kernel/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         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1063             local->hw.queues >= IEEE80211_NUM_ACS)
1064                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1065
1066         /* auth flags will be set later for TDLS stations */
1067         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1068                 ret = sta_apply_auth_flags(local, sta, mask, set);
1069                 if (ret)
1070                         return ret;
1071         }
1072
1073         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1074                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1075                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1076                 else
1077                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1078         }
1079
1080         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1081                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1082                 if (set & BIT(NL80211_STA_FLAG_MFP))
1083                         set_sta_flag(sta, WLAN_STA_MFP);
1084                 else
1085                         clear_sta_flag(sta, WLAN_STA_MFP);
1086         }
1087
1088         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1089                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1090                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1091                 else
1092                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1093         }
1094
1095         /* mark TDLS channel switch support, if the AP allows it */
1096         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1097             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1098             params->ext_capab_len >= 4 &&
1099             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1100                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1101
1102         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1103                 sta->sta.uapsd_queues = params->uapsd_queues;
1104                 sta->sta.max_sp = params->max_sp;
1105         }
1106
1107         /*
1108          * cfg80211 validates this (1-2007) and allows setting the AID
1109          * only when creating a new station entry
1110          */
1111         if (params->aid)
1112                 sta->sta.aid = params->aid;
1113
1114         /*
1115          * Some of the following updates would be racy if called on an
1116          * existing station, via ieee80211_change_station(). However,
1117          * all such changes are rejected by cfg80211 except for updates
1118          * changing the supported rates on an existing but not yet used
1119          * TDLS peer.
1120          */
1121
1122         if (params->listen_interval >= 0)
1123                 sta->listen_interval = params->listen_interval;
1124
1125         if (params->supported_rates) {
1126                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1127                                          sband, params->supported_rates,
1128                                          params->supported_rates_len,
1129                                          &sta->sta.supp_rates[band]);
1130         }
1131
1132         if (params->ht_capa)
1133                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1134                                                   params->ht_capa, sta);
1135
1136         if (params->vht_capa)
1137                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1138                                                     params->vht_capa, sta);
1139
1140         if (params->opmode_notif_used) {
1141                 /* returned value is only needed for rc update, but the
1142                  * rc isn't initialized here yet, so ignore it
1143                  */
1144                 __ieee80211_vht_handle_opmode(sdata, sta,
1145                                               params->opmode_notif,
1146                                               band, false);
1147         }
1148
1149         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1150 #ifdef CONFIG_MAC80211_MESH
1151                 u32 changed = 0;
1152
1153                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1154                         switch (params->plink_state) {
1155                         case NL80211_PLINK_ESTAB:
1156                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1157                                         changed = mesh_plink_inc_estab_count(
1158                                                         sdata);
1159                                 sta->plink_state = params->plink_state;
1160
1161                                 ieee80211_mps_sta_status_update(sta);
1162                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1163                                               sdata->u.mesh.mshcfg.power_mode);
1164                                 break;
1165                         case NL80211_PLINK_LISTEN:
1166                         case NL80211_PLINK_BLOCKED:
1167                         case NL80211_PLINK_OPN_SNT:
1168                         case NL80211_PLINK_OPN_RCVD:
1169                         case NL80211_PLINK_CNF_RCVD:
1170                         case NL80211_PLINK_HOLDING:
1171                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1172                                         changed = mesh_plink_dec_estab_count(
1173                                                         sdata);
1174                                 sta->plink_state = params->plink_state;
1175
1176                                 ieee80211_mps_sta_status_update(sta);
1177                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1178                                                 NL80211_MESH_POWER_UNKNOWN);
1179                                 break;
1180                         default:
1181                                 /*  nothing  */
1182                                 break;
1183                         }
1184                 }
1185
1186                 switch (params->plink_action) {
1187                 case NL80211_PLINK_ACTION_NO_ACTION:
1188                         /* nothing */
1189                         break;
1190                 case NL80211_PLINK_ACTION_OPEN:
1191                         changed |= mesh_plink_open(sta);
1192                         break;
1193                 case NL80211_PLINK_ACTION_BLOCK:
1194                         changed |= mesh_plink_block(sta);
1195                         break;
1196                 }
1197
1198                 if (params->local_pm)
1199                         changed |=
1200                               ieee80211_mps_set_sta_local_pm(sta,
1201                                                              params->local_pm);
1202                 ieee80211_mbss_info_change_notify(sdata, changed);
1203 #endif
1204         }
1205
1206         /* set the STA state after all sta info from usermode has been set */
1207         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1208                 ret = sta_apply_auth_flags(local, sta, mask, set);
1209                 if (ret)
1210                         return ret;
1211         }
1212
1213         return 0;
1214 }
1215
1216 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1217                                  const u8 *mac,
1218                                  struct station_parameters *params)
1219 {
1220         struct ieee80211_local *local = wiphy_priv(wiphy);
1221         struct sta_info *sta;
1222         struct ieee80211_sub_if_data *sdata;
1223         int err;
1224         int layer2_update;
1225
1226         if (params->vlan) {
1227                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1228
1229                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1230                     sdata->vif.type != NL80211_IFTYPE_AP)
1231                         return -EINVAL;
1232         } else
1233                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1234
1235         if (ether_addr_equal(mac, sdata->vif.addr))
1236                 return -EINVAL;
1237
1238         if (is_multicast_ether_addr(mac))
1239                 return -EINVAL;
1240
1241         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1242         if (!sta)
1243                 return -ENOMEM;
1244
1245         /*
1246          * defaults -- if userspace wants something else we'll
1247          * change it accordingly in sta_apply_parameters()
1248          */
1249         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1250                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1251                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1252         } else {
1253                 sta->sta.tdls = true;
1254         }
1255
1256         err = sta_apply_parameters(local, sta, params);
1257         if (err) {
1258                 sta_info_free(local, sta);
1259                 return err;
1260         }
1261
1262         /*
1263          * for TDLS, rate control should be initialized only when
1264          * rates are known and station is marked authorized
1265          */
1266         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1267                 rate_control_rate_init(sta);
1268
1269         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1270                 sdata->vif.type == NL80211_IFTYPE_AP;
1271
1272         err = sta_info_insert_rcu(sta);
1273         if (err) {
1274                 rcu_read_unlock();
1275                 return err;
1276         }
1277
1278         if (layer2_update)
1279                 ieee80211_send_layer2_update(sta);
1280
1281         rcu_read_unlock();
1282
1283         return 0;
1284 }
1285
1286 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1287                                  struct station_del_parameters *params)
1288 {
1289         struct ieee80211_sub_if_data *sdata;
1290
1291         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1292
1293         if (params->mac)
1294                 return sta_info_destroy_addr_bss(sdata, params->mac);
1295
1296         sta_info_flush(sdata);
1297         return 0;
1298 }
1299
1300 static int ieee80211_change_station(struct wiphy *wiphy,
1301                                     struct net_device *dev, const u8 *mac,
1302                                     struct station_parameters *params)
1303 {
1304         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1305         struct ieee80211_local *local = wiphy_priv(wiphy);
1306         struct sta_info *sta;
1307         struct ieee80211_sub_if_data *vlansdata;
1308         enum cfg80211_station_type statype;
1309         int err;
1310
1311         mutex_lock(&local->sta_mtx);
1312
1313         sta = sta_info_get_bss(sdata, mac);
1314         if (!sta) {
1315                 err = -ENOENT;
1316                 goto out_err;
1317         }
1318
1319         switch (sdata->vif.type) {
1320         case NL80211_IFTYPE_MESH_POINT:
1321                 if (sdata->u.mesh.user_mpm)
1322                         statype = CFG80211_STA_MESH_PEER_USER;
1323                 else
1324                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1325                 break;
1326         case NL80211_IFTYPE_ADHOC:
1327                 statype = CFG80211_STA_IBSS;
1328                 break;
1329         case NL80211_IFTYPE_STATION:
1330                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1331                         statype = CFG80211_STA_AP_STA;
1332                         break;
1333                 }
1334                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1335                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1336                 else
1337                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1338                 break;
1339         case NL80211_IFTYPE_AP:
1340         case NL80211_IFTYPE_AP_VLAN:
1341                 statype = CFG80211_STA_AP_CLIENT;
1342                 break;
1343         default:
1344                 err = -EOPNOTSUPP;
1345                 goto out_err;
1346         }
1347
1348         err = cfg80211_check_station_change(wiphy, params, statype);
1349         if (err)
1350                 goto out_err;
1351
1352         if (params->vlan && params->vlan != sta->sdata->dev) {
1353                 bool prev_4addr = false;
1354                 bool new_4addr = false;
1355
1356                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1357
1358                 if (params->vlan->ieee80211_ptr->use_4addr) {
1359                         if (vlansdata->u.vlan.sta) {
1360                                 err = -EBUSY;
1361                                 goto out_err;
1362                         }
1363
1364                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1365                         new_4addr = true;
1366                 }
1367
1368                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1369                     sta->sdata->u.vlan.sta) {
1370                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1371                         prev_4addr = true;
1372                 }
1373
1374                 sta->sdata = vlansdata;
1375
1376                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1377                     prev_4addr != new_4addr) {
1378                         if (new_4addr)
1379                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1380                         else
1381                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1382                 }
1383
1384                 ieee80211_send_layer2_update(sta);
1385         }
1386
1387         err = sta_apply_parameters(local, sta, params);
1388         if (err)
1389                 goto out_err;
1390
1391         mutex_unlock(&local->sta_mtx);
1392
1393         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1394              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1395             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1396             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1397             sta_info_tx_streams(sta) != 1) {
1398                 ht_dbg(sta->sdata,
1399                        "%pM just authorized and MIMO capable - update SMPS\n",
1400                        sta->sta.addr);
1401                 ieee80211_send_smps_action(sta->sdata,
1402                         sta->sdata->bss->req_smps,
1403                         sta->sta.addr,
1404                         sta->sdata->vif.bss_conf.bssid);
