net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  *
   7  * This file is GPLv2 as found in COPYING.
   8  */
   9
  10 #include <linux/ieee80211.h>
  11 #include <linux/nl80211.h>
  12 #include <linux/rtnetlink.h>
  13 #include <linux/slab.h>
  14 #include <net/net_namespace.h>
  15 #include <linux/rcupdate.h>
  16 #include <linux/if_ether.h>
  17 #include <net/cfg80211.h>
  18 #include "ieee80211_i.h"
  19 #include "driver-ops.h"
  20 #include "cfg.h"
  21 #include "rate.h"
  22 #include "mesh.h"
  23
  24 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  25                                                 const char *name,
  26                                                 enum nl80211_iftype type,
  27                                                 u32 *flags,
  28                                                 struct vif_params *params)
  29 {
  30         struct ieee80211_local *local = wiphy_priv(wiphy);
  31         struct wireless_dev *wdev;
  32         struct ieee80211_sub_if_data *sdata;
  33         int err;
  34
  35         err = ieee80211_if_add(local, name, &wdev, type, params);
  36         if (err)
  37                 return ERR_PTR(err);
  38
  39         if (type == NL80211_IFTYPE_MONITOR && flags) {
  40                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  41                 sdata->u.mntr_flags = *flags;
  42         }
  43
  44         return wdev;
  45 }
  46
  47 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  48 {
  49         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  50
  51         return 0;
  52 }
  53
  54 static int ieee80211_change_iface(struct wiphy *wiphy,
  55                                   struct net_device *dev,
  56                                   enum nl80211_iftype type, u32 *flags,
  57                                   struct vif_params *params)
  58 {
  59         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  60         int ret;
  61
  62         ret = ieee80211_if_change_type(sdata, type);
  63         if (ret)
  64                 return ret;
  65
  66         if (type == NL80211_IFTYPE_AP_VLAN &&
  67             params && params->use_4addr == 0)
  68                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  69         else if (type == NL80211_IFTYPE_STATION &&
  70                  params && params->use_4addr >= 0)
  71                 sdata->u.mgd.use_4addr = params->use_4addr;
  72
  73         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  74                 struct ieee80211_local *local = sdata->local;
  75
  76                 if (ieee80211_sdata_running(sdata)) {
  77                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
  78                                    MONITOR_FLAG_ACTIVE;
  79
  80                         /*
  81                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
  82                          * MONITOR_FLAG_ACTIVE to be changed while the
  83                          * interface is up.
  84                          * Else we would need to add a lot of cruft
  85                          * to update everything:
  86                          *      cooked_mntrs, monitor and all fif_* counters
  87                          *      reconfigure hardware
  88                          */
  89                         if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  90                                 return -EBUSY;
  91
  92                         ieee80211_adjust_monitor_flags(sdata, -1);
  93                         sdata->u.mntr_flags = *flags;
  94                         ieee80211_adjust_monitor_flags(sdata, 1);
  95
  96                         ieee80211_configure_filter(local);
  97                 } else {
  98                         /*
  99                          * Because the interface is down, ieee80211_do_stop
 100                          * and ieee80211_do_open take care of "everything"
 101                          * mentioned in the comment above.
 102                          */
 103                         sdata->u.mntr_flags = *flags;
 104                 }
 105         }
 106
 107         return 0;
 108 }
 109
 110 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 111                                       struct wireless_dev *wdev)
 112 {
 113         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 114         int ret;
 115
 116         mutex_lock(&sdata->local->chanctx_mtx);
 117         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 118         mutex_unlock(&sdata->local->chanctx_mtx);
 119         if (ret < 0)
 120                 return ret;
 121
 122         return ieee80211_do_open(wdev, true);
 123 }
 124
 125 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 126                                       struct wireless_dev *wdev)
 127 {
 128         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 129 }
 130
 131 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 132                                   struct net_device *dev,
 133                                   u16 noack_map)
 134 {
 135         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 136
 137         sdata->noack_map = noack_map;
 138         return 0;
 139 }
 140
 141 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 142                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 143                              struct key_params *params)
 144 {
 145         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 146         struct ieee80211_local *local = sdata->local;
 147         struct sta_info *sta = NULL;
 148         const struct ieee80211_cipher_scheme *cs = NULL;
 149         struct ieee80211_key *key;
 150         int err;
 151
 152         if (!ieee80211_sdata_running(sdata))
 153                 return -ENETDOWN;
 154
 155         /* reject WEP and TKIP keys if WEP failed to initialize */
 156         switch (params->cipher) {
 157         case WLAN_CIPHER_SUITE_WEP40:
 158         case WLAN_CIPHER_SUITE_TKIP:
 159         case WLAN_CIPHER_SUITE_WEP104:
 160                 if (IS_ERR(local->wep_tx_tfm))
 161                         return -EINVAL;
 162                 break;
 163         case WLAN_CIPHER_SUITE_CCMP:
 164         case WLAN_CIPHER_SUITE_AES_CMAC:
 165         case WLAN_CIPHER_SUITE_GCMP:
 166                 break;
 167         default:
 168                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 169                 break;
 170         }
 171
 172         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 173                                   params->key, params->seq_len, params->seq,
 174                                   cs);
 175         if (IS_ERR(key))
 176                 return PTR_ERR(key);
 177
 178         if (pairwise)
 179                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 180
 181         mutex_lock(&local->sta_mtx);
 182
 183         if (mac_addr) {
 184                 if (ieee80211_vif_is_mesh(&sdata->vif))
 185                         sta = sta_info_get(sdata, mac_addr);
 186                 else
 187                         sta = sta_info_get_bss(sdata, mac_addr);
 188                 /*
 189                  * The ASSOC test makes sure the driver is ready to
 190                  * receive the key. When wpa_supplicant has roamed
 191                  * using FT, it attempts to set the key before
 192                  * association has completed, this rejects that attempt
 193                  * so it will set the key again after assocation.
 194                  *
 195                  * TODO: accept the key if we have a station entry and
 196                  *       add it to the device after the station.
 197                  */
 198                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 199                         ieee80211_key_free_unused(key);
 200                         err = -ENOENT;
 201                         goto out_unlock;
 202                 }
 203         }
 204
 205         switch (sdata->vif.type) {
 206         case NL80211_IFTYPE_STATION:
 207                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 208                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 209                 break;
 210         case NL80211_IFTYPE_AP:
 211         case NL80211_IFTYPE_AP_VLAN:
 212                 /* Keys without a station are used for TX only */
 213                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 214                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 215                 break;
 216         case NL80211_IFTYPE_ADHOC:
 217                 /* no MFP (yet) */
 218                 break;
 219         case NL80211_IFTYPE_MESH_POINT:
 220 #ifdef CONFIG_MAC80211_MESH
 221                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 222                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 223                 break;
 224 #endif
 225         case NL80211_IFTYPE_WDS:
 226         case NL80211_IFTYPE_MONITOR:
 227         case NL80211_IFTYPE_P2P_DEVICE:
 228         case NL80211_IFTYPE_UNSPECIFIED:
 229         case NUM_NL80211_IFTYPES:
 230         case NL80211_IFTYPE_P2P_CLIENT:
 231         case NL80211_IFTYPE_P2P_GO:
 232                 /* shouldn't happen */
 233                 WARN_ON_ONCE(1);
 234                 break;
 235         }
 236
 237         if (sta)
 238                 sta->cipher_scheme = cs;
 239
 240         err = ieee80211_key_link(key, sdata, sta);
 241
 242  out_unlock:
 243         mutex_unlock(&local->sta_mtx);
 244
 245         return err;
 246 }
 247
 248 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 249                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 250 {
 251         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 252         struct ieee80211_local *local = sdata->local;
 253         struct sta_info *sta;
 254         struct ieee80211_key *key = NULL;
 255         int ret;
 256
 257         mutex_lock(&local->sta_mtx);
 258         mutex_lock(&local->key_mtx);
 259
 260         if (mac_addr) {
 261                 ret = -ENOENT;
 262
 263                 sta = sta_info_get_bss(sdata, mac_addr);
 264                 if (!sta)
 265                         goto out_unlock;
 266
 267                 if (pairwise)
 268                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 269                 else
 270                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 271         } else
 272                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 273
 274         if (!key) {
 275                 ret = -ENOENT;
 276                 goto out_unlock;
 277         }
 278
 279         ieee80211_key_free(key, true);
 280
 281         ret = 0;
 282  out_unlock:
 283         mutex_unlock(&local->key_mtx);
 284         mutex_unlock(&local->sta_mtx);
 285
 286         return ret;
 287 }
 288
 289 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 290                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 291                              void *cookie,
 292                              void (*callback)(void *cookie,
 293                                               struct key_params *params))
 294 {
 295         struct ieee80211_sub_if_data *sdata;
 296         struct sta_info *sta = NULL;
 297         u8 seq[6] = {0};
 298         struct key_params params;
 299         struct ieee80211_key *key = NULL;
 300         u64 pn64;
 301         u32 iv32;
 302         u16 iv16;
 303         int err = -ENOENT;
 304
 305         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 306
 307         rcu_read_lock();
 308
 309         if (mac_addr) {
 310                 sta = sta_info_get_bss(sdata, mac_addr);
 311                 if (!sta)
 312                         goto out;
 313
 314                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 315                         key = rcu_dereference(sta->ptk[key_idx]);
 316                 else if (!pairwise &&
 317                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 318                         key = rcu_dereference(sta->gtk[key_idx]);
 319         } else
 320                 key = rcu_dereference(sdata->keys[key_idx]);
 321
 322         if (!key)
 323                 goto out;
 324
 325         memset(&params, 0, sizeof(params));
 326
 327         params.cipher = key->conf.cipher;
 328
 329         switch (key->conf.cipher) {
 330         case WLAN_CIPHER_SUITE_TKIP:
 331                 iv32 = key->u.tkip.tx.iv32;
 332                 iv16 = key->u.tkip.tx.iv16;
 333
 334                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 335                         drv_get_tkip_seq(sdata->local,
 336                                          key->conf.hw_key_idx,
 337                                          &iv32, &iv16);
 338
 339                 seq[0] = iv16 & 0xff;
 340                 seq[1] = (iv16 >> 8) & 0xff;
 341                 seq[2] = iv32 & 0xff;
 342                 seq[3] = (iv32 >> 8) & 0xff;
 343                 seq[4] = (iv32 >> 16) & 0xff;
 344                 seq[5] = (iv32 >> 24) & 0xff;
 345                 params.seq = seq;
 346                 params.seq_len = 6;
 347                 break;
 348         case WLAN_CIPHER_SUITE_CCMP:
 349                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 350                 seq[0] = pn64;
 351                 seq[1] = pn64 >> 8;
 352                 seq[2] = pn64 >> 16;
 353                 seq[3] = pn64 >> 24;
 354                 seq[4] = pn64 >> 32;
 355                 seq[5] = pn64 >> 40;
 356                 params.seq = seq;
 357                 params.seq_len = 6;
 358                 break;
 359         case WLAN_CIPHER_SUITE_AES_CMAC:
 360                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 361                 seq[0] = pn64;
 362                 seq[1] = pn64 >> 8;
 363                 seq[2] = pn64 >> 16;
 364                 seq[3] = pn64 >> 24;
 365                 seq[4] = pn64 >> 32;
 366                 seq[5] = pn64 >> 40;
 367                 params.seq = seq;
 368                 params.seq_len = 6;
 369                 break;
 370         }
 371
 372         params.key = key->conf.key;
 373         params.key_len = key->conf.keylen;
 374
 375         callback(cookie, &params);
 376         err = 0;
 377
 378  out:
 379         rcu_read_unlock();
 380         return err;
 381 }
 382
 383 static int ieee80211_config_default_key(struct wiphy *wiphy,
 384                                         struct net_device *dev,
 385                                         u8 key_idx, bool uni,
 386                                         bool multi)
 387 {
 388         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 389
 390         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 391
 392         return 0;
 393 }
 394
 395 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 396                                              struct net_device *dev,
 397                                              u8 key_idx)
 398 {
 399         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 400
 401         ieee80211_set_default_mgmt_key(sdata, key_idx);
 402
 403         return 0;
 404 }
 405
 406 void sta_set_rate_info_tx(struct sta_info *sta,
 407                           const struct ieee80211_tx_rate *rate,
 408                           struct rate_info *rinfo)
 409 {
 410         rinfo->flags = 0;
 411         if (rate->flags & IEEE80211_TX_RC_MCS) {
 412                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 413                 rinfo->mcs = rate->idx;
 414         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 415                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 416                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 417                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 418         } else {
 419                 struct ieee80211_supported_band *sband;
 420                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 421                 u16 brate;
 422
 423                 sband = sta->local->hw.wiphy->bands[
 424                                 ieee80211_get_sdata_band(sta->sdata)];
 425                 brate = sband->bitrates[rate->idx].bitrate;
 426                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 427         }
 428         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 429                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 430         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 431                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 432         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 433                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 434         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 435                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 436 }
 437
 438 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 439 {
 440         rinfo->flags = 0;
 441
 442         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 443                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 444                 rinfo->mcs = sta->last_rx_rate_idx;
 445         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 446                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 447                 rinfo->nss = sta->last_rx_rate_vht_nss;
 448                 rinfo->mcs = sta->last_rx_rate_idx;
 449         } else {
 450                 struct ieee80211_supported_band *sband;
 451                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 452                 u16 brate;
 453
 454                 sband = sta->local->hw.wiphy->bands[
 455                                 ieee80211_get_sdata_band(sta->sdata)];
