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 <net/cfg80211.h>
  16 #include "ieee80211_i.h"
  17 #include "driver-ops.h"
  18 #include "cfg.h"
  19 #include "rate.h"
  20 #include "mesh.h"
  21
  22 static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
  23                                               enum nl80211_iftype type,
  24                                               u32 *flags,
  25                                               struct vif_params *params)
  26 {
  27         struct ieee80211_local *local = wiphy_priv(wiphy);
  28         struct net_device *dev;
  29         struct ieee80211_sub_if_data *sdata;
  30         int err;
  31
  32         err = ieee80211_if_add(local, name, &dev, type, params);
  33         if (err)
  34                 return ERR_PTR(err);
  35
  36         if (type == NL80211_IFTYPE_MONITOR && flags) {
  37                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  38                 sdata->u.mntr_flags = *flags;
  39         }
  40
  41         return dev;
  42 }
  43
  44 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  45 {
  46         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  47
  48         return 0;
  49 }
  50
  51 static int ieee80211_change_iface(struct wiphy *wiphy,
  52                                   struct net_device *dev,
  53                                   enum nl80211_iftype type, u32 *flags,
  54                                   struct vif_params *params)
  55 {
  56         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  57         int ret;
  58
  59         ret = ieee80211_if_change_type(sdata, type);
  60         if (ret)
  61                 return ret;
  62
  63         if (type == NL80211_IFTYPE_AP_VLAN &&
  64             params && params->use_4addr == 0)
  65                 rcu_assign_pointer(sdata->u.vlan.sta, NULL);
  66         else if (type == NL80211_IFTYPE_STATION &&
  67                  params && params->use_4addr >= 0)
  68                 sdata->u.mgd.use_4addr = params->use_4addr;
  69
  70         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  71                 struct ieee80211_local *local = sdata->local;
  72
  73                 if (ieee80211_sdata_running(sdata)) {
  74                         /*
  75                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  76                          * changed while the interface is up.
  77                          * Else we would need to add a lot of cruft
  78                          * to update everything:
  79                          *      cooked_mntrs, monitor and all fif_* counters
  80                          *      reconfigure hardware
  81                          */
  82                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  83                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  84                                 return -EBUSY;
  85
  86                         ieee80211_adjust_monitor_flags(sdata, -1);
  87                         sdata->u.mntr_flags = *flags;
  88                         ieee80211_adjust_monitor_flags(sdata, 1);
  89
  90                         ieee80211_configure_filter(local);
  91                 } else {
  92                         /*
  93                          * Because the interface is down, ieee80211_do_stop
  94                          * and ieee80211_do_open take care of "everything"
  95                          * mentioned in the comment above.
  96                          */
  97                         sdata->u.mntr_flags = *flags;
  98                 }
  99         }
 100
 101         return 0;
 102 }
 103
 104 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 105                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 106                              struct key_params *params)
 107 {
 108         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 109         struct sta_info *sta = NULL;
 110         struct ieee80211_key *key;
 111         int err;
 112
 113         if (!ieee80211_sdata_running(sdata))
 114                 return -ENETDOWN;
 115
 116         /* reject WEP and TKIP keys if WEP failed to initialize */
 117         switch (params->cipher) {
 118         case WLAN_CIPHER_SUITE_WEP40:
 119         case WLAN_CIPHER_SUITE_TKIP:
 120         case WLAN_CIPHER_SUITE_WEP104:
 121                 if (IS_ERR(sdata->local->wep_tx_tfm))
 122                         return -EINVAL;
 123                 break;
 124         default:
 125                 break;
 126         }
 127
 128         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 129                                   params->key, params->seq_len, params->seq);
 130         if (IS_ERR(key))
 131                 return PTR_ERR(key);
 132
 133         if (pairwise)
 134                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 135
 136         mutex_lock(&sdata->local->sta_mtx);
 137
 138         if (mac_addr) {
 139                 if (ieee80211_vif_is_mesh(&sdata->vif))
 140                         sta = sta_info_get(sdata, mac_addr);
 141                 else
 142                         sta = sta_info_get_bss(sdata, mac_addr);
 143                 if (!sta) {
 144                         ieee80211_key_free(sdata->local, key);
 145                         err = -ENOENT;
 146                         goto out_unlock;
 147                 }
 148         }
 149
 150         err = ieee80211_key_link(key, sdata, sta);
 151         if (err)
 152                 ieee80211_key_free(sdata->local, key);
 153
 154  out_unlock:
 155         mutex_unlock(&sdata->local->sta_mtx);
 156
 157         return err;
 158 }
 159
 160 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 161                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 162 {
 163         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 164         struct ieee80211_local *local = sdata->local;
 165         struct sta_info *sta;
 166         struct ieee80211_key *key = NULL;
 167         int ret;
 168
 169         mutex_lock(&local->sta_mtx);
 170         mutex_lock(&local->key_mtx);
 171
 172         if (mac_addr) {
 173                 ret = -ENOENT;
 174
 175                 sta = sta_info_get_bss(sdata, mac_addr);
 176                 if (!sta)
 177                         goto out_unlock;
 178
 179                 if (pairwise)
 180                         key = key_mtx_dereference(local, sta->ptk);
 181                 else
 182                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 183         } else
 184                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 185
 186         if (!key) {
 187                 ret = -ENOENT;
 188                 goto out_unlock;
 189         }
 190
 191         __ieee80211_key_free(key);
 192
 193         ret = 0;
 194  out_unlock:
 195         mutex_unlock(&local->key_mtx);
 196         mutex_unlock(&local->sta_mtx);
 197
 198         return ret;
 199 }
 200
 201 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 202                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 203                              void *cookie,
 204                              void (*callback)(void *cookie,
 205                                               struct key_params *params))
 206 {
 207         struct ieee80211_sub_if_data *sdata;
 208         struct sta_info *sta = NULL;
 209         u8 seq[6] = {0};
 210         struct key_params params;
 211         struct ieee80211_key *key = NULL;
 212         u32 iv32;
 213         u16 iv16;
 214         int err = -ENOENT;
 215
 216         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 217
 218         rcu_read_lock();
 219
 220         if (mac_addr) {
 221                 sta = sta_info_get_bss(sdata, mac_addr);
 222                 if (!sta)
 223                         goto out;
 224
 225                 if (pairwise)
 226                         key = rcu_dereference(sta->ptk);
 227                 else if (key_idx < NUM_DEFAULT_KEYS)
 228                         key = rcu_dereference(sta->gtk[key_idx]);
 229         } else
 230                 key = rcu_dereference(sdata->keys[key_idx]);
 231
 232         if (!key)
 233                 goto out;
 234
 235         memset(&params, 0, sizeof(params));
 236
 237         params.cipher = key->conf.cipher;
 238
 239         switch (key->conf.cipher) {
 240         case WLAN_CIPHER_SUITE_TKIP:
 241                 iv32 = key->u.tkip.tx.iv32;
 242                 iv16 = key->u.tkip.tx.iv16;
 243
 244                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 245                         drv_get_tkip_seq(sdata->local,
 246                                          key->conf.hw_key_idx,
 247                                          &iv32, &iv16);
 248
 249                 seq[0] = iv16 & 0xff;
 250                 seq[1] = (iv16 >> 8) & 0xff;
