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 #include "wme.h"
  24
  25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  26                                                 const char *name,
  27                                                 unsigned char name_assign_type,
  28                                                 enum nl80211_iftype type,
  29                                                 u32 *flags,
  30                                                 struct vif_params *params)
  31 {
  32         struct ieee80211_local *local = wiphy_priv(wiphy);
  33         struct wireless_dev *wdev;
  34         struct ieee80211_sub_if_data *sdata;
  35         int err;
  36
  37         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
  38         if (err)
  39                 return ERR_PTR(err);
  40
  41         if (type == NL80211_IFTYPE_MONITOR && flags) {
  42                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  43                 sdata->u.mntr_flags = *flags;
  44         }
  45
  46         return wdev;
  47 }
  48
  49 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  50 {
  51         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  52
  53         return 0;
  54 }
  55
  56 static int ieee80211_change_iface(struct wiphy *wiphy,
  57                                   struct net_device *dev,
  58                                   enum nl80211_iftype type, u32 *flags,
  59                                   struct vif_params *params)
  60 {
  61         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  62         int ret;
  63
  64         ret = ieee80211_if_change_type(sdata, type);
  65         if (ret)
  66                 return ret;
  67
  68         if (type == NL80211_IFTYPE_AP_VLAN &&
  69             params && params->use_4addr == 0)
  70                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  71         else if (type == NL80211_IFTYPE_STATION &&
  72                  params && params->use_4addr >= 0)
  73                 sdata->u.mgd.use_4addr = params->use_4addr;
  74
  75         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  76                 struct ieee80211_local *local = sdata->local;
  77
  78                 if (ieee80211_sdata_running(sdata)) {
  79                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
  80                                    MONITOR_FLAG_ACTIVE;
  81
  82                         /*
  83                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
  84                          * MONITOR_FLAG_ACTIVE to be changed while the
  85                          * interface is up.
  86                          * Else we would need to add a lot of cruft
  87                          * to update everything:
  88                          *      cooked_mntrs, monitor and all fif_* counters
  89                          *      reconfigure hardware
  90                          */
  91                         if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  92                                 return -EBUSY;
  93
  94                         ieee80211_adjust_monitor_flags(sdata, -1);
  95                         sdata->u.mntr_flags = *flags;
  96                         ieee80211_adjust_monitor_flags(sdata, 1);
  97
  98                         ieee80211_configure_filter(local);
  99                 } else {
 100                         /*
 101                          * Because the interface is down, ieee80211_do_stop
 102                          * and ieee80211_do_open take care of "everything"
 103                          * mentioned in the comment above.
 104                          */
 105                         sdata->u.mntr_flags = *flags;
 106                 }
 107         }
 108
 109         return 0;
 110 }
 111
 112 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 113                                       struct wireless_dev *wdev)
 114 {
 115         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 116         int ret;
 117
 118         mutex_lock(&sdata->local->chanctx_mtx);
 119         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 120         mutex_unlock(&sdata->local->chanctx_mtx);
 121         if (ret < 0)
 122                 return ret;
 123
 124         return ieee80211_do_open(wdev, true);
 125 }
 126
 127 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 128                                       struct wireless_dev *wdev)
 129 {
 130         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 131 }
 132
 133 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 134                                   struct net_device *dev,
 135                                   u16 noack_map)
 136 {
 137         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 138
 139         sdata->noack_map = noack_map;
 140         return 0;
 141 }
 142
 143 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 144                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 145                              struct key_params *params)
 146 {
 147         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 148         struct ieee80211_local *local = sdata->local;
 149         struct sta_info *sta = NULL;
 150         const struct ieee80211_cipher_scheme *cs = NULL;
 151         struct ieee80211_key *key;
 152         int err;
 153
 154         if (!ieee80211_sdata_running(sdata))
 155                 return -ENETDOWN;
 156
 157         /* reject WEP and TKIP keys if WEP failed to initialize */
 158         switch (params->cipher) {
 159         case WLAN_CIPHER_SUITE_WEP40:
 160         case WLAN_CIPHER_SUITE_TKIP:
 161         case WLAN_CIPHER_SUITE_WEP104:
 162                 if (IS_ERR(local->wep_tx_tfm))
 163                         return -EINVAL;
 164                 break;
 165         case WLAN_CIPHER_SUITE_CCMP:
 166         case WLAN_CIPHER_SUITE_CCMP_256:
 167         case WLAN_CIPHER_SUITE_AES_CMAC:
 168         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 169         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 170         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 171         case WLAN_CIPHER_SUITE_GCMP:
 172         case WLAN_CIPHER_SUITE_GCMP_256:
 173                 break;
 174         default:
 175                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 176                 break;
 177         }
 178
 179         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 180                                   params->key, params->seq_len, params->seq,
 181                                   cs);
 182         if (IS_ERR(key))
 183                 return PTR_ERR(key);
 184
 185         if (pairwise)
 186                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 187
 188         mutex_lock(&local->sta_mtx);
 189
 190         if (mac_addr) {
 191                 if (ieee80211_vif_is_mesh(&sdata->vif))
 192                         sta = sta_info_get(sdata, mac_addr);
 193                 else
 194                         sta = sta_info_get_bss(sdata, mac_addr);
 195                 /*
 196                  * The ASSOC test makes sure the driver is ready to
 197                  * receive the key. When wpa_supplicant has roamed
 198                  * using FT, it attempts to set the key before
 199                  * association has completed, this rejects that attempt
 200                  * so it will set the key again after association.
 201                  *
 202                  * TODO: accept the key if we have a station entry and
 203                  *       add it to the device after the station.
 204                  */
 205                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 206                         ieee80211_key_free_unused(key);
 207                         err = -ENOENT;
 208                         goto out_unlock;
 209                 }
 210         }
 211
 212         switch (sdata->vif.type) {
 213         case NL80211_IFTYPE_STATION:
 214                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 215                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 216                 break;
 217         case NL80211_IFTYPE_AP:
 218         case NL80211_IFTYPE_AP_VLAN:
 219                 /* Keys without a station are used for TX only */
 220                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 221                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 222                 break;
 223         case NL80211_IFTYPE_ADHOC:
 224                 /* no MFP (yet) */
 225                 break;
 226         case NL80211_IFTYPE_MESH_POINT:
 227 #ifdef CONFIG_MAC80211_MESH
 228                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 229                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 230                 break;
 231 #endif
 232         case NL80211_IFTYPE_WDS:
 233         case NL80211_IFTYPE_MONITOR:
 234         case NL80211_IFTYPE_P2P_DEVICE:
 235         case NL80211_IFTYPE_UNSPECIFIED:
 236         case NUM_NL80211_IFTYPES:
 237         case NL80211_IFTYPE_P2P_CLIENT:
 238         case NL80211_IFTYPE_P2P_GO:
 239         case NL80211_IFTYPE_OCB:
 240                 /* shouldn't happen */
 241                 WARN_ON_ONCE(1);
 242                 break;
 243         }
 244
 245         if (sta)
 246                 sta->cipher_scheme = cs;
 247
 248         err = ieee80211_key_link(key, sdata, sta);
 249
 250  out_unlock:
 251         mutex_unlock(&local->sta_mtx);
 252
 253         return err;
 254 }
 255
 256 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 257                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 258 {
 259         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 260         struct ieee80211_local *local = sdata->local;
 261         struct sta_info *sta;
 262         struct ieee80211_key *key = NULL;
 263         int ret;
 264
 265         mutex_lock(&local->sta_mtx);
 266         mutex_lock(&local->key_mtx);
 267
 268         if (mac_addr) {
 269                 ret = -ENOENT;
 270
 271                 sta = sta_info_get_bss(sdata, mac_addr);
 272                 if (!sta)
 273                         goto out_unlock;
 274
 275                 if (pairwise)
 276                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 277                 else
 278                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 279         } else
 280                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 281
 282         if (!key) {
 283                 ret = -ENOENT;
 284                 goto out_unlock;
 285         }
 286
 287         ieee80211_key_free(key, true);
 288
 289         ret = 0;
 290  out_unlock:
 291         mutex_unlock(&local->key_mtx);
 292         mutex_unlock(&local->sta_mtx);
 293
 294         return ret;
 295 }
 296
 297 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 298                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 299                              void *cookie,
 300                              void (*callback)(void *cookie,
 301                                               struct key_params *params))
 302 {
 303         struct ieee80211_sub_if_data *sdata;
 304         struct sta_info *sta = NULL;
 305         u8 seq[6] = {0};
 306         struct key_params params;
 307         struct ieee80211_key *key = NULL;
 308         u64 pn64;
 309         u32 iv32;
 310         u16 iv16;
 311         int err = -ENOENT;
 312
 313         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 314
 315         rcu_read_lock();
 316
 317         if (mac_addr) {
 318                 sta = sta_info_get_bss(sdata, mac_addr);
 319                 if (!sta)
 320                         goto out;
 321
 322                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 323                         key = rcu_dereference(sta->ptk[key_idx]);
 324                 else if (!pairwise &&
 325                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 326                         key = rcu_dereference(sta->gtk[key_idx]);
 327         } else
 328                 key = rcu_dereference(sdata->keys[key_idx]);
 329
 330         if (!key)
 331                 goto out;
 332
 333         memset(&params, 0, sizeof(params));
 334
 335         params.cipher = key->conf.cipher;
 336
 337         switch (key->conf.cipher) {
 338         case WLAN_CIPHER_SUITE_TKIP:
 339                 iv32 = key->u.tkip.tx.iv32;
 340                 iv16 = key->u.tkip.tx.iv16;
 341
 342                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 343                         drv_get_tkip_seq(sdata->local,
 344                                          key->conf.hw_key_idx,
 345                                          &iv32, &iv16);
 346
 347                 seq[0] = iv16 & 0xff;
 348                 seq[1] = (iv16 >> 8) & 0xff;
 349                 seq[2] = iv32 & 0xff;
 350                 seq[3] = (iv32 >> 8) & 0xff;
 351                 seq[4] = (iv32 >> 16) & 0xff;
 352                 seq[5] = (iv32 >> 24) & 0xff;
 353                 params.seq = seq;
 354                 params.seq_len = 6;
 355                 break;
 356         case WLAN_CIPHER_SUITE_CCMP:
 357         case WLAN_CIPHER_SUITE_CCMP_256:
 358                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 359                 seq[0] = pn64;
 360                 seq[1] = pn64 >> 8;
 361                 seq[2] = pn64 >> 16;
 362                 seq[3] = pn64 >> 24;
 363                 seq[4] = pn64 >> 32;
 364                 seq[5] = pn64 >> 40;
 365                 params.seq = seq;
 366                 params.seq_len = 6;
 367                 break;
 368         case WLAN_CIPHER_SUITE_AES_CMAC:
 369         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 370                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 371                 seq[0] = pn64;
 372                 seq[1] = pn64 >> 8;
 373                 seq[2] = pn64 >> 16;
 374                 seq[3] = pn64 >> 24;
 375                 seq[4] = pn64 >> 32;
 376                 seq[5] = pn64 >> 40;
 377                 params.seq = seq;
 378                 params.seq_len = 6;
 379                 break;
 380         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 381         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 382                 pn64 = atomic64_read(&key->u.aes_gmac.tx_pn);
 383                 seq[0] = pn64;
 384                 seq[1] = pn64 >> 8;
 385                 seq[2] = pn64 >> 16;
 386                 seq[3] = pn64 >> 24;
 387                 seq[4] = pn64 >> 32;
 388                 seq[5] = pn64 >> 40;
 389                 params.seq = seq;
 390                 params.seq_len = 6;
 391                 break;
 392         case WLAN_CIPHER_SUITE_GCMP:
 393         case WLAN_CIPHER_SUITE_GCMP_256:
 394                 pn64 = atomic64_read(&key->u.gcmp.tx_pn);
 395                 seq[0] = pn64;
 396                 seq[1] = pn64 >> 8;
 397                 seq[2] = pn64 >> 16;
 398                 seq[3] = pn64 >> 24;
 399                 seq[4] = pn64 >> 32;
 400                 seq[5] = pn64 >> 40;
 401                 params.seq = seq;
 402                 params.seq_len = 6;
 403                 break;
 404         }
 405
 406         params.key = key->conf.key;
 407         params.key_len = key->conf.keylen;
 408
 409         callback(cookie, &params);
 410         err = 0;
 411
 412  out:
 413         rcu_read_unlock();
 414         return err;
 415 }
 416
 417 static int ieee80211_config_default_key(struct wiphy *wiphy,
 418                                         struct net_device *dev,
 419                                         u8 key_idx, bool uni,
 420                                         bool multi)
 421 {
 422         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 423
 424         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 425
 426         return 0;
 427 }
 428
 429 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 430                                              struct net_device *dev,
 431                                              u8 key_idx)
 432 {
 433         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 434
 435         ieee80211_set_default_mgmt_key(sdata, key_idx);
 436
 437         return 0;
 438 }
 439
 440 void sta_set_rate_info_tx(struct sta_info *sta,
 441                           const struct ieee80211_tx_rate *rate,
 442                           struct rate_info *rinfo)
 443 {
 444         rinfo->flags = 0;
 445         if (rate->flags & IEEE80211_TX_RC_MCS) {
 446                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 447                 rinfo->mcs = rate->idx;
 448         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 449                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 450                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 451                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 452         } else {
 453                 struct ieee80211_supported_band *sband;
 454                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 455                 u16 brate;
 456
 457                 sband = sta->local->hw.wiphy->bands[
 458                                 ieee80211_get_sdata_band(sta->sdata)];
 459                 brate = sband->bitrates[rate->idx].bitrate;
 460                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 461         }
 462         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 463                 rinfo->bw = RATE_INFO_BW_40;
 464         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 465                 rinfo->bw = RATE_INFO_BW_80;
 466         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 467                 rinfo->bw = RATE_INFO_BW_160;
 468         else
 469                 rinfo->bw = RATE_INFO_BW_20;
 470         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 471                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 472 }
 473
 474 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 475 {
 476         rinfo->flags = 0;
 477
 478         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 479                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 480                 rinfo->mcs = sta->last_rx_rate_idx;
