net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  *
   6  * This file is GPLv2 as found in COPYING.
   7  */
   8
   9 #include <linux/ieee80211.h>
  10 #include <linux/nl80211.h>
  11 #include <linux/rtnetlink.h>
  12 #include <linux/slab.h>
  13 #include <net/net_namespace.h>
  14 #include <linux/rcupdate.h>
  15 #include <linux/if_ether.h>
  16 #include <net/cfg80211.h>
  17 #include "ieee80211_i.h"
  18 #include "driver-ops.h"
  19 #include "cfg.h"
  20 #include "rate.h"
  21 #include "mesh.h"
  22
  23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  24                                                 const char *name,
  25                                                 enum nl80211_iftype type,
  26                                                 u32 *flags,
  27                                                 struct vif_params *params)
  28 {
  29         struct ieee80211_local *local = wiphy_priv(wiphy);
  30         struct wireless_dev *wdev;
  31         struct ieee80211_sub_if_data *sdata;
  32         int err;
  33
  34         err = ieee80211_if_add(local, name, &wdev, type, params);
  35         if (err)
  36                 return ERR_PTR(err);
  37
  38         if (type == NL80211_IFTYPE_MONITOR && flags) {
  39                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  40                 sdata->u.mntr_flags = *flags;
  41         }
  42
  43         return wdev;
  44 }
  45
  46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  47 {
  48         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  49
  50         return 0;
  51 }
  52
  53 static int ieee80211_change_iface(struct wiphy *wiphy,
  54                                   struct net_device *dev,
  55                                   enum nl80211_iftype type, u32 *flags,
  56                                   struct vif_params *params)
  57 {
  58         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  59         int ret;
  60
  61         ret = ieee80211_if_change_type(sdata, type);
  62         if (ret)
  63                 return ret;
  64
  65         if (type == NL80211_IFTYPE_AP_VLAN &&
  66             params && params->use_4addr == 0)
  67                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  68         else if (type == NL80211_IFTYPE_STATION &&
  69                  params && params->use_4addr >= 0)
  70                 sdata->u.mgd.use_4addr = params->use_4addr;
  71
  72         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  73                 struct ieee80211_local *local = sdata->local;
  74
  75                 if (ieee80211_sdata_running(sdata)) {
  76                         /*
  77                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  78                          * changed while the interface is up.
  79                          * Else we would need to add a lot of cruft
  80                          * to update everything:
  81                          *      cooked_mntrs, monitor and all fif_* counters
  82                          *      reconfigure hardware
  83                          */
  84                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  85                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  86                                 return -EBUSY;
  87
  88                         ieee80211_adjust_monitor_flags(sdata, -1);
  89                         sdata->u.mntr_flags = *flags;
  90                         ieee80211_adjust_monitor_flags(sdata, 1);
  91
  92                         ieee80211_configure_filter(local);
  93                 } else {
  94                         /*
  95                          * Because the interface is down, ieee80211_do_stop
  96                          * and ieee80211_do_open take care of "everything"
  97                          * mentioned in the comment above.
  98                          */
  99                         sdata->u.mntr_flags = *flags;
 100                 }
 101         }
 102
 103         return 0;
 104 }
 105
 106 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 107                                       struct wireless_dev *wdev)
 108 {
 109         return ieee80211_do_open(wdev, true);
 110 }
 111
 112 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 113                                       struct wireless_dev *wdev)
 114 {
 115         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 116 }
 117
 118 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 119                                   struct net_device *dev,
 120                                   u16 noack_map)
 121 {
 122         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 123
 124         sdata->noack_map = noack_map;
 125         return 0;
 126 }
 127
 128 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 129                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 130                              struct key_params *params)
 131 {
 132         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 133         struct sta_info *sta = NULL;
 134         struct ieee80211_key *key;
 135         int err;
 136
 137         if (!ieee80211_sdata_running(sdata))
 138                 return -ENETDOWN;
 139
 140         /* reject WEP and TKIP keys if WEP failed to initialize */
 141         switch (params->cipher) {
 142         case WLAN_CIPHER_SUITE_WEP40:
 143         case WLAN_CIPHER_SUITE_TKIP:
 144         case WLAN_CIPHER_SUITE_WEP104:
 145                 if (IS_ERR(sdata->local->wep_tx_tfm))
 146                         return -EINVAL;
 147                 break;
 148         default:
 149                 break;
 150         }
 151
 152         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 153                                   params->key, params->seq_len, params->seq);
 154         if (IS_ERR(key))
 155                 return PTR_ERR(key);
 156
 157         if (pairwise)
 158                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 159
 160         mutex_lock(&sdata->local->sta_mtx);
 161
 162         if (mac_addr) {
 163                 if (ieee80211_vif_is_mesh(&sdata->vif))
 164                         sta = sta_info_get(sdata, mac_addr);
 165                 else
 166                         sta = sta_info_get_bss(sdata, mac_addr);
 167                 if (!sta) {
 168                         ieee80211_key_free(sdata->local, key);
 169                         err = -ENOENT;
 170                         goto out_unlock;
 171                 }
 172         }
 173
 174         switch (sdata->vif.type) {
 175         case NL80211_IFTYPE_STATION:
 176                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 177                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 178                 break;
 179         case NL80211_IFTYPE_AP:
 180         case NL80211_IFTYPE_AP_VLAN:
 181                 /* Keys without a station are used for TX only */
 182                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 183                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 184                 break;
 185         case NL80211_IFTYPE_ADHOC:
 186                 /* no MFP (yet) */
 187                 break;
 188         case NL80211_IFTYPE_MESH_POINT:
 189 #ifdef CONFIG_MAC80211_MESH
 190                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 191                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 192                 break;
 193 #endif
 194         case NL80211_IFTYPE_WDS:
 195         case NL80211_IFTYPE_MONITOR:
 196         case NL80211_IFTYPE_P2P_DEVICE:
 197         case NL80211_IFTYPE_UNSPECIFIED:
 198         case NUM_NL80211_IFTYPES:
 199         case NL80211_IFTYPE_P2P_CLIENT:
 200         case NL80211_IFTYPE_P2P_GO:
 201                 /* shouldn't happen */
 202                 WARN_ON_ONCE(1);
 203                 break;
 204         }
 205
 206         err = ieee80211_key_link(key, sdata, sta);
 207         if (err)
 208                 ieee80211_key_free(sdata->local, key);
 209
 210  out_unlock:
 211         mutex_unlock(&sdata->local->sta_mtx);
 212
 213         return err;
 214 }
 215
 216 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 217                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 218 {
 219         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 220         struct ieee80211_local *local = sdata->local;
 221         struct sta_info *sta;
 222         struct ieee80211_key *key = NULL;
 223         int ret;
 224
 225         mutex_lock(&local->sta_mtx);
 226         mutex_lock(&local->key_mtx);
 227
 228         if (mac_addr) {
 229                 ret = -ENOENT;
 230
 231                 sta = sta_info_get_bss(sdata, mac_addr);
 232                 if (!sta)
 233                         goto out_unlock;
 234
 235                 if (pairwise)
 236                         key = key_mtx_dereference(local, sta->ptk);
 237                 else
 238                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 239         } else
 240                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 241
 242         if (!key) {
 243                 ret = -ENOENT;
 244                 goto out_unlock;
 245         }
 246
 247         __ieee80211_key_free(key);
 248
 249         ret = 0;
 250  out_unlock:
 251         mutex_unlock(&local->key_mtx);
 252         mutex_unlock(&local->sta_mtx);
 253
 254         return ret;
 255 }
 256
 257 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 258                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 259                              void *cookie,
 260                              void (*callback)(void *cookie,
 261                                               struct key_params *params))
 262 {
 263         struct ieee80211_sub_if_data *sdata;
 264         struct sta_info *sta = NULL;
 265         u8 seq[6] = {0};
 266         struct key_params params;
 267         struct ieee80211_key *key = NULL;
 268         u64 pn64;
 269         u32 iv32;
 270         u16 iv16;
 271         int err = -ENOENT;
 272
 273         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 274
 275         rcu_read_lock();
 276
 277         if (mac_addr) {
 278                 sta = sta_info_get_bss(sdata, mac_addr);
 279                 if (!sta)
 280                         goto out;
 281
 282                 if (pairwise)
 283                         key = rcu_dereference(sta->ptk);
 284                 else if (key_idx < NUM_DEFAULT_KEYS)
 285                         key = rcu_dereference(sta->gtk[key_idx]);
 286         } else
 287                 key = rcu_dereference(sdata->keys[key_idx]);
 288
 289         if (!key)
 290                 goto out;
 291
 292         memset(&params, 0, sizeof(params));
 293
 294         params.cipher = key->conf.cipher;
 295
 296         switch (key->conf.cipher) {
 297         case WLAN_CIPHER_SUITE_TKIP:
 298                 iv32 = key->u.tkip.tx.iv32;
 299                 iv16 = key->u.tkip.tx.iv16;
 300
 301                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 302                         drv_get_tkip_seq(sdata->local,
 303                                          key->conf.hw_key_idx,
 304                                          &iv32, &iv16);
 305
 306                 seq[0] = iv16 & 0xff;
 307                 seq[1] = (iv16 >> 8) & 0xff;
 308                 seq[2] = iv32 & 0xff;
 309                 seq[3] = (iv32 >> 8) & 0xff;
 310                 seq[4] = (iv32 >> 16) & 0xff;
 311                 seq[5] = (iv32 >> 24) & 0xff;
 312                 params.seq = seq;
 313                 params.seq_len = 6;
 314                 break;
 315         case WLAN_CIPHER_SUITE_CCMP:
 316                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 317                 seq[0] = pn64;
 318                 seq[1] = pn64 >> 8;
 319                 seq[2] = pn64 >> 16;
 320                 seq[3] = pn64 >> 24;
 321                 seq[4] = pn64 >> 32;
 322                 seq[5] = pn64 >> 40;
 323                 params.seq = seq;
 324                 params.seq_len = 6;
 325                 break;
 326         case WLAN_CIPHER_SUITE_AES_CMAC:
 327                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 328                 seq[0] = pn64;
 329                 seq[1] = pn64 >> 8;
 330                 seq[2] = pn64 >> 16;
 331                 seq[3] = pn64 >> 24;
 332                 seq[4] = pn64 >> 32;
 333                 seq[5] = pn64 >> 40;
 334                 params.seq = seq;
 335                 params.seq_len = 6;
 336                 break;
 337         }
 338
 339         params.key = key->conf.key;
 340         params.key_len = key->conf.keylen;
 341
 342         callback(cookie, &params);
 343         err = 0;
 344
 345  out:
 346         rcu_read_unlock();
 347         return err;
 348 }
 349
 350 static int ieee80211_config_default_key(struct wiphy *wiphy,
 351                                         struct net_device *dev,
 352                                         u8 key_idx, bool uni,
 353                                         bool multi)
 354 {
 355         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 356
 357         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 358
 359         return 0;
 360 }
 361
 362 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 363                                              struct net_device *dev,
 364                                              u8 key_idx)
 365 {
 366         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 367
 368         ieee80211_set_default_mgmt_key(sdata, key_idx);
 369
 370         return 0;
 371 }
 372
 373 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 374 {
 375         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 376                 struct ieee80211_supported_band *sband;
 377                 sband = sta->local->hw.wiphy->bands[
 378                                 sta->local->oper_channel->band];
 379                 rate->legacy = sband->bitrates[idx].bitrate;
 380         } else
 381                 rate->mcs = idx;
 382 }
 383
 384 void sta_set_rate_info_tx(struct sta_info *sta,
 385                           const struct ieee80211_tx_rate *rate,
 386                           struct rate_info *rinfo)
 387 {
 388         rinfo->flags = 0;
 389         if (rate->flags & IEEE80211_TX_RC_MCS)
 390                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 391         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 392                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 393         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 394                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 395         rate_idx_to_bitrate(rinfo, sta, rate->idx);
 396 }
 397
 398 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 399 {
 400         struct ieee80211_sub_if_data *sdata = sta->sdata;
 401         struct ieee80211_local *local = sdata->local;
 402         struct timespec uptime;
 403
 404         sinfo->generation = sdata->local->sta_generation;
 405
 406         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 407                         STATION_INFO_RX_BYTES |
 408                         STATION_INFO_TX_BYTES |
 409                         STATION_INFO_RX_PACKETS |
 410                         STATION_INFO_TX_PACKETS |
 411                         STATION_INFO_TX_RETRIES |
 412                         STATION_INFO_TX_FAILED |
 413                         STATION_INFO_TX_BITRATE |
 414                         STATION_INFO_RX_BITRATE |
 415                         STATION_INFO_RX_DROP_MISC |
 416                         STATION_INFO_BSS_PARAM |
 417                         STATION_INFO_CONNECTED_TIME |
 418                         STATION_INFO_STA_FLAGS |
 419                         STATION_INFO_BEACON_LOSS_COUNT;
 420
 421         do_posix_clock_monotonic_gettime(&uptime);
 422         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 423