 251                 seq[2] = iv32 & 0xff;
 252                 seq[3] = (iv32 >> 8) & 0xff;
 253                 seq[4] = (iv32 >> 16) & 0xff;
 254                 seq[5] = (iv32 >> 24) & 0xff;
 255                 params.seq = seq;
 256                 params.seq_len = 6;
 257                 break;
 258         case WLAN_CIPHER_SUITE_CCMP:
 259                 seq[0] = key->u.ccmp.tx_pn[5];
 260                 seq[1] = key->u.ccmp.tx_pn[4];
 261                 seq[2] = key->u.ccmp.tx_pn[3];
 262                 seq[3] = key->u.ccmp.tx_pn[2];
 263                 seq[4] = key->u.ccmp.tx_pn[1];
 264                 seq[5] = key->u.ccmp.tx_pn[0];
 265                 params.seq = seq;
 266                 params.seq_len = 6;
 267                 break;
 268         case WLAN_CIPHER_SUITE_AES_CMAC:
 269                 seq[0] = key->u.aes_cmac.tx_pn[5];
 270                 seq[1] = key->u.aes_cmac.tx_pn[4];
 271                 seq[2] = key->u.aes_cmac.tx_pn[3];
 272                 seq[3] = key->u.aes_cmac.tx_pn[2];
 273                 seq[4] = key->u.aes_cmac.tx_pn[1];
 274                 seq[5] = key->u.aes_cmac.tx_pn[0];
 275                 params.seq = seq;
 276                 params.seq_len = 6;
 277                 break;
 278         }
 279
 280         params.key = key->conf.key;
 281         params.key_len = key->conf.keylen;
 282
 283         callback(cookie, &params);
 284         err = 0;
 285
 286  out:
 287         rcu_read_unlock();
 288         return err;
 289 }
 290
 291 static int ieee80211_config_default_key(struct wiphy *wiphy,
 292                                         struct net_device *dev,
 293                                         u8 key_idx, bool uni,
 294                                         bool multi)
 295 {
 296         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 297
 298         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 299
 300         return 0;
 301 }
 302
 303 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 304                                              struct net_device *dev,
 305                                              u8 key_idx)
 306 {
 307         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 308
 309         ieee80211_set_default_mgmt_key(sdata, key_idx);
 310
 311         return 0;
 312 }
 313
 314 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 315 {
 316         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 317                 struct ieee80211_supported_band *sband;
 318                 sband = sta->local->hw.wiphy->bands[
 319                                 sta->local->hw.conf.channel->band];
 320                 rate->legacy = sband->bitrates[idx].bitrate;
 321         } else
 322                 rate->mcs = idx;
 323 }
 324
 325 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 326 {
 327         struct ieee80211_sub_if_data *sdata = sta->sdata;
 328         struct timespec uptime;
 329
 330         sinfo->generation = sdata->local->sta_generation;
 331
 332         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 333                         STATION_INFO_RX_BYTES |
 334                         STATION_INFO_TX_BYTES |
 335                         STATION_INFO_RX_PACKETS |
 336                         STATION_INFO_TX_PACKETS |
 337                         STATION_INFO_TX_RETRIES |
 338                         STATION_INFO_TX_FAILED |
 339                         STATION_INFO_TX_BITRATE |
 340                         STATION_INFO_RX_BITRATE |
 341                         STATION_INFO_RX_DROP_MISC |
 342                         STATION_INFO_BSS_PARAM |
 343                         STATION_INFO_CONNECTED_TIME;
 344
 345         do_posix_clock_monotonic_gettime(&uptime);
 346         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 347
 348         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 349         sinfo->rx_bytes = sta->rx_bytes;
 350         sinfo->tx_bytes = sta->tx_bytes;
 351         sinfo->rx_packets = sta->rx_packets;
 352         sinfo->tx_packets = sta->tx_packets;
 353         sinfo->tx_retries = sta->tx_retry_count;
 354         sinfo->tx_failed = sta->tx_retry_failed;
 355         sinfo->rx_dropped_misc = sta->rx_dropped;
 356
 357         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 358             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 359                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 360                 sinfo->signal = (s8)sta->last_signal;
 361                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 362         }
 363
 364         sinfo->txrate.flags = 0;
 365         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 366                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 367         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 368                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 369         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 370                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 371         rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
 372
 373         sinfo->rxrate.flags = 0;
 374         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 375                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 376         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 377                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 378         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 379                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 380         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 381
 382         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 383 #ifdef CONFIG_MAC80211_MESH
 384                 sinfo->filled |= STATION_INFO_LLID |
 385                                  STATION_INFO_PLID |
 386                                  STATION_INFO_PLINK_STATE;
 387
 388                 sinfo->llid = le16_to_cpu(sta->llid);
 389                 sinfo->plid = le16_to_cpu(sta->plid);
 390                 sinfo->plink_state = sta->plink_state;
 391 #endif
 392         }
 393
 394         sinfo->bss_param.flags = 0;
 395         if (sdata->vif.bss_conf.use_cts_prot)
 396                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 397         if (sdata->vif.bss_conf.use_short_preamble)
 398                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 399         if (sdata->vif.bss_conf.use_short_slot)
 400                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 401         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 402         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 403 }
 404
 405
 406 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 407                                  int idx, u8 *mac, struct station_info *sinfo)
 408 {
 409         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 410         struct sta_info *sta;
 411         int ret = -ENOENT;
 412
 413         rcu_read_lock();
 414
 415         sta = sta_info_get_by_idx(sdata, idx);
 416         if (sta) {
 417                 ret = 0;
 418                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 419                 sta_set_sinfo(sta, sinfo);
 420         }
 421
 422         rcu_read_unlock();
 423
 424         return ret;
 425 }
 426
 427 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 428                                  int idx, struct survey_info *survey)
 429 {
 430         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 431
 432         return drv_get_survey(local, idx, survey);
 433 }
 434
 435 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 436                                  u8 *mac, struct station_info *sinfo)
 437 {
 438         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 439         struct sta_info *sta;
 440         int ret = -ENOENT;
 441
 442         rcu_read_lock();
 443
 444         sta = sta_info_get_bss(sdata, mac);
 445         if (sta) {
 446                 ret = 0;
 447                 sta_set_sinfo(sta, sinfo);
 448         }
 449
 450         rcu_read_unlock();
 451
 452         return ret;
 453 }
 454
 455 /*
 456  * This handles both adding a beacon and setting new beacon info
 457  */
 458 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 459                                    struct beacon_parameters *params)
 460 {
 461         struct beacon_data *new, *old;
 462         int new_head_len, new_tail_len;
 463         int size;
 464         int err = -EINVAL;
 465
 466         old = rtnl_dereference(sdata->u.ap.beacon);
 467
 468         /* head must not be zero-length */
 469         if (params->head && !params->head_len)
 470                 return -EINVAL;
 471
 472         /*
 473          * This is a kludge. beacon interval should really be part
 474          * of the beacon information.
