net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2015  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
 141         ieee80211_check_fast_xmit_iface(sdata);
 142
 143         return 0;
 144 }
 145
 146 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 147                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 148                              struct key_params *params)
 149 {
 150         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 151         struct ieee80211_local *local = sdata->local;
 152         struct sta_info *sta = NULL;
 153         const struct ieee80211_cipher_scheme *cs = NULL;
 154         struct ieee80211_key *key;
 155         int err;
 156
 157         if (!ieee80211_sdata_running(sdata))
 158                 return -ENETDOWN;
 159
 160         /* reject WEP and TKIP keys if WEP failed to initialize */
 161         switch (params->cipher) {
 162         case WLAN_CIPHER_SUITE_WEP40:
 163         case WLAN_CIPHER_SUITE_TKIP:
 164         case WLAN_CIPHER_SUITE_WEP104:
 165                 if (IS_ERR(local->wep_tx_tfm))
 166                         return -EINVAL;
 167                 break;
 168         case WLAN_CIPHER_SUITE_CCMP:
 169         case WLAN_CIPHER_SUITE_CCMP_256:
 170         case WLAN_CIPHER_SUITE_AES_CMAC:
 171         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 172         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 173         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 174         case WLAN_CIPHER_SUITE_GCMP:
 175         case WLAN_CIPHER_SUITE_GCMP_256:
 176                 break;
 177         default:
 178                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 179                 break;
 180         }
 181
 182         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 183                                   params->key, params->seq_len, params->seq,
 184                                   cs);
 185         if (IS_ERR(key))
 186                 return PTR_ERR(key);
 187
 188         if (pairwise)
 189                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 190
 191         mutex_lock(&local->sta_mtx);
 192
 193         if (mac_addr) {
 194                 if (ieee80211_vif_is_mesh(&sdata->vif))
 195                         sta = sta_info_get(sdata, mac_addr);
 196                 else
 197                         sta = sta_info_get_bss(sdata, mac_addr);
 198                 /*
 199                  * The ASSOC test makes sure the driver is ready to
 200                  * receive the key. When wpa_supplicant has roamed
 201                  * using FT, it attempts to set the key before
 202                  * association has completed, this rejects that attempt
 203                  * so it will set the key again after association.
 204                  *
 205                  * TODO: accept the key if we have a station entry and
 206                  *       add it to the device after the station.
 207                  */
 208                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 209                         ieee80211_key_free_unused(key);
 210                         err = -ENOENT;
 211                         goto out_unlock;
 212                 }
 213         }
 214
 215         switch (sdata->vif.type) {
 216         case NL80211_IFTYPE_STATION:
 217                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 218                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 219                 break;
 220         case NL80211_IFTYPE_AP:
 221         case NL80211_IFTYPE_AP_VLAN:
 222                 /* Keys without a station are used for TX only */
 223                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 224                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 225                 break;
 226         case NL80211_IFTYPE_ADHOC:
 227                 /* no MFP (yet) */
 228                 break;
 229         case NL80211_IFTYPE_MESH_POINT:
 230 #ifdef CONFIG_MAC80211_MESH
 231                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 232                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 233                 break;
 234 #endif
 235         case NL80211_IFTYPE_WDS:
 236         case NL80211_IFTYPE_MONITOR:
 237         case NL80211_IFTYPE_P2P_DEVICE:
 238         case NL80211_IFTYPE_UNSPECIFIED:
 239         case NUM_NL80211_IFTYPES:
 240         case NL80211_IFTYPE_P2P_CLIENT:
 241         case NL80211_IFTYPE_P2P_GO:
 242         case NL80211_IFTYPE_OCB:
 243                 /* shouldn't happen */
 244                 WARN_ON_ONCE(1);
 245                 break;
 246         }
 247
 248         if (sta)
 249                 sta->cipher_scheme = cs;
 250
 251         err = ieee80211_key_link(key, sdata, sta);
 252
 253  out_unlock:
 254         mutex_unlock(&local->sta_mtx);
 255
 256         return err;
 257 }
 258
 259 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 260                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 261 {
 262         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 263         struct ieee80211_local *local = sdata->local;
 264         struct sta_info *sta;
 265         struct ieee80211_key *key = NULL;
 266         int ret;
 267
 268         mutex_lock(&local->sta_mtx);
 269         mutex_lock(&local->key_mtx);
 270
 271         if (mac_addr) {
 272                 ret = -ENOENT;
 273
 274                 sta = sta_info_get_bss(sdata, mac_addr);
 275                 if (!sta)
 276                         goto out_unlock;
 277
 278                 if (pairwise)
 279                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 280                 else
 281                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 282         } else
 283                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 284
 285         if (!key) {
 286                 ret = -ENOENT;
 287                 goto out_unlock;
 288         }
 289
 290         ieee80211_key_free(key, true);
 291
 292         ret = 0;
 293  out_unlock:
 294         mutex_unlock(&local->key_mtx);
 295         mutex_unlock(&local->sta_mtx);
 296
 297         return ret;
 298 }
 299
 300 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 301                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 302                              void *cookie,
 303                              void (*callback)(void *cookie,
 304                                               struct key_params *params))
 305 {
 306         struct ieee80211_sub_if_data *sdata;
 307         struct sta_info *sta = NULL;
 308         u8 seq[6] = {0};
 309         struct key_params params;
 310         struct ieee80211_key *key = NULL;
 311         u64 pn64;
 312         u32 iv32;
 313         u16 iv16;
 314         int err = -ENOENT;
 315         struct ieee80211_key_seq kseq = {};
 316
 317         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 318
 319         rcu_read_lock();
 320
 321         if (mac_addr) {
 322                 sta = sta_info_get_bss(sdata, mac_addr);
 323                 if (!sta)
 324                         goto out;
 325
 326                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 327                         key = rcu_dereference(sta->ptk[key_idx]);
 328                 else if (!pairwise &&
 329                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 330                         key = rcu_dereference(sta->gtk[key_idx]);
 331         } else
 332                 key = rcu_dereference(sdata->keys[key_idx]);
 333
 334         if (!key)
 335                 goto out;
 336
 337         memset(&params, 0, sizeof(params));
 338
 339         params.cipher = key->conf.cipher;
 340
 341         switch (key->conf.cipher) {
 342         case WLAN_CIPHER_SUITE_TKIP:
 343                 iv32 = key->u.tkip.tx.iv32;
 344                 iv16 = key->u.tkip.tx.iv16;
 345
 346                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 347                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 348                         drv_get_key_seq(sdata->local, key, &kseq);
 349                         iv32 = kseq.tkip.iv32;
 350                         iv16 = kseq.tkip.iv16;
 351                 }
 352
 353                 seq[0] = iv16 & 0xff;
 354                 seq[1] = (iv16 >> 8) & 0xff;
 355                 seq[2] = iv32 & 0xff;
 356                 seq[3] = (iv32 >> 8) & 0xff;
 357                 seq[4] = (iv32 >> 16) & 0xff;
 358                 seq[5] = (iv32 >> 24) & 0xff;
 359                 params.seq = seq;
 360                 params.seq_len = 6;
 361                 break;
 362         case WLAN_CIPHER_SUITE_CCMP:
 363         case WLAN_CIPHER_SUITE_CCMP_256:
 364         case WLAN_CIPHER_SUITE_AES_CMAC:
 365         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 366                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 367                              offsetof(typeof(kseq), aes_cmac));
 368         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 369         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 370                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 371                              offsetof(typeof(kseq), aes_gmac));
 372         case WLAN_CIPHER_SUITE_GCMP:
 373         case WLAN_CIPHER_SUITE_GCMP_256:
 374                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 375                              offsetof(typeof(kseq), gcmp));
 376
 377                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 378                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 379                         drv_get_key_seq(sdata->local, key, &kseq);
 380                         memcpy(seq, kseq.ccmp.pn, 6);
 381                 } else {
 382                         pn64 = atomic64_read(&key->conf.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                 }
 390                 params.seq = seq;
 391                 params.seq_len = 6;
 392                 break;
 393         default:
 394                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 395                         break;
 396                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 397                         break;
 398                 drv_get_key_seq(sdata->local, key, &kseq);
 399                 params.seq = kseq.hw.seq;
 400                 params.seq_len = kseq.hw.seq_len;
 401                 break;
 402         }
 403
 404         params.key = key->conf.key;
 405         params.key_len = key->conf.keylen;
 406
 407         callback(cookie, &params);
 408         err = 0;
 409
 410  out:
 411         rcu_read_unlock();
 412         return err;
 413 }
 414
 415 static int ieee80211_config_default_key(struct wiphy *wiphy,
 416                                         struct net_device *dev,
 417                                         u8 key_idx, bool uni,
 418                                         bool multi)
 419 {
 420         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 421
 422         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 423
 424         return 0;
 425 }
 426
 427 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 428                                              struct net_device *dev,
 429                                              u8 key_idx)
 430 {
 431         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 432
 433         ieee80211_set_default_mgmt_key(sdata, key_idx);
 434
 435         return 0;
 436 }
 437
 438 void sta_set_rate_info_tx(struct sta_info *sta,
 439                           const struct ieee80211_tx_rate *rate,
 440                           struct rate_info *rinfo)
 441 {
 442         rinfo->flags = 0;
 443         if (rate->flags & IEEE80211_TX_RC_MCS) {
 444                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 445                 rinfo->mcs = rate->idx;
 446         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 447                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 448                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 449                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 450         } else {
 451                 struct ieee80211_supported_band *sband;
 452                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 453                 u16 brate;
 454
 455                 sband = sta->local->hw.wiphy->bands[
 456                                 ieee80211_get_sdata_band(sta->sdata)];
 457                 brate = sband->bitrates[rate->idx].bitrate;
 458                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 459         }
 460         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 461                 rinfo->bw = RATE_INFO_BW_40;
 462         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 463                 rinfo->bw = RATE_INFO_BW_80;
 464         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 465                 rinfo->bw = RATE_INFO_BW_160;
 466         else
 467                 rinfo->bw = RATE_INFO_BW_20;
 468         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 469                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 470 }
 471
 472 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 473 {
 474         rinfo->flags = 0;
 475
 476         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 477                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 478                 rinfo->mcs = sta->last_rx_rate_idx;
 479         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 480                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 481                 rinfo->nss = sta->last_rx_rate_vht_nss;
 482                 rinfo->mcs = sta->last_rx_rate_idx;
 483         } else {
 484                 struct ieee80211_supported_band *sband;
 485                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 486                 u16 brate;
 487
 488                 sband = sta->local->hw.wiphy->bands[
 489                                 ieee80211_get_sdata_band(sta->sdata)];
 490                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 491                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 492         }
 493
 494         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 495                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 496
 497         if (sta->last_rx_rate_flag & RX_FLAG_5MHZ)
 498                 rinfo->bw = RATE_INFO_BW_5;
 499         else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ)
 500                 rinfo->bw = RATE_INFO_BW_10;
 501         else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 502                 rinfo->bw = RATE_INFO_BW_40;
 503         else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
 504                 rinfo->bw = RATE_INFO_BW_80;
 505         else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
 506                 rinfo->bw = RATE_INFO_BW_160;
 507         else
 508                 rinfo->bw = RATE_INFO_BW_20;
 509 }
 510
 511 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 512                                   int idx, u8 *mac, struct station_info *sinfo)
 513 {
 514         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 515         struct ieee80211_local *local = sdata->local;
 516         struct sta_info *sta;
 517         int ret = -ENOENT;
 518
 519         mutex_lock(&local->sta_mtx);
 520
 521         sta = sta_info_get_by_idx(sdata, idx);
 522         if (sta) {
 523                 ret = 0;
 524                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 525                 sta_set_sinfo(sta, sinfo);
 526         }
 527
 528         mutex_unlock(&local->sta_mtx);
 529
 530         return ret;
 531 }
 532
 533 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 534                                  int idx, struct survey_info *survey)
 535 {
 536         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 537
 538         return drv_get_survey(local, idx, survey);
 539 }
 540
 541 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 542                                  const u8 *mac, struct station_info *sinfo)
 543 {
 544         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 545         struct ieee80211_local *local = sdata->local;
 546         struct sta_info *sta;
 547         int ret = -ENOENT;
 548
 549         mutex_lock(&local->sta_mtx);
 550
 551         sta = sta_info_get_bss(sdata, mac);
 552         if (sta) {
 553                 ret = 0;
 554                 sta_set_sinfo(sta, sinfo);
 555         }
 556
 557         mutex_unlock(&local->sta_mtx);
 558
 559         return ret;
 560 }
 561
 562 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 563                                          struct cfg80211_chan_def *chandef)
 564 {
 565         struct ieee80211_local *local = wiphy_priv(wiphy);
 566         struct ieee80211_sub_if_data *sdata;
 567         int ret = 0;
 568
 569         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 570                 return 0;
 571
 572         mutex_lock(&local->mtx);
 573         mutex_lock(&local->iflist_mtx);
 574         if (local->use_chanctx) {
 575                 sdata = rcu_dereference_protected(
 576                                 local->monitor_sdata,
 577                                 lockdep_is_held(&local->iflist_mtx));
 578                 if (sdata) {
 579                         ieee80211_vif_release_channel(sdata);
 580                         ret = ieee80211_vif_use_channel(sdata, chandef,
 581                                         IEEE80211_CHANCTX_EXCLUSIVE);
 582                 }
 583         } else if (local->open_count == local->monitors) {
 584                 local->_oper_chandef = *chandef;
 585                 ieee80211_hw_config(local, 0);
 586         }
 587
 588         if (ret == 0)
 589                 local->monitor_chandef = *chandef;
 590         mutex_unlock(&local->iflist_mtx);
 591         mutex_unlock(&local->mtx);
 592
 593         return ret;
 594 }
 595
 596 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 597                                     const u8 *resp, size_t resp_len,
 598                                     const struct ieee80211_csa_settings *csa)
 599 {
 600         struct probe_resp *new, *old;
 601
 602         if (!resp || !resp_len)
 603                 return 1;
 604
 605         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 606
 607         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 608         if (!new)
 609                 return -ENOMEM;
 610
 611         new->len = resp_len;
 612         memcpy(new->data, resp, resp_len);
 613
 614         if (csa)
 615                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 616                        csa->n_counter_offsets_presp *
 617                        sizeof(new->csa_counter_offsets[0]));
 618
 619         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 620         if (old)
 621                 kfree_rcu(old, rcu_head);
 622
 623         return 0;
 624 }
 625
 626 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 627                                    struct cfg80211_beacon_data *params,
