net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  *
   7  * This file is GPLv2 as found in COPYING.
   8  */
   9
  10 #include <linux/ieee80211.h>
  11 #include <linux/nl80211.h>
  12 #include <linux/rtnetlink.h>
  13 #include <linux/slab.h>
  14 #include <net/net_namespace.h>
  15 #include <linux/rcupdate.h>
  16 #include <linux/if_ether.h>
  17 #include <net/cfg80211.h>
  18 #include "ieee80211_i.h"
  19 #include "driver-ops.h"
  20 #include "cfg.h"
  21 #include "rate.h"
  22 #include "mesh.h"
  23 #include "wme.h"
  24
  25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  26                                                 const char *name,
  27                                                 unsigned char name_assign_type,
  28                                                 enum nl80211_iftype type,
  29                                                 u32 *flags,
  30                                                 struct vif_params *params)
  31 {
  32         struct ieee80211_local *local = wiphy_priv(wiphy);
  33         struct wireless_dev *wdev;
  34         struct ieee80211_sub_if_data *sdata;
  35         int err;
  36
  37         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
  38         if (err)
  39                 return ERR_PTR(err);
  40
  41         if (type == NL80211_IFTYPE_MONITOR && flags) {
  42                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  43                 sdata->u.mntr_flags = *flags;
  44         }
  45
  46         return wdev;
  47 }
  48
  49 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  50 {
  51         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  52
  53         return 0;
  54 }
  55
  56 static int ieee80211_change_iface(struct wiphy *wiphy,
  57                                   struct net_device *dev,
  58                                   enum nl80211_iftype type, u32 *flags,
  59                                   struct vif_params *params)
  60 {
  61         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  62         int ret;
  63
  64         ret = ieee80211_if_change_type(sdata, type);
  65         if (ret)
  66                 return ret;
  67
  68         if (type == NL80211_IFTYPE_AP_VLAN &&
  69             params && params->use_4addr == 0)
  70                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  71         else if (type == NL80211_IFTYPE_STATION &&
  72                  params && params->use_4addr >= 0)
  73                 sdata->u.mgd.use_4addr = params->use_4addr;
  74
  75         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  76                 struct ieee80211_local *local = sdata->local;
  77
  78                 if (ieee80211_sdata_running(sdata)) {
  79                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
  80                                    MONITOR_FLAG_ACTIVE;
  81
  82                         /*
  83                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
  84                          * MONITOR_FLAG_ACTIVE to be changed while the
  85                          * interface is up.
  86                          * Else we would need to add a lot of cruft
  87                          * to update everything:
  88                          *      cooked_mntrs, monitor and all fif_* counters
  89                          *      reconfigure hardware
  90                          */
  91                         if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  92                                 return -EBUSY;
  93
  94                         ieee80211_adjust_monitor_flags(sdata, -1);
  95                         sdata->u.mntr_flags = *flags;
  96                         ieee80211_adjust_monitor_flags(sdata, 1);
  97
  98                         ieee80211_configure_filter(local);
  99                 } else {
 100                         /*
 101                          * Because the interface is down, ieee80211_do_stop
 102                          * and ieee80211_do_open take care of "everything"
 103                          * mentioned in the comment above.
 104                          */
 105                         sdata->u.mntr_flags = *flags;
 106                 }
 107         }
 108
 109         return 0;
 110 }
 111
 112 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 113                                       struct wireless_dev *wdev)
 114 {
 115         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 116         int ret;
 117
 118         mutex_lock(&sdata->local->chanctx_mtx);
 119         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 120         mutex_unlock(&sdata->local->chanctx_mtx);
 121         if (ret < 0)
 122                 return ret;
 123
 124         return ieee80211_do_open(wdev, true);
 125 }
 126
 127 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 128                                       struct wireless_dev *wdev)
 129 {
 130         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 131 }
 132
 133 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 134                                   struct net_device *dev,
 135                                   u16 noack_map)
 136 {
 137         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 138
 139         sdata->noack_map = noack_map;
 140
 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                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 365                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 366                         drv_get_key_seq(sdata->local, key, &kseq);
 367                         memcpy(seq, kseq.ccmp.pn, 6);
 368                 } else {
 369                         pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 370                         seq[0] = pn64;
 371                         seq[1] = pn64 >> 8;
 372                         seq[2] = pn64 >> 16;
 373                         seq[3] = pn64 >> 24;
 374                         seq[4] = pn64 >> 32;
 375                         seq[5] = pn64 >> 40;
 376                 }
 377                 params.seq = seq;
 378                 params.seq_len = 6;
 379                 break;
 380         case WLAN_CIPHER_SUITE_AES_CMAC:
 381         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 382                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 383                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 384                         drv_get_key_seq(sdata->local, key, &kseq);
 385                         memcpy(seq, kseq.aes_cmac.pn, 6);
 386                 } else {
 387                         pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 388                         seq[0] = pn64;
 389                         seq[1] = pn64 >> 8;
 390                         seq[2] = pn64 >> 16;
 391                         seq[3] = pn64 >> 24;
 392                         seq[4] = pn64 >> 32;
 393                         seq[5] = pn64 >> 40;
 394                 }
 395                 params.seq = seq;
 396                 params.seq_len = 6;
 397                 break;
 398         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 399         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 400                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 401                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 402                         drv_get_key_seq(sdata->local, key, &kseq);
 403                         memcpy(seq, kseq.aes_gmac.pn, 6);
 404                 } else {
 405                         pn64 = atomic64_read(&key->u.aes_gmac.tx_pn);
 406                         seq[0] = pn64;
 407                         seq[1] = pn64 >> 8;
 408                         seq[2] = pn64 >> 16;
 409                         seq[3] = pn64 >> 24;
 410                         seq[4] = pn64 >> 32;
 411                         seq[5] = pn64 >> 40;
 412                 }
 413                 params.seq = seq;
 414                 params.seq_len = 6;
 415                 break;
 416         case WLAN_CIPHER_SUITE_GCMP:
 417         case WLAN_CIPHER_SUITE_GCMP_256:
 418                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 419                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 420                         drv_get_key_seq(sdata->local, key, &kseq);
 421                         memcpy(seq, kseq.gcmp.pn, 6);
 422                 } else {
 423                         pn64 = atomic64_read(&key->u.gcmp.tx_pn);
 424                         seq[0] = pn64;
 425                         seq[1] = pn64 >> 8;
 426                         seq[2] = pn64 >> 16;
 427                         seq[3] = pn64 >> 24;
 428                         seq[4] = pn64 >> 32;
 429                         seq[5] = pn64 >> 40;
 430                 }
 431                 params.seq = seq;
 432                 params.seq_len = 6;
 433                 break;
 434         default:
 435                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 436                         break;
 437                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 438                         break;
 439                 drv_get_key_seq(sdata->local, key, &kseq);
 440                 params.seq = kseq.hw.seq;
 441                 params.seq_len = kseq.hw.seq_len;
 442                 break;
 443         }
 444
 445         params.key = key->conf.key;
 446         params.key_len = key->conf.keylen;
 447
 448         callback(cookie, &params);
 449         err = 0;
 450
 451  out:
 452         rcu_read_unlock();
 453         return err;
 454 }
 455
 456 static int ieee80211_config_default_key(struct wiphy *wiphy,
 457                                         struct net_device *dev,
 458                                         u8 key_idx, bool uni,
 459                                         bool multi)
 460 {
 461         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 462
 463         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 464
 465         return 0;
 466 }
 467
 468 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 469                                              struct net_device *dev,
 470                                              u8 key_idx)
 471 {
 472         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 473
 474         ieee80211_set_default_mgmt_key(sdata, key_idx);
 475
 476         return 0;
 477 }
 478
 479 void sta_set_rate_info_tx(struct sta_info *sta,
 480                           const struct ieee80211_tx_rate *rate,
 481                           struct rate_info *rinfo)
 482 {
 483         rinfo->flags = 0;
 484         if (rate->flags & IEEE80211_TX_RC_MCS) {
 485                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 486                 rinfo->mcs = rate->idx;
 487         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 488                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 489                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 490                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 491         } else {
 492                 struct ieee80211_supported_band *sband;
 493                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 494                 u16 brate;
 495
 496                 sband = sta->local->hw.wiphy->bands[
 497                                 ieee80211_get_sdata_band(sta->sdata)];
 498                 brate = sband->bitrates[rate->idx].bitrate;
 499                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 500         }
 501         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 502                 rinfo->bw = RATE_INFO_BW_40;
 503         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 504                 rinfo->bw = RATE_INFO_BW_80;
 505         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 506                 rinfo->bw = RATE_INFO_BW_160;
 507         else
 508                 rinfo->bw = RATE_INFO_BW_20;
 509         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 510                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 511 }
 512
 513 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 514 {
 515         rinfo->flags = 0;
 516
 517         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 518                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 519                 rinfo->mcs = sta->last_rx_rate_idx;
 520         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 521                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 522                 rinfo->nss = sta->last_rx_rate_vht_nss;
 523                 rinfo->mcs = sta->last_rx_rate_idx;
 524         } else {
 525                 struct ieee80211_supported_band *sband;
 526                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 527                 u16 brate;
 528
 529                 sband = sta->local->hw.wiphy->bands[
 530                                 ieee80211_get_sdata_band(sta->sdata)];
 531                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 532                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 533         }
 534
 535         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 536                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 537
 538         if (sta->last_rx_rate_flag & RX_FLAG_5MHZ)
 539                 rinfo->bw = RATE_INFO_BW_5;
 540         else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ)
 541                 rinfo->bw = RATE_INFO_BW_10;
 542         else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 543                 rinfo->bw = RATE_INFO_BW_40;
 544         else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
 545                 rinfo->bw = RATE_INFO_BW_80;
 546         else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
 547                 rinfo->bw = RATE_INFO_BW_160;
 548         else
 549                 rinfo->bw = RATE_INFO_BW_20;
 550 }
 551
 552 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 553                                   int idx, u8 *mac, struct station_info *sinfo)
 554 {
 555         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 556         struct ieee80211_local *local = sdata->local;
 557         struct sta_info *sta;
 558         int ret = -ENOENT;
 559
 560         mutex_lock(&local->sta_mtx);
 561
 562         sta = sta_info_get_by_idx(sdata, idx);
 563         if (sta) {
 564                 ret = 0;
 565                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 566                 sta_set_sinfo(sta, sinfo);
 567         }
 568
 569         mutex_unlock(&local->sta_mtx);
 570
 571         return ret;
 572 }
 573
 574 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 575                                  int idx, struct survey_info *survey)
 576 {
 577         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 578
 579         return drv_get_survey(local, idx, survey);
 580 }
 581
 582 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 583                                  const u8 *mac, struct station_info *sinfo)
 584 {
 585         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 586         struct ieee80211_local *local = sdata->local;
 587         struct sta_info *sta;
 588         int ret = -ENOENT;
 589
 590         mutex_lock(&local->sta_mtx);
 591
 592         sta = sta_info_get_bss(sdata, mac);
 593         if (sta) {
 594                 ret = 0;
 595                 sta_set_sinfo(sta, sinfo);
 596         }
 597
 598         mutex_unlock(&local->sta_mtx);
 599
 600         return ret;
 601 }
 602
 603 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 604                                          struct cfg80211_chan_def *chandef)
 605 {
 606         struct ieee80211_local *local = wiphy_priv(wiphy);
 607         struct ieee80211_sub_if_data *sdata;
 608         int ret = 0;
 609
 610         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 611                 return 0;
 612
 613         mutex_lock(&local->mtx);
 614         mutex_lock(&local->iflist_mtx);
 615         if (local->use_chanctx) {
 616                 sdata = rcu_dereference_protected(
 617                                 local->monitor_sdata,
 618                                 lockdep_is_held(&local->iflist_mtx));
 619                 if (sdata) {
 620                         ieee80211_vif_release_channel(sdata);
 621                         ret = ieee80211_vif_use_channel(sdata, chandef,
 622                                         IEEE80211_CHANCTX_EXCLUSIVE);
 623                 }
 624         } else if (local->open_count == local->monitors) {
 625                 local->_oper_chandef = *chandef;
 626                 ieee80211_hw_config(local, 0);
 627         }
 628
 629         if (ret == 0)
 630                 local->monitor_chandef = *chandef;
 631         mutex_unlock(&local->iflist_mtx);
 632         mutex_unlock(&local->mtx);
 633
 634         return ret;
 635 }
 636
 637 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 638                                     const u8 *resp, size_t resp_len,
 639                                     const struct ieee80211_csa_settings *csa)
 640 {
 641         struct probe_resp *new, *old;
 642
 643         if (!resp || !resp_len)
 644                 return 1;
 645
 646         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 647
 648         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 649         if (!new)
 650                 return -ENOMEM;
 651
 652         new->len = resp_len;
 653         memcpy(new->data, resp, resp_len);
 654
 655         if (csa)
 656                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 657                        csa->n_counter_offsets_presp *
 658                        sizeof(new->csa_counter_offsets[0]));
 659
 660         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 661         if (old)
 662                 kfree_rcu(old, rcu_head);
 663
 664         return 0;
 665 }
 666
 667 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 668                                    struct cfg80211_beacon_data *params,
 669                                    const struct ieee80211_csa_settings *csa)
 670 {
 671         struct beacon_data *new, *old;
 672         int new_head_len, new_tail_len;
 673         int size, err;
 674         u32 changed = BSS_CHANGED_BEACON;
 675
 676         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 677
 678
 679         /* Need to have a beacon head if we don't have one yet */
 680         if (!params->head && !old)
 681                 return -EINVAL;
 682
 683         /* new or old head? */
 684         if (params->head)
 685                 new_head_len = params->head_len;
 686         else
 687                 new_head_len = old->head_len;
 688
 689         /* new or old tail? */
 690         if (params->tail || !old)
 691                 /* params->tail_len will be zero for !params->tail */
 692                 new_tail_len = params->tail_len;
 693         else
 694                 new_tail_len = old->tail_len;
 695
 696         size = sizeof(*new) + new_head_len + new_tail_len;
 697
 698         new = kzalloc(size, GFP_KERNEL);
 699         if (!new)
 700                 return -ENOMEM;
 701
 702         /* start filling the new info now */
 703
 704         /*
 705          * pointers go into the block we allocated,
 706          * memory is | beacon_data | head | tail |
 707          */
 708         new->head = ((u8 *) new) + sizeof(*new);
 709         new->tail = new->head + new_head_len;
 710         new->head_len = new_head_len;
 711         new->tail_len = new_tail_len;
 712
 713         if (csa) {
 714                 new->csa_current_counter = csa->count;
 715                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 716                        csa->n_counter_offsets_beacon *
 717                        sizeof(new->csa_counter_offsets[0]));
 718         }
 719
 720         /* copy in head */
 721         if (params->head)
 722                 memcpy(new->head, params->head, new_head_len);
 723         else
 724                 memcpy(new->head, old->head, new_head_len);
 725
 726         /* copy in optional tail */
 727         if (params->tail)
 728                 memcpy(new->tail, params->tail, new_tail_len);
 729         else
 730                 if (old)
 731                         memcpy(new->tail, old->tail, new_tail_len);
 732
 733         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 734                                        params->probe_resp_len, csa);
 735         if (err < 0)
 736                 return err;
 737         if (err == 0)
 738                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 739
 740         rcu_assign_pointer(sdata->u.ap.beacon, new);
 741
 742         if (old)
 743                 kfree_rcu(old, rcu_head);
 744
 745         return changed;
 746 }
 747
 748 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 749                               struct cfg80211_ap_settings *params)
 750 {
 751         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 752         struct ieee80211_local *local = sdata->local;
 753         struct beacon_data *old;
 754         struct ieee80211_sub_if_data *vlan;
 755         u32 changed = BSS_CHANGED_BEACON_INT |
 756                       BSS_CHANGED_BEACON_ENABLED |
 757                       BSS_CHANGED_BEACON |
 758                       BSS_CHANGED_SSID |
 759                       BSS_CHANGED_P2P_PS |
 760                       BSS_CHANGED_TXPOWER;
 761         int err;
 762
 763         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 764         if (old)
 765                 return -EALREADY;
 766
 767         switch (params->smps_mode) {
 768         case NL80211_SMPS_OFF:
 769                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 770                 break;
 771         case NL80211_SMPS_STATIC:
 772                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 773                 break;
 774         case NL80211_SMPS_DYNAMIC:
 775                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 776                 break;
 777         default:
 778                 return -EINVAL;
 779         }
 780         sdata->needed_rx_chains = sdata->local->rx_chains;
 781
 782         mutex_lock(&local->mtx);
 783         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 784                                         IEEE80211_CHANCTX_SHARED);
 785         if (!err)
 786                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 787         mutex_unlock(&local->mtx);
 788         if (err)
 789                 return err;
 790
 791         /*
 792          * Apply control port protocol, this allows us to
 793          * not encrypt dynamic WEP control frames.