 475          */
 476         if (params->interval &&
 477             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 478                 sdata->vif.bss_conf.beacon_int = params->interval;
 479                 ieee80211_bss_info_change_notify(sdata,
 480                                                  BSS_CHANGED_BEACON_INT);
 481         }
 482
 483         /* Need to have a beacon head if we don't have one yet */
 484         if (!params->head && !old)
 485                 return err;
 486
 487         /* sorry, no way to start beaconing without dtim period */
 488         if (!params->dtim_period && !old)
 489                 return err;
 490
 491         /* new or old head? */
 492         if (params->head)
 493                 new_head_len = params->head_len;
 494         else
 495                 new_head_len = old->head_len;
 496
 497         /* new or old tail? */
 498         if (params->tail || !old)
 499                 /* params->tail_len will be zero for !params->tail */
 500                 new_tail_len = params->tail_len;
 501         else
 502                 new_tail_len = old->tail_len;
 503
 504         size = sizeof(*new) + new_head_len + new_tail_len;
 505
 506         new = kzalloc(size, GFP_KERNEL);
 507         if (!new)
 508                 return -ENOMEM;
 509
 510         /* start filling the new info now */
 511
 512         /* new or old dtim period? */
 513         if (params->dtim_period)
 514                 new->dtim_period = params->dtim_period;
 515         else
 516                 new->dtim_period = old->dtim_period;
 517
 518         /*
 519          * pointers go into the block we allocated,
 520          * memory is | beacon_data | head | tail |
 521          */
 522         new->head = ((u8 *) new) + sizeof(*new);
 523         new->tail = new->head + new_head_len;
 524         new->head_len = new_head_len;
 525         new->tail_len = new_tail_len;
 526
 527         /* copy in head */
 528         if (params->head)
 529                 memcpy(new->head, params->head, new_head_len);
 530         else
 531                 memcpy(new->head, old->head, new_head_len);
 532
 533         /* copy in optional tail */
 534         if (params->tail)
 535                 memcpy(new->tail, params->tail, new_tail_len);
 536         else
 537                 if (old)
 538                         memcpy(new->tail, old->tail, new_tail_len);
 539
 540         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 541
 542         rcu_assign_pointer(sdata->u.ap.beacon, new);
 543
 544         synchronize_rcu();
 545
 546         kfree(old);
 547
 548         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 549                                                 BSS_CHANGED_BEACON);
 550         return 0;
 551 }
 552
 553 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 554                                 struct beacon_parameters *params)
 555 {
 556         struct ieee80211_sub_if_data *sdata;
 557         struct beacon_data *old;
 558
 559         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 560
 561         old = rtnl_dereference(sdata->u.ap.beacon);
 562         if (old)
 563                 return -EALREADY;
 564
 565         return ieee80211_config_beacon(sdata, params);
 566 }
 567
 568 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 569                                 struct beacon_parameters *params)
 570 {
 571         struct ieee80211_sub_if_data *sdata;
 572         struct beacon_data *old;
 573
 574         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 575
 576         old = rtnl_dereference(sdata->u.ap.beacon);
 577         if (!old)
 578                 return -ENOENT;
 579
 580         return ieee80211_config_beacon(sdata, params);
 581 }
 582
 583 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 584 {
 585         struct ieee80211_sub_if_data *sdata;
 586         struct beacon_data *old;
 587
 588         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 589
 590         old = rtnl_dereference(sdata->u.ap.beacon);
 591         if (!old)
 592                 return -ENOENT;
 593
 594         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 595         synchronize_rcu();
 596         kfree(old);
 597
 598         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 599         return 0;
 600 }
 601
 602 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 603 struct iapp_layer2_update {
 604         u8 da[ETH_ALEN];        /* broadcast */
 605         u8 sa[ETH_ALEN];        /* STA addr */
 606         __be16 len;             /* 6 */
 607         u8 dsap;                /* 0 */
 608         u8 ssap;                /* 0 */
 609         u8 control;
 610         u8 xid_info[3];
 611 } __packed;
 612
 613 static void ieee80211_send_layer2_update(struct sta_info *sta)
 614 {
 615         struct iapp_layer2_update *msg;
 616         struct sk_buff *skb;
 617
 618         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 619          * bridge devices */
 620
 621         skb = dev_alloc_skb(sizeof(*msg));
 622         if (!skb)
 623                 return;
 624         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 625
 626         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 627          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 628
 629         memset(msg->da, 0xff, ETH_ALEN);
 630         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 631         msg->len = htons(6);
 632         msg->dsap = 0;
 633         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 634         msg->control = 0xaf;    /* XID response lsb.1111F101.
 635                                  * F=0 (no poll command; unsolicited frame) */
 636         msg->xid_info[0] = 0x81;        /* XID format identifier */
 637         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 638         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 639
 640         skb->dev = sta->sdata->dev;
 641         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 642         memset(skb->cb, 0, sizeof(skb->cb));
 643         netif_rx_ni(skb);
 644 }
 645
 646 static void sta_apply_parameters(struct ieee80211_local *local,
 647                                  struct sta_info *sta,
 648                                  struct station_parameters *params)
 649 {
 650         unsigned long flags;
 651         u32 rates;
 652         int i, j;
 653         struct ieee80211_supported_band *sband;
 654         struct ieee80211_sub_if_data *sdata = sta->sdata;
 655         u32 mask, set;
 656
 657         sband = local->hw.wiphy->bands[local->oper_channel->band];
 658
 659         spin_lock_irqsave(&sta->flaglock, flags);
 660         mask = params->sta_flags_mask;
 661         set = params->sta_flags_set;
 662
 663         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 664                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 665                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 666                         sta->flags |= WLAN_STA_AUTHORIZED;
 667         }
 668
 669         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 670                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 671                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 672                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 673         }
 674
 675         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 676                 sta->flags &= ~WLAN_STA_WME;
 677                 if (set & BIT(NL80211_STA_FLAG_WME))
 678                         sta->flags |= WLAN_STA_WME;
 679         }
 680
 681         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 682                 sta->flags &= ~WLAN_STA_MFP;
 683                 if (set & BIT(NL80211_STA_FLAG_MFP))
 684                         sta->flags |= WLAN_STA_MFP;
 685         }
 686
 687         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 688                 sta->flags &= ~WLAN_STA_AUTH;
 689                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 690                         sta->flags |= WLAN_STA_AUTH;
 691         }
 692         spin_unlock_irqrestore(&sta->flaglock, flags);
 693
 694         /*
 695          * cfg80211 validates this (1-2007) and allows setting the AID
 696          * only when creating a new station entry
 697          */
 698         if (params->aid)
 699                 sta->sta.aid = params->aid;
 700
 701         /*
 702          * FIXME: updating the following information is racy when this
 703          *        function is called from ieee80211_change_station().
 704          *        However, all this information should be static so
 705          *        maybe we should just reject attemps to change it.
 706          */
 707
 708         if (params->listen_interval >= 0)
 709                 sta->listen_interval = params->listen_interval;
 710
 711         if (params->supported_rates) {
 712                 rates = 0;
 713
 714                 for (i = 0; i < params->supported_rates_len; i++) {
 715                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 716                         for (j = 0; j < sband->n_bitrates; j++) {
 717                                 if (sband->bitrates[j].bitrate == rate)
 718                                         rates |= BIT(j);
 719                         }
 720                 }
 721                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 722         }
 723
 724         if (params->ht_capa)
 725                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 726                                                   params->ht_capa,
 727                                                   &sta->sta.ht_cap);
 728
 729         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 730 #ifdef CONFIG_MAC80211_MESH
 731                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
 732                         switch (params->plink_state) {
 733                         case NL80211_PLINK_LISTEN:
 734                         case NL80211_PLINK_ESTAB:
 735                         case NL80211_PLINK_BLOCKED:
 736                                 sta->plink_state = params->plink_state;
 737                                 break;
 738                         default:
 739                                 /*  nothing  */