 628                                    const struct ieee80211_csa_settings *csa)
 629 {
 630         struct beacon_data *new, *old;
 631         int new_head_len, new_tail_len;
 632         int size, err;
 633         u32 changed = BSS_CHANGED_BEACON;
 634
 635         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 636
 637
 638         /* Need to have a beacon head if we don't have one yet */
 639         if (!params->head && !old)
 640                 return -EINVAL;
 641
 642         /* new or old head? */
 643         if (params->head)
 644                 new_head_len = params->head_len;
 645         else
 646                 new_head_len = old->head_len;
 647
 648         /* new or old tail? */
 649         if (params->tail || !old)
 650                 /* params->tail_len will be zero for !params->tail */
 651                 new_tail_len = params->tail_len;
 652         else
 653                 new_tail_len = old->tail_len;
 654
 655         size = sizeof(*new) + new_head_len + new_tail_len;
 656
 657         new = kzalloc(size, GFP_KERNEL);
 658         if (!new)
 659                 return -ENOMEM;
 660
 661         /* start filling the new info now */
 662
 663         /*
 664          * pointers go into the block we allocated,
 665          * memory is | beacon_data | head | tail |
 666          */
 667         new->head = ((u8 *) new) + sizeof(*new);
 668         new->tail = new->head + new_head_len;
 669         new->head_len = new_head_len;
 670         new->tail_len = new_tail_len;
 671
 672         if (csa) {
 673                 new->csa_current_counter = csa->count;
 674                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 675                        csa->n_counter_offsets_beacon *
 676                        sizeof(new->csa_counter_offsets[0]));
 677         }
 678
 679         /* copy in head */
 680         if (params->head)
 681                 memcpy(new->head, params->head, new_head_len);
 682         else
 683                 memcpy(new->head, old->head, new_head_len);
 684
 685         /* copy in optional tail */
 686         if (params->tail)
 687                 memcpy(new->tail, params->tail, new_tail_len);
 688         else
 689                 if (old)
 690                         memcpy(new->tail, old->tail, new_tail_len);
 691
 692         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 693                                        params->probe_resp_len, csa);
 694         if (err < 0)
 695                 return err;
 696         if (err == 0)
 697                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 698
 699         rcu_assign_pointer(sdata->u.ap.beacon, new);
 700
 701         if (old)
 702                 kfree_rcu(old, rcu_head);
 703
 704         return changed;
 705 }
 706
 707 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 708                               struct cfg80211_ap_settings *params)
 709 {
 710         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 711         struct ieee80211_local *local = sdata->local;
 712         struct beacon_data *old;
 713         struct ieee80211_sub_if_data *vlan;
 714         u32 changed = BSS_CHANGED_BEACON_INT |
 715                       BSS_CHANGED_BEACON_ENABLED |
 716                       BSS_CHANGED_BEACON |
 717                       BSS_CHANGED_SSID |
 718                       BSS_CHANGED_P2P_PS |
 719                       BSS_CHANGED_TXPOWER;
 720         int err;
 721
 722         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 723         if (old)
 724                 return -EALREADY;
 725
 726         switch (params->smps_mode) {
 727         case NL80211_SMPS_OFF:
 728                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 729                 break;
 730         case NL80211_SMPS_STATIC:
 731                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 732                 break;
 733         case NL80211_SMPS_DYNAMIC:
 734                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 735                 break;
 736         default:
 737                 return -EINVAL;
 738         }
 739         sdata->needed_rx_chains = sdata->local->rx_chains;
 740
 741         mutex_lock(&local->mtx);
 742         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 743                                         IEEE80211_CHANCTX_SHARED);
 744         if (!err)
 745                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 746         mutex_unlock(&local->mtx);
 747         if (err)
 748                 return err;
 749
 750         /*
 751          * Apply control port protocol, this allows us to
 752          * not encrypt dynamic WEP control frames.
 753          */
 754         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 755         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 756         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 757                                                         &params->crypto,
 758                                                         sdata->vif.type);
 759
 760         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 761                 vlan->control_port_protocol =
 762                         params->crypto.control_port_ethertype;
 763                 vlan->control_port_no_encrypt =
 764                         params->crypto.control_port_no_encrypt;
 765                 vlan->encrypt_headroom =
 766                         ieee80211_cs_headroom(sdata->local,
 767                                               &params->crypto,
 768                                               vlan->vif.type);
 769         }
 770
 771         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 772         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 773         sdata->vif.bss_conf.enable_beacon = true;
 774
 775         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 776         if (params->ssid_len)
 777                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 778                        params->ssid_len);
 779         sdata->vif.bss_conf.hidden_ssid =
 780                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 781
 782         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 783                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 784         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 785                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 786         if (params->p2p_opp_ps)
 787                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 788                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 789
 790         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 791         if (err < 0) {
 792                 ieee80211_vif_release_channel(sdata);
 793                 return err;
 794         }
 795         changed |= err;
 796
 797         err = drv_start_ap(sdata->local, sdata);
 798         if (err) {
 799                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 800
 801                 if (old)
 802                         kfree_rcu(old, rcu_head);
 803                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 804                 ieee80211_vif_release_channel(sdata);
 805                 return err;
 806         }
 807
 808         ieee80211_recalc_dtim(local, sdata);
 809         ieee80211_bss_info_change_notify(sdata, changed);
 810
 811         netif_carrier_on(dev);
 812         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 813                 netif_carrier_on(vlan->dev);
 814
 815         return 0;
 816 }
 817
 818 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 819                                    struct cfg80211_beacon_data *params)
 820 {
 821         struct ieee80211_sub_if_data *sdata;
 822         struct beacon_data *old;
 823         int err;
 824
 825         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 826         sdata_assert_lock(sdata);
 827
 828         /* don't allow changing the beacon while CSA is in place - offset
 829          * of channel switch counter may change
 830          */
 831         if (sdata->vif.csa_active)
 832                 return -EBUSY;
 833
 834         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 835         if (!old)
 836                 return -ENOENT;
 837
 838         err = ieee80211_assign_beacon(sdata, params, NULL);
 839         if (err < 0)
 840                 return err;
 841         ieee80211_bss_info_change_notify(sdata, err);
 842         return 0;
 843 }
 844
 845 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 846 {
 847         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 848         struct ieee80211_sub_if_data *vlan;
 849         struct ieee80211_local *local = sdata->local;
 850         struct beacon_data *old_beacon;
 851         struct probe_resp *old_probe_resp;
 852         struct cfg80211_chan_def chandef;
 853
 854         sdata_assert_lock(sdata);
 855
 856         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 857         if (!old_beacon)
 858                 return -ENOENT;
 859         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 860
 861         /* abort any running channel switch */
 862         mutex_lock(&local->mtx);
 863         sdata->vif.csa_active = false;
 864         if (sdata->csa_block_tx) {
 865                 ieee80211_wake_vif_queues(local, sdata,
 866                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 867                 sdata->csa_block_tx = false;
 868         }
 869
 870         mutex_unlock(&local->mtx);
 871
 872         kfree(sdata->u.ap.next_beacon);
 873         sdata->u.ap.next_beacon = NULL;
 874
 875         /* turn off carrier for this interface and dependent VLANs */
 876         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 877                 netif_carrier_off(vlan->dev);
 878         netif_carrier_off(dev);
 879
 880         /* remove beacon and probe response */
 881         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 882         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 883         kfree_rcu(old_beacon, rcu_head);
 884         if (old_probe_resp)
 885                 kfree_rcu(old_probe_resp, rcu_head);
 886         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 887
 888         __sta_info_flush(sdata, true);
 889         ieee80211_free_keys(sdata, true);
 890
 891         sdata->vif.bss_conf.enable_beacon = false;
 892         sdata->vif.bss_conf.ssid_len = 0;
 893         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 894         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 895
 896         if (sdata->wdev.cac_started) {
 897                 chandef = sdata->vif.bss_conf.chandef;
 898                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 899                 cfg80211_cac_event(sdata->dev, &chandef,
 900                                    NL80211_RADAR_CAC_ABORTED,
 901                                    GFP_KERNEL);
 902         }
 903
 904         drv_stop_ap(sdata->local, sdata);
 905
 906         /* free all potentially still buffered bcast frames */
 907         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 908         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 909
 910         mutex_lock(&local->mtx);
 911         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 912         ieee80211_vif_release_channel(sdata);
 913         mutex_unlock(&local->mtx);
 914
 915         return 0;
 916 }
 917
 918 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 919 struct iapp_layer2_update {
 920         u8 da[ETH_ALEN];        /* broadcast */
 921         u8 sa[ETH_ALEN];        /* STA addr */
 922         __be16 len;             /* 6 */
 923         u8 dsap;                /* 0 */
 924         u8 ssap;                /* 0 */
 925         u8 control;
 926         u8 xid_info[3];
 927 } __packed;
 928
 929 static void ieee80211_send_layer2_update(struct sta_info *sta)
 930 {
 931         struct iapp_layer2_update *msg;
 932         struct sk_buff *skb;
 933
 934         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 935          * bridge devices */
 936
 937         skb = dev_alloc_skb(sizeof(*msg));
 938         if (!skb)
 939                 return;
 940         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 941
 942         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 943          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 944
 945         eth_broadcast_addr(msg->da);
 946         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 947         msg->len = htons(6);
 948         msg->dsap = 0;
 949         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 950         msg->control = 0xaf;    /* XID response lsb.1111F101.
 951                                  * F=0 (no poll command; unsolicited frame) */
 952         msg->xid_info[0] = 0x81;        /* XID format identifier */
 953         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 954         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 955
 956         skb->dev = sta->sdata->dev;
 957         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 958         memset(skb->cb, 0, sizeof(skb->cb));
 959         netif_rx_ni(skb);
 960 }
 961
 962 static int sta_apply_auth_flags(struct ieee80211_local *local,
 963                                 struct sta_info *sta,
 964                                 u32 mask, u32 set)
 965 {
 966         int ret;
 967
 968         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 969             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 970             !test_sta_flag(sta, WLAN_STA_AUTH)) {
 971                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 972                 if (ret)
 973                         return ret;
 974         }
 975
 976         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 977             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 978             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 979                 /*
 980                  * When peer becomes associated, init rate control as
 981                  * well. Some drivers require rate control initialized
 982                  * before drv_sta_state() is called.
 983                  */
 984                 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 985                         rate_control_rate_init(sta);
 986
 987                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 988                 if (ret)
 989                         return ret;
 990         }
 991
 992         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 993                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 994                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 995                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 996                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 997                 else
 998                         ret = 0;
 999                 if (ret)
1000                         return ret;
1001         }
1002
1003         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1004             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1005             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1006                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1007                 if (ret)
1008                         return ret;
1009         }
1010
1011         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1012             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1013             test_sta_flag(sta, WLAN_STA_AUTH)) {
1014                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1015                 if (ret)
1016                         return ret;
1017         }
1018
1019         return 0;
1020 }
1021
1022 static void sta_apply_mesh_params(struct ieee80211_local *local,
1023                                   struct sta_info *sta,
1024                                   struct station_parameters *params)
1025 {
1026 #ifdef CONFIG_MAC80211_MESH
1027         struct ieee80211_sub_if_data *sdata = sta->sdata;
1028         u32 changed = 0;
1029
1030         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1031                 switch (params->plink_state) {
1032                 case NL80211_PLINK_ESTAB:
1033                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1034                                 changed = mesh_plink_inc_estab_count(sdata);
1035                         sta->mesh->plink_state = params->plink_state;
1036
1037                         ieee80211_mps_sta_status_update(sta);
1038                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1039                                       sdata->u.mesh.mshcfg.power_mode);
1040                         break;
1041                 case NL80211_PLINK_LISTEN:
1042                 case NL80211_PLINK_BLOCKED:
1043                 case NL80211_PLINK_OPN_SNT:
1044                 case NL80211_PLINK_OPN_RCVD:
1045                 case NL80211_PLINK_CNF_RCVD:
1046                 case NL80211_PLINK_HOLDING:
1047                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1048                                 changed = mesh_plink_dec_estab_count(sdata);
1049                         sta->mesh->plink_state = params->plink_state;
1050
1051                         ieee80211_mps_sta_status_update(sta);
1052                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1053                                         NL80211_MESH_POWER_UNKNOWN);
1054                         break;
1055                 default:
1056                         /*  nothing  */
1057                         break;
1058                 }
1059         }
1060
1061         switch (params->plink_action) {
1062         case NL80211_PLINK_ACTION_NO_ACTION:
1063                 /* nothing */
1064                 break;
1065         case NL80211_PLINK_ACTION_OPEN:
1066                 changed |= mesh_plink_open(sta);
1067                 break;
1068         case NL80211_PLINK_ACTION_BLOCK:
1069                 changed |= mesh_plink_block(sta);
1070                 break;
1071         }
1072
1073         if (params->local_pm)
1074                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1075                                                           params->local_pm);
1076
1077         ieee80211_mbss_info_change_notify(sdata, changed);
1078 #endif
1079 }
1080
1081 static int sta_apply_parameters(struct ieee80211_local *local,
1082                                 struct sta_info *sta,
1083                                 struct station_parameters *params)
1084 {
1085         int ret = 0;
1086         struct ieee80211_supported_band *sband;
1087         struct ieee80211_sub_if_data *sdata = sta->sdata;
1088         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1089         u32 mask, set;
1090
1091         sband = local->hw.wiphy->bands[band];
1092
1093         mask = params->sta_flags_mask;
1094         set = params->sta_flags_set;
1095
1096         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1097                 /*
1098                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1099                  * API but must follow AUTHENTICATED for driver state.