 481         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 482                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 483                 rinfo->nss = sta->last_rx_rate_vht_nss;
 484                 rinfo->mcs = sta->last_rx_rate_idx;
 485         } else {
 486                 struct ieee80211_supported_band *sband;
 487                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 488                 u16 brate;
 489
 490                 sband = sta->local->hw.wiphy->bands[
 491                                 ieee80211_get_sdata_band(sta->sdata)];
 492                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 493                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 494         }
 495
 496         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 497                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 498
 499         if (sta->last_rx_rate_flag & RX_FLAG_5MHZ)
 500                 rinfo->bw = RATE_INFO_BW_5;
 501         else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ)
 502                 rinfo->bw = RATE_INFO_BW_10;
 503         else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 504                 rinfo->bw = RATE_INFO_BW_40;
 505         else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
 506                 rinfo->bw = RATE_INFO_BW_80;
 507         else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
 508                 rinfo->bw = RATE_INFO_BW_160;
 509         else
 510                 rinfo->bw = RATE_INFO_BW_20;
 511 }
 512
 513 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 514                                   int idx, u8 *mac, struct station_info *sinfo)
 515 {
 516         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 517         struct ieee80211_local *local = sdata->local;
 518         struct sta_info *sta;
 519         int ret = -ENOENT;
 520
 521         mutex_lock(&local->sta_mtx);
 522
 523         sta = sta_info_get_by_idx(sdata, idx);
 524         if (sta) {
 525                 ret = 0;
 526                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 527                 sta_set_sinfo(sta, sinfo);
 528         }
 529
 530         mutex_unlock(&local->sta_mtx);
 531
 532         return ret;
 533 }
 534
 535 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 536                                  int idx, struct survey_info *survey)
 537 {
 538         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 539
 540         return drv_get_survey(local, idx, survey);
 541 }
 542
 543 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 544                                  const u8 *mac, struct station_info *sinfo)
 545 {
 546         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 547         struct ieee80211_local *local = sdata->local;
 548         struct sta_info *sta;
 549         int ret = -ENOENT;
 550
 551         mutex_lock(&local->sta_mtx);
 552
 553         sta = sta_info_get_bss(sdata, mac);
 554         if (sta) {
 555                 ret = 0;
 556                 sta_set_sinfo(sta, sinfo);
 557         }
 558
 559         mutex_unlock(&local->sta_mtx);
 560
 561         return ret;
 562 }
 563
 564 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 565                                          struct cfg80211_chan_def *chandef)
 566 {
 567         struct ieee80211_local *local = wiphy_priv(wiphy);
 568         struct ieee80211_sub_if_data *sdata;
 569         int ret = 0;
 570
 571         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 572                 return 0;
 573
 574         mutex_lock(&local->mtx);
 575         mutex_lock(&local->iflist_mtx);
 576         if (local->use_chanctx) {
 577                 sdata = rcu_dereference_protected(
 578                                 local->monitor_sdata,
 579                                 lockdep_is_held(&local->iflist_mtx));
 580                 if (sdata) {
 581                         ieee80211_vif_release_channel(sdata);
 582                         ret = ieee80211_vif_use_channel(sdata, chandef,
 583                                         IEEE80211_CHANCTX_EXCLUSIVE);
 584                 }
 585         } else if (local->open_count == local->monitors) {
 586                 local->_oper_chandef = *chandef;
 587                 ieee80211_hw_config(local, 0);
 588         }
 589
 590         if (ret == 0)
 591                 local->monitor_chandef = *chandef;
 592         mutex_unlock(&local->iflist_mtx);
 593         mutex_unlock(&local->mtx);
 594
 595         return ret;
 596 }
 597
 598 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 599                                     const u8 *resp, size_t resp_len,
 600                                     const struct ieee80211_csa_settings *csa)
 601 {
 602         struct probe_resp *new, *old;
 603
 604         if (!resp || !resp_len)
 605                 return 1;
 606
 607         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 608
 609         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 610         if (!new)
 611                 return -ENOMEM;
 612
 613         new->len = resp_len;
 614         memcpy(new->data, resp, resp_len);
 615
 616         if (csa)
 617                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 618                        csa->n_counter_offsets_presp *
 619                        sizeof(new->csa_counter_offsets[0]));
 620
 621         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 622         if (old)
 623                 kfree_rcu(old, rcu_head);
 624
 625         return 0;
 626 }
 627
 628 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 629                                    struct cfg80211_beacon_data *params,
 630                                    const struct ieee80211_csa_settings *csa)
 631 {
 632         struct beacon_data *new, *old;
 633         int new_head_len, new_tail_len;
 634         int size, err;
 635         u32 changed = BSS_CHANGED_BEACON;
 636
 637         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 638
 639
 640         /* Need to have a beacon head if we don't have one yet */
 641         if (!params->head && !old)
 642                 return -EINVAL;
 643
 644         /* new or old head? */
 645         if (params->head)
 646                 new_head_len = params->head_len;
 647         else
 648                 new_head_len = old->head_len;
 649
 650         /* new or old tail? */
 651         if (params->tail || !old)
 652                 /* params->tail_len will be zero for !params->tail */
 653                 new_tail_len = params->tail_len;
 654         else
 655                 new_tail_len = old->tail_len;
 656
 657         size = sizeof(*new) + new_head_len + new_tail_len;
 658
 659         new = kzalloc(size, GFP_KERNEL);
 660         if (!new)
 661                 return -ENOMEM;
 662
 663         /* start filling the new info now */
 664
 665         /*
 666          * pointers go into the block we allocated,
 667          * memory is | beacon_data | head | tail |
 668          */
 669         new->head = ((u8 *) new) + sizeof(*new);
 670         new->tail = new->head + new_head_len;
 671         new->head_len = new_head_len;
 672         new->tail_len = new_tail_len;
 673
 674         if (csa) {
 675                 new->csa_current_counter = csa->count;
 676                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 677                        csa->n_counter_offsets_beacon *
 678                        sizeof(new->csa_counter_offsets[0]));
 679         }
 680
 681         /* copy in head */
 682         if (params->head)
 683                 memcpy(new->head, params->head, new_head_len);
 684         else
 685                 memcpy(new->head, old->head, new_head_len);
 686
 687         /* copy in optional tail */
 688         if (params->tail)
 689                 memcpy(new->tail, params->tail, new_tail_len);
 690         else
 691                 if (old)
 692                         memcpy(new->tail, old->tail, new_tail_len);
 693
 694         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 695                                        params->probe_resp_len, csa);
 696         if (err < 0)
 697                 return err;
 698         if (err == 0)
 699                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 700
 701         rcu_assign_pointer(sdata->u.ap.beacon, new);
 702
 703         if (old)
 704                 kfree_rcu(old, rcu_head);
 705
 706         return changed;
 707 }
 708
 709 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 710                               struct cfg80211_ap_settings *params)
 711 {
 712         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 713         struct ieee80211_local *local = sdata->local;
 714         struct beacon_data *old;
 715         struct ieee80211_sub_if_data *vlan;
 716         u32 changed = BSS_CHANGED_BEACON_INT |
 717                       BSS_CHANGED_BEACON_ENABLED |
 718                       BSS_CHANGED_BEACON |
 719                       BSS_CHANGED_SSID |
 720                       BSS_CHANGED_P2P_PS |
 721                       BSS_CHANGED_TXPOWER;
 722         int err;
 723
 724         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 725         if (old)
 726                 return -EALREADY;
 727
 728         switch (params->smps_mode) {
 729         case NL80211_SMPS_OFF:
 730                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 731                 break;
 732         case NL80211_SMPS_STATIC:
 733                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 734                 break;
 735         case NL80211_SMPS_DYNAMIC:
 736                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 737                 break;
 738         default:
 739                 return -EINVAL;
 740         }
 741         sdata->needed_rx_chains = sdata->local->rx_chains;
 742
 743         mutex_lock(&local->mtx);
 744         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 745                                         IEEE80211_CHANCTX_SHARED);
 746         if (!err)
 747                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 748         mutex_unlock(&local->mtx);
 749         if (err)
 750                 return err;
 751
 752         /*
 753          * Apply control port protocol, this allows us to
 754          * not encrypt dynamic WEP control frames.
 755          */
 756         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 757         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 758         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 759                                                         &params->crypto,
 760                                                         sdata->vif.type);
 761
 762         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 763                 vlan->control_port_protocol =
 764                         params->crypto.control_port_ethertype;
 765                 vlan->control_port_no_encrypt =
 766                         params->crypto.control_port_no_encrypt;
 767                 vlan->encrypt_headroom =
 768                         ieee80211_cs_headroom(sdata->local,
 769                                               &params->crypto,
 770                                               vlan->vif.type);
 771         }
 772
 773         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 774         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 775         sdata->vif.bss_conf.enable_beacon = true;
 776
 777         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 778         if (params->ssid_len)
 779                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 780                        params->ssid_len);
 781         sdata->vif.bss_conf.hidden_ssid =
 782                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 783
 784         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 785                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 786         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 787                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 788         if (params->p2p_opp_ps)
 789                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 790                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 791
 792         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 793         if (err < 0) {
 794                 ieee80211_vif_release_channel(sdata);
 795                 return err;
 796         }
 797         changed |= err;
 798
 799         err = drv_start_ap(sdata->local, sdata);
 800         if (err) {
 801                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 802
 803                 if (old)
 804                         kfree_rcu(old, rcu_head);
 805                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 806                 ieee80211_vif_release_channel(sdata);
 807                 return err;
 808         }
 809
 810         ieee80211_recalc_dtim(local, sdata);
 811         ieee80211_bss_info_change_notify(sdata, changed);
 812
 813         netif_carrier_on(dev);
 814         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 815                 netif_carrier_on(vlan->dev);
 816
 817         return 0;
 818 }
 819
 820 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 821                                    struct cfg80211_beacon_data *params)
 822 {
 823         struct ieee80211_sub_if_data *sdata;
 824         struct beacon_data *old;
 825         int err;
 826
 827         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 828         sdata_assert_lock(sdata);
 829
 830         /* don't allow changing the beacon while CSA is in place - offset
 831          * of channel switch counter may change
 832          */
 833         if (sdata->vif.csa_active)
 834                 return -EBUSY;
 835
 836         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 837         if (!old)
 838                 return -ENOENT;
 839
 840         err = ieee80211_assign_beacon(sdata, params, NULL);
 841         if (err < 0)
 842                 return err;
 843         ieee80211_bss_info_change_notify(sdata, err);
 844         return 0;
 845 }
 846
 847 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 848 {
 849         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 850         struct ieee80211_sub_if_data *vlan;
 851         struct ieee80211_local *local = sdata->local;
 852         struct beacon_data *old_beacon;
 853         struct probe_resp *old_probe_resp;
 854         struct cfg80211_chan_def chandef;
 855
 856         sdata_assert_lock(sdata);
 857
 858         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 859         if (!old_beacon)
 860                 return -ENOENT;
 861         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 862
 863         /* abort any running channel switch */
 864         mutex_lock(&local->mtx);
 865         sdata->vif.csa_active = false;
 866         if (sdata->csa_block_tx) {
 867                 ieee80211_wake_vif_queues(local, sdata,
 868                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 869                 sdata->csa_block_tx = false;
 870         }
 871
 872         mutex_unlock(&local->mtx);
 873
 874         kfree(sdata->u.ap.next_beacon);
 875         sdata->u.ap.next_beacon = NULL;
 876
 877         /* turn off carrier for this interface and dependent VLANs */
 878         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 879                 netif_carrier_off(vlan->dev);
 880         netif_carrier_off(dev);
 881
 882         /* remove beacon and probe response */
 883         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 884         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 885         kfree_rcu(old_beacon, rcu_head);
 886         if (old_probe_resp)
 887                 kfree_rcu(old_probe_resp, rcu_head);
 888         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 889
 890         __sta_info_flush(sdata, true);
 891         ieee80211_free_keys(sdata, true);
 892
 893         sdata->vif.bss_conf.enable_beacon = false;
 894         sdata->vif.bss_conf.ssid_len = 0;
 895         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 896         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 897
 898         if (sdata->wdev.cac_started) {
 899                 chandef = sdata->vif.bss_conf.chandef;
 900                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 901                 cfg80211_cac_event(sdata->dev, &chandef,
 902                                    NL80211_RADAR_CAC_ABORTED,
 903                                    GFP_KERNEL);
 904         }
 905
 906         drv_stop_ap(sdata->local, sdata);
 907
 908         /* free all potentially still buffered bcast frames */
 909         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 910         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 911
 912         mutex_lock(&local->mtx);
 913         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 914         ieee80211_vif_release_channel(sdata);
 915         mutex_unlock(&local->mtx);
 916
 917         return 0;
 918 }
 919
 920 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 921 struct iapp_layer2_update {
 922         u8 da[ETH_ALEN];        /* broadcast */
 923         u8 sa[ETH_ALEN];        /* STA addr */
 924         __be16 len;             /* 6 */
 925         u8 dsap;                /* 0 */
 926         u8 ssap;                /* 0 */
 927         u8 control;
 928         u8 xid_info[3];
 929 } __packed;
 930
 931 static void ieee80211_send_layer2_update(struct sta_info *sta)
 932 {
 933         struct iapp_layer2_update *msg;
 934         struct sk_buff *skb;
 935
 936         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 937          * bridge devices */
 938
 939         skb = dev_alloc_skb(sizeof(*msg));
 940         if (!skb)
 941                 return;
 942         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 943
 944         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 945          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 946
 947         eth_broadcast_addr(msg->da);
 948         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 949         msg->len = htons(6);
 950         msg->dsap = 0;
 951         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 952         msg->control = 0xaf;    /* XID response lsb.1111F101.