 740                                 break;
 741                         }
 742                 else
 743                         switch (params->plink_action) {
 744                         case PLINK_ACTION_OPEN:
 745                                 mesh_plink_open(sta);
 746                                 break;
 747                         case PLINK_ACTION_BLOCK:
 748                                 mesh_plink_block(sta);
 749                                 break;
 750                         }
 751 #endif
 752         }
 753 }
 754
 755 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 756                                  u8 *mac, struct station_parameters *params)
 757 {
 758         struct ieee80211_local *local = wiphy_priv(wiphy);
 759         struct sta_info *sta;
 760         struct ieee80211_sub_if_data *sdata;
 761         int err;
 762         int layer2_update;
 763
 764         if (params->vlan) {
 765                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 766
 767                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 768                     sdata->vif.type != NL80211_IFTYPE_AP)
 769                         return -EINVAL;
 770         } else
 771                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 772
 773         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 774                 return -EINVAL;
 775
 776         if (is_multicast_ether_addr(mac))
 777                 return -EINVAL;
 778
 779         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 780         if (!sta)
 781                 return -ENOMEM;
 782
 783         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 784
 785         sta_apply_parameters(local, sta, params);
 786
 787         rate_control_rate_init(sta);
 788
 789         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 790                 sdata->vif.type == NL80211_IFTYPE_AP;
 791
 792         err = sta_info_insert_rcu(sta);
 793         if (err) {
 794                 rcu_read_unlock();
 795                 return err;
 796         }
 797
 798         if (layer2_update)
 799                 ieee80211_send_layer2_update(sta);
 800
 801         rcu_read_unlock();
 802
 803         return 0;
 804 }
 805
 806 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 807                                  u8 *mac)
 808 {
 809         struct ieee80211_local *local = wiphy_priv(wiphy);
 810         struct ieee80211_sub_if_data *sdata;
 811
 812         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 813
 814         if (mac)
 815                 return sta_info_destroy_addr_bss(sdata, mac);
 816
 817         sta_info_flush(local, sdata);
 818         return 0;
 819 }
 820
 821 static int ieee80211_change_station(struct wiphy *wiphy,
 822                                     struct net_device *dev,
 823                                     u8 *mac,
 824                                     struct station_parameters *params)
 825 {
 826         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 827         struct ieee80211_local *local = wiphy_priv(wiphy);
 828         struct sta_info *sta;
 829         struct ieee80211_sub_if_data *vlansdata;
 830
 831         rcu_read_lock();
 832
 833         sta = sta_info_get_bss(sdata, mac);
 834         if (!sta) {
 835                 rcu_read_unlock();
 836                 return -ENOENT;
 837         }
 838
 839         if (params->vlan && params->vlan != sta->sdata->dev) {
 840                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 841
 842                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 843                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 844                         rcu_read_unlock();
 845                         return -EINVAL;
 846                 }
 847
 848                 if (params->vlan->ieee80211_ptr->use_4addr) {
 849                         if (vlansdata->u.vlan.sta) {
 850                                 rcu_read_unlock();
 851                                 return -EBUSY;
 852                         }
 853
 854                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 855                 }
 856
 857                 sta->sdata = vlansdata;
 858                 ieee80211_send_layer2_update(sta);
 859         }
 860
 861         sta_apply_parameters(local, sta, params);
 862
 863         rcu_read_unlock();
 864
 865         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
 866             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
 867                 ieee80211_recalc_ps(local, -1);
 868
 869         return 0;
 870 }
 871
 872 #ifdef CONFIG_MAC80211_MESH
 873 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 874                                  u8 *dst, u8 *next_hop)
 875 {
 876         struct ieee80211_sub_if_data *sdata;
 877         struct mesh_path *mpath;
 878         struct sta_info *sta;
 879         int err;
 880
 881         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 882
 883         rcu_read_lock();
 884         sta = sta_info_get(sdata, next_hop);
 885         if (!sta) {
 886                 rcu_read_unlock();
 887                 return -ENOENT;
 888         }
 889
 890         err = mesh_path_add(dst, sdata);
 891         if (err) {
 892                 rcu_read_unlock();
 893                 return err;
 894         }
 895
 896         mpath = mesh_path_lookup(dst, sdata);
 897         if (!mpath) {
 898                 rcu_read_unlock();
 899                 return -ENXIO;
 900         }
 901         mesh_path_fix_nexthop(mpath, sta);
 902
 903         rcu_read_unlock();
 904         return 0;
 905 }
 906
 907 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 908                                  u8 *dst)
 909 {
 910         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 911
 912         if (dst)
 913                 return mesh_path_del(dst, sdata);
 914
 915         mesh_path_flush(sdata);
 916         return 0;
 917 }
 918
 919 static int ieee80211_change_mpath(struct wiphy *wiphy,
 920                                     struct net_device *dev,
 921                                     u8 *dst, u8 *next_hop)
 922 {
 923         struct ieee80211_sub_if_data *sdata;
 924         struct mesh_path *mpath;
 925         struct sta_info *sta;
 926
 927         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 928
 929         rcu_read_lock();
 930
 931         sta = sta_info_get(sdata, next_hop);
 932         if (!sta) {
 933                 rcu_read_unlock();
 934                 return -ENOENT;
 935         }
 936
 937         mpath = mesh_path_lookup(dst, sdata);
 938         if (!mpath) {
 939                 rcu_read_unlock();
 940                 return -ENOENT;
 941         }
 942
 943         mesh_path_fix_nexthop(mpath, sta);
 944
 945         rcu_read_unlock();
 946         return 0;
 947 }
 948
 949 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 950                             struct mpath_info *pinfo)
 951 {
 952         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
 953
 954         if (next_hop_sta)
 955                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
 956         else
 957                 memset(next_hop, 0, ETH_ALEN);
 958
 959         pinfo->generation = mesh_paths_generation;
 960
 961         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 962                         MPATH_INFO_SN |
 963                         MPATH_INFO_METRIC |
 964                         MPATH_INFO_EXPTIME |
 965                         MPATH_INFO_DISCOVERY_TIMEOUT |
 966                         MPATH_INFO_DISCOVERY_RETRIES |
 967                         MPATH_INFO_FLAGS;
 968
 969         pinfo->frame_qlen = mpath->frame_queue.qlen;
 970         pinfo->sn = mpath->sn;
 971         pinfo->metric = mpath->metric;
 972         if (time_before(jiffies, mpath->exp_time))
 973                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 974         pinfo->discovery_timeout =
 975                         jiffies_to_msecs(mpath->discovery_timeout);
 976         pinfo->discovery_retries = mpath->discovery_retries;
 977         pinfo->flags = 0;
 978         if (mpath->flags & MESH_PATH_ACTIVE)
 979                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 980         if (mpath->flags & MESH_PATH_RESOLVING)
 981                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 982         if (mpath->flags & MESH_PATH_SN_VALID)
 983                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
 984         if (mpath->flags & MESH_PATH_FIXED)
 985                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 986         if (mpath->flags & MESH_PATH_RESOLVING)
 987                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 988
 989         pinfo->flags = mpath->flags;
 990 }
 991
 992 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 993                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 994
 995 {
 996         struct ieee80211_sub_if_data *sdata;
 997         struct mesh_path *mpath;
 998
 999         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1000
1001         rcu_read_lock();
1002         mpath = mesh_path_lookup(dst, sdata);
1003         if (!mpath) {
1004                 rcu_read_unlock();
1005                 return -ENOENT;
1006         }
1007         memcpy(dst, mpath->dst, ETH_ALEN);
1008         mpath_set_pinfo(mpath, next_hop, pinfo);
1009         rcu_read_unlock();
1010         return 0;
1011 }
1012
1013 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1014                                  int idx, u8 *dst, u8 *next_hop,
1015                                  struct mpath_info *pinfo)
1016 {
1017         struct ieee80211_sub_if_data *sdata;
1018         struct mesh_path *mpath;
1019
1020         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1021
1022         rcu_read_lock();
1023         mpath = mesh_path_lookup_by_idx(idx, sdata);
1024         if (!mpath) {
1025                 rcu_read_unlock();
1026                 return -ENOENT;
1027         }
1028         memcpy(dst, mpath->dst, ETH_ALEN);
1029         mpath_set_pinfo(mpath, next_hop, pinfo);
1030         rcu_read_unlock();
1031         return 0;
1032 }
1033
1034 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1035                                 struct net_device *dev,
