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 (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
  64                 ieee80211_sdata_set_mesh_id(sdata,
  65                                             params->mesh_id_len,
  66                                             params->mesh_id);
  67
  68         if (type == NL80211_IFTYPE_AP_VLAN &&
  69             params && params->use_4addr == 0)
  70                 rcu_assign_pointer(sdata->u.vlan.sta, NULL);
  71         else if (type == NL80211_IFTYPE_STATION &&
  72                  params && params->use_4addr >= 0)
  73                 sdata->u.mgd.use_4addr = params->use_4addr;
  74
  75         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  76                 struct ieee80211_local *local = sdata->local;
  77
  78                 if (ieee80211_sdata_running(sdata)) {
  79                         /*
  80                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  81                          * changed while the interface is up.
  82                          * Else we would need to add a lot of cruft
  83                          * to update everything:
  84                          *      cooked_mntrs, monitor and all fif_* counters
  85                          *      reconfigure hardware
  86                          */
  87                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  88                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  89                                 return -EBUSY;
  90
  91                         ieee80211_adjust_monitor_flags(sdata, -1);
  92                         sdata->u.mntr_flags = *flags;
  93                         ieee80211_adjust_monitor_flags(sdata, 1);
  94
  95                         ieee80211_configure_filter(local);
  96                 } else {
  97                         /*
  98                          * Because the interface is down, ieee80211_do_stop
  99                          * and ieee80211_do_open take care of "everything"
 100                          * mentioned in the comment above.
 101                          */
 102                         sdata->u.mntr_flags = *flags;
 103                 }
 104         }
 105
 106         return 0;
 107 }
 108
 109 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 110                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 111                              struct key_params *params)
 112 {
 113         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 114         struct sta_info *sta = NULL;
 115         struct ieee80211_key *key;
 116         int err;
 117
 118         if (!ieee80211_sdata_running(sdata))
 119                 return -ENETDOWN;
 120
 121         /* reject WEP and TKIP keys if WEP failed to initialize */
 122         switch (params->cipher) {
 123         case WLAN_CIPHER_SUITE_WEP40:
 124         case WLAN_CIPHER_SUITE_TKIP:
 125         case WLAN_CIPHER_SUITE_WEP104:
 126                 if (IS_ERR(sdata->local->wep_tx_tfm))
 127                         return -EINVAL;
 128                 break;
 129         default:
 130                 break;
 131         }
 132
 133         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 134                                   params->key, params->seq_len, params->seq);
 135         if (IS_ERR(key))
 136                 return PTR_ERR(key);
 137
 138         if (pairwise)
 139                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 140
 141         mutex_lock(&sdata->local->sta_mtx);
 142
 143         if (mac_addr) {
 144                 sta = sta_info_get_bss(sdata, mac_addr);
 145                 if (!sta) {
 146                         ieee80211_key_free(sdata->local, key);
 147                         err = -ENOENT;
 148                         goto out_unlock;
 149                 }
 150         }
 151
 152         err = ieee80211_key_link(key, sdata, sta);
 153         if (err)
 154                 ieee80211_key_free(sdata->local, key);
 155
 156  out_unlock:
 157         mutex_unlock(&sdata->local->sta_mtx);
 158
 159         return err;
 160 }
 161
 162 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 163                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 164 {
 165         struct ieee80211_sub_if_data *sdata;
 166         struct sta_info *sta;
 167         int ret;
 168
 169         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 170
 171         mutex_lock(&sdata->local->sta_mtx);
 172
 173         if (mac_addr) {
 174                 ret = -ENOENT;
 175
 176                 sta = sta_info_get_bss(sdata, mac_addr);
 177                 if (!sta)
 178                         goto out_unlock;
 179
 180                 if (pairwise) {
 181                         if (sta->ptk) {
 182                                 ieee80211_key_free(sdata->local, sta->ptk);
 183                                 ret = 0;
 184                         }
 185                 } else {
 186                         if (sta->gtk[key_idx]) {
 187                                 ieee80211_key_free(sdata->local,
 188                                                    sta->gtk[key_idx]);
 189                                 ret = 0;
 190                         }
 191                 }
 192
 193                 goto out_unlock;
 194         }
 195
 196         if (!sdata->keys[key_idx]) {
 197                 ret = -ENOENT;
 198                 goto out_unlock;
 199         }
 200
 201         ieee80211_key_free(sdata->local, sdata->keys[key_idx]);
 202         WARN_ON(sdata->keys[key_idx]);
 203
 204         ret = 0;
 205  out_unlock:
 206         mutex_unlock(&sdata->local->sta_mtx);
 207
 208         return ret;
 209 }
 210
 211 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 212                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 213                              void *cookie,
 214                              void (*callback)(void *cookie,
 215                                               struct key_params *params))
 216 {
 217         struct ieee80211_sub_if_data *sdata;
 218         struct sta_info *sta = NULL;
 219         u8 seq[6] = {0};
 220         struct key_params params;
 221         struct ieee80211_key *key = NULL;
 222         u32 iv32;
 223         u16 iv16;
 224         int err = -ENOENT;
 225
 226         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 227
 228         rcu_read_lock();
 229
 230         if (mac_addr) {
 231                 sta = sta_info_get_bss(sdata, mac_addr);
 232                 if (!sta)
 233                         goto out;
 234
 235                 if (pairwise)
 236                         key = sta->ptk;
 237                 else if (key_idx < NUM_DEFAULT_KEYS)
 238                         key = sta->gtk[key_idx];
 239         } else
 240                 key = sdata->keys[key_idx];
 241
 242         if (!key)
 243                 goto out;
 244
 245         memset(&params, 0, sizeof(params));
 246
 247         params.cipher = key->conf.cipher;
 248
 249         switch (key->conf.cipher) {
 250         case WLAN_CIPHER_SUITE_TKIP:
 251                 iv32 = key->u.tkip.tx.iv32;
 252                 iv16 = key->u.tkip.tx.iv16;
 253
 254                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 255                         drv_get_tkip_seq(sdata->local,
 256                                          key->conf.hw_key_idx,