 456                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 457                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 458         }
 459
 460         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 461                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 462         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 463                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 464         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
 465                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 466         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80P80MHZ)
 467                 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
 468         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
 469                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 470 }
 471
 472 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 473                                   int idx, u8 *mac, struct station_info *sinfo)
 474 {
 475         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 476         struct ieee80211_local *local = sdata->local;
 477         struct sta_info *sta;
 478         int ret = -ENOENT;
 479
 480         mutex_lock(&local->sta_mtx);
 481
 482         sta = sta_info_get_by_idx(sdata, idx);
 483         if (sta) {
 484                 ret = 0;
 485                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 486                 sta_set_sinfo(sta, sinfo);
 487         }
 488
 489         mutex_unlock(&local->sta_mtx);
 490
 491         return ret;
 492 }
 493
 494 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 495                                  int idx, struct survey_info *survey)
 496 {
 497         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 498
 499         return drv_get_survey(local, idx, survey);
 500 }
 501
 502 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 503                                  const u8 *mac, struct station_info *sinfo)
 504 {
 505         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 506         struct ieee80211_local *local = sdata->local;
 507         struct sta_info *sta;
 508         int ret = -ENOENT;
 509
 510         mutex_lock(&local->sta_mtx);
 511
 512         sta = sta_info_get_bss(sdata, mac);
 513         if (sta) {
 514                 ret = 0;
 515                 sta_set_sinfo(sta, sinfo);
 516         }
 517
 518         mutex_unlock(&local->sta_mtx);
 519
 520         return ret;
 521 }
 522
 523 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 524                                          struct cfg80211_chan_def *chandef)
 525 {
 526         struct ieee80211_local *local = wiphy_priv(wiphy);
 527         struct ieee80211_sub_if_data *sdata;
 528         int ret = 0;
 529
 530         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 531                 return 0;
 532
 533         mutex_lock(&local->mtx);
 534         mutex_lock(&local->iflist_mtx);
 535         if (local->use_chanctx) {
 536                 sdata = rcu_dereference_protected(
 537                                 local->monitor_sdata,
 538                                 lockdep_is_held(&local->iflist_mtx));
 539                 if (sdata) {
 540                         ieee80211_vif_release_channel(sdata);
 541                         ret = ieee80211_vif_use_channel(sdata, chandef,
 542                                         IEEE80211_CHANCTX_EXCLUSIVE);
 543                 }
 544         } else if (local->open_count == local->monitors) {
 545                 local->_oper_chandef = *chandef;
 546                 ieee80211_hw_config(local, 0);
 547         }
 548
 549         if (ret == 0)
 550                 local->monitor_chandef = *chandef;
 551         mutex_unlock(&local->iflist_mtx);
 552         mutex_unlock(&local->mtx);
 553
 554         return ret;
 555 }
 556
 557 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 558                                     const u8 *resp, size_t resp_len,
 559                                     const struct ieee80211_csa_settings *csa)
 560 {
 561         struct probe_resp *new, *old;
 562
 563         if (!resp || !resp_len)
 564                 return 1;
 565
 566         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 567
 568         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 569         if (!new)
 570                 return -ENOMEM;
 571
 572         new->len = resp_len;
 573         memcpy(new->data, resp, resp_len);
 574
 575         if (csa)
 576                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 577                        csa->n_counter_offsets_presp *
 578                        sizeof(new->csa_counter_offsets[0]));
 579
 580         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 581         if (old)
 582                 kfree_rcu(old, rcu_head);
 583
 584         return 0;
 585 }
 586
 587 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 588                                    struct cfg80211_beacon_data *params,
 589                                    const struct ieee80211_csa_settings *csa)
 590 {
 591         struct beacon_data *new, *old;
 592         int new_head_len, new_tail_len;
 593         int size, err;
 594         u32 changed = BSS_CHANGED_BEACON;
 595
 596         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 597
 598
 599         /* Need to have a beacon head if we don't have one yet */
 600         if (!params->head && !old)
 601                 return -EINVAL;
 602
 603         /* new or old head? */
 604         if (params->head)
 605                 new_head_len = params->head_len;
 606         else
 607                 new_head_len = old->head_len;
 608
 609         /* new or old tail? */
 610         if (params->tail || !old)
 611                 /* params->tail_len will be zero for !params->tail */
 612                 new_tail_len = params->tail_len;
 613         else
 614                 new_tail_len = old->tail_len;
 615
 616         size = sizeof(*new) + new_head_len + new_tail_len;
 617
 618         new = kzalloc(size, GFP_KERNEL);
 619         if (!new)
 620                 return -ENOMEM;
 621
 622         /* start filling the new info now */
 623
 624         /*
 625          * pointers go into the block we allocated,
 626          * memory is | beacon_data | head | tail |
 627          */
 628         new->head = ((u8 *) new) + sizeof(*new);
 629         new->tail = new->head + new_head_len;
 630         new->head_len = new_head_len;
 631         new->tail_len = new_tail_len;
 632
 633         if (csa) {
 634                 new->csa_current_counter = csa->count;
 635                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 636                        csa->n_counter_offsets_beacon *
 637                        sizeof(new->csa_counter_offsets[0]));
 638         }
 639
 640         /* copy in head */
 641         if (params->head)
 642                 memcpy(new->head, params->head, new_head_len);
 643         else
 644                 memcpy(new->head, old->head, new_head_len);
 645
 646         /* copy in optional tail */
 647         if (params->tail)
 648                 memcpy(new->tail, params->tail, new_tail_len);
 649         else
 650                 if (old)
 651                         memcpy(new->tail, old->tail, new_tail_len);
 652
 653         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 654                                        params->probe_resp_len, csa);
 655         if (err < 0)
 656                 return err;
 657         if (err == 0)
 658                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 659
 660         rcu_assign_pointer(sdata->u.ap.beacon, new);
 661
 662         if (old)
 663                 kfree_rcu(old, rcu_head);
 664
 665         return changed;
 666 }
 667
 668 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 669                               struct cfg80211_ap_settings *params)
 670 {
 671         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 672         struct ieee80211_local *local = sdata->local;
 673         struct beacon_data *old;
 674         struct ieee80211_sub_if_data *vlan;
 675         u32 changed = BSS_CHANGED_BEACON_INT |
 676                       BSS_CHANGED_BEACON_ENABLED |
 677                       BSS_CHANGED_BEACON |
 678                       BSS_CHANGED_SSID |
 679                       BSS_CHANGED_P2P_PS;
 680         int err;
 681
 682         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 683         if (old)
 684                 return -EALREADY;
 685
 686         switch (params->smps_mode) {
 687         case NL80211_SMPS_OFF:
 688                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 689                 break;
 690         case NL80211_SMPS_STATIC:
 691                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 692                 break;
 693         case NL80211_SMPS_DYNAMIC:
 694                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 695                 break;
 696         default:
 697                 return -EINVAL;
 698         }
 699         sdata->needed_rx_chains = sdata->local->rx_chains;
 700
 701         mutex_lock(&local->mtx);
 702         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 703                                         IEEE80211_CHANCTX_SHARED);
 704         if (!err)
 705                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 706         mutex_unlock(&local->mtx);
 707         if (err)
 708                 return err;
 709
 710         /*
 711          * Apply control port protocol, this allows us to
 712          * not encrypt dynamic WEP control frames.
 713          */
 714         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 715         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 716         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 717                                                         &params->crypto,
 718                                                         sdata->vif.type);
 719
 720         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 721                 vlan->control_port_protocol =
 722                         params->crypto.control_port_ethertype;
 723                 vlan->control_port_no_encrypt =
 724                         params->crypto.control_port_no_encrypt;
 725                 vlan->encrypt_headroom =
 726                         ieee80211_cs_headroom(sdata->local,
 727                                               &params->crypto,
 728                                               vlan->vif.type);
 729         }
 730
 731         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 732         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 733         sdata->vif.bss_conf.enable_beacon = true;
 734
 735         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 736         if (params->ssid_len)
 737                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 738                        params->ssid_len);
 739         sdata->vif.bss_conf.hidden_ssid =
 740                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 741
 742         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 743                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 744         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 745                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 746         if (params->p2p_opp_ps)
 747                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 748                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 749
 750         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 751         if (err < 0) {
 752                 ieee80211_vif_release_channel(sdata);
 753                 return err;
 754         }
 755         changed |= err;
 756
 757         err = drv_start_ap(sdata->local, sdata);
 758         if (err) {
 759                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 760
 761                 if (old)
 762                         kfree_rcu(old, rcu_head);
 763                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 764                 ieee80211_vif_release_channel(sdata);
 765                 return err;
 766         }
 767
 768         ieee80211_recalc_dtim(local, sdata);
 769         ieee80211_bss_info_change_notify(sdata, changed);
 770
 771         netif_carrier_on(dev);
 772         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 773                 netif_carrier_on(vlan->dev);
 774
 775         return 0;
 776 }
 777
 778 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 779                                    struct cfg80211_beacon_data *params)
 780 {
 781         struct ieee80211_sub_if_data *sdata;
 782         struct beacon_data *old;
 783         int err;
 784
 785         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 786         sdata_assert_lock(sdata);
 787
 788         /* don't allow changing the beacon while CSA is in place - offset
 789          * of channel switch counter may change
 790          */
 791         if (sdata->vif.csa_active)
 792                 return -EBUSY;
 793
 794         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 795         if (!old)
 796                 return -ENOENT;
 797
 798         err = ieee80211_assign_beacon(sdata, params, NULL);
 799         if (err < 0)
 800                 return err;
 801         ieee80211_bss_info_change_notify(sdata, err);
 802         return 0;
 803 }
 804
 805 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 806 {
 807         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 808         struct ieee80211_sub_if_data *vlan;
 809         struct ieee80211_local *local = sdata->local;
 810         struct beacon_data *old_beacon;
 811         struct probe_resp *old_probe_resp;
 812         struct cfg80211_chan_def chandef;
 813
 814         sdata_assert_lock(sdata);
 815
 816         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 817         if (!old_beacon)
 818                 return -ENOENT;
 819         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 820
 821         /* abort any running channel switch */
 822         mutex_lock(&local->mtx);
 823         sdata->vif.csa_active = false;
 824         if (sdata->csa_block_tx) {
 825                 ieee80211_wake_vif_queues(local, sdata,
 826                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 827                 sdata->csa_block_tx = false;
 828         }
 829
 830         mutex_unlock(&local->mtx);
 831
 832         kfree(sdata->u.ap.next_beacon);
 833         sdata->u.ap.next_beacon = NULL;
 834
 835         /* turn off carrier for this interface and dependent VLANs */
 836         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 837                 netif_carrier_off(vlan->dev);
 838         netif_carrier_off(dev);
 839
 840         /* remove beacon and probe response */
 841         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 842         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 843         kfree_rcu(old_beacon, rcu_head);
 844         if (old_probe_resp)
 845                 kfree_rcu(old_probe_resp, rcu_head);
 846         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 847
 848         __sta_info_flush(sdata, true);
 849         ieee80211_free_keys(sdata, true);
 850
 851         sdata->vif.bss_conf.enable_beacon = false;
 852         sdata->vif.bss_conf.ssid_len = 0;
 853         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 854         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 855
 856         if (sdata->wdev.cac_started) {
 857                 chandef = sdata->vif.bss_conf.chandef;
 858                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 859                 cfg80211_cac_event(sdata->dev, &chandef,
 860                                    NL80211_RADAR_CAC_ABORTED,
 861                                    GFP_KERNEL);
 862         }
 863
 864         drv_stop_ap(sdata->local, sdata);
 865
 866         /* free all potentially still buffered bcast frames */
 867         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 868         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 869
 870         mutex_lock(&local->mtx);
 871         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 872         ieee80211_vif_release_channel(sdata);
 873         mutex_unlock(&local->mtx);
 874
 875         return 0;
 876 }
 877
 878 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 879 struct iapp_layer2_update {
 880         u8 da[ETH_ALEN];        /* broadcast */
 881         u8 sa[ETH_ALEN];        /* STA addr */
 882         __be16 len;             /* 6 */
 883         u8 dsap;                /* 0 */
 884         u8 ssap;                /* 0 */
 885         u8 control;
 886         u8 xid_info[3];
 887 } __packed;
 888
 889 static void ieee80211_send_layer2_update(struct sta_info *sta)
 890 {
 891         struct iapp_layer2_update *msg;
 892         struct sk_buff *skb;
 893
 894         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 895          * bridge devices */
 896
 897         skb = dev_alloc_skb(sizeof(*msg));
 898         if (!skb)
 899                 return;
 900         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 901
 902         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 903          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 904
 905         eth_broadcast_addr(msg->da);
 906         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 907         msg->len = htons(6);
 908         msg->dsap = 0;
 909         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 910         msg->control = 0xaf;    /* XID response lsb.1111F101.