1036                                 struct mesh_config *conf)
1037 {
1038         struct ieee80211_sub_if_data *sdata;
1039         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1040
1041         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1042         return 0;
1043 }
1044
1045 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1046 {
1047         return (mask >> (parm-1)) & 0x1;
1048 }
1049
1050 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1051                 const struct mesh_setup *setup)
1052 {
1053         u8 *new_ie;
1054         const u8 *old_ie;
1055
1056         /* allocate information elements */
1057         new_ie = NULL;
1058         old_ie = ifmsh->ie;
1059
1060         if (setup->ie_len) {
1061                 new_ie = kmemdup(setup->ie, setup->ie_len,
1062                                 GFP_KERNEL);
1063                 if (!new_ie)
1064                         return -ENOMEM;
1065         }
1066         ifmsh->ie_len = setup->ie_len;
1067         ifmsh->ie = new_ie;
1068         kfree(old_ie);
1069
1070         /* now copy the rest of the setup parameters */
1071         ifmsh->mesh_id_len = setup->mesh_id_len;
1072         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1073         ifmsh->mesh_pp_id = setup->path_sel_proto;
1074         ifmsh->mesh_pm_id = setup->path_metric;
1075         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1076         if (setup->is_authenticated)
1077                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1078         if (setup->is_secure)
1079                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1080
1081         return 0;
1082 }
1083
1084 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1085                                         struct net_device *dev, u32 mask,
1086                                         const struct mesh_config *nconf)
1087 {
1088         struct mesh_config *conf;
1089         struct ieee80211_sub_if_data *sdata;
1090         struct ieee80211_if_mesh *ifmsh;
1091
1092         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1093         ifmsh = &sdata->u.mesh;
1094
1095         /* Set the config options which we are interested in setting */
1096         conf = &(sdata->u.mesh.mshcfg);
1097         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1098                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1099         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1100                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1101         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1102                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1103         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1104                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1105         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1106                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1107         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1108                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1109         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1110                 conf->dot11MeshTTL = nconf->element_ttl;
1111         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1112                 conf->auto_open_plinks = nconf->auto_open_plinks;
1113         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1114                 conf->dot11MeshHWMPmaxPREQretries =
1115                         nconf->dot11MeshHWMPmaxPREQretries;
1116         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1117                 conf->path_refresh_time = nconf->path_refresh_time;
1118         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1119                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1120         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1121                 conf->dot11MeshHWMPactivePathTimeout =
1122                         nconf->dot11MeshHWMPactivePathTimeout;
1123         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1124                 conf->dot11MeshHWMPpreqMinInterval =
1125                         nconf->dot11MeshHWMPpreqMinInterval;
1126         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1127                            mask))
1128                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1129                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1130         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1131                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1132                 ieee80211_mesh_root_setup(ifmsh);
1133         }
1134         return 0;
1135 }
1136
1137 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1138                                const struct mesh_config *conf,
1139                                const struct mesh_setup *setup)
1140 {
1141         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1142         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1143         int err;
1144
1145         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1146         err = copy_mesh_setup(ifmsh, setup);
1147         if (err)
1148                 return err;
1149         ieee80211_start_mesh(sdata);
1150
1151         return 0;
1152 }
1153
1154 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1155 {
1156         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1157
1158         ieee80211_stop_mesh(sdata);
1159
1160         return 0;
1161 }
1162 #endif
1163
1164 static int ieee80211_change_bss(struct wiphy *wiphy,
1165                                 struct net_device *dev,
1166                                 struct bss_parameters *params)
1167 {
1168         struct ieee80211_sub_if_data *sdata;
1169         u32 changed = 0;
1170
1171         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1172
1173         if (params->use_cts_prot >= 0) {
1174                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1175                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1176         }
1177         if (params->use_short_preamble >= 0) {
1178                 sdata->vif.bss_conf.use_short_preamble =
1179                         params->use_short_preamble;
1180                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1181         }
1182
1183         if (!sdata->vif.bss_conf.use_short_slot &&
1184             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1185                 sdata->vif.bss_conf.use_short_slot = true;
1186                 changed |= BSS_CHANGED_ERP_SLOT;
1187         }
1188
1189         if (params->use_short_slot_time >= 0) {
1190                 sdata->vif.bss_conf.use_short_slot =
1191                         params->use_short_slot_time;
1192                 changed |= BSS_CHANGED_ERP_SLOT;
1193         }
1194
1195         if (params->basic_rates) {
1196                 int i, j;
1197                 u32 rates = 0;
1198                 struct ieee80211_local *local = wiphy_priv(wiphy);
1199                 struct ieee80211_supported_band *sband =
1200                         wiphy->bands[local->oper_channel->band];
1201
1202                 for (i = 0; i < params->basic_rates_len; i++) {
1203                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1204                         for (j = 0; j < sband->n_bitrates; j++) {
1205                                 if (sband->bitrates[j].bitrate == rate)
1206                                         rates |= BIT(j);
1207                         }
1208                 }
1209                 sdata->vif.bss_conf.basic_rates = rates;
1210                 changed |= BSS_CHANGED_BASIC_RATES;
1211         }
1212
1213         if (params->ap_isolate >= 0) {
1214                 if (params->ap_isolate)
1215                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1216                 else
1217                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1218         }
1219
1220         if (params->ht_opmode >= 0) {
1221                 sdata->vif.bss_conf.ht_operation_mode =
1222                         (u16) params->ht_opmode;
1223                 changed |= BSS_CHANGED_HT;
1224         }
1225
1226         ieee80211_bss_info_change_notify(sdata, changed);
1227
1228         return 0;
1229 }
1230
1231 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1232                                     struct ieee80211_txq_params *params)
1233 {
1234         struct ieee80211_local *local = wiphy_priv(wiphy);
1235         struct ieee80211_tx_queue_params p;
1236
1237         if (!local->ops->conf_tx)
1238                 return -EOPNOTSUPP;
1239
1240         memset(&p, 0, sizeof(p));
1241         p.aifs = params->aifs;
1242         p.cw_max = params->cwmax;
1243         p.cw_min = params->cwmin;
1244         p.txop = params->txop;
1245
1246         /*
1247          * Setting tx queue params disables u-apsd because it's only
1248          * called in master mode.
1249          */
1250         p.uapsd = false;
1251
1252         if (drv_conf_tx(local, params->queue, &p)) {
1253                 wiphy_debug(local->hw.wiphy,
1254                             "failed to set TX queue parameters for queue %d\n",
1255                             params->queue);
1256                 return -EINVAL;
1257         }
1258
1259         return 0;
1260 }
1261
1262 static int ieee80211_set_channel(struct wiphy *wiphy,
1263                                  struct net_device *netdev,
1264                                  struct ieee80211_channel *chan,
1265                                  enum nl80211_channel_type channel_type)
1266 {
1267         struct ieee80211_local *local = wiphy_priv(wiphy);
1268         struct ieee80211_sub_if_data *sdata = NULL;
1269         struct ieee80211_channel *old_oper;
1270         enum nl80211_channel_type old_oper_type;
1271         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1272
1273         if (netdev)
1274                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1275
1276         switch (ieee80211_get_channel_mode(local, NULL)) {
1277         case CHAN_MODE_HOPPING:
1278                 return -EBUSY;
1279         case CHAN_MODE_FIXED:
1280                 if (local->oper_channel != chan)
1281                         return -EBUSY;
1282                 if (!sdata && local->_oper_channel_type == channel_type)
