
3107                 /*
3108                  * With a count of 0, we don't have to wait for any
3109                  * TBTT before switching, so complete the CSA
3110                  * immediately.  In theory, with a count == 1 we
3111                  * should delay the switch until just before the next
3112                  * TBTT, but that would complicate things so we switch
3113                  * immediately too.  If we would delay the switch
3114                  * until the next TBTT, we would have to set the probe
3115                  * response here.
3116                  *
3117                  * TODO: A channel switch with count <= 1 without
3118                  * sending a CSA action frame is kind of useless,
3119                  * because the clients won't know we're changing
3120                  * channels.  The action frame must be implemented
3121                  * either here or in the userspace.
3122                  */
3123                 if (params->count <= 1)
3124                         break;
3125
3126                 if ((params->n_counter_offsets_beacon >
3127                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3128                     (params->n_counter_offsets_presp >
3129                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3130                         return -EINVAL;
3131
3132                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3133                 csa.counter_offsets_presp = params->counter_offsets_presp;
3134                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3135                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3136                 csa.count = params->count;
3137
3138                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3139                 if (err < 0) {
3140                         kfree(sdata->u.ap.next_beacon);
3141                         return err;
3142                 }
3143                 *changed |= err;
3144
3145                 break;
3146         case NL80211_IFTYPE_ADHOC:
3147                 if (!sdata->vif.bss_conf.ibss_joined)
3148                         return -EINVAL;
3149
3150                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3151                         return -EINVAL;
3152
3153                 switch (params->chandef.width) {
3154                 case NL80211_CHAN_WIDTH_40:
3155                         if (cfg80211_get_chandef_type(&params->chandef) !=
3156                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3157                                 return -EINVAL;
3158                 case NL80211_CHAN_WIDTH_5:
3159                 case NL80211_CHAN_WIDTH_10:
3160                 case NL80211_CHAN_WIDTH_20_NOHT:
3161                 case NL80211_CHAN_WIDTH_20:
3162                         break;
3163                 default:
3164                         return -EINVAL;
3165                 }
3166
3167                 /* changes into another band are not supported */
3168                 if (sdata->u.ibss.chandef.chan->band !=
3169                     params->chandef.chan->band)
3170                         return -EINVAL;
3171
3172                 /* see comments in the NL80211_IFTYPE_AP block */
3173                 if (params->count > 1) {
3174                         err = ieee80211_ibss_csa_beacon(sdata, params);
3175                         if (err < 0)
3176                                 return err;
3177                         *changed |= err;
3178                 }
3179
3180                 ieee80211_send_action_csa(sdata, params);
3181
3182                 break;
3183 #ifdef CONFIG_MAC80211_MESH
3184         case NL80211_IFTYPE_MESH_POINT: {
3185                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3186
3187                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3188                         return -EINVAL;
3189
3190                 /* changes into another band are not supported */
3191                 if (sdata->vif.bss_conf.chandef.chan->band !=
3192                     params->chandef.chan->band)
3193                         return -EINVAL;
3194
3195                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3196                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3197                         if (!ifmsh->pre_value)
3198                                 ifmsh->pre_value = 1;
3199                         else
3200                                 ifmsh->pre_value++;
3201                 }
3202
3203                 /* see comments in the NL80211_IFTYPE_AP block */
3204                 if (params->count > 1) {
3205                         err = ieee80211_mesh_csa_beacon(sdata, params);
3206                         if (err < 0) {
3207                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3208                                 return err;
3209                         }
3210                         *changed |= err;
3211                 }
3212
3213                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3214                         ieee80211_send_action_csa(sdata, params);
3215
3216                 break;
3217                 }
3218 #endif
3219         default:
3220                 return -EOPNOTSUPP;
3221         }
3222
3223         return 0;
3224 }
3225
3226 static int
3227 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3228                            struct cfg80211_csa_settings *params)
3229 {
3230         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3231         struct ieee80211_local *local = sdata->local;
3232         struct ieee80211_channel_switch ch_switch;