 911                                  * F=0 (no poll command; unsolicited frame) */
 912         msg->xid_info[0] = 0x81;        /* XID format identifier */
 913         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 914         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 915
 916         skb->dev = sta->sdata->dev;
 917         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 918         memset(skb->cb, 0, sizeof(skb->cb));
 919         netif_rx_ni(skb);
 920 }
 921
 922 static int sta_apply_auth_flags(struct ieee80211_local *local,
 923                                 struct sta_info *sta,
 924                                 u32 mask, u32 set)
 925 {
 926         int ret;
 927
 928         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 929             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 930             !test_sta_flag(sta, WLAN_STA_AUTH)) {
 931                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 932                 if (ret)
 933                         return ret;
 934         }
 935
 936         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 937             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 938             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 939                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 940                 if (ret)
 941                         return ret;
 942         }
 943
 944         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 945                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 946                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 947                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 948                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 949                 else
 950                         ret = 0;
 951                 if (ret)
 952                         return ret;
 953         }
 954
 955         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 956             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
 957             test_sta_flag(sta, WLAN_STA_ASSOC)) {
 958                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 959                 if (ret)
 960                         return ret;
 961         }
 962
 963         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 964             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
 965             test_sta_flag(sta, WLAN_STA_AUTH)) {
 966                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
 967                 if (ret)
 968                         return ret;
 969         }
 970
 971         return 0;
 972 }
 973
 974 static int sta_apply_parameters(struct ieee80211_local *local,
 975                                 struct sta_info *sta,
 976                                 struct station_parameters *params)
 977 {
 978         int ret = 0;
 979         struct ieee80211_supported_band *sband;
 980         struct ieee80211_sub_if_data *sdata = sta->sdata;
 981         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
 982         u32 mask, set;
 983
 984         sband = local->hw.wiphy->bands[band];
 985
 986         mask = params->sta_flags_mask;
 987         set = params->sta_flags_set;
 988
 989         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 990                 /*
 991                  * In mesh mode, ASSOCIATED isn't part of the nl80211
 992                  * API but must follow AUTHENTICATED for driver state.
 993                  */
 994                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 995                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 996                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 997                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 998         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
 999                 /*
1000                  * TDLS -- everything follows authorized, but
1001                  * only becoming authorized is possible, not
1002                  * going back
1003                  */
1004                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1005                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1006                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1007                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1008                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1009                 }
1010         }
1011
1012         /* auth flags will be set later for TDLS stations */
1013         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1014                 ret = sta_apply_auth_flags(local, sta, mask, set);
1015                 if (ret)
1016                         return ret;
1017         }
1018
1019         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1020                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1021                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1022                 else
1023                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1024         }
1025
1026         if (mask & BIT(NL80211_STA_FLAG_WME))
1027                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1028
1029         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1030                 if (set & BIT(NL80211_STA_FLAG_MFP))
1031                         set_sta_flag(sta, WLAN_STA_MFP);
1032                 else
1033                         clear_sta_flag(sta, WLAN_STA_MFP);
1034         }
1035
1036         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1037                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1038                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1039                 else
1040                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1041         }
1042
1043         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1044                 sta->sta.uapsd_queues = params->uapsd_queues;
1045                 sta->sta.max_sp = params->max_sp;
1046         }
1047
1048         /*
1049          * cfg80211 validates this (1-2007) and allows setting the AID
1050          * only when creating a new station entry
1051          */
1052         if (params->aid)
1053                 sta->sta.aid = params->aid;
1054
1055         /*
1056          * Some of the following updates would be racy if called on an
1057          * existing station, via ieee80211_change_station(). However,
1058          * all such changes are rejected by cfg80211 except for updates
1059          * changing the supported rates on an existing but not yet used
1060          * TDLS peer.
1061          */
1062
1063         if (params->listen_interval >= 0)
1064                 sta->listen_interval = params->listen_interval;
1065
1066         if (params->supported_rates) {
1067                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1068                                          sband, params->supported_rates,
1069                                          params->supported_rates_len,
1070                                          &sta->sta.supp_rates[band]);
1071         }
1072
1073         if (params->ht_capa)
1074                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1075                                                   params->ht_capa, sta);
1076
1077         if (params->vht_capa)
1078                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1079                                                     params->vht_capa, sta);
1080
1081         if (params->opmode_notif_used) {
1082                 /* returned value is only needed for rc update, but the
1083                  * rc isn't initialized here yet, so ignore it
1084                  */
1085                 __ieee80211_vht_handle_opmode(sdata, sta,
1086                                               params->opmode_notif,
1087                                               band, false);
1088         }
1089
1090         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1091 #ifdef CONFIG_MAC80211_MESH
1092                 u32 changed = 0;
1093
1094                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1095                         switch (params->plink_state) {
1096                         case NL80211_PLINK_ESTAB:
1097                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1098                                         changed = mesh_plink_inc_estab_count(
1099                                                         sdata);
1100                                 sta->plink_state = params->plink_state;
1101
1102                                 ieee80211_mps_sta_status_update(sta);
1103                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1104                                               sdata->u.mesh.mshcfg.power_mode);
1105                                 break;
1106                         case NL80211_PLINK_LISTEN:
1107                         case NL80211_PLINK_BLOCKED:
1108                         case NL80211_PLINK_OPN_SNT:
1109                         case NL80211_PLINK_OPN_RCVD:
1110                         case NL80211_PLINK_CNF_RCVD:
1111                         case NL80211_PLINK_HOLDING:
1112                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1113                                         changed = mesh_plink_dec_estab_count(
1114                                                         sdata);
1115                                 sta->plink_state = params->plink_state;
1116
1117                                 ieee80211_mps_sta_status_update(sta);
1118                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1119                                                 NL80211_MESH_POWER_UNKNOWN);
1120                                 break;
1121                         default:
1122                                 /*  nothing  */
1123                                 break;
1124                         }
1125                 }
1126
1127                 switch (params->plink_action) {
1128                 case NL80211_PLINK_ACTION_NO_ACTION:
1129                         /* nothing */
1130                         break;
1131                 case NL80211_PLINK_ACTION_OPEN:
1132                         changed |= mesh_plink_open(sta);
1133                         break;
1134                 case NL80211_PLINK_ACTION_BLOCK:
1135                         changed |= mesh_plink_block(sta);
1136                         break;
1137                 }
1138
1139                 if (params->local_pm)
1140                         changed |=
1141                               ieee80211_mps_set_sta_local_pm(sta,
1142                                                              params->local_pm);
1143                 ieee80211_mbss_info_change_notify(sdata, changed);
1144 #endif
1145         }
1146
1147         /* set the STA state after all sta info from usermode has been set */
1148         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1149                 ret = sta_apply_auth_flags(local, sta, mask, set);
1150                 if (ret)
1151                         return ret;
1152         }
1153
1154         return 0;
1155 }
1156
1157 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1158                                  const u8 *mac,
1159                                  struct station_parameters *params)
1160 {
1161         struct ieee80211_local *local = wiphy_priv(wiphy);
1162         struct sta_info *sta;
1163         struct ieee80211_sub_if_data *sdata;
1164         int err;
1165         int layer2_update;
1166
1167         if (params->vlan) {
1168                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1169
1170                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1171                     sdata->vif.type != NL80211_IFTYPE_AP)
1172                         return -EINVAL;
1173         } else
1174                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1175
1176         if (ether_addr_equal(mac, sdata->vif.addr))
1177                 return -EINVAL;
1178
1179         if (is_multicast_ether_addr(mac))
1180                 return -EINVAL;
1181
1182         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1183         if (!sta)
1184                 return -ENOMEM;
1185
1186         /*
1187          * defaults -- if userspace wants something else we'll
1188          * change it accordingly in sta_apply_parameters()
1189          */
1190         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1191                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1192                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1193         } else {
1194                 sta->sta.tdls = true;
1195         }
1196
1197         err = sta_apply_parameters(local, sta, params);
1198         if (err) {
1199                 sta_info_free(local, sta);
1200                 return err;
1201         }
1202
1203         /*
1204          * for TDLS, rate control should be initialized only when
1205          * rates are known and station is marked authorized
1206          */
1207         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1208                 rate_control_rate_init(sta);
1209
1210         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1211                 sdata->vif.type == NL80211_IFTYPE_AP;
1212
1213         err = sta_info_insert_rcu(sta);
1214         if (err) {
1215                 rcu_read_unlock();
1216                 return err;
1217         }
1218
1219         if (layer2_update)
1220                 ieee80211_send_layer2_update(sta);
1221
1222         rcu_read_unlock();
1223
1224         return 0;
1225 }
1226
1227 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1228                                  struct station_del_parameters *params)
1229 {
1230         struct ieee80211_sub_if_data *sdata;
1231
1232         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1233
1234         if (params->mac)
1235                 return sta_info_destroy_addr_bss(sdata, params->mac);
1236
1237         sta_info_flush(sdata);
1238         return 0;
1239 }
1240
1241 static int ieee80211_change_station(struct wiphy *wiphy,
1242                                     struct net_device *dev, const u8 *mac,
1243                                     struct station_parameters *params)
1244 {
1245         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1246         struct ieee80211_local *local = wiphy_priv(wiphy);
1247         struct sta_info *sta;
1248         struct ieee80211_sub_if_data *vlansdata;
1249         enum cfg80211_station_type statype;
1250         int err;
1251
1252         mutex_lock(&local->sta_mtx);
1253
1254         sta = sta_info_get_bss(sdata, mac);
1255         if (!sta) {
1256                 err = -ENOENT;
1257                 goto out_err;
1258         }
1259
1260         switch (sdata->vif.type) {
1261         case NL80211_IFTYPE_MESH_POINT:
1262                 if (sdata->u.mesh.user_mpm)
1263                         statype = CFG80211_STA_MESH_PEER_USER;
1264                 else
1265                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1266                 break;
1267         case NL80211_IFTYPE_ADHOC:
1268                 statype = CFG80211_STA_IBSS;
1269                 break;
1270         case NL80211_IFTYPE_STATION:
1271                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1272                         statype = CFG80211_STA_AP_STA;
1273                         break;
1274                 }
1275                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1276                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1277                 else
1278                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1279                 break;
1280         case NL80211_IFTYPE_AP:
1281         case NL80211_IFTYPE_AP_VLAN:
1282                 statype = CFG80211_STA_AP_CLIENT;
1283                 break;
1284         default:
1285                 err = -EOPNOTSUPP;
1286                 goto out_err;
1287         }
1288
1289         err = cfg80211_check_station_change(wiphy, params, statype);
1290         if (err)
1291                 goto out_err;
1292
1293         if (params->vlan && params->vlan != sta->sdata->dev) {
1294                 bool prev_4addr = false;
1295                 bool new_4addr = false;
1296
1297                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1298
1299                 if (params->vlan->ieee80211_ptr->use_4addr) {
1300                         if (vlansdata->u.vlan.sta) {
1301                                 err = -EBUSY;
1302                                 goto out_err;
1303                         }
1304
1305                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1306                         new_4addr = true;
1307                 }
1308
1309                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1310                     sta->sdata->u.vlan.sta) {
1311                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1312                         prev_4addr = true;
1313                 }
1314
1315                 sta->sdata = vlansdata;
1316
1317                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1318                     prev_4addr != new_4addr) {
1319                         if (new_4addr)
1320                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1321                         else
1322                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1323                 }
1324
1325                 ieee80211_send_layer2_update(sta);
1326         }
1327
1328         err = sta_apply_parameters(local, sta, params);
1329         if (err)
1330                 goto out_err;
1331
1332         /* When peer becomes authorized, init rate control as well */
1333         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1334             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1335                 rate_control_rate_init(sta);
1336
1337         mutex_unlock(&local->sta_mtx);
1338
1339         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1340              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1341             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1342             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1343             sta_info_tx_streams(sta) != 1) {
1344                 ht_dbg(sta->sdata,
1345                        "%pM just authorized and MIMO capable - update SMPS\n",
1346                        sta->sta.addr);
1347                 ieee80211_send_smps_action(sta->sdata,
1348                         sta->sdata->bss->req_smps,
1349                         sta->sta.addr,
1350                         sta->sdata->vif.bss_conf.bssid);
1351         }
1352
1353         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1354             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1355                 ieee80211_recalc_ps(local, -1);
1356                 ieee80211_recalc_ps_vif(sdata);
1357         }
1358
1359         return 0;
1360 out_err:
1361         mutex_unlock(&local->sta_mtx);
1362         return err;
1363 }
1364
1365 #ifdef CONFIG_MAC80211_MESH
1366 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1367                                const u8 *dst, const u8 *next_hop)
1368 {
1369         struct ieee80211_sub_if_data *sdata;
1370         struct mesh_path *mpath;
1371         struct sta_info *sta;
1372
1373         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1374
1375         rcu_read_lock();
1376         sta = sta_info_get(sdata, next_hop);
1377         if (!sta) {
1378                 rcu_read_unlock();
1379                 return -ENOENT;
1380         }
1381
1382         mpath = mesh_path_add(sdata, dst);
1383         if (IS_ERR(mpath)) {
1384                 rcu_read_unlock();
1385                 return PTR_ERR(mpath);
1386         }
1387
1388         mesh_path_fix_nexthop(mpath, sta);
1389
1390         rcu_read_unlock();
1391         return 0;
1392 }
1393
1394 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1395                                const u8 *dst)
1396 {
1397         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1398
1399         if (dst)
1400                 return mesh_path_del(sdata, dst);
1401
1402         mesh_path_flush_by_iface(sdata);
1403         return 0;
1404 }
1405