 424         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 425         sinfo->rx_bytes = sta->rx_bytes;
 426         sinfo->tx_bytes = sta->tx_bytes;
 427         sinfo->rx_packets = sta->rx_packets;
 428         sinfo->tx_packets = sta->tx_packets;
 429         sinfo->tx_retries = sta->tx_retry_count;
 430         sinfo->tx_failed = sta->tx_retry_failed;
 431         sinfo->rx_dropped_misc = sta->rx_dropped;
 432         sinfo->beacon_loss_count = sta->beacon_loss_count;
 433
 434         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 435             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 436                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 437                 if (!local->ops->get_rssi ||
 438                     drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
 439                         sinfo->signal = (s8)sta->last_signal;
 440                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 441         }
 442
 443         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 444
 445         sinfo->rxrate.flags = 0;
 446         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 447                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 448         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 449                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 450         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 451                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 452         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 453
 454         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 455 #ifdef CONFIG_MAC80211_MESH
 456                 sinfo->filled |= STATION_INFO_LLID |
 457                                  STATION_INFO_PLID |
 458                                  STATION_INFO_PLINK_STATE;
 459
 460                 sinfo->llid = le16_to_cpu(sta->llid);
 461                 sinfo->plid = le16_to_cpu(sta->plid);
 462                 sinfo->plink_state = sta->plink_state;
 463                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 464                         sinfo->filled |= STATION_INFO_T_OFFSET;
 465                         sinfo->t_offset = sta->t_offset;
 466                 }
 467 #endif
 468         }
 469
 470         sinfo->bss_param.flags = 0;
 471         if (sdata->vif.bss_conf.use_cts_prot)
 472                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 473         if (sdata->vif.bss_conf.use_short_preamble)
 474                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 475         if (sdata->vif.bss_conf.use_short_slot)
 476                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 477         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 478         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 479
 480         sinfo->sta_flags.set = 0;
 481         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 482                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 483                                 BIT(NL80211_STA_FLAG_WME) |
 484                                 BIT(NL80211_STA_FLAG_MFP) |
 485                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 486                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 487         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 488                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 489         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 490                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 491         if (test_sta_flag(sta, WLAN_STA_WME))
 492                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 493         if (test_sta_flag(sta, WLAN_STA_MFP))
 494                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 495         if (test_sta_flag(sta, WLAN_STA_AUTH))
 496                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 497         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 498                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 499 }
 500
 501 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
 502         "rx_packets", "rx_bytes", "wep_weak_iv_count",
 503         "rx_duplicates", "rx_fragments", "rx_dropped",
 504         "tx_packets", "tx_bytes", "tx_fragments",
 505         "tx_filtered", "tx_retry_failed", "tx_retries",
 506         "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
 507         "channel", "noise", "ch_time", "ch_time_busy",
 508         "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
 509 };
 510 #define STA_STATS_LEN   ARRAY_SIZE(ieee80211_gstrings_sta_stats)
 511
 512 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
 513                                        struct net_device *dev,
 514                                        int sset)
 515 {
 516         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 517         int rv = 0;
 518
 519         if (sset == ETH_SS_STATS)
 520                 rv += STA_STATS_LEN;
 521
 522         rv += drv_get_et_sset_count(sdata, sset);
 523
 524         if (rv == 0)
 525                 return -EOPNOTSUPP;
 526         return rv;
 527 }
 528
 529 static void ieee80211_get_et_stats(struct wiphy *wiphy,
 530                                    struct net_device *dev,
 531                                    struct ethtool_stats *stats,
 532                                    u64 *data)
 533 {
 534         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 535         struct sta_info *sta;
 536         struct ieee80211_local *local = sdata->local;
 537         struct station_info sinfo;
 538         struct survey_info survey;
 539         int i, q;
 540 #define STA_STATS_SURVEY_LEN 7
 541
 542         memset(data, 0, sizeof(u64) * STA_STATS_LEN);
 543
 544 #define ADD_STA_STATS(sta)                              \
 545         do {                                            \
 546                 data[i++] += sta->rx_packets;           \
 547                 data[i++] += sta->rx_bytes;             \
 548                 data[i++] += sta->wep_weak_iv_count;    \
 549                 data[i++] += sta->num_duplicates;       \
 550                 data[i++] += sta->rx_fragments;         \
 551                 data[i++] += sta->rx_dropped;           \
 552                                                         \
 553                 data[i++] += sta->tx_packets;           \
 554                 data[i++] += sta->tx_bytes;             \
 555                 data[i++] += sta->tx_fragments;         \
 556                 data[i++] += sta->tx_filtered_count;    \
 557                 data[i++] += sta->tx_retry_failed;      \
 558                 data[i++] += sta->tx_retry_count;       \
 559                 data[i++] += sta->beacon_loss_count;    \
 560         } while (0)
 561
 562         /* For Managed stations, find the single station based on BSSID
 563          * and use that.  For interface types, iterate through all available
 564          * stations and add stats for any station that is assigned to this
 565          * network device.
 566          */
 567
 568         mutex_lock(&local->sta_mtx);
 569
 570         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 571                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
 572
 573                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
 574                         goto do_survey;
 575
 576                 i = 0;
 577                 ADD_STA_STATS(sta);
 578
 579                 data[i++] = sta->sta_state;
 580
 581                 sinfo.filled = 0;
 582                 sta_set_sinfo(sta, &sinfo);
 583
 584                 if (sinfo.filled & STATION_INFO_TX_BITRATE)
 585                         data[i] = 100000 *
 586                                 cfg80211_calculate_bitrate(&sinfo.txrate);
 587                 i++;
 588                 if (sinfo.filled & STATION_INFO_RX_BITRATE)
 589                         data[i] = 100000 *
 590                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
 591                 i++;
 592
 593                 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
 594                         data[i] = (u8)sinfo.signal_avg;
 595                 i++;
 596         } else {
 597                 list_for_each_entry(sta, &local->sta_list, list) {
 598                         /* Make sure this station belongs to the proper dev */
 599                         if (sta->sdata->dev != dev)
 600                                 continue;
 601
 602                         i = 0;
 603                         ADD_STA_STATS(sta);
 604                 }
 605         }
 606
 607 do_survey:
 608         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
 609         /* Get survey stats for current channel */
 610         q = 0;
 611         while (true) {
 612                 survey.filled = 0;
 613                 if (drv_get_survey(local, q, &survey) != 0) {
 614                         survey.filled = 0;
 615                         break;
 616                 }
 617
 618                 if (survey.channel &&
 619                     (local->oper_channel->center_freq ==
 620                      survey.channel->center_freq))
 621                         break;
 622                 q++;
 623         }
 624
 625         if (survey.filled)
 626                 data[i++] = survey.channel->center_freq;
 627         else
 628                 data[i++] = 0;
 629         if (survey.filled & SURVEY_INFO_NOISE_DBM)
 630                 data[i++] = (u8)survey.noise;
 631         else
 632                 data[i++] = -1LL;
 633         if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
 634                 data[i++] = survey.channel_time;
 635         else
 636                 data[i++] = -1LL;
 637         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
 638                 data[i++] = survey.channel_time_busy;
 639         else
 640                 data[i++] = -1LL;
 641         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
 642                 data[i++] = survey.channel_time_ext_busy;
 643         else
 644                 data[i++] = -1LL;
 645         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
 646                 data[i++] = survey.channel_time_rx;
 647         else
 648                 data[i++] = -1LL;
 649         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
 650                 data[i++] = survey.channel_time_tx;
 651         else
 652                 data[i++] = -1LL;
 653
 654         mutex_unlock(&local->sta_mtx);
 655
 656         if (WARN_ON(i != STA_STATS_LEN))
 657                 return;
 658
 659         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
 660 }
 661
 662 static void ieee80211_get_et_strings(struct wiphy *wiphy,
 663                                      struct net_device *dev,
 664                                      u32 sset, u8 *data)
 665 {
 666         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 667         int sz_sta_stats = 0;
 668
 669         if (sset == ETH_SS_STATS) {
 670                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
 671                 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
 672         }
 673         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 674 }
 675
 676 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 677                                  int idx, u8 *mac, struct station_info *sinfo)
 678 {
 679         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 680         struct ieee80211_local *local = sdata->local;
 681         struct sta_info *sta;
 682         int ret = -ENOENT;
 683
 684         mutex_lock(&local->sta_mtx);
 685
 686         sta = sta_info_get_by_idx(sdata, idx);
 687         if (sta) {
 688                 ret = 0;
 689                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 690                 sta_set_sinfo(sta, sinfo);
 691         }
 692
 693         mutex_unlock(&local->sta_mtx);
 694
 695         return ret;
 696 }
 697
 698 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 699                                  int idx, struct survey_info *survey)
 700 {
 701         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 702
 703         return drv_get_survey(local, idx, survey);
 704 }
 705
 706 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 707                                  u8 *mac, struct station_info *sinfo)
 708 {
 709         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 710         struct ieee80211_local *local = sdata->local;
 711         struct sta_info *sta;
 712         int ret = -ENOENT;
 713
 714         mutex_lock(&local->sta_mtx);
 715
 716         sta = sta_info_get_bss(sdata, mac);
 717         if (sta) {
 718                 ret = 0;
 719                 sta_set_sinfo(sta, sinfo);
 720         }
 721
 722         mutex_unlock(&local->sta_mtx);
 723
 724         return ret;
 725 }
 726
 727 static int ieee80211_set_channel(struct wiphy *wiphy,
 728                                  struct net_device *netdev,
 729                                  struct ieee80211_channel *chan,
 730                                  enum nl80211_channel_type channel_type)
 731 {
 732         struct ieee80211_local *local = wiphy_priv(wiphy);
 733         struct ieee80211_sub_if_data *sdata = NULL;
 734
 735         if (netdev)
 736                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
 737
 738         switch (ieee80211_get_channel_mode(local, NULL)) {
 739         case CHAN_MODE_HOPPING:
 740                 return -EBUSY;
 741         case CHAN_MODE_FIXED:
 742                 if (local->oper_channel != chan ||
 743                     (!sdata && local->_oper_channel_type != channel_type))
 744                         return -EBUSY;
 745                 if (!sdata && local->_oper_channel_type == channel_type)
 746                         return 0;
 747                 break;
 748         case CHAN_MODE_UNDEFINED:
 749                 break;
 750         }
 751
 752         if (!ieee80211_set_channel_type(local, sdata, channel_type))
 753                 return -EBUSY;
 754
 755         local->oper_channel = chan;
 756
 757         /* auto-detects changes */
 758         ieee80211_hw_config(local, 0);
 759
 760         return 0;
 761 }
 762
 763 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 764                                          struct ieee80211_channel *chan,
 765                                          enum nl80211_channel_type channel_type)
 766 {
 767         return ieee80211_set_channel(wiphy, NULL, chan, channel_type);
 768 }
 769
 770 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 771                                     const u8 *resp, size_t resp_len)
 772 {
 773         struct probe_resp *new, *old;
 774
 775         if (!resp || !resp_len)
 776                 return 1;
 777
 778         old = rtnl_dereference(sdata->u.ap.probe_resp);
 779
 780         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 781         if (!new)
 782                 return -ENOMEM;
 783
 784         new->len = resp_len;
 785         memcpy(new->data, resp, resp_len);
 786
 787         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 788         if (old)
 789                 kfree_rcu(old, rcu_head);
 790
 791         return 0;
 792 }
 793
 794 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 795                                    struct cfg80211_beacon_data *params)
 796 {
 797         struct beacon_data *new, *old;
 798         int new_head_len, new_tail_len;
 799         int size, err;
 800         u32 changed = BSS_CHANGED_BEACON;
 801
 802         old = rtnl_dereference(sdata->u.ap.beacon);
 803
 804         /* Need to have a beacon head if we don't have one yet */
 805         if (!params->head && !old)
 806                 return -EINVAL;
 807
 808         /* new or old head? */
 809         if (params->head)
 810                 new_head_len = params->head_len;
 811         else