1405         }
1406
1407         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1408             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1409                 ieee80211_recalc_ps(local, -1);
1410                 ieee80211_recalc_ps_vif(sdata);
1411         }
1412
1413         return 0;
1414 out_err:
1415         mutex_unlock(&local->sta_mtx);
1416         return err;
1417 }
1418
1419 #ifdef CONFIG_MAC80211_MESH
1420 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1421                                const u8 *dst, const u8 *next_hop)
1422 {
1423         struct ieee80211_sub_if_data *sdata;
1424         struct mesh_path *mpath;
1425         struct sta_info *sta;
1426
1427         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1428
1429         rcu_read_lock();
1430         sta = sta_info_get(sdata, next_hop);
1431         if (!sta) {
1432                 rcu_read_unlock();
1433                 return -ENOENT;
1434         }
1435
1436         mpath = mesh_path_add(sdata, dst);
1437         if (IS_ERR(mpath)) {
1438                 rcu_read_unlock();
1439                 return PTR_ERR(mpath);
1440         }
1441
1442         mesh_path_fix_nexthop(mpath, sta);
1443
1444         rcu_read_unlock();
1445         return 0;
1446 }
1447
1448 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1449                                const u8 *dst)
1450 {
1451         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1452
1453         if (dst)
1454                 return mesh_path_del(sdata, dst);
1455
1456         mesh_path_flush_by_iface(sdata);
1457         return 0;
1458 }
1459
1460 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1461                                   const u8 *dst, const u8 *next_hop)
1462 {
1463         struct ieee80211_sub_if_data *sdata;
1464         struct mesh_path *mpath;
1465         struct sta_info *sta;
1466
1467         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1468
1469         rcu_read_lock();
1470
1471         sta = sta_info_get(sdata, next_hop);
1472         if (!sta) {
1473                 rcu_read_unlock();
1474                 return -ENOENT;
1475         }
1476
1477         mpath = mesh_path_lookup(sdata, dst);
1478         if (!mpath) {
1479                 rcu_read_unlock();
1480                 return -ENOENT;
1481         }
1482
1483         mesh_path_fix_nexthop(mpath, sta);
1484
1485         rcu_read_unlock();
1486         return 0;
1487 }
1488
1489 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1490                             struct mpath_info *pinfo)
1491 {
1492         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1493
1494         if (next_hop_sta)
1495                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1496         else
1497                 eth_zero_addr(next_hop);
1498
1499         memset(pinfo, 0, sizeof(*pinfo));
1500
1501         pinfo->generation = mesh_paths_generation;
1502
1503         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1504                         MPATH_INFO_SN |
1505                         MPATH_INFO_METRIC |
1506                         MPATH_INFO_EXPTIME |
1507                         MPATH_INFO_DISCOVERY_TIMEOUT |
1508                         MPATH_INFO_DISCOVERY_RETRIES |
1509                         MPATH_INFO_FLAGS;
1510
1511         pinfo->frame_qlen = mpath->frame_queue.qlen;
1512         pinfo->sn = mpath->sn;
1513         pinfo->metric = mpath->metric;
1514         if (time_before(jiffies, mpath->exp_time))
1515                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1516         pinfo->discovery_timeout =
1517                         jiffies_to_msecs(mpath->discovery_timeout);
1518         pinfo->discovery_retries = mpath->discovery_retries;
1519         if (mpath->flags & MESH_PATH_ACTIVE)
1520                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1521         if (mpath->flags & MESH_PATH_RESOLVING)
1522                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1523         if (mpath->flags & MESH_PATH_SN_VALID)
1524                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1525         if (mpath->flags & MESH_PATH_FIXED)
1526                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1527         if (mpath->flags & MESH_PATH_RESOLVED)
1528                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1529 }
1530
1531 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1532                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1533
1534 {
1535         struct ieee80211_sub_if_data *sdata;
1536         struct mesh_path *mpath;
1537
1538         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1539
1540         rcu_read_lock();
1541         mpath = mesh_path_lookup(sdata, dst);
1542         if (!mpath) {
1543                 rcu_read_unlock();
1544                 return -ENOENT;
1545         }
1546         memcpy(dst, mpath->dst, ETH_ALEN);
1547         mpath_set_pinfo(mpath, next_hop, pinfo);
1548         rcu_read_unlock();
1549         return 0;
1550 }
1551
1552 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1553                                 int idx, u8 *dst, u8 *next_hop,
1554                                 struct mpath_info *pinfo)
1555 {
1556         struct ieee80211_sub_if_data *sdata;
1557         struct mesh_path *mpath;
1558
1559         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1560
1561         rcu_read_lock();
1562         mpath = mesh_path_lookup_by_idx(sdata, idx);
1563         if (!mpath) {
1564                 rcu_read_unlock();
1565                 return -ENOENT;
1566         }
1567         memcpy(dst, mpath->dst, ETH_ALEN);
1568         mpath_set_pinfo(mpath, next_hop, pinfo);
1569         rcu_read_unlock();
1570         return 0;
1571 }
1572
1573 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1574                           struct mpath_info *pinfo)
1575 {
1576         memset(pinfo, 0, sizeof(*pinfo));
1577         memcpy(mpp, mpath->mpp, ETH_ALEN);
1578
1579         pinfo->generation = mpp_paths_generation;
1580 }
1581
1582 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1583                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1584
1585 {
1586         struct ieee80211_sub_if_data *sdata;
1587         struct mesh_path *mpath;
1588
1589         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1590
1591         rcu_read_lock();
1592         mpath = mpp_path_lookup(sdata, dst);
1593         if (!mpath) {
1594                 rcu_read_unlock();
1595                 return -ENOENT;
1596         }
1597         memcpy(dst, mpath->dst, ETH_ALEN);
1598         mpp_set_pinfo(mpath, mpp, pinfo);
1599         rcu_read_unlock();
1600         return 0;
1601 }
1602
1603 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1604                               int idx, u8 *dst, u8 *mpp,
1605                               struct mpath_info *pinfo)
1606 {
1607         struct ieee80211_sub_if_data *sdata;
1608         struct mesh_path *mpath;
1609
1610         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1611
1612         rcu_read_lock();
1613         mpath = mpp_path_lookup_by_idx(sdata, idx);
1614         if (!mpath) {
1615                 rcu_read_unlock();
1616                 return -ENOENT;
1617         }
1618         memcpy(dst, mpath->dst, ETH_ALEN);
1619         mpp_set_pinfo(mpath, mpp, pinfo);
1620         rcu_read_unlock();
1621         return 0;
1622 }
1623
1624 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1625                                 struct net_device *dev,
1626                                 struct mesh_config *conf)
1627 {
1628         struct ieee80211_sub_if_data *sdata;
1629         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1630
1631         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1632         return 0;
1633 }
1634
1635 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1636 {
1637         return (mask >> (parm-1)) & 0x1;
1638 }
1639
1640 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1641                 const struct mesh_setup *setup)
1642 {
1643         u8 *new_ie;
1644         const u8 *old_ie;
1645         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1646                                         struct ieee80211_sub_if_data, u.mesh);
1647
1648         /* allocate information elements */
1649         new_ie = NULL;
1650         old_ie = ifmsh->ie;
1651
1652         if (setup->ie_len) {
1653                 new_ie = kmemdup(setup->ie, setup->ie_len,
1654                                 GFP_KERNEL);
1655                 if (!new_ie)
1656                         return -ENOMEM;
1657         }
1658         ifmsh->ie_len = setup->ie_len;
1659         ifmsh->ie = new_ie;
1660         kfree(old_ie);
1661
1662         /* now copy the rest of the setup parameters */
1663         ifmsh->mesh_id_len = setup->mesh_id_len;
1664         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1665         ifmsh->mesh_sp_id = setup->sync_method;
1666         ifmsh->mesh_pp_id = setup->path_sel_proto;
1667         ifmsh->mesh_pm_id = setup->path_metric;
1668         ifmsh->user_mpm = setup->user_mpm;
1669         ifmsh->mesh_auth_id = setup->auth_id;
1670         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1671         if (setup->is_authenticated)
1672                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1673         if (setup->is_secure)
1674                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1675
1676         /* mcast rate setting in Mesh Node */
1677         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1678                                                 sizeof(setup->mcast_rate));
1679         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1680
1681         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1682         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1683
1684         return 0;
1685 }
1686
1687 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1688                                         struct net_device *dev, u32 mask,
1689                                         const struct mesh_config *nconf)
1690 {
1691         struct mesh_config *conf;
1692         struct ieee80211_sub_if_data *sdata;
1693         struct ieee80211_if_mesh *ifmsh;
1694
1695         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1696         ifmsh = &sdata->u.mesh;
1697
1698         /* Set the config options which we are interested in setting */
1699         conf = &(sdata->u.mesh.mshcfg);
1700         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1701                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1702         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1703                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1704         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1705                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1706         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1707                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1708         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1709                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1710         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1711                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1712         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1713                 conf->element_ttl = nconf->element_ttl;
1714         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1715                 if (ifmsh->user_mpm)
1716                         return -EBUSY;
1717                 conf->auto_open_plinks = nconf->auto_open_plinks;
1718         }
1719         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1720                 conf->dot11MeshNbrOffsetMaxNeighbor =
1721                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1722         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1723                 conf->dot11MeshHWMPmaxPREQretries =
1724                         nconf->dot11MeshHWMPmaxPREQretries;
1725         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1726                 conf->path_refresh_time = nconf->path_refresh_time;
1727         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1728                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1729         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1730                 conf->dot11MeshHWMPactivePathTimeout =
1731                         nconf->dot11MeshHWMPactivePathTimeout;
1732         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1733                 conf->dot11MeshHWMPpreqMinInterval =
1734                         nconf->dot11MeshHWMPpreqMinInterval;
1735         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1736                 conf->dot11MeshHWMPperrMinInterval =
1737                         nconf->dot11MeshHWMPperrMinInterval;
1738         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1739                            mask))
1740                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1741                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1742         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1743                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1744                 ieee80211_mesh_root_setup(ifmsh);
1745         }
1746         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1747                 /* our current gate announcement implementation rides on root
1748                  * announcements, so require this ifmsh to also be a root node
1749                  * */
1750                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1751                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1752                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1753                         ieee80211_mesh_root_setup(ifmsh);
1754                 }
1755                 conf->dot11MeshGateAnnouncementProtocol =
1756                         nconf->dot11MeshGateAnnouncementProtocol;
1757         }
1758         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1759                 conf->dot11MeshHWMPRannInterval =
1760                         nconf->dot11MeshHWMPRannInterval;
1761         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1762                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1763         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1764                 /* our RSSI threshold implementation is supported only for
1765                  * devices that report signal in dBm.