1283                         return 0;
1284                 break;
1285         case CHAN_MODE_UNDEFINED:
1286                 break;
1287         }
1288
1289         if (sdata)
1290                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1291         old_oper_type = local->_oper_channel_type;
1292
1293         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1294                 return -EBUSY;
1295
1296         old_oper = local->oper_channel;
1297         local->oper_channel = chan;
1298
1299         /* Update driver if changes were actually made. */
1300         if ((old_oper != local->oper_channel) ||
1301             (old_oper_type != local->_oper_channel_type))
1302                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1303
1304         if ((sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR) &&
1305             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1306                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1307
1308         return 0;
1309 }
1310
1311 #ifdef CONFIG_PM
1312 static int ieee80211_suspend(struct wiphy *wiphy,
1313                              struct cfg80211_wowlan *wowlan)
1314 {
1315         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1316 }
1317
1318 static int ieee80211_resume(struct wiphy *wiphy)
1319 {
1320         return __ieee80211_resume(wiphy_priv(wiphy));
1321 }
1322 #else
1323 #define ieee80211_suspend NULL
1324 #define ieee80211_resume NULL
1325 #endif
1326
1327 static int ieee80211_scan(struct wiphy *wiphy,
1328                           struct net_device *dev,
1329                           struct cfg80211_scan_request *req)
1330 {
1331         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1332
1333         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1334         case NL80211_IFTYPE_STATION:
1335         case NL80211_IFTYPE_ADHOC:
1336         case NL80211_IFTYPE_MESH_POINT:
1337         case NL80211_IFTYPE_P2P_CLIENT:
1338                 break;
1339         case NL80211_IFTYPE_P2P_GO:
1340                 if (sdata->local->ops->hw_scan)
1341                         break;
1342                 /*
1343                  * FIXME: implement NoA while scanning in software,
1344                  * for now fall through to allow scanning only when
1345                  * beaconing hasn't been configured yet
1346                  */
1347         case NL80211_IFTYPE_AP:
1348                 if (sdata->u.ap.beacon)
1349                         return -EOPNOTSUPP;
1350                 break;
1351         default:
1352                 return -EOPNOTSUPP;
1353         }
1354
1355         return ieee80211_request_scan(sdata, req);
1356 }
1357
1358 static int
1359 ieee80211_sched_scan_start(struct wiphy *wiphy,
1360                            struct net_device *dev,
1361                            struct cfg80211_sched_scan_request *req)
1362 {
1363         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1364
1365         if (!sdata->local->ops->sched_scan_start)
1366                 return -EOPNOTSUPP;
1367
1368         return ieee80211_request_sched_scan_start(sdata, req);
1369 }
1370
1371 static int
1372 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1373 {
1374         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1375
1376         if (!sdata->local->ops->sched_scan_stop)
1377                 return -EOPNOTSUPP;
1378
1379         return ieee80211_request_sched_scan_stop(sdata);
1380 }
1381
1382 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1383                           struct cfg80211_auth_request *req)
1384 {
1385         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1386 }
1387
1388 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1389                            struct cfg80211_assoc_request *req)
1390 {
1391         struct ieee80211_local *local = wiphy_priv(wiphy);
1392         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1393
1394         switch (ieee80211_get_channel_mode(local, sdata)) {
1395         case CHAN_MODE_HOPPING:
1396                 return -EBUSY;
1397         case CHAN_MODE_FIXED:
1398                 if (local->oper_channel == req->bss->channel)
1399                         break;
1400                 return -EBUSY;
1401         case CHAN_MODE_UNDEFINED:
1402                 break;
1403         }
1404
1405         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1406 }
1407
1408 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1409                             struct cfg80211_deauth_request *req,
1410                             void *cookie)
1411 {
1412         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1413                                     req, cookie);
1414 }
1415
1416 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1417                               struct cfg80211_disassoc_request *req,
1418                               void *cookie)
1419 {
1420         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1421                                       req, cookie);
1422 }
1423
1424 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1425                                struct cfg80211_ibss_params *params)
1426 {
1427         struct ieee80211_local *local = wiphy_priv(wiphy);
1428         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1429
1430         switch (ieee80211_get_channel_mode(local, sdata)) {
1431         case CHAN_MODE_HOPPING:
1432                 return -EBUSY;
1433         case CHAN_MODE_FIXED:
1434                 if (!params->channel_fixed)
1435                         return -EBUSY;
1436                 if (local->oper_channel == params->channel)
1437                         break;
1438                 return -EBUSY;
1439         case CHAN_MODE_UNDEFINED:
1440                 break;
1441         }
1442
1443         return ieee80211_ibss_join(sdata, params);
1444 }
1445
1446 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1447 {
1448         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1449
1450         return ieee80211_ibss_leave(sdata);
1451 }
1452
1453 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1454 {
1455         struct ieee80211_local *local = wiphy_priv(wiphy);
1456         int err;
1457
1458         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1459                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1460
1461                 if (err)
1462                         return err;
1463         }
1464
1465         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1466                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1467
1468                 if (err)
1469                         return err;
1470         }
1471
1472         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1473                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1474
1475                 if (err)
1476                         return err;
1477         }
1478
1479         if (changed & WIPHY_PARAM_RETRY_SHORT)
1480                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1481         if (changed & WIPHY_PARAM_RETRY_LONG)
1482                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1483         if (changed &
1484             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1485                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1486
1487         return 0;
1488 }
1489
1490 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1491                                   enum nl80211_tx_power_setting type, int mbm)
1492 {
1493         struct ieee80211_local *local = wiphy_priv(wiphy);
1494         struct ieee80211_channel *chan = local->hw.conf.channel;
1495         u32 changes = 0;
1496
1497         switch (type) {
1498         case NL80211_TX_POWER_AUTOMATIC:
1499                 local->user_power_level = -1;
1500                 break;
1501         case NL80211_TX_POWER_LIMITED:
1502                 if (mbm < 0 || (mbm % 100))
1503                         return -EOPNOTSUPP;
1504                 local->user_power_level = MBM_TO_DBM(mbm);
1505                 break;
1506         case NL80211_TX_POWER_FIXED:
1507                 if (mbm < 0 || (mbm % 100))
1508                         return -EOPNOTSUPP;
1509                 /* TODO: move to cfg80211 when it knows the channel */
1510                 if (MBM_TO_DBM(mbm) > chan->max_power)
1511                         return -EINVAL;
1512                 local->user_power_level = MBM_TO_DBM(mbm);
1513                 break;
1514         }
1515
1516         ieee80211_hw_config(local, changes);
1517
1518         return 0;
1519 }
1520
1521 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1522 {
1523         struct ieee80211_local *local = wiphy_priv(wiphy);
1524
1525         *dbm = local->hw.conf.power_level;
1526
1527         return 0;
1528 }
1529
1530 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1531                                   const u8 *addr)
1532 {
1533         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1534
1535         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1536
1537         return 0;
1538 }
1539
1540 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1541 {
1542         struct ieee80211_local *local = wiphy_priv(wiphy);
1543
1544         drv_rfkill_poll(local);
1545 }
1546
1547 #ifdef CONFIG_NL80211_TESTMODE
1548 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1549 {
1550         struct ieee80211_local *local = wiphy_priv(wiphy);
1551
1552         if (!local->ops->testmode_cmd)
1553                 return -EOPNOTSUPP;
1554
1555         return local->ops->testmode_cmd(&local->hw, data, len);
1556 }
1557 #endif
1558
1559 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1560                              enum ieee80211_smps_mode smps_mode)
1561 {
1562         const u8 *ap;
1563         enum ieee80211_smps_mode old_req;
1564         int err;
1565
1566         lockdep_assert_held(&sdata->u.mgd.mtx);
1567
1568         old_req = sdata->u.mgd.req_smps;
1569         sdata->u.mgd.req_smps = smps_mode;
1570
1571         if (old_req == smps_mode &&
1572             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1573                 return 0;
1574
1575         /*
1576          * If not associated, or current association is not an HT
1577          * association, there's no need to send an action frame.