 812                 new_head_len = old->head_len;
 813
 814         /* new or old tail? */
 815         if (params->tail || !old)
 816                 /* params->tail_len will be zero for !params->tail */
 817                 new_tail_len = params->tail_len;
 818         else
 819                 new_tail_len = old->tail_len;
 820
 821         size = sizeof(*new) + new_head_len + new_tail_len;
 822
 823         new = kzalloc(size, GFP_KERNEL);
 824         if (!new)
 825                 return -ENOMEM;
 826
 827         /* start filling the new info now */
 828
 829         /*
 830          * pointers go into the block we allocated,
 831          * memory is | beacon_data | head | tail |
 832          */
 833         new->head = ((u8 *) new) + sizeof(*new);
 834         new->tail = new->head + new_head_len;
 835         new->head_len = new_head_len;
 836         new->tail_len = new_tail_len;
 837
 838         /* copy in head */
 839         if (params->head)
 840                 memcpy(new->head, params->head, new_head_len);
 841         else
 842                 memcpy(new->head, old->head, new_head_len);
 843
 844         /* copy in optional tail */
 845         if (params->tail)
 846                 memcpy(new->tail, params->tail, new_tail_len);
 847         else
 848                 if (old)
 849                         memcpy(new->tail, old->tail, new_tail_len);
 850
 851         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 852                                        params->probe_resp_len);
 853         if (err < 0)
 854                 return err;
 855         if (err == 0)
 856                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 857
 858         rcu_assign_pointer(sdata->u.ap.beacon, new);
 859
 860         if (old)
 861                 kfree_rcu(old, rcu_head);
 862
 863         return changed;
 864 }
 865
 866 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 867                               struct cfg80211_ap_settings *params)
 868 {
 869         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 870         struct beacon_data *old;
 871         struct ieee80211_sub_if_data *vlan;
 872         u32 changed = BSS_CHANGED_BEACON_INT |
 873                       BSS_CHANGED_BEACON_ENABLED |
 874                       BSS_CHANGED_BEACON |
 875                       BSS_CHANGED_SSID;
 876         int err;
 877
 878         old = rtnl_dereference(sdata->u.ap.beacon);
 879         if (old)
 880                 return -EALREADY;
 881
 882         err = ieee80211_set_channel(wiphy, dev, params->channel,
 883                                     params->channel_type);
 884         if (err)
 885                 return err;
 886
 887         /*
 888          * Apply control port protocol, this allows us to
 889          * not encrypt dynamic WEP control frames.
 890          */
 891         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 892         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 893         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 894                 vlan->control_port_protocol =
 895                         params->crypto.control_port_ethertype;
 896                 vlan->control_port_no_encrypt =
 897                         params->crypto.control_port_no_encrypt;
 898         }
 899
 900         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 901         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 902
 903         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 904         if (params->ssid_len)
 905                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 906                        params->ssid_len);
 907         sdata->vif.bss_conf.hidden_ssid =
 908                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 909
 910         err = ieee80211_assign_beacon(sdata, &params->beacon);
 911         if (err < 0)
 912                 return err;
 913         changed |= err;
 914
 915         ieee80211_bss_info_change_notify(sdata, changed);
 916
 917         netif_carrier_on(dev);
 918         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 919                 netif_carrier_on(vlan->dev);
 920
 921         return 0;
 922 }
 923
 924 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 925                                    struct cfg80211_beacon_data *params)
 926 {
 927         struct ieee80211_sub_if_data *sdata;
 928         struct beacon_data *old;
 929         int err;
 930
 931         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 932
 933         old = rtnl_dereference(sdata->u.ap.beacon);
 934         if (!old)
 935                 return -ENOENT;
 936
 937         err = ieee80211_assign_beacon(sdata, params);
 938         if (err < 0)
 939                 return err;
 940         ieee80211_bss_info_change_notify(sdata, err);
 941         return 0;
 942 }
 943
 944 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 945 {
 946         struct ieee80211_sub_if_data *sdata, *vlan;
 947         struct beacon_data *old;
 948
 949         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 950
 951         old = rtnl_dereference(sdata->u.ap.beacon);
 952         if (!old)
 953                 return -ENOENT;
 954
 955         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 956                 netif_carrier_off(vlan->dev);
 957         netif_carrier_off(dev);
 958
 959         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 960
 961         kfree_rcu(old, rcu_head);
 962
 963         sta_info_flush(sdata->local, sdata);
 964         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 965
 966         return 0;
 967 }
 968
 969 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 970 struct iapp_layer2_update {
 971         u8 da[ETH_ALEN];        /* broadcast */
 972         u8 sa[ETH_ALEN];        /* STA addr */
 973         __be16 len;             /* 6 */
 974         u8 dsap;                /* 0 */
 975         u8 ssap;                /* 0 */
 976         u8 control;
 977         u8 xid_info[3];
 978 } __packed;
 979
 980 static void ieee80211_send_layer2_update(struct sta_info *sta)
 981 {
 982         struct iapp_layer2_update *msg;
 983         struct sk_buff *skb;
 984
 985         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 986          * bridge devices */
 987
 988         skb = dev_alloc_skb(sizeof(*msg));
 989         if (!skb)
 990                 return;
 991         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 992
 993         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 994          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 995
 996         eth_broadcast_addr(msg->da);
 997         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 998         msg->len = htons(6);
 999         msg->dsap = 0;
1000         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1001         msg->control = 0xaf;    /* XID response lsb.1111F101.
1002                                  * F=0 (no poll command; unsolicited frame) */
1003         msg->xid_info[0] = 0x81;        /* XID format identifier */
1004         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1005         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1006
1007         skb->dev = sta->sdata->dev;
1008         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1009         memset(skb->cb, 0, sizeof(skb->cb));
1010         netif_rx_ni(skb);
1011 }
1012
1013 static int sta_apply_parameters(struct ieee80211_local *local,
1014                                 struct sta_info *sta,
1015                                 struct station_parameters *params)
1016 {
1017         int ret = 0;
1018         u32 rates;
1019         int i, j;
1020         struct ieee80211_supported_band *sband;
1021         struct ieee80211_sub_if_data *sdata = sta->sdata;
1022         u32 mask, set;
1023
1024         sband = local->hw.wiphy->bands[local->oper_channel->band];
1025
1026         mask = params->sta_flags_mask;
1027         set = params->sta_flags_set;
1028
1029         /*
1030          * In mesh mode, we can clear AUTHENTICATED flag but must
1031          * also make ASSOCIATED follow appropriately for the driver
1032          * API. See also below, after AUTHORIZED changes.
1033          */
1034         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1035                 /* cfg80211 should not allow this in non-mesh modes */
1036                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1037                         return -EINVAL;
1038
1039                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1040                     !test_sta_flag(sta, WLAN_STA_AUTH)) {
1041                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1042                         if (ret)
1043                                 return ret;
1044                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1045                         if (ret)
1046                                 return ret;
1047                 }
1048         }
1049
1050         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1051                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1052                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1053                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1054                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1055                 if (ret)
1056                         return ret;
1057         }
1058
1059         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1060                 /* cfg80211 should not allow this in non-mesh modes */
1061                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1062                         return -EINVAL;
1063
1064                 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1065                     test_sta_flag(sta, WLAN_STA_AUTH)) {
1066                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1067                         if (ret)
1068                                 return ret;
1069                         ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1070                         if (ret)
1071                                 return ret;
1072                 }
1073         }
1074
1075
1076         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1077                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1078                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1079                 else
1080                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1081         }
1082
1083         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1084                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1085                         set_sta_flag(sta, WLAN_STA_WME);
1086                         sta->sta.wme = true;
1087                 } else {
1088                         clear_sta_flag(sta, WLAN_STA_WME);
1089                         sta->sta.wme = false;
1090                 }
1091         }
1092
1093         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1094                 if (set & BIT(NL80211_STA_FLAG_MFP))
1095                         set_sta_flag(sta, WLAN_STA_MFP);
1096                 else
1097                         clear_sta_flag(sta, WLAN_STA_MFP);
1098         }
1099
1100         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1101                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1102                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1103                 else
1104                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1105         }
1106
1107         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1108                 sta->sta.uapsd_queues = params->uapsd_queues;
1109                 sta->sta.max_sp = params->max_sp;
1110         }
1111
1112         /*
1113          * cfg80211 validates this (1-2007) and allows setting the AID
1114          * only when creating a new station entry
1115          */
1116         if (params->aid)
1117                 sta->sta.aid = params->aid;
1118
1119         /*
1120          * FIXME: updating the following information is racy when this
1121          *        function is called from ieee80211_change_station().
1122          *        However, all this information should be static so
1123          *        maybe we should just reject attemps to change it.
1124          */
1125
1126         if (params->listen_interval >= 0)
1127                 sta->listen_interval = params->listen_interval;
1128
1129         if (params->supported_rates) {
1130                 rates = 0;
1131
1132                 for (i = 0; i < params->supported_rates_len; i++) {
1133                         int rate = (params->supported_rates[i] & 0x7f) * 5;
1134                         for (j = 0; j < sband->n_bitrates; j++) {
1135                                 if (sband->bitrates[j].bitrate == rate)
1136                                         rates |= BIT(j);
1137                         }
1138                 }
1139                 sta->sta.supp_rates[local->oper_channel->band] = rates;
1140         }
1141
1142         if (params->ht_capa)
1143                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1144                                                   params->ht_capa,
1145                                                   &sta->sta.ht_cap);
1146
1147         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1148 #ifdef CONFIG_MAC80211_MESH
1149                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
1150                         switch (params->plink_state) {
1151                         case NL80211_PLINK_LISTEN:
1152                         case NL80211_PLINK_ESTAB:
1153                         case NL80211_PLINK_BLOCKED:
1154                                 sta->plink_state = params->plink_state;
1155                                 break;
1156                         default:
1157                                 /*  nothing  */
1158                                 break;
1159                         }
1160                 else
1161                         switch (params->plink_action) {
1162                         case PLINK_ACTION_OPEN:
1163                                 mesh_plink_open(sta);
1164                                 break;
1165                         case PLINK_ACTION_BLOCK:
1166                                 mesh_plink_block(sta);
1167                                 break;
1168                         }
1169 #endif
1170         }
1171
1172         return 0;
1173 }
1174
1175 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1176                                  u8 *mac, struct station_parameters *params)
1177 {
1178         struct ieee80211_local *local = wiphy_priv(wiphy);
1179         struct sta_info *sta;
1180         struct ieee80211_sub_if_data *sdata;
1181         int err;
1182         int layer2_update;
1183
1184         if (params->vlan) {
1185                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1186
1187                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1188                     sdata->vif.type != NL80211_IFTYPE_AP)
1189                         return -EINVAL;
1190         } else
1191                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1192
1193         if (ether_addr_equal(mac, sdata->vif.addr))
1194                 return -EINVAL;
1195
1196         if (is_multicast_ether_addr(mac))
1197                 return -EINVAL;
1198
1199         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1200         if (!sta)
1201                 return -ENOMEM;
1202
1203         sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1204         sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1205
1206         err = sta_apply_parameters(local, sta, params);
1207         if (err) {
1208                 sta_info_free(local, sta);
1209                 return err;
1210         }
1211
1212         /*
1213          * for TDLS, rate control should be initialized only when supported
1214          * rates are known.