 257                                          &iv32, &iv16);
 258
 259                 seq[0] = iv16 & 0xff;
 260                 seq[1] = (iv16 >> 8) & 0xff;
 261                 seq[2] = iv32 & 0xff;
 262                 seq[3] = (iv32 >> 8) & 0xff;
 263                 seq[4] = (iv32 >> 16) & 0xff;
 264                 seq[5] = (iv32 >> 24) & 0xff;
 265                 params.seq = seq;
 266                 params.seq_len = 6;
 267                 break;
 268         case WLAN_CIPHER_SUITE_CCMP:
 269                 seq[0] = key->u.ccmp.tx_pn[5];
 270                 seq[1] = key->u.ccmp.tx_pn[4];
 271                 seq[2] = key->u.ccmp.tx_pn[3];
 272                 seq[3] = key->u.ccmp.tx_pn[2];
 273                 seq[4] = key->u.ccmp.tx_pn[1];
 274                 seq[5] = key->u.ccmp.tx_pn[0];
 275                 params.seq = seq;
 276                 params.seq_len = 6;
 277                 break;
 278         case WLAN_CIPHER_SUITE_AES_CMAC:
 279                 seq[0] = key->u.aes_cmac.tx_pn[5];
 280                 seq[1] = key->u.aes_cmac.tx_pn[4];
 281                 seq[2] = key->u.aes_cmac.tx_pn[3];
 282                 seq[3] = key->u.aes_cmac.tx_pn[2];
 283                 seq[4] = key->u.aes_cmac.tx_pn[1];
 284                 seq[5] = key->u.aes_cmac.tx_pn[0];
 285                 params.seq = seq;
 286                 params.seq_len = 6;
 287                 break;
 288         }
 289
 290         params.key = key->conf.key;
 291         params.key_len = key->conf.keylen;
 292
 293         callback(cookie, &params);
 294         err = 0;
 295
 296  out:
 297         rcu_read_unlock();
 298         return err;
 299 }
 300
 301 static int ieee80211_config_default_key(struct wiphy *wiphy,
 302                                         struct net_device *dev,
 303                                         u8 key_idx)
 304 {
 305         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 306
 307         ieee80211_set_default_key(sdata, key_idx);
 308
 309         return 0;
 310 }
 311
 312 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 313                                              struct net_device *dev,
 314                                              u8 key_idx)
 315 {
 316         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 317
 318         ieee80211_set_default_mgmt_key(sdata, key_idx);
 319
 320         return 0;
 321 }
 322
 323 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 324 {
 325         struct ieee80211_sub_if_data *sdata = sta->sdata;
 326
 327         sinfo->generation = sdata->local->sta_generation;
 328
 329         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 330                         STATION_INFO_RX_BYTES |
 331                         STATION_INFO_TX_BYTES |
 332                         STATION_INFO_RX_PACKETS |
 333                         STATION_INFO_TX_PACKETS |
 334                         STATION_INFO_TX_RETRIES |
 335                         STATION_INFO_TX_FAILED |
 336                         STATION_INFO_TX_BITRATE |
 337                         STATION_INFO_RX_DROP_MISC;
 338
 339         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 340         sinfo->rx_bytes = sta->rx_bytes;
 341         sinfo->tx_bytes = sta->tx_bytes;
 342         sinfo->rx_packets = sta->rx_packets;
 343         sinfo->tx_packets = sta->tx_packets;
 344         sinfo->tx_retries = sta->tx_retry_count;
 345         sinfo->tx_failed = sta->tx_retry_failed;
 346         sinfo->rx_dropped_misc = sta->rx_dropped;
 347
 348         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 349             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 350                 sinfo->filled |= STATION_INFO_SIGNAL;
 351                 sinfo->signal = (s8)sta->last_signal;
 352         }
 353
 354         sinfo->txrate.flags = 0;
 355         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 356                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 357         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 358                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 359         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 360                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 361
 362         if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) {
 363                 struct ieee80211_supported_band *sband;
 364                 sband = sta->local->hw.wiphy->bands[
 365                                 sta->local->hw.conf.channel->band];
 366                 sinfo->txrate.legacy =
 367                         sband->bitrates[sta->last_tx_rate.idx].bitrate;
 368         } else
 369                 sinfo->txrate.mcs = sta->last_tx_rate.idx;
 370
 371         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 372 #ifdef CONFIG_MAC80211_MESH
 373                 sinfo->filled |= STATION_INFO_LLID |
 374                                  STATION_INFO_PLID |
 375                                  STATION_INFO_PLINK_STATE;
 376
 377                 sinfo->llid = le16_to_cpu(sta->llid);
 378                 sinfo->plid = le16_to_cpu(sta->plid);
 379                 sinfo->plink_state = sta->plink_state;
 380 #endif
 381         }
 382 }
 383
 384
 385 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 386                                  int idx, u8 *mac, struct station_info *sinfo)
 387 {
 388         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 389         struct sta_info *sta;
 390         int ret = -ENOENT;
 391
 392         rcu_read_lock();
 393
 394         sta = sta_info_get_by_idx(sdata, idx);
 395         if (sta) {
 396                 ret = 0;
 397                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 398                 sta_set_sinfo(sta, sinfo);
 399         }
 400
 401         rcu_read_unlock();
 402
 403         return ret;
 404 }
 405
 406 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 407                                  int idx, struct survey_info *survey)
 408 {
 409         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 410
 411         return drv_get_survey(local, idx, survey);
 412 }
 413
 414 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 415                                  u8 *mac, struct station_info *sinfo)
 416 {
 417         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 418         struct sta_info *sta;
 419         int ret = -ENOENT;
 420
 421         rcu_read_lock();
 422
 423         sta = sta_info_get_bss(sdata, mac);
 424         if (sta) {
 425                 ret = 0;
 426                 sta_set_sinfo(sta, sinfo);
 427         }
 428
 429         rcu_read_unlock();
 430
 431         return ret;
 432 }
 433
 434 /*
 435  * This handles both adding a beacon and setting new beacon info
 436  */
 437 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 438                                    struct beacon_parameters *params)
 439 {
 440         struct beacon_data *new, *old;
 441         int new_head_len, new_tail_len;
 442         int size;
 443         int err = -EINVAL;
 444
 445         old = sdata->u.ap.beacon;
 446
 447         /* head must not be zero-length */
 448         if (params->head && !params->head_len)
 449                 return -EINVAL;
 450
 451         /*
 452          * This is a kludge. beacon interval should really be part
 453          * of the beacon information.