1766                  */
1767                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1768                         return -ENOTSUPP;
1769                 conf->rssi_threshold = nconf->rssi_threshold;
1770         }
1771         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1772                 conf->ht_opmode = nconf->ht_opmode;
1773                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1774                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1775         }
1776         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1777                 conf->dot11MeshHWMPactivePathToRootTimeout =
1778                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1779         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1780                 conf->dot11MeshHWMProotInterval =
1781                         nconf->dot11MeshHWMProotInterval;
1782         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1783                 conf->dot11MeshHWMPconfirmationInterval =
1784                         nconf->dot11MeshHWMPconfirmationInterval;
1785         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1786                 conf->power_mode = nconf->power_mode;
1787                 ieee80211_mps_local_status_update(sdata);
1788         }
1789         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1790                 conf->dot11MeshAwakeWindowDuration =
1791                         nconf->dot11MeshAwakeWindowDuration;
1792         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1793                 conf->plink_timeout = nconf->plink_timeout;
1794         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1795         return 0;
1796 }
1797
1798 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1799                                const struct mesh_config *conf,
1800                                const struct mesh_setup *setup)
1801 {
1802         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1803         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1804         int err;
1805
1806         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1807         err = copy_mesh_setup(ifmsh, setup);
1808         if (err)
1809                 return err;
1810
1811         /* can mesh use other SMPS modes? */
1812         sdata->smps_mode = IEEE80211_SMPS_OFF;
1813         sdata->needed_rx_chains = sdata->local->rx_chains;
1814
1815         mutex_lock(&sdata->local->mtx);
1816         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1817                                         IEEE80211_CHANCTX_SHARED);
1818         mutex_unlock(&sdata->local->mtx);
1819         if (err)
1820                 return err;
1821
1822         return ieee80211_start_mesh(sdata);
1823 }
1824
1825 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1826 {
1827         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1828
1829         ieee80211_stop_mesh(sdata);
1830         mutex_lock(&sdata->local->mtx);
1831         ieee80211_vif_release_channel(sdata);
1832         mutex_unlock(&sdata->local->mtx);
1833
1834         return 0;
1835 }
1836 #endif
1837
1838 static int ieee80211_change_bss(struct wiphy *wiphy,
1839                                 struct net_device *dev,
1840                                 struct bss_parameters *params)
1841 {
1842         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1843         enum ieee80211_band band;
1844         u32 changed = 0;
1845
1846         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1847                 return -ENOENT;
1848
1849         band = ieee80211_get_sdata_band(sdata);
1850
1851         if (params->use_cts_prot >= 0) {
1852                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1853                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1854         }
1855         if (params->use_short_preamble >= 0) {
1856                 sdata->vif.bss_conf.use_short_preamble =
1857                         params->use_short_preamble;
1858                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1859         }
1860
1861         if (!sdata->vif.bss_conf.use_short_slot &&
1862             band == IEEE80211_BAND_5GHZ) {
1863                 sdata->vif.bss_conf.use_short_slot = true;
1864                 changed |= BSS_CHANGED_ERP_SLOT;
1865         }
1866
1867         if (params->use_short_slot_time >= 0) {
1868                 sdata->vif.bss_conf.use_short_slot =
1869                         params->use_short_slot_time;
1870                 changed |= BSS_CHANGED_ERP_SLOT;
1871         }
1872
1873         if (params->basic_rates) {
1874                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1875                                          wiphy->bands[band],
1876                                          params->basic_rates,
1877                                          params->basic_rates_len,
1878                                          &sdata->vif.bss_conf.basic_rates);
1879                 changed |= BSS_CHANGED_BASIC_RATES;
1880         }
1881
1882         if (params->ap_isolate >= 0) {
1883                 if (params->ap_isolate)
1884                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1885                 else
1886                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1887         }
1888
1889         if (params->ht_opmode >= 0) {
1890                 sdata->vif.bss_conf.ht_operation_mode =
1891                         (u16) params->ht_opmode;
1892                 changed |= BSS_CHANGED_HT;
1893         }
1894
1895         if (params->p2p_ctwindow >= 0) {
1896                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1897                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1898                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1899                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1900                 changed |= BSS_CHANGED_P2P_PS;
1901         }
1902
1903         if (params->p2p_opp_ps > 0) {
1904                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1905                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1906                 changed |= BSS_CHANGED_P2P_PS;
1907         } else if (params->p2p_opp_ps == 0) {
1908                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1909                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1910                 changed |= BSS_CHANGED_P2P_PS;
1911         }
1912
1913         ieee80211_bss_info_change_notify(sdata, changed);
1914
1915         return 0;
1916 }
1917
1918 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1919                                     struct net_device *dev,
1920                                     struct ieee80211_txq_params *params)
1921 {
1922         struct ieee80211_local *local = wiphy_priv(wiphy);
1923         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1924         struct ieee80211_tx_queue_params p;
1925
1926         if (!local->ops->conf_tx)
1927                 return -EOPNOTSUPP;
1928
1929         if (local->hw.queues < IEEE80211_NUM_ACS)
1930                 return -EOPNOTSUPP;
1931
1932         memset(&p, 0, sizeof(p));
1933         p.aifs = params->aifs;
1934         p.cw_max = params->cwmax;
1935         p.cw_min = params->cwmin;
1936         p.txop = params->txop;
1937
1938         /*
1939          * Setting tx queue params disables u-apsd because it's only
1940          * called in master mode.
1941          */
1942         p.uapsd = false;
1943
1944         sdata->tx_conf[params->ac] = p;
1945         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1946                 wiphy_debug(local->hw.wiphy,
1947                             "failed to set TX queue parameters for AC %d\n",
1948                             params->ac);
1949                 return -EINVAL;
1950         }
1951
1952         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1953
1954         return 0;
1955 }
1956
1957 #ifdef CONFIG_PM
1958 static int ieee80211_suspend(struct wiphy *wiphy,
1959                              struct cfg80211_wowlan *wowlan)
1960 {
1961         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1962 }
1963
1964 static int ieee80211_resume(struct wiphy *wiphy)
1965 {
1966         return __ieee80211_resume(wiphy_priv(wiphy));
1967 }
1968 #else
1969 #define ieee80211_suspend NULL
1970 #define ieee80211_resume NULL
1971 #endif
1972
1973 static int ieee80211_scan(struct wiphy *wiphy,
1974                           struct cfg80211_scan_request *req)
1975 {
1976         struct ieee80211_sub_if_data *sdata;
1977
1978         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1979
1980         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1981         case NL80211_IFTYPE_STATION:
1982         case NL80211_IFTYPE_ADHOC:
1983         case NL80211_IFTYPE_MESH_POINT:
1984         case NL80211_IFTYPE_P2P_CLIENT:
1985         case NL80211_IFTYPE_P2P_DEVICE:
1986                 break;
1987         case NL80211_IFTYPE_P2P_GO:
1988                 if (sdata->local->ops->hw_scan)
1989                         break;
1990                 /*
1991                  * FIXME: implement NoA while scanning in software,
1992                  * for now fall through to allow scanning only when
1993                  * beaconing hasn't been configured yet
1994                  */
1995         case NL80211_IFTYPE_AP:
1996                 /*
1997                  * If the scan has been forced (and the driver supports
1998                  * forcing), don't care about being beaconing already.