1215          */
1216         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1217                 rate_control_rate_init(sta);
1218
1219         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1220                 sdata->vif.type == NL80211_IFTYPE_AP;
1221
1222         err = sta_info_insert_rcu(sta);
1223         if (err) {
1224                 rcu_read_unlock();
1225                 return err;
1226         }
1227
1228         if (layer2_update)
1229                 ieee80211_send_layer2_update(sta);
1230
1231         rcu_read_unlock();
1232
1233         return 0;
1234 }
1235
1236 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1237                                  u8 *mac)
1238 {
1239         struct ieee80211_local *local = wiphy_priv(wiphy);
1240         struct ieee80211_sub_if_data *sdata;
1241
1242         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1243
1244         if (mac)
1245                 return sta_info_destroy_addr_bss(sdata, mac);
1246
1247         sta_info_flush(local, sdata);
1248         return 0;
1249 }
1250
1251 static int ieee80211_change_station(struct wiphy *wiphy,
1252                                     struct net_device *dev,
1253                                     u8 *mac,
1254                                     struct station_parameters *params)
1255 {
1256         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1257         struct ieee80211_local *local = wiphy_priv(wiphy);
1258         struct sta_info *sta;
1259         struct ieee80211_sub_if_data *vlansdata;
1260         int err;
1261
1262         mutex_lock(&local->sta_mtx);
1263
1264         sta = sta_info_get_bss(sdata, mac);
1265         if (!sta) {
1266                 mutex_unlock(&local->sta_mtx);
1267                 return -ENOENT;
1268         }
1269
1270         /* in station mode, supported rates are only valid with TDLS */
1271         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1272             params->supported_rates &&
1273             !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1274                 mutex_unlock(&local->sta_mtx);
1275                 return -EINVAL;
1276         }
1277
1278         if (params->vlan && params->vlan != sta->sdata->dev) {
1279                 bool prev_4addr = false;
1280                 bool new_4addr = false;
1281
1282                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1283
1284                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1285                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
1286                         mutex_unlock(&local->sta_mtx);
1287                         return -EINVAL;
1288                 }
1289
1290                 if (params->vlan->ieee80211_ptr->use_4addr) {
1291                         if (vlansdata->u.vlan.sta) {
1292                                 mutex_unlock(&local->sta_mtx);
1293                                 return -EBUSY;
1294                         }
1295
1296                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1297                         new_4addr = true;
1298                 }
1299
1300                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1301                     sta->sdata->u.vlan.sta) {
1302                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1303                         prev_4addr = true;
1304                 }
1305
1306                 sta->sdata = vlansdata;
1307
1308                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1309                     prev_4addr != new_4addr) {
1310                         if (new_4addr)
1311                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1312                         else
1313                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1314                 }
1315
1316                 ieee80211_send_layer2_update(sta);
1317         }
1318
1319         err = sta_apply_parameters(local, sta, params);
1320         if (err) {
1321                 mutex_unlock(&local->sta_mtx);
1322                 return err;
1323         }
1324
1325         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1326                 rate_control_rate_init(sta);
1327
1328         mutex_unlock(&local->sta_mtx);
1329
1330         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1331             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1332                 ieee80211_recalc_ps(local, -1);
1333                 ieee80211_recalc_ps_vif(sdata);
1334         }
1335         return 0;
1336 }
1337
1338 #ifdef CONFIG_MAC80211_MESH
1339 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1340                                  u8 *dst, u8 *next_hop)
1341 {
1342         struct ieee80211_sub_if_data *sdata;
1343         struct mesh_path *mpath;
1344         struct sta_info *sta;
1345         int err;
1346
1347         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1348
1349         rcu_read_lock();
1350         sta = sta_info_get(sdata, next_hop);
1351         if (!sta) {
1352                 rcu_read_unlock();
1353                 return -ENOENT;
1354         }
1355
1356         err = mesh_path_add(dst, sdata);
1357         if (err) {
1358                 rcu_read_unlock();
1359                 return err;
1360         }
1361
1362         mpath = mesh_path_lookup(dst, sdata);
1363         if (!mpath) {
1364                 rcu_read_unlock();
1365                 return -ENXIO;
1366         }
1367         mesh_path_fix_nexthop(mpath, sta);
1368
1369         rcu_read_unlock();
1370         return 0;
1371 }
1372
1373 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1374                                  u8 *dst)
1375 {
1376         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1377
1378         if (dst)
1379                 return mesh_path_del(dst, sdata);
1380
1381         mesh_path_flush_by_iface(sdata);
1382         return 0;
1383 }
1384
1385 static int ieee80211_change_mpath(struct wiphy *wiphy,
1386                                     struct net_device *dev,
1387                                     u8 *dst, u8 *next_hop)
1388 {
1389         struct ieee80211_sub_if_data *sdata;
1390         struct mesh_path *mpath;
1391         struct sta_info *sta;
1392
1393         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1394
1395         rcu_read_lock();
1396
1397         sta = sta_info_get(sdata, next_hop);
1398         if (!sta) {
1399                 rcu_read_unlock();
1400                 return -ENOENT;
1401         }
1402
1403         mpath = mesh_path_lookup(dst, sdata);
1404         if (!mpath) {
1405                 rcu_read_unlock();
1406                 return -ENOENT;
1407         }
1408
1409         mesh_path_fix_nexthop(mpath, sta);
1410
1411         rcu_read_unlock();
1412         return 0;
1413 }
1414
1415 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1416                             struct mpath_info *pinfo)
1417 {
1418         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1419
1420         if (next_hop_sta)
1421                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1422         else
1423                 memset(next_hop, 0, ETH_ALEN);
1424
1425         memset(pinfo, 0, sizeof(*pinfo));
1426
1427         pinfo->generation = mesh_paths_generation;
1428
1429         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1430                         MPATH_INFO_SN |
1431                         MPATH_INFO_METRIC |
1432                         MPATH_INFO_EXPTIME |
1433                         MPATH_INFO_DISCOVERY_TIMEOUT |
1434                         MPATH_INFO_DISCOVERY_RETRIES |
1435                         MPATH_INFO_FLAGS;
1436
1437         pinfo->frame_qlen = mpath->frame_queue.qlen;
1438         pinfo->sn = mpath->sn;
1439         pinfo->metric = mpath->metric;
1440         if (time_before(jiffies, mpath->exp_time))
1441                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1442         pinfo->discovery_timeout =
1443                         jiffies_to_msecs(mpath->discovery_timeout);
1444         pinfo->discovery_retries = mpath->discovery_retries;
1445         if (mpath->flags & MESH_PATH_ACTIVE)
1446                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1447         if (mpath->flags & MESH_PATH_RESOLVING)
1448                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1449         if (mpath->flags & MESH_PATH_SN_VALID)
1450                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1451         if (mpath->flags & MESH_PATH_FIXED)
1452                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1453         if (mpath->flags & MESH_PATH_RESOLVED)
1454                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1455 }
1456
1457 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1458                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1459
1460 {
1461         struct ieee80211_sub_if_data *sdata;
1462         struct mesh_path *mpath;
1463
1464         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1465
1466         rcu_read_lock();
1467         mpath = mesh_path_lookup(dst, sdata);
1468         if (!mpath) {
1469                 rcu_read_unlock();
1470                 return -ENOENT;
1471         }
1472         memcpy(dst, mpath->dst, ETH_ALEN);
1473         mpath_set_pinfo(mpath, next_hop, pinfo);
1474         rcu_read_unlock();
1475         return 0;
1476 }
1477
1478 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1479                                  int idx, u8 *dst, u8 *next_hop,
1480                                  struct mpath_info *pinfo)
1481 {
1482         struct ieee80211_sub_if_data *sdata;
1483         struct mesh_path *mpath;
1484
1485         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1486
1487         rcu_read_lock();
1488         mpath = mesh_path_lookup_by_idx(idx, sdata);
1489         if (!mpath) {
1490                 rcu_read_unlock();
1491                 return -ENOENT;
1492         }
1493         memcpy(dst, mpath->dst, ETH_ALEN);
1494         mpath_set_pinfo(mpath, next_hop, pinfo);
1495         rcu_read_unlock();
1496         return 0;
1497 }
1498
1499 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1500                                 struct net_device *dev,
1501                                 struct mesh_config *conf)
1502 {
1503         struct ieee80211_sub_if_data *sdata;
1504         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1505
1506         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1507         return 0;
1508 }
1509
1510 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1511 {
1512         return (mask >> (parm-1)) & 0x1;
1513 }
1514
1515 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1516                 const struct mesh_setup *setup)
1517 {
1518         u8 *new_ie;
1519         const u8 *old_ie;
1520         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1521                                         struct ieee80211_sub_if_data, u.mesh);
1522
1523         /* allocate information elements */
1524         new_ie = NULL;
1525         old_ie = ifmsh->ie;
1526
1527         if (setup->ie_len) {
1528                 new_ie = kmemdup(setup->ie, setup->ie_len,
1529                                 GFP_KERNEL);
1530                 if (!new_ie)
1531                         return -ENOMEM;
1532         }
1533         ifmsh->ie_len = setup->ie_len;
1534         ifmsh->ie = new_ie;
1535         kfree(old_ie);
1536
1537         /* now copy the rest of the setup parameters */
1538         ifmsh->mesh_id_len = setup->mesh_id_len;
1539         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1540         ifmsh->mesh_sp_id = setup->sync_method;
1541         ifmsh->mesh_pp_id = setup->path_sel_proto;
1542         ifmsh->mesh_pm_id = setup->path_metric;
1543         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1544         if (setup->is_authenticated)
1545                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1546         if (setup->is_secure)
1547                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1548
1549         /* mcast rate setting in Mesh Node */
1550         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1551                                                 sizeof(setup->mcast_rate));
1552
1553         return 0;
1554 }
1555
1556 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1557                                         struct net_device *dev, u32 mask,
1558                                         const struct mesh_config *nconf)
1559 {
1560         struct mesh_config *conf;
1561         struct ieee80211_sub_if_data *sdata;
1562         struct ieee80211_if_mesh *ifmsh;
1563
1564         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1565         ifmsh = &sdata->u.mesh;
1566
1567         /* Set the config options which we are interested in setting */
1568         conf = &(sdata->u.mesh.mshcfg);
1569         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1570                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1571         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1572                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1573         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1574                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1575         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1576                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1577         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1578                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1579         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1580                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1581         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1582                 conf->element_ttl = nconf->element_ttl;
1583         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1584                 conf->auto_open_plinks = nconf->auto_open_plinks;
1585         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1586                 conf->dot11MeshNbrOffsetMaxNeighbor =
1587                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1588         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1589                 conf->dot11MeshHWMPmaxPREQretries =
1590                         nconf->dot11MeshHWMPmaxPREQretries;
1591         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1592                 conf->path_refresh_time = nconf->path_refresh_time;
1593         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1594                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1595         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1596                 conf->dot11MeshHWMPactivePathTimeout =
1597                         nconf->dot11MeshHWMPactivePathTimeout;
1598         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1599                 conf->dot11MeshHWMPpreqMinInterval =
1600                         nconf->dot11MeshHWMPpreqMinInterval;
1601         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1602                 conf->dot11MeshHWMPperrMinInterval =
1603                         nconf->dot11MeshHWMPperrMinInterval;
1604         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1605                            mask))
1606                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1607                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1608         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1609                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1610                 ieee80211_mesh_root_setup(ifmsh);
1611         }
1612         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1613                 /* our current gate announcement implementation rides on root
1614                  * announcements, so require this ifmsh to also be a root node
1615                  * */
1616                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1617                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1618                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1619                         ieee80211_mesh_root_setup(ifmsh);
1620                 }
1621                 conf->dot11MeshGateAnnouncementProtocol =
1622                         nconf->dot11MeshGateAnnouncementProtocol;
1623         }
1624         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1625                 conf->dot11MeshHWMPRannInterval =
1626                         nconf->dot11MeshHWMPRannInterval;
1627         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1628                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1629         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1630                 /* our RSSI threshold implementation is supported only for
1631                  * devices that report signal in dBm.