1100                  */
1101                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1102                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1103                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1104                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1105         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1106                 /*
1107                  * TDLS -- everything follows authorized, but
1108                  * only becoming authorized is possible, not
1109                  * going back
1110                  */
1111                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1112                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1113                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1114                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1115                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1116                 }
1117         }
1118
1119         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1120             local->hw.queues >= IEEE80211_NUM_ACS)
1121                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1122
1123         /* auth flags will be set later for TDLS stations */
1124         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1125                 ret = sta_apply_auth_flags(local, sta, mask, set);
1126                 if (ret)
1127                         return ret;
1128         }
1129
1130         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1131                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1132                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1133                 else
1134                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1135         }
1136
1137         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1138                 if (set & BIT(NL80211_STA_FLAG_MFP))
1139                         set_sta_flag(sta, WLAN_STA_MFP);
1140                 else
1141                         clear_sta_flag(sta, WLAN_STA_MFP);
1142         }
1143
1144         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1145                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1146                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1147                 else
1148                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1149         }
1150
1151         /* mark TDLS channel switch support, if the AP allows it */
1152         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1153             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1154             params->ext_capab_len >= 4 &&
1155             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1156                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1157
1158         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1159             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1160             params->ext_capab_len >= 8 &&
1161             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1162                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1163
1164         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1165                 sta->sta.uapsd_queues = params->uapsd_queues;
1166                 sta->sta.max_sp = params->max_sp;
1167         }
1168
1169         /*
1170          * cfg80211 validates this (1-2007) and allows setting the AID
1171          * only when creating a new station entry
1172          */
1173         if (params->aid)
1174                 sta->sta.aid = params->aid;
1175
1176         /*
1177          * Some of the following updates would be racy if called on an
1178          * existing station, via ieee80211_change_station(). However,
1179          * all such changes are rejected by cfg80211 except for updates
1180          * changing the supported rates on an existing but not yet used
1181          * TDLS peer.
1182          */
1183
1184         if (params->listen_interval >= 0)
1185                 sta->listen_interval = params->listen_interval;
1186
1187         if (params->supported_rates) {
1188                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1189                                          sband, params->supported_rates,
1190                                          params->supported_rates_len,
1191                                          &sta->sta.supp_rates[band]);
1192         }
1193
1194         if (params->ht_capa)
1195                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1196                                                   params->ht_capa, sta);
1197
1198         if (params->vht_capa)
1199                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1200                                                     params->vht_capa, sta);
1201
1202         if (params->opmode_notif_used) {
1203                 /* returned value is only needed for rc update, but the
1204                  * rc isn't initialized here yet, so ignore it
1205                  */
1206                 __ieee80211_vht_handle_opmode(sdata, sta,
1207                                               params->opmode_notif,
1208                                               band, false);
1209         }
1210
1211         if (ieee80211_vif_is_mesh(&sdata->vif))
1212                 sta_apply_mesh_params(local, sta, params);
1213
1214         /* set the STA state after all sta info from usermode has been set */
1215         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1216                 ret = sta_apply_auth_flags(local, sta, mask, set);
1217                 if (ret)
1218                         return ret;
1219         }
1220
1221         return 0;
1222 }
1223
1224 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1225                                  const u8 *mac,
1226                                  struct station_parameters *params)
1227 {
1228         struct ieee80211_local *local = wiphy_priv(wiphy);
1229         struct sta_info *sta;
1230         struct ieee80211_sub_if_data *sdata;
1231         int err;
1232         int layer2_update;
1233
1234         if (params->vlan) {
1235                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1236
1237                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1238                     sdata->vif.type != NL80211_IFTYPE_AP)
1239                         return -EINVAL;
1240         } else
1241                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1242
1243         if (ether_addr_equal(mac, sdata->vif.addr))
1244                 return -EINVAL;
1245
1246         if (is_multicast_ether_addr(mac))
1247                 return -EINVAL;
1248
1249         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1250         if (!sta)
1251                 return -ENOMEM;
1252
1253         /*
1254          * defaults -- if userspace wants something else we'll
1255          * change it accordingly in sta_apply_parameters()
1256          */
1257         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1258                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1259                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1260         } else {
1261                 sta->sta.tdls = true;
1262         }
1263
1264         err = sta_apply_parameters(local, sta, params);
1265         if (err) {
1266                 sta_info_free(local, sta);
1267                 return err;
1268         }
1269
1270         /*
1271          * for TDLS, rate control should be initialized only when
1272          * rates are known and station is marked authorized
1273          */
1274         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1275                 rate_control_rate_init(sta);
1276
1277         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1278                 sdata->vif.type == NL80211_IFTYPE_AP;
1279
1280         err = sta_info_insert_rcu(sta);
1281         if (err) {
1282                 rcu_read_unlock();
1283                 return err;
1284         }
1285
1286         if (layer2_update)
1287                 ieee80211_send_layer2_update(sta);
1288
1289         rcu_read_unlock();
1290
1291         return 0;
1292 }
1293
1294 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1295                                  struct station_del_parameters *params)
1296 {
1297         struct ieee80211_sub_if_data *sdata;
1298
1299         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1300
1301         if (params->mac)
1302                 return sta_info_destroy_addr_bss(sdata, params->mac);
1303
1304         sta_info_flush(sdata);
1305         return 0;
1306 }
1307
1308 static int ieee80211_change_station(struct wiphy *wiphy,
1309                                     struct net_device *dev, const u8 *mac,
1310                                     struct station_parameters *params)
1311 {
1312         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1313         struct ieee80211_local *local = wiphy_priv(wiphy);
1314         struct sta_info *sta;
1315         struct ieee80211_sub_if_data *vlansdata;
1316         enum cfg80211_station_type statype;
1317         int err;
1318
1319         mutex_lock(&local->sta_mtx);
1320
1321         sta = sta_info_get_bss(sdata, mac);
1322         if (!sta) {
1323                 err = -ENOENT;
1324                 goto out_err;
1325         }
1326
1327         switch (sdata->vif.type) {
1328         case NL80211_IFTYPE_MESH_POINT:
1329                 if (sdata->u.mesh.user_mpm)
1330                         statype = CFG80211_STA_MESH_PEER_USER;
1331                 else
1332                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1333                 break;
1334         case NL80211_IFTYPE_ADHOC:
1335                 statype = CFG80211_STA_IBSS;
1336                 break;
1337         case NL80211_IFTYPE_STATION:
1338                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1339                         statype = CFG80211_STA_AP_STA;
1340                         break;
1341                 }
1342                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1343                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1344                 else
1345                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1346                 break;
1347         case NL80211_IFTYPE_AP:
1348         case NL80211_IFTYPE_AP_VLAN:
1349                 statype = CFG80211_STA_AP_CLIENT;
1350                 break;
1351         default:
1352                 err = -EOPNOTSUPP;
1353                 goto out_err;
1354         }
1355
1356         err = cfg80211_check_station_change(wiphy, params, statype);
1357         if (err)
1358                 goto out_err;
1359
1360         if (params->vlan && params->vlan != sta->sdata->dev) {
1361                 bool prev_4addr = false;
1362                 bool new_4addr = false;
1363
1364                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1365
1366                 if (params->vlan->ieee80211_ptr->use_4addr) {
1367                         if (vlansdata->u.vlan.sta) {
1368                                 err = -EBUSY;
1369                                 goto out_err;
1370                         }
1371
1372                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1373                         new_4addr = true;
1374                 }
1375
1376                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1377                     sta->sdata->u.vlan.sta) {
1378                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1379                         prev_4addr = true;
1380                 }
1381
1382                 sta->sdata = vlansdata;
1383                 ieee80211_check_fast_xmit(sta);
1384
1385                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1386                     prev_4addr != new_4addr) {
1387                         if (new_4addr)
1388                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1389                         else
1390                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1391                 }
1392
1393                 ieee80211_send_layer2_update(sta);
1394         }
1395
1396         err = sta_apply_parameters(local, sta, params);
1397         if (err)
1398                 goto out_err;
1399
1400         mutex_unlock(&local->sta_mtx);
1401
1402         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1403              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1404             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1405             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1406             sta_info_tx_streams(sta) != 1) {
1407                 ht_dbg(sta->sdata,
1408                        "%pM just authorized and MIMO capable - update SMPS\n",
1409                        sta->sta.addr);
1410                 ieee80211_send_smps_action(sta->sdata,
1411                         sta->sdata->bss->req_smps,
1412                         sta->sta.addr,
1413                         sta->sdata->vif.bss_conf.bssid);
1414         }
1415
1416         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1417             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1418                 ieee80211_recalc_ps(local, -1);
1419                 ieee80211_recalc_ps_vif(sdata);
1420         }
1421
1422         return 0;
1423 out_err:
1424         mutex_unlock(&local->sta_mtx);
1425         return err;
1426 }
1427
1428 #ifdef CONFIG_MAC80211_MESH
1429 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1430                                const u8 *dst, const u8 *next_hop)
1431 {
1432         struct ieee80211_sub_if_data *sdata;
1433         struct mesh_path *mpath;
1434         struct sta_info *sta;
1435
1436         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1437
1438         rcu_read_lock();
1439         sta = sta_info_get(sdata, next_hop);
1440         if (!sta) {
1441                 rcu_read_unlock();
1442                 return -ENOENT;
1443         }
1444
1445         mpath = mesh_path_add(sdata, dst);
1446         if (IS_ERR(mpath)) {
1447                 rcu_read_unlock();
1448                 return PTR_ERR(mpath);
1449         }
1450
1451         mesh_path_fix_nexthop(mpath, sta);
1452
1453         rcu_read_unlock();
1454         return 0;
1455 }
1456
1457 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1458                                const u8 *dst)
1459 {
1460         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1461
1462         if (dst)
1463                 return mesh_path_del(sdata, dst);
1464
1465         mesh_path_flush_by_iface(sdata);
1466         return 0;
1467 }
1468
1469 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1470                                   const u8 *dst, const u8 *next_hop)
1471 {
1472         struct ieee80211_sub_if_data *sdata;
1473         struct mesh_path *mpath;
1474         struct sta_info *sta;
1475
1476         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1477
1478         rcu_read_lock();
1479
1480         sta = sta_info_get(sdata, next_hop);
1481         if (!sta) {
1482                 rcu_read_unlock();
1483                 return -ENOENT;
1484         }
1485
1486         mpath = mesh_path_lookup(sdata, dst);
1487         if (!mpath) {
1488                 rcu_read_unlock();
1489                 return -ENOENT;
1490         }
1491
1492         mesh_path_fix_nexthop(mpath, sta);
1493
1494         rcu_read_unlock();
1495         return 0;
1496 }
1497
1498 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1499                             struct mpath_info *pinfo)
1500 {
1501         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1502
1503         if (next_hop_sta)
1504                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1505         else
1506                 eth_zero_addr(next_hop);
1507
1508         memset(pinfo, 0, sizeof(*pinfo));
1509
1510         pinfo->generation = mesh_paths_generation;
1511
1512         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1513                         MPATH_INFO_SN |
1514                         MPATH_INFO_METRIC |
1515                         MPATH_INFO_EXPTIME |
1516                         MPATH_INFO_DISCOVERY_TIMEOUT |
1517                         MPATH_INFO_DISCOVERY_RETRIES |
1518                         MPATH_INFO_FLAGS;
1519
1520         pinfo->frame_qlen = mpath->frame_queue.qlen;
1521         pinfo->sn = mpath->sn;
1522         pinfo->metric = mpath->metric;
1523         if (time_before(jiffies, mpath->exp_time))
1524                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1525         pinfo->discovery_timeout =
1526                         jiffies_to_msecs(mpath->discovery_timeout);
1527         pinfo->discovery_retries = mpath->discovery_retries;
1528         if (mpath->flags & MESH_PATH_ACTIVE)
1529                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1530         if (mpath->flags & MESH_PATH_RESOLVING)
1531                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1532         if (mpath->flags & MESH_PATH_SN_VALID)
1533                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1534         if (mpath->flags & MESH_PATH_FIXED)
1535                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1536         if (mpath->flags & MESH_PATH_RESOLVED)
1537                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1538 }
1539
1540 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1541                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1542
1543 {
1544         struct ieee80211_sub_if_data *sdata;
1545         struct mesh_path *mpath;
1546
1547         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1548
1549         rcu_read_lock();
1550         mpath = mesh_path_lookup(sdata, dst);
1551         if (!mpath) {
1552                 rcu_read_unlock();
1553                 return -ENOENT;
1554         }
1555         memcpy(dst, mpath->dst, ETH_ALEN);
1556         mpath_set_pinfo(mpath, next_hop, pinfo);
1557         rcu_read_unlock();
1558         return 0;
1559 }
1560
1561 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1562                                 int idx, u8 *dst, u8 *next_hop,
1563                                 struct mpath_info *pinfo)
1564 {
1565         struct ieee80211_sub_if_data *sdata;
1566         struct mesh_path *mpath;
1567
1568         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1569
1570         rcu_read_lock();
1571         mpath = mesh_path_lookup_by_idx(sdata, idx);
1572         if (!mpath) {