 454          */
 455         if (params->interval &&
 456             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 457                 sdata->vif.bss_conf.beacon_int = params->interval;
 458                 ieee80211_bss_info_change_notify(sdata,
 459                                                  BSS_CHANGED_BEACON_INT);
 460         }
 461
 462         /* Need to have a beacon head if we don't have one yet */
 463         if (!params->head && !old)
 464                 return err;
 465
 466         /* sorry, no way to start beaconing without dtim period */
 467         if (!params->dtim_period && !old)
 468                 return err;
 469
 470         /* new or old head? */
 471         if (params->head)
 472                 new_head_len = params->head_len;
 473         else
 474                 new_head_len = old->head_len;
 475
 476         /* new or old tail? */
 477         if (params->tail || !old)
 478                 /* params->tail_len will be zero for !params->tail */
 479                 new_tail_len = params->tail_len;
 480         else
 481                 new_tail_len = old->tail_len;
 482
 483         size = sizeof(*new) + new_head_len + new_tail_len;
 484
 485         new = kzalloc(size, GFP_KERNEL);
 486         if (!new)
 487                 return -ENOMEM;
 488
 489         /* start filling the new info now */
 490
 491         /* new or old dtim period? */
 492         if (params->dtim_period)
 493                 new->dtim_period = params->dtim_period;
 494         else
 495                 new->dtim_period = old->dtim_period;
 496
 497         /*
 498          * pointers go into the block we allocated,
 499          * memory is | beacon_data | head | tail |
 500          */
 501         new->head = ((u8 *) new) + sizeof(*new);
 502         new->tail = new->head + new_head_len;
 503         new->head_len = new_head_len;
 504         new->tail_len = new_tail_len;
 505
 506         /* copy in head */
 507         if (params->head)
 508                 memcpy(new->head, params->head, new_head_len);
 509         else
 510                 memcpy(new->head, old->head, new_head_len);
 511
 512         /* copy in optional tail */
 513         if (params->tail)
 514                 memcpy(new->tail, params->tail, new_tail_len);
 515         else
 516                 if (old)
 517                         memcpy(new->tail, old->tail, new_tail_len);
 518
 519         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 520
 521         rcu_assign_pointer(sdata->u.ap.beacon, new);
 522
 523         synchronize_rcu();
 524
 525         kfree(old);
 526
 527         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 528                                                 BSS_CHANGED_BEACON);
 529         return 0;
 530 }
 531
 532 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 533                                 struct beacon_parameters *params)
 534 {
 535         struct ieee80211_sub_if_data *sdata;
 536         struct beacon_data *old;
 537
 538         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 539
 540         old = sdata->u.ap.beacon;
 541
 542         if (old)
 543                 return -EALREADY;
 544
 545         return ieee80211_config_beacon(sdata, params);
 546 }
 547
 548 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 549                                 struct beacon_parameters *params)
 550 {
 551         struct ieee80211_sub_if_data *sdata;
 552         struct beacon_data *old;
 553
 554         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 555
 556         old = sdata->u.ap.beacon;
 557
 558         if (!old)
 559                 return -ENOENT;
 560
 561         return ieee80211_config_beacon(sdata, params);
 562 }
 563
 564 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 565 {
 566         struct ieee80211_sub_if_data *sdata;
 567         struct beacon_data *old;
 568
 569         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 570
 571         old = sdata->u.ap.beacon;
 572
 573         if (!old)
 574                 return -ENOENT;
 575
 576         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 577         synchronize_rcu();
 578         kfree(old);
 579
 580         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 581         return 0;
 582 }
 583
 584 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 585 struct iapp_layer2_update {
 586         u8 da[ETH_ALEN];        /* broadcast */
 587         u8 sa[ETH_ALEN];        /* STA addr */
 588         __be16 len;             /* 6 */
 589         u8 dsap;                /* 0 */
 590         u8 ssap;                /* 0 */
 591         u8 control;
 592         u8 xid_info[3];
 593 } __packed;
 594
 595 static void ieee80211_send_layer2_update(struct sta_info *sta)
 596 {
 597         struct iapp_layer2_update *msg;
 598         struct sk_buff *skb;
 599
 600         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 601          * bridge devices */
 602
 603         skb = dev_alloc_skb(sizeof(*msg));
 604         if (!skb)
 605                 return;
 606         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 607
 608         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 609          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 610
 611         memset(msg->da, 0xff, ETH_ALEN);
 612         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 613         msg->len = htons(6);
 614         msg->dsap = 0;
 615         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 616         msg->control = 0xaf;    /* XID response lsb.1111F101.
 617                                  * F=0 (no poll command; unsolicited frame) */
 618         msg->xid_info[0] = 0x81;        /* XID format identifier */
 619         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 620         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 621
 622         skb->dev = sta->sdata->dev;
 623         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 624         memset(skb->cb, 0, sizeof(skb->cb));
 625         netif_rx_ni(skb);
 626 }
 627
 628 static void sta_apply_parameters(struct ieee80211_local *local,
 629                                  struct sta_info *sta,
 630                                  struct station_parameters *params)
 631 {
 632         unsigned long flags;
 633         u32 rates;
 634         int i, j;
 635         struct ieee80211_supported_band *sband;
 636         struct ieee80211_sub_if_data *sdata = sta->sdata;
 637         u32 mask, set;
 638
 639         sband = local->hw.wiphy->bands[local->oper_channel->band];
 640
 641         spin_lock_irqsave(&sta->flaglock, flags);
 642         mask = params->sta_flags_mask;
 643         set = params->sta_flags_set;
 644
 645         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 646                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 647                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 648                         sta->flags |= WLAN_STA_AUTHORIZED;
 649         }
 650
 651         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 652                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 653                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 654                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 655         }
 656
 657         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 658                 sta->flags &= ~WLAN_STA_WME;
 659                 if (set & BIT(NL80211_STA_FLAG_WME))
 660                         sta->flags |= WLAN_STA_WME;
 661         }
 662
 663         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 664                 sta->flags &= ~WLAN_STA_MFP;
 665                 if (set & BIT(NL80211_STA_FLAG_MFP))
 666                         sta->flags |= WLAN_STA_MFP;
 667         }
 668         spin_unlock_irqrestore(&sta->flaglock, flags);
 669
 670         /*
 671          * cfg80211 validates this (1-2007) and allows setting the AID
 672          * only when creating a new station entry
 673          */
 674         if (params->aid)
 675                 sta->sta.aid = params->aid;
 676
 677         /*
 678          * FIXME: updating the following information is racy when this
 679          *        function is called from ieee80211_change_station().
 680          *        However, all this information should be static so
 681          *        maybe we should just reject attemps to change it.