3233         struct ieee80211_chanctx_conf *conf;
3234         struct ieee80211_chanctx *chanctx;
3235         u32 changed = 0;
3236         int err;
3237
3238         sdata_assert_lock(sdata);
3239         lockdep_assert_held(&local->mtx);
3240
3241         if (!list_empty(&local->roc_list) || local->scanning)
3242                 return -EBUSY;
3243
3244         if (sdata->wdev.cac_started)
3245                 return -EBUSY;
3246
3247         if (cfg80211_chandef_identical(&params->chandef,
3248                                        &sdata->vif.bss_conf.chandef))
3249                 return -EINVAL;
3250
3251         /* don't allow another channel switch if one is already active. */
3252         if (sdata->vif.csa_active)
3253                 return -EBUSY;
3254
3255         mutex_lock(&local->chanctx_mtx);
3256         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3257                                          lockdep_is_held(&local->chanctx_mtx));
3258         if (!conf) {
3259                 err = -EBUSY;
3260                 goto out;
3261         }
3262
3263         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3264
3265         ch_switch.timestamp = 0;
3266         ch_switch.device_timestamp = 0;
3267         ch_switch.block_tx = params->block_tx;
3268         ch_switch.chandef = params->chandef;
3269         ch_switch.count = params->count;
3270
3271         err = drv_pre_channel_switch(sdata, &ch_switch);
3272         if (err)
3273                 goto out;
3274
3275         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3276                                             chanctx->mode,
3277                                             params->radar_required);
3278         if (err)
3279                 goto out;
3280
3281         /* if reservation is invalid then this will fail */
3282         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3283         if (err) {
3284                 ieee80211_vif_unreserve_chanctx(sdata);
3285                 goto out;
3286         }
3287
3288         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3289         if (err) {
3290                 ieee80211_vif_unreserve_chanctx(sdata);
3291                 goto out;
3292         }
3293
3294         sdata->csa_chandef = params->chandef;
3295         sdata->csa_block_tx = params->block_tx;
3296         sdata->vif.csa_active = true;
3297
3298         if (sdata->csa_block_tx)
3299                 ieee80211_stop_vif_queues(local, sdata,
3300                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3301
3302         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3303                                           params->count);
3304
3305         if (changed) {
3306                 ieee80211_bss_info_change_notify(sdata, changed);
3307                 drv_channel_switch_beacon(sdata, &params->chandef);
3308         } else {
3309                 /* if the beacon didn't change, we can finalize immediately */
3310                 ieee80211_csa_finalize(sdata);
3311         }
3312
3313 out:
3314         mutex_unlock(&local->chanctx_mtx);
3315         return err;
3316 }
3317
3318 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3319                              struct cfg80211_csa_settings *params)
3320 {
3321         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3322         struct ieee80211_local *local = sdata->local;
3323         int err;
3324
3325         mutex_lock(&local->mtx);
3326         err = __ieee80211_channel_switch(wiphy, dev, params);
3327         mutex_unlock(&local->mtx);
3328
3329         return err;
3330 }
3331
3332 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3333 {
3334         lockdep_assert_held(&local->mtx);
3335
3336         local->roc_cookie_counter++;
3337
3338         /* wow, you wrapped 64 bits ... more likely a bug */
3339         if (WARN_ON(local->roc_cookie_counter == 0))
3340                 local->roc_cookie_counter++;
3341
3342         return local->roc_cookie_counter;
3343 }
3344
3345 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3346                              u64 *cookie, gfp_t gfp)
3347 {
3348         unsigned long spin_flags;
3349         struct sk_buff *ack_skb;
3350         int id;
3351
3352         ack_skb = skb_copy(skb, gfp);
3353         if (!ack_skb)
3354                 return -ENOMEM;
3355
3356         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3357         id = idr_alloc(&local->ack_status_frames, ack_skb,
3358                        1, 0x10000, GFP_ATOMIC);
3359         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3360
3361         if (id < 0) {
3362                 kfree_skb(ack_skb);
3363                 return -ENOMEM;
3364         }
3365
3366         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3367
3368         *cookie = ieee80211_mgmt_tx_cookie(local);
3369         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3370
3371         return 0;
3372 }
3373
3374 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3375                                           struct wireless_dev *wdev,
3376                                           u16 frame_type, bool reg)
3377 {
3378         struct ieee80211_local *local = wiphy_priv(wiphy);
3379         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3380
3381         switch (frame_type) {
3382         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3383                 if (reg) {
3384                         local->probe_req_reg++;
3385                         sdata->vif.probe_req_reg++;
3386                 } else {
3387                         if (local->probe_req_reg)
3388                                 local->probe_req_reg--;