1406 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1407                                   const u8 *dst, const u8 *next_hop)
1408 {
1409         struct ieee80211_sub_if_data *sdata;
1410         struct mesh_path *mpath;
1411         struct sta_info *sta;
1412
1413         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1414
1415         rcu_read_lock();
1416
1417         sta = sta_info_get(sdata, next_hop);
1418         if (!sta) {
1419                 rcu_read_unlock();
1420                 return -ENOENT;
1421         }
1422
1423         mpath = mesh_path_lookup(sdata, dst);
1424         if (!mpath) {
1425                 rcu_read_unlock();
1426                 return -ENOENT;
1427         }
1428
1429         mesh_path_fix_nexthop(mpath, sta);
1430
1431         rcu_read_unlock();
1432         return 0;
1433 }
1434
1435 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1436                             struct mpath_info *pinfo)
1437 {
1438         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1439
1440         if (next_hop_sta)
1441                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1442         else
1443                 memset(next_hop, 0, ETH_ALEN);
1444
1445         memset(pinfo, 0, sizeof(*pinfo));
1446
1447         pinfo->generation = mesh_paths_generation;
1448
1449         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1450                         MPATH_INFO_SN |
1451                         MPATH_INFO_METRIC |
1452                         MPATH_INFO_EXPTIME |
1453                         MPATH_INFO_DISCOVERY_TIMEOUT |
1454                         MPATH_INFO_DISCOVERY_RETRIES |
1455                         MPATH_INFO_FLAGS;
1456
1457         pinfo->frame_qlen = mpath->frame_queue.qlen;
1458         pinfo->sn = mpath->sn;
1459         pinfo->metric = mpath->metric;
1460         if (time_before(jiffies, mpath->exp_time))
1461                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1462         pinfo->discovery_timeout =
1463                         jiffies_to_msecs(mpath->discovery_timeout);
1464         pinfo->discovery_retries = mpath->discovery_retries;
1465         if (mpath->flags & MESH_PATH_ACTIVE)
1466                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1467         if (mpath->flags & MESH_PATH_RESOLVING)
1468                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1469         if (mpath->flags & MESH_PATH_SN_VALID)
1470                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1471         if (mpath->flags & MESH_PATH_FIXED)
1472                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1473         if (mpath->flags & MESH_PATH_RESOLVED)
1474                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1475 }
1476
1477 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1478                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1479
1480 {
1481         struct ieee80211_sub_if_data *sdata;
1482         struct mesh_path *mpath;
1483
1484         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1485
1486         rcu_read_lock();
1487         mpath = mesh_path_lookup(sdata, dst);
1488         if (!mpath) {
1489                 rcu_read_unlock();
1490                 return -ENOENT;
1491         }
1492         memcpy(dst, mpath->dst, ETH_ALEN);
1493         mpath_set_pinfo(mpath, next_hop, pinfo);
1494         rcu_read_unlock();
1495         return 0;
1496 }
1497
1498 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1499                                 int idx, u8 *dst, u8 *next_hop,
1500                                 struct mpath_info *pinfo)
1501 {
1502         struct ieee80211_sub_if_data *sdata;
1503         struct mesh_path *mpath;
1504
1505         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1506
1507         rcu_read_lock();
1508         mpath = mesh_path_lookup_by_idx(sdata, idx);
1509         if (!mpath) {
1510                 rcu_read_unlock();
1511                 return -ENOENT;
1512         }
1513         memcpy(dst, mpath->dst, ETH_ALEN);
1514         mpath_set_pinfo(mpath, next_hop, pinfo);
1515         rcu_read_unlock();
1516         return 0;
1517 }
1518
1519 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1520                           struct mpath_info *pinfo)
1521 {
1522         memset(pinfo, 0, sizeof(*pinfo));
1523         memcpy(mpp, mpath->mpp, ETH_ALEN);
1524
1525         pinfo->generation = mpp_paths_generation;
1526 }
1527
1528 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1529                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1530
1531 {
1532         struct ieee80211_sub_if_data *sdata;
1533         struct mesh_path *mpath;
1534
1535         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1536
1537         rcu_read_lock();
1538         mpath = mpp_path_lookup(sdata, dst);
1539         if (!mpath) {
1540                 rcu_read_unlock();
1541                 return -ENOENT;
1542         }
1543         memcpy(dst, mpath->dst, ETH_ALEN);
1544         mpp_set_pinfo(mpath, mpp, pinfo);
1545         rcu_read_unlock();
1546         return 0;
1547 }
1548
1549 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1550                               int idx, u8 *dst, u8 *mpp,
1551                               struct mpath_info *pinfo)
1552 {
1553         struct ieee80211_sub_if_data *sdata;
1554         struct mesh_path *mpath;
1555
1556         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1557
1558         rcu_read_lock();
1559         mpath = mpp_path_lookup_by_idx(sdata, idx);
1560         if (!mpath) {
1561                 rcu_read_unlock();
1562                 return -ENOENT;
1563         }
1564         memcpy(dst, mpath->dst, ETH_ALEN);
1565         mpp_set_pinfo(mpath, mpp, pinfo);
1566         rcu_read_unlock();
1567         return 0;
1568 }
1569
1570 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1571                                 struct net_device *dev,
1572                                 struct mesh_config *conf)
1573 {
1574         struct ieee80211_sub_if_data *sdata;
1575         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1576
1577         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1578         return 0;
1579 }
1580
1581 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1582 {
1583         return (mask >> (parm-1)) & 0x1;
1584 }
1585
1586 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1587                 const struct mesh_setup *setup)
1588 {
1589         u8 *new_ie;
1590         const u8 *old_ie;
1591         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1592                                         struct ieee80211_sub_if_data, u.mesh);
1593
1594         /* allocate information elements */
1595         new_ie = NULL;
1596         old_ie = ifmsh->ie;
1597
1598         if (setup->ie_len) {
1599                 new_ie = kmemdup(setup->ie, setup->ie_len,
1600                                 GFP_KERNEL);
1601                 if (!new_ie)
1602                         return -ENOMEM;
1603         }
1604         ifmsh->ie_len = setup->ie_len;
1605         ifmsh->ie = new_ie;
1606         kfree(old_ie);
1607
1608         /* now copy the rest of the setup parameters */
1609         ifmsh->mesh_id_len = setup->mesh_id_len;
1610         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1611         ifmsh->mesh_sp_id = setup->sync_method;
1612         ifmsh->mesh_pp_id = setup->path_sel_proto;
1613         ifmsh->mesh_pm_id = setup->path_metric;
1614         ifmsh->user_mpm = setup->user_mpm;
1615         ifmsh->mesh_auth_id = setup->auth_id;
1616         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1617         if (setup->is_authenticated)
1618                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1619         if (setup->is_secure)
1620                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1621
1622         /* mcast rate setting in Mesh Node */
1623         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1624                                                 sizeof(setup->mcast_rate));
1625         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1626
1627         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1628         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1629
1630         return 0;
1631 }
1632
1633 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1634                                         struct net_device *dev, u32 mask,
1635                                         const struct mesh_config *nconf)
1636 {
1637         struct mesh_config *conf;
1638         struct ieee80211_sub_if_data *sdata;
1639         struct ieee80211_if_mesh *ifmsh;
1640
1641         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1642         ifmsh = &sdata->u.mesh;
1643
1644         /* Set the config options which we are interested in setting */
1645         conf = &(sdata->u.mesh.mshcfg);
1646         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1647                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1648         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1649                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1650         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1651                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1652         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1653                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1654         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1655                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1656         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1657                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1658         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1659                 conf->element_ttl = nconf->element_ttl;
1660         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1661                 if (ifmsh->user_mpm)
1662                         return -EBUSY;
1663                 conf->auto_open_plinks = nconf->auto_open_plinks;
1664         }
1665         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1666                 conf->dot11MeshNbrOffsetMaxNeighbor =
1667                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1668         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1669                 conf->dot11MeshHWMPmaxPREQretries =
1670                         nconf->dot11MeshHWMPmaxPREQretries;
1671         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1672                 conf->path_refresh_time = nconf->path_refresh_time;
1673         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1674                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1675         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1676                 conf->dot11MeshHWMPactivePathTimeout =
1677                         nconf->dot11MeshHWMPactivePathTimeout;
1678         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1679                 conf->dot11MeshHWMPpreqMinInterval =
1680                         nconf->dot11MeshHWMPpreqMinInterval;
1681         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1682                 conf->dot11MeshHWMPperrMinInterval =
1683                         nconf->dot11MeshHWMPperrMinInterval;
1684         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1685                            mask))
1686                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1687                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1688         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1689                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1690                 ieee80211_mesh_root_setup(ifmsh);
1691         }
1692         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1693                 /* our current gate announcement implementation rides on root
1694                  * announcements, so require this ifmsh to also be a root node
1695                  * */
1696                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1697                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1698                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1699                         ieee80211_mesh_root_setup(ifmsh);
1700                 }
1701                 conf->dot11MeshGateAnnouncementProtocol =
1702                         nconf->dot11MeshGateAnnouncementProtocol;
1703         }
1704         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1705                 conf->dot11MeshHWMPRannInterval =
1706                         nconf->dot11MeshHWMPRannInterval;
1707         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1708                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1709         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1710                 /* our RSSI threshold implementation is supported only for
1711                  * devices that report signal in dBm.
1712                  */
1713                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1714                         return -ENOTSUPP;
1715                 conf->rssi_threshold = nconf->rssi_threshold;
1716         }
1717         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1718                 conf->ht_opmode = nconf->ht_opmode;
1719                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1720                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1721         }
1722         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1723                 conf->dot11MeshHWMPactivePathToRootTimeout =
1724                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1725         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1726                 conf->dot11MeshHWMProotInterval =
1727                         nconf->dot11MeshHWMProotInterval;
1728         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1729                 conf->dot11MeshHWMPconfirmationInterval =
1730                         nconf->dot11MeshHWMPconfirmationInterval;
1731         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1732                 conf->power_mode = nconf->power_mode;
1733                 ieee80211_mps_local_status_update(sdata);
1734         }
1735         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1736                 conf->dot11MeshAwakeWindowDuration =
1737                         nconf->dot11MeshAwakeWindowDuration;
1738         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1739                 conf->plink_timeout = nconf->plink_timeout;
1740         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1741         return 0;
1742 }
1743
1744 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1745                                const struct mesh_config *conf,
1746                                const struct mesh_setup *setup)
1747 {
1748         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1749         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1750         int err;
1751
1752         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1753         err = copy_mesh_setup(ifmsh, setup);
1754         if (err)
1755                 return err;
1756
1757         /* can mesh use other SMPS modes? */
1758         sdata->smps_mode = IEEE80211_SMPS_OFF;
1759         sdata->needed_rx_chains = sdata->local->rx_chains;
1760
1761         mutex_lock(&sdata->local->mtx);
1762         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1763                                         IEEE80211_CHANCTX_SHARED);
1764         mutex_unlock(&sdata->local->mtx);
1765         if (err)
1766                 return err;
1767
1768         return ieee80211_start_mesh(sdata);
1769 }
1770
1771 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1772 {
1773         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1774
1775         ieee80211_stop_mesh(sdata);
1776         mutex_lock(&sdata->local->mtx);
1777         ieee80211_vif_release_channel(sdata);
1778         mutex_unlock(&sdata->local->mtx);
1779
1780         return 0;
1781 }
1782 #endif
1783
1784 static int ieee80211_change_bss(struct wiphy *wiphy,
1785                                 struct net_device *dev,
1786                                 struct bss_parameters *params)
1787 {
1788         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1789         enum ieee80211_band band;
1790         u32 changed = 0;
1791
1792         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1793                 return -ENOENT;
1794
1795         band = ieee80211_get_sdata_band(sdata);
1796
1797         if (params->use_cts_prot >= 0) {
1798                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1799                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1800         }
1801         if (params->use_short_preamble >= 0) {
1802                 sdata->vif.bss_conf.use_short_preamble =
1803                         params->use_short_preamble;
1804                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1805         }
1806
1807         if (!sdata->vif.bss_conf.use_short_slot &&
1808             band == IEEE80211_BAND_5GHZ) {
1809                 sdata->vif.bss_conf.use_short_slot = true;
1810                 changed |= BSS_CHANGED_ERP_SLOT;
1811         }
1812
1813         if (params->use_short_slot_time >= 0) {
1814                 sdata->vif.bss_conf.use_short_slot =
1815                         params->use_short_slot_time;
1816                 changed |= BSS_CHANGED_ERP_SLOT;
1817         }
1818
1819         if (params->basic_rates) {
1820                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1821                                          wiphy->bands[band],
1822                                          params->basic_rates,
1823                                          params->basic_rates_len,
1824                                          &sdata->vif.bss_conf.basic_rates);
1825                 changed |= BSS_CHANGED_BASIC_RATES;
1826         }
1827
1828         if (params->ap_isolate >= 0) {
1829                 if (params->ap_isolate)
1830                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1831                 else
1832                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1833         }
1834
1835         if (params->ht_opmode >= 0) {
1836                 sdata->vif.bss_conf.ht_operation_mode =
1837                         (u16) params->ht_opmode;
1838                 changed |= BSS_CHANGED_HT;
1839         }
1840
1841         if (params->p2p_ctwindow >= 0) {
1842                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1843                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1844                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1845                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1846                 changed |= BSS_CHANGED_P2P_PS;
1847         }
1848
1849         if (params->p2p_opp_ps > 0) {
1850                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1851                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1852                 changed |= BSS_CHANGED_P2P_PS;
1853         } else if (params->p2p_opp_ps == 0) {
1854                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1855                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1856                 changed |= BSS_CHANGED_P2P_PS;
1857         }
1858
1859         ieee80211_bss_info_change_notify(sdata, changed);
1860
1861         return 0;
1862 }
1863
1864 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1865                                     struct net_device *dev,
1866                                     struct ieee80211_txq_params *params)
1867 {
1868         struct ieee80211_local *local = wiphy_priv(wiphy);
1869         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1870         struct ieee80211_tx_queue_params p;
1871
1872         if (!local->ops->conf_tx)
1873                 return -EOPNOTSUPP;
1874
1875         if (local->hw.queues < IEEE80211_NUM_ACS)
1876                 return -EOPNOTSUPP;
1877
1878         memset(&p, 0, sizeof(p));
1879         p.aifs = params->aifs;
1880         p.cw_max = params->cwmax;
1881         p.cw_min = params->cwmin;
1882         p.txop = params->txop;
1883
1884         /*
1885          * Setting tx queue params disables u-apsd because it's only
1886          * called in master mode.