 794          */
 795         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 796         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 797         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 798                                                         &params->crypto,
 799                                                         sdata->vif.type);
 800
 801         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 802                 vlan->control_port_protocol =
 803                         params->crypto.control_port_ethertype;
 804                 vlan->control_port_no_encrypt =
 805                         params->crypto.control_port_no_encrypt;
 806                 vlan->encrypt_headroom =
 807                         ieee80211_cs_headroom(sdata->local,
 808                                               &params->crypto,
 809                                               vlan->vif.type);
 810         }
 811
 812         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 813         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 814         sdata->vif.bss_conf.enable_beacon = true;
 815
 816         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 817         if (params->ssid_len)
 818                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 819                        params->ssid_len);
 820         sdata->vif.bss_conf.hidden_ssid =
 821                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 822
 823         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 824                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 825         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 826                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 827         if (params->p2p_opp_ps)
 828                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 829                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 830
 831         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 832         if (err < 0) {
 833                 ieee80211_vif_release_channel(sdata);
 834                 return err;
 835         }
 836         changed |= err;
 837
 838         err = drv_start_ap(sdata->local, sdata);
 839         if (err) {
 840                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 841
 842                 if (old)
 843                         kfree_rcu(old, rcu_head);
 844                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 845                 ieee80211_vif_release_channel(sdata);
 846                 return err;
 847         }
 848
 849         ieee80211_recalc_dtim(local, sdata);
 850         ieee80211_bss_info_change_notify(sdata, changed);
 851
 852         netif_carrier_on(dev);
 853         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 854                 netif_carrier_on(vlan->dev);
 855
 856         return 0;
 857 }
 858
 859 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 860                                    struct cfg80211_beacon_data *params)
 861 {
 862         struct ieee80211_sub_if_data *sdata;
 863         struct beacon_data *old;
 864         int err;
 865
 866         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 867         sdata_assert_lock(sdata);
 868
 869         /* don't allow changing the beacon while CSA is in place - offset
 870          * of channel switch counter may change
 871          */
 872         if (sdata->vif.csa_active)
 873                 return -EBUSY;
 874
 875         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 876         if (!old)
 877                 return -ENOENT;
 878
 879         err = ieee80211_assign_beacon(sdata, params, NULL);
 880         if (err < 0)
 881                 return err;
 882         ieee80211_bss_info_change_notify(sdata, err);
 883         return 0;
 884 }
 885
 886 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 887 {
 888         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 889         struct ieee80211_sub_if_data *vlan;
 890         struct ieee80211_local *local = sdata->local;
 891         struct beacon_data *old_beacon;
 892         struct probe_resp *old_probe_resp;
 893         struct cfg80211_chan_def chandef;
 894
 895         sdata_assert_lock(sdata);
 896
 897         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 898         if (!old_beacon)
 899                 return -ENOENT;
 900         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 901
 902         /* abort any running channel switch */
 903         mutex_lock(&local->mtx);
 904         sdata->vif.csa_active = false;
 905         if (sdata->csa_block_tx) {
 906                 ieee80211_wake_vif_queues(local, sdata,
 907                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 908                 sdata->csa_block_tx = false;
 909         }
 910
 911         mutex_unlock(&local->mtx);
 912
 913         kfree(sdata->u.ap.next_beacon);
 914         sdata->u.ap.next_beacon = NULL;
 915
 916         /* turn off carrier for this interface and dependent VLANs */
 917         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 918                 netif_carrier_off(vlan->dev);
 919         netif_carrier_off(dev);
 920
 921         /* remove beacon and probe response */
 922         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 923         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 924         kfree_rcu(old_beacon, rcu_head);
 925         if (old_probe_resp)
 926                 kfree_rcu(old_probe_resp, rcu_head);
 927         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 928
 929         __sta_info_flush(sdata, true);
 930         ieee80211_free_keys(sdata, true);
 931
 932         sdata->vif.bss_conf.enable_beacon = false;
 933         sdata->vif.bss_conf.ssid_len = 0;
 934         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 935         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 936
 937         if (sdata->wdev.cac_started) {
 938                 chandef = sdata->vif.bss_conf.chandef;
 939                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 940                 cfg80211_cac_event(sdata->dev, &chandef,
 941                                    NL80211_RADAR_CAC_ABORTED,
 942                                    GFP_KERNEL);
 943         }
 944
 945         drv_stop_ap(sdata->local, sdata);
 946
 947         /* free all potentially still buffered bcast frames */
 948         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 949         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 950
 951         mutex_lock(&local->mtx);
 952         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 953         ieee80211_vif_release_channel(sdata);
 954         mutex_unlock(&local->mtx);
 955
 956         return 0;
 957 }
 958
 959 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 960 struct iapp_layer2_update {
 961         u8 da[ETH_ALEN];        /* broadcast */
 962         u8 sa[ETH_ALEN];        /* STA addr */
 963         __be16 len;             /* 6 */
 964         u8 dsap;                /* 0 */
 965         u8 ssap;                /* 0 */
 966         u8 control;
 967         u8 xid_info[3];
 968 } __packed;
 969
 970 static void ieee80211_send_layer2_update(struct sta_info *sta)
 971 {
 972         struct iapp_layer2_update *msg;
 973         struct sk_buff *skb;
 974
 975         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 976          * bridge devices */
 977
 978         skb = dev_alloc_skb(sizeof(*msg));
 979         if (!skb)
 980                 return;
 981         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 982
 983         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 984          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 985
 986         eth_broadcast_addr(msg->da);
 987         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 988         msg->len = htons(6);
 989         msg->dsap = 0;
 990         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 991         msg->control = 0xaf;    /* XID response lsb.1111F101.
 992                                  * F=0 (no poll command; unsolicited frame) */
 993         msg->xid_info[0] = 0x81;        /* XID format identifier */
 994         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 995         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 996
 997         skb->dev = sta->sdata->dev;
 998         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 999         memset(skb->cb, 0, sizeof(skb->cb));
1000         netif_rx_ni(skb);
1001 }
1002
1003 static int sta_apply_auth_flags(struct ieee80211_local *local,
1004                                 struct sta_info *sta,
1005                                 u32 mask, u32 set)
1006 {
1007         int ret;
1008
1009         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1010             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1011             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1012                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1013                 if (ret)
1014                         return ret;
1015         }
1016
1017         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1018             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1019             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1020                 /*
1021                  * When peer becomes associated, init rate control as
1022                  * well. Some drivers require rate control initialized
1023                  * before drv_sta_state() is called.
1024                  */
1025                 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1026                         rate_control_rate_init(sta);
1027
1028                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1029                 if (ret)
1030                         return ret;
1031         }
1032
1033         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1034                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1035                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1036                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1037                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1038                 else
1039                         ret = 0;
1040                 if (ret)
1041                         return ret;
1042         }
1043
1044         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1045             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1046             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1047                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1048                 if (ret)
1049                         return ret;
1050         }
1051
1052         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1053             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1054             test_sta_flag(sta, WLAN_STA_AUTH)) {
1055                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1056                 if (ret)
1057                         return ret;
1058         }
1059
1060         return 0;
1061 }
1062
1063 static int sta_apply_parameters(struct ieee80211_local *local,
1064                                 struct sta_info *sta,
1065                                 struct station_parameters *params)
1066 {
1067         int ret = 0;
1068         struct ieee80211_supported_band *sband;
1069         struct ieee80211_sub_if_data *sdata = sta->sdata;
1070         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1071         u32 mask, set;
1072
1073         sband = local->hw.wiphy->bands[band];
1074
1075         mask = params->sta_flags_mask;
1076         set = params->sta_flags_set;
1077
1078         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1079                 /*
1080                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1081                  * API but must follow AUTHENTICATED for driver state.
1082                  */
1083                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1084                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1085                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1086                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1087         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1088                 /*
1089                  * TDLS -- everything follows authorized, but
1090                  * only becoming authorized is possible, not
1091                  * going back
1092                  */
1093                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1094                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1095                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1096                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1097                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1098                 }
1099         }
1100
1101         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1102             local->hw.queues >= IEEE80211_NUM_ACS)
1103                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1104
1105         /* auth flags will be set later for TDLS stations */
1106         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1107                 ret = sta_apply_auth_flags(local, sta, mask, set);
1108                 if (ret)
1109                         return ret;
1110         }
1111
1112         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1113                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1114                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1115                 else
1116                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1117         }
1118
1119         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1120                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1121                 if (set & BIT(NL80211_STA_FLAG_MFP))
1122                         set_sta_flag(sta, WLAN_STA_MFP);
1123                 else
1124                         clear_sta_flag(sta, WLAN_STA_MFP);
1125         }
1126
1127         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1128                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1129                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1130                 else
1131                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1132         }
1133
1134         /* mark TDLS channel switch support, if the AP allows it */
1135         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1136             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1137             params->ext_capab_len >= 4 &&
1138             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1139                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1140
1141         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1142                 sta->sta.uapsd_queues = params->uapsd_queues;
1143                 sta->sta.max_sp = params->max_sp;
1144         }
1145
1146         /*
1147          * cfg80211 validates this (1-2007) and allows setting the AID
1148          * only when creating a new station entry
1149          */
1150         if (params->aid)
1151                 sta->sta.aid = params->aid;
1152
1153         /*
1154          * Some of the following updates would be racy if called on an
1155          * existing station, via ieee80211_change_station(). However,
1156          * all such changes are rejected by cfg80211 except for updates
1157          * changing the supported rates on an existing but not yet used
1158          * TDLS peer.