 682          */
 683
 684         if (params->listen_interval >= 0)
 685                 sta->listen_interval = params->listen_interval;
 686
 687         if (params->supported_rates) {
 688                 rates = 0;
 689
 690                 for (i = 0; i < params->supported_rates_len; i++) {
 691                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 692                         for (j = 0; j < sband->n_bitrates; j++) {
 693                                 if (sband->bitrates[j].bitrate == rate)
 694                                         rates |= BIT(j);
 695                         }
 696                 }
 697                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 698         }
 699
 700         if (params->ht_capa)
 701                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 702                                                   params->ht_capa,
 703                                                   &sta->sta.ht_cap);
 704
 705         if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
 706                 switch (params->plink_action) {
 707                 case PLINK_ACTION_OPEN:
 708                         mesh_plink_open(sta);
 709                         break;
 710                 case PLINK_ACTION_BLOCK:
 711                         mesh_plink_block(sta);
 712                         break;
 713                 }
 714         }
 715 }
 716
 717 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 718                                  u8 *mac, struct station_parameters *params)
 719 {
 720         struct ieee80211_local *local = wiphy_priv(wiphy);
 721         struct sta_info *sta;
 722         struct ieee80211_sub_if_data *sdata;
 723         int err;
 724         int layer2_update;
 725
 726         if (params->vlan) {
 727                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 728
 729                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 730                     sdata->vif.type != NL80211_IFTYPE_AP)
 731                         return -EINVAL;
 732         } else
 733                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 734
 735         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 736                 return -EINVAL;
 737
 738         if (is_multicast_ether_addr(mac))
 739                 return -EINVAL;
 740
 741         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 742         if (!sta)
 743                 return -ENOMEM;
 744
 745         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 746
 747         sta_apply_parameters(local, sta, params);
 748
 749         rate_control_rate_init(sta);
 750
 751         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 752                 sdata->vif.type == NL80211_IFTYPE_AP;
 753
 754         err = sta_info_insert_rcu(sta);
 755         if (err) {
 756                 rcu_read_unlock();
 757                 return err;
 758         }
 759
 760         if (layer2_update)
 761                 ieee80211_send_layer2_update(sta);
 762
 763         rcu_read_unlock();
 764
 765         return 0;
 766 }
 767
 768 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 769                                  u8 *mac)
 770 {
 771         struct ieee80211_local *local = wiphy_priv(wiphy);
 772         struct ieee80211_sub_if_data *sdata;
 773
 774         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 775
 776         if (mac)
 777                 return sta_info_destroy_addr_bss(sdata, mac);
 778
 779         sta_info_flush(local, sdata);
 780         return 0;
 781 }
 782
 783 static int ieee80211_change_station(struct wiphy *wiphy,
 784                                     struct net_device *dev,
 785                                     u8 *mac,
 786                                     struct station_parameters *params)
 787 {
 788         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 789         struct ieee80211_local *local = wiphy_priv(wiphy);
 790         struct sta_info *sta;
 791         struct ieee80211_sub_if_data *vlansdata;
 792
 793         rcu_read_lock();
 794
 795         sta = sta_info_get_bss(sdata, mac);
 796         if (!sta) {
 797                 rcu_read_unlock();
 798                 return -ENOENT;
 799         }
 800
 801         if (params->vlan && params->vlan != sta->sdata->dev) {
 802                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 803
 804                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 805                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 806                         rcu_read_unlock();
 807                         return -EINVAL;
 808                 }
 809
 810                 if (params->vlan->ieee80211_ptr->use_4addr) {
 811                         if (vlansdata->u.vlan.sta) {
 812                                 rcu_read_unlock();
 813                                 return -EBUSY;
 814                         }
 815
 816                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 817                 }
 818
 819                 sta->sdata = vlansdata;
 820                 ieee80211_send_layer2_update(sta);
 821         }
 822
 823         sta_apply_parameters(local, sta, params);
 824
 825         rcu_read_unlock();
 826
 827         return 0;
 828 }
 829
 830 #ifdef CONFIG_MAC80211_MESH
 831 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 832                                  u8 *dst, u8 *next_hop)
 833 {
 834         struct ieee80211_sub_if_data *sdata;
 835         struct mesh_path *mpath;
 836         struct sta_info *sta;
 837         int err;
 838
 839         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 840
 841         rcu_read_lock();
 842         sta = sta_info_get(sdata, next_hop);
 843         if (!sta) {
 844                 rcu_read_unlock();
 845                 return -ENOENT;
 846         }
 847
 848         err = mesh_path_add(dst, sdata);
 849         if (err) {
 850                 rcu_read_unlock();
 851                 return err;
 852         }
 853
 854         mpath = mesh_path_lookup(dst, sdata);
 855         if (!mpath) {
 856                 rcu_read_unlock();
 857                 return -ENXIO;
 858         }
 859         mesh_path_fix_nexthop(mpath, sta);
 860
 861         rcu_read_unlock();
 862         return 0;
 863 }
 864
 865 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 866                                  u8 *dst)
 867 {
 868         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 869
 870         if (dst)
 871                 return mesh_path_del(dst, sdata);
 872
 873         mesh_path_flush(sdata);
 874         return 0;
 875 }
 876
 877 static int ieee80211_change_mpath(struct wiphy *wiphy,
 878                                     struct net_device *dev,
 879                                     u8 *dst, u8 *next_hop)
 880 {
 881         struct ieee80211_sub_if_data *sdata;
 882         struct mesh_path *mpath;
 883         struct sta_info *sta;
 884
 885         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 886
 887         rcu_read_lock();
 888
 889         sta = sta_info_get(sdata, next_hop);
 890         if (!sta) {
 891                 rcu_read_unlock();
 892                 return -ENOENT;
 893         }
 894
 895         mpath = mesh_path_lookup(dst, sdata);
 896         if (!mpath) {
 897                 rcu_read_unlock();
 898                 return -ENOENT;
 899         }
 900
 901         mesh_path_fix_nexthop(mpath, sta);
 902
 903         rcu_read_unlock();
 904         return 0;
 905 }
 906
 907 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 908                             struct mpath_info *pinfo)
 909 {
 910         if (mpath->next_hop)
 911                 memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN);
 912         else
 913                 memset(next_hop, 0, ETH_ALEN);
 914
 915         pinfo->generation = mesh_paths_generation;
 916
 917         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 918                         MPATH_INFO_SN |
 919                         MPATH_INFO_METRIC |
 920                         MPATH_INFO_EXPTIME |
 921                         MPATH_INFO_DISCOVERY_TIMEOUT |
 922                         MPATH_INFO_DISCOVERY_RETRIES |
 923                         MPATH_INFO_FLAGS;
 924
 925         pinfo->frame_qlen = mpath->frame_queue.qlen;
 926         pinfo->sn = mpath->sn;
 927         pinfo->metric = mpath->metric;
 928         if (time_before(jiffies, mpath->exp_time))
 929                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 930         pinfo->discovery_timeout =
 931                         jiffies_to_msecs(mpath->discovery_timeout);
 932         pinfo->discovery_retries = mpath->discovery_retries;
 933         pinfo->flags = 0;
 934         if (mpath->flags & MESH_PATH_ACTIVE)