1632                  */
1633                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1634                         return -ENOTSUPP;
1635                 conf->rssi_threshold = nconf->rssi_threshold;
1636         }
1637         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1638                 conf->ht_opmode = nconf->ht_opmode;
1639                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1640                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1641         }
1642         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1643                 conf->dot11MeshHWMPactivePathToRootTimeout =
1644                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1645         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1646                 conf->dot11MeshHWMProotInterval =
1647                         nconf->dot11MeshHWMProotInterval;
1648         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1649                 conf->dot11MeshHWMPconfirmationInterval =
1650                         nconf->dot11MeshHWMPconfirmationInterval;
1651         return 0;
1652 }
1653
1654 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1655                                const struct mesh_config *conf,
1656                                const struct mesh_setup *setup)
1657 {
1658         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1659         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1660         int err;
1661
1662         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1663         err = copy_mesh_setup(ifmsh, setup);
1664         if (err)
1665                 return err;
1666
1667         err = ieee80211_set_channel(wiphy, dev, setup->channel,
1668                                     setup->channel_type);
1669         if (err)
1670                 return err;
1671
1672         ieee80211_start_mesh(sdata);
1673
1674         return 0;
1675 }
1676
1677 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1678 {
1679         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1680
1681         ieee80211_stop_mesh(sdata);
1682
1683         return 0;
1684 }
1685 #endif
1686
1687 static int ieee80211_change_bss(struct wiphy *wiphy,
1688                                 struct net_device *dev,
1689                                 struct bss_parameters *params)
1690 {
1691         struct ieee80211_sub_if_data *sdata;
1692         u32 changed = 0;
1693
1694         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1695
1696         if (params->use_cts_prot >= 0) {
1697                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1698                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1699         }
1700         if (params->use_short_preamble >= 0) {
1701                 sdata->vif.bss_conf.use_short_preamble =
1702                         params->use_short_preamble;
1703                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1704         }
1705
1706         if (!sdata->vif.bss_conf.use_short_slot &&
1707             sdata->local->oper_channel->band == IEEE80211_BAND_5GHZ) {
1708                 sdata->vif.bss_conf.use_short_slot = true;
1709                 changed |= BSS_CHANGED_ERP_SLOT;
1710         }
1711
1712         if (params->use_short_slot_time >= 0) {
1713                 sdata->vif.bss_conf.use_short_slot =
1714                         params->use_short_slot_time;
1715                 changed |= BSS_CHANGED_ERP_SLOT;
1716         }
1717
1718         if (params->basic_rates) {
1719                 int i, j;
1720                 u32 rates = 0;
1721                 struct ieee80211_local *local = wiphy_priv(wiphy);
1722                 struct ieee80211_supported_band *sband =
1723                         wiphy->bands[local->oper_channel->band];
1724
1725                 for (i = 0; i < params->basic_rates_len; i++) {
1726                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1727                         for (j = 0; j < sband->n_bitrates; j++) {
1728                                 if (sband->bitrates[j].bitrate == rate)
1729                                         rates |= BIT(j);
1730                         }
1731                 }
1732                 sdata->vif.bss_conf.basic_rates = rates;
1733                 changed |= BSS_CHANGED_BASIC_RATES;
1734         }
1735
1736         if (params->ap_isolate >= 0) {
1737                 if (params->ap_isolate)
1738                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1739                 else
1740                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1741         }
1742
1743         if (params->ht_opmode >= 0) {
1744                 sdata->vif.bss_conf.ht_operation_mode =
1745                         (u16) params->ht_opmode;
1746                 changed |= BSS_CHANGED_HT;
1747         }
1748
1749         ieee80211_bss_info_change_notify(sdata, changed);
1750
1751         return 0;
1752 }
1753
1754 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1755                                     struct net_device *dev,
1756                                     struct ieee80211_txq_params *params)
1757 {
1758         struct ieee80211_local *local = wiphy_priv(wiphy);
1759         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1760         struct ieee80211_tx_queue_params p;
1761
1762         if (!local->ops->conf_tx)
1763                 return -EOPNOTSUPP;
1764
1765         if (local->hw.queues < IEEE80211_NUM_ACS)
1766                 return -EOPNOTSUPP;
1767
1768         memset(&p, 0, sizeof(p));
1769         p.aifs = params->aifs;
1770         p.cw_max = params->cwmax;
1771         p.cw_min = params->cwmin;
1772         p.txop = params->txop;
1773
1774         /*
1775          * Setting tx queue params disables u-apsd because it's only
1776          * called in master mode.
1777          */
1778         p.uapsd = false;
1779
1780         sdata->tx_conf[params->ac] = p;
1781         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1782                 wiphy_debug(local->hw.wiphy,
1783                             "failed to set TX queue parameters for AC %d\n",
1784                             params->ac);
1785                 return -EINVAL;
1786         }
1787
1788         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1789
1790         return 0;
1791 }
1792
1793 #ifdef CONFIG_PM
1794 static int ieee80211_suspend(struct wiphy *wiphy,
1795                              struct cfg80211_wowlan *wowlan)
1796 {
1797         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1798 }
1799
1800 static int ieee80211_resume(struct wiphy *wiphy)
1801 {
1802         return __ieee80211_resume(wiphy_priv(wiphy));
1803 }
1804 #else
1805 #define ieee80211_suspend NULL
1806 #define ieee80211_resume NULL
1807 #endif
1808
1809 static int ieee80211_scan(struct wiphy *wiphy,
1810                           struct cfg80211_scan_request *req)
1811 {
1812         struct ieee80211_sub_if_data *sdata;
1813
1814         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1815
1816         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1817         case NL80211_IFTYPE_STATION:
1818         case NL80211_IFTYPE_ADHOC:
1819         case NL80211_IFTYPE_MESH_POINT:
1820         case NL80211_IFTYPE_P2P_CLIENT:
1821         case NL80211_IFTYPE_P2P_DEVICE:
1822                 break;
1823         case NL80211_IFTYPE_P2P_GO:
1824                 if (sdata->local->ops->hw_scan)
1825                         break;
1826                 /*
1827                  * FIXME: implement NoA while scanning in software,
1828                  * for now fall through to allow scanning only when
1829                  * beaconing hasn't been configured yet
1830                  */
1831         case NL80211_IFTYPE_AP:
1832                 if (sdata->u.ap.beacon)
1833                         return -EOPNOTSUPP;
1834                 break;
1835         default:
1836                 return -EOPNOTSUPP;
1837         }
1838
1839         return ieee80211_request_scan(sdata, req);
1840 }
1841
1842 static int
1843 ieee80211_sched_scan_start(struct wiphy *wiphy,
1844                            struct net_device *dev,
1845                            struct cfg80211_sched_scan_request *req)
1846 {
1847         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1848
1849         if (!sdata->local->ops->sched_scan_start)
1850                 return -EOPNOTSUPP;
1851
1852         return ieee80211_request_sched_scan_start(sdata, req);
1853 }
1854
1855 static int
1856 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1857 {
1858         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1859
1860         if (!sdata->local->ops->sched_scan_stop)
1861                 return -EOPNOTSUPP;
1862
1863         return ieee80211_request_sched_scan_stop(sdata);
1864 }
1865
1866 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1867                           struct cfg80211_auth_request *req)
1868 {
1869         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1870 }
1871
1872 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1873                            struct cfg80211_assoc_request *req)
1874 {
1875         struct ieee80211_local *local = wiphy_priv(wiphy);
1876         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1877
1878         switch (ieee80211_get_channel_mode(local, sdata)) {
1879         case CHAN_MODE_HOPPING:
1880                 return -EBUSY;
1881         case CHAN_MODE_FIXED:
1882                 if (local->oper_channel == req->bss->channel)
1883                         break;
1884                 return -EBUSY;
1885         case CHAN_MODE_UNDEFINED:
1886                 break;
1887         }
1888
1889         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1890 }
1891
1892 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1893                             struct cfg80211_deauth_request *req)
1894 {
1895         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1896 }
1897
1898 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1899                               struct cfg80211_disassoc_request *req)
1900 {
1901         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1902 }
1903
1904 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1905                                struct cfg80211_ibss_params *params)
1906 {
1907         struct ieee80211_local *local = wiphy_priv(wiphy);
1908         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1909
1910         switch (ieee80211_get_channel_mode(local, sdata)) {
1911         case CHAN_MODE_HOPPING:
1912                 return -EBUSY;
1913         case CHAN_MODE_FIXED:
1914                 if (!params->channel_fixed)
1915                         return -EBUSY;
1916                 if (local->oper_channel == params->channel)
1917                         break;
1918                 return -EBUSY;
1919         case CHAN_MODE_UNDEFINED:
1920                 break;
1921         }
1922
1923         return ieee80211_ibss_join(sdata, params);
1924 }
1925
1926 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1927 {
1928         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1929
1930         return ieee80211_ibss_leave(sdata);
1931 }
1932
1933 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1934 {
1935         struct ieee80211_local *local = wiphy_priv(wiphy);
1936         int err;
1937
1938         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1939                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1940
1941                 if (err)
1942                         return err;
1943         }
1944
1945         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1946                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1947
1948                 if (err)
1949                         return err;
1950         }
1951
1952         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1953                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1954
1955                 if (err)
1956                         return err;
1957         }
1958
1959         if (changed & WIPHY_PARAM_RETRY_SHORT)
1960                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1961         if (changed & WIPHY_PARAM_RETRY_LONG)
1962                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1963         if (changed &
1964             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1965                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1966
1967         return 0;
1968 }
1969
1970 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1971                                   enum nl80211_tx_power_setting type, int mbm)
1972 {
1973         struct ieee80211_local *local = wiphy_priv(wiphy);
1974         struct ieee80211_channel *chan = local->oper_channel;
1975         u32 changes = 0;
1976
1977         switch (type) {
1978         case NL80211_TX_POWER_AUTOMATIC:
1979                 local->user_power_level = -1;
1980                 break;
1981         case NL80211_TX_POWER_LIMITED:
1982                 if (mbm < 0 || (mbm % 100))
1983                         return -EOPNOTSUPP;
1984                 local->user_power_level = MBM_TO_DBM(mbm);
1985                 break;
1986         case NL80211_TX_POWER_FIXED:
1987                 if (mbm < 0 || (mbm % 100))
1988                         return -EOPNOTSUPP;
1989                 /* TODO: move to cfg80211 when it knows the channel */
1990                 if (MBM_TO_DBM(mbm) > chan->max_power)
1991                         return -EINVAL;
1992                 local->user_power_level = MBM_TO_DBM(mbm);
1993                 break;
1994         }
1995
1996         ieee80211_hw_config(local, changes);
1997
1998         return 0;
1999 }
2000
2001 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
2002 {
2003         struct ieee80211_local *local = wiphy_priv(wiphy);
2004
2005         *dbm = local->hw.conf.power_level;
2006
2007         return 0;
2008 }
2009
2010 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2011                                   const u8 *addr)
2012 {
2013         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2014
2015         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2016
2017         return 0;
2018 }
2019
2020 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2021 {
2022         struct ieee80211_local *local = wiphy_priv(wiphy);
2023
2024         drv_rfkill_poll(local);
2025 }
2026
2027 #ifdef CONFIG_NL80211_TESTMODE
2028 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2029 {
2030         struct ieee80211_local *local = wiphy_priv(wiphy);
2031
2032         if (!local->ops->testmode_cmd)
2033                 return -EOPNOTSUPP;
2034
2035         return local->ops->testmode_cmd(&local->hw, data, len);
2036 }
2037
2038 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2039                                    struct sk_buff *skb,
2040                                    struct netlink_callback *cb,
2041                                    void *data, int len)
2042 {
2043         struct ieee80211_local *local = wiphy_priv(wiphy);
2044
2045         if (!local->ops->testmode_dump)
2046                 return -EOPNOTSUPP;
2047
2048         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2049 }
2050 #endif
2051
2052 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2053                              enum ieee80211_smps_mode smps_mode)
2054 {
2055         const u8 *ap;
2056         enum ieee80211_smps_mode old_req;
2057         int err;
2058
2059         lockdep_assert_held(&sdata->u.mgd.mtx);
2060
2061         old_req = sdata->u.mgd.req_smps;
2062         sdata->u.mgd.req_smps = smps_mode;
2063
2064         if (old_req == smps_mode &&
2065             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2066                 return 0;
2067
2068         /*
2069          * If not associated, or current association is not an HT
2070          * association, there's no need to send an action frame.