3389
3390                         if (sdata->vif.probe_req_reg)
3391                                 sdata->vif.probe_req_reg--;
3392                 }
3393
3394                 if (!local->open_count)
3395                         break;
3396
3397                 if (sdata->vif.probe_req_reg == 1)
3398                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3399                                                 FIF_PROBE_REQ);
3400                 else if (sdata->vif.probe_req_reg == 0)
3401                         drv_config_iface_filter(local, sdata, 0,
3402                                                 FIF_PROBE_REQ);
3403
3404                 ieee80211_configure_filter(local);
3405                 break;
3406         default:
3407                 break;
3408         }
3409 }
3410
3411 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3412 {
3413         struct ieee80211_local *local = wiphy_priv(wiphy);
3414
3415         if (local->started)
3416                 return -EOPNOTSUPP;
3417
3418         return drv_set_antenna(local, tx_ant, rx_ant);
3419 }
3420
3421 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3422 {
3423         struct ieee80211_local *local = wiphy_priv(wiphy);
3424
3425         return drv_get_antenna(local, tx_ant, rx_ant);
3426 }
3427
3428 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3429                                     struct net_device *dev,
3430                                     struct cfg80211_gtk_rekey_data *data)
3431 {
3432         struct ieee80211_local *local = wiphy_priv(wiphy);
3433         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3434
3435         if (!local->ops->set_rekey_data)
3436                 return -EOPNOTSUPP;
3437
3438         drv_set_rekey_data(local, sdata, data);
3439
3440         return 0;
3441 }
3442
3443 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3444                                   const u8 *peer, u64 *cookie)
3445 {
3446         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3447         struct ieee80211_local *local = sdata->local;
3448         struct ieee80211_qos_hdr *nullfunc;
3449         struct sk_buff *skb;
3450         int size = sizeof(*nullfunc);
3451         __le16 fc;
3452         bool qos;
3453         struct ieee80211_tx_info *info;
3454         struct sta_info *sta;
3455         struct ieee80211_chanctx_conf *chanctx_conf;
3456         enum nl80211_band band;
3457         int ret;
3458
3459         /* the lock is needed to assign the cookie later */
3460         mutex_lock(&local->mtx);
3461
3462         rcu_read_lock();
3463         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3464         if (WARN_ON(!chanctx_conf)) {
3465                 ret = -EINVAL;
3466                 goto unlock;
3467         }
3468         band = chanctx_conf->def.chan->band;
3469         sta = sta_info_get_bss(sdata, peer);
3470         if (sta) {
3471                 qos = sta->sta.wme;
3472         } else {
3473                 ret = -ENOLINK;
3474                 goto unlock;
3475         }
3476
3477         if (qos) {
3478                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3479                                  IEEE80211_STYPE_QOS_NULLFUNC |
3480                                  IEEE80211_FCTL_FROMDS);
3481         } else {
3482                 size -= 2;
3483                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3484                                  IEEE80211_STYPE_NULLFUNC |
3485                                  IEEE80211_FCTL_FROMDS);
3486         }
3487
3488         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3489         if (!skb) {
3490                 ret = -ENOMEM;
3491                 goto unlock;
3492         }
3493
3494         skb->dev = dev;
3495
3496         skb_reserve(skb, local->hw.extra_tx_headroom);
3497
3498         nullfunc = skb_put(skb, size);
3499         nullfunc->frame_control = fc;
3500         nullfunc->duration_id = 0;
3501         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3502         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3503         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3504         nullfunc->seq_ctrl = 0;
3505
3506         info = IEEE80211_SKB_CB(skb);
3507
3508         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3509                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3510         info->band = band;
3511
3512         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3513         skb->priority = 7;
3514         if (qos)
3515                 nullfunc->qos_ctrl = cpu_to_le16(7);
3516
3517         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3518         if (ret) {
3519                 kfree_skb(skb);
3520                 goto unlock;
3521         }
3522
3523         local_bh_disable();
3524         ieee80211_xmit(sdata, sta, skb, 0);
3525         local_bh_enable();
3526
3527         ret = 0;
3528 unlock:
3529         rcu_read_unlock();
3530         mutex_unlock(&local->mtx);
3531
3532         return ret;
3533 }
3534
3535 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3536                                      struct wireless_dev *wdev,
3537                                      struct cfg80211_chan_def *chandef)
3538 {
3539         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3540         struct ieee80211_local *local = wiphy_priv(wiphy);
3541         struct ieee80211_chanctx_conf *chanctx_conf;
3542         int ret = -ENODATA;
3543
3544         rcu_read_lock();
3545         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3546         if (chanctx_conf) {