1159          */
1160
1161         if (params->listen_interval >= 0)
1162                 sta->listen_interval = params->listen_interval;
1163
1164         if (params->supported_rates) {
1165                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1166                                          sband, params->supported_rates,
1167                                          params->supported_rates_len,
1168                                          &sta->sta.supp_rates[band]);
1169         }
1170
1171         if (params->ht_capa)
1172                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1173                                                   params->ht_capa, sta);
1174
1175         if (params->vht_capa)
1176                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1177                                                     params->vht_capa, sta);
1178
1179         if (params->opmode_notif_used) {
1180                 /* returned value is only needed for rc update, but the
1181                  * rc isn't initialized here yet, so ignore it
1182                  */
1183                 __ieee80211_vht_handle_opmode(sdata, sta,
1184                                               params->opmode_notif,
1185                                               band, false);
1186         }
1187
1188         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1189 #ifdef CONFIG_MAC80211_MESH
1190                 u32 changed = 0;
1191
1192                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1193                         switch (params->plink_state) {
1194                         case NL80211_PLINK_ESTAB:
1195                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1196                                         changed = mesh_plink_inc_estab_count(
1197                                                         sdata);
1198                                 sta->plink_state = params->plink_state;
1199
1200                                 ieee80211_mps_sta_status_update(sta);
1201                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1202                                               sdata->u.mesh.mshcfg.power_mode);
1203                                 break;
1204                         case NL80211_PLINK_LISTEN:
1205                         case NL80211_PLINK_BLOCKED:
1206                         case NL80211_PLINK_OPN_SNT:
1207                         case NL80211_PLINK_OPN_RCVD:
1208                         case NL80211_PLINK_CNF_RCVD:
1209                         case NL80211_PLINK_HOLDING:
1210                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1211                                         changed = mesh_plink_dec_estab_count(
1212                                                         sdata);
1213                                 sta->plink_state = params->plink_state;
1214
1215                                 ieee80211_mps_sta_status_update(sta);
1216                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1217                                                 NL80211_MESH_POWER_UNKNOWN);
1218                                 break;
1219                         default:
1220                                 /*  nothing  */
1221                                 break;
1222                         }
1223                 }
1224
1225                 switch (params->plink_action) {
1226                 case NL80211_PLINK_ACTION_NO_ACTION:
1227                         /* nothing */
1228                         break;
1229                 case NL80211_PLINK_ACTION_OPEN:
1230                         changed |= mesh_plink_open(sta);
1231                         break;
1232                 case NL80211_PLINK_ACTION_BLOCK:
1233                         changed |= mesh_plink_block(sta);
1234                         break;
1235                 }
1236
1237                 if (params->local_pm)
1238                         changed |=
1239                               ieee80211_mps_set_sta_local_pm(sta,
1240                                                              params->local_pm);
1241                 ieee80211_mbss_info_change_notify(sdata, changed);
1242 #endif
1243         }
1244
1245         /* set the STA state after all sta info from usermode has been set */
1246         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1247                 ret = sta_apply_auth_flags(local, sta, mask, set);
1248                 if (ret)
1249                         return ret;
1250         }
1251
1252         return 0;
1253 }
1254
1255 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1256                                  const u8 *mac,
1257                                  struct station_parameters *params)
1258 {
1259         struct ieee80211_local *local = wiphy_priv(wiphy);
1260         struct sta_info *sta;
1261         struct ieee80211_sub_if_data *sdata;
1262         int err;
1263         int layer2_update;
1264
1265         if (params->vlan) {
1266                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1267
1268                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1269                     sdata->vif.type != NL80211_IFTYPE_AP)
1270                         return -EINVAL;
1271         } else
1272                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1273
1274         if (ether_addr_equal(mac, sdata->vif.addr))
1275                 return -EINVAL;
1276
1277         if (is_multicast_ether_addr(mac))
1278                 return -EINVAL;
1279
1280         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1281         if (!sta)
1282                 return -ENOMEM;
1283
1284         /*
1285          * defaults -- if userspace wants something else we'll
1286          * change it accordingly in sta_apply_parameters()
1287          */
1288         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1289                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1290                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1291         } else {
1292                 sta->sta.tdls = true;
1293         }
1294
1295         err = sta_apply_parameters(local, sta, params);
1296         if (err) {
1297                 sta_info_free(local, sta);
1298                 return err;
1299         }
1300
1301         /*
1302          * for TDLS, rate control should be initialized only when
1303          * rates are known and station is marked authorized
1304          */
1305         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1306                 rate_control_rate_init(sta);
1307
1308         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1309                 sdata->vif.type == NL80211_IFTYPE_AP;
1310
1311         err = sta_info_insert_rcu(sta);
1312         if (err) {
1313                 rcu_read_unlock();
1314                 return err;
1315         }
1316
1317         if (layer2_update)
1318                 ieee80211_send_layer2_update(sta);
1319
1320         rcu_read_unlock();
1321
1322         return 0;
1323 }
1324
1325 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1326                                  struct station_del_parameters *params)
1327 {
1328         struct ieee80211_sub_if_data *sdata;
1329
1330         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1331
1332         if (params->mac)
1333                 return sta_info_destroy_addr_bss(sdata, params->mac);
1334
1335         sta_info_flush(sdata);
1336         return 0;
1337 }
1338
1339 static int ieee80211_change_station(struct wiphy *wiphy,
1340                                     struct net_device *dev, const u8 *mac,
1341                                     struct station_parameters *params)
1342 {
1343         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1344         struct ieee80211_local *local = wiphy_priv(wiphy);
1345         struct sta_info *sta;
1346         struct ieee80211_sub_if_data *vlansdata;
1347         enum cfg80211_station_type statype;
1348         int err;
1349
1350         mutex_lock(&local->sta_mtx);
1351
1352         sta = sta_info_get_bss(sdata, mac);
1353         if (!sta) {
1354                 err = -ENOENT;
1355                 goto out_err;
1356         }
1357
1358         switch (sdata->vif.type) {
1359         case NL80211_IFTYPE_MESH_POINT:
1360                 if (sdata->u.mesh.user_mpm)
1361                         statype = CFG80211_STA_MESH_PEER_USER;
1362                 else
1363                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1364                 break;
1365         case NL80211_IFTYPE_ADHOC:
1366                 statype = CFG80211_STA_IBSS;
1367                 break;
1368         case NL80211_IFTYPE_STATION:
1369                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1370                         statype = CFG80211_STA_AP_STA;
1371                         break;
1372                 }
1373                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1374                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1375                 else
1376                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1377                 break;
1378         case NL80211_IFTYPE_AP:
1379         case NL80211_IFTYPE_AP_VLAN:
1380                 statype = CFG80211_STA_AP_CLIENT;
1381                 break;
1382         default:
1383                 err = -EOPNOTSUPP;
1384                 goto out_err;
1385         }
1386
1387         err = cfg80211_check_station_change(wiphy, params, statype);
1388         if (err)
1389                 goto out_err;
1390
1391         if (params->vlan && params->vlan != sta->sdata->dev) {
1392                 bool prev_4addr = false;
1393                 bool new_4addr = false;
1394
1395                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1396
1397                 if (params->vlan->ieee80211_ptr->use_4addr) {
1398                         if (vlansdata->u.vlan.sta) {
1399                                 err = -EBUSY;
1400                                 goto out_err;
1401                         }
1402
1403                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1404                         new_4addr = true;
1405                 }
1406
1407                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1408                     sta->sdata->u.vlan.sta) {
1409                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1410                         prev_4addr = true;
1411                 }
1412
1413                 sta->sdata = vlansdata;
1414                 ieee80211_check_fast_xmit(sta);
1415
1416                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1417                     prev_4addr != new_4addr) {
1418                         if (new_4addr)
1419                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1420                         else
1421                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1422                 }
1423
1424                 ieee80211_send_layer2_update(sta);
1425         }
1426
1427         err = sta_apply_parameters(local, sta, params);
1428         if (err)
1429                 goto out_err;
1430
1431         mutex_unlock(&local->sta_mtx);
1432
1433         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1434              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1435             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1436             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1437             sta_info_tx_streams(sta) != 1) {
1438                 ht_dbg(sta->sdata,
1439                        "%pM just authorized and MIMO capable - update SMPS\n",
1440                        sta->sta.addr);
1441                 ieee80211_send_smps_action(sta->sdata,
1442                         sta->sdata->bss->req_smps,
1443                         sta->sta.addr,
1444                         sta->sdata->vif.bss_conf.bssid);
1445         }
1446
1447         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1448             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1449                 ieee80211_recalc_ps(local, -1);
1450                 ieee80211_recalc_ps_vif(sdata);
1451         }
1452
1453         return 0;
1454 out_err:
1455         mutex_unlock(&local->sta_mtx);
1456         return err;
1457 }
1458
1459 #ifdef CONFIG_MAC80211_MESH
1460 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1461                                const u8 *dst, const u8 *next_hop)
1462 {
1463         struct ieee80211_sub_if_data *sdata;
1464         struct mesh_path *mpath;
1465         struct sta_info *sta;
1466
1467         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1468
1469         rcu_read_lock();
1470         sta = sta_info_get(sdata, next_hop);
1471         if (!sta) {
1472                 rcu_read_unlock();
1473                 return -ENOENT;
1474         }
1475
1476         mpath = mesh_path_add(sdata, dst);
1477         if (IS_ERR(mpath)) {
1478                 rcu_read_unlock();
1479                 return PTR_ERR(mpath);
1480         }
1481
1482         mesh_path_fix_nexthop(mpath, sta);
1483
1484         rcu_read_unlock();
1485         return 0;
1486 }
1487
1488 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1489                                const u8 *dst)
1490 {
1491         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1492
1493         if (dst)
1494                 return mesh_path_del(sdata, dst);
1495
1496         mesh_path_flush_by_iface(sdata);
1497         return 0;
1498 }
1499
1500 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1501                                   const u8 *dst, const u8 *next_hop)
1502 {
1503         struct ieee80211_sub_if_data *sdata;
1504         struct mesh_path *mpath;
1505         struct sta_info *sta;
1506
1507         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1508
1509         rcu_read_lock();
1510
1511         sta = sta_info_get(sdata, next_hop);
1512         if (!sta) {
1513                 rcu_read_unlock();
1514                 return -ENOENT;
1515         }
1516
1517         mpath = mesh_path_lookup(sdata, dst);
1518         if (!mpath) {
1519                 rcu_read_unlock();
1520                 return -ENOENT;
1521         }
1522
1523         mesh_path_fix_nexthop(mpath, sta);
1524
1525         rcu_read_unlock();
1526         return 0;
1527 }
1528
1529 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1530                             struct mpath_info *pinfo)
1531 {
1532         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1533
1534         if (next_hop_sta)
1535                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1536         else
1537                 eth_zero_addr(next_hop);
1538
1539         memset(pinfo, 0, sizeof(*pinfo));
1540
1541         pinfo->generation = mesh_paths_generation;
1542
1543         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1544                         MPATH_INFO_SN |
1545                         MPATH_INFO_METRIC |
1546                         MPATH_INFO_EXPTIME |
1547                         MPATH_INFO_DISCOVERY_TIMEOUT |
1548                         MPATH_INFO_DISCOVERY_RETRIES |
1549                         MPATH_INFO_FLAGS;
1550
1551         pinfo->frame_qlen = mpath->frame_queue.qlen;
1552         pinfo->sn = mpath->sn;
1553         pinfo->metric = mpath->metric;
1554         if (time_before(jiffies, mpath->exp_time))
1555                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1556         pinfo->discovery_timeout =
1557                         jiffies_to_msecs(mpath->discovery_timeout);
1558         pinfo->discovery_retries = mpath->discovery_retries;
1559         if (mpath->flags & MESH_PATH_ACTIVE)
1560                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1561         if (mpath->flags & MESH_PATH_RESOLVING)
1562                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1563         if (mpath->flags & MESH_PATH_SN_VALID)
1564                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1565         if (mpath->flags & MESH_PATH_FIXED)
1566                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1567         if (mpath->flags & MESH_PATH_RESOLVED)
1568                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1569 }
1570
1571 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1572                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1573
1574 {
1575         struct ieee80211_sub_if_data *sdata;
1576         struct mesh_path *mpath;
1577
1578         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1579
1580         rcu_read_lock();
1581         mpath = mesh_path_lookup(sdata, dst);
1582         if (!mpath) {
1583                 rcu_read_unlock();
1584                 return -ENOENT;
1585         }
1586         memcpy(dst, mpath->dst, ETH_ALEN);
1587         mpath_set_pinfo(mpath, next_hop, pinfo);
1588         rcu_read_unlock();
1589         return 0;
1590 }
1591
1592 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1593                                 int idx, u8 *dst, u8 *next_hop,
1594                                 struct mpath_info *pinfo)
1595 {
1596         struct ieee80211_sub_if_data *sdata;
1597         struct mesh_path *mpath;
1598
1599         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1600
1601         rcu_read_lock();
1602         mpath = mesh_path_lookup_by_idx(sdata, idx);
1603         if (!mpath) {
1604                 rcu_read_unlock();
1605                 return -ENOENT;
1606         }
1607         memcpy(dst, mpath->dst, ETH_ALEN);
1608         mpath_set_pinfo(mpath, next_hop, pinfo);
1609         rcu_read_unlock();
1610         return 0;
1611 }
1612
1613 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1614                           struct mpath_info *pinfo)
1615 {
1616         memset(pinfo, 0, sizeof(*pinfo));
1617         memcpy(mpp, mpath->mpp, ETH_ALEN);
1618
1619         pinfo->generation = mpp_paths_generation;
1620 }
1621
1622 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1623                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1624