1578          */
1579         if (!sdata->u.mgd.associated ||
1580             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1581                 mutex_lock(&sdata->local->iflist_mtx);
1582                 ieee80211_recalc_smps(sdata->local);
1583                 mutex_unlock(&sdata->local->iflist_mtx);
1584                 return 0;
1585         }
1586
1587         ap = sdata->u.mgd.associated->bssid;
1588
1589         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1590                 if (sdata->u.mgd.powersave)
1591                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1592                 else
1593                         smps_mode = IEEE80211_SMPS_OFF;
1594         }
1595
1596         /* send SM PS frame to AP */
1597         err = ieee80211_send_smps_action(sdata, smps_mode,
1598                                          ap, ap);
1599         if (err)
1600                 sdata->u.mgd.req_smps = old_req;
1601
1602         return err;
1603 }
1604
1605 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1606                                     bool enabled, int timeout)
1607 {
1608         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1609         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1610
1611         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1612                 return -EOPNOTSUPP;
1613
1614         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1615                 return -EOPNOTSUPP;
1616
1617         if (enabled == sdata->u.mgd.powersave &&
1618             timeout == local->dynamic_ps_forced_timeout)
1619                 return 0;
1620
1621         sdata->u.mgd.powersave = enabled;
1622         local->dynamic_ps_forced_timeout = timeout;
1623
1624         /* no change, but if automatic follow powersave */
1625         mutex_lock(&sdata->u.mgd.mtx);
1626         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1627         mutex_unlock(&sdata->u.mgd.mtx);
1628
1629         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1630                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1631
1632         ieee80211_recalc_ps(local, -1);
1633
1634         return 0;
1635 }
1636
1637 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1638                                          struct net_device *dev,
1639                                          s32 rssi_thold, u32 rssi_hyst)
1640 {
1641         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1642         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1643         struct ieee80211_vif *vif = &sdata->vif;
1644         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1645
1646         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1647             rssi_hyst == bss_conf->cqm_rssi_hyst)
1648                 return 0;
1649
1650         bss_conf->cqm_rssi_thold = rssi_thold;
1651         bss_conf->cqm_rssi_hyst = rssi_hyst;
1652
1653         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1654                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1655                         return -EOPNOTSUPP;
1656                 return 0;
1657         }
1658
1659         /* tell the driver upon association, unless already associated */
1660         if (sdata->u.mgd.associated)
1661                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1662
1663         return 0;
1664 }
1665
1666 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1667                                       struct net_device *dev,
1668                                       const u8 *addr,
1669                                       const struct cfg80211_bitrate_mask *mask)
1670 {
1671         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1672         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1673         int i, ret;
1674
1675         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1676                 ret = drv_set_bitrate_mask(local, sdata, mask);
1677                 if (ret)
1678                         return ret;
1679         }
1680
1681         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1682                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1683
1684         return 0;
1685 }
1686
1687 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1688                                           struct net_device *dev,
1689                                           struct ieee80211_channel *chan,
1690                                           enum nl80211_channel_type chantype,
1691                                           unsigned int duration, u64 *cookie)
1692 {
1693         int ret;
1694         u32 random_cookie;
1695
1696         lockdep_assert_held(&local->mtx);
1697
1698         if (local->hw_roc_cookie)
1699                 return -EBUSY;
1700         /* must be nonzero */
1701         random_cookie = random32() | 1;
1702
1703         *cookie = random_cookie;
1704         local->hw_roc_dev = dev;
1705         local->hw_roc_cookie = random_cookie;
1706         local->hw_roc_channel = chan;
1707         local->hw_roc_channel_type = chantype;
1708         local->hw_roc_duration = duration;
1709         ret = drv_remain_on_channel(local, chan, chantype, duration);
1710         if (ret) {
1711                 local->hw_roc_channel = NULL;
1712                 local->hw_roc_cookie = 0;
1713         }
1714
1715         return ret;
1716 }
1717
1718 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1719                                        struct net_device *dev,
1720                                        struct ieee80211_channel *chan,
1721                                        enum nl80211_channel_type channel_type,
1722                                        unsigned int duration,
1723                                        u64 *cookie)
1724 {
1725         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1726         struct ieee80211_local *local = sdata->local;
1727
1728         if (local->ops->remain_on_channel) {
1729                 int ret;
1730
1731                 mutex_lock(&local->mtx);
1732                 ret = ieee80211_remain_on_channel_hw(local, dev,
1733                                                      chan, channel_type,
1734                                                      duration, cookie);
1735                 local->hw_roc_for_tx = false;
1736                 mutex_unlock(&local->mtx);
1737
1738                 return ret;
1739         }
1740
1741         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1742                                               duration, cookie);
1743 }
1744
1745 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1746                                                  u64 cookie)
1747 {
1748         int ret;
1749
1750         lockdep_assert_held(&local->mtx);
1751
1752         if (local->hw_roc_cookie != cookie)
1753                 return -ENOENT;
1754
1755         ret = drv_cancel_remain_on_channel(local);
1756         if (ret)
1757                 return ret;
1758
1759         local->hw_roc_cookie = 0;
1760         local->hw_roc_channel = NULL;
1761
1762         ieee80211_recalc_idle(local);
1763
1764         return 0;
1765 }
1766
1767 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1768                                               struct net_device *dev,
1769                                               u64 cookie)
1770 {
1771         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1772         struct ieee80211_local *local = sdata->local;
1773
1774         if (local->ops->cancel_remain_on_channel) {
1775                 int ret;
1776
1777                 mutex_lock(&local->mtx);
1778                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1779                 mutex_unlock(&local->mtx);
1780
1781                 return ret;
1782         }
1783
1784         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1785 }
1786
1787 static enum work_done_result
1788 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1789 {
1790         /*
1791          * Use the data embedded in the work struct for reporting
1792          * here so if the driver mangled the SKB before dropping
1793          * it (which is the only way we really should get here)
1794          * then we don't report mangled data.
1795          *
1796          * If there was no wait time, then by the time we get here
1797          * the driver will likely not have reported the status yet,
1798          * so in that case userspace will have to deal with it.
1799          */
1800
1801         if (wk->offchan_tx.wait && wk->offchan_tx.frame)
1802                 cfg80211_mgmt_tx_status(wk->sdata->dev,
1803                                         (unsigned long) wk->offchan_tx.frame,
1804                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
1805
1806         return WORK_DONE_DESTROY;
1807 }
1808
1809 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1810                              struct ieee80211_channel *chan, bool offchan,
1811                              enum nl80211_channel_type channel_type,
1812                              bool channel_type_valid, unsigned int wait,
1813                              const u8 *buf, size_t len, u64 *cookie)
1814 {
1815         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1816         struct ieee80211_local *local = sdata->local;
1817         struct sk_buff *skb;
1818         struct sta_info *sta;
1819         struct ieee80211_work *wk;
1820         const struct ieee80211_mgmt *mgmt = (void *)buf;
1821         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1822                     IEEE80211_TX_CTL_REQ_TX_STATUS;
1823         bool is_offchan = false;
1824
1825         /* Check that we are on the requested channel for transmission */
1826         if (chan != local->tmp_channel &&
1827             chan != local->oper_channel)
1828                 is_offchan = true;
1829         if (channel_type_valid &&
1830             (channel_type != local->tmp_channel_type &&
1831              channel_type != local->_oper_channel_type))
1832                 is_offchan = true;
1833
1834         if (chan == local->hw_roc_channel) {
1835                 /* TODO: check channel type? */
1836                 is_offchan = false;
1837                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1838         }
1839
1840         if (is_offchan && !offchan)
1841                 return -EBUSY;
1842
1843         switch (sdata->vif.type) {
1844         case NL80211_IFTYPE_ADHOC:
1845         case NL80211_IFTYPE_AP:
1846         case NL80211_IFTYPE_AP_VLAN:
1847         case NL80211_IFTYPE_P2P_GO:
1848         case NL80211_IFTYPE_MESH_POINT:
1849                 if (!ieee80211_is_action(mgmt->frame_control) ||
1850                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1851                         break;
1852                 rcu_read_lock();
1853                 sta = sta_info_get(sdata, mgmt->da);
1854                 rcu_read_unlock();
1855                 if (!sta)
1856                         return -ENOLINK;
1857                 break;
1858         case NL80211_IFTYPE_STATION:
1859         case NL80211_IFTYPE_P2P_CLIENT:
1860                 break;
1861         default:
1862                 return -EOPNOTSUPP;
1863         }
1864
1865         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1866         if (!skb)
1867                 return -ENOMEM;
1868         skb_reserve(skb, local->hw.extra_tx_headroom);
1869
1870         memcpy(skb_put(skb, len), buf, len);
1871
1872         IEEE80211_SKB_CB(skb)->flags = flags;
1873
1874         skb->dev = sdata->dev;
1875
1876         *cookie = (unsigned long) skb;
1877
1878         if (is_offchan && local->ops->offchannel_tx) {
1879                 int ret;
1880
1881                 IEEE80211_SKB_CB(skb)->band = chan->band;
1882
1883                 mutex_lock(&local->mtx);
1884
1885                 if (local->hw_offchan_tx_cookie) {
1886                         mutex_unlock(&local->mtx);
1887                         return -EBUSY;
1888                 }
1889
1890                 /* TODO: bitrate control, TX processing? */
1891                 ret = drv_offchannel_tx(local, skb, chan, channel_type, wait);
1892
1893                 if (ret == 0)
1894                         local->hw_offchan_tx_cookie = *cookie;
1895                 mutex_unlock(&local->mtx);
1896
1897                 /*
1898                  * Allow driver to return 1 to indicate it wants to have the
1899                  * frame transmitted with a remain_on_channel + regular TX.
1900                  */
1901                 if (ret != 1)
1902                         return ret;
1903         }
1904
1905         if (is_offchan && local->ops->remain_on_channel) {
1906                 unsigned int duration;
1907                 int ret;
1908
1909                 mutex_lock(&local->mtx);
1910                 /*
1911                  * If the duration is zero, then the driver
1912                  * wouldn't actually do anything. Set it to
1913                  * 100 for now.