3547                 *chandef = sdata->vif.bss_conf.chandef;
3548                 ret = 0;
3549         } else if (local->open_count > 0 &&
3550                    local->open_count == local->monitors &&
3551                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3552                 if (local->use_chanctx)
3553                         *chandef = local->monitor_chandef;
3554                 else
3555                         *chandef = local->_oper_chandef;
3556                 ret = 0;
3557         }
3558         rcu_read_unlock();
3559
3560         return ret;
3561 }
3562
3563 #ifdef CONFIG_PM
3564 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3565 {
3566         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3567 }
3568 #endif
3569
3570 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3571                                  struct net_device *dev,
3572                                  struct cfg80211_qos_map *qos_map)
3573 {
3574         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3575         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3576
3577         if (qos_map) {
3578                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3579                 if (!new_qos_map)
3580                         return -ENOMEM;
3581                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3582         } else {
3583                 /* A NULL qos_map was passed to disable QoS mapping */
3584                 new_qos_map = NULL;
3585         }
3586
3587         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3588         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3589         if (old_qos_map)
3590                 kfree_rcu(old_qos_map, rcu_head);
3591
3592         return 0;
3593 }
3594
3595 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3596                                       struct net_device *dev,
3597                                       struct cfg80211_chan_def *chandef)
3598 {
3599         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3600         int ret;
3601         u32 changed = 0;
3602
3603         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3604         if (ret == 0)
3605                 ieee80211_bss_info_change_notify(sdata, changed);
3606
3607         return ret;
3608 }
3609
3610 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3611                                u8 tsid, const u8 *peer, u8 up,
3612                                u16 admitted_time)
3613 {
3614         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3615         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3616         int ac = ieee802_1d_to_ac[up];
3617
3618         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3619                 return -EOPNOTSUPP;
3620
3621         if (!(sdata->wmm_acm & BIT(up)))
3622                 return -EINVAL;
3623
3624         if (ifmgd->tx_tspec[ac].admitted_time)
3625                 return -EBUSY;
3626
3627         if (admitted_time) {
3628                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3629                 ifmgd->tx_tspec[ac].tsid = tsid;
3630                 ifmgd->tx_tspec[ac].up = up;
3631         }
3632
3633         return 0;
3634 }
3635
3636 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3637                                u8 tsid, const u8 *peer)
3638 {
3639         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3640         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3641         struct ieee80211_local *local = wiphy_priv(wiphy);
3642         int ac;
3643
3644         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3645                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3646
3647                 /* skip unused entries */
3648                 if (!tx_tspec->admitted_time)
3649                         continue;
3650
3651                 if (tx_tspec->tsid != tsid)
3652                         continue;
3653
3654                 /* due to this new packets will be reassigned to non-ACM ACs */
3655                 tx_tspec->up = -1;
3656
3657                 /* Make sure that all packets have been sent to avoid to
3658                  * restore the QoS params on packets that are still on the
3659                  * queues.
3660                  */
3661                 synchronize_net();
3662                 ieee80211_flush_queues(local, sdata, false);
3663
3664                 /* restore the normal QoS parameters
3665                  * (unconditionally to avoid races)
3666                  */
3667                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3668                 tx_tspec->downgraded = false;
3669                 ieee80211_sta_handle_tspec_ac_params(sdata);
3670
3671                 /* finally clear all the data */
3672                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3673
3674                 return 0;
3675         }
3676
3677         return -ENOENT;
3678 }
3679
3680 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
3681                                    u8 inst_id,
3682                                    enum nl80211_nan_func_term_reason reason,
3683                                    gfp_t gfp)
3684 {
3685         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3686         struct cfg80211_nan_func *func;
3687         u64 cookie;
3688
3689         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3690                 return;
3691
3692         spin_lock_bh(&sdata->u.nan.func_lock);
3693
3694         func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
3695         if (WARN_ON(!func)) {
3696                 spin_unlock_bh(&sdata->u.nan.func_lock);