 953                                  * F=0 (no poll command; unsolicited frame) */
 954         msg->xid_info[0] = 0x81;        /* XID format identifier */
 955         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 956         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 957
 958         skb->dev = sta->sdata->dev;
 959         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 960         memset(skb->cb, 0, sizeof(skb->cb));
 961         netif_rx_ni(skb);
 962 }
 963
 964 static int sta_apply_auth_flags(struct ieee80211_local *local,
 965                                 struct sta_info *sta,
 966                                 u32 mask, u32 set)
 967 {
 968         int ret;
 969
 970         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 971             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 972             !test_sta_flag(sta, WLAN_STA_AUTH)) {
 973                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 974                 if (ret)
 975                         return ret;
 976         }
 977
 978         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 979             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 980             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 981                 /*
 982                  * When peer becomes associated, init rate control as
 983                  * well. Some drivers require rate control initialized
 984                  * before drv_sta_state() is called.
 985                  */
 986                 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 987                         rate_control_rate_init(sta);
 988
 989                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 990                 if (ret)
 991                         return ret;
 992         }
 993
 994         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 995                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 996                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 997                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 998                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 999                 else
1000                         ret = 0;
1001                 if (ret)
1002                         return ret;
1003         }
1004
1005         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1006             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1007             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1008                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1009                 if (ret)
1010                         return ret;
1011         }
1012
1013         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1014             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1015             test_sta_flag(sta, WLAN_STA_AUTH)) {
1016                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1017                 if (ret)
1018                         return ret;
1019         }
1020
1021         return 0;
1022 }
1023
1024 static int sta_apply_parameters(struct ieee80211_local *local,
1025                                 struct sta_info *sta,
1026                                 struct station_parameters *params)
1027 {
1028         int ret = 0;
1029         struct ieee80211_supported_band *sband;
1030         struct ieee80211_sub_if_data *sdata = sta->sdata;
1031         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1032         u32 mask, set;
1033
1034         sband = local->hw.wiphy->bands[band];
1035
1036         mask = params->sta_flags_mask;
1037         set = params->sta_flags_set;
1038
1039         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1040                 /*
1041                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1042                  * API but must follow AUTHENTICATED for driver state.
1043                  */
1044                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1045                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1046                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1047                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1048         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1049                 /*
1050                  * TDLS -- everything follows authorized, but
1051                  * only becoming authorized is possible, not
1052                  * going back
1053                  */
1054                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1055                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1056                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1057                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1058                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1059                 }
1060         }
1061
1062         /* auth flags will be set later for TDLS stations */
1063         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1064                 ret = sta_apply_auth_flags(local, sta, mask, set);
1065                 if (ret)
1066                         return ret;
1067         }
1068
1069         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1070                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1071                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1072                 else
1073                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1074         }
1075
1076         if (mask & BIT(NL80211_STA_FLAG_WME))
1077                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1078
1079         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1080                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1081                 if (set & BIT(NL80211_STA_FLAG_MFP))
1082                         set_sta_flag(sta, WLAN_STA_MFP);
1083                 else
1084                         clear_sta_flag(sta, WLAN_STA_MFP);
1085         }
1086
1087         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1088                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1089                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1090                 else
1091                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1092         }
1093
1094         /* mark TDLS channel switch support, if the AP allows it */
1095         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1096             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1097             params->ext_capab_len >= 4 &&
1098             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1099                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1100
1101         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1102                 sta->sta.uapsd_queues = params->uapsd_queues;
1103                 sta->sta.max_sp = params->max_sp;
1104         }
1105
1106         /*
1107          * cfg80211 validates this (1-2007) and allows setting the AID
1108          * only when creating a new station entry
1109          */
1110         if (params->aid)
1111                 sta->sta.aid = params->aid;
1112
1113         /*
1114          * Some of the following updates would be racy if called on an
1115          * existing station, via ieee80211_change_station(). However,
1116          * all such changes are rejected by cfg80211 except for updates
1117          * changing the supported rates on an existing but not yet used
1118          * TDLS peer.
1119          */
1120
1121         if (params->listen_interval >= 0)
1122                 sta->listen_interval = params->listen_interval;
1123
1124         if (params->supported_rates) {
1125                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1126                                          sband, params->supported_rates,
1127                                          params->supported_rates_len,
1128                                          &sta->sta.supp_rates[band]);
1129         }
1130
1131         if (params->ht_capa)
1132                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1133                                                   params->ht_capa, sta);
1134
1135         if (params->vht_capa)
1136                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1137                                                     params->vht_capa, sta);
1138
1139         if (params->opmode_notif_used) {
1140                 /* returned value is only needed for rc update, but the
1141                  * rc isn't initialized here yet, so ignore it
1142                  */
1143                 __ieee80211_vht_handle_opmode(sdata, sta,
1144                                               params->opmode_notif,
1145                                               band, false);
1146         }
1147
1148         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1149 #ifdef CONFIG_MAC80211_MESH
1150                 u32 changed = 0;
1151
1152                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1153                         switch (params->plink_state) {
1154                         case NL80211_PLINK_ESTAB:
1155                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1156                                         changed = mesh_plink_inc_estab_count(
1157                                                         sdata);
1158                                 sta->plink_state = params->plink_state;
1159
1160                                 ieee80211_mps_sta_status_update(sta);
1161                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1162                                               sdata->u.mesh.mshcfg.power_mode);
1163                                 break;
1164                         case NL80211_PLINK_LISTEN:
1165                         case NL80211_PLINK_BLOCKED:
1166                         case NL80211_PLINK_OPN_SNT:
1167                         case NL80211_PLINK_OPN_RCVD:
1168                         case NL80211_PLINK_CNF_RCVD:
1169                         case NL80211_PLINK_HOLDING:
1170                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1171                                         changed = mesh_plink_dec_estab_count(
1172                                                         sdata);
1173                                 sta->plink_state = params->plink_state;
1174
1175                                 ieee80211_mps_sta_status_update(sta);
1176                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1177                                                 NL80211_MESH_POWER_UNKNOWN);
1178                                 break;
1179                         default:
1180                                 /*  nothing  */
1181                                 break;
1182                         }
1183                 }
1184
1185                 switch (params->plink_action) {
1186                 case NL80211_PLINK_ACTION_NO_ACTION:
1187                         /* nothing */
1188                         break;
1189                 case NL80211_PLINK_ACTION_OPEN:
1190                         changed |= mesh_plink_open(sta);
1191                         break;
1192                 case NL80211_PLINK_ACTION_BLOCK:
1193                         changed |= mesh_plink_block(sta);
1194                         break;
1195                 }
1196
1197                 if (params->local_pm)
1198                         changed |=
1199                               ieee80211_mps_set_sta_local_pm(sta,
1200                                                              params->local_pm);
1201                 ieee80211_mbss_info_change_notify(sdata, changed);
1202 #endif
1203         }
1204
1205         /* set the STA state after all sta info from usermode has been set */
1206         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1207                 ret = sta_apply_auth_flags(local, sta, mask, set);
1208                 if (ret)
1209                         return ret;
1210         }
1211
1212         return 0;
1213 }
1214
1215 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1216                                  const u8 *mac,
1217                                  struct station_parameters *params)
1218 {
1219         struct ieee80211_local *local = wiphy_priv(wiphy);
1220         struct sta_info *sta;
1221         struct ieee80211_sub_if_data *sdata;
1222         int err;
1223         int layer2_update;
1224
1225         if (params->vlan) {
1226                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1227
1228                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1229                     sdata->vif.type != NL80211_IFTYPE_AP)
1230                         return -EINVAL;
1231         } else
1232                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1233
1234         if (ether_addr_equal(mac, sdata->vif.addr))
1235                 return -EINVAL;
1236
1237         if (is_multicast_ether_addr(mac))
1238                 return -EINVAL;
1239
1240         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1241         if (!sta)
1242                 return -ENOMEM;
1243
1244         /*
1245          * defaults -- if userspace wants something else we'll
1246          * change it accordingly in sta_apply_parameters()
1247          */
1248         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1249                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1250                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1251         } else {
1252                 sta->sta.tdls = true;
1253         }
1254
1255         err = sta_apply_parameters(local, sta, params);
1256         if (err) {
1257                 sta_info_free(local, sta);
1258                 return err;
1259         }
1260
1261         /*
1262          * for TDLS, rate control should be initialized only when
1263          * rates are known and station is marked authorized
1264          */
1265         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1266                 rate_control_rate_init(sta);
1267
1268         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1269                 sdata->vif.type == NL80211_IFTYPE_AP;
1270
1271         err = sta_info_insert_rcu(sta);
1272         if (err) {
1273                 rcu_read_unlock();
1274                 return err;
1275         }
1276
1277         if (layer2_update)
1278                 ieee80211_send_layer2_update(sta);
1279
1280         rcu_read_unlock();
1281
1282         return 0;
1283 }
1284
1285 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1286                                  struct station_del_parameters *params)
1287 {
1288         struct ieee80211_sub_if_data *sdata;
1289
1290         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1291
1292         if (params->mac)
1293                 return sta_info_destroy_addr_bss(sdata, params->mac);
1294
1295         sta_info_flush(sdata);
1296         return 0;
1297 }
1298
1299 static int ieee80211_change_station(struct wiphy *wiphy,
1300                                     struct net_device *dev, const u8 *mac,
1301                                     struct station_parameters *params)
1302 {
1303         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1304         struct ieee80211_local *local = wiphy_priv(wiphy);
1305         struct sta_info *sta;
1306         struct ieee80211_sub_if_data *vlansdata;
1307         enum cfg80211_station_type statype;
1308         int err;
1309
1310         mutex_lock(&local->sta_mtx);
1311
1312         sta = sta_info_get_bss(sdata, mac);
1313         if (!sta) {
1314                 err = -ENOENT;
1315                 goto out_err;
1316         }
1317
1318         switch (sdata->vif.type) {
1319         case NL80211_IFTYPE_MESH_POINT:
1320                 if (sdata->u.mesh.user_mpm)
1321                         statype = CFG80211_STA_MESH_PEER_USER;
1322                 else
1323                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1324                 break;
1325         case NL80211_IFTYPE_ADHOC:
1326                 statype = CFG80211_STA_IBSS;
1327                 break;
1328         case NL80211_IFTYPE_STATION:
1329                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1330                         statype = CFG80211_STA_AP_STA;
1331                         break;
1332                 }
1333                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1334                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1335                 else
1336                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1337                 break;
1338         case NL80211_IFTYPE_AP:
1339         case NL80211_IFTYPE_AP_VLAN:
1340                 statype = CFG80211_STA_AP_CLIENT;
1341                 break;
1342         default:
1343                 err = -EOPNOTSUPP;
1344                 goto out_err;
1345         }
1346
1347         err = cfg80211_check_station_change(wiphy, params, statype);
1348         if (err)
1349                 goto out_err;
1350
1351         if (params->vlan && params->vlan != sta->sdata->dev) {
1352                 bool prev_4addr = false;
1353                 bool new_4addr = false;
1354
1355                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1356
1357                 if (params->vlan->ieee80211_ptr->use_4addr) {
1358                         if (vlansdata->u.vlan.sta) {
1359                                 err = -EBUSY;
1360                                 goto out_err;
1361                         }
1362
1363                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1364                         new_4addr = true;
1365                 }
1366
1367                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1368                     sta->sdata->u.vlan.sta) {
1369                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1370                         prev_4addr = true;
1371                 }
1372
1373                 sta->sdata = vlansdata;
1374
1375                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1376                     prev_4addr != new_4addr) {
1377                         if (new_4addr)
1378                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1379                         else
1380                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1381                 }
1382
1383                 ieee80211_send_layer2_update(sta);
1384         }
1385
1386         err = sta_apply_parameters(local, sta, params);
1387         if (err)
1388                 goto out_err;
1389
1390         mutex_unlock(&local->sta_mtx);
1391
1392         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1393              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1394             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1395             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1396             sta_info_tx_streams(sta) != 1) {
1397                 ht_dbg(sta->sdata,
1398                        "%pM just authorized and MIMO capable - update SMPS\n",
1399                        sta->sta.addr);
1400                 ieee80211_send_smps_action(sta->sdata,
1401                         sta->sdata->bss->req_smps,
1402                         sta->sta.addr,
1403                         sta->sdata->vif.bss_conf.bssid);
1404         }
1405
1406         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1407             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1408                 ieee80211_recalc_ps(local, -1);
1409                 ieee80211_recalc_ps_vif(sdata);
1410         }
1411
1412         return 0;
1413 out_err:
1414         mutex_unlock(&local->sta_mtx);
1415         return err;
1416 }
1417
1418 #ifdef CONFIG_MAC80211_MESH
1419 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1420                                const u8 *dst, const u8 *next_hop)
1421 {
1422         struct ieee80211_sub_if_data *sdata;
1423         struct mesh_path *mpath;
1424         struct sta_info *sta;
1425
1426         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1427
1428         rcu_read_lock();
1429         sta = sta_info_get(sdata, next_hop);
1430         if (!sta) {
1431                 rcu_read_unlock();
1432                 return -ENOENT;
1433         }
1434
1435         mpath = mesh_path_add(sdata, dst);
1436         if (IS_ERR(mpath)) {
1437                 rcu_read_unlock();
1438                 return PTR_ERR(mpath);
1439         }
1440
1441         mesh_path_fix_nexthop(mpath, sta);
1442
1443         rcu_read_unlock();
1444         return 0;
1445 }
1446
1447 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1448                                const u8 *dst)