1625 {
1626         struct ieee80211_sub_if_data *sdata;
1627         struct mesh_path *mpath;
1628
1629         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1630
1631         rcu_read_lock();
1632         mpath = mpp_path_lookup(sdata, dst);
1633         if (!mpath) {
1634                 rcu_read_unlock();
1635                 return -ENOENT;
1636         }
1637         memcpy(dst, mpath->dst, ETH_ALEN);
1638         mpp_set_pinfo(mpath, mpp, pinfo);
1639         rcu_read_unlock();
1640         return 0;
1641 }
1642
1643 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1644                               int idx, u8 *dst, u8 *mpp,
1645                               struct mpath_info *pinfo)
1646 {
1647         struct ieee80211_sub_if_data *sdata;
1648         struct mesh_path *mpath;
1649
1650         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1651
1652         rcu_read_lock();
1653         mpath = mpp_path_lookup_by_idx(sdata, idx);
1654         if (!mpath) {
1655                 rcu_read_unlock();
1656                 return -ENOENT;
1657         }
1658         memcpy(dst, mpath->dst, ETH_ALEN);
1659         mpp_set_pinfo(mpath, mpp, pinfo);
1660         rcu_read_unlock();
1661         return 0;
1662 }
1663
1664 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1665                                 struct net_device *dev,
1666                                 struct mesh_config *conf)
1667 {
1668         struct ieee80211_sub_if_data *sdata;
1669         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1670
1671         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1672         return 0;
1673 }
1674
1675 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1676 {
1677         return (mask >> (parm-1)) & 0x1;
1678 }
1679
1680 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1681                 const struct mesh_setup *setup)
1682 {
1683         u8 *new_ie;
1684         const u8 *old_ie;
1685         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1686                                         struct ieee80211_sub_if_data, u.mesh);
1687
1688         /* allocate information elements */
1689         new_ie = NULL;
1690         old_ie = ifmsh->ie;
1691
1692         if (setup->ie_len) {
1693                 new_ie = kmemdup(setup->ie, setup->ie_len,
1694                                 GFP_KERNEL);
1695                 if (!new_ie)
1696                         return -ENOMEM;
1697         }
1698         ifmsh->ie_len = setup->ie_len;
1699         ifmsh->ie = new_ie;
1700         kfree(old_ie);
1701
1702         /* now copy the rest of the setup parameters */
1703         ifmsh->mesh_id_len = setup->mesh_id_len;
1704         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1705         ifmsh->mesh_sp_id = setup->sync_method;
1706         ifmsh->mesh_pp_id = setup->path_sel_proto;
1707         ifmsh->mesh_pm_id = setup->path_metric;
1708         ifmsh->user_mpm = setup->user_mpm;
1709         ifmsh->mesh_auth_id = setup->auth_id;
1710         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1711         if (setup->is_authenticated)
1712                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1713         if (setup->is_secure)
1714                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1715
1716         /* mcast rate setting in Mesh Node */
1717         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1718                                                 sizeof(setup->mcast_rate));
1719         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1720
1721         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1722         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1723
1724         return 0;
1725 }
1726
1727 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1728                                         struct net_device *dev, u32 mask,
1729                                         const struct mesh_config *nconf)
1730 {
1731         struct mesh_config *conf;
1732         struct ieee80211_sub_if_data *sdata;
1733         struct ieee80211_if_mesh *ifmsh;
1734
1735         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1736         ifmsh = &sdata->u.mesh;
1737
1738         /* Set the config options which we are interested in setting */
1739         conf = &(sdata->u.mesh.mshcfg);
1740         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1741                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1742         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1743                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1744         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1745                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1746         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1747                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1748         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1749                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1750         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1751                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1752         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1753                 conf->element_ttl = nconf->element_ttl;
1754         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1755                 if (ifmsh->user_mpm)
1756                         return -EBUSY;
1757                 conf->auto_open_plinks = nconf->auto_open_plinks;
1758         }
1759         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1760                 conf->dot11MeshNbrOffsetMaxNeighbor =
1761                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1762         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1763                 conf->dot11MeshHWMPmaxPREQretries =
1764                         nconf->dot11MeshHWMPmaxPREQretries;
1765         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1766                 conf->path_refresh_time = nconf->path_refresh_time;
1767         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1768                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1769         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1770                 conf->dot11MeshHWMPactivePathTimeout =
1771                         nconf->dot11MeshHWMPactivePathTimeout;
1772         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1773                 conf->dot11MeshHWMPpreqMinInterval =
1774                         nconf->dot11MeshHWMPpreqMinInterval;
1775         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1776                 conf->dot11MeshHWMPperrMinInterval =
1777                         nconf->dot11MeshHWMPperrMinInterval;
1778         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1779                            mask))
1780                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1781                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1782         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1783                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1784                 ieee80211_mesh_root_setup(ifmsh);
1785         }
1786         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1787                 /* our current gate announcement implementation rides on root
1788                  * announcements, so require this ifmsh to also be a root node
1789                  * */
1790                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1791                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1792                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1793                         ieee80211_mesh_root_setup(ifmsh);
1794                 }
1795                 conf->dot11MeshGateAnnouncementProtocol =
1796                         nconf->dot11MeshGateAnnouncementProtocol;
1797         }
1798         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1799                 conf->dot11MeshHWMPRannInterval =
1800                         nconf->dot11MeshHWMPRannInterval;
1801         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1802                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1803         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1804                 /* our RSSI threshold implementation is supported only for
1805                  * devices that report signal in dBm.
1806                  */
1807                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1808                         return -ENOTSUPP;
1809                 conf->rssi_threshold = nconf->rssi_threshold;
1810         }
1811         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1812                 conf->ht_opmode = nconf->ht_opmode;
1813                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1814                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1815         }
1816         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1817                 conf->dot11MeshHWMPactivePathToRootTimeout =
1818                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1819         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1820                 conf->dot11MeshHWMProotInterval =
1821                         nconf->dot11MeshHWMProotInterval;
1822         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1823                 conf->dot11MeshHWMPconfirmationInterval =
1824                         nconf->dot11MeshHWMPconfirmationInterval;
1825         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1826                 conf->power_mode = nconf->power_mode;
1827                 ieee80211_mps_local_status_update(sdata);
1828         }
1829         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1830                 conf->dot11MeshAwakeWindowDuration =
1831                         nconf->dot11MeshAwakeWindowDuration;
1832         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1833                 conf->plink_timeout = nconf->plink_timeout;
1834         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1835         return 0;
1836 }
1837
1838 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1839                                const struct mesh_config *conf,
1840                                const struct mesh_setup *setup)
1841 {
1842         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1843         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1844         int err;
1845
1846         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1847         err = copy_mesh_setup(ifmsh, setup);
1848         if (err)
1849                 return err;
1850
1851         /* can mesh use other SMPS modes? */
1852         sdata->smps_mode = IEEE80211_SMPS_OFF;
1853         sdata->needed_rx_chains = sdata->local->rx_chains;
1854
1855         mutex_lock(&sdata->local->mtx);
1856         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1857                                         IEEE80211_CHANCTX_SHARED);
1858         mutex_unlock(&sdata->local->mtx);
1859         if (err)
1860                 return err;
1861
1862         return ieee80211_start_mesh(sdata);
1863 }
1864
1865 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1866 {
1867         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1868
1869         ieee80211_stop_mesh(sdata);
1870         mutex_lock(&sdata->local->mtx);
1871         ieee80211_vif_release_channel(sdata);
1872         mutex_unlock(&sdata->local->mtx);
1873
1874         return 0;
1875 }
1876 #endif
1877
1878 static int ieee80211_change_bss(struct wiphy *wiphy,
1879                                 struct net_device *dev,
1880                                 struct bss_parameters *params)
1881 {
1882         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1883         enum ieee80211_band band;
1884         u32 changed = 0;
1885
1886         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1887                 return -ENOENT;
1888
1889         band = ieee80211_get_sdata_band(sdata);
1890
1891         if (params->use_cts_prot >= 0) {
1892                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1893                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1894         }
1895         if (params->use_short_preamble >= 0) {
1896                 sdata->vif.bss_conf.use_short_preamble =
1897                         params->use_short_preamble;
1898                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1899         }
1900
1901         if (!sdata->vif.bss_conf.use_short_slot &&
1902             band == IEEE80211_BAND_5GHZ) {
1903                 sdata->vif.bss_conf.use_short_slot = true;
1904                 changed |= BSS_CHANGED_ERP_SLOT;
1905         }
1906
1907         if (params->use_short_slot_time >= 0) {
1908                 sdata->vif.bss_conf.use_short_slot =
1909                         params->use_short_slot_time;
1910                 changed |= BSS_CHANGED_ERP_SLOT;
1911         }
1912
1913         if (params->basic_rates) {
1914                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1915                                          wiphy->bands[band],
1916                                          params->basic_rates,
1917                                          params->basic_rates_len,
1918                                          &sdata->vif.bss_conf.basic_rates);
1919                 changed |= BSS_CHANGED_BASIC_RATES;
1920         }
1921
1922         if (params->ap_isolate >= 0) {
1923                 if (params->ap_isolate)
1924                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1925                 else
1926                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1927         }
1928
1929         if (params->ht_opmode >= 0) {
1930                 sdata->vif.bss_conf.ht_operation_mode =
1931                         (u16) params->ht_opmode;
1932                 changed |= BSS_CHANGED_HT;
1933         }
1934
1935         if (params->p2p_ctwindow >= 0) {
1936                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1937                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1938                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1939                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1940                 changed |= BSS_CHANGED_P2P_PS;
1941         }
1942
1943         if (params->p2p_opp_ps > 0) {
1944                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1945                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1946                 changed |= BSS_CHANGED_P2P_PS;
1947         } else if (params->p2p_opp_ps == 0) {
1948                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1949                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1950                 changed |= BSS_CHANGED_P2P_PS;
1951         }
1952
1953         ieee80211_bss_info_change_notify(sdata, changed);
1954
1955         return 0;
1956 }
1957
1958 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1959                                     struct net_device *dev,
1960                                     struct ieee80211_txq_params *params)
1961 {
1962         struct ieee80211_local *local = wiphy_priv(wiphy);
1963         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1964         struct ieee80211_tx_queue_params p;
1965
1966         if (!local->ops->conf_tx)
1967                 return -EOPNOTSUPP;
1968
1969         if (local->hw.queues < IEEE80211_NUM_ACS)
1970                 return -EOPNOTSUPP;
1971
1972         memset(&p, 0, sizeof(p));
1973         p.aifs = params->aifs;
1974         p.cw_max = params->cwmax;
1975         p.cw_min = params->cwmin;
1976         p.txop = params->txop;
1977
1978         /*
1979          * Setting tx queue params disables u-apsd because it's only
1980          * called in master mode.
1981          */
1982         p.uapsd = false;
1983
1984         sdata->tx_conf[params->ac] = p;
1985         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1986                 wiphy_debug(local->hw.wiphy,
1987                             "failed to set TX queue parameters for AC %d\n",
1988                             params->ac);
1989                 return -EINVAL;
1990         }
1991
1992         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1993
1994         return 0;
1995 }
1996
1997 #ifdef CONFIG_PM
1998 static int ieee80211_suspend(struct wiphy *wiphy,
1999                              struct cfg80211_wowlan *wowlan)
2000 {
2001         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2002 }
2003
2004 static int ieee80211_resume(struct wiphy *wiphy)
2005 {
2006         return __ieee80211_resume(wiphy_priv(wiphy));
2007 }
2008 #else
2009 #define ieee80211_suspend NULL
2010 #define ieee80211_resume NULL
2011 #endif
2012
2013 static int ieee80211_scan(struct wiphy *wiphy,
2014                           struct cfg80211_scan_request *req)
2015 {
2016         struct ieee80211_sub_if_data *sdata;
2017
2018         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2019
2020         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2021         case NL80211_IFTYPE_STATION:
2022         case NL80211_IFTYPE_ADHOC:
2023         case NL80211_IFTYPE_MESH_POINT:
2024         case NL80211_IFTYPE_P2P_CLIENT:
2025         case NL80211_IFTYPE_P2P_DEVICE:
2026                 break;
2027         case NL80211_IFTYPE_P2P_GO:
2028                 if (sdata->local->ops->hw_scan)
2029                         break;
2030                 /*
2031                  * FIXME: implement NoA while scanning in software,
2032                  * for now fall through to allow scanning only when
2033                  * beaconing hasn't been configured yet
2034                  */
2035         case NL80211_IFTYPE_AP:
2036                 /*
2037                  * If the scan has been forced (and the driver supports
2038                  * forcing), don't care about being beaconing already.