1887          */
1888         p.uapsd = false;
1889
1890         sdata->tx_conf[params->ac] = p;
1891         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1892                 wiphy_debug(local->hw.wiphy,
1893                             "failed to set TX queue parameters for AC %d\n",
1894                             params->ac);
1895                 return -EINVAL;
1896         }
1897
1898         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1899
1900         return 0;
1901 }
1902
1903 #ifdef CONFIG_PM
1904 static int ieee80211_suspend(struct wiphy *wiphy,
1905                              struct cfg80211_wowlan *wowlan)
1906 {
1907         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1908 }
1909
1910 static int ieee80211_resume(struct wiphy *wiphy)
1911 {
1912         return __ieee80211_resume(wiphy_priv(wiphy));
1913 }
1914 #else
1915 #define ieee80211_suspend NULL
1916 #define ieee80211_resume NULL
1917 #endif
1918
1919 static int ieee80211_scan(struct wiphy *wiphy,
1920                           struct cfg80211_scan_request *req)
1921 {
1922         struct ieee80211_sub_if_data *sdata;
1923
1924         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1925
1926         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1927         case NL80211_IFTYPE_STATION:
1928         case NL80211_IFTYPE_ADHOC:
1929         case NL80211_IFTYPE_MESH_POINT:
1930         case NL80211_IFTYPE_P2P_CLIENT:
1931         case NL80211_IFTYPE_P2P_DEVICE:
1932                 break;
1933         case NL80211_IFTYPE_P2P_GO:
1934                 if (sdata->local->ops->hw_scan)
1935                         break;
1936                 /*
1937                  * FIXME: implement NoA while scanning in software,
1938                  * for now fall through to allow scanning only when
1939                  * beaconing hasn't been configured yet
1940                  */
1941         case NL80211_IFTYPE_AP:
1942                 /*
1943                  * If the scan has been forced (and the driver supports
1944                  * forcing), don't care about being beaconing already.
1945                  * This will create problems to the attached stations (e.g. all
1946                  * the  frames sent while scanning on other channel will be
1947                  * lost)
1948                  */
1949                 if (sdata->u.ap.beacon &&
1950                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1951                      !(req->flags & NL80211_SCAN_FLAG_AP)))
1952                         return -EOPNOTSUPP;
1953                 break;
1954         default:
1955                 return -EOPNOTSUPP;
1956         }
1957
1958         return ieee80211_request_scan(sdata, req);
1959 }
1960
1961 static int
1962 ieee80211_sched_scan_start(struct wiphy *wiphy,
1963                            struct net_device *dev,
1964                            struct cfg80211_sched_scan_request *req)
1965 {
1966         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1967
1968         if (!sdata->local->ops->sched_scan_start)
1969                 return -EOPNOTSUPP;
1970
1971         return ieee80211_request_sched_scan_start(sdata, req);
1972 }
1973
1974 static int
1975 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1976 {
1977         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1978
1979         if (!sdata->local->ops->sched_scan_stop)
1980                 return -EOPNOTSUPP;
1981
1982         return ieee80211_request_sched_scan_stop(sdata);
1983 }
1984
1985 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1986                           struct cfg80211_auth_request *req)
1987 {
1988         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1989 }
1990
1991 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1992                            struct cfg80211_assoc_request *req)
1993 {
1994         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1995 }
1996
1997 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1998                             struct cfg80211_deauth_request *req)
1999 {
2000         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2001 }
2002
2003 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2004                               struct cfg80211_disassoc_request *req)
2005 {
2006         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2007 }
2008
2009 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2010                                struct cfg80211_ibss_params *params)
2011 {
2012         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2013 }
2014
2015 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2016 {
2017         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2018 }
2019
2020 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2021                                     int rate[IEEE80211_NUM_BANDS])
2022 {
2023         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2024
2025         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2026                sizeof(int) * IEEE80211_NUM_BANDS);
2027
2028         return 0;
2029 }
2030
2031 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2032 {
2033         struct ieee80211_local *local = wiphy_priv(wiphy);
2034         int err;
2035
2036         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2037                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2038
2039                 if (err)
2040                         return err;
2041         }
2042
2043         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2044             (changed & WIPHY_PARAM_DYN_ACK)) {
2045                 s16 coverage_class;
2046
2047                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2048                                         wiphy->coverage_class : -1;
2049                 err = drv_set_coverage_class(local, coverage_class);
2050
2051                 if (err)
2052                         return err;
2053         }
2054
2055         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2056                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2057
2058                 if (err)
2059                         return err;
2060         }
2061
2062         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2063                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2064                         return -EINVAL;
2065                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2066         }
2067         if (changed & WIPHY_PARAM_RETRY_LONG) {
2068                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2069                         return -EINVAL;
2070                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2071         }
2072         if (changed &
2073             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2074                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2075
2076         return 0;
2077 }
2078
2079 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2080                                   struct wireless_dev *wdev,
2081                                   enum nl80211_tx_power_setting type, int mbm)
2082 {
2083         struct ieee80211_local *local = wiphy_priv(wiphy);
2084         struct ieee80211_sub_if_data *sdata;
2085
2086         if (wdev) {
2087                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2088
2089                 switch (type) {
2090                 case NL80211_TX_POWER_AUTOMATIC:
2091                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2092                         break;
2093                 case NL80211_TX_POWER_LIMITED:
2094                 case NL80211_TX_POWER_FIXED:
2095                         if (mbm < 0 || (mbm % 100))
2096                                 return -EOPNOTSUPP;
2097                         sdata->user_power_level = MBM_TO_DBM(mbm);
2098                         break;
2099                 }
2100
2101                 ieee80211_recalc_txpower(sdata);
2102
2103                 return 0;
2104         }
2105
2106         switch (type) {
2107         case NL80211_TX_POWER_AUTOMATIC:
2108                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2109                 break;
2110         case NL80211_TX_POWER_LIMITED:
2111         case NL80211_TX_POWER_FIXED:
2112                 if (mbm < 0 || (mbm % 100))
2113                         return -EOPNOTSUPP;
2114                 local->user_power_level = MBM_TO_DBM(mbm);
2115                 break;
2116         }
2117
2118         mutex_lock(&local->iflist_mtx);
2119         list_for_each_entry(sdata, &local->interfaces, list)
2120                 sdata->user_power_level = local->user_power_level;
2121         list_for_each_entry(sdata, &local->interfaces, list)
2122                 ieee80211_recalc_txpower(sdata);
2123         mutex_unlock(&local->iflist_mtx);
2124
2125         return 0;
2126 }
2127
2128 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2129                                   struct wireless_dev *wdev,
2130                                   int *dbm)
2131 {
2132         struct ieee80211_local *local = wiphy_priv(wiphy);
2133         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2134
2135         if (!local->use_chanctx)
2136                 *dbm = local->hw.conf.power_level;
2137         else
2138                 *dbm = sdata->vif.bss_conf.txpower;
2139
2140         return 0;
2141 }
2142
2143 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2144                                   const u8 *addr)
2145 {
2146         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2147
2148         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2149
2150         return 0;
2151 }
2152
2153 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2154 {
2155         struct ieee80211_local *local = wiphy_priv(wiphy);
2156
2157         drv_rfkill_poll(local);
2158 }
2159
2160 #ifdef CONFIG_NL80211_TESTMODE
2161 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2162                                   struct wireless_dev *wdev,
2163                                   void *data, int len)
2164 {
2165         struct ieee80211_local *local = wiphy_priv(wiphy);
2166         struct ieee80211_vif *vif = NULL;
2167
2168         if (!local->ops->testmode_cmd)
2169                 return -EOPNOTSUPP;
2170
2171         if (wdev) {
2172                 struct ieee80211_sub_if_data *sdata;
2173
2174                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2175                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2176                         vif = &sdata->vif;
2177         }
2178
2179         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2180 }
2181
2182 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2183                                    struct sk_buff *skb,
2184                                    struct netlink_callback *cb,
2185                                    void *data, int len)
2186 {
2187         struct ieee80211_local *local = wiphy_priv(wiphy);
2188
2189         if (!local->ops->testmode_dump)
2190                 return -EOPNOTSUPP;
2191
2192         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2193 }
2194 #endif
2195
2196 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2197                                 enum ieee80211_smps_mode smps_mode)
2198 {
2199         struct sta_info *sta;
2200         enum ieee80211_smps_mode old_req;
2201         int i;
2202
2203         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2204                 return -EINVAL;
2205
2206         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2207                 return 0;
2208
2209         old_req = sdata->u.ap.req_smps;
2210         sdata->u.ap.req_smps = smps_mode;
2211
2212         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2213         if (old_req == smps_mode ||
2214             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2215                 return 0;
2216
2217          /* If no associated stations, there's no need to do anything */
2218         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2219                 sdata->smps_mode = smps_mode;
2220                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2221                 return 0;
2222         }
2223
2224         ht_dbg(sdata,
2225                "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2226                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2227
2228         mutex_lock(&sdata->local->sta_mtx);
2229         for (i = 0; i < STA_HASH_SIZE; i++) {
2230                 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2231                                 lockdep_is_held(&sdata->local->sta_mtx));
2232                      sta;
2233                      sta = rcu_dereference_protected(sta->hnext,
2234                                 lockdep_is_held(&sdata->local->sta_mtx))) {
2235                         /*
2236                          * Only stations associated to our AP and
2237                          * associated VLANs
2238                          */
2239                         if (sta->sdata->bss != &sdata->u.ap)
2240                                 continue;
2241
2242                         /* This station doesn't support MIMO - skip it */
2243                         if (sta_info_tx_streams(sta) == 1)
2244                                 continue;
2245
2246                         /*
2247                          * Don't wake up a STA just to send the action frame
2248                          * unless we are getting more restrictive.
2249                          */
2250                         if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2251                             !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2252                                                            smps_mode)) {
2253                                 ht_dbg(sdata,
2254                                        "Won't send SMPS to sleeping STA %pM\n",
2255                                        sta->sta.addr);
2256                                 continue;
2257                         }
2258
2259                         /*
2260                          * If the STA is not authorized, wait until it gets
2261                          * authorized and the action frame will be sent then.
2262                          */
2263                         if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2264                                 continue;
2265
2266                         ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2267                         ieee80211_send_smps_action(sdata, smps_mode,
2268                                                    sta->sta.addr,
2269                                                    sdata->vif.bss_conf.bssid);
2270                 }
2271         }
2272         mutex_unlock(&sdata->local->sta_mtx);
2273
2274         sdata->smps_mode = smps_mode;
2275         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2276
2277         return 0;
2278 }
2279
2280 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2281                                  enum ieee80211_smps_mode smps_mode)
2282 {
2283         const u8 *ap;
2284         enum ieee80211_smps_mode old_req;
2285         int err;
2286
2287         lockdep_assert_held(&sdata->wdev.mtx);
2288
2289         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2290                 return -EINVAL;
2291
2292         old_req = sdata->u.mgd.req_smps;
2293         sdata->u.mgd.req_smps = smps_mode;
2294
2295         if (old_req == smps_mode &&
2296             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2297                 return 0;
2298
2299         /*
2300          * If not associated, or current association is not an HT
2301          * association, there's no need to do anything, just store
2302          * the new value until we associate.
2303          */
2304         if (!sdata->u.mgd.associated ||
2305             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2306                 return 0;
2307
2308         ap = sdata->u.mgd.associated->bssid;
2309
2310         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2311                 if (sdata->u.mgd.powersave)
2312                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2313                 else
2314                         smps_mode = IEEE80211_SMPS_OFF;
2315         }
2316
2317         /* send SM PS frame to AP */
2318         err = ieee80211_send_smps_action(sdata, smps_mode,
2319                                          ap, ap);
2320         if (err)
2321                 sdata->u.mgd.req_smps = old_req;
2322
2323         return err;
2324 }
2325
2326 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2327                                     bool enabled, int timeout)
2328 {
2329         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2330         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2331
2332         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2333                 return -EOPNOTSUPP;
2334
2335         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2336                 return -EOPNOTSUPP;
2337
2338         if (enabled == sdata->u.mgd.powersave &&
2339             timeout == local->dynamic_ps_forced_timeout)
2340                 return 0;
2341
2342         sdata->u.mgd.powersave = enabled;
2343         local->dynamic_ps_forced_timeout = timeout;
2344
2345         /* no change, but if automatic follow powersave */
2346         sdata_lock(sdata);
2347         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2348         sdata_unlock(sdata);
2349
2350         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2351                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2352
2353         ieee80211_recalc_ps(local, -1);
2354         ieee80211_recalc_ps_vif(sdata);
2355
2356         return 0;
2357 }
2358
2359 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2360                                          struct net_device *dev,
2361                                          s32 rssi_thold, u32 rssi_hyst)
2362 {
2363         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2364         struct ieee80211_vif *vif = &sdata->vif;
2365         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2366
2367         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2368             rssi_hyst == bss_conf->cqm_rssi_hyst)
2369                 return 0;
2370
2371         bss_conf->cqm_rssi_thold = rssi_thold;
2372         bss_conf->cqm_rssi_hyst = rssi_hyst;
2373
2374         /* tell the driver upon association, unless already associated */
2375         if (sdata->u.mgd.associated &&
2376             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2377                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2378
2379         return 0;
2380 }
2381
2382 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2383                                       struct net_device *dev,
2384                                       const u8 *addr,
2385                                       const struct cfg80211_bitrate_mask *mask)
2386 {
2387         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2388         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2389         int i, ret;
2390
2391         if (!ieee80211_sdata_running(sdata))
2392                 return -ENETDOWN;
2393
2394         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2395                 ret = drv_set_bitrate_mask(local, sdata, mask);
2396                 if (ret)
2397                         return ret;
2398         }
2399
2400         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2401                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2402                 int j;
2403
2404                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2405                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2406                        sizeof(mask->control[i].ht_mcs));
2407
2408                 sdata->rc_has_mcs_mask[i] = false;
2409                 if (!sband)
2410                         continue;
2411
2412                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2413                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2414                                 sdata->rc_has_mcs_mask[i] = true;
2415                                 break;
2416                         }
2417         }
2418
2419         return 0;
2420 }
2421
2422 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2423                                            struct ieee80211_roc_work *new_roc,
2424                                            struct ieee80211_roc_work *cur_roc)
2425 {
2426         unsigned long j = jiffies;
2427         unsigned long cur_roc_end = cur_roc->hw_start_time +
2428                                     msecs_to_jiffies(cur_roc->duration);
2429         struct ieee80211_roc_work *next_roc;
2430         int new_dur;
2431
2432         if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2433                 return false;
2434
2435         if (time_after(j + IEEE80211_ROC_MIN_LEFT, cur_roc_end))
2436                 return false;
2437
2438         ieee80211_handle_roc_started(new_roc);
2439
2440         new_dur = new_roc->duration - jiffies_to_msecs(cur_roc_end - j);
2441
2442         /* cur_roc is long enough - add new_roc to the dependents list. */
2443         if (new_dur <= 0) {
2444                 list_add_tail(&new_roc->list, &cur_roc->dependents);
2445                 return true;
2446         }
2447
2448         new_roc->duration = new_dur;
2449
2450         /*
2451          * if cur_roc was already coalesced before, we might
2452          * want to extend the next roc instead of adding
2453          * a new one.