3697                 return;
3698         }
3699
3700         cookie = func->cookie;
3701         idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
3702
3703         spin_unlock_bh(&sdata->u.nan.func_lock);
3704
3705         cfg80211_free_nan_func(func);
3706
3707         cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
3708                                      reason, cookie, gfp);
3709 }
3710 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
3711
3712 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
3713                               struct cfg80211_nan_match_params *match,
3714                               gfp_t gfp)
3715 {
3716         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3717         struct cfg80211_nan_func *func;
3718
3719         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3720                 return;
3721
3722         spin_lock_bh(&sdata->u.nan.func_lock);
3723
3724         func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
3725         if (WARN_ON(!func)) {
3726                 spin_unlock_bh(&sdata->u.nan.func_lock);
3727                 return;
3728         }
3729         match->cookie = func->cookie;
3730
3731         spin_unlock_bh(&sdata->u.nan.func_lock);
3732
3733         cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
3734 }
3735 EXPORT_SYMBOL(ieee80211_nan_func_match);
3736
3737 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
3738                                               struct net_device *dev,
3739                                               const bool enabled)
3740 {
3741         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3742
3743         sdata->u.ap.multicast_to_unicast = enabled;
3744
3745         return 0;
3746 }
3747
3748 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
3749                               struct txq_info *txqi)
3750 {
3751         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) {
3752                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES);
3753                 txqstats->backlog_bytes = txqi->tin.backlog_bytes;
3754         }
3755
3756         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) {
3757                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS);
3758                 txqstats->backlog_packets = txqi->tin.backlog_packets;
3759         }
3760
3761         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) {
3762                 txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS);
3763                 txqstats->flows = txqi->tin.flows;
3764         }
3765
3766         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) {
3767                 txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS);
3768                 txqstats->drops = txqi->cstats.drop_count;
3769         }
3770
3771         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) {
3772                 txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS);
3773                 txqstats->ecn_marks = txqi->cstats.ecn_mark;
3774         }
3775
3776         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) {
3777                 txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT);
3778                 txqstats->overlimit = txqi->tin.overlimit;
3779         }
3780
3781         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) {
3782                 txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS);
3783                 txqstats->collisions = txqi->tin.collisions;
3784         }
3785
3786         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) {
3787                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES);
3788                 txqstats->tx_bytes = txqi->tin.tx_bytes;
3789         }
3790
3791         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) {
3792                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS);
3793                 txqstats->tx_packets = txqi->tin.tx_packets;
3794         }
3795 }
3796
3797 static int ieee80211_get_txq_stats(struct wiphy *wiphy,
3798                                    struct wireless_dev *wdev,
3799                                    struct cfg80211_txq_stats *txqstats)
3800 {
3801         struct ieee80211_local *local = wiphy_priv(wiphy);
3802         struct ieee80211_sub_if_data *sdata;
3803         int ret = 0;
3804
3805         if (!local->ops->wake_tx_queue)
3806                 return 1;
3807
3808         spin_lock_bh(&local->fq.lock);
3809         rcu_read_lock();
3810
3811         if (wdev) {
3812                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3813                 if (!sdata->vif.txq) {
3814                         ret = 1;
3815                         goto out;
3816                 }
3817                 ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq));
3818         } else {
3819                 /* phy stats */
3820                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) |
3821                                     BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) |
3822                                     BIT(NL80211_TXQ_STATS_OVERLIMIT) |
3823                                     BIT(NL80211_TXQ_STATS_OVERMEMORY) |
3824                                     BIT(NL80211_TXQ_STATS_COLLISIONS) |
3825                                     BIT(NL80211_TXQ_STATS_MAX_FLOWS);
3826                 txqstats->backlog_packets = local->fq.backlog;
3827                 txqstats->backlog_bytes = local->fq.memory_usage;
3828                 txqstats->overlimit = local->fq.overlimit;
3829                 txqstats->overmemory = local->fq.overmemory;