1999                  * This will create problems to the attached stations (e.g. all
2000                  * the  frames sent while scanning on other channel will be
2001                  * lost)
2002                  */
2003                 if (sdata->u.ap.beacon &&
2004                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2005                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2006                         return -EOPNOTSUPP;
2007                 break;
2008         default:
2009                 return -EOPNOTSUPP;
2010         }
2011
2012         return ieee80211_request_scan(sdata, req);
2013 }
2014
2015 static int
2016 ieee80211_sched_scan_start(struct wiphy *wiphy,
2017                            struct net_device *dev,
2018                            struct cfg80211_sched_scan_request *req)
2019 {
2020         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2021
2022         if (!sdata->local->ops->sched_scan_start)
2023                 return -EOPNOTSUPP;
2024
2025         return ieee80211_request_sched_scan_start(sdata, req);
2026 }
2027
2028 static int
2029 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2030 {
2031         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2032
2033         if (!sdata->local->ops->sched_scan_stop)
2034                 return -EOPNOTSUPP;
2035
2036         return ieee80211_request_sched_scan_stop(sdata);
2037 }
2038
2039 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2040                           struct cfg80211_auth_request *req)
2041 {
2042         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2043 }
2044
2045 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2046                            struct cfg80211_assoc_request *req)
2047 {
2048         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2049 }
2050
2051 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2052                             struct cfg80211_deauth_request *req)
2053 {
2054         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2055 }
2056
2057 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2058                               struct cfg80211_disassoc_request *req)
2059 {
2060         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2061 }
2062
2063 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2064                                struct cfg80211_ibss_params *params)
2065 {
2066         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2067 }
2068
2069 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2070 {
2071         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2072 }
2073
2074 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2075                               struct ocb_setup *setup)
2076 {
2077         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2078 }
2079
2080 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2081 {
2082         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2083 }
2084
2085 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2086                                     int rate[IEEE80211_NUM_BANDS])
2087 {
2088         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2089
2090         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2091                sizeof(int) * IEEE80211_NUM_BANDS);
2092
2093         return 0;
2094 }
2095
2096 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2097 {
2098         struct ieee80211_local *local = wiphy_priv(wiphy);
2099         int err;
2100
2101         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2102                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2103
2104                 if (err)
2105                         return err;
2106         }
2107
2108         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2109             (changed & WIPHY_PARAM_DYN_ACK)) {
2110                 s16 coverage_class;
2111
2112                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2113                                         wiphy->coverage_class : -1;
2114                 err = drv_set_coverage_class(local, coverage_class);
2115
2116                 if (err)
2117                         return err;
2118         }
2119
2120         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2121                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2122
2123                 if (err)
2124                         return err;
2125         }
2126
2127         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2128                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2129                         return -EINVAL;
2130                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2131         }
2132         if (changed & WIPHY_PARAM_RETRY_LONG) {
2133                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2134                         return -EINVAL;
2135                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2136         }
2137         if (changed &
2138             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2139                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2140
2141         return 0;
2142 }
2143
2144 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2145                                   struct wireless_dev *wdev,
2146                                   enum nl80211_tx_power_setting type, int mbm)
2147 {
2148         struct ieee80211_local *local = wiphy_priv(wiphy);
2149         struct ieee80211_sub_if_data *sdata;
2150         enum nl80211_tx_power_setting txp_type = type;
2151         bool update_txp_type = false;
2152
2153         if (wdev) {
2154                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2155
2156                 switch (type) {
2157                 case NL80211_TX_POWER_AUTOMATIC:
2158                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2159                         txp_type = NL80211_TX_POWER_LIMITED;
2160                         break;
2161                 case NL80211_TX_POWER_LIMITED:
2162                 case NL80211_TX_POWER_FIXED:
2163                         if (mbm < 0 || (mbm % 100))
2164                                 return -EOPNOTSUPP;
2165                         sdata->user_power_level = MBM_TO_DBM(mbm);
2166                         break;
2167                 }
2168
2169                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2170                         update_txp_type = true;
2171                         sdata->vif.bss_conf.txpower_type = txp_type;
2172                 }
2173
2174                 ieee80211_recalc_txpower(sdata, update_txp_type);
2175
2176                 return 0;
2177         }
2178
2179         switch (type) {
2180         case NL80211_TX_POWER_AUTOMATIC:
2181                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2182                 txp_type = NL80211_TX_POWER_LIMITED;
2183                 break;
2184         case NL80211_TX_POWER_LIMITED:
2185         case NL80211_TX_POWER_FIXED:
2186                 if (mbm < 0 || (mbm % 100))
2187                         return -EOPNOTSUPP;
2188                 local->user_power_level = MBM_TO_DBM(mbm);
2189                 break;
2190         }
2191
2192         mutex_lock(&local->iflist_mtx);
2193         list_for_each_entry(sdata, &local->interfaces, list) {
2194                 sdata->user_power_level = local->user_power_level;
2195                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2196                         update_txp_type = true;
2197                 sdata->vif.bss_conf.txpower_type = txp_type;
2198         }
2199         list_for_each_entry(sdata, &local->interfaces, list)
2200                 ieee80211_recalc_txpower(sdata, update_txp_type);
2201         mutex_unlock(&local->iflist_mtx);
2202
2203         return 0;
2204 }
2205
2206 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2207                                   struct wireless_dev *wdev,
2208                                   int *dbm)
2209 {
2210         struct ieee80211_local *local = wiphy_priv(wiphy);
2211         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2212
2213         if (local->ops->get_txpower)
2214                 return drv_get_txpower(local, sdata, dbm);
2215
2216         if (!local->use_chanctx)
2217                 *dbm = local->hw.conf.power_level;
2218         else
2219                 *dbm = sdata->vif.bss_conf.txpower;
2220
2221         return 0;
2222 }
2223
2224 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2225                                   const u8 *addr)
2226 {
2227         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2228
2229         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2230
2231         return 0;
2232 }
2233
2234 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2235 {
2236         struct ieee80211_local *local = wiphy_priv(wiphy);
2237
2238         drv_rfkill_poll(local);
2239 }
2240
2241 #ifdef CONFIG_NL80211_TESTMODE
2242 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2243                                   struct wireless_dev *wdev,
2244                                   void *data, int len)
2245 {
2246         struct ieee80211_local *local = wiphy_priv(wiphy);
2247         struct ieee80211_vif *vif = NULL;
2248
2249         if (!local->ops->testmode_cmd)
2250                 return -EOPNOTSUPP;
2251
2252         if (wdev) {
2253                 struct ieee80211_sub_if_data *sdata;
2254
2255                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2256                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2257                         vif = &sdata->vif;
2258         }
2259
2260         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2261 }
2262
2263 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2264                                    struct sk_buff *skb,
2265                                    struct netlink_callback *cb,
2266                                    void *data, int len)
2267 {
2268         struct ieee80211_local *local = wiphy_priv(wiphy);
2269
2270         if (!local->ops->testmode_dump)
2271                 return -EOPNOTSUPP;
2272
2273         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2274 }
2275 #endif
2276
2277 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2278                                 enum ieee80211_smps_mode smps_mode)
2279 {
2280         struct sta_info *sta;
2281         enum ieee80211_smps_mode old_req;
2282
2283         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2284                 return -EINVAL;
2285
2286         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2287                 return 0;
2288
2289         old_req = sdata->u.ap.req_smps;
2290         sdata->u.ap.req_smps = smps_mode;
2291
2292         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2293         if (old_req == smps_mode ||
2294             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2295                 return 0;
2296
2297          /* If no associated stations, there's no need to do anything */
2298         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2299                 sdata->smps_mode = smps_mode;
2300                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2301                 return 0;
2302         }
2303
2304         ht_dbg(sdata,
2305                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2306                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2307
2308         mutex_lock(&sdata->local->sta_mtx);
2309         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2310                 /*
2311                  * Only stations associated to our AP and
2312                  * associated VLANs
2313                  */
2314                 if (sta->sdata->bss != &sdata->u.ap)
2315                         continue;
2316
2317                 /* This station doesn't support MIMO - skip it */
2318                 if (sta_info_tx_streams(sta) == 1)
2319                         continue;
2320
2321                 /*
2322                  * Don't wake up a STA just to send the action frame
2323                  * unless we are getting more restrictive.
2324                  */
2325                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2326                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2327                                                    smps_mode)) {
2328                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2329                                sta->sta.addr);
2330                         continue;
2331                 }
2332
2333                 /*
2334                  * If the STA is not authorized, wait until it gets
2335                  * authorized and the action frame will be sent then.
2336                  */
2337                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2338                         continue;
2339
2340                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2341                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2342                                            sdata->vif.bss_conf.bssid);
2343         }
2344         mutex_unlock(&sdata->local->sta_mtx);
2345
2346         sdata->smps_mode = smps_mode;
2347         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2348
2349         return 0;
2350 }
2351
2352 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2353                                  enum ieee80211_smps_mode smps_mode)
2354 {
2355         const u8 *ap;
2356         enum ieee80211_smps_mode old_req;
2357         int err;
2358
2359         lockdep_assert_held(&sdata->wdev.mtx);
2360
2361         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2362                 return -EINVAL;
2363
2364         old_req = sdata->u.mgd.req_smps;
2365         sdata->u.mgd.req_smps = smps_mode;
2366
2367         if (old_req == smps_mode &&
2368             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2369                 return 0;
2370
2371         /*
2372          * If not associated, or current association is not an HT
2373          * association, there's no need to do anything, just store
2374          * the new value until we associate.
2375          */
2376         if (!sdata->u.mgd.associated ||
2377             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2378                 return 0;
2379
2380         ap = sdata->u.mgd.associated->bssid;
2381
2382         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2383                 if (sdata->u.mgd.powersave)
2384                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2385                 else
2386                         smps_mode = IEEE80211_SMPS_OFF;
2387         }
2388
2389         /* send SM PS frame to AP */
2390         err = ieee80211_send_smps_action(sdata, smps_mode,
2391                                          ap, ap);
2392         if (err)
2393                 sdata->u.mgd.req_smps = old_req;
2394
2395         return err;
2396 }
2397
2398 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2399                                     bool enabled, int timeout)
2400 {
2401         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2402         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2403
2404         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2405                 return -EOPNOTSUPP;
2406
2407         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2408                 return -EOPNOTSUPP;
2409
2410         if (enabled == sdata->u.mgd.powersave &&
2411             timeout == local->dynamic_ps_forced_timeout)
2412                 return 0;
2413
2414         sdata->u.mgd.powersave = enabled;
2415         local->dynamic_ps_forced_timeout = timeout;
2416
2417         /* no change, but if automatic follow powersave */
2418         sdata_lock(sdata);
2419         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2420         sdata_unlock(sdata);
2421
2422         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2423                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2424
2425         ieee80211_recalc_ps(local, -1);
2426         ieee80211_recalc_ps_vif(sdata);
2427
2428         return 0;
2429 }
2430
2431 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2432                                          struct net_device *dev,
2433                                          s32 rssi_thold, u32 rssi_hyst)
2434 {
2435         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2436         struct ieee80211_vif *vif = &sdata->vif;
2437         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2438
2439         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2440             rssi_hyst == bss_conf->cqm_rssi_hyst)
2441                 return 0;
2442
2443         bss_conf->cqm_rssi_thold = rssi_thold;
2444         bss_conf->cqm_rssi_hyst = rssi_hyst;
2445
2446         /* tell the driver upon association, unless already associated */
2447         if (sdata->u.mgd.associated &&
2448             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2449                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2450
2451         return 0;
2452 }
2453
2454 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2455                                       struct net_device *dev,
2456                                       const u8 *addr,
2457                                       const struct cfg80211_bitrate_mask *mask)
2458 {
2459         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2460         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2461         int i, ret;
2462
2463         if (!ieee80211_sdata_running(sdata))
2464                 return -ENETDOWN;
2465
2466         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2467                 ret = drv_set_bitrate_mask(local, sdata, mask);
2468                 if (ret)
2469                         return ret;
2470         }
2471
2472         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2473                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2474                 int j;
2475
2476                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2477                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2478                        sizeof(mask->control[i].ht_mcs));
2479
2480                 sdata->rc_has_mcs_mask[i] = false;
2481                 if (!sband)
2482                         continue;
2483
2484                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2485                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2486                                 sdata->rc_has_mcs_mask[i] = true;
2487                                 break;
2488                         }
2489         }
2490
2491         return 0;
2492 }
2493
2494 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2495                                            struct ieee80211_roc_work *new_roc,
2496                                            struct ieee80211_roc_work *cur_roc)
2497 {
2498         unsigned long now = jiffies;
2499         unsigned long remaining = cur_roc->hw_start_time +
2500                                   msecs_to_jiffies(cur_roc->duration) -
2501                                   now;
2502
2503         if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2504                 return false;
2505
2506         /* if it doesn't fit entirely, schedule a new one */
2507         if (new_roc->duration > jiffies_to_msecs(remaining))
2508                 return false;
2509
2510         ieee80211_handle_roc_started(new_roc);
2511
2512         /* add to dependents so we send the expired event properly */
2513         list_add_tail(&new_roc->list, &cur_roc->dependents);
2514         return true;
2515 }
2516
2517 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2518                                     struct ieee80211_sub_if_data *sdata,
2519                                     struct ieee80211_channel *channel,
2520                                     unsigned int duration, u64 *cookie,
2521                                     struct sk_buff *txskb,
2522                                     enum ieee80211_roc_type type)
2523 {
2524         struct ieee80211_roc_work *roc, *tmp;
2525         bool queued = false;
2526         int ret;
2527
2528         lockdep_assert_held(&local->mtx);
2529
2530         if (local->use_chanctx && !local->ops->remain_on_channel)
2531                 return -EOPNOTSUPP;
2532
2533         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2534         if (!roc)
2535                 return -ENOMEM;
2536
2537         /*
2538          * If the duration is zero, then the driver
2539          * wouldn't actually do anything. Set it to
2540          * 10 for now.