2454          */
2455         next_roc = list_entry(cur_roc->list.next,
2456                               struct ieee80211_roc_work, list);
2457         if (&next_roc->list != &local->roc_list &&
2458             next_roc->chan == new_roc->chan &&
2459             next_roc->sdata == new_roc->sdata &&
2460             !WARN_ON(next_roc->started)) {
2461                 list_add_tail(&new_roc->list, &next_roc->dependents);
2462                 next_roc->duration = max(next_roc->duration,
2463                                          new_roc->duration);
2464                 next_roc->type = max(next_roc->type, new_roc->type);
2465                 return true;
2466         }
2467
2468         /* add right after cur_roc */
2469         list_add(&new_roc->list, &cur_roc->list);
2470
2471         return true;
2472 }
2473
2474 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2475                                     struct ieee80211_sub_if_data *sdata,
2476                                     struct ieee80211_channel *channel,
2477                                     unsigned int duration, u64 *cookie,
2478                                     struct sk_buff *txskb,
2479                                     enum ieee80211_roc_type type)
2480 {
2481         struct ieee80211_roc_work *roc, *tmp;
2482         bool queued = false;
2483         int ret;
2484
2485         lockdep_assert_held(&local->mtx);
2486
2487         if (local->use_chanctx && !local->ops->remain_on_channel)
2488                 return -EOPNOTSUPP;
2489
2490         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2491         if (!roc)
2492                 return -ENOMEM;
2493
2494         /*
2495          * If the duration is zero, then the driver
2496          * wouldn't actually do anything. Set it to
2497          * 10 for now.
2498          *
2499          * TODO: cancel the off-channel operation
2500          *       when we get the SKB's TX status and
2501          *       the wait time was zero before.
2502          */
2503         if (!duration)
2504                 duration = 10;
2505
2506         roc->chan = channel;
2507         roc->duration = duration;
2508         roc->req_duration = duration;
2509         roc->frame = txskb;
2510         roc->type = type;
2511         roc->mgmt_tx_cookie = (unsigned long)txskb;
2512         roc->sdata = sdata;
2513         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2514         INIT_LIST_HEAD(&roc->dependents);
2515
2516         /*
2517          * cookie is either the roc cookie (for normal roc)
2518          * or the SKB (for mgmt TX)
2519          */
2520         if (!txskb) {
2521                 /* local->mtx protects this */
2522                 local->roc_cookie_counter++;
2523                 roc->cookie = local->roc_cookie_counter;
2524                 /* wow, you wrapped 64 bits ... more likely a bug */
2525                 if (WARN_ON(roc->cookie == 0)) {
2526                         roc->cookie = 1;
2527                         local->roc_cookie_counter++;
2528                 }
2529                 *cookie = roc->cookie;
2530         } else {
2531                 *cookie = (unsigned long)txskb;
2532         }
2533
2534         /* if there's one pending or we're scanning, queue this one */
2535         if (!list_empty(&local->roc_list) ||
2536             local->scanning || local->radar_detect_enabled)
2537                 goto out_check_combine;
2538
2539         /* if not HW assist, just queue & schedule work */
2540         if (!local->ops->remain_on_channel) {
2541                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2542                 goto out_queue;
2543         }
2544
2545         /* otherwise actually kick it off here (for error handling) */
2546
2547         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2548         if (ret) {
2549                 kfree(roc);
2550                 return ret;
2551         }
2552
2553         roc->started = true;
2554         goto out_queue;
2555
2556  out_check_combine:
2557         list_for_each_entry(tmp, &local->roc_list, list) {
2558                 if (tmp->chan != channel || tmp->sdata != sdata)
2559                         continue;
2560
2561                 /*
2562                  * Extend this ROC if possible:
2563                  *
2564                  * If it hasn't started yet, just increase the duration
2565                  * and add the new one to the list of dependents.
2566                  * If the type of the new ROC has higher priority, modify the
2567                  * type of the previous one to match that of the new one.
2568                  */
2569                 if (!tmp->started) {
2570                         list_add_tail(&roc->list, &tmp->dependents);
2571                         tmp->duration = max(tmp->duration, roc->duration);
2572                         tmp->type = max(tmp->type, roc->type);
2573                         queued = true;
2574                         break;
2575                 }
2576
2577                 /* If it has already started, it's more difficult ... */
2578                 if (local->ops->remain_on_channel) {
2579                         /*
2580                          * In the offloaded ROC case, if it hasn't begun, add
2581                          * this new one to the dependent list to be handled
2582                          * when the master one begins. If it has begun,
2583                          * check that there's still a minimum time left and
2584                          * if so, start this one, transmitting the frame, but
2585                          * add it to the list directly after this one with
2586                          * a reduced time so we'll ask the driver to execute
2587                          * it right after finishing the previous one, in the
2588                          * hope that it'll also be executed right afterwards,
2589                          * effectively extending the old one.
2590                          * If there's no minimum time left, just add it to the
2591                          * normal list.
2592                          * TODO: the ROC type is ignored here, assuming that it
2593                          * is better to immediately use the current ROC.
2594                          */
2595                         if (!tmp->hw_begun) {
2596                                 list_add_tail(&roc->list, &tmp->dependents);
2597                                 queued = true;
2598                                 break;
2599                         }
2600
2601                         if (ieee80211_coalesce_started_roc(local, roc, tmp))
2602                                 queued = true;
2603                 } else if (del_timer_sync(&tmp->work.timer)) {
2604                         unsigned long new_end;
2605
2606                         /*
2607                          * In the software ROC case, cancel the timer, if
2608                          * that fails then the finish work is already
2609                          * queued/pending and thus we queue the new ROC
2610                          * normally, if that succeeds then we can extend
2611                          * the timer duration and TX the frame (if any.)
2612                          */
2613
2614                         list_add_tail(&roc->list, &tmp->dependents);
2615                         queued = true;
2616
2617                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2618
2619                         /* ok, it was started & we canceled timer */
2620                         if (time_after(new_end, tmp->work.timer.expires))
2621                                 mod_timer(&tmp->work.timer, new_end);
2622                         else
2623                                 add_timer(&tmp->work.timer);
2624
2625                         ieee80211_handle_roc_started(roc);
2626                 }
2627                 break;
2628         }
2629
2630  out_queue:
2631         if (!queued)
2632                 list_add_tail(&roc->list, &local->roc_list);
2633
2634         return 0;
2635 }
2636
2637 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2638                                        struct wireless_dev *wdev,
2639                                        struct ieee80211_channel *chan,
2640                                        unsigned int duration,
2641                                        u64 *cookie)
2642 {
2643         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2644         struct ieee80211_local *local = sdata->local;
2645         int ret;
2646
2647         mutex_lock(&local->mtx);
2648         ret = ieee80211_start_roc_work(local, sdata, chan,
2649                                        duration, cookie, NULL,
2650                                        IEEE80211_ROC_TYPE_NORMAL);
2651         mutex_unlock(&local->mtx);
2652
2653         return ret;
2654 }
2655
2656 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2657                                 u64 cookie, bool mgmt_tx)
2658 {
2659         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2660         int ret;
2661
2662         mutex_lock(&local->mtx);
2663         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2664                 struct ieee80211_roc_work *dep, *tmp2;
2665
2666                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2667                         if (!mgmt_tx && dep->cookie != cookie)
2668                                 continue;
2669                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2670                                 continue;
2671                         /* found dependent item -- just remove it */
2672                         list_del(&dep->list);
2673                         mutex_unlock(&local->mtx);
2674
2675                         ieee80211_roc_notify_destroy(dep, true);
2676                         return 0;
2677                 }
2678
2679                 if (!mgmt_tx && roc->cookie != cookie)
2680                         continue;
2681                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2682                         continue;
2683
2684                 found = roc;
2685                 break;
2686         }
2687
2688         if (!found) {
2689                 mutex_unlock(&local->mtx);
2690                 return -ENOENT;
2691         }
2692
2693         /*
2694          * We found the item to cancel, so do that. Note that it
2695          * may have dependents, which we also cancel (and send
2696          * the expired signal for.) Not doing so would be quite
2697          * tricky here, but we may need to fix it later.