1573                 rcu_read_unlock();
1574                 return -ENOENT;
1575         }
1576         memcpy(dst, mpath->dst, ETH_ALEN);
1577         mpath_set_pinfo(mpath, next_hop, pinfo);
1578         rcu_read_unlock();
1579         return 0;
1580 }
1581
1582 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1583                           struct mpath_info *pinfo)
1584 {
1585         memset(pinfo, 0, sizeof(*pinfo));
1586         memcpy(mpp, mpath->mpp, ETH_ALEN);
1587
1588         pinfo->generation = mpp_paths_generation;
1589 }
1590
1591 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1592                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1593
1594 {
1595         struct ieee80211_sub_if_data *sdata;
1596         struct mesh_path *mpath;
1597
1598         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1599
1600         rcu_read_lock();
1601         mpath = mpp_path_lookup(sdata, dst);
1602         if (!mpath) {
1603                 rcu_read_unlock();
1604                 return -ENOENT;
1605         }
1606         memcpy(dst, mpath->dst, ETH_ALEN);
1607         mpp_set_pinfo(mpath, mpp, pinfo);
1608         rcu_read_unlock();
1609         return 0;
1610 }
1611
1612 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1613                               int idx, u8 *dst, u8 *mpp,
1614                               struct mpath_info *pinfo)
1615 {
1616         struct ieee80211_sub_if_data *sdata;
1617         struct mesh_path *mpath;
1618
1619         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1620
1621         rcu_read_lock();
1622         mpath = mpp_path_lookup_by_idx(sdata, idx);
1623         if (!mpath) {
1624                 rcu_read_unlock();
1625                 return -ENOENT;
1626         }
1627         memcpy(dst, mpath->dst, ETH_ALEN);
1628         mpp_set_pinfo(mpath, mpp, pinfo);
1629         rcu_read_unlock();
1630         return 0;
1631 }
1632
1633 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1634                                 struct net_device *dev,
1635                                 struct mesh_config *conf)
1636 {
1637         struct ieee80211_sub_if_data *sdata;
1638         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1639
1640         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1641         return 0;
1642 }
1643
1644 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1645 {
1646         return (mask >> (parm-1)) & 0x1;
1647 }
1648
1649 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1650                 const struct mesh_setup *setup)
1651 {
1652         u8 *new_ie;
1653         const u8 *old_ie;
1654         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1655                                         struct ieee80211_sub_if_data, u.mesh);
1656
1657         /* allocate information elements */
1658         new_ie = NULL;
1659         old_ie = ifmsh->ie;
1660
1661         if (setup->ie_len) {
1662                 new_ie = kmemdup(setup->ie, setup->ie_len,
1663                                 GFP_KERNEL);
1664                 if (!new_ie)
1665                         return -ENOMEM;
1666         }
1667         ifmsh->ie_len = setup->ie_len;
1668         ifmsh->ie = new_ie;
1669         kfree(old_ie);
1670
1671         /* now copy the rest of the setup parameters */
1672         ifmsh->mesh_id_len = setup->mesh_id_len;
1673         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1674         ifmsh->mesh_sp_id = setup->sync_method;
1675         ifmsh->mesh_pp_id = setup->path_sel_proto;
1676         ifmsh->mesh_pm_id = setup->path_metric;
1677         ifmsh->user_mpm = setup->user_mpm;
1678         ifmsh->mesh_auth_id = setup->auth_id;
1679         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1680         if (setup->is_authenticated)
1681                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1682         if (setup->is_secure)
1683                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1684
1685         /* mcast rate setting in Mesh Node */
1686         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1687                                                 sizeof(setup->mcast_rate));
1688         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1689
1690         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1691         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1692
1693         return 0;
1694 }
1695
1696 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1697                                         struct net_device *dev, u32 mask,
1698                                         const struct mesh_config *nconf)
1699 {
1700         struct mesh_config *conf;
1701         struct ieee80211_sub_if_data *sdata;
1702         struct ieee80211_if_mesh *ifmsh;
1703
1704         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1705         ifmsh = &sdata->u.mesh;
1706
1707         /* Set the config options which we are interested in setting */
1708         conf = &(sdata->u.mesh.mshcfg);
1709         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1710                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1711         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1712                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1713         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1714                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1715         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1716                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1717         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1718                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1719         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1720                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1721         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1722                 conf->element_ttl = nconf->element_ttl;
1723         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1724                 if (ifmsh->user_mpm)
1725                         return -EBUSY;
1726                 conf->auto_open_plinks = nconf->auto_open_plinks;
1727         }
1728         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1729                 conf->dot11MeshNbrOffsetMaxNeighbor =
1730                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1731         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1732                 conf->dot11MeshHWMPmaxPREQretries =
1733                         nconf->dot11MeshHWMPmaxPREQretries;
1734         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1735                 conf->path_refresh_time = nconf->path_refresh_time;
1736         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1737                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1738         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1739                 conf->dot11MeshHWMPactivePathTimeout =
1740                         nconf->dot11MeshHWMPactivePathTimeout;
1741         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1742                 conf->dot11MeshHWMPpreqMinInterval =
1743                         nconf->dot11MeshHWMPpreqMinInterval;
1744         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1745                 conf->dot11MeshHWMPperrMinInterval =
1746                         nconf->dot11MeshHWMPperrMinInterval;
1747         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1748                            mask))
1749                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1750                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1751         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1752                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1753                 ieee80211_mesh_root_setup(ifmsh);
1754         }
1755         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1756                 /* our current gate announcement implementation rides on root
1757                  * announcements, so require this ifmsh to also be a root node
1758                  * */
1759                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1760                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1761                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1762                         ieee80211_mesh_root_setup(ifmsh);
1763                 }
1764                 conf->dot11MeshGateAnnouncementProtocol =
1765                         nconf->dot11MeshGateAnnouncementProtocol;
1766         }
1767         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1768                 conf->dot11MeshHWMPRannInterval =
1769                         nconf->dot11MeshHWMPRannInterval;
1770         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1771                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1772         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1773                 /* our RSSI threshold implementation is supported only for
1774                  * devices that report signal in dBm.
1775                  */
1776                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1777                         return -ENOTSUPP;
1778                 conf->rssi_threshold = nconf->rssi_threshold;
1779         }
1780         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1781                 conf->ht_opmode = nconf->ht_opmode;
1782                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1783                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1784         }
1785         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1786                 conf->dot11MeshHWMPactivePathToRootTimeout =
1787                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1788         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1789                 conf->dot11MeshHWMProotInterval =
1790                         nconf->dot11MeshHWMProotInterval;
1791         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1792                 conf->dot11MeshHWMPconfirmationInterval =
1793                         nconf->dot11MeshHWMPconfirmationInterval;
1794         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1795                 conf->power_mode = nconf->power_mode;
1796                 ieee80211_mps_local_status_update(sdata);
1797         }
1798         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1799                 conf->dot11MeshAwakeWindowDuration =
1800                         nconf->dot11MeshAwakeWindowDuration;
1801         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1802                 conf->plink_timeout = nconf->plink_timeout;
1803         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1804         return 0;
1805 }
1806
1807 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1808                                const struct mesh_config *conf,
1809                                const struct mesh_setup *setup)
1810 {
1811         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1812         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1813         int err;
1814
1815         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1816         err = copy_mesh_setup(ifmsh, setup);
1817         if (err)
1818                 return err;
1819
1820         /* can mesh use other SMPS modes? */
1821         sdata->smps_mode = IEEE80211_SMPS_OFF;
1822         sdata->needed_rx_chains = sdata->local->rx_chains;
1823
1824         mutex_lock(&sdata->local->mtx);
1825         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1826                                         IEEE80211_CHANCTX_SHARED);
1827         mutex_unlock(&sdata->local->mtx);
1828         if (err)
1829                 return err;
1830
1831         return ieee80211_start_mesh(sdata);
1832 }
1833
1834 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1835 {
1836         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1837
1838         ieee80211_stop_mesh(sdata);
1839         mutex_lock(&sdata->local->mtx);
1840         ieee80211_vif_release_channel(sdata);
1841         mutex_unlock(&sdata->local->mtx);
1842
1843         return 0;
1844 }
1845 #endif
1846
1847 static int ieee80211_change_bss(struct wiphy *wiphy,
1848                                 struct net_device *dev,
1849                                 struct bss_parameters *params)
1850 {
1851         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1852         enum ieee80211_band band;
1853         u32 changed = 0;
1854
1855         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1856                 return -ENOENT;
1857
1858         band = ieee80211_get_sdata_band(sdata);
1859
1860         if (params->use_cts_prot >= 0) {
1861                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1862                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1863         }
1864         if (params->use_short_preamble >= 0) {
1865                 sdata->vif.bss_conf.use_short_preamble =
1866                         params->use_short_preamble;
1867                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1868         }
1869
1870         if (!sdata->vif.bss_conf.use_short_slot &&
1871             band == IEEE80211_BAND_5GHZ) {
1872                 sdata->vif.bss_conf.use_short_slot = true;
1873                 changed |= BSS_CHANGED_ERP_SLOT;
1874         }
1875
1876         if (params->use_short_slot_time >= 0) {
1877                 sdata->vif.bss_conf.use_short_slot =
1878                         params->use_short_slot_time;
1879                 changed |= BSS_CHANGED_ERP_SLOT;
1880         }
1881
1882         if (params->basic_rates) {
1883                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1884                                          wiphy->bands[band],
1885                                          params->basic_rates,
1886                                          params->basic_rates_len,
1887                                          &sdata->vif.bss_conf.basic_rates);
1888                 changed |= BSS_CHANGED_BASIC_RATES;
1889         }
1890
1891         if (params->ap_isolate >= 0) {
1892                 if (params->ap_isolate)
1893                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1894                 else
1895                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1896         }
1897
1898         if (params->ht_opmode >= 0) {
1899                 sdata->vif.bss_conf.ht_operation_mode =
1900                         (u16) params->ht_opmode;
1901                 changed |= BSS_CHANGED_HT;
1902         }
1903
1904         if (params->p2p_ctwindow >= 0) {
1905                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1906                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1907                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1908                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1909                 changed |= BSS_CHANGED_P2P_PS;
1910         }
1911
1912         if (params->p2p_opp_ps > 0) {
1913                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1914                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1915                 changed |= BSS_CHANGED_P2P_PS;
1916         } else if (params->p2p_opp_ps == 0) {
1917                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1918                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1919                 changed |= BSS_CHANGED_P2P_PS;
1920         }
1921
1922         ieee80211_bss_info_change_notify(sdata, changed);
1923
1924         return 0;
1925 }
1926
1927 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1928                                     struct net_device *dev,
1929                                     struct ieee80211_txq_params *params)
1930 {
1931         struct ieee80211_local *local = wiphy_priv(wiphy);
1932         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1933         struct ieee80211_tx_queue_params p;
1934
1935         if (!local->ops->conf_tx)
1936                 return -EOPNOTSUPP;
1937
1938         if (local->hw.queues < IEEE80211_NUM_ACS)
1939                 return -EOPNOTSUPP;
1940
1941         memset(&p, 0, sizeof(p));
1942         p.aifs = params->aifs;
1943         p.cw_max = params->cwmax;
1944         p.cw_min = params->cwmin;
1945         p.txop = params->txop;
1946
1947         /*
1948          * Setting tx queue params disables u-apsd because it's only
1949          * called in master mode.
1950          */
1951         p.uapsd = false;
1952
1953         sdata->tx_conf[params->ac] = p;
1954         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1955                 wiphy_debug(local->hw.wiphy,
1956                             "failed to set TX queue parameters for AC %d\n",
1957                             params->ac);
1958                 return -EINVAL;
1959         }
1960
1961         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1962
1963         return 0;
1964 }
1965
1966 #ifdef CONFIG_PM
1967 static int ieee80211_suspend(struct wiphy *wiphy,
1968                              struct cfg80211_wowlan *wowlan)
1969 {
1970         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1971 }
1972
1973 static int ieee80211_resume(struct wiphy *wiphy)
1974 {
1975         return __ieee80211_resume(wiphy_priv(wiphy));
1976 }
1977 #else
1978 #define ieee80211_suspend NULL
1979 #define ieee80211_resume NULL
1980 #endif
1981
1982 static int ieee80211_scan(struct wiphy *wiphy,
1983                           struct cfg80211_scan_request *req)
1984 {
1985         struct ieee80211_sub_if_data *sdata;
1986
1987         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1988
1989         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1990         case NL80211_IFTYPE_STATION:
1991         case NL80211_IFTYPE_ADHOC:
1992         case NL80211_IFTYPE_MESH_POINT:
1993         case NL80211_IFTYPE_P2P_CLIENT:
1994         case NL80211_IFTYPE_P2P_DEVICE:
1995                 break;
1996         case NL80211_IFTYPE_P2P_GO:
1997                 if (sdata->local->ops->hw_scan)
1998                         break;
1999                 /*
2000                  * FIXME: implement NoA while scanning in software,
2001                  * for now fall through to allow scanning only when
2002                  * beaconing hasn't been configured yet
2003                  */
2004         case NL80211_IFTYPE_AP:
2005                 /*
2006                  * If the scan has been forced (and the driver supports
2007                  * forcing), don't care about being beaconing already.