2541          *
2542          * TODO: cancel the off-channel operation
2543          *       when we get the SKB's TX status and
2544          *       the wait time was zero before.
2545          */
2546         if (!duration)
2547                 duration = 10;
2548
2549         roc->chan = channel;
2550         roc->duration = duration;
2551         roc->req_duration = duration;
2552         roc->frame = txskb;
2553         roc->type = type;
2554         roc->mgmt_tx_cookie = (unsigned long)txskb;
2555         roc->sdata = sdata;
2556         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2557         INIT_LIST_HEAD(&roc->dependents);
2558
2559         /*
2560          * cookie is either the roc cookie (for normal roc)
2561          * or the SKB (for mgmt TX)
2562          */
2563         if (!txskb) {
2564                 /* local->mtx protects this */
2565                 local->roc_cookie_counter++;
2566                 roc->cookie = local->roc_cookie_counter;
2567                 /* wow, you wrapped 64 bits ... more likely a bug */
2568                 if (WARN_ON(roc->cookie == 0)) {
2569                         roc->cookie = 1;
2570                         local->roc_cookie_counter++;
2571                 }
2572                 *cookie = roc->cookie;
2573         } else {
2574                 *cookie = (unsigned long)txskb;
2575         }
2576
2577         /* if there's one pending or we're scanning, queue this one */
2578         if (!list_empty(&local->roc_list) ||
2579             local->scanning || ieee80211_is_radar_required(local))
2580                 goto out_check_combine;
2581
2582         /* if not HW assist, just queue & schedule work */
2583         if (!local->ops->remain_on_channel) {
2584                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2585                 goto out_queue;
2586         }
2587
2588         /* otherwise actually kick it off here (for error handling) */
2589
2590         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2591         if (ret) {
2592                 kfree(roc);
2593                 return ret;
2594         }
2595
2596         roc->started = true;
2597         goto out_queue;
2598
2599  out_check_combine:
2600         list_for_each_entry(tmp, &local->roc_list, list) {
2601                 if (tmp->chan != channel || tmp->sdata != sdata)
2602                         continue;
2603
2604                 /*
2605                  * Extend this ROC if possible:
2606                  *
2607                  * If it hasn't started yet, just increase the duration
2608                  * and add the new one to the list of dependents.
2609                  * If the type of the new ROC has higher priority, modify the
2610                  * type of the previous one to match that of the new one.
2611                  */
2612                 if (!tmp->started) {
2613                         list_add_tail(&roc->list, &tmp->dependents);
2614                         tmp->duration = max(tmp->duration, roc->duration);
2615                         tmp->type = max(tmp->type, roc->type);
2616                         queued = true;
2617                         break;
2618                 }
2619
2620                 /* If it has already started, it's more difficult ... */
2621                 if (local->ops->remain_on_channel) {
2622                         /*
2623                          * In the offloaded ROC case, if it hasn't begun, add
2624                          * this new one to the dependent list to be handled
2625                          * when the master one begins. If it has begun,
2626                          * check if it fits entirely within the existing one,
2627                          * in which case it will just be dependent as well.
2628                          * Otherwise, schedule it by itself.
2629                          */
2630                         if (!tmp->hw_begun) {
2631                                 list_add_tail(&roc->list, &tmp->dependents);
2632                                 queued = true;
2633                                 break;
2634                         }
2635
2636                         if (ieee80211_coalesce_started_roc(local, roc, tmp))
2637                                 queued = true;
2638                 } else if (del_timer_sync(&tmp->work.timer)) {
2639                         unsigned long new_end;
2640
2641                         /*
2642                          * In the software ROC case, cancel the timer, if
2643                          * that fails then the finish work is already
2644                          * queued/pending and thus we queue the new ROC
2645                          * normally, if that succeeds then we can extend
2646                          * the timer duration and TX the frame (if any.)
2647                          */
2648
2649                         list_add_tail(&roc->list, &tmp->dependents);
2650                         queued = true;
2651
2652                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2653
2654                         /* ok, it was started & we canceled timer */
2655                         if (time_after(new_end, tmp->work.timer.expires))
2656                                 mod_timer(&tmp->work.timer, new_end);
2657                         else
2658                                 add_timer(&tmp->work.timer);
2659
2660                         ieee80211_handle_roc_started(roc);
2661                 }
2662                 break;
2663         }
2664
2665  out_queue:
2666         if (!queued)
2667                 list_add_tail(&roc->list, &local->roc_list);
2668
2669         return 0;
2670 }
2671
2672 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2673                                        struct wireless_dev *wdev,
2674                                        struct ieee80211_channel *chan,
2675                                        unsigned int duration,
2676                                        u64 *cookie)
2677 {
2678         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2679         struct ieee80211_local *local = sdata->local;
2680         int ret;
2681
2682         mutex_lock(&local->mtx);
2683         ret = ieee80211_start_roc_work(local, sdata, chan,
2684                                        duration, cookie, NULL,
2685                                        IEEE80211_ROC_TYPE_NORMAL);
2686         mutex_unlock(&local->mtx);
2687
2688         return ret;
2689 }
2690
2691 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2692                                 u64 cookie, bool mgmt_tx)
2693 {
2694         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2695         int ret;
2696
2697         mutex_lock(&local->mtx);
2698         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2699                 struct ieee80211_roc_work *dep, *tmp2;
2700
2701                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2702                         if (!mgmt_tx && dep->cookie != cookie)
2703                                 continue;
2704                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2705                                 continue;
2706                         /* found dependent item -- just remove it */
2707                         list_del(&dep->list);
2708                         mutex_unlock(&local->mtx);
2709
2710                         ieee80211_roc_notify_destroy(dep, true);
2711                         return 0;
2712                 }
2713
2714                 if (!mgmt_tx && roc->cookie != cookie)
2715                         continue;
2716                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2717                         continue;
2718
2719                 found = roc;
2720                 break;
2721         }
2722
2723         if (!found) {
2724                 mutex_unlock(&local->mtx);
2725                 return -ENOENT;
2726         }
2727
2728         /*
2729          * We found the item to cancel, so do that. Note that it
2730          * may have dependents, which we also cancel (and send
2731          * the expired signal for.) Not doing so would be quite
2732          * tricky here, but we may need to fix it later.