2698          */
2699
2700         if (local->ops->remain_on_channel) {
2701                 if (found->started) {
2702                         ret = drv_cancel_remain_on_channel(local);
2703                         if (WARN_ON_ONCE(ret)) {
2704                                 mutex_unlock(&local->mtx);
2705                                 return ret;
2706                         }
2707                 }
2708
2709                 list_del(&found->list);
2710
2711                 if (found->started)
2712                         ieee80211_start_next_roc(local);
2713                 mutex_unlock(&local->mtx);
2714
2715                 ieee80211_roc_notify_destroy(found, true);
2716         } else {
2717                 /* work may be pending so use it all the time */
2718                 found->abort = true;
2719                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2720
2721                 mutex_unlock(&local->mtx);
2722
2723                 /* work will clean up etc */
2724                 flush_delayed_work(&found->work);
2725                 WARN_ON(!found->to_be_freed);
2726                 kfree(found);
2727         }
2728
2729         return 0;
2730 }
2731
2732 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2733                                               struct wireless_dev *wdev,
2734                                               u64 cookie)
2735 {
2736         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2737         struct ieee80211_local *local = sdata->local;
2738
2739         return ieee80211_cancel_roc(local, cookie, false);
2740 }
2741
2742 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2743                                            struct net_device *dev,
2744                                            struct cfg80211_chan_def *chandef,
2745                                            u32 cac_time_ms)
2746 {
2747         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2748         struct ieee80211_local *local = sdata->local;
2749         int err;
2750
2751         mutex_lock(&local->mtx);
2752         if (!list_empty(&local->roc_list) || local->scanning) {
2753                 err = -EBUSY;
2754                 goto out_unlock;
2755         }
2756
2757         /* whatever, but channel contexts should not complain about that one */
2758         sdata->smps_mode = IEEE80211_SMPS_OFF;
2759         sdata->needed_rx_chains = local->rx_chains;
2760
2761         err = ieee80211_vif_use_channel(sdata, chandef,
2762                                         IEEE80211_CHANCTX_SHARED);
2763         if (err)
2764                 goto out_unlock;
2765
2766         ieee80211_queue_delayed_work(&sdata->local->hw,
2767                                      &sdata->dfs_cac_timer_work,
2768                                      msecs_to_jiffies(cac_time_ms));
2769
2770  out_unlock:
2771         mutex_unlock(&local->mtx);
2772         return err;
2773 }
2774
2775 static struct cfg80211_beacon_data *
2776 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2777 {
2778         struct cfg80211_beacon_data *new_beacon;
2779         u8 *pos;
2780         int len;
2781
2782         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2783               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2784               beacon->probe_resp_len;
2785
2786         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2787         if (!new_beacon)
2788                 return NULL;
2789
2790         pos = (u8 *)(new_beacon + 1);
2791         if (beacon->head_len) {
2792                 new_beacon->head_len = beacon->head_len;
2793                 new_beacon->head = pos;
2794                 memcpy(pos, beacon->head, beacon->head_len);
2795                 pos += beacon->head_len;
2796         }
2797         if (beacon->tail_len) {
2798                 new_beacon->tail_len = beacon->tail_len;
2799                 new_beacon->tail = pos;
2800                 memcpy(pos, beacon->tail, beacon->tail_len);
2801                 pos += beacon->tail_len;
2802         }
2803         if (beacon->beacon_ies_len) {
2804                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2805                 new_beacon->beacon_ies = pos;
2806                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2807                 pos += beacon->beacon_ies_len;
2808         }
2809         if (beacon->proberesp_ies_len) {
2810                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2811                 new_beacon->proberesp_ies = pos;
2812                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2813                 pos += beacon->proberesp_ies_len;
2814         }
2815         if (beacon->assocresp_ies_len) {
2816                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2817                 new_beacon->assocresp_ies = pos;
2818                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2819                 pos += beacon->assocresp_ies_len;
2820         }
2821         if (beacon->probe_resp_len) {
2822                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2823                 beacon->probe_resp = pos;
2824                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2825                 pos += beacon->probe_resp_len;
2826         }
2827
2828         return new_beacon;
2829 }
2830
2831 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2832 {
2833         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2834
2835         ieee80211_queue_work(&sdata->local->hw,
2836                              &sdata->csa_finalize_work);
2837 }
2838 EXPORT_SYMBOL(ieee80211_csa_finish);
2839
2840 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2841                                           u32 *changed)
2842 {
2843         int err;
2844
2845         switch (sdata->vif.type) {
2846         case NL80211_IFTYPE_AP:
2847                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2848                                               NULL);
2849                 kfree(sdata->u.ap.next_beacon);
2850                 sdata->u.ap.next_beacon = NULL;
2851
2852                 if (err < 0)
2853                         return err;
2854                 *changed |= err;
2855                 break;
2856         case NL80211_IFTYPE_ADHOC:
2857                 err = ieee80211_ibss_finish_csa(sdata);
2858                 if (err < 0)
2859                         return err;
2860                 *changed |= err;
2861                 break;
2862 #ifdef CONFIG_MAC80211_MESH
2863         case NL80211_IFTYPE_MESH_POINT:
2864                 err = ieee80211_mesh_finish_csa(sdata);
2865                 if (err < 0)
2866                         return err;
2867                 *changed |= err;
2868                 break;
2869 #endif
2870         default:
2871                 WARN_ON(1);
2872                 return -EINVAL;
2873         }
2874
2875         return 0;
2876 }
2877
2878 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2879 {
2880         struct ieee80211_local *local = sdata->local;
2881         u32 changed = 0;
2882         int err;
2883
2884         sdata_assert_lock(sdata);
2885         lockdep_assert_held(&local->mtx);
2886         lockdep_assert_held(&local->chanctx_mtx);
2887
2888         /*
2889          * using reservation isn't immediate as it may be deferred until later
2890          * with multi-vif. once reservation is complete it will re-schedule the
2891          * work with no reserved_chanctx so verify chandef to check if it
2892          * completed successfully
2893          */
2894
2895         if (sdata->reserved_chanctx) {
2896                 /*
2897                  * with multi-vif csa driver may call ieee80211_csa_finish()
2898                  * many times while waiting for other interfaces to use their
2899                  * reservations
2900                  */
2901                 if (sdata->reserved_ready)
2902                         return 0;
2903
2904                 return ieee80211_vif_use_reserved_context(sdata);
2905         }
2906
2907         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2908                                         &sdata->csa_chandef))
2909                 return -EINVAL;
2910
2911         sdata->vif.csa_active = false;
2912
2913         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2914         if (err)
2915                 return err;
2916
2917         ieee80211_bss_info_change_notify(sdata, changed);
2918
2919         if (sdata->csa_block_tx) {
2920                 ieee80211_wake_vif_queues(local, sdata,
2921                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2922                 sdata->csa_block_tx = false;
2923         }
2924
2925         err = drv_post_channel_switch(sdata);
2926         if (err)
2927                 return err;
2928
2929         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2930
2931         return 0;
2932 }
2933
2934 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2935 {
2936         if (__ieee80211_csa_finalize(sdata)) {
2937                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2938                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2939                                     GFP_KERNEL);
2940         }
2941 }
2942
2943 void ieee80211_csa_finalize_work(struct work_struct *work)
2944 {
2945         struct ieee80211_sub_if_data *sdata =
2946                 container_of(work, struct ieee80211_sub_if_data,
2947                              csa_finalize_work);
2948         struct ieee80211_local *local = sdata->local;
2949
2950         sdata_lock(sdata);
2951         mutex_lock(&local->mtx);
2952         mutex_lock(&local->chanctx_mtx);
2953
2954         /* AP might have been stopped while waiting for the lock. */
2955         if (!sdata->vif.csa_active)
2956                 goto unlock;
2957
2958         if (!ieee80211_sdata_running(sdata))
2959                 goto unlock;
2960
2961         ieee80211_csa_finalize(sdata);
2962
2963 unlock:
2964         mutex_unlock(&local->chanctx_mtx);
2965         mutex_unlock(&local->mtx);
2966         sdata_unlock(sdata);
2967 }
2968
2969 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
2970                                     struct cfg80211_csa_settings *params,
2971                                     u32 *changed)
2972 {
2973         struct ieee80211_csa_settings csa = {};
2974         int err;
2975
2976         switch (sdata->vif.type) {
2977         case NL80211_IFTYPE_AP:
2978                 sdata->u.ap.next_beacon =
2979                         cfg80211_beacon_dup(&params->beacon_after);
2980                 if (!sdata->u.ap.next_beacon)
2981                         return -ENOMEM;
2982
2983                 /*
2984                  * With a count of 0, we don't have to wait for any
2985                  * TBTT before switching, so complete the CSA
2986                  * immediately.  In theory, with a count == 1 we
2987                  * should delay the switch until just before the next
2988                  * TBTT, but that would complicate things so we switch
2989                  * immediately too.  If we would delay the switch
2990                  * until the next TBTT, we would have to set the probe
2991                  * response here.
2992                  *
2993                  * TODO: A channel switch with count <= 1 without
2994                  * sending a CSA action frame is kind of useless,
2995                  * because the clients won't know we're changing
2996                  * channels.  The action frame must be implemented
2997                  * either here or in the userspace.
2998                  */
2999                 if (params->count <= 1)
3000                         break;
3001
3002                 if ((params->n_counter_offsets_beacon >
3003                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3004                     (params->n_counter_offsets_presp >
3005                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3006                         return -EINVAL;
3007
3008                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3009                 csa.counter_offsets_presp = params->counter_offsets_presp;
3010                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3011                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3012                 csa.count = params->count;
3013
3014                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3015                 if (err < 0) {
3016                         kfree(sdata->u.ap.next_beacon);
3017                         return err;
3018                 }
3019                 *changed |= err;
3020
3021                 break;
3022         case NL80211_IFTYPE_ADHOC:
3023                 if (!sdata->vif.bss_conf.ibss_joined)
3024                         return -EINVAL;
3025
3026                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3027                         return -EINVAL;
3028
3029                 switch (params->chandef.width) {
3030                 case NL80211_CHAN_WIDTH_40:
3031                         if (cfg80211_get_chandef_type(&params->chandef) !=
3032                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3033                                 return -EINVAL;
3034                 case NL80211_CHAN_WIDTH_5:
3035                 case NL80211_CHAN_WIDTH_10:
3036                 case NL80211_CHAN_WIDTH_20_NOHT:
3037                 case NL80211_CHAN_WIDTH_20:
3038                         break;
3039                 default:
3040                         return -EINVAL;
3041                 }
3042
3043                 /* changes into another band are not supported */
3044                 if (sdata->u.ibss.chandef.chan->band !=
3045                     params->chandef.chan->band)
3046                         return -EINVAL;
3047
3048                 /* see comments in the NL80211_IFTYPE_AP block */
3049                 if (params->count > 1) {
3050                         err = ieee80211_ibss_csa_beacon(sdata, params);
3051                         if (err < 0)
3052                                 return err;
3053                         *changed |= err;
3054                 }
3055
3056                 ieee80211_send_action_csa(sdata, params);
3057
3058                 break;
3059 #ifdef CONFIG_MAC80211_MESH
3060         case NL80211_IFTYPE_MESH_POINT: {
3061                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3062
3063                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3064                         return -EINVAL;
3065
3066                 /* changes into another band are not supported */
3067                 if (sdata->vif.bss_conf.chandef.chan->band !=
3068                     params->chandef.chan->band)
3069                         return -EINVAL;
3070
3071                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3072                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3073                         if (!ifmsh->pre_value)
3074                                 ifmsh->pre_value = 1;
3075                         else
3076                                 ifmsh->pre_value++;
3077                 }
3078
3079                 /* see comments in the NL80211_IFTYPE_AP block */
3080                 if (params->count > 1) {
3081                         err = ieee80211_mesh_csa_beacon(sdata, params);
3082                         if (err < 0) {
3083                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3084                                 return err;
3085                         }
3086                         *changed |= err;
3087                 }
3088
3089                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3090                         ieee80211_send_action_csa(sdata, params);
3091
3092                 break;
3093                 }
3094 #endif
3095         default:
3096                 return -EOPNOTSUPP;
3097         }
3098
3099         return 0;
3100 }
3101
3102 static int
3103 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3104                            struct cfg80211_csa_settings *params)
3105 {
3106         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3107         struct ieee80211_local *local = sdata->local;
3108         struct ieee80211_channel_switch ch_switch;
3109         struct ieee80211_chanctx_conf *conf;
3110         struct ieee80211_chanctx *chanctx;
3111         int err, changed = 0;
3112
3113         sdata_assert_lock(sdata);
3114         lockdep_assert_held(&local->mtx);
3115
3116         if (!list_empty(&local->roc_list) || local->scanning)
3117                 return -EBUSY;
3118
3119         if (sdata->wdev.cac_started)
3120                 return -EBUSY;
3121
3122         if (cfg80211_chandef_identical(&params->chandef,
3123                                        &sdata->vif.bss_conf.chandef))
3124                 return -EINVAL;
3125
3126         /* don't allow another channel switch if one is already active. */
3127         if (sdata->vif.csa_active)
3128                 return -EBUSY;
3129
3130         mutex_lock(&local->chanctx_mtx);
3131         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3132                                          lockdep_is_held(&local->chanctx_mtx));
3133         if (!conf) {
3134                 err = -EBUSY;
3135                 goto out;
3136         }
3137
3138         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3139         if (!chanctx) {
3140                 err = -EBUSY;
3141                 goto out;
3142         }
3143
3144         err = drv_pre_channel_switch(sdata, &ch_switch);
3145         if (err)
3146                 goto out;
3147
3148         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3149                                             chanctx->mode,
3150                                             params->radar_required);
3151         if (err)
3152                 goto out;
3153
3154         /* if reservation is invalid then this will fail */
3155         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3156         if (err) {
3157                 ieee80211_vif_unreserve_chanctx(sdata);
3158                 goto out;
3159         }
3160
3161         ch_switch.timestamp = 0;
3162         ch_switch.device_timestamp = 0;
3163         ch_switch.block_tx = params->block_tx;
3164         ch_switch.chandef = params->chandef;
3165         ch_switch.count = params->count;
3166
3167         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3168         if (err) {
3169                 ieee80211_vif_unreserve_chanctx(sdata);
3170                 goto out;
3171         }
3172
3173         sdata->csa_chandef = params->chandef;
3174         sdata->csa_block_tx = params->block_tx;
3175         sdata->vif.csa_active = true;
3176
3177         if (sdata->csa_block_tx)
3178                 ieee80211_stop_vif_queues(local, sdata,
3179                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3180
3181         if (changed) {
3182                 ieee80211_bss_info_change_notify(sdata, changed);
3183                 drv_channel_switch_beacon(sdata, &params->chandef);
3184         } else {
3185                 /* if the beacon didn't change, we can finalize immediately */