2008                  * This will create problems to the attached stations (e.g. all
2009                  * the  frames sent while scanning on other channel will be
2010                  * lost)
2011                  */
2012                 if (sdata->u.ap.beacon &&
2013                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2014                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2015                         return -EOPNOTSUPP;
2016                 break;
2017         default:
2018                 return -EOPNOTSUPP;
2019         }
2020
2021         return ieee80211_request_scan(sdata, req);
2022 }
2023
2024 static int
2025 ieee80211_sched_scan_start(struct wiphy *wiphy,
2026                            struct net_device *dev,
2027                            struct cfg80211_sched_scan_request *req)
2028 {
2029         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2030
2031         if (!sdata->local->ops->sched_scan_start)
2032                 return -EOPNOTSUPP;
2033
2034         return ieee80211_request_sched_scan_start(sdata, req);
2035 }
2036
2037 static int
2038 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2039 {
2040         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2041
2042         if (!sdata->local->ops->sched_scan_stop)
2043                 return -EOPNOTSUPP;
2044
2045         return ieee80211_request_sched_scan_stop(sdata);
2046 }
2047
2048 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2049                           struct cfg80211_auth_request *req)
2050 {
2051         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2052 }
2053
2054 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2055                            struct cfg80211_assoc_request *req)
2056 {
2057         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2058 }
2059
2060 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2061                             struct cfg80211_deauth_request *req)
2062 {
2063         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2064 }
2065
2066 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2067                               struct cfg80211_disassoc_request *req)
2068 {
2069         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2070 }
2071
2072 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2073                                struct cfg80211_ibss_params *params)
2074 {
2075         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2076 }
2077
2078 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2079 {
2080         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2081 }
2082
2083 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2084                               struct ocb_setup *setup)
2085 {
2086         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2087 }
2088
2089 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2090 {
2091         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2092 }
2093
2094 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2095                                     int rate[IEEE80211_NUM_BANDS])
2096 {
2097         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2098
2099         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2100                sizeof(int) * IEEE80211_NUM_BANDS);
2101
2102         return 0;
2103 }
2104
2105 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2106 {
2107         struct ieee80211_local *local = wiphy_priv(wiphy);
2108         int err;
2109
2110         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2111                 ieee80211_check_fast_xmit_all(local);
2112
2113                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2114
2115                 if (err) {
2116                         ieee80211_check_fast_xmit_all(local);
2117                         return err;
2118                 }
2119         }
2120
2121         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2122             (changed & WIPHY_PARAM_DYN_ACK)) {
2123                 s16 coverage_class;
2124
2125                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2126                                         wiphy->coverage_class : -1;
2127                 err = drv_set_coverage_class(local, coverage_class);
2128
2129                 if (err)
2130                         return err;
2131         }
2132
2133         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2134                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2135
2136                 if (err)
2137                         return err;
2138         }
2139
2140         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2141                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2142                         return -EINVAL;
2143                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2144         }
2145         if (changed & WIPHY_PARAM_RETRY_LONG) {
2146                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2147                         return -EINVAL;
2148                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2149         }
2150         if (changed &
2151             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2152                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2153
2154         return 0;
2155 }
2156
2157 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2158                                   struct wireless_dev *wdev,
2159                                   enum nl80211_tx_power_setting type, int mbm)
2160 {
2161         struct ieee80211_local *local = wiphy_priv(wiphy);
2162         struct ieee80211_sub_if_data *sdata;
2163         enum nl80211_tx_power_setting txp_type = type;
2164         bool update_txp_type = false;
2165
2166         if (wdev) {
2167                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2168
2169                 switch (type) {
2170                 case NL80211_TX_POWER_AUTOMATIC:
2171                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2172                         txp_type = NL80211_TX_POWER_LIMITED;
2173                         break;
2174                 case NL80211_TX_POWER_LIMITED:
2175                 case NL80211_TX_POWER_FIXED:
2176                         if (mbm < 0 || (mbm % 100))
2177                                 return -EOPNOTSUPP;
2178                         sdata->user_power_level = MBM_TO_DBM(mbm);
2179                         break;
2180                 }
2181
2182                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2183                         update_txp_type = true;
2184                         sdata->vif.bss_conf.txpower_type = txp_type;
2185                 }
2186
2187                 ieee80211_recalc_txpower(sdata, update_txp_type);
2188
2189                 return 0;
2190         }
2191
2192         switch (type) {
2193         case NL80211_TX_POWER_AUTOMATIC:
2194                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2195                 txp_type = NL80211_TX_POWER_LIMITED;
2196                 break;
2197         case NL80211_TX_POWER_LIMITED:
2198         case NL80211_TX_POWER_FIXED:
2199                 if (mbm < 0 || (mbm % 100))
2200                         return -EOPNOTSUPP;
2201                 local->user_power_level = MBM_TO_DBM(mbm);
2202                 break;
2203         }
2204
2205         mutex_lock(&local->iflist_mtx);
2206         list_for_each_entry(sdata, &local->interfaces, list) {
2207                 sdata->user_power_level = local->user_power_level;
2208                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2209                         update_txp_type = true;
2210                 sdata->vif.bss_conf.txpower_type = txp_type;
2211         }
2212         list_for_each_entry(sdata, &local->interfaces, list)
2213                 ieee80211_recalc_txpower(sdata, update_txp_type);
2214         mutex_unlock(&local->iflist_mtx);
2215
2216         return 0;
2217 }
2218
2219 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2220                                   struct wireless_dev *wdev,
2221                                   int *dbm)
2222 {
2223         struct ieee80211_local *local = wiphy_priv(wiphy);
2224         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2225
2226         if (local->ops->get_txpower)
2227                 return drv_get_txpower(local, sdata, dbm);
2228
2229         if (!local->use_chanctx)
2230                 *dbm = local->hw.conf.power_level;
2231         else
2232                 *dbm = sdata->vif.bss_conf.txpower;
2233
2234         return 0;
2235 }
2236
2237 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2238                                   const u8 *addr)
2239 {
2240         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2241
2242         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2243
2244         return 0;
2245 }
2246
2247 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2248 {
2249         struct ieee80211_local *local = wiphy_priv(wiphy);
2250
2251         drv_rfkill_poll(local);
2252 }
2253
2254 #ifdef CONFIG_NL80211_TESTMODE
2255 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2256                                   struct wireless_dev *wdev,
2257                                   void *data, int len)
2258 {
2259         struct ieee80211_local *local = wiphy_priv(wiphy);
2260         struct ieee80211_vif *vif = NULL;
2261
2262         if (!local->ops->testmode_cmd)
2263                 return -EOPNOTSUPP;
2264
2265         if (wdev) {
2266                 struct ieee80211_sub_if_data *sdata;
2267
2268                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2269                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2270                         vif = &sdata->vif;
2271         }
2272
2273         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2274 }
2275
2276 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2277                                    struct sk_buff *skb,
2278                                    struct netlink_callback *cb,
2279                                    void *data, int len)
2280 {
2281         struct ieee80211_local *local = wiphy_priv(wiphy);
2282
2283         if (!local->ops->testmode_dump)
2284                 return -EOPNOTSUPP;
2285
2286         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2287 }
2288 #endif
2289
2290 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2291                                 enum ieee80211_smps_mode smps_mode)
2292 {
2293         struct sta_info *sta;
2294         enum ieee80211_smps_mode old_req;
2295
2296         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2297                 return -EINVAL;
2298
2299         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2300                 return 0;
2301
2302         old_req = sdata->u.ap.req_smps;
2303         sdata->u.ap.req_smps = smps_mode;
2304
2305         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2306         if (old_req == smps_mode ||
2307             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2308                 return 0;
2309
2310          /* If no associated stations, there's no need to do anything */
2311         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2312                 sdata->smps_mode = smps_mode;
2313                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2314                 return 0;
2315         }
2316
2317         ht_dbg(sdata,
2318                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2319                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2320
2321         mutex_lock(&sdata->local->sta_mtx);
2322         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2323                 /*
2324                  * Only stations associated to our AP and
2325                  * associated VLANs
2326                  */
2327                 if (sta->sdata->bss != &sdata->u.ap)
2328                         continue;
2329
2330                 /* This station doesn't support MIMO - skip it */
2331                 if (sta_info_tx_streams(sta) == 1)
2332                         continue;
2333
2334                 /*
2335                  * Don't wake up a STA just to send the action frame
2336                  * unless we are getting more restrictive.
2337                  */
2338                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2339                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2340                                                    smps_mode)) {
2341                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2342                                sta->sta.addr);
2343                         continue;
2344                 }
2345
2346                 /*
2347                  * If the STA is not authorized, wait until it gets
2348                  * authorized and the action frame will be sent then.
2349                  */
2350                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2351                         continue;
2352
2353                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2354                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2355                                            sdata->vif.bss_conf.bssid);
2356         }
2357         mutex_unlock(&sdata->local->sta_mtx);
2358
2359         sdata->smps_mode = smps_mode;
2360         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2361
2362         return 0;
2363 }
2364
2365 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2366                                  enum ieee80211_smps_mode smps_mode)
2367 {
2368         const u8 *ap;
2369         enum ieee80211_smps_mode old_req;
2370         int err;
2371         struct sta_info *sta;
2372         bool tdls_peer_found = false;
2373
2374         lockdep_assert_held(&sdata->wdev.mtx);
2375
2376         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2377                 return -EINVAL;
2378
2379         old_req = sdata->u.mgd.req_smps;
2380         sdata->u.mgd.req_smps = smps_mode;
2381
2382         if (old_req == smps_mode &&
2383             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2384                 return 0;
2385
2386         /*
2387          * If not associated, or current association is not an HT
2388          * association, there's no need to do anything, just store
2389          * the new value until we associate.
2390          */
2391         if (!sdata->u.mgd.associated ||
2392             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2393                 return 0;
2394
2395         ap = sdata->u.mgd.associated->bssid;
2396
2397         rcu_read_lock();
2398         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2399                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2400                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2401                         continue;
2402
2403                 tdls_peer_found = true;
2404                 break;
2405         }
2406         rcu_read_unlock();
2407
2408         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2409                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2410                         smps_mode = IEEE80211_SMPS_OFF;
2411                 else
2412                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2413         }
2414
2415         /* send SM PS frame to AP */
2416         err = ieee80211_send_smps_action(sdata, smps_mode,
2417                                          ap, ap);
2418         if (err)
2419                 sdata->u.mgd.req_smps = old_req;
2420         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2421                 ieee80211_teardown_tdls_peers(sdata);
2422
2423         return err;
2424 }
2425
2426 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2427                                     bool enabled, int timeout)
2428 {
2429         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2430         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2431
2432         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2433                 return -EOPNOTSUPP;
2434
2435         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2436                 return -EOPNOTSUPP;
2437
2438         if (enabled == sdata->u.mgd.powersave &&
2439             timeout == local->dynamic_ps_forced_timeout)
2440                 return 0;
2441
2442         sdata->u.mgd.powersave = enabled;
2443         local->dynamic_ps_forced_timeout = timeout;
2444
2445         /* no change, but if automatic follow powersave */
2446         sdata_lock(sdata);
2447         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2448         sdata_unlock(sdata);
2449
2450         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2451                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2452
2453         ieee80211_recalc_ps(local, -1);
2454         ieee80211_recalc_ps_vif(sdata);
2455
2456         return 0;
2457 }
2458
2459 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2460                                          struct net_device *dev,
2461                                          s32 rssi_thold, u32 rssi_hyst)
2462 {
2463         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2464         struct ieee80211_vif *vif = &sdata->vif;
2465         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2466
2467         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2468             rssi_hyst == bss_conf->cqm_rssi_hyst)
2469                 return 0;
2470
2471         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2472             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2473                 return -EOPNOTSUPP;
2474
2475         bss_conf->cqm_rssi_thold = rssi_thold;
2476         bss_conf->cqm_rssi_hyst = rssi_hyst;
2477
2478         /* tell the driver upon association, unless already associated */
2479         if (sdata->u.mgd.associated &&
2480             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2481                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2482
2483         return 0;
2484 }
2485
2486 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2487                                       struct net_device *dev,
2488                                       const u8 *addr,
2489                                       const struct cfg80211_bitrate_mask *mask)
2490 {
2491         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2492         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2493         int i, ret;
2494
2495         if (!ieee80211_sdata_running(sdata))
2496                 return -ENETDOWN;
2497
2498         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2499                 ret = drv_set_bitrate_mask(local, sdata, mask);
2500                 if (ret)
2501                         return ret;
2502         }
2503
2504         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2505                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2506                 int j;
2507
2508                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2509                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2510                        sizeof(mask->control[i].ht_mcs));
2511                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2512                        mask->control[i].vht_mcs,
2513                        sizeof(mask->control[i].vht_mcs));
2514
2515                 sdata->rc_has_mcs_mask[i] = false;
2516                 sdata->rc_has_vht_mcs_mask[i] = false;
2517                 if (!sband)
2518                         continue;
2519
2520                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2521                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2522                                 sdata->rc_has_mcs_mask[i] = true;
2523                                 break;
2524                         }
2525                 }
2526
2527                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2528                         if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2529                                 sdata->rc_has_vht_mcs_mask[i] = true;
2530                                 break;
2531                         }
2532                 }
2533         }
2534
2535         return 0;
2536 }
2537
2538 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2539                                            struct ieee80211_roc_work *new_roc,
2540                                            struct ieee80211_roc_work *cur_roc)
2541 {
2542         unsigned long now = jiffies;
2543         unsigned long remaining = cur_roc->hw_start_time +
2544                                   msecs_to_jiffies(cur_roc->duration) -
2545                                   now;
2546
2547         if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2548                 return false;
2549
2550         /* if it doesn't fit entirely, schedule a new one */
2551         if (new_roc->duration > jiffies_to_msecs(remaining))
2552                 return false;
2553
2554         ieee80211_handle_roc_started(new_roc);
2555
2556         /* add to dependents so we send the expired event properly */
2557         list_add_tail(&new_roc->list, &cur_roc->dependents);
2558         return true;
2559 }
2560
2561 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
2562 {
2563         lockdep_assert_held(&local->mtx);
2564
2565         local->roc_cookie_counter++;
2566
2567         /* wow, you wrapped 64 bits ... more likely a bug */
2568         if (WARN_ON(local->roc_cookie_counter == 0))
2569                 local->roc_cookie_counter++;
2570
2571         return local->roc_cookie_counter;
2572 }
2573
2574 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2575                                     struct ieee80211_sub_if_data *sdata,
2576                                     struct ieee80211_channel *channel,
2577                                     unsigned int duration, u64 *cookie,
2578                                     struct sk_buff *txskb,
2579                                     enum ieee80211_roc_type type)
2580 {
2581         struct ieee80211_roc_work *roc, *tmp;
2582         bool queued = false;
2583         int ret;
2584
2585         lockdep_assert_held(&local->mtx);
2586
2587         if (local->use_chanctx && !local->ops->remain_on_channel)
2588                 return -EOPNOTSUPP;
2589
2590         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2591         if (!roc)
2592                 return -ENOMEM;
2593
2594         /*
2595          * If the duration is zero, then the driver
2596          * wouldn't actually do anything. Set it to
2597          * 10 for now.