1449 {
1450         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1451
1452         if (dst)
1453                 return mesh_path_del(sdata, dst);
1454
1455         mesh_path_flush_by_iface(sdata);
1456         return 0;
1457 }
1458
1459 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1460                                   const u8 *dst, const u8 *next_hop)
1461 {
1462         struct ieee80211_sub_if_data *sdata;
1463         struct mesh_path *mpath;
1464         struct sta_info *sta;
1465
1466         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1467
1468         rcu_read_lock();
1469
1470         sta = sta_info_get(sdata, next_hop);
1471         if (!sta) {
1472                 rcu_read_unlock();
1473                 return -ENOENT;
1474         }
1475
1476         mpath = mesh_path_lookup(sdata, dst);
1477         if (!mpath) {
1478                 rcu_read_unlock();
1479                 return -ENOENT;
1480         }
1481
1482         mesh_path_fix_nexthop(mpath, sta);
1483
1484         rcu_read_unlock();
1485         return 0;
1486 }
1487
1488 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1489                             struct mpath_info *pinfo)
1490 {
1491         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1492
1493         if (next_hop_sta)
1494                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1495         else
1496                 memset(next_hop, 0, ETH_ALEN);
1497
1498         memset(pinfo, 0, sizeof(*pinfo));
1499
1500         pinfo->generation = mesh_paths_generation;
1501
1502         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1503                         MPATH_INFO_SN |
1504                         MPATH_INFO_METRIC |
1505                         MPATH_INFO_EXPTIME |
1506                         MPATH_INFO_DISCOVERY_TIMEOUT |
1507                         MPATH_INFO_DISCOVERY_RETRIES |
1508                         MPATH_INFO_FLAGS;
1509
1510         pinfo->frame_qlen = mpath->frame_queue.qlen;
1511         pinfo->sn = mpath->sn;
1512         pinfo->metric = mpath->metric;
1513         if (time_before(jiffies, mpath->exp_time))
1514                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1515         pinfo->discovery_timeout =
1516                         jiffies_to_msecs(mpath->discovery_timeout);
1517         pinfo->discovery_retries = mpath->discovery_retries;
1518         if (mpath->flags & MESH_PATH_ACTIVE)
1519                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1520         if (mpath->flags & MESH_PATH_RESOLVING)
1521                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1522         if (mpath->flags & MESH_PATH_SN_VALID)
1523                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1524         if (mpath->flags & MESH_PATH_FIXED)
1525                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1526         if (mpath->flags & MESH_PATH_RESOLVED)
1527                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1528 }
1529
1530 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1531                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1532
1533 {
1534         struct ieee80211_sub_if_data *sdata;
1535         struct mesh_path *mpath;
1536
1537         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1538
1539         rcu_read_lock();
1540         mpath = mesh_path_lookup(sdata, dst);
1541         if (!mpath) {
1542                 rcu_read_unlock();
1543                 return -ENOENT;
1544         }
1545         memcpy(dst, mpath->dst, ETH_ALEN);
1546         mpath_set_pinfo(mpath, next_hop, pinfo);
1547         rcu_read_unlock();
1548         return 0;
1549 }
1550
1551 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1552                                 int idx, u8 *dst, u8 *next_hop,
1553                                 struct mpath_info *pinfo)
1554 {
1555         struct ieee80211_sub_if_data *sdata;
1556         struct mesh_path *mpath;
1557
1558         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1559
1560         rcu_read_lock();
1561         mpath = mesh_path_lookup_by_idx(sdata, idx);
1562         if (!mpath) {
1563                 rcu_read_unlock();
1564                 return -ENOENT;
1565         }
1566         memcpy(dst, mpath->dst, ETH_ALEN);
1567         mpath_set_pinfo(mpath, next_hop, pinfo);
1568         rcu_read_unlock();
1569         return 0;
1570 }
1571
1572 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1573                           struct mpath_info *pinfo)
1574 {
1575         memset(pinfo, 0, sizeof(*pinfo));
1576         memcpy(mpp, mpath->mpp, ETH_ALEN);
1577
1578         pinfo->generation = mpp_paths_generation;
1579 }
1580
1581 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1582                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1583
1584 {
1585         struct ieee80211_sub_if_data *sdata;
1586         struct mesh_path *mpath;
1587
1588         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1589
1590         rcu_read_lock();
1591         mpath = mpp_path_lookup(sdata, dst);
1592         if (!mpath) {
1593                 rcu_read_unlock();
1594                 return -ENOENT;
1595         }
1596         memcpy(dst, mpath->dst, ETH_ALEN);
1597         mpp_set_pinfo(mpath, mpp, pinfo);
1598         rcu_read_unlock();
1599         return 0;
1600 }
1601
1602 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1603                               int idx, u8 *dst, u8 *mpp,
1604                               struct mpath_info *pinfo)
1605 {
1606         struct ieee80211_sub_if_data *sdata;
1607         struct mesh_path *mpath;
1608
1609         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1610
1611         rcu_read_lock();
1612         mpath = mpp_path_lookup_by_idx(sdata, idx);
1613         if (!mpath) {
1614                 rcu_read_unlock();
1615                 return -ENOENT;
1616         }
1617         memcpy(dst, mpath->dst, ETH_ALEN);
1618         mpp_set_pinfo(mpath, mpp, pinfo);
1619         rcu_read_unlock();
1620         return 0;
1621 }
1622
1623 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1624                                 struct net_device *dev,
1625                                 struct mesh_config *conf)
1626 {
1627         struct ieee80211_sub_if_data *sdata;
1628         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1629
1630         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1631         return 0;
1632 }
1633
1634 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1635 {
1636         return (mask >> (parm-1)) & 0x1;
1637 }
1638
1639 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1640                 const struct mesh_setup *setup)
1641 {
1642         u8 *new_ie;
1643         const u8 *old_ie;
1644         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1645                                         struct ieee80211_sub_if_data, u.mesh);
1646
1647         /* allocate information elements */
1648         new_ie = NULL;
1649         old_ie = ifmsh->ie;
1650
1651         if (setup->ie_len) {
1652                 new_ie = kmemdup(setup->ie, setup->ie_len,
1653                                 GFP_KERNEL);
1654                 if (!new_ie)
1655                         return -ENOMEM;
1656         }
1657         ifmsh->ie_len = setup->ie_len;
1658         ifmsh->ie = new_ie;
1659         kfree(old_ie);
1660
1661         /* now copy the rest of the setup parameters */
1662         ifmsh->mesh_id_len = setup->mesh_id_len;
1663         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1664         ifmsh->mesh_sp_id = setup->sync_method;
1665         ifmsh->mesh_pp_id = setup->path_sel_proto;
1666         ifmsh->mesh_pm_id = setup->path_metric;
1667         ifmsh->user_mpm = setup->user_mpm;
1668         ifmsh->mesh_auth_id = setup->auth_id;
1669         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1670         if (setup->is_authenticated)
1671                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1672         if (setup->is_secure)
1673                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1674
1675         /* mcast rate setting in Mesh Node */
1676         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1677                                                 sizeof(setup->mcast_rate));
1678         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1679
1680         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1681         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1682
1683         return 0;
1684 }
1685
1686 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1687                                         struct net_device *dev, u32 mask,
1688                                         const struct mesh_config *nconf)
1689 {
1690         struct mesh_config *conf;
1691         struct ieee80211_sub_if_data *sdata;
1692         struct ieee80211_if_mesh *ifmsh;
1693
1694         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1695         ifmsh = &sdata->u.mesh;
1696
1697         /* Set the config options which we are interested in setting */
1698         conf = &(sdata->u.mesh.mshcfg);
1699         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1700                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1701         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1702                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1703         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1704                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1705         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1706                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1707         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1708                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1709         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1710                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1711         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1712                 conf->element_ttl = nconf->element_ttl;
1713         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1714                 if (ifmsh->user_mpm)
1715                         return -EBUSY;
1716                 conf->auto_open_plinks = nconf->auto_open_plinks;
1717         }
1718         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1719                 conf->dot11MeshNbrOffsetMaxNeighbor =
1720                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1721         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1722                 conf->dot11MeshHWMPmaxPREQretries =
1723                         nconf->dot11MeshHWMPmaxPREQretries;
1724         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1725                 conf->path_refresh_time = nconf->path_refresh_time;
1726         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1727                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1728         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1729                 conf->dot11MeshHWMPactivePathTimeout =
1730                         nconf->dot11MeshHWMPactivePathTimeout;
1731         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1732                 conf->dot11MeshHWMPpreqMinInterval =
1733                         nconf->dot11MeshHWMPpreqMinInterval;
1734         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1735                 conf->dot11MeshHWMPperrMinInterval =
1736                         nconf->dot11MeshHWMPperrMinInterval;
1737         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1738                            mask))
1739                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1740                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1741         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1742                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1743                 ieee80211_mesh_root_setup(ifmsh);
1744         }
1745         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1746                 /* our current gate announcement implementation rides on root
1747                  * announcements, so require this ifmsh to also be a root node
1748                  * */
1749                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1750                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1751                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1752                         ieee80211_mesh_root_setup(ifmsh);
1753                 }
1754                 conf->dot11MeshGateAnnouncementProtocol =
1755                         nconf->dot11MeshGateAnnouncementProtocol;
1756         }
1757         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1758                 conf->dot11MeshHWMPRannInterval =
1759                         nconf->dot11MeshHWMPRannInterval;
1760         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1761                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1762         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1763                 /* our RSSI threshold implementation is supported only for
1764                  * devices that report signal in dBm.
1765                  */
1766                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1767                         return -ENOTSUPP;
1768                 conf->rssi_threshold = nconf->rssi_threshold;
1769         }
1770         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1771                 conf->ht_opmode = nconf->ht_opmode;
1772                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1773                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1774         }
1775         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1776                 conf->dot11MeshHWMPactivePathToRootTimeout =
1777                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1778         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1779                 conf->dot11MeshHWMProotInterval =
1780                         nconf->dot11MeshHWMProotInterval;
1781         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1782                 conf->dot11MeshHWMPconfirmationInterval =
1783                         nconf->dot11MeshHWMPconfirmationInterval;
1784         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1785                 conf->power_mode = nconf->power_mode;
1786                 ieee80211_mps_local_status_update(sdata);
1787         }
1788         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1789                 conf->dot11MeshAwakeWindowDuration =
1790                         nconf->dot11MeshAwakeWindowDuration;
1791         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1792                 conf->plink_timeout = nconf->plink_timeout;
1793         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1794         return 0;
1795 }
1796
1797 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1798                                const struct mesh_config *conf,
1799                                const struct mesh_setup *setup)
1800 {
1801         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1802         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1803         int err;
1804
1805         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1806         err = copy_mesh_setup(ifmsh, setup);
1807         if (err)
1808                 return err;
1809
1810         /* can mesh use other SMPS modes? */
1811         sdata->smps_mode = IEEE80211_SMPS_OFF;
1812         sdata->needed_rx_chains = sdata->local->rx_chains;
1813
1814         mutex_lock(&sdata->local->mtx);
1815         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1816                                         IEEE80211_CHANCTX_SHARED);
1817         mutex_unlock(&sdata->local->mtx);
1818         if (err)
1819                 return err;
1820
1821         return ieee80211_start_mesh(sdata);
1822 }
1823
1824 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1825 {
1826         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1827
1828         ieee80211_stop_mesh(sdata);
1829         mutex_lock(&sdata->local->mtx);
1830         ieee80211_vif_release_channel(sdata);
1831         mutex_unlock(&sdata->local->mtx);
1832
1833         return 0;
1834 }
1835 #endif
1836
1837 static int ieee80211_change_bss(struct wiphy *wiphy,
1838                                 struct net_device *dev,
1839                                 struct bss_parameters *params)
1840 {
1841         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1842         enum ieee80211_band band;
1843         u32 changed = 0;
1844
1845         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1846                 return -ENOENT;
1847
1848         band = ieee80211_get_sdata_band(sdata);
1849
1850         if (params->use_cts_prot >= 0) {
1851                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1852                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1853         }
1854         if (params->use_short_preamble >= 0) {
1855                 sdata->vif.bss_conf.use_short_preamble =
1856                         params->use_short_preamble;
1857                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1858         }
1859
1860         if (!sdata->vif.bss_conf.use_short_slot &&
1861             band == IEEE80211_BAND_5GHZ) {
1862                 sdata->vif.bss_conf.use_short_slot = true;
1863                 changed |= BSS_CHANGED_ERP_SLOT;
1864         }
1865
1866         if (params->use_short_slot_time >= 0) {
1867                 sdata->vif.bss_conf.use_short_slot =
1868                         params->use_short_slot_time;
1869                 changed |= BSS_CHANGED_ERP_SLOT;
1870         }
1871
1872         if (params->basic_rates) {
1873                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1874                                          wiphy->bands[band],
1875                                          params->basic_rates,
1876                                          params->basic_rates_len,
1877                                          &sdata->vif.bss_conf.basic_rates);
1878                 changed |= BSS_CHANGED_BASIC_RATES;
1879         }
1880
1881         if (params->ap_isolate >= 0) {
1882                 if (params->ap_isolate)
1883                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1884                 else
1885                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1886         }
1887
1888         if (params->ht_opmode >= 0) {
1889                 sdata->vif.bss_conf.ht_operation_mode =
1890                         (u16) params->ht_opmode;
1891                 changed |= BSS_CHANGED_HT;
1892         }
1893
1894         if (params->p2p_ctwindow >= 0) {
1895                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1896                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1897                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1898                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1899                 changed |= BSS_CHANGED_P2P_PS;
1900         }
1901
1902         if (params->p2p_opp_ps > 0) {
1903                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1904                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1905                 changed |= BSS_CHANGED_P2P_PS;
1906         } else if (params->p2p_opp_ps == 0) {
1907                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1908                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1909                 changed |= BSS_CHANGED_P2P_PS;
1910         }
1911
1912         ieee80211_bss_info_change_notify(sdata, changed);
1913
1914         return 0;
1915 }
1916
1917 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1918                                     struct net_device *dev,
1919                                     struct ieee80211_txq_params *params)
1920 {
1921         struct ieee80211_local *local = wiphy_priv(wiphy);
1922         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1923         struct ieee80211_tx_queue_params p;
1924
1925         if (!local->ops->conf_tx)
1926                 return -EOPNOTSUPP;
1927
1928         if (local->hw.queues < IEEE80211_NUM_ACS)
1929                 return -EOPNOTSUPP;
1930
1931         memset(&p, 0, sizeof(p));
1932         p.aifs = params->aifs;
1933         p.cw_max = params->cwmax;
1934         p.cw_min = params->cwmin;
1935         p.txop = params->txop;
1936
1937         /*
1938          * Setting tx queue params disables u-apsd because it's only
1939          * called in master mode.