2039                  * This will create problems to the attached stations (e.g. all
2040                  * the  frames sent while scanning on other channel will be
2041                  * lost)
2042                  */
2043                 if (sdata->u.ap.beacon &&
2044                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2045                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2046                         return -EOPNOTSUPP;
2047                 break;
2048         default:
2049                 return -EOPNOTSUPP;
2050         }
2051
2052         return ieee80211_request_scan(sdata, req);
2053 }
2054
2055 static int
2056 ieee80211_sched_scan_start(struct wiphy *wiphy,
2057                            struct net_device *dev,
2058                            struct cfg80211_sched_scan_request *req)
2059 {
2060         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2061
2062         if (!sdata->local->ops->sched_scan_start)
2063                 return -EOPNOTSUPP;
2064
2065         return ieee80211_request_sched_scan_start(sdata, req);
2066 }
2067
2068 static int
2069 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2070 {
2071         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2072
2073         if (!sdata->local->ops->sched_scan_stop)
2074                 return -EOPNOTSUPP;
2075
2076         return ieee80211_request_sched_scan_stop(sdata);
2077 }
2078
2079 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2080                           struct cfg80211_auth_request *req)
2081 {
2082         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2083 }
2084
2085 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2086                            struct cfg80211_assoc_request *req)
2087 {
2088         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2089 }
2090
2091 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2092                             struct cfg80211_deauth_request *req)
2093 {
2094         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2095 }
2096
2097 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2098                               struct cfg80211_disassoc_request *req)
2099 {
2100         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2101 }
2102
2103 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2104                                struct cfg80211_ibss_params *params)
2105 {
2106         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2107 }
2108
2109 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2110 {
2111         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2112 }
2113
2114 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2115                               struct ocb_setup *setup)
2116 {
2117         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2118 }
2119
2120 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2121 {
2122         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2123 }
2124
2125 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2126                                     int rate[IEEE80211_NUM_BANDS])
2127 {
2128         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2129
2130         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2131                sizeof(int) * IEEE80211_NUM_BANDS);
2132
2133         return 0;
2134 }
2135
2136 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2137 {
2138         struct ieee80211_local *local = wiphy_priv(wiphy);
2139         int err;
2140
2141         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2142                 ieee80211_check_fast_xmit_all(local);
2143
2144                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2145
2146                 if (err) {
2147                         ieee80211_check_fast_xmit_all(local);
2148                         return err;
2149                 }
2150         }
2151
2152         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2153             (changed & WIPHY_PARAM_DYN_ACK)) {
2154                 s16 coverage_class;
2155
2156                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2157                                         wiphy->coverage_class : -1;
2158                 err = drv_set_coverage_class(local, coverage_class);
2159
2160                 if (err)
2161                         return err;
2162         }
2163
2164         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2165                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2166
2167                 if (err)
2168                         return err;
2169         }
2170
2171         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2172                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2173                         return -EINVAL;
2174                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2175         }
2176         if (changed & WIPHY_PARAM_RETRY_LONG) {
2177                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2178                         return -EINVAL;
2179                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2180         }
2181         if (changed &
2182             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2183                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2184
2185         return 0;
2186 }
2187
2188 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2189                                   struct wireless_dev *wdev,
2190                                   enum nl80211_tx_power_setting type, int mbm)
2191 {
2192         struct ieee80211_local *local = wiphy_priv(wiphy);
2193         struct ieee80211_sub_if_data *sdata;
2194         enum nl80211_tx_power_setting txp_type = type;
2195         bool update_txp_type = false;
2196
2197         if (wdev) {
2198                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2199
2200                 switch (type) {
2201                 case NL80211_TX_POWER_AUTOMATIC:
2202                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2203                         txp_type = NL80211_TX_POWER_LIMITED;
2204                         break;
2205                 case NL80211_TX_POWER_LIMITED:
2206                 case NL80211_TX_POWER_FIXED:
2207                         if (mbm < 0 || (mbm % 100))
2208                                 return -EOPNOTSUPP;
2209                         sdata->user_power_level = MBM_TO_DBM(mbm);
2210                         break;
2211                 }
2212
2213                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2214                         update_txp_type = true;
2215                         sdata->vif.bss_conf.txpower_type = txp_type;
2216                 }
2217
2218                 ieee80211_recalc_txpower(sdata, update_txp_type);
2219
2220                 return 0;
2221         }
2222
2223         switch (type) {
2224         case NL80211_TX_POWER_AUTOMATIC:
2225                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2226                 txp_type = NL80211_TX_POWER_LIMITED;
2227                 break;
2228         case NL80211_TX_POWER_LIMITED:
2229         case NL80211_TX_POWER_FIXED:
2230                 if (mbm < 0 || (mbm % 100))
2231                         return -EOPNOTSUPP;
2232                 local->user_power_level = MBM_TO_DBM(mbm);
2233                 break;
2234         }
2235
2236         mutex_lock(&local->iflist_mtx);
2237         list_for_each_entry(sdata, &local->interfaces, list) {
2238                 sdata->user_power_level = local->user_power_level;
2239                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2240                         update_txp_type = true;
2241                 sdata->vif.bss_conf.txpower_type = txp_type;
2242         }
2243         list_for_each_entry(sdata, &local->interfaces, list)
2244                 ieee80211_recalc_txpower(sdata, update_txp_type);
2245         mutex_unlock(&local->iflist_mtx);
2246
2247         return 0;
2248 }
2249
2250 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2251                                   struct wireless_dev *wdev,
2252                                   int *dbm)
2253 {
2254         struct ieee80211_local *local = wiphy_priv(wiphy);
2255         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2256
2257         if (local->ops->get_txpower)
2258                 return drv_get_txpower(local, sdata, dbm);
2259
2260         if (!local->use_chanctx)
2261                 *dbm = local->hw.conf.power_level;
2262         else
2263                 *dbm = sdata->vif.bss_conf.txpower;
2264
2265         return 0;
2266 }
2267
2268 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2269                                   const u8 *addr)
2270 {
2271         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2272
2273         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2274
2275         return 0;
2276 }
2277
2278 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2279 {
2280         struct ieee80211_local *local = wiphy_priv(wiphy);
2281
2282         drv_rfkill_poll(local);
2283 }
2284
2285 #ifdef CONFIG_NL80211_TESTMODE
2286 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2287                                   struct wireless_dev *wdev,
2288                                   void *data, int len)
2289 {
2290         struct ieee80211_local *local = wiphy_priv(wiphy);
2291         struct ieee80211_vif *vif = NULL;
2292
2293         if (!local->ops->testmode_cmd)
2294                 return -EOPNOTSUPP;
2295
2296         if (wdev) {
2297                 struct ieee80211_sub_if_data *sdata;
2298
2299                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2300                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2301                         vif = &sdata->vif;
2302         }
2303
2304         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2305 }
2306
2307 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2308                                    struct sk_buff *skb,
2309                                    struct netlink_callback *cb,
2310                                    void *data, int len)
2311 {
2312         struct ieee80211_local *local = wiphy_priv(wiphy);
2313
2314         if (!local->ops->testmode_dump)
2315                 return -EOPNOTSUPP;
2316
2317         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2318 }
2319 #endif
2320
2321 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2322                                 enum ieee80211_smps_mode smps_mode)
2323 {
2324         struct sta_info *sta;
2325         enum ieee80211_smps_mode old_req;
2326
2327         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2328                 return -EINVAL;
2329
2330         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2331                 return 0;
2332
2333         old_req = sdata->u.ap.req_smps;
2334         sdata->u.ap.req_smps = smps_mode;
2335
2336         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2337         if (old_req == smps_mode ||
2338             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2339                 return 0;
2340
2341          /* If no associated stations, there's no need to do anything */
2342         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2343                 sdata->smps_mode = smps_mode;
2344                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2345                 return 0;
2346         }
2347
2348         ht_dbg(sdata,
2349                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2350                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2351
2352         mutex_lock(&sdata->local->sta_mtx);
2353         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2354                 /*
2355                  * Only stations associated to our AP and
2356                  * associated VLANs
2357                  */
2358                 if (sta->sdata->bss != &sdata->u.ap)
2359                         continue;
2360
2361                 /* This station doesn't support MIMO - skip it */
2362                 if (sta_info_tx_streams(sta) == 1)
2363                         continue;
2364
2365                 /*
2366                  * Don't wake up a STA just to send the action frame
2367                  * unless we are getting more restrictive.
2368                  */
2369                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2370                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2371                                                    smps_mode)) {
2372                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2373                                sta->sta.addr);
2374                         continue;
2375                 }
2376
2377                 /*
2378                  * If the STA is not authorized, wait until it gets
2379                  * authorized and the action frame will be sent then.
2380                  */
2381                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2382                         continue;
2383
2384                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2385                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2386                                            sdata->vif.bss_conf.bssid);
2387         }
2388         mutex_unlock(&sdata->local->sta_mtx);
2389
2390         sdata->smps_mode = smps_mode;
2391         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2392
2393         return 0;
2394 }
2395
2396 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2397                                  enum ieee80211_smps_mode smps_mode)
2398 {
2399         const u8 *ap;
2400         enum ieee80211_smps_mode old_req;
2401         int err;
2402
2403         lockdep_assert_held(&sdata->wdev.mtx);
2404
2405         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2406                 return -EINVAL;
2407
2408         old_req = sdata->u.mgd.req_smps;
2409         sdata->u.mgd.req_smps = smps_mode;
2410
2411         if (old_req == smps_mode &&
2412             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2413                 return 0;
2414
2415         /*
2416          * If not associated, or current association is not an HT
2417          * association, there's no need to do anything, just store
2418          * the new value until we associate.
2419          */
2420         if (!sdata->u.mgd.associated ||
2421             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2422                 return 0;
2423
2424         ap = sdata->u.mgd.associated->bssid;
2425
2426         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2427                 if (sdata->u.mgd.powersave)
2428                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2429                 else
2430                         smps_mode = IEEE80211_SMPS_OFF;
2431         }
2432
2433         /* send SM PS frame to AP */
2434         err = ieee80211_send_smps_action(sdata, smps_mode,
2435                                          ap, ap);
2436         if (err)
2437                 sdata->u.mgd.req_smps = old_req;
2438
2439         return err;
2440 }
2441
2442 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2443                                     bool enabled, int timeout)
2444 {
2445         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2446         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2447
2448         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2449                 return -EOPNOTSUPP;
2450
2451         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2452                 return -EOPNOTSUPP;
2453
2454         if (enabled == sdata->u.mgd.powersave &&
2455             timeout == local->dynamic_ps_forced_timeout)
2456                 return 0;
2457
2458         sdata->u.mgd.powersave = enabled;
2459         local->dynamic_ps_forced_timeout = timeout;
2460
2461         /* no change, but if automatic follow powersave */
2462         sdata_lock(sdata);
2463         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2464         sdata_unlock(sdata);
2465
2466         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2467                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2468
2469         ieee80211_recalc_ps(local, -1);
2470         ieee80211_recalc_ps_vif(sdata);
2471
2472         return 0;
2473 }
2474
2475 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2476                                          struct net_device *dev,
2477                                          s32 rssi_thold, u32 rssi_hyst)
2478 {
2479         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2480         struct ieee80211_vif *vif = &sdata->vif;
2481         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2482
2483         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2484             rssi_hyst == bss_conf->cqm_rssi_hyst)
2485                 return 0;
2486
2487         bss_conf->cqm_rssi_thold = rssi_thold;
2488         bss_conf->cqm_rssi_hyst = rssi_hyst;
2489
2490         /* tell the driver upon association, unless already associated */
2491         if (sdata->u.mgd.associated &&
2492             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2493                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2494
2495         return 0;
2496 }
2497
2498 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2499                                       struct net_device *dev,
2500                                       const u8 *addr,
2501                                       const struct cfg80211_bitrate_mask *mask)
2502 {
2503         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2504         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2505         int i, ret;
2506
2507         if (!ieee80211_sdata_running(sdata))
2508                 return -ENETDOWN;
2509
2510         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2511                 ret = drv_set_bitrate_mask(local, sdata, mask);
2512                 if (ret)
2513                         return ret;
2514         }
2515
2516         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2517                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2518                 int j;
2519
2520                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2521                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2522                        sizeof(mask->control[i].ht_mcs));
2523
2524                 sdata->rc_has_mcs_mask[i] = false;
2525                 if (!sband)
2526                         continue;
2527
2528                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2529                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2530                                 sdata->rc_has_mcs_mask[i] = true;
2531                                 break;
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 int ieee80211_start_roc_work(struct ieee80211_local *local,
2562                                     struct ieee80211_sub_if_data *sdata,
2563                                     struct ieee80211_channel *channel,
2564                                     unsigned int duration, u64 *cookie,
2565                                     struct sk_buff *txskb,
2566                                     enum ieee80211_roc_type type)
2567 {
2568         struct ieee80211_roc_work *roc, *tmp;
2569         bool queued = false;
2570         int ret;
2571
2572         lockdep_assert_held(&local->mtx);
2573
2574         if (local->use_chanctx && !local->ops->remain_on_channel)
2575                 return -EOPNOTSUPP;
2576
2577         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2578         if (!roc)
2579                 return -ENOMEM;
2580
2581         /*
2582          * If the duration is zero, then the driver
2583          * wouldn't actually do anything. Set it to
2584          * 10 for now.