3186                 ieee80211_csa_finalize(sdata);
3187         }
3188
3189 out:
3190         mutex_unlock(&local->chanctx_mtx);
3191         return err;
3192 }
3193
3194 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3195                              struct cfg80211_csa_settings *params)
3196 {
3197         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3198         struct ieee80211_local *local = sdata->local;
3199         int err;
3200
3201         mutex_lock(&local->mtx);
3202         err = __ieee80211_channel_switch(wiphy, dev, params);
3203         mutex_unlock(&local->mtx);
3204
3205         return err;
3206 }
3207
3208 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3209                              struct cfg80211_mgmt_tx_params *params,
3210                              u64 *cookie)
3211 {
3212         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3213         struct ieee80211_local *local = sdata->local;
3214         struct sk_buff *skb;
3215         struct sta_info *sta;
3216         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3217         bool need_offchan = false;
3218         u32 flags;
3219         int ret;
3220         u8 *data;
3221
3222         if (params->dont_wait_for_ack)
3223                 flags = IEEE80211_TX_CTL_NO_ACK;
3224         else
3225                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3226                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3227
3228         if (params->no_cck)
3229                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3230
3231         switch (sdata->vif.type) {
3232         case NL80211_IFTYPE_ADHOC:
3233                 if (!sdata->vif.bss_conf.ibss_joined)
3234                         need_offchan = true;
3235                 /* fall through */
3236 #ifdef CONFIG_MAC80211_MESH
3237         case NL80211_IFTYPE_MESH_POINT:
3238                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3239                     !sdata->u.mesh.mesh_id_len)
3240                         need_offchan = true;
3241                 /* fall through */
3242 #endif
3243         case NL80211_IFTYPE_AP:
3244         case NL80211_IFTYPE_AP_VLAN:
3245         case NL80211_IFTYPE_P2P_GO:
3246                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3247                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3248                     !rcu_access_pointer(sdata->bss->beacon))
3249                         need_offchan = true;
3250                 if (!ieee80211_is_action(mgmt->frame_control) ||
3251                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3252                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3253                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3254                         break;
3255                 rcu_read_lock();
3256                 sta = sta_info_get(sdata, mgmt->da);
3257                 rcu_read_unlock();
3258                 if (!sta)
3259                         return -ENOLINK;
3260                 break;
3261         case NL80211_IFTYPE_STATION:
3262         case NL80211_IFTYPE_P2P_CLIENT:
3263                 if (!sdata->u.mgd.associated)
3264                         need_offchan = true;
3265                 break;
3266         case NL80211_IFTYPE_P2P_DEVICE:
3267                 need_offchan = true;
3268                 break;
3269         default:
3270                 return -EOPNOTSUPP;
3271         }
3272
3273         /* configurations requiring offchan cannot work if no channel has been
3274          * specified
3275          */
3276         if (need_offchan && !params->chan)
3277                 return -EINVAL;
3278
3279         mutex_lock(&local->mtx);
3280
3281         /* Check if the operating channel is the requested channel */
3282         if (!need_offchan) {
3283                 struct ieee80211_chanctx_conf *chanctx_conf;
3284
3285                 rcu_read_lock();
3286                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3287
3288                 if (chanctx_conf) {
3289                         need_offchan = params->chan &&
3290                                        (params->chan !=
3291                                         chanctx_conf->def.chan);
3292                 } else if (!params->chan) {
3293                         ret = -EINVAL;
3294                         rcu_read_unlock();
3295                         goto out_unlock;
3296                 } else {
3297                         need_offchan = true;
3298                 }
3299                 rcu_read_unlock();
3300         }
3301
3302         if (need_offchan && !params->offchan) {
3303                 ret = -EBUSY;
3304                 goto out_unlock;
3305         }
3306
3307         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3308         if (!skb) {
3309                 ret = -ENOMEM;
3310                 goto out_unlock;
3311         }
3312         skb_reserve(skb, local->hw.extra_tx_headroom);
3313
3314         data = skb_put(skb, params->len);
3315         memcpy(data, params->buf, params->len);
3316
3317         /* Update CSA counters */
3318         if (sdata->vif.csa_active &&
3319             (sdata->vif.type == NL80211_IFTYPE_AP ||
3320              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3321             params->n_csa_offsets) {
3322                 int i;
3323                 struct beacon_data *beacon = NULL;
3324
3325                 rcu_read_lock();
3326
3327                 if (sdata->vif.type == NL80211_IFTYPE_AP)
3328                         beacon = rcu_dereference(sdata->u.ap.beacon);
3329                 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3330                         beacon = rcu_dereference(sdata->u.ibss.presp);
3331                 else if (ieee80211_vif_is_mesh(&sdata->vif))
3332                         beacon = rcu_dereference(sdata->u.mesh.beacon);
3333
3334                 if (beacon)
3335                         for (i = 0; i < params->n_csa_offsets; i++)
3336                                 data[params->csa_offsets[i]] =
3337                                         beacon->csa_current_counter;
3338
3339                 rcu_read_unlock();
3340         }
3341
3342         IEEE80211_SKB_CB(skb)->flags = flags;
3343
3344         skb->dev = sdata->dev;
3345
3346         if (!need_offchan) {
3347                 *cookie = (unsigned long) skb;
3348                 ieee80211_tx_skb(sdata, skb);
3349                 ret = 0;
3350                 goto out_unlock;
3351         }
3352
3353         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3354                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3355         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3356                 IEEE80211_SKB_CB(skb)->hw_queue =
3357                         local->hw.offchannel_tx_hw_queue;
3358
3359         /* This will handle all kinds of coalescing and immediate TX */
3360         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3361                                        params->wait, cookie, skb,
3362                                        IEEE80211_ROC_TYPE_MGMT_TX);
3363         if (ret)
3364                 kfree_skb(skb);
3365  out_unlock:
3366         mutex_unlock(&local->mtx);
3367         return ret;
3368 }
3369
3370 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3371                                          struct wireless_dev *wdev,
3372                                          u64 cookie)
3373 {
3374         struct ieee80211_local *local = wiphy_priv(wiphy);
3375
3376         return ieee80211_cancel_roc(local, cookie, true);
3377 }
3378
3379 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3380                                           struct wireless_dev *wdev,
3381                                           u16 frame_type, bool reg)
3382 {
3383         struct ieee80211_local *local = wiphy_priv(wiphy);
3384
3385         switch (frame_type) {
3386         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3387                 if (reg)
3388                         local->probe_req_reg++;
3389                 else
3390                         local->probe_req_reg--;
3391
3392                 if (!local->open_count)
3393                         break;
3394
3395                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3396                 break;
3397         default:
3398                 break;
3399         }
3400 }
3401
3402 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3403 {
3404         struct ieee80211_local *local = wiphy_priv(wiphy);
3405
3406         if (local->started)
3407                 return -EOPNOTSUPP;
3408
3409         return drv_set_antenna(local, tx_ant, rx_ant);
3410 }
3411
3412 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3413 {
3414         struct ieee80211_local *local = wiphy_priv(wiphy);
3415
3416         return drv_get_antenna(local, tx_ant, rx_ant);
3417 }
3418
3419 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3420                                     struct net_device *dev,
3421                                     struct cfg80211_gtk_rekey_data *data)
3422 {
3423         struct ieee80211_local *local = wiphy_priv(wiphy);
3424         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3425
3426         if (!local->ops->set_rekey_data)
3427                 return -EOPNOTSUPP;
3428
3429         drv_set_rekey_data(local, sdata, data);
3430
3431         return 0;
3432 }
3433
3434 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3435                                   const u8 *peer, u64 *cookie)
3436 {
3437         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3438         struct ieee80211_local *local = sdata->local;
3439         struct ieee80211_qos_hdr *nullfunc;
3440         struct sk_buff *skb;
3441         int size = sizeof(*nullfunc);
3442         __le16 fc;
3443         bool qos;
3444         struct ieee80211_tx_info *info;
3445         struct sta_info *sta;
3446         struct ieee80211_chanctx_conf *chanctx_conf;
3447         enum ieee80211_band band;
3448
3449         rcu_read_lock();
3450         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3451         if (WARN_ON(!chanctx_conf)) {
3452                 rcu_read_unlock();
3453                 return -EINVAL;
3454         }
3455         band = chanctx_conf->def.chan->band;
3456         sta = sta_info_get_bss(sdata, peer);
3457         if (sta) {
3458                 qos = sta->sta.wme;
3459         } else {
3460                 rcu_read_unlock();
3461                 return -ENOLINK;
3462         }
3463
3464         if (qos) {
3465                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3466                                  IEEE80211_STYPE_QOS_NULLFUNC |
3467                                  IEEE80211_FCTL_FROMDS);
3468         } else {
3469                 size -= 2;
3470                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3471                                  IEEE80211_STYPE_NULLFUNC |
3472                                  IEEE80211_FCTL_FROMDS);
3473         }
3474
3475         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3476         if (!skb) {
3477                 rcu_read_unlock();
3478                 return -ENOMEM;
3479         }
3480
3481         skb->dev = dev;
3482
3483         skb_reserve(skb, local->hw.extra_tx_headroom);
3484
3485         nullfunc = (void *) skb_put(skb, size);
3486         nullfunc->frame_control = fc;
3487         nullfunc->duration_id = 0;
3488         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3489         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3490         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3491         nullfunc->seq_ctrl = 0;
3492
3493         info = IEEE80211_SKB_CB(skb);
3494
3495         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3496                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3497
3498         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3499         skb->priority = 7;
3500         if (qos)
3501                 nullfunc->qos_ctrl = cpu_to_le16(7);
3502
3503         local_bh_disable();
3504         ieee80211_xmit(sdata, skb, band);
3505         local_bh_enable();
3506         rcu_read_unlock();
3507
3508         *cookie = (unsigned long) skb;
3509         return 0;
3510 }
3511
3512 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3513                                      struct wireless_dev *wdev,
3514                                      struct cfg80211_chan_def *chandef)
3515 {
3516         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3517         struct ieee80211_local *local = wiphy_priv(wiphy);
3518         struct ieee80211_chanctx_conf *chanctx_conf;
3519         int ret = -ENODATA;
3520
3521         rcu_read_lock();
3522         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3523         if (chanctx_conf) {
3524                 *chandef = chanctx_conf->def;
3525                 ret = 0;
3526         } else if (local->open_count > 0 &&
3527                    local->open_count == local->monitors &&
3528                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3529                 if (local->use_chanctx)
3530                         *chandef = local->monitor_chandef;
3531                 else
3532                         *chandef = local->_oper_chandef;
3533                 ret = 0;
3534         }
3535         rcu_read_unlock();
3536
3537         return ret;
3538 }
3539
3540 #ifdef CONFIG_PM
3541 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3542 {
3543         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3544 }
3545 #endif
3546
3547 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3548                                  struct net_device *dev,
3549                                  struct cfg80211_qos_map *qos_map)
3550 {
3551         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3552         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3553
3554         if (qos_map) {
3555                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3556                 if (!new_qos_map)
3557                         return -ENOMEM;
3558                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3559         } else {
3560                 /* A NULL qos_map was passed to disable QoS mapping */
3561                 new_qos_map = NULL;
3562         }
3563
3564         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3565         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3566         if (old_qos_map)
3567                 kfree_rcu(old_qos_map, rcu_head);
3568
3569         return 0;
3570 }
3571
3572 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3573                                       struct net_device *dev,
3574                                       struct cfg80211_chan_def *chandef)
3575 {
3576         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3577         int ret;
3578         u32 changed = 0;
3579
3580         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3581         if (ret == 0)
3582                 ieee80211_bss_info_change_notify(sdata, changed);
3583
3584         return ret;
3585 }
3586
3587 const struct cfg80211_ops mac80211_config_ops = {
3588         .add_virtual_intf = ieee80211_add_iface,
3589         .del_virtual_intf = ieee80211_del_iface,
3590         .change_virtual_intf = ieee80211_change_iface,
3591         .start_p2p_device = ieee80211_start_p2p_device,
3592         .stop_p2p_device = ieee80211_stop_p2p_device,
3593         .add_key = ieee80211_add_key,
3594         .del_key = ieee80211_del_key,
3595         .get_key = ieee80211_get_key,
3596         .set_default_key = ieee80211_config_default_key,
3597         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3598         .start_ap = ieee80211_start_ap,
3599         .change_beacon = ieee80211_change_beacon,
3600         .stop_ap = ieee80211_stop_ap,
3601         .add_station = ieee80211_add_station,
3602         .del_station = ieee80211_del_station,
3603         .change_station = ieee80211_change_station,
3604         .get_station = ieee80211_get_station,
3605         .dump_station = ieee80211_dump_station,
3606         .dump_survey = ieee80211_dump_survey,
3607 #ifdef CONFIG_MAC80211_MESH
3608         .add_mpath = ieee80211_add_mpath,
3609         .del_mpath = ieee80211_del_mpath,
3610         .change_mpath = ieee80211_change_mpath,
3611         .get_mpath = ieee80211_get_mpath,
3612         .dump_mpath = ieee80211_dump_mpath,
3613         .get_mpp = ieee80211_get_mpp,
3614         .dump_mpp = ieee80211_dump_mpp,
3615         .update_mesh_config = ieee80211_update_mesh_config,
3616         .get_mesh_config = ieee80211_get_mesh_config,
3617         .join_mesh = ieee80211_join_mesh,
3618         .leave_mesh = ieee80211_leave_mesh,
3619 #endif
3620         .change_bss = ieee80211_change_bss,
3621         .set_txq_params = ieee80211_set_txq_params,
3622         .set_monitor_channel = ieee80211_set_monitor_channel,
3623         .suspend = ieee80211_suspend,
3624         .resume = ieee80211_resume,
3625         .scan = ieee80211_scan,
3626         .sched_scan_start = ieee80211_sched_scan_start,
3627         .sched_scan_stop = ieee80211_sched_scan_stop,
3628         .auth = ieee80211_auth,
3629         .assoc = ieee80211_assoc,
3630         .deauth = ieee80211_deauth,
3631         .disassoc = ieee80211_disassoc,
3632         .join_ibss = ieee80211_join_ibss,
3633         .leave_ibss = ieee80211_leave_ibss,
3634         .set_mcast_rate = ieee80211_set_mcast_rate,
3635         .set_wiphy_params = ieee80211_set_wiphy_params,
3636         .set_tx_power = ieee80211_set_tx_power,
3637         .get_tx_power = ieee80211_get_tx_power,
3638         .set_wds_peer = ieee80211_set_wds_peer,
3639         .rfkill_poll = ieee80211_rfkill_poll,
3640         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3641         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3642         .set_power_mgmt = ieee80211_set_power_mgmt,
3643         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3644         .remain_on_channel = ieee80211_remain_on_channel,
3645         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3646         .mgmt_tx = ieee80211_mgmt_tx,
3647         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3648         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3649         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3650         .set_antenna = ieee80211_set_antenna,
3651         .get_antenna = ieee80211_get_antenna,
3652         .set_rekey_data = ieee80211_set_rekey_data,
3653         .tdls_oper = ieee80211_tdls_oper,
3654         .tdls_mgmt = ieee80211_tdls_mgmt,
3655         .probe_client = ieee80211_probe_client,
3656         .set_noack_map = ieee80211_set_noack_map,
3657 #ifdef CONFIG_PM
3658         .set_wakeup = ieee80211_set_wakeup,
3659 #endif
3660         .get_channel = ieee80211_cfg_get_channel,
3661         .start_radar_detection = ieee80211_start_radar_detection,
3662         .channel_switch = ieee80211_channel_switch,
3663         .set_qos_map = ieee80211_set_qos_map,
3664         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3665 };