 935                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 936         if (mpath->flags & MESH_PATH_RESOLVING)
 937                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 938         if (mpath->flags & MESH_PATH_SN_VALID)
 939                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
 940         if (mpath->flags & MESH_PATH_FIXED)
 941                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 942         if (mpath->flags & MESH_PATH_RESOLVING)
 943                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 944
 945         pinfo->flags = mpath->flags;
 946 }
 947
 948 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 949                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 950
 951 {
 952         struct ieee80211_sub_if_data *sdata;
 953         struct mesh_path *mpath;
 954
 955         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 956
 957         rcu_read_lock();
 958         mpath = mesh_path_lookup(dst, sdata);
 959         if (!mpath) {
 960                 rcu_read_unlock();
 961                 return -ENOENT;
 962         }
 963         memcpy(dst, mpath->dst, ETH_ALEN);
 964         mpath_set_pinfo(mpath, next_hop, pinfo);
 965         rcu_read_unlock();
 966         return 0;
 967 }
 968
 969 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
 970                                  int idx, u8 *dst, u8 *next_hop,
 971                                  struct mpath_info *pinfo)
 972 {
 973         struct ieee80211_sub_if_data *sdata;
 974         struct mesh_path *mpath;
 975
 976         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 977
 978         rcu_read_lock();
 979         mpath = mesh_path_lookup_by_idx(idx, sdata);
 980         if (!mpath) {
 981                 rcu_read_unlock();
 982                 return -ENOENT;
 983         }
 984         memcpy(dst, mpath->dst, ETH_ALEN);
 985         mpath_set_pinfo(mpath, next_hop, pinfo);
 986         rcu_read_unlock();
 987         return 0;
 988 }
 989
 990 static int ieee80211_get_mesh_params(struct wiphy *wiphy,
 991                                 struct net_device *dev,
 992                                 struct mesh_config *conf)
 993 {
 994         struct ieee80211_sub_if_data *sdata;
 995         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 996
 997         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
 998         return 0;
 999 }
1000
1001 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1002 {
1003         return (mask >> (parm-1)) & 0x1;
1004 }
1005
1006 static int ieee80211_set_mesh_params(struct wiphy *wiphy,
1007                                 struct net_device *dev,
1008                                 const struct mesh_config *nconf, u32 mask)
1009 {
1010         struct mesh_config *conf;
1011         struct ieee80211_sub_if_data *sdata;
1012         struct ieee80211_if_mesh *ifmsh;
1013
1014         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1015         ifmsh = &sdata->u.mesh;
1016
1017         /* Set the config options which we are interested in setting */
1018         conf = &(sdata->u.mesh.mshcfg);
1019         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1020                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1021         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1022                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1023         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1024                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1025         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1026                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1027         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1028                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1029         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1030                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1031         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1032                 conf->dot11MeshTTL = nconf->element_ttl;
1033         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1034                 conf->auto_open_plinks = nconf->auto_open_plinks;
1035         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1036                 conf->dot11MeshHWMPmaxPREQretries =
1037                         nconf->dot11MeshHWMPmaxPREQretries;
1038         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1039                 conf->path_refresh_time = nconf->path_refresh_time;
1040         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1041                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1042         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1043                 conf->dot11MeshHWMPactivePathTimeout =
1044                         nconf->dot11MeshHWMPactivePathTimeout;
1045         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1046                 conf->dot11MeshHWMPpreqMinInterval =
1047                         nconf->dot11MeshHWMPpreqMinInterval;
1048         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1049                            mask))
1050                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1051                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1052         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1053                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1054                 ieee80211_mesh_root_setup(ifmsh);
1055         }
1056         return 0;
1057 }
1058
1059 #endif
1060
1061 static int ieee80211_change_bss(struct wiphy *wiphy,
1062                                 struct net_device *dev,
1063                                 struct bss_parameters *params)
1064 {
1065         struct ieee80211_sub_if_data *sdata;
1066         u32 changed = 0;
1067
1068         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1069
1070         if (params->use_cts_prot >= 0) {
1071                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1072                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1073         }
1074         if (params->use_short_preamble >= 0) {
1075                 sdata->vif.bss_conf.use_short_preamble =
1076                         params->use_short_preamble;
1077                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1078         }
1079
1080         if (!sdata->vif.bss_conf.use_short_slot &&
1081             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1082                 sdata->vif.bss_conf.use_short_slot = true;
1083                 changed |= BSS_CHANGED_ERP_SLOT;
1084         }
1085
1086         if (params->use_short_slot_time >= 0) {
1087                 sdata->vif.bss_conf.use_short_slot =
1088                         params->use_short_slot_time;
1089                 changed |= BSS_CHANGED_ERP_SLOT;
1090         }
1091
1092         if (params->basic_rates) {
1093                 int i, j;
1094                 u32 rates = 0;
1095                 struct ieee80211_local *local = wiphy_priv(wiphy);
1096                 struct ieee80211_supported_band *sband =
1097                         wiphy->bands[local->oper_channel->band];
1098
1099                 for (i = 0; i < params->basic_rates_len; i++) {
1100                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1101                         for (j = 0; j < sband->n_bitrates; j++) {
1102                                 if (sband->bitrates[j].bitrate == rate)
1103                                         rates |= BIT(j);
1104                         }
1105                 }
1106                 sdata->vif.bss_conf.basic_rates = rates;
1107                 changed |= BSS_CHANGED_BASIC_RATES;
1108         }
1109
1110         if (params->ap_isolate >= 0) {
1111                 if (params->ap_isolate)
1112                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1113                 else
1114                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1115         }
1116
1117         ieee80211_bss_info_change_notify(sdata, changed);
1118
1119         return 0;
1120 }
1121
1122 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1123                                     struct ieee80211_txq_params *params)
1124 {
1125         struct ieee80211_local *local = wiphy_priv(wiphy);
1126         struct ieee80211_tx_queue_params p;
1127
1128         if (!local->ops->conf_tx)
1129                 return -EOPNOTSUPP;
1130
1131         memset(&p, 0, sizeof(p));
1132         p.aifs = params->aifs;
1133         p.cw_max = params->cwmax;
1134         p.cw_min = params->cwmin;
1135         p.txop = params->txop;
1136
1137         /*
1138          * Setting tx queue params disables u-apsd because it's only
1139          * called in master mode.