2598          *
2599          * TODO: cancel the off-channel operation
2600          *       when we get the SKB's TX status and
2601          *       the wait time was zero before.
2602          */
2603         if (!duration)
2604                 duration = 10;
2605
2606         roc->chan = channel;
2607         roc->duration = duration;
2608         roc->req_duration = duration;
2609         roc->frame = txskb;
2610         roc->type = type;
2611         roc->sdata = sdata;
2612         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2613         INIT_LIST_HEAD(&roc->dependents);
2614
2615         /*
2616          * cookie is either the roc cookie (for normal roc)
2617          * or the SKB (for mgmt TX)
2618          */
2619         if (!txskb) {
2620                 roc->cookie = ieee80211_mgmt_tx_cookie(local);
2621                 *cookie = roc->cookie;
2622         } else {
2623                 roc->mgmt_tx_cookie = *cookie;
2624         }
2625
2626         /* if there's one pending or we're scanning, queue this one */
2627         if (!list_empty(&local->roc_list) ||
2628             local->scanning || ieee80211_is_radar_required(local))
2629                 goto out_check_combine;
2630
2631         /* if not HW assist, just queue & schedule work */
2632         if (!local->ops->remain_on_channel) {
2633                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2634                 goto out_queue;
2635         }
2636
2637         /* otherwise actually kick it off here (for error handling) */
2638
2639         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2640         if (ret) {
2641                 kfree(roc);
2642                 return ret;
2643         }
2644
2645         roc->started = true;
2646         goto out_queue;
2647
2648  out_check_combine:
2649         list_for_each_entry(tmp, &local->roc_list, list) {
2650                 if (tmp->chan != channel || tmp->sdata != sdata)
2651                         continue;
2652
2653                 /*
2654                  * Extend this ROC if possible:
2655                  *
2656                  * If it hasn't started yet, just increase the duration
2657                  * and add the new one to the list of dependents.
2658                  * If the type of the new ROC has higher priority, modify the
2659                  * type of the previous one to match that of the new one.
2660                  */
2661                 if (!tmp->started) {
2662                         list_add_tail(&roc->list, &tmp->dependents);
2663                         tmp->duration = max(tmp->duration, roc->duration);
2664                         tmp->type = max(tmp->type, roc->type);
2665                         queued = true;
2666                         break;
2667                 }
2668
2669                 /* If it has already started, it's more difficult ... */
2670                 if (local->ops->remain_on_channel) {
2671                         /*
2672                          * In the offloaded ROC case, if it hasn't begun, add
2673                          * this new one to the dependent list to be handled
2674                          * when the master one begins. If it has begun,
2675                          * check if it fits entirely within the existing one,
2676                          * in which case it will just be dependent as well.
2677                          * Otherwise, schedule it by itself.
2678                          */
2679                         if (!tmp->hw_begun) {
2680                                 list_add_tail(&roc->list, &tmp->dependents);
2681                                 queued = true;
2682                                 break;
2683                         }
2684
2685                         if (ieee80211_coalesce_started_roc(local, roc, tmp))
2686                                 queued = true;
2687                 } else if (del_timer_sync(&tmp->work.timer)) {
2688                         unsigned long new_end;
2689
2690                         /*
2691                          * In the software ROC case, cancel the timer, if
2692                          * that fails then the finish work is already
2693                          * queued/pending and thus we queue the new ROC
2694                          * normally, if that succeeds then we can extend
2695                          * the timer duration and TX the frame (if any.)
2696                          */
2697
2698                         list_add_tail(&roc->list, &tmp->dependents);
2699                         queued = true;
2700
2701                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2702
2703                         /* ok, it was started & we canceled timer */
2704                         if (time_after(new_end, tmp->work.timer.expires))
2705                                 mod_timer(&tmp->work.timer, new_end);
2706                         else
2707                                 add_timer(&tmp->work.timer);
2708
2709                         ieee80211_handle_roc_started(roc);
2710                 }
2711                 break;
2712         }
2713
2714  out_queue:
2715         if (!queued)
2716                 list_add_tail(&roc->list, &local->roc_list);
2717
2718         return 0;
2719 }
2720
2721 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2722                                        struct wireless_dev *wdev,
2723                                        struct ieee80211_channel *chan,
2724                                        unsigned int duration,
2725                                        u64 *cookie)
2726 {
2727         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2728         struct ieee80211_local *local = sdata->local;
2729         int ret;
2730
2731         mutex_lock(&local->mtx);
2732         ret = ieee80211_start_roc_work(local, sdata, chan,
2733                                        duration, cookie, NULL,
2734                                        IEEE80211_ROC_TYPE_NORMAL);
2735         mutex_unlock(&local->mtx);
2736
2737         return ret;
2738 }
2739
2740 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2741                                 u64 cookie, bool mgmt_tx)
2742 {
2743         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2744         int ret;
2745
2746         mutex_lock(&local->mtx);
2747         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2748                 struct ieee80211_roc_work *dep, *tmp2;
2749
2750                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2751                         if (!mgmt_tx && dep->cookie != cookie)
2752                                 continue;
2753                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2754                                 continue;
2755                         /* found dependent item -- just remove it */
2756                         list_del(&dep->list);
2757                         mutex_unlock(&local->mtx);
2758
2759                         ieee80211_roc_notify_destroy(dep, true);
2760                         return 0;
2761                 }
2762
2763                 if (!mgmt_tx && roc->cookie != cookie)
2764                         continue;
2765                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2766                         continue;
2767
2768                 found = roc;
2769                 break;
2770         }
2771
2772         if (!found) {
2773                 mutex_unlock(&local->mtx);
2774                 return -ENOENT;
2775         }
2776
2777         /*
2778          * We found the item to cancel, so do that. Note that it
2779          * may have dependents, which we also cancel (and send
2780          * the expired signal for.) Not doing so would be quite
2781          * tricky here, but we may need to fix it later.
2782          */
2783
2784         if (local->ops->remain_on_channel) {
2785                 if (found->started) {
2786                         ret = drv_cancel_remain_on_channel(local);
2787                         if (WARN_ON_ONCE(ret)) {
2788                                 mutex_unlock(&local->mtx);
2789                                 return ret;
2790                         }
2791                 }
2792
2793                 list_del(&found->list);
2794
2795                 if (found->started)
2796                         ieee80211_start_next_roc(local);
2797                 mutex_unlock(&local->mtx);
2798
2799                 ieee80211_roc_notify_destroy(found, true);
2800         } else {
2801                 /* work may be pending so use it all the time */
2802                 found->abort = true;
2803                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2804
2805                 mutex_unlock(&local->mtx);
2806
2807                 /* work will clean up etc */
2808                 flush_delayed_work(&found->work);
2809                 WARN_ON(!found->to_be_freed);
2810                 kfree(found);
2811         }
2812
2813         return 0;
2814 }
2815
2816 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2817                                               struct wireless_dev *wdev,
2818                                               u64 cookie)
2819 {
2820         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2821         struct ieee80211_local *local = sdata->local;
2822
2823         return ieee80211_cancel_roc(local, cookie, false);
2824 }
2825
2826 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2827                                            struct net_device *dev,
2828                                            struct cfg80211_chan_def *chandef,
2829                                            u32 cac_time_ms)
2830 {
2831         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2832         struct ieee80211_local *local = sdata->local;
2833         int err;
2834
2835         mutex_lock(&local->mtx);
2836         if (!list_empty(&local->roc_list) || local->scanning) {
2837                 err = -EBUSY;
2838                 goto out_unlock;
2839         }
2840
2841         /* whatever, but channel contexts should not complain about that one */
2842         sdata->smps_mode = IEEE80211_SMPS_OFF;
2843         sdata->needed_rx_chains = local->rx_chains;
2844
2845         err = ieee80211_vif_use_channel(sdata, chandef,
2846                                         IEEE80211_CHANCTX_SHARED);
2847         if (err)
2848                 goto out_unlock;
2849
2850         ieee80211_queue_delayed_work(&sdata->local->hw,
2851                                      &sdata->dfs_cac_timer_work,
2852                                      msecs_to_jiffies(cac_time_ms));
2853
2854  out_unlock:
2855         mutex_unlock(&local->mtx);
2856         return err;
2857 }
2858
2859 static struct cfg80211_beacon_data *
2860 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2861 {
2862         struct cfg80211_beacon_data *new_beacon;
2863         u8 *pos;
2864         int len;
2865
2866         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2867               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2868               beacon->probe_resp_len;
2869
2870         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2871         if (!new_beacon)
2872                 return NULL;
2873
2874         pos = (u8 *)(new_beacon + 1);
2875         if (beacon->head_len) {
2876                 new_beacon->head_len = beacon->head_len;
2877                 new_beacon->head = pos;
2878                 memcpy(pos, beacon->head, beacon->head_len);
2879                 pos += beacon->head_len;
2880         }
2881         if (beacon->tail_len) {
2882                 new_beacon->tail_len = beacon->tail_len;
2883                 new_beacon->tail = pos;
2884                 memcpy(pos, beacon->tail, beacon->tail_len);
2885                 pos += beacon->tail_len;
2886         }
2887         if (beacon->beacon_ies_len) {
2888                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2889                 new_beacon->beacon_ies = pos;
2890                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2891                 pos += beacon->beacon_ies_len;
2892         }
2893         if (beacon->proberesp_ies_len) {
2894                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2895                 new_beacon->proberesp_ies = pos;
2896                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2897                 pos += beacon->proberesp_ies_len;
2898         }
2899         if (beacon->assocresp_ies_len) {
2900                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2901                 new_beacon->assocresp_ies = pos;
2902                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2903                 pos += beacon->assocresp_ies_len;
2904         }
2905         if (beacon->probe_resp_len) {
2906                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2907                 beacon->probe_resp = pos;
2908                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2909                 pos += beacon->probe_resp_len;
2910         }
2911
2912         return new_beacon;
2913 }
2914
2915 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2916 {
2917         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2918
2919         ieee80211_queue_work(&sdata->local->hw,
2920                              &sdata->csa_finalize_work);
2921 }
2922 EXPORT_SYMBOL(ieee80211_csa_finish);
2923
2924 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2925                                           u32 *changed)
2926 {
2927         int err;
2928
2929         switch (sdata->vif.type) {
2930         case NL80211_IFTYPE_AP:
2931                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2932                                               NULL);
2933                 kfree(sdata->u.ap.next_beacon);
2934                 sdata->u.ap.next_beacon = NULL;
2935
2936                 if (err < 0)
2937                         return err;
2938                 *changed |= err;
2939                 break;
2940         case NL80211_IFTYPE_ADHOC:
2941                 err = ieee80211_ibss_finish_csa(sdata);
2942                 if (err < 0)
2943                         return err;
2944                 *changed |= err;
2945                 break;
2946 #ifdef CONFIG_MAC80211_MESH
2947         case NL80211_IFTYPE_MESH_POINT:
2948                 err = ieee80211_mesh_finish_csa(sdata);
2949                 if (err < 0)
2950                         return err;
2951                 *changed |= err;
2952                 break;
2953 #endif
2954         default:
2955                 WARN_ON(1);
2956                 return -EINVAL;
2957         }
2958
2959         return 0;
2960 }
2961
2962 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2963 {
2964         struct ieee80211_local *local = sdata->local;
2965         u32 changed = 0;
2966         int err;
2967
2968         sdata_assert_lock(sdata);
2969         lockdep_assert_held(&local->mtx);
2970         lockdep_assert_held(&local->chanctx_mtx);
2971
2972         /*
2973          * using reservation isn't immediate as it may be deferred until later
2974          * with multi-vif. once reservation is complete it will re-schedule the
2975          * work with no reserved_chanctx so verify chandef to check if it
2976          * completed successfully
2977          */
2978
2979         if (sdata->reserved_chanctx) {
2980                 /*
2981                  * with multi-vif csa driver may call ieee80211_csa_finish()
2982                  * many times while waiting for other interfaces to use their
2983                  * reservations
2984                  */
2985                 if (sdata->reserved_ready)
2986                         return 0;
2987
2988                 return ieee80211_vif_use_reserved_context(sdata);
2989         }
2990
2991         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2992                                         &sdata->csa_chandef))
2993                 return -EINVAL;
2994
2995         sdata->vif.csa_active = false;
2996
2997         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2998         if (err)
2999                 return err;
3000
3001         ieee80211_bss_info_change_notify(sdata, changed);
3002
3003         if (sdata->csa_block_tx) {
3004                 ieee80211_wake_vif_queues(local, sdata,
3005                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3006                 sdata->csa_block_tx = false;
3007         }
3008
3009         err = drv_post_channel_switch(sdata);
3010         if (err)
3011                 return err;
3012
3013         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3014
3015         return 0;
3016 }
3017
3018 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3019 {
3020         if (__ieee80211_csa_finalize(sdata)) {
3021                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3022                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3023                                     GFP_KERNEL);
3024         }
3025 }
3026
3027 void ieee80211_csa_finalize_work(struct work_struct *work)
3028 {
3029         struct ieee80211_sub_if_data *sdata =
3030                 container_of(work, struct ieee80211_sub_if_data,
3031                              csa_finalize_work);
3032         struct ieee80211_local *local = sdata->local;
3033
3034         sdata_lock(sdata);
3035         mutex_lock(&local->mtx);
3036         mutex_lock(&local->chanctx_mtx);
3037
3038         /* AP might have been stopped while waiting for the lock. */
3039         if (!sdata->vif.csa_active)
3040                 goto unlock;
3041
3042         if (!ieee80211_sdata_running(sdata))
3043                 goto unlock;
3044
3045         ieee80211_csa_finalize(sdata);
3046
3047 unlock:
3048         mutex_unlock(&local->chanctx_mtx);
3049         mutex_unlock(&local->mtx);
3050         sdata_unlock(sdata);
3051 }
3052
3053 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3054                                     struct cfg80211_csa_settings *params,
3055                                     u32 *changed)
3056 {
3057         struct ieee80211_csa_settings csa = {};
3058         int err;
3059
3060         switch (sdata->vif.type) {
3061         case NL80211_IFTYPE_AP:
3062                 sdata->u.ap.next_beacon =
3063                         cfg80211_beacon_dup(&params->beacon_after);
3064                 if (!sdata->u.ap.next_beacon)
3065                         return -ENOMEM;
3066
3067                 /*
3068                  * With a count of 0, we don't have to wait for any
3069                  * TBTT before switching, so complete the CSA
3070                  * immediately.  In theory, with a count == 1 we
3071                  * should delay the switch until just before the next
3072                  * TBTT, but that would complicate things so we switch
3073                  * immediately too.  If we would delay the switch
3074                  * until the next TBTT, we would have to set the probe
3075                  * response here.