1914                  *
1915                  * TODO: cancel the off-channel operation
1916                  *       when we get the SKB's TX status and
1917                  *       the wait time was zero before.
1918                  */
1919                 duration = 100;
1920                 if (wait)
1921                         duration = wait;
1922                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
1923                                                      channel_type,
1924                                                      duration, cookie);
1925                 if (ret) {
1926                         kfree_skb(skb);
1927                         mutex_unlock(&local->mtx);
1928                         return ret;
1929                 }
1930
1931                 local->hw_roc_for_tx = true;
1932                 local->hw_roc_duration = wait;
1933
1934                 /*
1935                  * queue up frame for transmission after
1936                  * ieee80211_ready_on_channel call
1937                  */
1938
1939                 /* modify cookie to prevent API mismatches */
1940                 *cookie ^= 2;
1941                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1942                 local->hw_roc_skb = skb;
1943                 local->hw_roc_skb_for_status = skb;
1944                 mutex_unlock(&local->mtx);
1945
1946                 return 0;
1947         }
1948
1949         /*
1950          * Can transmit right away if the channel was the
1951          * right one and there's no wait involved... If a
1952          * wait is involved, we might otherwise not be on
1953          * the right channel for long enough!
1954          */
1955         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
1956                 ieee80211_tx_skb(sdata, skb);
1957                 return 0;
1958         }
1959
1960         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
1961         if (!wk) {
1962                 kfree_skb(skb);
1963                 return -ENOMEM;
1964         }
1965
1966         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
1967         wk->chan = chan;
1968         wk->chan_type = channel_type;
1969         wk->sdata = sdata;
1970         wk->done = ieee80211_offchan_tx_done;
1971         wk->offchan_tx.frame = skb;
1972         wk->offchan_tx.wait = wait;
1973         wk->ie_len = len;
1974         memcpy(wk->ie, buf, len);
1975
1976         ieee80211_add_work(wk);
1977         return 0;
1978 }
1979
1980 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1981                                          struct net_device *dev,
1982                                          u64 cookie)
1983 {
1984         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1985         struct ieee80211_local *local = sdata->local;
1986         struct ieee80211_work *wk;
1987         int ret = -ENOENT;
1988
1989         mutex_lock(&local->mtx);
1990
1991         if (local->ops->offchannel_tx_cancel_wait &&
1992             local->hw_offchan_tx_cookie == cookie) {
1993                 ret = drv_offchannel_tx_cancel_wait(local);
1994
1995                 if (!ret)
1996                         local->hw_offchan_tx_cookie = 0;
1997
1998                 mutex_unlock(&local->mtx);
1999
2000                 return ret;
2001         }
2002
2003         if (local->ops->cancel_remain_on_channel) {
2004                 cookie ^= 2;
2005                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2006
2007                 if (ret == 0) {
2008                         kfree_skb(local->hw_roc_skb);
2009                         local->hw_roc_skb = NULL;
2010                         local->hw_roc_skb_for_status = NULL;
2011                 }
2012
2013                 mutex_unlock(&local->mtx);
2014
2015                 return ret;
2016         }
2017
2018         list_for_each_entry(wk, &local->work_list, list) {
2019                 if (wk->sdata != sdata)
2020                         continue;
2021
2022                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2023                         continue;
2024
2025                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2026                         continue;
2027
2028                 wk->timeout = jiffies;
2029
2030                 ieee80211_queue_work(&local->hw, &local->work_work);
2031                 ret = 0;
2032                 break;
2033         }
2034         mutex_unlock(&local->mtx);
2035
2036         return ret;
2037 }
2038
2039 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2040                                           struct net_device *dev,
2041                                           u16 frame_type, bool reg)
2042 {
2043         struct ieee80211_local *local = wiphy_priv(wiphy);
2044
2045         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2046                 return;
2047
2048         if (reg)
2049                 local->probe_req_reg++;
2050         else
2051                 local->probe_req_reg--;
2052
2053         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2054 }
2055
2056 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2057 {
2058         struct ieee80211_local *local = wiphy_priv(wiphy);
2059
2060         if (local->started)
2061                 return -EOPNOTSUPP;
2062
2063         return drv_set_antenna(local, tx_ant, rx_ant);
2064 }
2065
2066 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2067 {
2068         struct ieee80211_local *local = wiphy_priv(wiphy);
2069
2070         return drv_get_antenna(local, tx_ant, rx_ant);
2071 }
2072
2073 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2074 {
2075         struct ieee80211_local *local = wiphy_priv(wiphy);
2076
2077         return drv_set_ringparam(local, tx, rx);
2078 }
2079
2080 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2081                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2082 {
2083         struct ieee80211_local *local = wiphy_priv(wiphy);
2084
2085         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2086 }
2087
2088 struct cfg80211_ops mac80211_config_ops = {
2089         .add_virtual_intf = ieee80211_add_iface,
2090         .del_virtual_intf = ieee80211_del_iface,
2091         .change_virtual_intf = ieee80211_change_iface,
2092         .add_key = ieee80211_add_key,
2093         .del_key = ieee80211_del_key,
2094         .get_key = ieee80211_get_key,
2095         .set_default_key = ieee80211_config_default_key,
2096         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2097         .add_beacon = ieee80211_add_beacon,
2098         .set_beacon = ieee80211_set_beacon,
2099         .del_beacon = ieee80211_del_beacon,
2100         .add_station = ieee80211_add_station,
2101         .del_station = ieee80211_del_station,
2102         .change_station = ieee80211_change_station,
2103         .get_station = ieee80211_get_station,
2104         .dump_station = ieee80211_dump_station,
2105         .dump_survey = ieee80211_dump_survey,
2106 #ifdef CONFIG_MAC80211_MESH
2107         .add_mpath = ieee80211_add_mpath,
2108         .del_mpath = ieee80211_del_mpath,
2109         .change_mpath = ieee80211_change_mpath,
2110         .get_mpath = ieee80211_get_mpath,
2111         .dump_mpath = ieee80211_dump_mpath,
2112         .update_mesh_config = ieee80211_update_mesh_config,
2113         .get_mesh_config = ieee80211_get_mesh_config,
2114         .join_mesh = ieee80211_join_mesh,
2115         .leave_mesh = ieee80211_leave_mesh,
2116 #endif
2117         .change_bss = ieee80211_change_bss,
2118         .set_txq_params = ieee80211_set_txq_params,
2119         .set_channel = ieee80211_set_channel,
2120         .suspend = ieee80211_suspend,
2121         .resume = ieee80211_resume,
2122         .scan = ieee80211_scan,
2123         .sched_scan_start = ieee80211_sched_scan_start,
2124         .sched_scan_stop = ieee80211_sched_scan_stop,
2125         .auth = ieee80211_auth,
2126         .assoc = ieee80211_assoc,
2127         .deauth = ieee80211_deauth,
2128         .disassoc = ieee80211_disassoc,
2129         .join_ibss = ieee80211_join_ibss,
2130         .leave_ibss = ieee80211_leave_ibss,
2131         .set_wiphy_params = ieee80211_set_wiphy_params,
2132         .set_tx_power = ieee80211_set_tx_power,
2133         .get_tx_power = ieee80211_get_tx_power,
2134         .set_wds_peer = ieee80211_set_wds_peer,
2135         .rfkill_poll = ieee80211_rfkill_poll,
2136         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2137         .set_power_mgmt = ieee80211_set_power_mgmt,
2138         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2139         .remain_on_channel = ieee80211_remain_on_channel,
2140         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2141         .mgmt_tx = ieee80211_mgmt_tx,
2142         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2143         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2144         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2145         .set_antenna = ieee80211_set_antenna,
2146         .get_antenna = ieee80211_get_antenna,
2147         .set_ringparam = ieee80211_set_ringparam,
2148         .get_ringparam = ieee80211_get_ringparam,
2149 };