1140          */
1141         p.uapsd = false;
1142
1143         if (drv_conf_tx(local, params->queue, &p)) {
1144                 wiphy_debug(local->hw.wiphy,
1145                             "failed to set TX queue parameters for queue %d\n",
1146                             params->queue);
1147                 return -EINVAL;
1148         }
1149
1150         return 0;
1151 }
1152
1153 static int ieee80211_set_channel(struct wiphy *wiphy,
1154                                  struct net_device *netdev,
1155                                  struct ieee80211_channel *chan,
1156                                  enum nl80211_channel_type channel_type)
1157 {
1158         struct ieee80211_local *local = wiphy_priv(wiphy);
1159         struct ieee80211_sub_if_data *sdata = NULL;
1160
1161         if (netdev)
1162                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1163
1164         switch (ieee80211_get_channel_mode(local, NULL)) {
1165         case CHAN_MODE_HOPPING:
1166                 return -EBUSY;
1167         case CHAN_MODE_FIXED:
1168                 if (local->oper_channel != chan)
1169                         return -EBUSY;
1170                 if (!sdata && local->_oper_channel_type == channel_type)
1171                         return 0;
1172                 break;
1173         case CHAN_MODE_UNDEFINED:
1174                 break;
1175         }
1176
1177         local->oper_channel = chan;
1178
1179         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1180                 return -EBUSY;
1181
1182         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1183         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR)
1184                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1185
1186         return 0;
1187 }
1188
1189 #ifdef CONFIG_PM
1190 static int ieee80211_suspend(struct wiphy *wiphy)
1191 {
1192         return __ieee80211_suspend(wiphy_priv(wiphy));
1193 }
1194
1195 static int ieee80211_resume(struct wiphy *wiphy)
1196 {
1197         return __ieee80211_resume(wiphy_priv(wiphy));
1198 }
1199 #else
1200 #define ieee80211_suspend NULL
1201 #define ieee80211_resume NULL
1202 #endif
1203
1204 static int ieee80211_scan(struct wiphy *wiphy,
1205                           struct net_device *dev,
1206                           struct cfg80211_scan_request *req)
1207 {
1208         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1209
1210         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1211         case NL80211_IFTYPE_STATION:
1212         case NL80211_IFTYPE_ADHOC:
1213         case NL80211_IFTYPE_MESH_POINT:
1214         case NL80211_IFTYPE_P2P_CLIENT:
1215                 break;
1216         case NL80211_IFTYPE_P2P_GO:
1217                 if (sdata->local->ops->hw_scan)
1218                         break;
1219                 /* FIXME: implement NoA while scanning in software */
1220                 return -EOPNOTSUPP;
1221         case NL80211_IFTYPE_AP:
1222                 if (sdata->u.ap.beacon)
1223                         return -EOPNOTSUPP;
1224                 break;
1225         default:
1226                 return -EOPNOTSUPP;
1227         }
1228
1229         return ieee80211_request_scan(sdata, req);
1230 }
1231
1232 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1233                           struct cfg80211_auth_request *req)
1234 {
1235         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1236 }
1237
1238 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1239                            struct cfg80211_assoc_request *req)
1240 {
1241         struct ieee80211_local *local = wiphy_priv(wiphy);
1242         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1243
1244         switch (ieee80211_get_channel_mode(local, sdata)) {
1245         case CHAN_MODE_HOPPING:
1246                 return -EBUSY;
1247         case CHAN_MODE_FIXED:
1248                 if (local->oper_channel == req->bss->channel)
1249                         break;
1250                 return -EBUSY;
1251         case CHAN_MODE_UNDEFINED:
1252                 break;
1253         }
1254
1255         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1256 }
1257
1258 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1259                             struct cfg80211_deauth_request *req,
1260                             void *cookie)
1261 {
1262         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1263                                     req, cookie);
1264 }
1265
1266 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1267                               struct cfg80211_disassoc_request *req,
1268                               void *cookie)
1269 {
1270         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1271                                       req, cookie);
1272 }
1273
1274 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1275                                struct cfg80211_ibss_params *params)
1276 {
1277         struct ieee80211_local *local = wiphy_priv(wiphy);
1278         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1279
1280         switch (ieee80211_get_channel_mode(local, sdata)) {
1281         case CHAN_MODE_HOPPING:
1282                 return -EBUSY;
1283         case CHAN_MODE_FIXED:
1284                 if (!params->channel_fixed)
1285                         return -EBUSY;
1286                 if (local->oper_channel == params->channel)
1287                         break;
1288                 return -EBUSY;
1289         case CHAN_MODE_UNDEFINED:
1290                 break;
1291         }
1292
1293         return ieee80211_ibss_join(sdata, params);
1294 }
1295
1296 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1297 {
1298         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1299
1300         return ieee80211_ibss_leave(sdata);
1301 }
1302
1303 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1304 {
1305         struct ieee80211_local *local = wiphy_priv(wiphy);
1306         int err;
1307
1308         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1309                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1310
1311                 if (err)
1312                         return err;
1313         }
1314
1315         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1316                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1317
1318                 if (err)
1319                         return err;
1320         }
1321
1322         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1323                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1324
1325                 if (err)
1326                         return err;
1327         }
1328
1329         if (changed & WIPHY_PARAM_RETRY_SHORT)
1330                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1331         if (changed & WIPHY_PARAM_RETRY_LONG)
1332                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1333         if (changed &
1334             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1335                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1336
1337         return 0;
1338 }
1339
1340 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1341                                   enum nl80211_tx_power_setting type, int mbm)
1342 {
1343         struct ieee80211_local *local = wiphy_priv(wiphy);
1344         struct ieee80211_channel *chan = local->hw.conf.channel;
1345         u32 changes = 0;
1346
1347         switch (type) {
1348         case NL80211_TX_POWER_AUTOMATIC:
1349                 local->user_power_level = -1;
1350                 break;
1351         case NL80211_TX_POWER_LIMITED:
1352                 if (mbm < 0 || (mbm % 100))
1353                         return -EOPNOTSUPP;
1354                 local->user_power_level = MBM_TO_DBM(mbm);
1355                 break;
1356         case NL80211_TX_POWER_FIXED:
1357                 if (mbm < 0 || (mbm % 100))
1358                         return -EOPNOTSUPP;
1359                 /* TODO: move to cfg80211 when it knows the channel */
1360                 if (MBM_TO_DBM(mbm) > chan->max_power)
1361                         return -EINVAL;
1362                 local->user_power_level = MBM_TO_DBM(mbm);
1363                 break;
1364         }
1365
1366         ieee80211_hw_config(local, changes);
1367
1368         return 0;
1369 }
1370
1371 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1372 {
1373         struct ieee80211_local *local = wiphy_priv(wiphy);
1374
1375         *dbm = local->hw.conf.power_level;
1376
1377         return 0;
1378 }
1379
1380 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1381                                   const u8 *addr)
1382 {
1383         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1384
1385         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1386
1387         return 0;
1388 }
1389
1390 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1391 {
1392         struct ieee80211_local *local = wiphy_priv(wiphy);
1393
1394         drv_rfkill_poll(local);
1395 }
1396
1397 #ifdef CONFIG_NL80211_TESTMODE
1398 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1399 {
1400         struct ieee80211_local *local = wiphy_priv(wiphy);
1401
1402         if (!local->ops->testmode_cmd)
1403                 return -EOPNOTSUPP;
1404
1405         return local->ops->testmode_cmd(&local->hw, data, len);
1406 }
1407 #endif
1408
1409 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1410                              enum ieee80211_smps_mode smps_mode)
1411 {
1412         const u8 *ap;
1413         enum ieee80211_smps_mode old_req;
1414         int err;
1415
1416         old_req = sdata->u.mgd.req_smps;
1417         sdata->u.mgd.req_smps = smps_mode;
1418
1419         if (old_req == smps_mode &&
1420             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1421                 return 0;
1422
1423         /*
1424          * If not associated, or current association is not an HT
1425          * association, there's no need to send an action frame.