2071          */
2072         if (!sdata->u.mgd.associated ||
2073             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
2074                 ieee80211_recalc_smps(sdata->local);
2075                 return 0;
2076         }
2077
2078         ap = sdata->u.mgd.associated->bssid;
2079
2080         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2081                 if (sdata->u.mgd.powersave)
2082                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2083                 else
2084                         smps_mode = IEEE80211_SMPS_OFF;
2085         }
2086
2087         /* send SM PS frame to AP */
2088         err = ieee80211_send_smps_action(sdata, smps_mode,
2089                                          ap, ap);
2090         if (err)
2091                 sdata->u.mgd.req_smps = old_req;
2092
2093         return err;
2094 }
2095
2096 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2097                                     bool enabled, int timeout)
2098 {
2099         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2100         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2101
2102         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2103                 return -EOPNOTSUPP;
2104
2105         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2106                 return -EOPNOTSUPP;
2107
2108         if (enabled == sdata->u.mgd.powersave &&
2109             timeout == local->dynamic_ps_forced_timeout)
2110                 return 0;
2111
2112         sdata->u.mgd.powersave = enabled;
2113         local->dynamic_ps_forced_timeout = timeout;
2114
2115         /* no change, but if automatic follow powersave */
2116         mutex_lock(&sdata->u.mgd.mtx);
2117         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2118         mutex_unlock(&sdata->u.mgd.mtx);
2119
2120         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2121                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2122
2123         ieee80211_recalc_ps(local, -1);
2124         ieee80211_recalc_ps_vif(sdata);
2125
2126         return 0;
2127 }
2128
2129 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2130                                          struct net_device *dev,
2131                                          s32 rssi_thold, u32 rssi_hyst)
2132 {
2133         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2134         struct ieee80211_vif *vif = &sdata->vif;
2135         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2136
2137         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2138             rssi_hyst == bss_conf->cqm_rssi_hyst)
2139                 return 0;
2140
2141         bss_conf->cqm_rssi_thold = rssi_thold;
2142         bss_conf->cqm_rssi_hyst = rssi_hyst;
2143
2144         /* tell the driver upon association, unless already associated */
2145         if (sdata->u.mgd.associated &&
2146             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2147                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2148
2149         return 0;
2150 }
2151
2152 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2153                                       struct net_device *dev,
2154                                       const u8 *addr,
2155                                       const struct cfg80211_bitrate_mask *mask)
2156 {
2157         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2158         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2159         int i, ret;
2160
2161         if (!ieee80211_sdata_running(sdata))
2162                 return -ENETDOWN;
2163
2164         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2165                 ret = drv_set_bitrate_mask(local, sdata, mask);
2166                 if (ret)
2167                         return ret;
2168         }
2169
2170         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2171                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2172                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2173                        sizeof(mask->control[i].mcs));
2174         }
2175
2176         return 0;
2177 }
2178
2179 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2180                                     struct ieee80211_sub_if_data *sdata,
2181                                     struct ieee80211_channel *channel,
2182                                     enum nl80211_channel_type channel_type,
2183                                     unsigned int duration, u64 *cookie,
2184                                     struct sk_buff *txskb)
2185 {
2186         struct ieee80211_roc_work *roc, *tmp;
2187         bool queued = false;
2188         int ret;
2189
2190         lockdep_assert_held(&local->mtx);
2191
2192         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2193         if (!roc)
2194                 return -ENOMEM;
2195
2196         roc->chan = channel;
2197         roc->chan_type = channel_type;
2198         roc->duration = duration;
2199         roc->req_duration = duration;
2200         roc->frame = txskb;
2201         roc->mgmt_tx_cookie = (unsigned long)txskb;
2202         roc->sdata = sdata;
2203         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2204         INIT_LIST_HEAD(&roc->dependents);
2205
2206         /* if there's one pending or we're scanning, queue this one */
2207         if (!list_empty(&local->roc_list) || local->scanning)
2208                 goto out_check_combine;
2209
2210         /* if not HW assist, just queue & schedule work */
2211         if (!local->ops->remain_on_channel) {
2212                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2213                 goto out_queue;
2214         }
2215
2216         /* otherwise actually kick it off here (for error handling) */
2217
2218         /*
2219          * If the duration is zero, then the driver
2220          * wouldn't actually do anything. Set it to
2221          * 10 for now.
2222          *
2223          * TODO: cancel the off-channel operation
2224          *       when we get the SKB's TX status and
2225          *       the wait time was zero before.
2226          */
2227         if (!duration)
2228                 duration = 10;
2229
2230         ret = drv_remain_on_channel(local, channel, channel_type, duration);
2231         if (ret) {
2232                 kfree(roc);
2233                 return ret;
2234         }
2235
2236         roc->started = true;
2237         goto out_queue;
2238
2239  out_check_combine:
2240         list_for_each_entry(tmp, &local->roc_list, list) {
2241                 if (tmp->chan != channel || tmp->chan_type != channel_type)
2242                         continue;
2243
2244                 /*
2245                  * Extend this ROC if possible:
2246                  *
2247                  * If it hasn't started yet, just increase the duration
2248                  * and add the new one to the list of dependents.
2249                  */
2250                 if (!tmp->started) {
2251                         list_add_tail(&roc->list, &tmp->dependents);
2252                         tmp->duration = max(tmp->duration, roc->duration);
2253                         queued = true;
2254                         break;
2255                 }
2256
2257                 /* If it has already started, it's more difficult ... */
2258                 if (local->ops->remain_on_channel) {
2259                         unsigned long j = jiffies;
2260
2261                         /*
2262                          * In the offloaded ROC case, if it hasn't begun, add
2263                          * this new one to the dependent list to be handled
2264                          * when the the master one begins. If it has begun,
2265                          * check that there's still a minimum time left and
2266                          * if so, start this one, transmitting the frame, but
2267                          * add it to the list directly after this one with a
2268                          * a reduced time so we'll ask the driver to execute
2269                          * it right after finishing the previous one, in the
2270                          * hope that it'll also be executed right afterwards,
2271                          * effectively extending the old one.
2272                          * If there's no minimum time left, just add it to the
2273                          * normal list.
2274                          */
2275                         if (!tmp->hw_begun) {
2276                                 list_add_tail(&roc->list, &tmp->dependents);
2277                                 queued = true;
2278                                 break;
2279                         }
2280
2281                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2282                                         tmp->hw_start_time +
2283                                         msecs_to_jiffies(tmp->duration))) {
2284                                 int new_dur;
2285
2286                                 ieee80211_handle_roc_started(roc);
2287
2288                                 new_dur = roc->duration -
2289                                           jiffies_to_msecs(tmp->hw_start_time +
2290                                                            msecs_to_jiffies(
2291                                                                 tmp->duration) -
2292                                                            j);
2293
2294                                 if (new_dur > 0) {
2295                                         /* add right after tmp */
2296                                         list_add(&roc->list, &tmp->list);
2297                                 } else {
2298                                         list_add_tail(&roc->list,
2299                                                       &tmp->dependents);
2300                                 }
2301                                 queued = true;
2302                         }
2303                 } else if (del_timer_sync(&tmp->work.timer)) {
2304                         unsigned long new_end;
2305
2306                         /*
2307                          * In the software ROC case, cancel the timer, if
2308                          * that fails then the finish work is already
2309                          * queued/pending and thus we queue the new ROC
2310                          * normally, if that succeeds then we can extend
2311                          * the timer duration and TX the frame (if any.)
2312                          */
2313
2314                         list_add_tail(&roc->list, &tmp->dependents);
2315                         queued = true;
2316
2317                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2318
2319                         /* ok, it was started & we canceled timer */
2320                         if (time_after(new_end, tmp->work.timer.expires))
2321                                 mod_timer(&tmp->work.timer, new_end);
2322                         else
2323                                 add_timer(&tmp->work.timer);
2324
2325                         ieee80211_handle_roc_started(roc);
2326                 }
2327                 break;
2328         }
2329
2330  out_queue:
2331         if (!queued)
2332                 list_add_tail(&roc->list, &local->roc_list);
2333
2334         /*
2335          * cookie is either the roc (for normal roc)
2336          * or the SKB (for mgmt TX)
2337          */
2338         if (txskb)
2339                 *cookie = (unsigned long)txskb;
2340         else
2341                 *cookie = (unsigned long)roc;
2342
2343         return 0;
2344 }
2345
2346 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2347                                        struct wireless_dev *wdev,
2348                                        struct ieee80211_channel *chan,
2349                                        enum nl80211_channel_type channel_type,
2350                                        unsigned int duration,
2351                                        u64 *cookie)
2352 {
2353         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2354         struct ieee80211_local *local = sdata->local;
2355         int ret;
2356
2357         mutex_lock(&local->mtx);
2358         ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2359                                        duration, cookie, NULL);
2360         mutex_unlock(&local->mtx);
2361
2362         return ret;
2363 }
2364
2365 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2366                                 u64 cookie, bool mgmt_tx)
2367 {
2368         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2369         int ret;
2370
2371         mutex_lock(&local->mtx);
2372         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2373                 struct ieee80211_roc_work *dep, *tmp2;
2374
2375                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2376                         if (!mgmt_tx && (unsigned long)dep != cookie)
2377                                 continue;
2378                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2379                                 continue;
2380                         /* found dependent item -- just remove it */
2381                         list_del(&dep->list);
2382                         mutex_unlock(&local->mtx);
2383
2384                         ieee80211_roc_notify_destroy(dep);
2385                         return 0;
2386                 }
2387
2388                 if (!mgmt_tx && (unsigned long)roc != cookie)
2389                         continue;
2390                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2391                         continue;
2392
2393                 found = roc;
2394                 break;
2395         }
2396
2397         if (!found) {
2398                 mutex_unlock(&local->mtx);
2399                 return -ENOENT;
2400         }
2401
2402         /*
2403          * We found the item to cancel, so do that. Note that it
2404          * may have dependents, which we also cancel (and send
2405          * the expired signal for.) Not doing so would be quite
2406          * tricky here, but we may need to fix it later.