2585          *
2586          * TODO: cancel the off-channel operation
2587          *       when we get the SKB's TX status and
2588          *       the wait time was zero before.
2589          */
2590         if (!duration)
2591                 duration = 10;
2592
2593         roc->chan = channel;
2594         roc->duration = duration;
2595         roc->req_duration = duration;
2596         roc->frame = txskb;
2597         roc->type = type;
2598         roc->mgmt_tx_cookie = (unsigned long)txskb;
2599         roc->sdata = sdata;
2600         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2601         INIT_LIST_HEAD(&roc->dependents);
2602
2603         /*
2604          * cookie is either the roc cookie (for normal roc)
2605          * or the SKB (for mgmt TX)
2606          */
2607         if (!txskb) {
2608                 /* local->mtx protects this */
2609                 local->roc_cookie_counter++;
2610                 roc->cookie = local->roc_cookie_counter;
2611                 /* wow, you wrapped 64 bits ... more likely a bug */
2612                 if (WARN_ON(roc->cookie == 0)) {
2613                         roc->cookie = 1;
2614                         local->roc_cookie_counter++;
2615                 }
2616                 *cookie = roc->cookie;
2617         } else {
2618                 *cookie = (unsigned long)txskb;
2619         }
2620
2621         /* if there's one pending or we're scanning, queue this one */
2622         if (!list_empty(&local->roc_list) ||
2623             local->scanning || ieee80211_is_radar_required(local))
2624                 goto out_check_combine;
2625
2626         /* if not HW assist, just queue & schedule work */
2627         if (!local->ops->remain_on_channel) {
2628                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2629                 goto out_queue;
2630         }
2631
2632         /* otherwise actually kick it off here (for error handling) */
2633
2634         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2635         if (ret) {
2636                 kfree(roc);
2637                 return ret;
2638         }
2639
2640         roc->started = true;
2641         goto out_queue;
2642
2643  out_check_combine:
2644         list_for_each_entry(tmp, &local->roc_list, list) {
2645                 if (tmp->chan != channel || tmp->sdata != sdata)
2646                         continue;
2647
2648                 /*
2649                  * Extend this ROC if possible:
2650                  *
2651                  * If it hasn't started yet, just increase the duration
2652                  * and add the new one to the list of dependents.
2653                  * If the type of the new ROC has higher priority, modify the
2654                  * type of the previous one to match that of the new one.
2655                  */
2656                 if (!tmp->started) {
2657                         list_add_tail(&roc->list, &tmp->dependents);
2658                         tmp->duration = max(tmp->duration, roc->duration);
2659                         tmp->type = max(tmp->type, roc->type);
2660                         queued = true;
2661                         break;
2662                 }
2663
2664                 /* If it has already started, it's more difficult ... */
2665                 if (local->ops->remain_on_channel) {
2666                         /*
2667                          * In the offloaded ROC case, if it hasn't begun, add
2668                          * this new one to the dependent list to be handled
2669                          * when the master one begins. If it has begun,
2670                          * check if it fits entirely within the existing one,
2671                          * in which case it will just be dependent as well.
2672                          * Otherwise, schedule it by itself.
2673                          */
2674                         if (!tmp->hw_begun) {
2675                                 list_add_tail(&roc->list, &tmp->dependents);
2676                                 queued = true;
2677                                 break;
2678                         }
2679
2680                         if (ieee80211_coalesce_started_roc(local, roc, tmp))
2681                                 queued = true;
2682                 } else if (del_timer_sync(&tmp->work.timer)) {
2683                         unsigned long new_end;
2684
2685                         /*
2686                          * In the software ROC case, cancel the timer, if
2687                          * that fails then the finish work is already
2688                          * queued/pending and thus we queue the new ROC
2689                          * normally, if that succeeds then we can extend
2690                          * the timer duration and TX the frame (if any.)
2691                          */
2692
2693                         list_add_tail(&roc->list, &tmp->dependents);
2694                         queued = true;
2695
2696                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2697
2698                         /* ok, it was started & we canceled timer */
2699                         if (time_after(new_end, tmp->work.timer.expires))
2700                                 mod_timer(&tmp->work.timer, new_end);
2701                         else
2702                                 add_timer(&tmp->work.timer);
2703
2704                         ieee80211_handle_roc_started(roc);
2705                 }
2706                 break;
2707         }
2708
2709  out_queue:
2710         if (!queued)
2711                 list_add_tail(&roc->list, &local->roc_list);
2712
2713         return 0;
2714 }
2715
2716 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2717                                        struct wireless_dev *wdev,
2718                                        struct ieee80211_channel *chan,
2719                                        unsigned int duration,
2720                                        u64 *cookie)
2721 {
2722         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2723         struct ieee80211_local *local = sdata->local;
2724         int ret;
2725
2726         mutex_lock(&local->mtx);
2727         ret = ieee80211_start_roc_work(local, sdata, chan,
2728                                        duration, cookie, NULL,
2729                                        IEEE80211_ROC_TYPE_NORMAL);
2730         mutex_unlock(&local->mtx);
2731
2732         return ret;
2733 }
2734
2735 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2736                                 u64 cookie, bool mgmt_tx)
2737 {
2738         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2739         int ret;
2740
2741         mutex_lock(&local->mtx);
2742         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2743                 struct ieee80211_roc_work *dep, *tmp2;
2744
2745                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2746                         if (!mgmt_tx && dep->cookie != cookie)
2747                                 continue;
2748                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2749                                 continue;
2750                         /* found dependent item -- just remove it */
2751                         list_del(&dep->list);
2752                         mutex_unlock(&local->mtx);
2753
2754                         ieee80211_roc_notify_destroy(dep, true);
2755                         return 0;
2756                 }
2757
2758                 if (!mgmt_tx && roc->cookie != cookie)
2759                         continue;
2760                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2761                         continue;
2762
2763                 found = roc;
2764                 break;
2765         }
2766
2767         if (!found) {
2768                 mutex_unlock(&local->mtx);
2769                 return -ENOENT;
2770         }
2771
2772         /*
2773          * We found the item to cancel, so do that. Note that it
2774          * may have dependents, which we also cancel (and send
2775          * the expired signal for.) Not doing so would be quite
2776          * tricky here, but we may need to fix it later.
2777          */
2778
2779         if (local->ops->remain_on_channel) {
2780                 if (found->started) {
2781                         ret = drv_cancel_remain_on_channel(local);
2782                         if (WARN_ON_ONCE(ret)) {
2783                                 mutex_unlock(&local->mtx);
2784                                 return ret;
2785                         }
2786                 }
2787
2788                 list_del(&found->list);
2789
2790                 if (found->started)
2791                         ieee80211_start_next_roc(local);
2792                 mutex_unlock(&local->mtx);
2793
2794                 ieee80211_roc_notify_destroy(found, true);
2795         } else {
2796                 /* work may be pending so use it all the time */
2797                 found->abort = true;
2798                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2799
2800                 mutex_unlock(&local->mtx);
2801
2802                 /* work will clean up etc */
2803                 flush_delayed_work(&found->work);
2804                 WARN_ON(!found->to_be_freed);
2805                 kfree(found);
2806         }
2807
2808         return 0;
2809 }
2810
2811 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2812                                               struct wireless_dev *wdev,
2813                                               u64 cookie)
2814 {
2815         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2816         struct ieee80211_local *local = sdata->local;
2817
2818         return ieee80211_cancel_roc(local, cookie, false);
2819 }
2820
2821 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2822                                            struct net_device *dev,
2823                                            struct cfg80211_chan_def *chandef,
2824                                            u32 cac_time_ms)
2825 {
2826         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2827         struct ieee80211_local *local = sdata->local;
2828         int err;
2829
2830         mutex_lock(&local->mtx);
2831         if (!list_empty(&local->roc_list) || local->scanning) {
2832                 err = -EBUSY;
2833                 goto out_unlock;
2834         }
2835
2836         /* whatever, but channel contexts should not complain about that one */
2837         sdata->smps_mode = IEEE80211_SMPS_OFF;
2838         sdata->needed_rx_chains = local->rx_chains;
2839
2840         err = ieee80211_vif_use_channel(sdata, chandef,
2841                                         IEEE80211_CHANCTX_SHARED);
2842         if (err)
2843                 goto out_unlock;
2844
2845         ieee80211_queue_delayed_work(&sdata->local->hw,
2846                                      &sdata->dfs_cac_timer_work,
2847                                      msecs_to_jiffies(cac_time_ms));
2848
2849  out_unlock:
2850         mutex_unlock(&local->mtx);
2851         return err;
2852 }
2853
2854 static struct cfg80211_beacon_data *
2855 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2856 {
2857         struct cfg80211_beacon_data *new_beacon;
2858         u8 *pos;
2859         int len;
2860
2861         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2862               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2863               beacon->probe_resp_len;
2864
2865         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2866         if (!new_beacon)
2867                 return NULL;
2868
2869         pos = (u8 *)(new_beacon + 1);
2870         if (beacon->head_len) {
2871                 new_beacon->head_len = beacon->head_len;
2872                 new_beacon->head = pos;
2873                 memcpy(pos, beacon->head, beacon->head_len);
2874                 pos += beacon->head_len;
2875         }
2876         if (beacon->tail_len) {
2877                 new_beacon->tail_len = beacon->tail_len;
2878                 new_beacon->tail = pos;
2879                 memcpy(pos, beacon->tail, beacon->tail_len);
2880                 pos += beacon->tail_len;
2881         }
2882         if (beacon->beacon_ies_len) {
2883                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2884                 new_beacon->beacon_ies = pos;
2885                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2886                 pos += beacon->beacon_ies_len;
2887         }
2888         if (beacon->proberesp_ies_len) {
2889                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2890                 new_beacon->proberesp_ies = pos;
2891                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2892                 pos += beacon->proberesp_ies_len;
2893         }
2894         if (beacon->assocresp_ies_len) {
2895                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2896                 new_beacon->assocresp_ies = pos;
2897                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2898                 pos += beacon->assocresp_ies_len;
2899         }
2900         if (beacon->probe_resp_len) {
2901                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2902                 beacon->probe_resp = pos;
2903                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2904                 pos += beacon->probe_resp_len;
2905         }
2906
2907         return new_beacon;
2908 }
2909
2910 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2911 {
2912         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2913
2914         ieee80211_queue_work(&sdata->local->hw,
2915                              &sdata->csa_finalize_work);
2916 }
2917 EXPORT_SYMBOL(ieee80211_csa_finish);
2918
2919 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2920                                           u32 *changed)
2921 {
2922         int err;
2923
2924         switch (sdata->vif.type) {
2925         case NL80211_IFTYPE_AP:
2926                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2927                                               NULL);
2928                 kfree(sdata->u.ap.next_beacon);
2929                 sdata->u.ap.next_beacon = NULL;
2930
2931                 if (err < 0)
2932                         return err;
2933                 *changed |= err;
2934                 break;
2935         case NL80211_IFTYPE_ADHOC:
2936                 err = ieee80211_ibss_finish_csa(sdata);
2937                 if (err < 0)
2938                         return err;
2939                 *changed |= err;
2940                 break;
2941 #ifdef CONFIG_MAC80211_MESH
2942         case NL80211_IFTYPE_MESH_POINT:
2943                 err = ieee80211_mesh_finish_csa(sdata);
2944                 if (err < 0)
2945                         return err;
2946                 *changed |= err;
2947                 break;
2948 #endif
2949         default:
2950                 WARN_ON(1);
2951                 return -EINVAL;
2952         }
2953
2954         return 0;
2955 }
2956
2957 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2958 {
2959         struct ieee80211_local *local = sdata->local;
2960         u32 changed = 0;
2961         int err;
2962
2963         sdata_assert_lock(sdata);
2964         lockdep_assert_held(&local->mtx);
2965         lockdep_assert_held(&local->chanctx_mtx);
2966
2967         /*
2968          * using reservation isn't immediate as it may be deferred until later
2969          * with multi-vif. once reservation is complete it will re-schedule the
2970          * work with no reserved_chanctx so verify chandef to check if it
2971          * completed successfully
2972          */
2973
2974         if (sdata->reserved_chanctx) {
2975                 /*
2976                  * with multi-vif csa driver may call ieee80211_csa_finish()
2977                  * many times while waiting for other interfaces to use their
2978                  * reservations
2979                  */
2980                 if (sdata->reserved_ready)
2981                         return 0;
2982
2983                 return ieee80211_vif_use_reserved_context(sdata);
2984         }
2985
2986         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2987                                         &sdata->csa_chandef))
2988                 return -EINVAL;
2989
2990         sdata->vif.csa_active = false;
2991
2992         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2993         if (err)
2994                 return err;
2995
2996         ieee80211_bss_info_change_notify(sdata, changed);
2997
2998         if (sdata->csa_block_tx) {
2999                 ieee80211_wake_vif_queues(local, sdata,
3000                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3001                 sdata->csa_block_tx = false;
3002         }
3003
3004         err = drv_post_channel_switch(sdata);
3005         if (err)
3006                 return err;
3007
3008         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3009
3010         return 0;
3011 }
3012
3013 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3014 {
3015         if (__ieee80211_csa_finalize(sdata)) {
3016                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3017                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3018                                     GFP_KERNEL);
3019         }
3020 }
3021
3022 void ieee80211_csa_finalize_work(struct work_struct *work)
3023 {
3024         struct ieee80211_sub_if_data *sdata =
3025                 container_of(work, struct ieee80211_sub_if_data,
3026                              csa_finalize_work);
3027         struct ieee80211_local *local = sdata->local;
3028
3029         sdata_lock(sdata);
3030         mutex_lock(&local->mtx);
3031         mutex_lock(&local->chanctx_mtx);
3032
3033         /* AP might have been stopped while waiting for the lock. */
3034         if (!sdata->vif.csa_active)
3035                 goto unlock;
3036
3037         if (!ieee80211_sdata_running(sdata))
3038                 goto unlock;
3039
3040         ieee80211_csa_finalize(sdata);
3041
3042 unlock:
3043         mutex_unlock(&local->chanctx_mtx);
3044         mutex_unlock(&local->mtx);
3045         sdata_unlock(sdata);
3046 }
3047
3048 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3049                                     struct cfg80211_csa_settings *params,
3050                                     u32 *changed)
3051 {
3052         struct ieee80211_csa_settings csa = {};
3053         int err;
3054
3055         switch (sdata->vif.type) {
3056         case NL80211_IFTYPE_AP:
3057                 sdata->u.ap.next_beacon =
3058                         cfg80211_beacon_dup(&params->beacon_after);
3059                 if (!sdata->u.ap.next_beacon)
3060                         return -ENOMEM;
3061
3062                 /*
3063                  * With a count of 0, we don't have to wait for any
3064                  * TBTT before switching, so complete the CSA
3065                  * immediately.  In theory, with a count == 1 we
3066                  * should delay the switch until just before the next
3067                  * TBTT, but that would complicate things so we switch
3068                  * immediately too.  If we would delay the switch
3069                  * until the next TBTT, we would have to set the probe
3070                  * response here.