1940          */
1941         p.uapsd = false;
1942
1943         sdata->tx_conf[params->ac] = p;
1944         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1945                 wiphy_debug(local->hw.wiphy,
1946                             "failed to set TX queue parameters for AC %d\n",
1947                             params->ac);
1948                 return -EINVAL;
1949         }
1950
1951         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1952
1953         return 0;
1954 }
1955
1956 #ifdef CONFIG_PM
1957 static int ieee80211_suspend(struct wiphy *wiphy,
1958                              struct cfg80211_wowlan *wowlan)
1959 {
1960         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1961 }
1962
1963 static int ieee80211_resume(struct wiphy *wiphy)
1964 {
1965         return __ieee80211_resume(wiphy_priv(wiphy));
1966 }
1967 #else
1968 #define ieee80211_suspend NULL
1969 #define ieee80211_resume NULL
1970 #endif
1971
1972 static int ieee80211_scan(struct wiphy *wiphy,
1973                           struct cfg80211_scan_request *req)
1974 {
1975         struct ieee80211_sub_if_data *sdata;
1976
1977         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1978
1979         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1980         case NL80211_IFTYPE_STATION:
1981         case NL80211_IFTYPE_ADHOC:
1982         case NL80211_IFTYPE_MESH_POINT:
1983         case NL80211_IFTYPE_P2P_CLIENT:
1984         case NL80211_IFTYPE_P2P_DEVICE:
1985                 break;
1986         case NL80211_IFTYPE_P2P_GO:
1987                 if (sdata->local->ops->hw_scan)
1988                         break;
1989                 /*
1990                  * FIXME: implement NoA while scanning in software,
1991                  * for now fall through to allow scanning only when
1992                  * beaconing hasn't been configured yet
1993                  */
1994         case NL80211_IFTYPE_AP:
1995                 /*
1996                  * If the scan has been forced (and the driver supports
1997                  * forcing), don't care about being beaconing already.
1998                  * This will create problems to the attached stations (e.g. all
1999                  * the  frames sent while scanning on other channel will be
2000                  * lost)
2001                  */
2002                 if (sdata->u.ap.beacon &&
2003                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2004                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2005                         return -EOPNOTSUPP;
2006                 break;
2007         default:
2008                 return -EOPNOTSUPP;
2009         }
2010
2011         return ieee80211_request_scan(sdata, req);
2012 }
2013
2014 static int
2015 ieee80211_sched_scan_start(struct wiphy *wiphy,
2016                            struct net_device *dev,
2017                            struct cfg80211_sched_scan_request *req)
2018 {
2019         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2020
2021         if (!sdata->local->ops->sched_scan_start)
2022                 return -EOPNOTSUPP;
2023
2024         return ieee80211_request_sched_scan_start(sdata, req);
2025 }
2026
2027 static int
2028 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2029 {
2030         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2031
2032         if (!sdata->local->ops->sched_scan_stop)
2033                 return -EOPNOTSUPP;
2034
2035         return ieee80211_request_sched_scan_stop(sdata);
2036 }
2037
2038 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2039                           struct cfg80211_auth_request *req)
2040 {
2041         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2042 }
2043
2044 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2045                            struct cfg80211_assoc_request *req)
2046 {
2047         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2048 }
2049
2050 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2051                             struct cfg80211_deauth_request *req)
2052 {
2053         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2054 }
2055
2056 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2057                               struct cfg80211_disassoc_request *req)
2058 {
2059         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2060 }
2061
2062 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2063                                struct cfg80211_ibss_params *params)
2064 {
2065         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2066 }
2067
2068 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2069 {
2070         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2071 }
2072
2073 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2074                               struct ocb_setup *setup)
2075 {
2076         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2077 }
2078
2079 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2080 {
2081         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2082 }
2083
2084 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2085                                     int rate[IEEE80211_NUM_BANDS])
2086 {
2087         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2088
2089         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2090                sizeof(int) * IEEE80211_NUM_BANDS);
2091
2092         return 0;
2093 }
2094
2095 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2096 {
2097         struct ieee80211_local *local = wiphy_priv(wiphy);
2098         int err;
2099
2100         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2101                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2102
2103                 if (err)
2104                         return err;
2105         }
2106
2107         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2108             (changed & WIPHY_PARAM_DYN_ACK)) {
2109                 s16 coverage_class;
2110
2111                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2112                                         wiphy->coverage_class : -1;
2113                 err = drv_set_coverage_class(local, coverage_class);
2114
2115                 if (err)
2116                         return err;
2117         }
2118
2119         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2120                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2121
2122                 if (err)
2123                         return err;
2124         }
2125
2126         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2127                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2128                         return -EINVAL;
2129                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2130         }
2131         if (changed & WIPHY_PARAM_RETRY_LONG) {
2132                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2133                         return -EINVAL;
2134                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2135         }
2136         if (changed &
2137             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2138                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2139
2140         return 0;
2141 }
2142
2143 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2144                                   struct wireless_dev *wdev,
2145                                   enum nl80211_tx_power_setting type, int mbm)
2146 {
2147         struct ieee80211_local *local = wiphy_priv(wiphy);
2148         struct ieee80211_sub_if_data *sdata;
2149         enum nl80211_tx_power_setting txp_type = type;
2150         bool update_txp_type = false;
2151
2152         if (wdev) {
2153                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2154
2155                 switch (type) {
2156                 case NL80211_TX_POWER_AUTOMATIC:
2157                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2158                         txp_type = NL80211_TX_POWER_LIMITED;
2159                         break;
2160                 case NL80211_TX_POWER_LIMITED:
2161                 case NL80211_TX_POWER_FIXED:
2162                         if (mbm < 0 || (mbm % 100))
2163                                 return -EOPNOTSUPP;
2164                         sdata->user_power_level = MBM_TO_DBM(mbm);
2165                         break;
2166                 }
2167
2168                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2169                         update_txp_type = true;
2170                         sdata->vif.bss_conf.txpower_type = txp_type;
2171                 }
2172
2173                 ieee80211_recalc_txpower(sdata, update_txp_type);
2174
2175                 return 0;
2176         }
2177
2178         switch (type) {
2179         case NL80211_TX_POWER_AUTOMATIC:
2180                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2181                 txp_type = NL80211_TX_POWER_LIMITED;
2182                 break;
2183         case NL80211_TX_POWER_LIMITED:
2184         case NL80211_TX_POWER_FIXED:
2185                 if (mbm < 0 || (mbm % 100))
2186                         return -EOPNOTSUPP;
2187                 local->user_power_level = MBM_TO_DBM(mbm);
2188                 break;
2189         }
2190
2191         mutex_lock(&local->iflist_mtx);
2192         list_for_each_entry(sdata, &local->interfaces, list) {
2193                 sdata->user_power_level = local->user_power_level;
2194                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2195                         update_txp_type = true;
2196                 sdata->vif.bss_conf.txpower_type = txp_type;
2197         }
2198         list_for_each_entry(sdata, &local->interfaces, list)
2199                 ieee80211_recalc_txpower(sdata, update_txp_type);
2200         mutex_unlock(&local->iflist_mtx);
2201
2202         return 0;
2203 }
2204
2205 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2206                                   struct wireless_dev *wdev,
2207                                   int *dbm)
2208 {
2209         struct ieee80211_local *local = wiphy_priv(wiphy);
2210         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2211
2212         if (local->ops->get_txpower)
2213                 return drv_get_txpower(local, sdata, dbm);
2214
2215         if (!local->use_chanctx)
2216                 *dbm = local->hw.conf.power_level;
2217         else
2218                 *dbm = sdata->vif.bss_conf.txpower;
2219
2220         return 0;
2221 }
2222
2223 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2224                                   const u8 *addr)
2225 {
2226         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2227
2228         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2229
2230         return 0;
2231 }
2232
2233 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2234 {
2235         struct ieee80211_local *local = wiphy_priv(wiphy);
2236
2237         drv_rfkill_poll(local);
2238 }
2239
2240 #ifdef CONFIG_NL80211_TESTMODE
2241 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2242                                   struct wireless_dev *wdev,
2243                                   void *data, int len)
2244 {
2245         struct ieee80211_local *local = wiphy_priv(wiphy);
2246         struct ieee80211_vif *vif = NULL;
2247
2248         if (!local->ops->testmode_cmd)
2249                 return -EOPNOTSUPP;
2250
2251         if (wdev) {
2252                 struct ieee80211_sub_if_data *sdata;
2253
2254                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2255                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2256                         vif = &sdata->vif;
2257         }
2258
2259         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2260 }
2261
2262 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2263                                    struct sk_buff *skb,
2264                                    struct netlink_callback *cb,
2265                                    void *data, int len)
2266 {
2267         struct ieee80211_local *local = wiphy_priv(wiphy);
2268
2269         if (!local->ops->testmode_dump)
2270                 return -EOPNOTSUPP;
2271
2272         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2273 }
2274 #endif
2275
2276 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2277                                 enum ieee80211_smps_mode smps_mode)
2278 {
2279         struct sta_info *sta;
2280         enum ieee80211_smps_mode old_req;
2281
2282         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2283                 return -EINVAL;
2284
2285         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2286                 return 0;
2287
2288         old_req = sdata->u.ap.req_smps;
2289         sdata->u.ap.req_smps = smps_mode;
2290
2291         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2292         if (old_req == smps_mode ||
2293             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2294                 return 0;
2295
2296          /* If no associated stations, there's no need to do anything */
2297         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2298                 sdata->smps_mode = smps_mode;
2299                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2300                 return 0;
2301         }
2302
2303         ht_dbg(sdata,
2304                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2305                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2306
2307         mutex_lock(&sdata->local->sta_mtx);
2308         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2309                 /*
2310                  * Only stations associated to our AP and
2311                  * associated VLANs
2312                  */
2313                 if (sta->sdata->bss != &sdata->u.ap)
2314                         continue;
2315
2316                 /* This station doesn't support MIMO - skip it */
2317                 if (sta_info_tx_streams(sta) == 1)
2318                         continue;
2319
2320                 /*
2321                  * Don't wake up a STA just to send the action frame
2322                  * unless we are getting more restrictive.
2323                  */
2324                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2325                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2326                                                    smps_mode)) {
2327                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2328                                sta->sta.addr);
2329                         continue;
2330                 }
2331
2332                 /*
2333                  * If the STA is not authorized, wait until it gets
2334                  * authorized and the action frame will be sent then.
2335                  */
2336                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2337                         continue;
2338
2339                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2340                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2341                                            sdata->vif.bss_conf.bssid);
2342         }
2343         mutex_unlock(&sdata->local->sta_mtx);
2344
2345         sdata->smps_mode = smps_mode;
2346         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2347
2348         return 0;
2349 }
2350
2351 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2352                                  enum ieee80211_smps_mode smps_mode)
2353 {
2354         const u8 *ap;
2355         enum ieee80211_smps_mode old_req;
2356         int err;
2357
2358         lockdep_assert_held(&sdata->wdev.mtx);
2359
2360         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2361                 return -EINVAL;
2362
2363         old_req = sdata->u.mgd.req_smps;
2364         sdata->u.mgd.req_smps = smps_mode;
2365
2366         if (old_req == smps_mode &&
2367             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2368                 return 0;
2369
2370         /*
2371          * If not associated, or current association is not an HT
2372          * association, there's no need to do anything, just store
2373          * the new value until we associate.
2374          */
2375         if (!sdata->u.mgd.associated ||
2376             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2377                 return 0;
2378
2379         ap = sdata->u.mgd.associated->bssid;
2380
2381         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2382                 if (sdata->u.mgd.powersave)
2383                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2384                 else
2385                         smps_mode = IEEE80211_SMPS_OFF;
2386         }
2387
2388         /* send SM PS frame to AP */
2389         err = ieee80211_send_smps_action(sdata, smps_mode,
2390                                          ap, ap);
2391         if (err)
2392                 sdata->u.mgd.req_smps = old_req;
2393
2394         return err;
2395 }
2396
2397 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2398                                     bool enabled, int timeout)
2399 {
2400         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2401         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2402
2403         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2404                 return -EOPNOTSUPP;
2405
2406         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2407                 return -EOPNOTSUPP;
2408
2409         if (enabled == sdata->u.mgd.powersave &&
2410             timeout == local->dynamic_ps_forced_timeout)
2411                 return 0;
2412
2413         sdata->u.mgd.powersave = enabled;
2414         local->dynamic_ps_forced_timeout = timeout;
2415
2416         /* no change, but if automatic follow powersave */
2417         sdata_lock(sdata);
2418         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2419         sdata_unlock(sdata);
2420
2421         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2422                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2423
2424         ieee80211_recalc_ps(local, -1);
2425         ieee80211_recalc_ps_vif(sdata);
2426
2427         return 0;
2428 }
2429
2430 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2431                                          struct net_device *dev,
2432                                          s32 rssi_thold, u32 rssi_hyst)
2433 {
2434         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2435         struct ieee80211_vif *vif = &sdata->vif;
2436         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2437
2438         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2439             rssi_hyst == bss_conf->cqm_rssi_hyst)
2440                 return 0;
2441
2442         bss_conf->cqm_rssi_thold = rssi_thold;
2443         bss_conf->cqm_rssi_hyst = rssi_hyst;
2444
2445         /* tell the driver upon association, unless already associated */
2446         if (sdata->u.mgd.associated &&
2447             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2448                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2449
2450         return 0;
2451 }
2452
2453 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2454                                       struct net_device *dev,
2455                                       const u8 *addr,
2456                                       const struct cfg80211_bitrate_mask *mask)
2457 {
2458         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2459         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2460         int i, ret;
2461
2462         if (!ieee80211_sdata_running(sdata))
2463                 return -ENETDOWN;
2464
2465         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2466                 ret = drv_set_bitrate_mask(local, sdata, mask);
2467                 if (ret)
2468                         return ret;
2469         }
2470
2471         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2472                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2473                 int j;
2474
2475                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2476                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2477                        sizeof(mask->control[i].ht_mcs));
2478
2479                 sdata->rc_has_mcs_mask[i] = false;
2480                 if (!sband)
2481                         continue;
2482
2483                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2484                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2485                                 sdata->rc_has_mcs_mask[i] = true;
2486                                 break;
2487                         }
2488         }
2489
2490         return 0;
2491 }
2492
2493 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2494                                            struct ieee80211_roc_work *new_roc,
2495                                            struct ieee80211_roc_work *cur_roc)
2496 {
2497         unsigned long j = jiffies;
2498         unsigned long cur_roc_end = cur_roc->hw_start_time +
2499                                     msecs_to_jiffies(cur_roc->duration);
2500         struct ieee80211_roc_work *next_roc;
2501         int new_dur;
2502
2503         if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2504                 return false;
2505
2506         if (time_after(j + IEEE80211_ROC_MIN_LEFT, cur_roc_end))
2507                 return false;
2508
2509         ieee80211_handle_roc_started(new_roc);
2510
2511         new_dur = new_roc->duration - jiffies_to_msecs(cur_roc_end - j);
2512
2513         /* cur_roc is long enough - add new_roc to the dependents list. */
2514         if (new_dur <= 0) {
2515                 list_add_tail(&new_roc->list, &cur_roc->dependents);
2516                 return true;
2517         }
2518
2519         new_roc->duration = new_dur;
2520
2521         /*
2522          * if cur_roc was already coalesced before, we might
2523          * want to extend the next roc instead of adding
2524          * a new one.