2733          */
2734
2735         if (local->ops->remain_on_channel) {
2736                 if (found->started) {
2737                         ret = drv_cancel_remain_on_channel(local);
2738                         if (WARN_ON_ONCE(ret)) {
2739                                 mutex_unlock(&local->mtx);
2740                                 return ret;
2741                         }
2742                 }
2743
2744                 list_del(&found->list);
2745
2746                 if (found->started)
2747                         ieee80211_start_next_roc(local);
2748                 mutex_unlock(&local->mtx);
2749
2750                 ieee80211_roc_notify_destroy(found, true);
2751         } else {
2752                 /* work may be pending so use it all the time */
2753                 found->abort = true;
2754                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2755
2756                 mutex_unlock(&local->mtx);
2757
2758                 /* work will clean up etc */
2759                 flush_delayed_work(&found->work);
2760                 WARN_ON(!found->to_be_freed);
2761                 kfree(found);
2762         }
2763
2764         return 0;
2765 }
2766
2767 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2768                                               struct wireless_dev *wdev,
2769                                               u64 cookie)
2770 {
2771         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2772         struct ieee80211_local *local = sdata->local;
2773
2774         return ieee80211_cancel_roc(local, cookie, false);
2775 }
2776
2777 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2778                                            struct net_device *dev,
2779                                            struct cfg80211_chan_def *chandef,
2780                                            u32 cac_time_ms)
2781 {
2782         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2783         struct ieee80211_local *local = sdata->local;
2784         int err;
2785
2786         mutex_lock(&local->mtx);
2787         if (!list_empty(&local->roc_list) || local->scanning) {
2788                 err = -EBUSY;
2789                 goto out_unlock;
2790         }
2791
2792         /* whatever, but channel contexts should not complain about that one */
2793         sdata->smps_mode = IEEE80211_SMPS_OFF;
2794         sdata->needed_rx_chains = local->rx_chains;
2795
2796         err = ieee80211_vif_use_channel(sdata, chandef,
2797                                         IEEE80211_CHANCTX_SHARED);
2798         if (err)
2799                 goto out_unlock;
2800
2801         ieee80211_queue_delayed_work(&sdata->local->hw,
2802                                      &sdata->dfs_cac_timer_work,
2803                                      msecs_to_jiffies(cac_time_ms));
2804
2805  out_unlock:
2806         mutex_unlock(&local->mtx);
2807         return err;
2808 }
2809
2810 static struct cfg80211_beacon_data *
2811 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2812 {
2813         struct cfg80211_beacon_data *new_beacon;
2814         u8 *pos;
2815         int len;
2816
2817         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2818               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2819               beacon->probe_resp_len;
2820
2821         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2822         if (!new_beacon)
2823                 return NULL;
2824
2825         pos = (u8 *)(new_beacon + 1);
2826         if (beacon->head_len) {
2827                 new_beacon->head_len = beacon->head_len;
2828                 new_beacon->head = pos;
2829                 memcpy(pos, beacon->head, beacon->head_len);
2830                 pos += beacon->head_len;
2831         }
2832         if (beacon->tail_len) {
2833                 new_beacon->tail_len = beacon->tail_len;
2834                 new_beacon->tail = pos;
2835                 memcpy(pos, beacon->tail, beacon->tail_len);
2836                 pos += beacon->tail_len;
2837         }
2838         if (beacon->beacon_ies_len) {
2839                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2840                 new_beacon->beacon_ies = pos;
2841                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2842                 pos += beacon->beacon_ies_len;
2843         }
2844         if (beacon->proberesp_ies_len) {
2845                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2846                 new_beacon->proberesp_ies = pos;
2847                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2848                 pos += beacon->proberesp_ies_len;
2849         }
2850         if (beacon->assocresp_ies_len) {
2851                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2852                 new_beacon->assocresp_ies = pos;
2853                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2854                 pos += beacon->assocresp_ies_len;
2855         }
2856         if (beacon->probe_resp_len) {
2857                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2858                 beacon->probe_resp = pos;
2859                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2860                 pos += beacon->probe_resp_len;
2861         }
2862
2863         return new_beacon;
2864 }
2865
2866 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2867 {
2868         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2869
2870         ieee80211_queue_work(&sdata->local->hw,
2871                              &sdata->csa_finalize_work);
2872 }
2873 EXPORT_SYMBOL(ieee80211_csa_finish);
2874
2875 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2876                                           u32 *changed)
2877 {
2878         int err;
2879
2880         switch (sdata->vif.type) {
2881         case NL80211_IFTYPE_AP:
2882                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2883                                               NULL);
2884                 kfree(sdata->u.ap.next_beacon);
2885                 sdata->u.ap.next_beacon = NULL;
2886
2887                 if (err < 0)
2888                         return err;
2889                 *changed |= err;
2890                 break;
2891         case NL80211_IFTYPE_ADHOC:
2892                 err = ieee80211_ibss_finish_csa(sdata);
2893                 if (err < 0)
2894                         return err;
2895                 *changed |= err;
2896                 break;
2897 #ifdef CONFIG_MAC80211_MESH
2898         case NL80211_IFTYPE_MESH_POINT:
2899                 err = ieee80211_mesh_finish_csa(sdata);
2900                 if (err < 0)
2901                         return err;
2902                 *changed |= err;
2903                 break;
2904 #endif
2905         default:
2906                 WARN_ON(1);
2907                 return -EINVAL;
2908         }
2909
2910         return 0;
2911 }
2912
2913 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2914 {
2915         struct ieee80211_local *local = sdata->local;
2916         u32 changed = 0;
2917         int err;
2918
2919         sdata_assert_lock(sdata);
2920         lockdep_assert_held(&local->mtx);
2921         lockdep_assert_held(&local->chanctx_mtx);
2922
2923         /*
2924          * using reservation isn't immediate as it may be deferred until later
2925          * with multi-vif. once reservation is complete it will re-schedule the
2926          * work with no reserved_chanctx so verify chandef to check if it
2927          * completed successfully
2928          */
2929
2930         if (sdata->reserved_chanctx) {
2931                 /*
2932                  * with multi-vif csa driver may call ieee80211_csa_finish()
2933                  * many times while waiting for other interfaces to use their
2934                  * reservations
2935                  */
2936                 if (sdata->reserved_ready)
2937                         return 0;
2938
2939                 return ieee80211_vif_use_reserved_context(sdata);
2940         }
2941
2942         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2943                                         &sdata->csa_chandef))
2944                 return -EINVAL;
2945
2946         sdata->vif.csa_active = false;
2947
2948         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2949         if (err)
2950                 return err;
2951
2952         ieee80211_bss_info_change_notify(sdata, changed);
2953
2954         if (sdata->csa_block_tx) {
2955                 ieee80211_wake_vif_queues(local, sdata,
2956                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2957                 sdata->csa_block_tx = false;
2958         }
2959
2960         err = drv_post_channel_switch(sdata);
2961         if (err)
2962                 return err;
2963
2964         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2965
2966         return 0;
2967 }
2968
2969 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2970 {
2971         if (__ieee80211_csa_finalize(sdata)) {
2972                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2973                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2974                                     GFP_KERNEL);
2975         }
2976 }
2977
2978 void ieee80211_csa_finalize_work(struct work_struct *work)
2979 {
2980         struct ieee80211_sub_if_data *sdata =
2981                 container_of(work, struct ieee80211_sub_if_data,
2982                              csa_finalize_work);
2983         struct ieee80211_local *local = sdata->local;
2984
2985         sdata_lock(sdata);
2986         mutex_lock(&local->mtx);
2987         mutex_lock(&local->chanctx_mtx);
2988
2989         /* AP might have been stopped while waiting for the lock. */
2990         if (!sdata->vif.csa_active)
2991                 goto unlock;
2992
2993         if (!ieee80211_sdata_running(sdata))
2994                 goto unlock;
2995
2996         ieee80211_csa_finalize(sdata);
2997
2998 unlock:
2999         mutex_unlock(&local->chanctx_mtx);
3000         mutex_unlock(&local->mtx);
3001         sdata_unlock(sdata);
3002 }
3003
3004 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3005                                     struct cfg80211_csa_settings *params,
3006                                     u32 *changed)
3007 {
3008         struct ieee80211_csa_settings csa = {};
3009         int err;
3010
3011         switch (sdata->vif.type) {
3012         case NL80211_IFTYPE_AP:
3013                 sdata->u.ap.next_beacon =
3014                         cfg80211_beacon_dup(&params->beacon_after);
3015                 if (!sdata->u.ap.next_beacon)
3016                         return -ENOMEM;
3017
3018                 /*
3019                  * With a count of 0, we don't have to wait for any
3020                  * TBTT before switching, so complete the CSA
3021                  * immediately.  In theory, with a count == 1 we
3022                  * should delay the switch until just before the next
3023                  * TBTT, but that would complicate things so we switch
3024                  * immediately too.  If we would delay the switch
3025                  * until the next TBTT, we would have to set the probe
3026                  * response here.
3027                  *
3028                  * TODO: A channel switch with count <= 1 without
3029                  * sending a CSA action frame is kind of useless,
3030                  * because the clients won't know we're changing
3031                  * channels.  The action frame must be implemented
3032                  * either here or in the userspace.
3033                  */
3034                 if (params->count <= 1)
3035                         break;
3036
3037                 if ((params->n_counter_offsets_beacon >
3038                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3039                     (params->n_counter_offsets_presp >
3040                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3041                         return -EINVAL;
3042
3043                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3044                 csa.counter_offsets_presp = params->counter_offsets_presp;
3045                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3046                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3047                 csa.count = params->count;
3048
3049                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3050                 if (err < 0) {
3051                         kfree(sdata->u.ap.next_beacon);
3052                         return err;
3053                 }
3054                 *changed |= err;
3055
3056                 break;
3057         case NL80211_IFTYPE_ADHOC:
3058                 if (!sdata->vif.bss_conf.ibss_joined)
3059                         return -EINVAL;
3060
3061                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3062                         return -EINVAL;
3063
3064                 switch (params->chandef.width) {
3065                 case NL80211_CHAN_WIDTH_40:
3066                         if (cfg80211_get_chandef_type(&params->chandef) !=
3067                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3068                                 return -EINVAL;
3069                 case NL80211_CHAN_WIDTH_5:
3070                 case NL80211_CHAN_WIDTH_10:
3071                 case NL80211_CHAN_WIDTH_20_NOHT:
3072                 case NL80211_CHAN_WIDTH_20:
3073                         break;
3074                 default:
3075                         return -EINVAL;
3076                 }
3077
3078                 /* changes into another band are not supported */
3079                 if (sdata->u.ibss.chandef.chan->band !=
3080                     params->chandef.chan->band)
3081                         return -EINVAL;
3082