3071                  *
3072                  * TODO: A channel switch with count <= 1 without
3073                  * sending a CSA action frame is kind of useless,
3074                  * because the clients won't know we're changing
3075                  * channels.  The action frame must be implemented
3076                  * either here or in the userspace.
3077                  */
3078                 if (params->count <= 1)
3079                         break;
3080
3081                 if ((params->n_counter_offsets_beacon >
3082                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3083                     (params->n_counter_offsets_presp >
3084                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3085                         return -EINVAL;
3086
3087                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3088                 csa.counter_offsets_presp = params->counter_offsets_presp;
3089                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3090                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3091                 csa.count = params->count;
3092
3093                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3094                 if (err < 0) {
3095                         kfree(sdata->u.ap.next_beacon);
3096                         return err;
3097                 }
3098                 *changed |= err;
3099
3100                 break;
3101         case NL80211_IFTYPE_ADHOC:
3102                 if (!sdata->vif.bss_conf.ibss_joined)
3103                         return -EINVAL;
3104
3105                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3106                         return -EINVAL;
3107
3108                 switch (params->chandef.width) {
3109                 case NL80211_CHAN_WIDTH_40:
3110                         if (cfg80211_get_chandef_type(&params->chandef) !=
3111                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3112                                 return -EINVAL;
3113                 case NL80211_CHAN_WIDTH_5:
3114                 case NL80211_CHAN_WIDTH_10:
3115                 case NL80211_CHAN_WIDTH_20_NOHT:
3116                 case NL80211_CHAN_WIDTH_20:
3117                         break;
3118                 default:
3119                         return -EINVAL;
3120                 }
3121
3122                 /* changes into another band are not supported */
3123                 if (sdata->u.ibss.chandef.chan->band !=
3124                     params->chandef.chan->band)
3125                         return -EINVAL;
3126
3127                 /* see comments in the NL80211_IFTYPE_AP block */
3128                 if (params->count > 1) {
3129                         err = ieee80211_ibss_csa_beacon(sdata, params);
3130                         if (err < 0)
3131                                 return err;
3132                         *changed |= err;
3133                 }
3134
3135                 ieee80211_send_action_csa(sdata, params);
3136
3137                 break;
3138 #ifdef CONFIG_MAC80211_MESH
3139         case NL80211_IFTYPE_MESH_POINT: {
3140                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3141
3142                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3143                         return -EINVAL;
3144
3145                 /* changes into another band are not supported */
3146                 if (sdata->vif.bss_conf.chandef.chan->band !=
3147                     params->chandef.chan->band)
3148                         return -EINVAL;
3149
3150                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3151                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3152                         if (!ifmsh->pre_value)
3153                                 ifmsh->pre_value = 1;
3154                         else
3155                                 ifmsh->pre_value++;
3156                 }
3157
3158                 /* see comments in the NL80211_IFTYPE_AP block */
3159                 if (params->count > 1) {
3160                         err = ieee80211_mesh_csa_beacon(sdata, params);
3161                         if (err < 0) {
3162                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3163                                 return err;
3164                         }
3165                         *changed |= err;
3166                 }
3167
3168                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3169                         ieee80211_send_action_csa(sdata, params);
3170
3171                 break;
3172                 }
3173 #endif
3174         default:
3175                 return -EOPNOTSUPP;
3176         }
3177
3178         return 0;
3179 }
3180
3181 static int
3182 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3183                            struct cfg80211_csa_settings *params)
3184 {
3185         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3186         struct ieee80211_local *local = sdata->local;
3187         struct ieee80211_channel_switch ch_switch;
3188         struct ieee80211_chanctx_conf *conf;
3189         struct ieee80211_chanctx *chanctx;
3190         u32 changed = 0;
3191         int err;
3192
3193         sdata_assert_lock(sdata);
3194         lockdep_assert_held(&local->mtx);
3195
3196         if (!list_empty(&local->roc_list) || local->scanning)
3197                 return -EBUSY;
3198
3199         if (sdata->wdev.cac_started)
3200                 return -EBUSY;
3201
3202         if (cfg80211_chandef_identical(&params->chandef,
3203                                        &sdata->vif.bss_conf.chandef))
3204                 return -EINVAL;
3205
3206         /* don't allow another channel switch if one is already active. */
3207         if (sdata->vif.csa_active)
3208                 return -EBUSY;
3209
3210         mutex_lock(&local->chanctx_mtx);
3211         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3212                                          lockdep_is_held(&local->chanctx_mtx));
3213         if (!conf) {
3214                 err = -EBUSY;
3215                 goto out;
3216         }
3217
3218         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3219         if (!chanctx) {
3220                 err = -EBUSY;
3221                 goto out;
3222         }
3223
3224         ch_switch.timestamp = 0;
3225         ch_switch.device_timestamp = 0;
3226         ch_switch.block_tx = params->block_tx;
3227         ch_switch.chandef = params->chandef;
3228         ch_switch.count = params->count;
3229
3230         err = drv_pre_channel_switch(sdata, &ch_switch);
3231         if (err)
3232                 goto out;
3233
3234         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3235                                             chanctx->mode,
3236                                             params->radar_required);
3237         if (err)
3238                 goto out;
3239
3240         /* if reservation is invalid then this will fail */
3241         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3242         if (err) {
3243                 ieee80211_vif_unreserve_chanctx(sdata);
3244                 goto out;
3245         }
3246
3247         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3248         if (err) {
3249                 ieee80211_vif_unreserve_chanctx(sdata);
3250                 goto out;
3251         }
3252
3253         sdata->csa_chandef = params->chandef;
3254         sdata->csa_block_tx = params->block_tx;
3255         sdata->vif.csa_active = true;
3256
3257         if (sdata->csa_block_tx)
3258                 ieee80211_stop_vif_queues(local, sdata,
3259                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3260
3261         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3262                                           params->count);
3263
3264         if (changed) {
3265                 ieee80211_bss_info_change_notify(sdata, changed);
3266                 drv_channel_switch_beacon(sdata, &params->chandef);
3267         } else {
3268                 /* if the beacon didn't change, we can finalize immediately */
3269                 ieee80211_csa_finalize(sdata);
3270         }
3271
3272 out:
3273         mutex_unlock(&local->chanctx_mtx);
3274         return err;
3275 }
3276
3277 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3278                              struct cfg80211_csa_settings *params)
3279 {
3280         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3281         struct ieee80211_local *local = sdata->local;
3282         int err;
3283
3284         mutex_lock(&local->mtx);
3285         err = __ieee80211_channel_switch(wiphy, dev, params);
3286         mutex_unlock(&local->mtx);
3287
3288         return err;
3289 }
3290
3291 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3292                              struct cfg80211_mgmt_tx_params *params,
3293                              u64 *cookie)
3294 {
3295         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3296         struct ieee80211_local *local = sdata->local;
3297         struct sk_buff *skb;
3298         struct sta_info *sta;
3299         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3300         bool need_offchan = false;
3301         u32 flags;
3302         int ret;
3303         u8 *data;
3304
3305         if (params->dont_wait_for_ack)
3306                 flags = IEEE80211_TX_CTL_NO_ACK;
3307         else
3308                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3309                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3310
3311         if (params->no_cck)
3312                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3313
3314         switch (sdata->vif.type) {
3315         case NL80211_IFTYPE_ADHOC:
3316                 if (!sdata->vif.bss_conf.ibss_joined)
3317                         need_offchan = true;
3318                 /* fall through */
3319 #ifdef CONFIG_MAC80211_MESH
3320         case NL80211_IFTYPE_MESH_POINT:
3321                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3322                     !sdata->u.mesh.mesh_id_len)
3323                         need_offchan = true;
3324                 /* fall through */
3325 #endif
3326         case NL80211_IFTYPE_AP:
3327         case NL80211_IFTYPE_AP_VLAN:
3328         case NL80211_IFTYPE_P2P_GO:
3329                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3330                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3331                     !rcu_access_pointer(sdata->bss->beacon))
3332                         need_offchan = true;
3333                 if (!ieee80211_is_action(mgmt->frame_control) ||
3334                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3335                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3336                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3337                         break;
3338                 rcu_read_lock();
3339                 sta = sta_info_get(sdata, mgmt->da);
3340                 rcu_read_unlock();
3341                 if (!sta)
3342                         return -ENOLINK;
3343                 break;
3344         case NL80211_IFTYPE_STATION:
3345         case NL80211_IFTYPE_P2P_CLIENT:
3346                 sdata_lock(sdata);
3347                 if (!sdata->u.mgd.associated ||
3348                     (params->offchan && params->wait &&
3349                      local->ops->remain_on_channel &&
3350                      memcmp(sdata->u.mgd.associated->bssid,
3351                             mgmt->bssid, ETH_ALEN)))
3352                         need_offchan = true;
3353                 sdata_unlock(sdata);
3354                 break;
3355         case NL80211_IFTYPE_P2P_DEVICE:
3356                 need_offchan = true;
3357                 break;
3358         default:
3359                 return -EOPNOTSUPP;
3360         }
3361
3362         /* configurations requiring offchan cannot work if no channel has been
3363          * specified
3364          */
3365         if (need_offchan && !params->chan)
3366                 return -EINVAL;
3367
3368         mutex_lock(&local->mtx);
3369
3370         /* Check if the operating channel is the requested channel */
3371         if (!need_offchan) {
3372                 struct ieee80211_chanctx_conf *chanctx_conf;
3373
3374                 rcu_read_lock();
3375                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3376
3377                 if (chanctx_conf) {
3378                         need_offchan = params->chan &&
3379                                        (params->chan !=
3380                                         chanctx_conf->def.chan);
3381                 } else if (!params->chan) {
3382                         ret = -EINVAL;
3383                         rcu_read_unlock();
3384                         goto out_unlock;
3385                 } else {
3386                         need_offchan = true;
3387                 }
3388                 rcu_read_unlock();
3389         }
3390
3391         if (need_offchan && !params->offchan) {
3392                 ret = -EBUSY;
3393                 goto out_unlock;
3394         }
3395
3396         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3397         if (!skb) {
3398                 ret = -ENOMEM;
3399                 goto out_unlock;
3400         }
3401         skb_reserve(skb, local->hw.extra_tx_headroom);
3402
3403         data = skb_put(skb, params->len);
3404         memcpy(data, params->buf, params->len);
3405
3406         /* Update CSA counters */
3407         if (sdata->vif.csa_active &&
3408             (sdata->vif.type == NL80211_IFTYPE_AP ||
3409              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3410             params->n_csa_offsets) {
3411                 int i;
3412                 struct beacon_data *beacon = NULL;
3413
3414                 rcu_read_lock();
3415
3416                 if (sdata->vif.type == NL80211_IFTYPE_AP)
3417                         beacon = rcu_dereference(sdata->u.ap.beacon);
3418                 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3419                         beacon = rcu_dereference(sdata->u.ibss.presp);
3420                 else if (ieee80211_vif_is_mesh(&sdata->vif))
3421                         beacon = rcu_dereference(sdata->u.mesh.beacon);
3422
3423                 if (beacon)
3424                         for (i = 0; i < params->n_csa_offsets; i++)
3425                                 data[params->csa_offsets[i]] =
3426                                         beacon->csa_current_counter;
3427
3428                 rcu_read_unlock();
3429         }
3430
3431         IEEE80211_SKB_CB(skb)->flags = flags;
3432
3433         skb->dev = sdata->dev;
3434
3435         if (!need_offchan) {
3436                 *cookie = (unsigned long) skb;
3437                 ieee80211_tx_skb(sdata, skb);
3438                 ret = 0;
3439                 goto out_unlock;
3440         }
3441
3442         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3443                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3444         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3445                 IEEE80211_SKB_CB(skb)->hw_queue =
3446                         local->hw.offchannel_tx_hw_queue;
3447