2407          */
2408
2409         if (local->ops->remain_on_channel) {
2410                 if (found->started) {
2411                         ret = drv_cancel_remain_on_channel(local);
2412                         if (WARN_ON_ONCE(ret)) {
2413                                 mutex_unlock(&local->mtx);
2414                                 return ret;
2415                         }
2416                 }
2417
2418                 list_del(&found->list);
2419
2420                 if (found->started)
2421                         ieee80211_start_next_roc(local);
2422                 mutex_unlock(&local->mtx);
2423
2424                 ieee80211_roc_notify_destroy(found);
2425         } else {
2426                 /* work may be pending so use it all the time */
2427                 found->abort = true;
2428                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2429
2430                 mutex_unlock(&local->mtx);
2431
2432                 /* work will clean up etc */
2433                 flush_delayed_work(&found->work);
2434         }
2435
2436         return 0;
2437 }
2438
2439 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2440                                               struct wireless_dev *wdev,
2441                                               u64 cookie)
2442 {
2443         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2444         struct ieee80211_local *local = sdata->local;
2445
2446         return ieee80211_cancel_roc(local, cookie, false);
2447 }
2448
2449 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2450                              struct ieee80211_channel *chan, bool offchan,
2451                              enum nl80211_channel_type channel_type,
2452                              bool channel_type_valid, unsigned int wait,
2453                              const u8 *buf, size_t len, bool no_cck,
2454                              bool dont_wait_for_ack, u64 *cookie)
2455 {
2456         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2457         struct ieee80211_local *local = sdata->local;
2458         struct sk_buff *skb;
2459         struct sta_info *sta;
2460         const struct ieee80211_mgmt *mgmt = (void *)buf;
2461         bool need_offchan = false;
2462         u32 flags;
2463         int ret;
2464
2465         if (dont_wait_for_ack)
2466                 flags = IEEE80211_TX_CTL_NO_ACK;
2467         else
2468                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2469                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2470
2471         if (no_cck)
2472                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2473
2474         switch (sdata->vif.type) {
2475         case NL80211_IFTYPE_ADHOC:
2476                 if (!sdata->vif.bss_conf.ibss_joined)
2477                         need_offchan = true;
2478                 /* fall through */
2479 #ifdef CONFIG_MAC80211_MESH
2480         case NL80211_IFTYPE_MESH_POINT:
2481                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2482                     !sdata->u.mesh.mesh_id_len)
2483                         need_offchan = true;
2484                 /* fall through */
2485 #endif
2486         case NL80211_IFTYPE_AP:
2487         case NL80211_IFTYPE_AP_VLAN:
2488         case NL80211_IFTYPE_P2P_GO:
2489                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2490                     !ieee80211_vif_is_mesh(&sdata->vif) &&
2491                     !rcu_access_pointer(sdata->bss->beacon))
2492                         need_offchan = true;
2493                 if (!ieee80211_is_action(mgmt->frame_control) ||
2494                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2495                         break;
2496                 rcu_read_lock();
2497                 sta = sta_info_get(sdata, mgmt->da);
2498                 rcu_read_unlock();
2499                 if (!sta)
2500                         return -ENOLINK;
2501                 break;
2502         case NL80211_IFTYPE_STATION:
2503         case NL80211_IFTYPE_P2P_CLIENT:
2504                 if (!sdata->u.mgd.associated)
2505                         need_offchan = true;
2506                 break;
2507         case NL80211_IFTYPE_P2P_DEVICE:
2508                 need_offchan = true;
2509                 break;
2510         default:
2511                 return -EOPNOTSUPP;
2512         }
2513
2514         mutex_lock(&local->mtx);
2515
2516         /* Check if the operating channel is the requested channel */
2517         if (!need_offchan) {
2518                 need_offchan = chan != local->oper_channel;
2519                 if (channel_type_valid &&
2520                     channel_type != local->_oper_channel_type)
2521                         need_offchan = true;
2522         }
2523
2524         if (need_offchan && !offchan) {
2525                 ret = -EBUSY;
2526                 goto out_unlock;
2527         }
2528
2529         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2530         if (!skb) {
2531                 ret = -ENOMEM;
2532                 goto out_unlock;
2533         }
2534         skb_reserve(skb, local->hw.extra_tx_headroom);
2535
2536         memcpy(skb_put(skb, len), buf, len);
2537
2538         IEEE80211_SKB_CB(skb)->flags = flags;
2539
2540         skb->dev = sdata->dev;
2541
2542         if (!need_offchan) {
2543                 *cookie = (unsigned long) skb;
2544                 ieee80211_tx_skb(sdata, skb);
2545                 ret = 0;
2546                 goto out_unlock;
2547         }
2548
2549         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2550         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2551                 IEEE80211_SKB_CB(skb)->hw_queue =
2552                         local->hw.offchannel_tx_hw_queue;
2553
2554         /* This will handle all kinds of coalescing and immediate TX */
2555         ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2556                                        wait, cookie, skb);
2557         if (ret)
2558                 kfree_skb(skb);
2559  out_unlock:
2560         mutex_unlock(&local->mtx);
2561         return ret;
2562 }
2563
2564 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2565                                          struct wireless_dev *wdev,
2566                                          u64 cookie)
2567 {
2568         struct ieee80211_local *local = wiphy_priv(wiphy);
2569
2570         return ieee80211_cancel_roc(local, cookie, true);
2571 }
2572
2573 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2574                                           struct wireless_dev *wdev,
2575                                           u16 frame_type, bool reg)
2576 {
2577         struct ieee80211_local *local = wiphy_priv(wiphy);
2578         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2579
2580         switch (frame_type) {
2581         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
2582                 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
2583                         struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2584
2585                         if (reg)
2586                                 ifibss->auth_frame_registrations++;
2587                         else
2588                                 ifibss->auth_frame_registrations--;
2589                 }
2590                 break;
2591         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2592                 if (reg)
2593                         local->probe_req_reg++;
2594                 else
2595                         local->probe_req_reg--;
2596
2597                 if (!local->open_count)
2598                         break;
2599
2600                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2601                 break;
2602         default:
2603                 break;
2604         }
2605 }
2606
2607 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2608 {
2609         struct ieee80211_local *local = wiphy_priv(wiphy);
2610
2611         if (local->started)
2612                 return -EOPNOTSUPP;
2613
2614         return drv_set_antenna(local, tx_ant, rx_ant);
2615 }
2616
2617 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2618 {
2619         struct ieee80211_local *local = wiphy_priv(wiphy);
2620
2621         return drv_get_antenna(local, tx_ant, rx_ant);
2622 }
2623
2624 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2625 {
2626         struct ieee80211_local *local = wiphy_priv(wiphy);
2627
2628         return drv_set_ringparam(local, tx, rx);
2629 }
2630
2631 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2632                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2633 {
2634         struct ieee80211_local *local = wiphy_priv(wiphy);
2635
2636         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2637 }
2638
2639 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2640                                     struct net_device *dev,
2641                                     struct cfg80211_gtk_rekey_data *data)
2642 {
2643         struct ieee80211_local *local = wiphy_priv(wiphy);
2644         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2645
2646         if (!local->ops->set_rekey_data)
2647                 return -EOPNOTSUPP;
2648
2649         drv_set_rekey_data(local, sdata, data);
2650
2651         return 0;
2652 }
2653
2654 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2655 {
2656         u8 *pos = (void *)skb_put(skb, 7);
2657
2658         *pos++ = WLAN_EID_EXT_CAPABILITY;
2659         *pos++ = 5; /* len */
2660         *pos++ = 0x0;
2661         *pos++ = 0x0;
2662         *pos++ = 0x0;
2663         *pos++ = 0x0;
2664         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2665 }
2666
2667 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2668 {
2669         struct ieee80211_local *local = sdata->local;
2670         u16 capab;
2671
2672         capab = 0;
2673         if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2674                 return capab;
2675
2676         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2677                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2678         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2679                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2680
2681         return capab;
2682 }
2683
2684 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2685                                        u8 *peer, u8 *bssid)
2686 {
2687         struct ieee80211_tdls_lnkie *lnkid;
2688
2689         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2690
2691         lnkid->ie_type = WLAN_EID_LINK_ID;
2692         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2693
2694         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2695         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2696         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2697 }
2698
2699 static int
2700 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2701                                u8 *peer, u8 action_code, u8 dialog_token,
2702                                u16 status_code, struct sk_buff *skb)
2703 {
2704         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2705         struct ieee80211_local *local = sdata->local;
2706         struct ieee80211_tdls_data *tf;
2707
2708         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2709
2710         memcpy(tf->da, peer, ETH_ALEN);
2711         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2712         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2713         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2714
2715         switch (action_code) {
2716         case WLAN_TDLS_SETUP_REQUEST:
2717                 tf->category = WLAN_CATEGORY_TDLS;
2718                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2719
2720                 skb_put(skb, sizeof(tf->u.setup_req));
2721                 tf->u.setup_req.dialog_token = dialog_token;
2722                 tf->u.setup_req.capability =
2723                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2724
2725                 ieee80211_add_srates_ie(sdata, skb, false,
2726                                         local->oper_channel->band);
2727                 ieee80211_add_ext_srates_ie(sdata, skb, false,
2728                                             local->oper_channel->band);
2729                 ieee80211_tdls_add_ext_capab(skb);
2730                 break;
2731         case WLAN_TDLS_SETUP_RESPONSE:
2732                 tf->category = WLAN_CATEGORY_TDLS;
2733                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2734
2735                 skb_put(skb, sizeof(tf->u.setup_resp));
2736                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2737                 tf->u.setup_resp.dialog_token = dialog_token;
2738                 tf->u.setup_resp.capability =
2739                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2740
2741                 ieee80211_add_srates_ie(sdata, skb, false,
2742                                         local->oper_channel->band);
2743                 ieee80211_add_ext_srates_ie(sdata, skb, false,
2744                                             local->oper_channel->band);
2745                 ieee80211_tdls_add_ext_capab(skb);
2746                 break;
2747         case WLAN_TDLS_SETUP_CONFIRM:
2748                 tf->category = WLAN_CATEGORY_TDLS;
2749                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2750
2751                 skb_put(skb, sizeof(tf->u.setup_cfm));
2752                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2753                 tf->u.setup_cfm.dialog_token = dialog_token;
2754                 break;
2755         case WLAN_TDLS_TEARDOWN:
2756                 tf->category = WLAN_CATEGORY_TDLS;
2757                 tf->action_code = WLAN_TDLS_TEARDOWN;
2758
2759                 skb_put(skb, sizeof(tf->u.teardown));
2760                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2761                 break;
2762         case WLAN_TDLS_DISCOVERY_REQUEST:
2763                 tf->category = WLAN_CATEGORY_TDLS;
2764                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2765
2766                 skb_put(skb, sizeof(tf->u.discover_req));
2767                 tf->u.discover_req.dialog_token = dialog_token;
2768                 break;
2769         default:
2770                 return -EINVAL;
2771         }
2772
2773         return 0;
2774 }
2775
2776 static int
2777 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2778                            u8 *peer, u8 action_code, u8 dialog_token,
2779                            u16 status_code, struct sk_buff *skb)
2780 {