3830                 txqstats->collisions = local->fq.collisions;
3831                 txqstats->max_flows = local->fq.flows_cnt;
3832         }
3833
3834 out:
3835         rcu_read_unlock();
3836         spin_unlock_bh(&local->fq.lock);
3837
3838         return ret;
3839 }
3840
3841 static int
3842 ieee80211_get_ftm_responder_stats(struct wiphy *wiphy,
3843                                   struct net_device *dev,
3844                                   struct cfg80211_ftm_responder_stats *ftm_stats)
3845 {
3846         struct ieee80211_local *local = wiphy_priv(wiphy);
3847         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3848
3849         return drv_get_ftm_responder_stats(local, sdata, ftm_stats);
3850 }
3851
3852 const struct cfg80211_ops mac80211_config_ops = {
3853         .add_virtual_intf = ieee80211_add_iface,
3854         .del_virtual_intf = ieee80211_del_iface,
3855         .change_virtual_intf = ieee80211_change_iface,
3856         .start_p2p_device = ieee80211_start_p2p_device,
3857         .stop_p2p_device = ieee80211_stop_p2p_device,
3858         .add_key = ieee80211_add_key,
3859         .del_key = ieee80211_del_key,
3860         .get_key = ieee80211_get_key,
3861         .set_default_key = ieee80211_config_default_key,
3862         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3863         .start_ap = ieee80211_start_ap,
3864         .change_beacon = ieee80211_change_beacon,
3865         .stop_ap = ieee80211_stop_ap,
3866         .add_station = ieee80211_add_station,
3867         .del_station = ieee80211_del_station,
3868         .change_station = ieee80211_change_station,
3869         .get_station = ieee80211_get_station,
3870         .dump_station = ieee80211_dump_station,
3871         .dump_survey = ieee80211_dump_survey,
3872 #ifdef CONFIG_MAC80211_MESH
3873         .add_mpath = ieee80211_add_mpath,
3874         .del_mpath = ieee80211_del_mpath,
3875         .change_mpath = ieee80211_change_mpath,
3876         .get_mpath = ieee80211_get_mpath,
3877         .dump_mpath = ieee80211_dump_mpath,
3878         .get_mpp = ieee80211_get_mpp,
3879         .dump_mpp = ieee80211_dump_mpp,
3880         .update_mesh_config = ieee80211_update_mesh_config,
3881         .get_mesh_config = ieee80211_get_mesh_config,
3882         .join_mesh = ieee80211_join_mesh,
3883         .leave_mesh = ieee80211_leave_mesh,
3884 #endif
3885         .join_ocb = ieee80211_join_ocb,
3886         .leave_ocb = ieee80211_leave_ocb,
3887         .change_bss = ieee80211_change_bss,
3888         .set_txq_params = ieee80211_set_txq_params,
3889         .set_monitor_channel = ieee80211_set_monitor_channel,
3890         .suspend = ieee80211_suspend,
3891         .resume = ieee80211_resume,
3892         .scan = ieee80211_scan,
3893         .abort_scan = ieee80211_abort_scan,
3894         .sched_scan_start = ieee80211_sched_scan_start,
3895         .sched_scan_stop = ieee80211_sched_scan_stop,
3896         .auth = ieee80211_auth,
3897         .assoc = ieee80211_assoc,
3898         .deauth = ieee80211_deauth,
3899         .disassoc = ieee80211_disassoc,
3900         .join_ibss = ieee80211_join_ibss,
3901         .leave_ibss = ieee80211_leave_ibss,
3902         .set_mcast_rate = ieee80211_set_mcast_rate,
3903         .set_wiphy_params = ieee80211_set_wiphy_params,
3904         .set_tx_power = ieee80211_set_tx_power,
3905         .get_tx_power = ieee80211_get_tx_power,
3906         .set_wds_peer = ieee80211_set_wds_peer,
3907         .rfkill_poll = ieee80211_rfkill_poll,
3908         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3909         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3910         .set_power_mgmt = ieee80211_set_power_mgmt,
3911         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3912         .remain_on_channel = ieee80211_remain_on_channel,
3913         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3914         .mgmt_tx = ieee80211_mgmt_tx,
3915         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3916         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3917         .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
3918         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3919         .set_antenna = ieee80211_set_antenna,
3920         .get_antenna = ieee80211_get_antenna,
3921         .set_rekey_data = ieee80211_set_rekey_data,
3922         .tdls_oper = ieee80211_tdls_oper,
3923         .tdls_mgmt = ieee80211_tdls_mgmt,
3924         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3925         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3926         .probe_client = ieee80211_probe_client,
3927         .set_noack_map = ieee80211_set_noack_map,
3928 #ifdef CONFIG_PM
3929         .set_wakeup = ieee80211_set_wakeup,
3930 #endif
3931         .get_channel = ieee80211_cfg_get_channel,
3932         .start_radar_detection = ieee80211_start_radar_detection,
3933         .channel_switch = ieee80211_channel_switch,
3934         .set_qos_map = ieee80211_set_qos_map,
3935         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3936         .add_tx_ts = ieee80211_add_tx_ts,
3937         .del_tx_ts = ieee80211_del_tx_ts,
3938         .start_nan = ieee80211_start_nan,
3939         .stop_nan = ieee80211_stop_nan,
3940         .nan_change_conf = ieee80211_nan_change_conf,
3941         .add_nan_func = ieee80211_add_nan_func,
3942         .del_nan_func = ieee80211_del_nan_func,
3943         .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
3944         .tx_control_port = ieee80211_tx_control_port,
3945         .get_txq_stats = ieee80211_get_txq_stats,
3946         .get_ftm_responder_stats = ieee80211_get_ftm_responder_stats,
3947 };