3448         /* This will handle all kinds of coalescing and immediate TX */
3449         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3450                                        params->wait, cookie, skb,
3451                                        IEEE80211_ROC_TYPE_MGMT_TX);
3452         if (ret)
3453                 kfree_skb(skb);
3454  out_unlock:
3455         mutex_unlock(&local->mtx);
3456         return ret;
3457 }
3458
3459 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3460                                          struct wireless_dev *wdev,
3461                                          u64 cookie)
3462 {
3463         struct ieee80211_local *local = wiphy_priv(wiphy);
3464
3465         return ieee80211_cancel_roc(local, cookie, true);
3466 }
3467
3468 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3469                                           struct wireless_dev *wdev,
3470                                           u16 frame_type, bool reg)
3471 {
3472         struct ieee80211_local *local = wiphy_priv(wiphy);
3473
3474         switch (frame_type) {
3475         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3476                 if (reg)
3477                         local->probe_req_reg++;
3478                 else
3479                         local->probe_req_reg--;
3480
3481                 if (!local->open_count)
3482                         break;
3483
3484                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3485                 break;
3486         default:
3487                 break;
3488         }
3489 }
3490
3491 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3492 {
3493         struct ieee80211_local *local = wiphy_priv(wiphy);
3494
3495         if (local->started)
3496                 return -EOPNOTSUPP;
3497
3498         return drv_set_antenna(local, tx_ant, rx_ant);
3499 }
3500
3501 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3502 {
3503         struct ieee80211_local *local = wiphy_priv(wiphy);
3504
3505         return drv_get_antenna(local, tx_ant, rx_ant);
3506 }
3507
3508 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3509                                     struct net_device *dev,
3510                                     struct cfg80211_gtk_rekey_data *data)
3511 {
3512         struct ieee80211_local *local = wiphy_priv(wiphy);
3513         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3514
3515         if (!local->ops->set_rekey_data)
3516                 return -EOPNOTSUPP;
3517
3518         drv_set_rekey_data(local, sdata, data);
3519
3520         return 0;
3521 }
3522
3523 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3524                                   const u8 *peer, u64 *cookie)
3525 {
3526         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3527         struct ieee80211_local *local = sdata->local;
3528         struct ieee80211_qos_hdr *nullfunc;
3529         struct sk_buff *skb;
3530         int size = sizeof(*nullfunc);
3531         __le16 fc;
3532         bool qos;
3533         struct ieee80211_tx_info *info;
3534         struct sta_info *sta;
3535         struct ieee80211_chanctx_conf *chanctx_conf;
3536         enum ieee80211_band band;
3537
3538         rcu_read_lock();
3539         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3540         if (WARN_ON(!chanctx_conf)) {
3541                 rcu_read_unlock();
3542                 return -EINVAL;
3543         }
3544         band = chanctx_conf->def.chan->band;
3545         sta = sta_info_get_bss(sdata, peer);
3546         if (sta) {
3547                 qos = sta->sta.wme;
3548         } else {
3549                 rcu_read_unlock();
3550                 return -ENOLINK;
3551         }
3552
3553         if (qos) {
3554                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3555                                  IEEE80211_STYPE_QOS_NULLFUNC |
3556                                  IEEE80211_FCTL_FROMDS);
3557         } else {
3558                 size -= 2;
3559                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3560                                  IEEE80211_STYPE_NULLFUNC |
3561                                  IEEE80211_FCTL_FROMDS);
3562         }
3563
3564         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3565         if (!skb) {
3566                 rcu_read_unlock();
3567                 return -ENOMEM;
3568         }
3569
3570         skb->dev = dev;
3571
3572         skb_reserve(skb, local->hw.extra_tx_headroom);
3573
3574         nullfunc = (void *) skb_put(skb, size);
3575         nullfunc->frame_control = fc;
3576         nullfunc->duration_id = 0;
3577         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3578         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3579         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3580         nullfunc->seq_ctrl = 0;
3581
3582         info = IEEE80211_SKB_CB(skb);
3583
3584         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3585                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3586         info->band = band;
3587
3588         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3589         skb->priority = 7;
3590         if (qos)
3591                 nullfunc->qos_ctrl = cpu_to_le16(7);
3592
3593         local_bh_disable();
3594         ieee80211_xmit(sdata, sta, skb);
3595         local_bh_enable();
3596         rcu_read_unlock();
3597
3598         *cookie = (unsigned long) skb;
3599         return 0;
3600 }
3601
3602 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3603                                      struct wireless_dev *wdev,
3604                                      struct cfg80211_chan_def *chandef)
3605 {
3606         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3607         struct ieee80211_local *local = wiphy_priv(wiphy);
3608         struct ieee80211_chanctx_conf *chanctx_conf;
3609         int ret = -ENODATA;
3610
3611         rcu_read_lock();
3612         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3613         if (chanctx_conf) {
3614                 *chandef = sdata->vif.bss_conf.chandef;
3615                 ret = 0;
3616         } else if (local->open_count > 0 &&
3617                    local->open_count == local->monitors &&
3618                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3619                 if (local->use_chanctx)
3620                         *chandef = local->monitor_chandef;
3621                 else
3622                         *chandef = local->_oper_chandef;
3623                 ret = 0;
3624         }
3625         rcu_read_unlock();
3626
3627         return ret;
3628 }
3629
3630 #ifdef CONFIG_PM
3631 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3632 {
3633         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3634 }
3635 #endif
3636
3637 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3638                                  struct net_device *dev,
3639                                  struct cfg80211_qos_map *qos_map)
3640 {
3641         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3642         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3643
3644         if (qos_map) {
3645                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3646                 if (!new_qos_map)
3647                         return -ENOMEM;
3648                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3649         } else {
3650                 /* A NULL qos_map was passed to disable QoS mapping */
3651                 new_qos_map = NULL;
3652         }
3653
3654         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3655         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3656         if (old_qos_map)
3657                 kfree_rcu(old_qos_map, rcu_head);
3658
3659         return 0;
3660 }
3661
3662 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3663                                       struct net_device *dev,
3664                                       struct cfg80211_chan_def *chandef)
3665 {
3666         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3667         int ret;
3668         u32 changed = 0;
3669
3670         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3671         if (ret == 0)
3672                 ieee80211_bss_info_change_notify(sdata, changed);
3673
3674         return ret;
3675 }
3676
3677 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3678                                u8 tsid, const u8 *peer, u8 up,
3679                                u16 admitted_time)
3680 {
3681         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3682         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3683         int ac = ieee802_1d_to_ac[up];
3684
3685         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3686                 return -EOPNOTSUPP;
3687
3688         if (!(sdata->wmm_acm & BIT(up)))
3689                 return -EINVAL;
3690
3691         if (ifmgd->tx_tspec[ac].admitted_time)
3692                 return -EBUSY;
3693
3694         if (admitted_time) {
3695                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3696                 ifmgd->tx_tspec[ac].tsid = tsid;
3697                 ifmgd->tx_tspec[ac].up = up;
3698         }
3699
3700         return 0;
3701 }
3702
3703 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3704                                u8 tsid, const u8 *peer)
3705 {
3706         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3707         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3708         struct ieee80211_local *local = wiphy_priv(wiphy);
3709         int ac;
3710
3711         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3712                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3713
3714                 /* skip unused entries */
3715                 if (!tx_tspec->admitted_time)
3716                         continue;
3717
3718                 if (tx_tspec->tsid != tsid)
3719                         continue;
3720
3721                 /* due to this new packets will be reassigned to non-ACM ACs */
3722                 tx_tspec->up = -1;
3723
3724                 /* Make sure that all packets have been sent to avoid to
3725                  * restore the QoS params on packets that are still on the
3726                  * queues.
3727                  */
3728                 synchronize_net();
3729                 ieee80211_flush_queues(local, sdata, false);
3730
3731                 /* restore the normal QoS parameters
3732                  * (unconditionally to avoid races)
3733                  */
3734                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3735                 tx_tspec->downgraded = false;
3736                 ieee80211_sta_handle_tspec_ac_params(sdata);
3737
3738                 /* finally clear all the data */
3739                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3740
3741                 return 0;
3742         }
3743
3744         return -ENOENT;
3745 }
3746
3747 const struct cfg80211_ops mac80211_config_ops = {
3748         .add_virtual_intf = ieee80211_add_iface,
3749         .del_virtual_intf = ieee80211_del_iface,
3750         .change_virtual_intf = ieee80211_change_iface,
3751         .start_p2p_device = ieee80211_start_p2p_device,
3752         .stop_p2p_device = ieee80211_stop_p2p_device,
3753         .add_key = ieee80211_add_key,
3754         .del_key = ieee80211_del_key,
3755         .get_key = ieee80211_get_key,
3756         .set_default_key = ieee80211_config_default_key,
3757         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3758         .start_ap = ieee80211_start_ap,
3759         .change_beacon = ieee80211_change_beacon,
3760         .stop_ap = ieee80211_stop_ap,
3761         .add_station = ieee80211_add_station,
3762         .del_station = ieee80211_del_station,
3763         .change_station = ieee80211_change_station,
3764         .get_station = ieee80211_get_station,
3765         .dump_station = ieee80211_dump_station,
3766         .dump_survey = ieee80211_dump_survey,
3767 #ifdef CONFIG_MAC80211_MESH
3768         .add_mpath = ieee80211_add_mpath,
3769         .del_mpath = ieee80211_del_mpath,
3770         .change_mpath = ieee80211_change_mpath,
3771         .get_mpath = ieee80211_get_mpath,
3772         .dump_mpath = ieee80211_dump_mpath,
3773         .get_mpp = ieee80211_get_mpp,
3774         .dump_mpp = ieee80211_dump_mpp,
3775         .update_mesh_config = ieee80211_update_mesh_config,
3776         .get_mesh_config = ieee80211_get_mesh_config,
3777         .join_mesh = ieee80211_join_mesh,
3778         .leave_mesh = ieee80211_leave_mesh,
3779 #endif
3780         .join_ocb = ieee80211_join_ocb,
3781         .leave_ocb = ieee80211_leave_ocb,
3782         .change_bss = ieee80211_change_bss,
3783         .set_txq_params = ieee80211_set_txq_params,
3784         .set_monitor_channel = ieee80211_set_monitor_channel,
3785         .suspend = ieee80211_suspend,
3786         .resume = ieee80211_resume,
3787         .scan = ieee80211_scan,
3788         .sched_scan_start = ieee80211_sched_scan_start,
3789         .sched_scan_stop = ieee80211_sched_scan_stop,
3790         .auth = ieee80211_auth,
3791         .assoc = ieee80211_assoc,
3792         .deauth = ieee80211_deauth,
3793         .disassoc = ieee80211_disassoc,
3794         .join_ibss = ieee80211_join_ibss,
3795         .leave_ibss = ieee80211_leave_ibss,
3796         .set_mcast_rate = ieee80211_set_mcast_rate,
3797         .set_wiphy_params = ieee80211_set_wiphy_params,
3798         .set_tx_power = ieee80211_set_tx_power,
3799         .get_tx_power = ieee80211_get_tx_power,
3800         .set_wds_peer = ieee80211_set_wds_peer,
3801         .rfkill_poll = ieee80211_rfkill_poll,
3802         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3803         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3804         .set_power_mgmt = ieee80211_set_power_mgmt,
3805         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3806         .remain_on_channel = ieee80211_remain_on_channel,
3807         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3808         .mgmt_tx = ieee80211_mgmt_tx,
3809         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3810         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3811         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3812         .set_antenna = ieee80211_set_antenna,
3813         .get_antenna = ieee80211_get_antenna,
3814         .set_rekey_data = ieee80211_set_rekey_data,
3815         .tdls_oper = ieee80211_tdls_oper,
3816         .tdls_mgmt = ieee80211_tdls_mgmt,
3817         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3818         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3819         .probe_client = ieee80211_probe_client,
3820         .set_noack_map = ieee80211_set_noack_map,
3821 #ifdef CONFIG_PM
3822         .set_wakeup = ieee80211_set_wakeup,
3823 #endif
3824         .get_channel = ieee80211_cfg_get_channel,
3825         .start_radar_detection = ieee80211_start_radar_detection,
3826         .channel_switch = ieee80211_channel_switch,
3827         .set_qos_map = ieee80211_set_qos_map,
3828         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3829         .add_tx_ts = ieee80211_add_tx_ts,
3830         .del_tx_ts = ieee80211_del_tx_ts,
3831 };