3083                 /* see comments in the NL80211_IFTYPE_AP block */
3084                 if (params->count > 1) {
3085                         err = ieee80211_ibss_csa_beacon(sdata, params);
3086                         if (err < 0)
3087                                 return err;
3088                         *changed |= err;
3089                 }
3090
3091                 ieee80211_send_action_csa(sdata, params);
3092
3093                 break;
3094 #ifdef CONFIG_MAC80211_MESH
3095         case NL80211_IFTYPE_MESH_POINT: {
3096                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3097
3098                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3099                         return -EINVAL;
3100
3101                 /* changes into another band are not supported */
3102                 if (sdata->vif.bss_conf.chandef.chan->band !=
3103                     params->chandef.chan->band)
3104                         return -EINVAL;
3105
3106                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3107                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3108                         if (!ifmsh->pre_value)
3109                                 ifmsh->pre_value = 1;
3110                         else
3111                                 ifmsh->pre_value++;
3112                 }
3113
3114                 /* see comments in the NL80211_IFTYPE_AP block */
3115                 if (params->count > 1) {
3116                         err = ieee80211_mesh_csa_beacon(sdata, params);
3117                         if (err < 0) {
3118                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3119                                 return err;
3120                         }
3121                         *changed |= err;
3122                 }
3123
3124                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3125                         ieee80211_send_action_csa(sdata, params);
3126
3127                 break;
3128                 }
3129 #endif
3130         default:
3131                 return -EOPNOTSUPP;
3132         }
3133
3134         return 0;
3135 }
3136
3137 static int
3138 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3139                            struct cfg80211_csa_settings *params)
3140 {
3141         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3142         struct ieee80211_local *local = sdata->local;
3143         struct ieee80211_channel_switch ch_switch;
3144         struct ieee80211_chanctx_conf *conf;
3145         struct ieee80211_chanctx *chanctx;
3146         u32 changed = 0;
3147         int err;
3148
3149         sdata_assert_lock(sdata);
3150         lockdep_assert_held(&local->mtx);
3151
3152         if (!list_empty(&local->roc_list) || local->scanning)
3153                 return -EBUSY;
3154
3155         if (sdata->wdev.cac_started)
3156                 return -EBUSY;
3157
3158         if (cfg80211_chandef_identical(&params->chandef,
3159                                        &sdata->vif.bss_conf.chandef))
3160                 return -EINVAL;
3161
3162         /* don't allow another channel switch if one is already active. */
3163         if (sdata->vif.csa_active)
3164                 return -EBUSY;
3165
3166         mutex_lock(&local->chanctx_mtx);
3167         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3168                                          lockdep_is_held(&local->chanctx_mtx));
3169         if (!conf) {
3170                 err = -EBUSY;
3171                 goto out;
3172         }
3173
3174         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3175         if (!chanctx) {
3176                 err = -EBUSY;
3177                 goto out;
3178         }
3179
3180         ch_switch.timestamp = 0;
3181         ch_switch.device_timestamp = 0;
3182         ch_switch.block_tx = params->block_tx;
3183         ch_switch.chandef = params->chandef;
3184         ch_switch.count = params->count;
3185
3186         err = drv_pre_channel_switch(sdata, &ch_switch);
3187         if (err)
3188                 goto out;
3189
3190         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3191                                             chanctx->mode,
3192                                             params->radar_required);
3193         if (err)
3194                 goto out;
3195
3196         /* if reservation is invalid then this will fail */
3197         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3198         if (err) {
3199                 ieee80211_vif_unreserve_chanctx(sdata);
3200                 goto out;
3201         }
3202
3203         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3204         if (err) {
3205                 ieee80211_vif_unreserve_chanctx(sdata);
3206                 goto out;
3207         }
3208
3209         sdata->csa_chandef = params->chandef;
3210         sdata->csa_block_tx = params->block_tx;
3211         sdata->vif.csa_active = true;
3212
3213         if (sdata->csa_block_tx)
3214                 ieee80211_stop_vif_queues(local, sdata,
3215                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3216
3217         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3218                                           params->count);
3219
3220         if (changed) {
3221                 ieee80211_bss_info_change_notify(sdata, changed);
3222                 drv_channel_switch_beacon(sdata, &params->chandef);
3223         } else {
3224                 /* if the beacon didn't change, we can finalize immediately */
3225                 ieee80211_csa_finalize(sdata);
3226         }
3227
3228 out:
3229         mutex_unlock(&local->chanctx_mtx);
3230         return err;
3231 }
3232
3233 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3234                              struct cfg80211_csa_settings *params)
3235 {
3236         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3237         struct ieee80211_local *local = sdata->local;
3238         int err;
3239
3240         mutex_lock(&local->mtx);
3241         err = __ieee80211_channel_switch(wiphy, dev, params);
3242         mutex_unlock(&local->mtx);
3243
3244         return err;
3245 }
3246
3247 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3248                              struct cfg80211_mgmt_tx_params *params,
3249                              u64 *cookie)
3250 {
3251         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3252         struct ieee80211_local *local = sdata->local;
3253         struct sk_buff *skb;
3254         struct sta_info *sta;
3255         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3256         bool need_offchan = false;
3257         u32 flags;
3258         int ret;
3259         u8 *data;
3260
3261         if (params->dont_wait_for_ack)
3262                 flags = IEEE80211_TX_CTL_NO_ACK;
3263         else
3264                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3265                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3266
3267         if (params->no_cck)
3268                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3269
3270         switch (sdata->vif.type) {
3271         case NL80211_IFTYPE_ADHOC:
3272                 if (!sdata->vif.bss_conf.ibss_joined)
3273                         need_offchan = true;
3274                 /* fall through */
3275 #ifdef CONFIG_MAC80211_MESH
3276         case NL80211_IFTYPE_MESH_POINT:
3277                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3278                     !sdata->u.mesh.mesh_id_len)
3279                         need_offchan = true;
3280                 /* fall through */
3281 #endif
3282         case NL80211_IFTYPE_AP:
3283         case NL80211_IFTYPE_AP_VLAN:
3284         case NL80211_IFTYPE_P2P_GO:
3285                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3286                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3287                     !rcu_access_pointer(sdata->bss->beacon))
3288                         need_offchan = true;
3289                 if (!ieee80211_is_action(mgmt->frame_control) ||
3290                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3291                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3292                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3293                         break;
3294                 rcu_read_lock();
3295                 sta = sta_info_get(sdata, mgmt->da);
3296                 rcu_read_unlock();
3297                 if (!sta)
3298                         return -ENOLINK;
3299                 break;
3300         case NL80211_IFTYPE_STATION:
3301         case NL80211_IFTYPE_P2P_CLIENT:
3302                 if (!sdata->u.mgd.associated)
3303                         need_offchan = true;
3304                 break;
3305         case NL80211_IFTYPE_P2P_DEVICE:
3306                 need_offchan = true;
3307                 break;
3308         default:
3309                 return -EOPNOTSUPP;
3310         }
3311
3312         /* configurations requiring offchan cannot work if no channel has been
3313          * specified
3314          */
3315         if (need_offchan && !params->chan)
3316                 return -EINVAL;
3317
3318         mutex_lock(&local->mtx);
3319
3320         /* Check if the operating channel is the requested channel */
3321         if (!need_offchan) {
3322                 struct ieee80211_chanctx_conf *chanctx_conf;
3323
3324                 rcu_read_lock();
3325                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3326
3327                 if (chanctx_conf) {
3328                         need_offchan = params->chan &&
3329                                        (params->chan !=
3330                                         chanctx_conf->def.chan);
3331                 } else if (!params->chan) {
3332                         ret = -EINVAL;
3333                         rcu_read_unlock();
3334                         goto out_unlock;
3335                 } else {
3336                         need_offchan = true;
3337                 }
3338                 rcu_read_unlock();
3339         }
3340
3341         if (need_offchan && !params->offchan) {
3342                 ret = -EBUSY;
3343                 goto out_unlock;
3344         }
3345
3346         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3347         if (!skb) {
3348                 ret = -ENOMEM;
3349                 goto out_unlock;
3350         }
3351         skb_reserve(skb, local->hw.extra_tx_headroom);
3352
3353         data = skb_put(skb, params->len);
3354         memcpy(data, params->buf, params->len);
3355
3356         /* Update CSA counters */
3357         if (sdata->vif.csa_active &&
3358             (sdata->vif.type == NL80211_IFTYPE_AP ||
3359              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3360             params->n_csa_offsets) {
3361                 int i;
3362                 struct beacon_data *beacon = NULL;
3363
3364                 rcu_read_lock();
3365
3366                 if (sdata->vif.type == NL80211_IFTYPE_AP)
3367                         beacon = rcu_dereference(sdata->u.ap.beacon);
3368                 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3369                         beacon = rcu_dereference(sdata->u.ibss.presp);
3370                 else if (ieee80211_vif_is_mesh(&sdata->vif))
3371                         beacon = rcu_dereference(sdata->u.mesh.beacon);
3372
3373                 if (beacon)
3374                         for (i = 0; i < params->n_csa_offsets; i++)
3375                                 data[params->csa_offsets[i]] =
3376                                         beacon->csa_current_counter;
3377
3378                 rcu_read_unlock();
3379         }
3380
3381         IEEE80211_SKB_CB(skb)->flags = flags;
3382
3383         skb->dev = sdata->dev;
3384
3385         if (!need_offchan) {
3386                 *cookie = (unsigned long) skb;
3387                 ieee80211_tx_skb(sdata, skb);
3388                 ret = 0;
3389                 goto out_unlock;
3390         }
3391
3392         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3393                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3394         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3395                 IEEE80211_SKB_CB(skb)->hw_queue =
3396                         local->hw.offchannel_tx_hw_queue;
3397
3398         /* This will handle all kinds of coalescing and immediate TX */
3399         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3400                                        params->wait, cookie, skb,
3401                                        IEEE80211_ROC_TYPE_MGMT_TX);
3402         if (ret)
3403                 kfree_skb(skb);
3404  out_unlock:
3405         mutex_unlock(&local->mtx);
3406         return ret;
3407 }
3408
3409 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3410                                          struct wireless_dev *wdev,
3411                                          u64 cookie)
3412 {
3413         struct ieee80211_local *local = wiphy_priv(wiphy);
3414
3415         return ieee80211_cancel_roc(local, cookie, true);
3416 }
3417
3418 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3419                                           struct wireless_dev *wdev,
3420                                           u16 frame_type, bool reg)
3421 {
3422         struct ieee80211_local *local = wiphy_priv(wiphy);
3423
3424         switch (frame_type) {
3425         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3426                 if (reg)
3427                         local->probe_req_reg++;
3428                 else
3429                         local->probe_req_reg--;
3430
3431                 if (!local->open_count)
3432                         break;
3433
3434                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3435                 break;