1426          */
1427         if (!sdata->u.mgd.associated ||
1428             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1429                 mutex_lock(&sdata->local->iflist_mtx);
1430                 ieee80211_recalc_smps(sdata->local);
1431                 mutex_unlock(&sdata->local->iflist_mtx);
1432                 return 0;
1433         }
1434
1435         ap = sdata->u.mgd.associated->bssid;
1436
1437         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1438                 if (sdata->u.mgd.powersave)
1439                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1440                 else
1441                         smps_mode = IEEE80211_SMPS_OFF;
1442         }
1443
1444         /* send SM PS frame to AP */
1445         err = ieee80211_send_smps_action(sdata, smps_mode,
1446                                          ap, ap);
1447         if (err)
1448                 sdata->u.mgd.req_smps = old_req;
1449
1450         return err;
1451 }
1452
1453 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1454                                     bool enabled, int timeout)
1455 {
1456         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1457         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1458
1459         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1460                 return -EOPNOTSUPP;
1461
1462         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1463                 return -EOPNOTSUPP;
1464
1465         if (enabled == sdata->u.mgd.powersave &&
1466             timeout == local->dynamic_ps_forced_timeout)
1467                 return 0;
1468
1469         sdata->u.mgd.powersave = enabled;
1470         local->dynamic_ps_forced_timeout = timeout;
1471
1472         /* no change, but if automatic follow powersave */
1473         mutex_lock(&sdata->u.mgd.mtx);
1474         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1475         mutex_unlock(&sdata->u.mgd.mtx);
1476
1477         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1478                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1479
1480         ieee80211_recalc_ps(local, -1);
1481
1482         return 0;
1483 }
1484
1485 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1486                                          struct net_device *dev,
1487                                          s32 rssi_thold, u32 rssi_hyst)
1488 {
1489         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1490         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1491         struct ieee80211_vif *vif = &sdata->vif;
1492         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1493
1494         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1495             rssi_hyst == bss_conf->cqm_rssi_hyst)
1496                 return 0;
1497
1498         bss_conf->cqm_rssi_thold = rssi_thold;
1499         bss_conf->cqm_rssi_hyst = rssi_hyst;
1500
1501         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1502                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1503                         return -EOPNOTSUPP;
1504                 return 0;
1505         }
1506
1507         /* tell the driver upon association, unless already associated */
1508         if (sdata->u.mgd.associated)
1509                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1510
1511         return 0;
1512 }
1513
1514 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1515                                       struct net_device *dev,
1516                                       const u8 *addr,
1517                                       const struct cfg80211_bitrate_mask *mask)
1518 {
1519         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1520         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1521         int i;
1522
1523         /*
1524          * This _could_ be supported by providing a hook for
1525          * drivers for this function, but at this point it
1526          * doesn't seem worth bothering.
1527          */
1528         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
1529                 return -EOPNOTSUPP;
1530
1531
1532         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1533                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1534
1535         return 0;
1536 }
1537
1538 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1539                                        struct net_device *dev,
1540                                        struct ieee80211_channel *chan,
1541                                        enum nl80211_channel_type channel_type,
1542                                        unsigned int duration,
1543                                        u64 *cookie)
1544 {
1545         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1546
1547         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1548                                               duration, cookie);
1549 }
1550
1551 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1552                                               struct net_device *dev,
1553                                               u64 cookie)
1554 {
1555         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1556
1557         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1558 }
1559
1560 static enum work_done_result
1561 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1562 {
1563         /*
1564          * Use the data embedded in the work struct for reporting
1565          * here so if the driver mangled the SKB before dropping
1566          * it (which is the only way we really should get here)
1567          * then we don't report mangled data.
1568          *
1569          * If there was no wait time, then by the time we get here
1570          * the driver will likely not have reported the status yet,
1571          * so in that case userspace will have to deal with it.
1572          */
1573
1574         if (wk->offchan_tx.wait && wk->offchan_tx.frame)
1575                 cfg80211_mgmt_tx_status(wk->sdata->dev,
1576                                         (unsigned long) wk->offchan_tx.frame,
1577                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
1578
1579         return WORK_DONE_DESTROY;
1580 }
1581
1582 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1583                              struct ieee80211_channel *chan, bool offchan,
1584                              enum nl80211_channel_type channel_type,
1585                              bool channel_type_valid, unsigned int wait,
1586                              const u8 *buf, size_t len, u64 *cookie)
1587 {
1588         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1589         struct ieee80211_local *local = sdata->local;
1590         struct sk_buff *skb;
1591         struct sta_info *sta;
1592         struct ieee80211_work *wk;
1593         const struct ieee80211_mgmt *mgmt = (void *)buf;
1594         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1595                     IEEE80211_TX_CTL_REQ_TX_STATUS;
1596         bool is_offchan = false;
1597
1598         /* Check that we are on the requested channel for transmission */
1599         if (chan != local->tmp_channel &&
1600             chan != local->oper_channel)
1601                 is_offchan = true;
1602         if (channel_type_valid &&
1603             (channel_type != local->tmp_channel_type &&
1604              channel_type != local->_oper_channel_type))
1605                 is_offchan = true;
1606
1607         if (is_offchan && !offchan)
1608                 return -EBUSY;
1609
1610         switch (sdata->vif.type) {
1611         case NL80211_IFTYPE_ADHOC:
1612         case NL80211_IFTYPE_AP:
1613         case NL80211_IFTYPE_AP_VLAN:
1614         case NL80211_IFTYPE_P2P_GO:
1615                 if (!ieee80211_is_action(mgmt->frame_control) ||
1616                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1617                         break;
1618                 rcu_read_lock();
1619                 sta = sta_info_get(sdata, mgmt->da);
1620                 rcu_read_unlock();
1621                 if (!sta)
1622                         return -ENOLINK;
1623                 break;
1624         case NL80211_IFTYPE_STATION:
1625         case NL80211_IFTYPE_P2P_CLIENT:
1626                 break;
1627         default:
1628                 return -EOPNOTSUPP;
1629         }
1630
1631         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1632         if (!skb)
1633                 return -ENOMEM;
1634         skb_reserve(skb, local->hw.extra_tx_headroom);
1635
1636         memcpy(skb_put(skb, len), buf, len);
1637
1638         IEEE80211_SKB_CB(skb)->flags = flags;
1639
1640         skb->dev = sdata->dev;
1641
1642         *cookie = (unsigned long) skb;
1643
1644         /*
1645          * Can transmit right away if the channel was the
1646          * right one and there's no wait involved... If a
1647          * wait is involved, we might otherwise not be on
1648          * the right channel for long enough!