3076                  *
3077                  * TODO: A channel switch with count <= 1 without
3078                  * sending a CSA action frame is kind of useless,
3079                  * because the clients won't know we're changing
3080                  * channels.  The action frame must be implemented
3081                  * either here or in the userspace.
3082                  */
3083                 if (params->count <= 1)
3084                         break;
3085
3086                 if ((params->n_counter_offsets_beacon >
3087                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3088                     (params->n_counter_offsets_presp >
3089                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3090                         return -EINVAL;
3091
3092                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3093                 csa.counter_offsets_presp = params->counter_offsets_presp;
3094                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3095                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3096                 csa.count = params->count;
3097
3098                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3099                 if (err < 0) {
3100                         kfree(sdata->u.ap.next_beacon);
3101                         return err;
3102                 }
3103                 *changed |= err;
3104
3105                 break;
3106         case NL80211_IFTYPE_ADHOC:
3107                 if (!sdata->vif.bss_conf.ibss_joined)
3108                         return -EINVAL;
3109
3110                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3111                         return -EINVAL;
3112
3113                 switch (params->chandef.width) {
3114                 case NL80211_CHAN_WIDTH_40:
3115                         if (cfg80211_get_chandef_type(&params->chandef) !=
3116                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3117                                 return -EINVAL;
3118                 case NL80211_CHAN_WIDTH_5:
3119                 case NL80211_CHAN_WIDTH_10:
3120                 case NL80211_CHAN_WIDTH_20_NOHT:
3121                 case NL80211_CHAN_WIDTH_20:
3122                         break;
3123                 default:
3124                         return -EINVAL;
3125                 }
3126
3127                 /* changes into another band are not supported */
3128                 if (sdata->u.ibss.chandef.chan->band !=
3129                     params->chandef.chan->band)
3130                         return -EINVAL;
3131
3132                 /* see comments in the NL80211_IFTYPE_AP block */
3133                 if (params->count > 1) {
3134                         err = ieee80211_ibss_csa_beacon(sdata, params);
3135                         if (err < 0)
3136                                 return err;
3137                         *changed |= err;
3138                 }
3139
3140                 ieee80211_send_action_csa(sdata, params);
3141
3142                 break;
3143 #ifdef CONFIG_MAC80211_MESH
3144         case NL80211_IFTYPE_MESH_POINT: {
3145                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3146
3147                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3148                         return -EINVAL;
3149
3150                 /* changes into another band are not supported */
3151                 if (sdata->vif.bss_conf.chandef.chan->band !=
3152                     params->chandef.chan->band)
3153                         return -EINVAL;
3154
3155                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3156                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3157                         if (!ifmsh->pre_value)
3158                                 ifmsh->pre_value = 1;
3159                         else
3160                                 ifmsh->pre_value++;
3161                 }
3162
3163                 /* see comments in the NL80211_IFTYPE_AP block */
3164                 if (params->count > 1) {
3165                         err = ieee80211_mesh_csa_beacon(sdata, params);
3166                         if (err < 0) {
3167                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3168                                 return err;
3169                         }
3170                         *changed |= err;
3171                 }
3172
3173                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3174                         ieee80211_send_action_csa(sdata, params);
3175
3176                 break;
3177                 }
3178 #endif
3179         default:
3180                 return -EOPNOTSUPP;
3181         }
3182
3183         return 0;
3184 }
3185
3186 static int
3187 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3188                            struct cfg80211_csa_settings *params)
3189 {
3190         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3191         struct ieee80211_local *local = sdata->local;
3192         struct ieee80211_channel_switch ch_switch;
3193         struct ieee80211_chanctx_conf *conf;
3194         struct ieee80211_chanctx *chanctx;
3195         u32 changed = 0;
3196         int err;
3197
3198         sdata_assert_lock(sdata);
3199         lockdep_assert_held(&local->mtx);
3200
3201         if (!list_empty(&local->roc_list) || local->scanning)
3202                 return -EBUSY;
3203
3204         if (sdata->wdev.cac_started)
3205                 return -EBUSY;
3206
3207         if (cfg80211_chandef_identical(&params->chandef,
3208                                        &sdata->vif.bss_conf.chandef))
3209                 return -EINVAL;
3210
3211         /* don't allow another channel switch if one is already active. */
3212         if (sdata->vif.csa_active)
3213                 return -EBUSY;
3214
3215         mutex_lock(&local->chanctx_mtx);
3216         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3217                                          lockdep_is_held(&local->chanctx_mtx));
3218         if (!conf) {
3219                 err = -EBUSY;
3220                 goto out;
3221         }
3222
3223         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3224         if (!chanctx) {
3225                 err = -EBUSY;
3226                 goto out;
3227         }
3228
3229         ch_switch.timestamp = 0;
3230         ch_switch.device_timestamp = 0;
3231         ch_switch.block_tx = params->block_tx;
3232         ch_switch.chandef = params->chandef;
3233         ch_switch.count = params->count;
3234
3235         err = drv_pre_channel_switch(sdata, &ch_switch);
3236         if (err)
3237                 goto out;
3238
3239         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3240                                             chanctx->mode,
3241                                             params->radar_required);
3242         if (err)
3243                 goto out;
3244
3245         /* if reservation is invalid then this will fail */
3246         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3247         if (err) {
3248                 ieee80211_vif_unreserve_chanctx(sdata);
3249                 goto out;
3250         }
3251
3252         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3253         if (err) {
3254                 ieee80211_vif_unreserve_chanctx(sdata);
3255                 goto out;
3256         }
3257
3258         sdata->csa_chandef = params->chandef;
3259         sdata->csa_block_tx = params->block_tx;
3260         sdata->vif.csa_active = true;
3261
3262         if (sdata->csa_block_tx)
3263                 ieee80211_stop_vif_queues(local, sdata,
3264                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3265
3266         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3267                                           params->count);
3268
3269         if (changed) {
3270                 ieee80211_bss_info_change_notify(sdata, changed);
3271                 drv_channel_switch_beacon(sdata, &params->chandef);
3272         } else {
3273                 /* if the beacon didn't change, we can finalize immediately */
3274                 ieee80211_csa_finalize(sdata);
3275         }
3276
3277 out:
3278         mutex_unlock(&local->chanctx_mtx);
3279         return err;
3280 }
3281
3282 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3283                              struct cfg80211_csa_settings *params)
3284 {
3285         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3286         struct ieee80211_local *local = sdata->local;
3287         int err;
3288
3289         mutex_lock(&local->mtx);
3290         err = __ieee80211_channel_switch(wiphy, dev, params);
3291         mutex_unlock(&local->mtx);
3292
3293         return err;
3294 }
3295
3296 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
3297                                               struct sk_buff *skb, u64 *cookie,
3298                                               gfp_t gfp)
3299 {
3300         unsigned long spin_flags;
3301         struct sk_buff *ack_skb;
3302         int id;
3303
3304         ack_skb = skb_copy(skb, gfp);
3305         if (!ack_skb)
3306                 return ERR_PTR(-ENOMEM);
3307
3308         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3309         id = idr_alloc(&local->ack_status_frames, ack_skb,
3310                        1, 0x10000, GFP_ATOMIC);
3311         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3312
3313         if (id < 0) {
3314                 kfree_skb(ack_skb);
3315                 return ERR_PTR(-ENOMEM);
3316         }
3317
3318         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3319
3320         *cookie = ieee80211_mgmt_tx_cookie(local);
3321         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3322
3323         return ack_skb;
3324 }
3325
3326 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3327                              struct cfg80211_mgmt_tx_params *params,
3328                              u64 *cookie)
3329 {
3330         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3331         struct ieee80211_local *local = sdata->local;
3332         struct sk_buff *skb, *ack_skb;
3333         struct sta_info *sta;
3334         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3335         bool need_offchan = false;
3336         u32 flags;
3337         int ret;
3338         u8 *data;
3339
3340         if (params->dont_wait_for_ack)
3341                 flags = IEEE80211_TX_CTL_NO_ACK;
3342         else
3343                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3344                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3345
3346         if (params->no_cck)
3347                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3348
3349         switch (sdata->vif.type) {
3350         case NL80211_IFTYPE_ADHOC:
3351                 if (!sdata->vif.bss_conf.ibss_joined)
3352                         need_offchan = true;
3353                 /* fall through */
3354 #ifdef CONFIG_MAC80211_MESH
3355         case NL80211_IFTYPE_MESH_POINT:
3356                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3357                     !sdata->u.mesh.mesh_id_len)
3358                         need_offchan = true;
3359                 /* fall through */
3360 #endif
3361         case NL80211_IFTYPE_AP:
3362         case NL80211_IFTYPE_AP_VLAN:
3363         case NL80211_IFTYPE_P2P_GO:
3364                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3365                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3366                     !rcu_access_pointer(sdata->bss->beacon))
3367                         need_offchan = true;
3368                 if (!ieee80211_is_action(mgmt->frame_control) ||
3369                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3370                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3371                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3372                         break;
3373                 rcu_read_lock();
3374                 sta = sta_info_get(sdata, mgmt->da);
3375                 rcu_read_unlock();
3376                 if (!sta)
3377                         return -ENOLINK;
3378                 break;
3379         case NL80211_IFTYPE_STATION:
3380         case NL80211_IFTYPE_P2P_CLIENT:
3381                 sdata_lock(sdata);
3382                 if (!sdata->u.mgd.associated ||
3383                     (params->offchan && params->wait &&
3384                      local->ops->remain_on_channel &&
3385                      memcmp(sdata->u.mgd.associated->bssid,
3386                             mgmt->bssid, ETH_ALEN)))
3387                         need_offchan = true;
3388                 sdata_unlock(sdata);
3389                 break;
3390         case NL80211_IFTYPE_P2P_DEVICE:
3391                 need_offchan = true;
3392                 break;
3393         default:
3394                 return -EOPNOTSUPP;
3395         }
3396
3397         /* configurations requiring offchan cannot work if no channel has been
3398          * specified
3399          */
3400         if (need_offchan && !params->chan)
3401                 return -EINVAL;
3402
3403         mutex_lock(&local->mtx);
3404
3405         /* Check if the operating channel is the requested channel */
3406         if (!need_offchan) {
3407                 struct ieee80211_chanctx_conf *chanctx_conf;
3408
3409                 rcu_read_lock();
3410                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3411
3412                 if (chanctx_conf) {
3413                         need_offchan = params->chan &&
3414                                        (params->chan !=
3415                                         chanctx_conf->def.chan);
3416                 } else if (!params->chan) {
3417                         ret = -EINVAL;
3418                         rcu_read_unlock();
3419                         goto out_unlock;
3420                 } else {
3421                         need_offchan = true;
3422                 }
3423                 rcu_read_unlock();
3424         }
3425
3426         if (need_offchan && !params->offchan) {
3427                 ret = -EBUSY;
3428                 goto out_unlock;
3429         }
3430
3431         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3432         if (!skb) {
3433                 ret = -ENOMEM;
3434                 goto out_unlock;
3435         }
3436         skb_reserve(skb, local->hw.extra_tx_headroom);
3437
3438         data = skb_put(skb, params->len);
3439         memcpy(data, params->buf, params->len);
3440
3441         /* Update CSA counters */
3442         if (sdata->vif.csa_active &&
3443             (sdata->vif.type == NL80211_IFTYPE_AP ||
3444              sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
3445              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3446             params->n_csa_offsets) {
3447                 int i;
3448                 struct beacon_data *beacon = NULL;
3449
3450                 rcu_read_lock();
3451
3452                 if (sdata->vif.type == NL80211_IFTYPE_AP)
3453                         beacon = rcu_dereference(sdata->u.ap.beacon);
3454                 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3455                         beacon = rcu_dereference(sdata->u.ibss.presp);
3456                 else if (ieee80211_vif_is_mesh(&sdata->vif))
3457                         beacon = rcu_dereference(sdata->u.mesh.beacon);
3458
3459                 if (beacon)
3460                         for (i = 0; i < params->n_csa_offsets; i++)
3461                                 data[params->csa_offsets[i]] =
3462                                         beacon->csa_current_counter;
3463
3464                 rcu_read_unlock();
3465         }
3466
3467         IEEE80211_SKB_CB(skb)->flags = flags;
3468
3469         skb->dev = sdata->dev;
3470
3471         if (!params->dont_wait_for_ack) {
3472                 /* make a copy to preserve the frame contents
3473                  * in case of encryption.