3436         default:
3437                 break;
3438         }
3439 }
3440
3441 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3442 {
3443         struct ieee80211_local *local = wiphy_priv(wiphy);
3444
3445         if (local->started)
3446                 return -EOPNOTSUPP;
3447
3448         return drv_set_antenna(local, tx_ant, rx_ant);
3449 }
3450
3451 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3452 {
3453         struct ieee80211_local *local = wiphy_priv(wiphy);
3454
3455         return drv_get_antenna(local, tx_ant, rx_ant);
3456 }
3457
3458 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3459                                     struct net_device *dev,
3460                                     struct cfg80211_gtk_rekey_data *data)
3461 {
3462         struct ieee80211_local *local = wiphy_priv(wiphy);
3463         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3464
3465         if (!local->ops->set_rekey_data)
3466                 return -EOPNOTSUPP;
3467
3468         drv_set_rekey_data(local, sdata, data);
3469
3470         return 0;
3471 }
3472
3473 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3474                                   const u8 *peer, u64 *cookie)
3475 {
3476         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3477         struct ieee80211_local *local = sdata->local;
3478         struct ieee80211_qos_hdr *nullfunc;
3479         struct sk_buff *skb;
3480         int size = sizeof(*nullfunc);
3481         __le16 fc;
3482         bool qos;
3483         struct ieee80211_tx_info *info;
3484         struct sta_info *sta;
3485         struct ieee80211_chanctx_conf *chanctx_conf;
3486         enum ieee80211_band band;
3487
3488         rcu_read_lock();
3489         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3490         if (WARN_ON(!chanctx_conf)) {
3491                 rcu_read_unlock();
3492                 return -EINVAL;
3493         }
3494         band = chanctx_conf->def.chan->band;
3495         sta = sta_info_get_bss(sdata, peer);
3496         if (sta) {
3497                 qos = sta->sta.wme;
3498         } else {
3499                 rcu_read_unlock();
3500                 return -ENOLINK;
3501         }
3502
3503         if (qos) {
3504                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3505                                  IEEE80211_STYPE_QOS_NULLFUNC |
3506                                  IEEE80211_FCTL_FROMDS);
3507         } else {
3508                 size -= 2;
3509                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3510                                  IEEE80211_STYPE_NULLFUNC |
3511                                  IEEE80211_FCTL_FROMDS);
3512         }
3513
3514         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3515         if (!skb) {
3516                 rcu_read_unlock();
3517                 return -ENOMEM;
3518         }
3519
3520         skb->dev = dev;
3521
3522         skb_reserve(skb, local->hw.extra_tx_headroom);
3523
3524         nullfunc = (void *) skb_put(skb, size);
3525         nullfunc->frame_control = fc;
3526         nullfunc->duration_id = 0;
3527         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3528         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3529         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3530         nullfunc->seq_ctrl = 0;
3531
3532         info = IEEE80211_SKB_CB(skb);
3533
3534         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3535                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3536         info->band = band;
3537
3538         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3539         skb->priority = 7;
3540         if (qos)
3541                 nullfunc->qos_ctrl = cpu_to_le16(7);
3542
3543         local_bh_disable();
3544         ieee80211_xmit(sdata, sta, skb);
3545         local_bh_enable();
3546         rcu_read_unlock();
3547
3548         *cookie = (unsigned long) skb;
3549         return 0;
3550 }
3551
3552 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3553                                      struct wireless_dev *wdev,
3554                                      struct cfg80211_chan_def *chandef)
3555 {
3556         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3557         struct ieee80211_local *local = wiphy_priv(wiphy);
3558         struct ieee80211_chanctx_conf *chanctx_conf;
3559         int ret = -ENODATA;
3560
3561         rcu_read_lock();
3562         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3563         if (chanctx_conf) {
3564                 *chandef = sdata->vif.bss_conf.chandef;
3565                 ret = 0;
3566         } else if (local->open_count > 0 &&
3567                    local->open_count == local->monitors &&
3568                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3569                 if (local->use_chanctx)
3570                         *chandef = local->monitor_chandef;
3571                 else
3572                         *chandef = local->_oper_chandef;
3573                 ret = 0;
3574         }
3575         rcu_read_unlock();
3576
3577         return ret;
3578 }
3579
3580 #ifdef CONFIG_PM
3581 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3582 {
3583         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3584 }
3585 #endif
3586
3587 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3588                                  struct net_device *dev,
3589                                  struct cfg80211_qos_map *qos_map)
3590 {
3591         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3592         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3593
3594         if (qos_map) {
3595                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3596                 if (!new_qos_map)
3597                         return -ENOMEM;
3598                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3599         } else {
3600                 /* A NULL qos_map was passed to disable QoS mapping */
3601                 new_qos_map = NULL;
3602         }
3603
3604         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3605         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3606         if (old_qos_map)
3607                 kfree_rcu(old_qos_map, rcu_head);
3608
3609         return 0;
3610 }
3611
3612 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3613                                       struct net_device *dev,
3614                                       struct cfg80211_chan_def *chandef)
3615 {
3616         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3617         int ret;
3618         u32 changed = 0;
3619
3620         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3621         if (ret == 0)
3622                 ieee80211_bss_info_change_notify(sdata, changed);
3623
3624         return ret;
3625 }
3626
3627 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3628                                u8 tsid, const u8 *peer, u8 up,
3629                                u16 admitted_time)
3630 {
3631         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3632         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3633         int ac = ieee802_1d_to_ac[up];
3634
3635         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3636                 return -EOPNOTSUPP;
3637
3638         if (!(sdata->wmm_acm & BIT(up)))
3639                 return -EINVAL;
3640
3641         if (ifmgd->tx_tspec[ac].admitted_time)
3642                 return -EBUSY;
3643
3644         if (admitted_time) {
3645                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3646                 ifmgd->tx_tspec[ac].tsid = tsid;
3647                 ifmgd->tx_tspec[ac].up = up;
3648         }
3649
3650         return 0;
3651 }
3652
3653 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3654                                u8 tsid, const u8 *peer)
3655 {
3656         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3657         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3658         struct ieee80211_local *local = wiphy_priv(wiphy);
3659         int ac;
3660
3661         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3662                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3663
3664                 /* skip unused entries */
3665                 if (!tx_tspec->admitted_time)
3666                         continue;
3667
3668                 if (tx_tspec->tsid != tsid)
3669                         continue;
3670
3671                 /* due to this new packets will be reassigned to non-ACM ACs */
3672                 tx_tspec->up = -1;
3673
3674                 /* Make sure that all packets have been sent to avoid to
3675                  * restore the QoS params on packets that are still on the
3676                  * queues.
3677                  */
3678                 synchronize_net();
3679                 ieee80211_flush_queues(local, sdata, false);
3680
3681                 /* restore the normal QoS parameters
3682                  * (unconditionally to avoid races)
3683                  */
3684                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3685                 tx_tspec->downgraded = false;
3686                 ieee80211_sta_handle_tspec_ac_params(sdata);
3687
3688                 /* finally clear all the data */
3689                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3690
3691                 return 0;
3692         }
3693
3694         return -ENOENT;
3695 }
3696
3697 const struct cfg80211_ops mac80211_config_ops = {
3698         .add_virtual_intf = ieee80211_add_iface,
3699         .del_virtual_intf = ieee80211_del_iface,
3700         .change_virtual_intf = ieee80211_change_iface,
3701         .start_p2p_device = ieee80211_start_p2p_device,
3702         .stop_p2p_device = ieee80211_stop_p2p_device,
3703         .add_key = ieee80211_add_key,
3704         .del_key = ieee80211_del_key,
3705         .get_key = ieee80211_get_key,
3706         .set_default_key = ieee80211_config_default_key,
3707         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3708         .start_ap = ieee80211_start_ap,
3709         .change_beacon = ieee80211_change_beacon,
3710         .stop_ap = ieee80211_stop_ap,
3711         .add_station = ieee80211_add_station,
3712         .del_station = ieee80211_del_station,
3713         .change_station = ieee80211_change_station,
3714         .get_station = ieee80211_get_station,
3715         .dump_station = ieee80211_dump_station,
3716         .dump_survey = ieee80211_dump_survey,
3717 #ifdef CONFIG_MAC80211_MESH
3718         .add_mpath = ieee80211_add_mpath,
3719         .del_mpath = ieee80211_del_mpath,
3720         .change_mpath = ieee80211_change_mpath,
3721         .get_mpath = ieee80211_get_mpath,
3722         .dump_mpath = ieee80211_dump_mpath,
3723         .get_mpp = ieee80211_get_mpp,
3724         .dump_mpp = ieee80211_dump_mpp,
3725         .update_mesh_config = ieee80211_update_mesh_config,
3726         .get_mesh_config = ieee80211_get_mesh_config,
3727         .join_mesh = ieee80211_join_mesh,
3728         .leave_mesh = ieee80211_leave_mesh,
3729 #endif
3730         .join_ocb = ieee80211_join_ocb,
3731         .leave_ocb = ieee80211_leave_ocb,
3732         .change_bss = ieee80211_change_bss,
3733         .set_txq_params = ieee80211_set_txq_params,
3734         .set_monitor_channel = ieee80211_set_monitor_channel,
3735         .suspend = ieee80211_suspend,
3736         .resume = ieee80211_resume,
3737         .scan = ieee80211_scan,
3738         .sched_scan_start = ieee80211_sched_scan_start,
3739         .sched_scan_stop = ieee80211_sched_scan_stop,
3740         .auth = ieee80211_auth,
3741         .assoc = ieee80211_assoc,
3742         .deauth = ieee80211_deauth,
3743         .disassoc = ieee80211_disassoc,
3744         .join_ibss = ieee80211_join_ibss,
3745         .leave_ibss = ieee80211_leave_ibss,
3746         .set_mcast_rate = ieee80211_set_mcast_rate,
3747         .set_wiphy_params = ieee80211_set_wiphy_params,
3748         .set_tx_power = ieee80211_set_tx_power,
3749         .get_tx_power = ieee80211_get_tx_power,
3750         .set_wds_peer = ieee80211_set_wds_peer,
3751         .rfkill_poll = ieee80211_rfkill_poll,
3752         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3753         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3754         .set_power_mgmt = ieee80211_set_power_mgmt,
3755         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3756         .remain_on_channel = ieee80211_remain_on_channel,
3757         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3758         .mgmt_tx = ieee80211_mgmt_tx,
3759         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3760         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3761         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3762         .set_antenna = ieee80211_set_antenna,
3763         .get_antenna = ieee80211_get_antenna,
3764         .set_rekey_data = ieee80211_set_rekey_data,
3765         .tdls_oper = ieee80211_tdls_oper,
3766         .tdls_mgmt = ieee80211_tdls_mgmt,
3767         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3768         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3769         .probe_client = ieee80211_probe_client,
3770         .set_noack_map = ieee80211_set_noack_map,
3771 #ifdef CONFIG_PM
3772         .set_wakeup = ieee80211_set_wakeup,
3773 #endif
3774         .get_channel = ieee80211_cfg_get_channel,
3775         .start_radar_detection = ieee80211_start_radar_detection,
3776         .channel_switch = ieee80211_channel_switch,
3777         .set_qos_map = ieee80211_set_qos_map,
3778         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3779         .add_tx_ts = ieee80211_add_tx_ts,
3780         .del_tx_ts = ieee80211_del_tx_ts,
3781 };