1649          */
1650         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
1651                 ieee80211_tx_skb(sdata, skb);
1652                 return 0;
1653         }
1654
1655         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
1656         if (!wk) {
1657                 kfree_skb(skb);
1658                 return -ENOMEM;
1659         }
1660
1661         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
1662         wk->chan = chan;
1663         wk->sdata = sdata;
1664         wk->done = ieee80211_offchan_tx_done;
1665         wk->offchan_tx.frame = skb;
1666         wk->offchan_tx.wait = wait;
1667         wk->ie_len = len;
1668         memcpy(wk->ie, buf, len);
1669
1670         ieee80211_add_work(wk);
1671         return 0;
1672 }
1673
1674 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1675                                          struct net_device *dev,
1676                                          u64 cookie)
1677 {
1678         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1679         struct ieee80211_local *local = sdata->local;
1680         struct ieee80211_work *wk;
1681         int ret = -ENOENT;
1682
1683         mutex_lock(&local->mtx);
1684         list_for_each_entry(wk, &local->work_list, list) {
1685                 if (wk->sdata != sdata)
1686                         continue;
1687
1688                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
1689                         continue;
1690
1691                 if (cookie != (unsigned long) wk->offchan_tx.frame)
1692                         continue;
1693
1694                 wk->timeout = jiffies;
1695
1696                 ieee80211_queue_work(&local->hw, &local->work_work);
1697                 ret = 0;
1698                 break;
1699         }
1700         mutex_unlock(&local->mtx);
1701
1702         return ret;
1703 }
1704
1705 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
1706                                           struct net_device *dev,
1707                                           u16 frame_type, bool reg)
1708 {
1709         struct ieee80211_local *local = wiphy_priv(wiphy);
1710
1711         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
1712                 return;
1713
1714         if (reg)
1715                 local->probe_req_reg++;
1716         else
1717                 local->probe_req_reg--;
1718
1719         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
1720 }
1721
1722 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
1723 {
1724         struct ieee80211_local *local = wiphy_priv(wiphy);
1725
1726         if (local->started)
1727                 return -EOPNOTSUPP;
1728
1729         return drv_set_antenna(local, tx_ant, rx_ant);
1730 }
1731
1732 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
1733 {
1734         struct ieee80211_local *local = wiphy_priv(wiphy);
1735
1736         return drv_get_antenna(local, tx_ant, rx_ant);
1737 }
1738
1739 struct cfg80211_ops mac80211_config_ops = {
1740         .add_virtual_intf = ieee80211_add_iface,
1741         .del_virtual_intf = ieee80211_del_iface,
1742         .change_virtual_intf = ieee80211_change_iface,
1743         .add_key = ieee80211_add_key,
1744         .del_key = ieee80211_del_key,
1745         .get_key = ieee80211_get_key,
1746         .set_default_key = ieee80211_config_default_key,
1747         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
1748         .add_beacon = ieee80211_add_beacon,
1749         .set_beacon = ieee80211_set_beacon,
1750         .del_beacon = ieee80211_del_beacon,
1751         .add_station = ieee80211_add_station,
1752         .del_station = ieee80211_del_station,
1753         .change_station = ieee80211_change_station,
1754         .get_station = ieee80211_get_station,
1755         .dump_station = ieee80211_dump_station,
1756         .dump_survey = ieee80211_dump_survey,
1757 #ifdef CONFIG_MAC80211_MESH
1758         .add_mpath = ieee80211_add_mpath,
1759         .del_mpath = ieee80211_del_mpath,
1760         .change_mpath = ieee80211_change_mpath,
1761         .get_mpath = ieee80211_get_mpath,
1762         .dump_mpath = ieee80211_dump_mpath,
1763         .set_mesh_params = ieee80211_set_mesh_params,
1764         .get_mesh_params = ieee80211_get_mesh_params,
1765 #endif
1766         .change_bss = ieee80211_change_bss,
1767         .set_txq_params = ieee80211_set_txq_params,
1768         .set_channel = ieee80211_set_channel,
1769         .suspend = ieee80211_suspend,
1770         .resume = ieee80211_resume,
1771         .scan = ieee80211_scan,
1772         .auth = ieee80211_auth,
1773         .assoc = ieee80211_assoc,
1774         .deauth = ieee80211_deauth,
1775         .disassoc = ieee80211_disassoc,
1776         .join_ibss = ieee80211_join_ibss,
1777         .leave_ibss = ieee80211_leave_ibss,
1778         .set_wiphy_params = ieee80211_set_wiphy_params,
1779         .set_tx_power = ieee80211_set_tx_power,
1780         .get_tx_power = ieee80211_get_tx_power,
1781         .set_wds_peer = ieee80211_set_wds_peer,
1782         .rfkill_poll = ieee80211_rfkill_poll,
1783         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
1784         .set_power_mgmt = ieee80211_set_power_mgmt,
1785         .set_bitrate_mask = ieee80211_set_bitrate_mask,
1786         .remain_on_channel = ieee80211_remain_on_channel,
1787         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
1788         .mgmt_tx = ieee80211_mgmt_tx,
1789         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
1790         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
1791         .mgmt_frame_register = ieee80211_mgmt_frame_register,
1792         .set_antenna = ieee80211_set_antenna,
1793         .get_antenna = ieee80211_get_antenna,
1794 };