3474                  */
3475                 ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
3476                                                  GFP_KERNEL);
3477                 if (IS_ERR(ack_skb)) {
3478                         ret = PTR_ERR(ack_skb);
3479                         kfree_skb(skb);
3480                         goto out_unlock;
3481                 }
3482         } else {
3483                 /* for cookie below */
3484                 ack_skb = skb;
3485         }
3486
3487         if (!need_offchan) {
3488                 ieee80211_tx_skb(sdata, skb);
3489                 ret = 0;
3490                 goto out_unlock;
3491         }
3492
3493         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3494                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3495         if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
3496                 IEEE80211_SKB_CB(skb)->hw_queue =
3497                         local->hw.offchannel_tx_hw_queue;
3498
3499         /* This will handle all kinds of coalescing and immediate TX */
3500         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3501                                        params->wait, cookie, skb,
3502                                        IEEE80211_ROC_TYPE_MGMT_TX);
3503         if (ret)
3504                 kfree_skb(skb);
3505  out_unlock:
3506         mutex_unlock(&local->mtx);
3507         return ret;
3508 }
3509
3510 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3511                                          struct wireless_dev *wdev,
3512                                          u64 cookie)
3513 {
3514         struct ieee80211_local *local = wiphy_priv(wiphy);
3515
3516         return ieee80211_cancel_roc(local, cookie, true);
3517 }
3518
3519 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3520                                           struct wireless_dev *wdev,
3521                                           u16 frame_type, bool reg)
3522 {
3523         struct ieee80211_local *local = wiphy_priv(wiphy);
3524
3525         switch (frame_type) {
3526         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3527                 if (reg)
3528                         local->probe_req_reg++;
3529                 else
3530                         local->probe_req_reg--;
3531
3532                 if (!local->open_count)
3533                         break;
3534
3535                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3536                 break;
3537         default:
3538                 break;
3539         }
3540 }
3541
3542 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3543 {
3544         struct ieee80211_local *local = wiphy_priv(wiphy);
3545
3546         if (local->started)
3547                 return -EOPNOTSUPP;
3548
3549         return drv_set_antenna(local, tx_ant, rx_ant);
3550 }
3551
3552 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3553 {
3554         struct ieee80211_local *local = wiphy_priv(wiphy);
3555
3556         return drv_get_antenna(local, tx_ant, rx_ant);
3557 }
3558
3559 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3560                                     struct net_device *dev,
3561                                     struct cfg80211_gtk_rekey_data *data)
3562 {
3563         struct ieee80211_local *local = wiphy_priv(wiphy);
3564         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3565
3566         if (!local->ops->set_rekey_data)
3567                 return -EOPNOTSUPP;
3568
3569         drv_set_rekey_data(local, sdata, data);
3570
3571         return 0;
3572 }
3573
3574 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3575                                   const u8 *peer, u64 *cookie)
3576 {
3577         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3578         struct ieee80211_local *local = sdata->local;
3579         struct ieee80211_qos_hdr *nullfunc;
3580         struct sk_buff *skb, *ack_skb;
3581         int size = sizeof(*nullfunc);
3582         __le16 fc;
3583         bool qos;
3584         struct ieee80211_tx_info *info;
3585         struct sta_info *sta;
3586         struct ieee80211_chanctx_conf *chanctx_conf;
3587         enum ieee80211_band band;
3588         int ret;
3589
3590         /* the lock is needed to assign the cookie later */
3591         mutex_lock(&local->mtx);
3592
3593         rcu_read_lock();
3594         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3595         if (WARN_ON(!chanctx_conf)) {
3596                 ret = -EINVAL;
3597                 goto unlock;
3598         }
3599         band = chanctx_conf->def.chan->band;
3600         sta = sta_info_get_bss(sdata, peer);
3601         if (sta) {
3602                 qos = sta->sta.wme;
3603         } else {
3604                 ret = -ENOLINK;
3605                 goto unlock;
3606         }
3607
3608         if (qos) {
3609                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3610                                  IEEE80211_STYPE_QOS_NULLFUNC |
3611                                  IEEE80211_FCTL_FROMDS);
3612         } else {
3613                 size -= 2;
3614                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3615                                  IEEE80211_STYPE_NULLFUNC |
3616                                  IEEE80211_FCTL_FROMDS);
3617         }
3618
3619         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3620         if (!skb) {
3621                 ret = -ENOMEM;
3622                 goto unlock;
3623         }
3624
3625         skb->dev = dev;
3626
3627         skb_reserve(skb, local->hw.extra_tx_headroom);
3628
3629         nullfunc = (void *) skb_put(skb, size);
3630         nullfunc->frame_control = fc;
3631         nullfunc->duration_id = 0;
3632         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3633         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3634         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3635         nullfunc->seq_ctrl = 0;
3636
3637         info = IEEE80211_SKB_CB(skb);
3638
3639         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3640                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3641         info->band = band;
3642
3643         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3644         skb->priority = 7;
3645         if (qos)
3646                 nullfunc->qos_ctrl = cpu_to_le16(7);
3647
3648         ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC);
3649         if (IS_ERR(ack_skb)) {
3650                 kfree_skb(skb);
3651                 ret = PTR_ERR(ack_skb);
3652                 goto unlock;
3653         }
3654
3655         local_bh_disable();
3656         ieee80211_xmit(sdata, sta, skb);
3657         local_bh_enable();
3658
3659         ret = 0;
3660 unlock:
3661         rcu_read_unlock();
3662         mutex_unlock(&local->mtx);
3663
3664         return ret;
3665 }
3666
3667 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3668                                      struct wireless_dev *wdev,
3669                                      struct cfg80211_chan_def *chandef)
3670 {
3671         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3672         struct ieee80211_local *local = wiphy_priv(wiphy);
3673         struct ieee80211_chanctx_conf *chanctx_conf;
3674         int ret = -ENODATA;
3675
3676         rcu_read_lock();
3677         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3678         if (chanctx_conf) {
3679                 *chandef = sdata->vif.bss_conf.chandef;
3680                 ret = 0;
3681         } else if (local->open_count > 0 &&
3682                    local->open_count == local->monitors &&
3683                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3684                 if (local->use_chanctx)
3685                         *chandef = local->monitor_chandef;
3686                 else
3687                         *chandef = local->_oper_chandef;
3688                 ret = 0;
3689         }
3690         rcu_read_unlock();
3691
3692         return ret;
3693 }
3694
3695 #ifdef CONFIG_PM
3696 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3697 {
3698         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3699 }
3700 #endif
3701
3702 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3703                                  struct net_device *dev,
3704                                  struct cfg80211_qos_map *qos_map)
3705 {
3706         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3707         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3708
3709         if (qos_map) {
3710                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3711                 if (!new_qos_map)
3712                         return -ENOMEM;
3713                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3714         } else {
3715                 /* A NULL qos_map was passed to disable QoS mapping */
3716                 new_qos_map = NULL;
3717         }
3718
3719         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3720         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3721         if (old_qos_map)
3722                 kfree_rcu(old_qos_map, rcu_head);
3723
3724         return 0;
3725 }
3726
3727 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3728                                       struct net_device *dev,
3729                                       struct cfg80211_chan_def *chandef)
3730 {
3731         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3732         int ret;
3733         u32 changed = 0;
3734
3735         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3736         if (ret == 0)
3737                 ieee80211_bss_info_change_notify(sdata, changed);
3738
3739         return ret;
3740 }
3741
3742 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3743                                u8 tsid, const u8 *peer, u8 up,
3744                                u16 admitted_time)
3745 {
3746         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3747         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3748         int ac = ieee802_1d_to_ac[up];
3749
3750         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3751                 return -EOPNOTSUPP;
3752
3753         if (!(sdata->wmm_acm & BIT(up)))
3754                 return -EINVAL;
3755
3756         if (ifmgd->tx_tspec[ac].admitted_time)
3757                 return -EBUSY;
3758
3759         if (admitted_time) {
3760                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3761                 ifmgd->tx_tspec[ac].tsid = tsid;
3762                 ifmgd->tx_tspec[ac].up = up;
3763         }
3764
3765         return 0;
3766 }
3767
3768 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3769                                u8 tsid, const u8 *peer)
3770 {
3771         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3772         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3773         struct ieee80211_local *local = wiphy_priv(wiphy);
3774         int ac;
3775
3776         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3777                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3778
3779                 /* skip unused entries */
3780                 if (!tx_tspec->admitted_time)
3781                         continue;
3782
3783                 if (tx_tspec->tsid != tsid)
3784                         continue;
3785
3786                 /* due to this new packets will be reassigned to non-ACM ACs */
3787                 tx_tspec->up = -1;
3788
3789                 /* Make sure that all packets have been sent to avoid to
3790                  * restore the QoS params on packets that are still on the
3791                  * queues.
3792                  */
3793                 synchronize_net();
3794                 ieee80211_flush_queues(local, sdata, false);
3795
3796                 /* restore the normal QoS parameters
3797                  * (unconditionally to avoid races)
3798                  */
3799                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3800                 tx_tspec->downgraded = false;
3801                 ieee80211_sta_handle_tspec_ac_params(sdata);
3802
3803                 /* finally clear all the data */
3804                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3805
3806                 return 0;
3807         }
3808
3809         return -ENOENT;
3810 }
3811
3812 const struct cfg80211_ops mac80211_config_ops = {
3813         .add_virtual_intf = ieee80211_add_iface,
3814         .del_virtual_intf = ieee80211_del_iface,
3815         .change_virtual_intf = ieee80211_change_iface,
3816         .start_p2p_device = ieee80211_start_p2p_device,
3817         .stop_p2p_device = ieee80211_stop_p2p_device,
3818         .add_key = ieee80211_add_key,
3819         .del_key = ieee80211_del_key,
3820         .get_key = ieee80211_get_key,
3821         .set_default_key = ieee80211_config_default_key,
3822         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3823         .start_ap = ieee80211_start_ap,
3824         .change_beacon = ieee80211_change_beacon,
3825         .stop_ap = ieee80211_stop_ap,
3826         .add_station = ieee80211_add_station,
3827         .del_station = ieee80211_del_station,
3828         .change_station = ieee80211_change_station,
3829         .get_station = ieee80211_get_station,
3830         .dump_station = ieee80211_dump_station,
3831         .dump_survey = ieee80211_dump_survey,
3832 #ifdef CONFIG_MAC80211_MESH
3833         .add_mpath = ieee80211_add_mpath,
3834         .del_mpath = ieee80211_del_mpath,
3835         .change_mpath = ieee80211_change_mpath,
3836         .get_mpath = ieee80211_get_mpath,
3837         .dump_mpath = ieee80211_dump_mpath,
3838         .get_mpp = ieee80211_get_mpp,
3839         .dump_mpp = ieee80211_dump_mpp,
3840         .update_mesh_config = ieee80211_update_mesh_config,
3841         .get_mesh_config = ieee80211_get_mesh_config,
3842         .join_mesh = ieee80211_join_mesh,
3843         .leave_mesh = ieee80211_leave_mesh,
3844 #endif
3845         .join_ocb = ieee80211_join_ocb,
3846         .leave_ocb = ieee80211_leave_ocb,
3847         .change_bss = ieee80211_change_bss,
3848         .set_txq_params = ieee80211_set_txq_params,
3849         .set_monitor_channel = ieee80211_set_monitor_channel,
3850         .suspend = ieee80211_suspend,
3851         .resume = ieee80211_resume,
3852         .scan = ieee80211_scan,
3853         .sched_scan_start = ieee80211_sched_scan_start,
3854         .sched_scan_stop = ieee80211_sched_scan_stop,
3855         .auth = ieee80211_auth,
3856         .assoc = ieee80211_assoc,
3857         .deauth = ieee80211_deauth,
3858         .disassoc = ieee80211_disassoc,
3859         .join_ibss = ieee80211_join_ibss,
3860         .leave_ibss = ieee80211_leave_ibss,
3861         .set_mcast_rate = ieee80211_set_mcast_rate,
3862         .set_wiphy_params = ieee80211_set_wiphy_params,
3863         .set_tx_power = ieee80211_set_tx_power,
3864         .get_tx_power = ieee80211_get_tx_power,
3865         .set_wds_peer = ieee80211_set_wds_peer,
3866         .rfkill_poll = ieee80211_rfkill_poll,
3867         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3868         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3869         .set_power_mgmt = ieee80211_set_power_mgmt,
3870         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3871         .remain_on_channel = ieee80211_remain_on_channel,
3872         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3873         .mgmt_tx = ieee80211_mgmt_tx,
3874         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3875         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3876         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3877         .set_antenna = ieee80211_set_antenna,
3878         .get_antenna = ieee80211_get_antenna,
3879         .set_rekey_data = ieee80211_set_rekey_data,
3880         .tdls_oper = ieee80211_tdls_oper,
3881         .tdls_mgmt = ieee80211_tdls_mgmt,
3882         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3883         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3884         .probe_client = ieee80211_probe_client,
3885         .set_noack_map = ieee80211_set_noack_map,
3886 #ifdef CONFIG_PM
3887         .set_wakeup = ieee80211_set_wakeup,
3888 #endif
3889         .get_channel = ieee80211_cfg_get_channel,
3890         .start_radar_detection = ieee80211_start_radar_detection,
3891         .channel_switch = ieee80211_channel_switch,
3892         .set_qos_map = ieee80211_set_qos_map,
3893         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3894         .add_tx_ts = ieee80211_add_tx_ts,
3895         .del_tx_ts = ieee80211_del_tx_ts,
3896 };