2525          */
2526         next_roc = list_entry(cur_roc->list.next,
2527                               struct ieee80211_roc_work, list);
2528         if (&next_roc->list != &local->roc_list &&
2529             next_roc->chan == new_roc->chan &&
2530             next_roc->sdata == new_roc->sdata &&
2531             !WARN_ON(next_roc->started)) {
2532                 list_add_tail(&new_roc->list, &next_roc->dependents);
2533                 next_roc->duration = max(next_roc->duration,
2534                                          new_roc->duration);
2535                 next_roc->type = max(next_roc->type, new_roc->type);
2536                 return true;
2537         }
2538
2539         /* add right after cur_roc */
2540         list_add(&new_roc->list, &cur_roc->list);
2541
2542         return true;
2543 }
2544
2545 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2546                                     struct ieee80211_sub_if_data *sdata,
2547                                     struct ieee80211_channel *channel,
2548                                     unsigned int duration, u64 *cookie,
2549                                     struct sk_buff *txskb,
2550                                     enum ieee80211_roc_type type)
2551 {
2552         struct ieee80211_roc_work *roc, *tmp;
2553         bool queued = false;
2554         int ret;
2555
2556         lockdep_assert_held(&local->mtx);
2557
2558         if (local->use_chanctx && !local->ops->remain_on_channel)
2559                 return -EOPNOTSUPP;
2560
2561         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2562         if (!roc)
2563                 return -ENOMEM;
2564
2565         /*
2566          * If the duration is zero, then the driver
2567          * wouldn't actually do anything. Set it to
2568          * 10 for now.
2569          *
2570          * TODO: cancel the off-channel operation
2571          *       when we get the SKB's TX status and
2572          *       the wait time was zero before.
2573          */
2574         if (!duration)
2575                 duration = 10;
2576
2577         roc->chan = channel;
2578         roc->duration = duration;
2579         roc->req_duration = duration;
2580         roc->frame = txskb;
2581         roc->type = type;
2582         roc->mgmt_tx_cookie = (unsigned long)txskb;
2583         roc->sdata = sdata;
2584         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2585         INIT_LIST_HEAD(&roc->dependents);
2586
2587         /*
2588          * cookie is either the roc cookie (for normal roc)
2589          * or the SKB (for mgmt TX)
2590          */
2591         if (!txskb) {
2592                 /* local->mtx protects this */
2593                 local->roc_cookie_counter++;
2594                 roc->cookie = local->roc_cookie_counter;
2595                 /* wow, you wrapped 64 bits ... more likely a bug */
2596                 if (WARN_ON(roc->cookie == 0)) {
2597                         roc->cookie = 1;
2598                         local->roc_cookie_counter++;
2599                 }
2600                 *cookie = roc->cookie;
2601         } else {
2602                 *cookie = (unsigned long)txskb;
2603         }
2604
2605         /* if there's one pending or we're scanning, queue this one */
2606         if (!list_empty(&local->roc_list) ||
2607             local->scanning || ieee80211_is_radar_required(local))
2608                 goto out_check_combine;
2609
2610         /* if not HW assist, just queue & schedule work */
2611         if (!local->ops->remain_on_channel) {
2612                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2613                 goto out_queue;
2614         }
2615
2616         /* otherwise actually kick it off here (for error handling) */
2617
2618         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2619         if (ret) {
2620                 kfree(roc);
2621                 return ret;
2622         }
2623
2624         roc->started = true;
2625         goto out_queue;
2626
2627  out_check_combine:
2628         list_for_each_entry(tmp, &local->roc_list, list) {
2629                 if (tmp->chan != channel || tmp->sdata != sdata)
2630                         continue;
2631
2632                 /*
2633                  * Extend this ROC if possible:
2634                  *
2635                  * If it hasn't started yet, just increase the duration
2636                  * and add the new one to the list of dependents.
2637                  * If the type of the new ROC has higher priority, modify the
2638                  * type of the previous one to match that of the new one.
2639                  */
2640                 if (!tmp->started) {
2641                         list_add_tail(&roc->list, &tmp->dependents);
2642                         tmp->duration = max(tmp->duration, roc->duration);
2643                         tmp->type = max(tmp->type, roc->type);
2644                         queued = true;
2645                         break;
2646                 }
2647
2648                 /* If it has already started, it's more difficult ... */
2649                 if (local->ops->remain_on_channel) {
2650                         /*
2651                          * In the offloaded ROC case, if it hasn't begun, add
2652                          * this new one to the dependent list to be handled
2653                          * when the master one begins. If it has begun,
2654                          * check that there's still a minimum time left and
2655                          * if so, start this one, transmitting the frame, but
2656                          * add it to the list directly after this one with
2657                          * a reduced time so we'll ask the driver to execute
2658                          * it right after finishing the previous one, in the
2659                          * hope that it'll also be executed right afterwards,
2660                          * effectively extending the old one.
2661                          * If there's no minimum time left, just add it to the
2662                          * normal list.
2663                          * TODO: the ROC type is ignored here, assuming that it
2664                          * is better to immediately use the current ROC.
2665                          */
2666                         if (!tmp->hw_begun) {
2667                                 list_add_tail(&roc->list, &tmp->dependents);
2668                                 queued = true;
2669                                 break;
2670                         }
2671
2672                         if (ieee80211_coalesce_started_roc(local, roc, tmp))
2673                                 queued = true;
2674                 } else if (del_timer_sync(&tmp->work.timer)) {
2675                         unsigned long new_end;
2676
2677                         /*
2678                          * In the software ROC case, cancel the timer, if
2679                          * that fails then the finish work is already
2680                          * queued/pending and thus we queue the new ROC
2681                          * normally, if that succeeds then we can extend
2682                          * the timer duration and TX the frame (if any.)
2683                          */
2684
2685                         list_add_tail(&roc->list, &tmp->dependents);
2686                         queued = true;
2687
2688                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2689
2690                         /* ok, it was started & we canceled timer */
2691                         if (time_after(new_end, tmp->work.timer.expires))
2692                                 mod_timer(&tmp->work.timer, new_end);
2693                         else
2694                                 add_timer(&tmp->work.timer);
2695
2696                         ieee80211_handle_roc_started(roc);
2697                 }
2698                 break;
2699         }
2700
2701  out_queue:
2702         if (!queued)
2703                 list_add_tail(&roc->list, &local->roc_list);
2704
2705         return 0;
2706 }
2707
2708 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2709                                        struct wireless_dev *wdev,
2710                                        struct ieee80211_channel *chan,
2711                                        unsigned int duration,
2712                                        u64 *cookie)
2713 {
2714         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2715         struct ieee80211_local *local = sdata->local;
2716         int ret;
2717
2718         mutex_lock(&local->mtx);
2719         ret = ieee80211_start_roc_work(local, sdata, chan,
2720                                        duration, cookie, NULL,
2721                                        IEEE80211_ROC_TYPE_NORMAL);
2722         mutex_unlock(&local->mtx);
2723
2724         return ret;
2725 }
2726
2727 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2728                                 u64 cookie, bool mgmt_tx)
2729 {
2730         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2731         int ret;
2732
2733         mutex_lock(&local->mtx);
2734         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2735                 struct ieee80211_roc_work *dep, *tmp2;
2736
2737                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2738                         if (!mgmt_tx && dep->cookie != cookie)
2739                                 continue;
2740                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2741                                 continue;
2742                         /* found dependent item -- just remove it */
2743                         list_del(&dep->list);
2744                         mutex_unlock(&local->mtx);
2745
2746                         ieee80211_roc_notify_destroy(dep, true);
2747                         return 0;
2748                 }
2749
2750                 if (!mgmt_tx && roc->cookie != cookie)
2751                         continue;
2752                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2753                         continue;
2754
2755                 found = roc;
2756                 break;
2757         }
2758
2759         if (!found) {
2760                 mutex_unlock(&local->mtx);
2761                 return -ENOENT;
2762         }
2763
2764         /*
2765          * We found the item to cancel, so do that. Note that it
2766          * may have dependents, which we also cancel (and send
2767          * the expired signal for.) Not doing so would be quite
2768          * tricky here, but we may need to fix it later.
2769          */
2770
2771         if (local->ops->remain_on_channel) {
2772                 if (found->started) {
2773                         ret = drv_cancel_remain_on_channel(local);
2774                         if (WARN_ON_ONCE(ret)) {
2775                                 mutex_unlock(&local->mtx);
2776                                 return ret;
2777                         }
2778                 }
2779
2780                 list_del(&found->list);
2781
2782                 if (found->started)
2783                         ieee80211_start_next_roc(local);
2784                 mutex_unlock(&local->mtx);
2785
2786                 ieee80211_roc_notify_destroy(found, true);
2787         } else {
2788                 /* work may be pending so use it all the time */
2789                 found->abort = true;
2790                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2791
2792                 mutex_unlock(&local->mtx);
2793
2794                 /* work will clean up etc */
2795                 flush_delayed_work(&found->work);
2796                 WARN_ON(!found->to_be_freed);
2797                 kfree(found);
2798         }
2799
2800         return 0;
2801 }
2802
2803 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2804                                               struct wireless_dev *wdev,
2805                                               u64 cookie)
2806 {
2807         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2808         struct ieee80211_local *local = sdata->local;
2809
2810         return ieee80211_cancel_roc(local, cookie, false);
2811 }
2812
2813 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2814                                            struct net_device *dev,
2815                                            struct cfg80211_chan_def *chandef,
2816                                            u32 cac_time_ms)
2817 {
2818         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2819         struct ieee80211_local *local = sdata->local;
2820         int err;
2821
2822         mutex_lock(&local->mtx);
2823         if (!list_empty(&local->roc_list) || local->scanning) {
2824                 err = -EBUSY;
2825                 goto out_unlock;
2826         }
2827
2828         /* whatever, but channel contexts should not complain about that one */
2829         sdata->smps_mode = IEEE80211_SMPS_OFF;
2830         sdata->needed_rx_chains = local->rx_chains;
2831
2832         err = ieee80211_vif_use_channel(sdata, chandef,
2833                                         IEEE80211_CHANCTX_SHARED);
2834         if (err)
2835                 goto out_unlock;
2836
2837         ieee80211_queue_delayed_work(&sdata->local->hw,
2838                                      &sdata->dfs_cac_timer_work,
2839                                      msecs_to_jiffies(cac_time_ms));
2840
2841  out_unlock:
2842         mutex_unlock(&local->mtx);
2843         return err;
2844 }
2845
2846 static struct cfg80211_beacon_data *
2847 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2848 {
2849         struct cfg80211_beacon_data *new_beacon;
2850         u8 *pos;
2851         int len;
2852
2853         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2854               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2855               beacon->probe_resp_len;
2856
2857         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2858         if (!new_beacon)
2859                 return NULL;
2860
2861         pos = (u8 *)(new_beacon + 1);
2862         if (beacon->head_len) {
2863                 new_beacon->head_len = beacon->head_len;
2864                 new_beacon->head = pos;
2865                 memcpy(pos, beacon->head, beacon->head_len);
2866                 pos += beacon->head_len;
2867         }
2868         if (beacon->tail_len) {
2869                 new_beacon->tail_len = beacon->tail_len;
2870                 new_beacon->tail = pos;
2871                 memcpy(pos, beacon->tail, beacon->tail_len);
2872                 pos += beacon->tail_len;
2873         }
2874         if (beacon->beacon_ies_len) {
2875                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2876                 new_beacon->beacon_ies = pos;
2877                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2878                 pos += beacon->beacon_ies_len;
2879         }
2880         if (beacon->proberesp_ies_len) {
2881                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2882                 new_beacon->proberesp_ies = pos;
2883                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2884                 pos += beacon->proberesp_ies_len;
2885         }
2886         if (beacon->assocresp_ies_len) {
2887                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2888                 new_beacon->assocresp_ies = pos;
2889                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2890                 pos += beacon->assocresp_ies_len;
2891         }
2892         if (beacon->probe_resp_len) {
2893                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2894                 beacon->probe_resp = pos;
2895                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2896                 pos += beacon->probe_resp_len;
2897         }
2898
2899         return new_beacon;
2900 }
2901
2902 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2903 {
2904         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2905
2906         ieee80211_queue_work(&sdata->local->hw,
2907                              &sdata->csa_finalize_work);
2908 }
2909 EXPORT_SYMBOL(ieee80211_csa_finish);
2910
2911 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2912                                           u32 *changed)
2913 {
2914         int err;
2915
2916         switch (sdata->vif.type) {
2917         case NL80211_IFTYPE_AP:
2918                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2919                                               NULL);
2920                 kfree(sdata->u.ap.next_beacon);
2921                 sdata->u.ap.next_beacon = NULL;
2922
2923                 if (err < 0)
2924                         return err;
2925                 *changed |= err;
2926                 break;
2927         case NL80211_IFTYPE_ADHOC:
2928                 err = ieee80211_ibss_finish_csa(sdata);
2929                 if (err < 0)
2930                         return err;
2931                 *changed |= err;
2932                 break;
2933 #ifdef CONFIG_MAC80211_MESH
2934         case NL80211_IFTYPE_MESH_POINT:
2935                 err = ieee80211_mesh_finish_csa(sdata);
2936                 if (err < 0)
2937                         return err;
2938                 *changed |= err;
2939                 break;
2940 #endif
2941         default:
2942                 WARN_ON(1);
2943                 return -EINVAL;
2944         }
2945
2946         return 0;
2947 }
2948
2949 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2950 {
2951         struct ieee80211_local *local = sdata->local;
2952         u32 changed = 0;
2953         int err;
2954
2955         sdata_assert_lock(sdata);
2956         lockdep_assert_held(&local->mtx);
2957         lockdep_assert_held(&local->chanctx_mtx);
2958
2959         /*
2960          * using reservation isn't immediate as it may be deferred until later
2961          * with multi-vif. once reservation is complete it will re-schedule the
2962          * work with no reserved_chanctx so verify chandef to check if it
2963          * completed successfully
2964          */
2965
2966         if (sdata->reserved_chanctx) {
2967                 /*
2968                  * with multi-vif csa driver may call ieee80211_csa_finish()
2969                  * many times while waiting for other interfaces to use their
2970                  * reservations
2971                  */
2972                 if (sdata->reserved_ready)
2973                         return 0;
2974
2975                 return ieee80211_vif_use_reserved_context(sdata);
2976         }
2977
2978         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2979                                         &sdata->csa_chandef))
2980                 return -EINVAL;
2981
2982         sdata->vif.csa_active = false;
2983
2984         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2985         if (err)
2986                 return err;
2987
2988         ieee80211_bss_info_change_notify(sdata, changed);
2989
2990         if (sdata->csa_block_tx) {
2991                 ieee80211_wake_vif_queues(local, sdata,
2992                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2993                 sdata->csa_block_tx = false;
2994         }
2995
2996         err = drv_post_channel_switch(sdata);
2997         if (err)
2998                 return err;
2999
3000         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3001
3002         return 0;
3003 }
3004
3005 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3006 {
3007         if (__ieee80211_csa_finalize(sdata)) {
3008                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3009                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3010                                     GFP_KERNEL);
3011         }
3012 }
3013
3014 void ieee80211_csa_finalize_work(struct work_struct *work)
3015 {
3016         struct ieee80211_sub_if_data *sdata =
3017                 container_of(work, struct ieee80211_sub_if_data,
3018                              csa_finalize_work);
3019         struct ieee80211_local *local = sdata->local;
3020
3021         sdata_lock(sdata);
3022         mutex_lock(&local->mtx);
3023         mutex_lock(&local->chanctx_mtx);
3024
3025         /* AP might have been stopped while waiting for the lock. */
3026         if (!sdata->vif.csa_active)
3027                 goto unlock;
3028
3029         if (!ieee80211_sdata_running(sdata))
3030                 goto unlock;
3031
3032         ieee80211_csa_finalize(sdata);
3033
3034 unlock:
3035         mutex_unlock(&local->chanctx_mtx);
3036         mutex_unlock(&local->mtx);
3037         sdata_unlock(sdata);
3038 }
3039
3040 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3041                                     struct cfg80211_csa_settings *params,
3042                                     u32 *changed)
3043 {
3044         struct ieee80211_csa_settings csa = {};
3045         int err;
3046
3047         switch (sdata->vif.type) {
3048         case NL80211_IFTYPE_AP:
3049                 sdata->u.ap.next_beacon =
3050                         cfg80211_beacon_dup(&params->beacon_after);
3051                 if (!sdata->u.ap.next_beacon)
3052                         return -ENOMEM;
3053
3054                 /*
3055                  * With a count of 0, we don't have to wait for any
3056                  * TBTT before switching, so complete the CSA
3057                  * immediately.  In theory, with a count == 1 we
3058                  * should delay the switch until just before the next
3059                  * TBTT, but that would complicate things so we switch
3060                  * immediately too.  If we would delay the switch
3061                  * until the next TBTT, we would have to set the probe
3062                  * response here.
3063                  *
3064                  * TODO: A channel switch with count <= 1 without
3065                  * sending a CSA action frame is kind of useless,
3066                  * because the clients won't know we're changing
3067                  * channels.  The action frame must be implemented
3068                  * either here or in the userspace.
3069                  */
3070                 if (params->count <= 1)
3071                         break;
3072
3073                 if ((params->n_counter_offsets_beacon >
3074                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3075                     (params->n_counter_offsets_presp >
3076                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3077                         return -EINVAL;
3078
3079                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3080                 csa.counter_offsets_presp = params->counter_offsets_presp;
3081                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3082                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3083                 csa.count = params->count;
3084
3085                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3086                 if (err < 0) {
3087                         kfree(sdata->u.ap.next_beacon);
3088                         return err;
3089                 }
3090                 *changed |= err;
3091
3092                 break;
3093         case NL80211_IFTYPE_ADHOC:
3094                 if (!sdata->vif.bss_conf.ibss_joined)
3095                         return -EINVAL;
3096
3097                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3098                         return -EINVAL;
3099
3100                 switch (params->chandef.width) {
3101                 case NL80211_CHAN_WIDTH_40:
3102                         if (cfg80211_get_chandef_type(&params->chandef) !=
3103                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3104                                 return -EINVAL;
3105                 case NL80211_CHAN_WIDTH_5:
3106                 case NL80211_CHAN_WIDTH_10:
3107                 case NL80211_CHAN_WIDTH_20_NOHT:
3108                 case NL80211_CHAN_WIDTH_20:
3109                         break;
3110                 default:
3111                         return -EINVAL;
3112                 }
3113
3114                 /* changes into another band are not supported */
3115                 if (sdata->u.ibss.chandef.chan->band !=
3116                     params->chandef.chan->band)
3117                         return -EINVAL;
3118
3119                 /* see comments in the NL80211_IFTYPE_AP block */
3120                 if (params->count > 1) {
3121                         err = ieee80211_ibss_csa_beacon(sdata, params);
3122                         if (err < 0)
3123                                 return err;
3124                         *changed |= err;
3125                 }
3126
3127                 ieee80211_send_action_csa(sdata, params);
3128
3129                 break;
3130 #ifdef CONFIG_MAC80211_MESH
3131         case NL80211_IFTYPE_MESH_POINT: {
3132                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3133
3134                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3135                         return -EINVAL;
3136
3137                 /* changes into another band are not supported */
3138                 if (sdata->vif.bss_conf.chandef.chan->band !=
3139                     params->chandef.chan->band)
3140                         return -EINVAL;
3141
3142                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3143                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3144                         if (!ifmsh->pre_value)
3145                                 ifmsh->pre_value = 1;
3146                         else
3147                                 ifmsh->pre_value++;
3148                 }
3149
3150                 /* see comments in the NL80211_IFTYPE_AP block */
3151                 if (params->count > 1) {
3152                         err = ieee80211_mesh_csa_beacon(sdata, params);
3153                         if (err < 0) {
3154                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3155                                 return err;
3156                         }
3157                         *changed |= err;
3158                 }
3159
3160                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3161                         ieee80211_send_action_csa(sdata, params);
3162
3163                 break;
3164                 }
3165 #endif
3166         default:
3167                 return -EOPNOTSUPP;
3168         }
3169
3170         return 0;
3171 }
3172
3173 static int
3174 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3175                            struct cfg80211_csa_settings *params)
3176 {
3177         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3178         struct ieee80211_local *local = sdata->local;
3179         struct ieee80211_channel_switch ch_switch;
3180         struct ieee80211_chanctx_conf *conf;
3181         struct ieee80211_chanctx *chanctx;
3182         u32 changed = 0;
3183         int err;
3184
3185         sdata_assert_lock(sdata);
3186         lockdep_assert_held(&local->mtx);
3187
3188         if (!list_empty(&local->roc_list) || local->scanning)
3189                 return -EBUSY;
3190
3191         if (sdata->wdev.cac_started)
3192                 return -EBUSY;
3193
3194         if (cfg80211_chandef_identical(&params->chandef,
3195                                        &sdata->vif.bss_conf.chandef))
3196                 return -EINVAL;
3197
3198         /* don't allow another channel switch if one is already active. */
3199         if (sdata->vif.csa_active)
3200                 return -EBUSY;
3201
3202         mutex_lock(&local->chanctx_mtx);
3203         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3204                                          lockdep_is_held(&local->chanctx_mtx));
3205         if (!conf) {
3206                 err = -EBUSY;
3207                 goto out;
3208         }
3209
3210         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3211         if (!chanctx) {
3212                 err = -EBUSY;
3213                 goto out;
3214         }
3215
3216         ch_switch.timestamp = 0;
3217         ch_switch.device_timestamp = 0;
3218         ch_switch.block_tx = params->block_tx;
3219         ch_switch.chandef = params->chandef;
3220         ch_switch.count = params->count;
3221
3222         err = drv_pre_channel_switch(sdata, &ch_switch);
3223         if (err)
3224                 goto out;
3225
3226         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3227                                             chanctx->mode,
3228                                             params->radar_required);
3229         if (err)
3230                 goto out;
3231
3232         /* if reservation is invalid then this will fail */
3233         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3234         if (err) {
3235                 ieee80211_vif_unreserve_chanctx(sdata);
3236                 goto out;
3237         }
3238
3239         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3240         if (err) {
3241                 ieee80211_vif_unreserve_chanctx(sdata);
3242                 goto out;
3243         }
3244
3245         sdata->csa_chandef = params->chandef;
3246         sdata->csa_block_tx = params->block_tx;
3247         sdata->vif.csa_active = true;
3248
3249         if (sdata->csa_block_tx)
3250                 ieee80211_stop_vif_queues(local, sdata,
3251                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3252
3253         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3254                                           params->count);
3255
3256         if (changed) {
3257                 ieee80211_bss_info_change_notify(sdata, changed);
3258                 drv_channel_switch_beacon(sdata, &params->chandef);
3259         } else {
3260                 /* if the beacon didn't change, we can finalize immediately */
3261                 ieee80211_csa_finalize(sdata);
3262         }
3263
3264 out:
3265         mutex_unlock(&local->chanctx_mtx);
3266         return err;
3267 }
3268
3269 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3270                              struct cfg80211_csa_settings *params)
3271 {
3272         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3273         struct ieee80211_local *local = sdata->local;
3274         int err;
3275
3276         mutex_lock(&local->mtx);
3277         err = __ieee80211_channel_switch(wiphy, dev, params);
3278         mutex_unlock(&local->mtx);
3279
3280         return err;
3281 }
3282
3283 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3284                              struct cfg80211_mgmt_tx_params *params,
3285                              u64 *cookie)
3286 {
3287         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3288         struct ieee80211_local *local = sdata->local;
3289         struct sk_buff *skb;
3290         struct sta_info *sta;
3291         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3292         bool need_offchan = false;
3293         u32 flags;
3294         int ret;
3295         u8 *data;
3296
3297         if (params->dont_wait_for_ack)
3298                 flags = IEEE80211_TX_CTL_NO_ACK;
3299         else
3300                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3301                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3302
3303         if (params->no_cck)
3304                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3305
3306         switch (sdata->vif.type) {
3307         case NL80211_IFTYPE_ADHOC:
3308                 if (!sdata->vif.bss_conf.ibss_joined)
3309                         need_offchan = true;
3310                 /* fall through */
3311 #ifdef CONFIG_MAC80211_MESH
3312         case NL80211_IFTYPE_MESH_POINT:
3313                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3314                     !sdata->u.mesh.mesh_id_len)
3315                         need_offchan = true;
3316                 /* fall through */
3317 #endif
3318         case NL80211_IFTYPE_AP:
3319         case NL80211_IFTYPE_AP_VLAN:
3320         case NL80211_IFTYPE_P2P_GO:
3321                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3322                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3323                     !rcu_access_pointer(sdata->bss->beacon))
3324                         need_offchan = true;
3325                 if (!ieee80211_is_action(mgmt->frame_control) ||
3326                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3327                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3328                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3329                         break;
3330                 rcu_read_lock();
3331                 sta = sta_info_get(sdata, mgmt->da);
3332                 rcu_read_unlock();
3333                 if (!sta)
3334                         return -ENOLINK;
3335                 break;
3336         case NL80211_IFTYPE_STATION:
3337         case NL80211_IFTYPE_P2P_CLIENT:
3338                 if (!sdata->u.mgd.associated)
3339                         need_offchan = true;
3340                 break;
3341         case NL80211_IFTYPE_P2P_DEVICE:
3342                 need_offchan = true;
3343                 break;
3344         default:
3345                 return -EOPNOTSUPP;
3346         }
3347
3348         /* configurations requiring offchan cannot work if no channel has been
3349          * specified
3350          */
3351         if (need_offchan && !params->chan)
3352                 return -EINVAL;
3353
3354         mutex_lock(&local->mtx);
3355
3356         /* Check if the operating channel is the requested channel */
3357         if (!need_offchan) {
3358                 struct ieee80211_chanctx_conf *chanctx_conf;
3359
3360                 rcu_read_lock();
3361                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3362
3363                 if (chanctx_conf) {
3364                         need_offchan = params->chan &&
3365                                        (params->chan !=
3366                                         chanctx_conf->def.chan);
3367                 } else if (!params->chan) {
3368                         ret = -EINVAL;
3369                         rcu_read_unlock();
3370                         goto out_unlock;
3371                 } else {
3372                         need_offchan = true;
3373                 }
3374                 rcu_read_unlock();
3375         }
3376
3377         if (need_offchan && !params->offchan) {
3378                 ret = -EBUSY;
3379                 goto out_unlock;
3380         }
3381
3382         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3383         if (!skb) {