2781         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2782         struct ieee80211_local *local = sdata->local;
2783         struct ieee80211_mgmt *mgmt;
2784
2785         mgmt = (void *)skb_put(skb, 24);
2786         memset(mgmt, 0, 24);
2787         memcpy(mgmt->da, peer, ETH_ALEN);
2788         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2789         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2790
2791         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2792                                           IEEE80211_STYPE_ACTION);
2793
2794         switch (action_code) {
2795         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2796                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2797                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2798                 mgmt->u.action.u.tdls_discover_resp.action_code =
2799                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2800                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2801                         dialog_token;
2802                 mgmt->u.action.u.tdls_discover_resp.capability =
2803                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2804
2805                 ieee80211_add_srates_ie(sdata, skb, false,
2806                                         local->oper_channel->band);
2807                 ieee80211_add_ext_srates_ie(sdata, skb, false,
2808                                             local->oper_channel->band);
2809                 ieee80211_tdls_add_ext_capab(skb);
2810                 break;
2811         default:
2812                 return -EINVAL;
2813         }
2814
2815         return 0;
2816 }
2817
2818 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2819                                u8 *peer, u8 action_code, u8 dialog_token,
2820                                u16 status_code, const u8 *extra_ies,
2821                                size_t extra_ies_len)
2822 {
2823         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2824         struct ieee80211_local *local = sdata->local;
2825         struct ieee80211_tx_info *info;
2826         struct sk_buff *skb = NULL;
2827         bool send_direct;
2828         int ret;
2829
2830         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2831                 return -ENOTSUPP;
2832
2833         /* make sure we are in managed mode, and associated */
2834         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2835             !sdata->u.mgd.associated)
2836                 return -EINVAL;
2837
2838         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
2839                  action_code, peer);
2840
2841         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2842                             max(sizeof(struct ieee80211_mgmt),
2843                                 sizeof(struct ieee80211_tdls_data)) +
2844                             50 + /* supported rates */
2845                             7 + /* ext capab */
2846                             extra_ies_len +
2847                             sizeof(struct ieee80211_tdls_lnkie));
2848         if (!skb)
2849                 return -ENOMEM;
2850
2851         info = IEEE80211_SKB_CB(skb);
2852         skb_reserve(skb, local->hw.extra_tx_headroom);
2853
2854         switch (action_code) {
2855         case WLAN_TDLS_SETUP_REQUEST:
2856         case WLAN_TDLS_SETUP_RESPONSE:
2857         case WLAN_TDLS_SETUP_CONFIRM:
2858         case WLAN_TDLS_TEARDOWN:
2859         case WLAN_TDLS_DISCOVERY_REQUEST:
2860                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2861                                                      action_code, dialog_token,
2862                                                      status_code, skb);
2863                 send_direct = false;
2864                 break;
2865         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2866                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2867                                                  dialog_token, status_code,
2868                                                  skb);
2869                 send_direct = true;
2870                 break;
2871         default:
2872                 ret = -ENOTSUPP;
2873                 break;
2874         }
2875
2876         if (ret < 0)
2877                 goto fail;
2878
2879         if (extra_ies_len)
2880                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2881
2882         /* the TDLS link IE is always added last */
2883         switch (action_code) {
2884         case WLAN_TDLS_SETUP_REQUEST:
2885         case WLAN_TDLS_SETUP_CONFIRM:
2886         case WLAN_TDLS_TEARDOWN:
2887         case WLAN_TDLS_DISCOVERY_REQUEST:
2888                 /* we are the initiator */
2889                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2890                                            sdata->u.mgd.bssid);
2891                 break;
2892         case WLAN_TDLS_SETUP_RESPONSE:
2893         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2894                 /* we are the responder */
2895                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2896                                            sdata->u.mgd.bssid);
2897                 break;
2898         default:
2899                 ret = -ENOTSUPP;
2900                 goto fail;
2901         }
2902
2903         if (send_direct) {
2904                 ieee80211_tx_skb(sdata, skb);
2905                 return 0;
2906         }
2907
2908         /*
2909          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2910          * we should default to AC_VI.
2911          */
2912         switch (action_code) {
2913         case WLAN_TDLS_SETUP_REQUEST:
2914         case WLAN_TDLS_SETUP_RESPONSE:
2915                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2916                 skb->priority = 2;
2917                 break;
2918         default:
2919                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2920                 skb->priority = 5;
2921                 break;
2922         }
2923
2924         /* disable bottom halves when entering the Tx path */
2925         local_bh_disable();
2926         ret = ieee80211_subif_start_xmit(skb, dev);
2927         local_bh_enable();
2928
2929         return ret;
2930
2931 fail:
2932         dev_kfree_skb(skb);
2933         return ret;
2934 }
2935
2936 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2937                                u8 *peer, enum nl80211_tdls_operation oper)
2938 {
2939         struct sta_info *sta;
2940         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2941
2942         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2943                 return -ENOTSUPP;
2944
2945         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2946                 return -EINVAL;
2947
2948         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
2949
2950         switch (oper) {
2951         case NL80211_TDLS_ENABLE_LINK:
2952                 rcu_read_lock();
2953                 sta = sta_info_get(sdata, peer);
2954                 if (!sta) {
2955                         rcu_read_unlock();
2956                         return -ENOLINK;
2957                 }
2958
2959                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2960                 rcu_read_unlock();
2961                 break;
2962         case NL80211_TDLS_DISABLE_LINK:
2963                 return sta_info_destroy_addr(sdata, peer);
2964         case NL80211_TDLS_TEARDOWN:
2965         case NL80211_TDLS_SETUP:
2966         case NL80211_TDLS_DISCOVERY_REQ:
2967                 /* We don't support in-driver setup/teardown/discovery */
2968                 return -ENOTSUPP;
2969         default:
2970                 return -ENOTSUPP;
2971         }
2972
2973         return 0;
2974 }
2975
2976 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2977                                   const u8 *peer, u64 *cookie)
2978 {
2979         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2980         struct ieee80211_local *local = sdata->local;
2981         struct ieee80211_qos_hdr *nullfunc;
2982         struct sk_buff *skb;
2983         int size = sizeof(*nullfunc);
2984         __le16 fc;
2985         bool qos;
2986         struct ieee80211_tx_info *info;
2987         struct sta_info *sta;
2988
2989         rcu_read_lock();
2990         sta = sta_info_get(sdata, peer);
2991         if (sta) {
2992                 qos = test_sta_flag(sta, WLAN_STA_WME);
2993                 rcu_read_unlock();
2994         } else {
2995                 rcu_read_unlock();
2996                 return -ENOLINK;
2997         }
2998
2999         if (qos) {
3000                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3001                                  IEEE80211_STYPE_QOS_NULLFUNC |
3002                                  IEEE80211_FCTL_FROMDS);
3003         } else {
3004                 size -= 2;
3005                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3006                                  IEEE80211_STYPE_NULLFUNC |
3007                                  IEEE80211_FCTL_FROMDS);
3008         }
3009
3010         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3011         if (!skb)
3012                 return -ENOMEM;
3013
3014         skb->dev = dev;
3015
3016         skb_reserve(skb, local->hw.extra_tx_headroom);
3017
3018         nullfunc = (void *) skb_put(skb, size);
3019         nullfunc->frame_control = fc;
3020         nullfunc->duration_id = 0;
3021         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3022         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3023         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3024         nullfunc->seq_ctrl = 0;
3025
3026         info = IEEE80211_SKB_CB(skb);
3027
3028         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3029                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3030
3031         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3032         skb->priority = 7;
3033         if (qos)
3034                 nullfunc->qos_ctrl = cpu_to_le16(7);
3035
3036         local_bh_disable();
3037         ieee80211_xmit(sdata, skb);
3038         local_bh_enable();
3039
3040         *cookie = (unsigned long) skb;
3041         return 0;
3042 }
3043
3044 static struct ieee80211_channel *
3045 ieee80211_cfg_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
3046                           enum nl80211_channel_type *type)
3047 {
3048         struct ieee80211_local *local = wiphy_priv(wiphy);
3049
3050         *type = local->_oper_channel_type;
3051         return local->oper_channel;
3052 }
3053
3054 #ifdef CONFIG_PM
3055 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3056 {
3057         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3058 }
3059 #endif
3060
3061 struct cfg80211_ops mac80211_config_ops = {
3062         .add_virtual_intf = ieee80211_add_iface,
3063         .del_virtual_intf = ieee80211_del_iface,
3064         .change_virtual_intf = ieee80211_change_iface,
3065         .start_p2p_device = ieee80211_start_p2p_device,
3066         .stop_p2p_device = ieee80211_stop_p2p_device,
3067         .add_key = ieee80211_add_key,
3068         .del_key = ieee80211_del_key,
3069         .get_key = ieee80211_get_key,
3070         .set_default_key = ieee80211_config_default_key,
3071         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3072         .start_ap = ieee80211_start_ap,
3073         .change_beacon = ieee80211_change_beacon,
3074         .stop_ap = ieee80211_stop_ap,
3075         .add_station = ieee80211_add_station,
3076         .del_station = ieee80211_del_station,
3077         .change_station = ieee80211_change_station,
3078         .get_station = ieee80211_get_station,
3079         .dump_station = ieee80211_dump_station,
3080         .dump_survey = ieee80211_dump_survey,
3081 #ifdef CONFIG_MAC80211_MESH
3082         .add_mpath = ieee80211_add_mpath,
3083         .del_mpath = ieee80211_del_mpath,
3084         .change_mpath = ieee80211_change_mpath,
3085         .get_mpath = ieee80211_get_mpath,
3086         .dump_mpath = ieee80211_dump_mpath,
3087         .update_mesh_config = ieee80211_update_mesh_config,
3088         .get_mesh_config = ieee80211_get_mesh_config,
3089         .join_mesh = ieee80211_join_mesh,
3090         .leave_mesh = ieee80211_leave_mesh,
3091 #endif
3092         .change_bss = ieee80211_change_bss,
3093         .set_txq_params = ieee80211_set_txq_params,
3094         .set_monitor_channel = ieee80211_set_monitor_channel,
3095         .suspend = ieee80211_suspend,
3096         .resume = ieee80211_resume,
3097         .scan = ieee80211_scan,
3098         .sched_scan_start = ieee80211_sched_scan_start,
3099         .sched_scan_stop = ieee80211_sched_scan_stop,
3100         .auth = ieee80211_auth,
3101         .assoc = ieee80211_assoc,
3102         .deauth = ieee80211_deauth,
3103         .disassoc = ieee80211_disassoc,
3104         .join_ibss = ieee80211_join_ibss,
3105         .leave_ibss = ieee80211_leave_ibss,
3106         .set_wiphy_params = ieee80211_set_wiphy_params,
3107         .set_tx_power = ieee80211_set_tx_power,
3108         .get_tx_power = ieee80211_get_tx_power,
3109         .set_wds_peer = ieee80211_set_wds_peer,
3110         .rfkill_poll = ieee80211_rfkill_poll,
3111         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3112         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3113         .set_power_mgmt = ieee80211_set_power_mgmt,
3114         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3115         .remain_on_channel = ieee80211_remain_on_channel,
3116         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3117         .mgmt_tx = ieee80211_mgmt_tx,
3118         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3119         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3120         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3121         .set_antenna = ieee80211_set_antenna,
3122         .get_antenna = ieee80211_get_antenna,
3123         .set_ringparam = ieee80211_set_ringparam,
3124         .get_ringparam = ieee80211_get_ringparam,
3125         .set_rekey_data = ieee80211_set_rekey_data,
3126         .tdls_oper = ieee80211_tdls_oper,
3127         .tdls_mgmt = ieee80211_tdls_mgmt,
3128         .probe_client = ieee80211_probe_client,
3129         .set_noack_map = ieee80211_set_noack_map,
3130 #ifdef CONFIG_PM
3131         .set_wakeup = ieee80211_set_wakeup,
3132 #endif
3133         .get_et_sset_count = ieee80211_get_et_sset_count,
3134         .get_et_stats = ieee80211_get_et_stats,
3135         .get_et_strings = ieee80211_get_et_strings,
3136         .get_channel = ieee80211_cfg_get_channel,
3137 };