3384                 ret = -ENOMEM;
3385                 goto out_unlock;
3386         }
3387         skb_reserve(skb, local->hw.extra_tx_headroom);
3388
3389         data = skb_put(skb, params->len);
3390         memcpy(data, params->buf, params->len);
3391
3392         /* Update CSA counters */
3393         if (sdata->vif.csa_active &&
3394             (sdata->vif.type == NL80211_IFTYPE_AP ||
3395              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3396             params->n_csa_offsets) {
3397                 int i;
3398                 struct beacon_data *beacon = NULL;
3399
3400                 rcu_read_lock();
3401
3402                 if (sdata->vif.type == NL80211_IFTYPE_AP)
3403                         beacon = rcu_dereference(sdata->u.ap.beacon);
3404                 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3405                         beacon = rcu_dereference(sdata->u.ibss.presp);
3406                 else if (ieee80211_vif_is_mesh(&sdata->vif))
3407                         beacon = rcu_dereference(sdata->u.mesh.beacon);
3408
3409                 if (beacon)
3410                         for (i = 0; i < params->n_csa_offsets; i++)
3411                                 data[params->csa_offsets[i]] =
3412                                         beacon->csa_current_counter;
3413
3414                 rcu_read_unlock();
3415         }
3416
3417         IEEE80211_SKB_CB(skb)->flags = flags;
3418
3419         skb->dev = sdata->dev;
3420
3421         if (!need_offchan) {
3422                 *cookie = (unsigned long) skb;
3423                 ieee80211_tx_skb(sdata, skb);
3424                 ret = 0;
3425                 goto out_unlock;
3426         }
3427
3428         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3429                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3430         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3431                 IEEE80211_SKB_CB(skb)->hw_queue =
3432                         local->hw.offchannel_tx_hw_queue;
3433
3434         /* This will handle all kinds of coalescing and immediate TX */
3435         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3436                                        params->wait, cookie, skb,
3437                                        IEEE80211_ROC_TYPE_MGMT_TX);
3438         if (ret)
3439                 kfree_skb(skb);
3440  out_unlock:
3441         mutex_unlock(&local->mtx);
3442         return ret;
3443 }
3444
3445 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3446                                          struct wireless_dev *wdev,
3447                                          u64 cookie)
3448 {
3449         struct ieee80211_local *local = wiphy_priv(wiphy);
3450
3451         return ieee80211_cancel_roc(local, cookie, true);
3452 }
3453
3454 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3455                                           struct wireless_dev *wdev,
3456                                           u16 frame_type, bool reg)
3457 {
3458         struct ieee80211_local *local = wiphy_priv(wiphy);
3459
3460         switch (frame_type) {
3461         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3462                 if (reg)
3463                         local->probe_req_reg++;
3464                 else
3465                         local->probe_req_reg--;
3466
3467                 if (!local->open_count)
3468                         break;
3469
3470                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3471                 break;
3472         default:
3473                 break;
3474         }
3475 }
3476
3477 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3478 {
3479         struct ieee80211_local *local = wiphy_priv(wiphy);
3480
3481         if (local->started)
3482                 return -EOPNOTSUPP;
3483
3484         return drv_set_antenna(local, tx_ant, rx_ant);
3485 }
3486
3487 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3488 {
3489         struct ieee80211_local *local = wiphy_priv(wiphy);
3490
3491         return drv_get_antenna(local, tx_ant, rx_ant);
3492 }
3493
3494 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3495                                     struct net_device *dev,
3496                                     struct cfg80211_gtk_rekey_data *data)
3497 {
3498         struct ieee80211_local *local = wiphy_priv(wiphy);
3499         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3500
3501         if (!local->ops->set_rekey_data)
3502                 return -EOPNOTSUPP;
3503
3504         drv_set_rekey_data(local, sdata, data);
3505
3506         return 0;
3507 }
3508
3509 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3510                                   const u8 *peer, u64 *cookie)
3511 {
3512         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3513         struct ieee80211_local *local = sdata->local;
3514         struct ieee80211_qos_hdr *nullfunc;
3515         struct sk_buff *skb;
3516         int size = sizeof(*nullfunc);
3517         __le16 fc;
3518         bool qos;
3519         struct ieee80211_tx_info *info;
3520         struct sta_info *sta;
3521         struct ieee80211_chanctx_conf *chanctx_conf;
3522         enum ieee80211_band band;
3523
3524         rcu_read_lock();
3525         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3526         if (WARN_ON(!chanctx_conf)) {
3527                 rcu_read_unlock();
3528                 return -EINVAL;
3529         }
3530         band = chanctx_conf->def.chan->band;
3531         sta = sta_info_get_bss(sdata, peer);
3532         if (sta) {
3533                 qos = sta->sta.wme;
3534         } else {
3535                 rcu_read_unlock();
3536                 return -ENOLINK;
3537         }
3538
3539         if (qos) {
3540                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3541                                  IEEE80211_STYPE_QOS_NULLFUNC |
3542                                  IEEE80211_FCTL_FROMDS);
3543         } else {
3544                 size -= 2;
3545                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3546                                  IEEE80211_STYPE_NULLFUNC |
3547                                  IEEE80211_FCTL_FROMDS);
3548         }
3549
3550         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3551         if (!skb) {
3552                 rcu_read_unlock();
3553                 return -ENOMEM;
3554         }
3555
3556         skb->dev = dev;
3557
3558         skb_reserve(skb, local->hw.extra_tx_headroom);
3559
3560         nullfunc = (void *) skb_put(skb, size);
3561         nullfunc->frame_control = fc;
3562         nullfunc->duration_id = 0;
3563         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3564         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3565         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3566         nullfunc->seq_ctrl = 0;
3567
3568         info = IEEE80211_SKB_CB(skb);
3569
3570         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3571                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3572         info->band = band;
3573
3574         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3575         skb->priority = 7;
3576         if (qos)
3577                 nullfunc->qos_ctrl = cpu_to_le16(7);
3578
3579         local_bh_disable();
3580         ieee80211_xmit(sdata, sta, skb);
3581         local_bh_enable();
3582         rcu_read_unlock();
3583
3584         *cookie = (unsigned long) skb;
3585         return 0;
3586 }
3587
3588 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3589                                      struct wireless_dev *wdev,
3590                                      struct cfg80211_chan_def *chandef)
3591 {
3592         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3593         struct ieee80211_local *local = wiphy_priv(wiphy);
3594         struct ieee80211_chanctx_conf *chanctx_conf;
3595         int ret = -ENODATA;
3596
3597         rcu_read_lock();
3598         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3599         if (chanctx_conf) {
3600                 *chandef = sdata->vif.bss_conf.chandef;
3601                 ret = 0;
3602         } else if (local->open_count > 0 &&
3603                    local->open_count == local->monitors &&
3604                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3605                 if (local->use_chanctx)
3606                         *chandef = local->monitor_chandef;
3607                 else
3608                         *chandef = local->_oper_chandef;
3609                 ret = 0;
3610         }
3611         rcu_read_unlock();
3612
3613         return ret;
3614 }
3615
3616 #ifdef CONFIG_PM
3617 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3618 {
3619         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3620 }
3621 #endif
3622
3623 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3624                                  struct net_device *dev,
3625                                  struct cfg80211_qos_map *qos_map)
3626 {
3627         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3628         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3629
3630         if (qos_map) {
3631                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3632                 if (!new_qos_map)
3633                         return -ENOMEM;
3634                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3635         } else {
3636                 /* A NULL qos_map was passed to disable QoS mapping */
3637                 new_qos_map = NULL;
3638         }
3639
3640         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3641         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3642         if (old_qos_map)
3643                 kfree_rcu(old_qos_map, rcu_head);
3644
3645         return 0;
3646 }
3647
3648 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3649                                       struct net_device *dev,
3650                                       struct cfg80211_chan_def *chandef)
3651 {
3652         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3653         int ret;
3654         u32 changed = 0;
3655
3656         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3657         if (ret == 0)
3658                 ieee80211_bss_info_change_notify(sdata, changed);
3659
3660         return ret;
3661 }
3662
3663 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3664                                u8 tsid, const u8 *peer, u8 up,
3665                                u16 admitted_time)
3666 {
3667         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3668         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3669         int ac = ieee802_1d_to_ac[up];
3670
3671         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3672                 return -EOPNOTSUPP;
3673
3674         if (!(sdata->wmm_acm & BIT(up)))
3675                 return -EINVAL;
3676
3677         if (ifmgd->tx_tspec[ac].admitted_time)
3678                 return -EBUSY;
3679
3680         if (admitted_time) {
3681                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3682                 ifmgd->tx_tspec[ac].tsid = tsid;
3683                 ifmgd->tx_tspec[ac].up = up;
3684         }
3685
3686         return 0;
3687 }
3688
3689 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3690                                u8 tsid, const u8 *peer)
3691 {
3692         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3693         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3694         struct ieee80211_local *local = wiphy_priv(wiphy);
3695         int ac;
3696
3697         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3698                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3699
3700                 /* skip unused entries */
3701                 if (!tx_tspec->admitted_time)
3702                         continue;
3703
3704                 if (tx_tspec->tsid != tsid)
3705                         continue;
3706
3707                 /* due to this new packets will be reassigned to non-ACM ACs */
3708                 tx_tspec->up = -1;
3709
3710                 /* Make sure that all packets have been sent to avoid to
3711                  * restore the QoS params on packets that are still on the
3712                  * queues.
3713                  */
3714                 synchronize_net();
3715                 ieee80211_flush_queues(local, sdata, false);
3716
3717                 /* restore the normal QoS parameters
3718                  * (unconditionally to avoid races)
3719                  */
3720                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3721                 tx_tspec->downgraded = false;
3722                 ieee80211_sta_handle_tspec_ac_params(sdata);
3723
3724                 /* finally clear all the data */
3725                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3726
3727                 return 0;
3728         }
3729
3730         return -ENOENT;
3731 }
3732
3733 const struct cfg80211_ops mac80211_config_ops = {
3734         .add_virtual_intf = ieee80211_add_iface,
3735         .del_virtual_intf = ieee80211_del_iface,
3736         .change_virtual_intf = ieee80211_change_iface,
3737         .start_p2p_device = ieee80211_start_p2p_device,
3738         .stop_p2p_device = ieee80211_stop_p2p_device,
3739         .add_key = ieee80211_add_key,
3740         .del_key = ieee80211_del_key,
3741         .get_key = ieee80211_get_key,
3742         .set_default_key = ieee80211_config_default_key,
3743         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3744         .start_ap = ieee80211_start_ap,
3745         .change_beacon = ieee80211_change_beacon,
3746         .stop_ap = ieee80211_stop_ap,
3747         .add_station = ieee80211_add_station,
3748         .del_station = ieee80211_del_station,
3749         .change_station = ieee80211_change_station,
3750         .get_station = ieee80211_get_station,
3751         .dump_station = ieee80211_dump_station,
3752         .dump_survey = ieee80211_dump_survey,
3753 #ifdef CONFIG_MAC80211_MESH
3754         .add_mpath = ieee80211_add_mpath,
3755         .del_mpath = ieee80211_del_mpath,
3756         .change_mpath = ieee80211_change_mpath,
3757         .get_mpath = ieee80211_get_mpath,
3758         .dump_mpath = ieee80211_dump_mpath,
3759         .get_mpp = ieee80211_get_mpp,
3760         .dump_mpp = ieee80211_dump_mpp,
3761         .update_mesh_config = ieee80211_update_mesh_config,
3762         .get_mesh_config = ieee80211_get_mesh_config,
3763         .join_mesh = ieee80211_join_mesh,
3764         .leave_mesh = ieee80211_leave_mesh,
3765 #endif
3766         .join_ocb = ieee80211_join_ocb,
3767         .leave_ocb = ieee80211_leave_ocb,
3768         .change_bss = ieee80211_change_bss,
3769         .set_txq_params = ieee80211_set_txq_params,
3770         .set_monitor_channel = ieee80211_set_monitor_channel,
3771         .suspend = ieee80211_suspend,
3772         .resume = ieee80211_resume,
3773         .scan = ieee80211_scan,
3774         .sched_scan_start = ieee80211_sched_scan_start,
3775         .sched_scan_stop = ieee80211_sched_scan_stop,
3776         .auth = ieee80211_auth,
3777         .assoc = ieee80211_assoc,
3778         .deauth = ieee80211_deauth,
3779         .disassoc = ieee80211_disassoc,
3780         .join_ibss = ieee80211_join_ibss,
3781         .leave_ibss = ieee80211_leave_ibss,
3782         .set_mcast_rate = ieee80211_set_mcast_rate,
3783         .set_wiphy_params = ieee80211_set_wiphy_params,
3784         .set_tx_power = ieee80211_set_tx_power,
3785         .get_tx_power = ieee80211_get_tx_power,
3786         .set_wds_peer = ieee80211_set_wds_peer,
3787         .rfkill_poll = ieee80211_rfkill_poll,
3788         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3789         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3790         .set_power_mgmt = ieee80211_set_power_mgmt,
3791         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3792         .remain_on_channel = ieee80211_remain_on_channel,
3793         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3794         .mgmt_tx = ieee80211_mgmt_tx,
3795         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3796         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3797         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3798         .set_antenna = ieee80211_set_antenna,
3799         .get_antenna = ieee80211_get_antenna,
3800         .set_rekey_data = ieee80211_set_rekey_data,
3801         .tdls_oper = ieee80211_tdls_oper,
3802         .tdls_mgmt = ieee80211_tdls_mgmt,
3803         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3804         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3805         .probe_client = ieee80211_probe_client,
3806         .set_noack_map = ieee80211_set_noack_map,
3807 #ifdef CONFIG_PM
3808         .set_wakeup = ieee80211_set_wakeup,
3809 #endif
3810         .get_channel = ieee80211_cfg_get_channel,
3811         .start_radar_detection = ieee80211_start_radar_detection,
3812         .channel_switch = ieee80211_channel_switch,
3813         .set_qos_map = ieee80211_set_qos_map,
3814         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3815         .add_tx_ts = ieee80211_add_tx_ts,
3816         .del_tx_ts = ieee80211_del_tx_ts,
3817 };