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 bool nl80211_type_check(enum nl80211_iftype type)
  23 {
  24         switch (type) {
  25         case NL80211_IFTYPE_ADHOC:
  26         case NL80211_IFTYPE_STATION:
  27         case NL80211_IFTYPE_MONITOR:
  28 #ifdef CONFIG_MAC80211_MESH
  29         case NL80211_IFTYPE_MESH_POINT:
  30 #endif
  31         case NL80211_IFTYPE_AP:
  32         case NL80211_IFTYPE_AP_VLAN:
  33         case NL80211_IFTYPE_WDS:
  34                 return true;
  35         default:
  36                 return false;
  37         }
  38 }
  39
  40 static bool nl80211_params_check(enum nl80211_iftype type,
  41                                  struct vif_params *params)
  42 {
  43         if (!nl80211_type_check(type))
  44                 return false;
  45
  46         return true;
  47 }
  48
  49 static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
  50                                enum nl80211_iftype type, u32 *flags,
  51                                struct vif_params *params)
  52 {
  53         struct ieee80211_local *local = wiphy_priv(wiphy);
  54         struct net_device *dev;
  55         struct ieee80211_sub_if_data *sdata;
  56         int err;
  57
  58         if (!nl80211_params_check(type, params))
  59                 return -EINVAL;
  60
  61         err = ieee80211_if_add(local, name, &dev, type, params);
  62         if (err || type != NL80211_IFTYPE_MONITOR || !flags)
  63                 return err;
  64
  65         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  66         sdata->u.mntr_flags = *flags;
  67         return 0;
  68 }
  69
  70 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  71 {
  72         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  73
  74         return 0;
  75 }
  76
  77 static int ieee80211_change_iface(struct wiphy *wiphy,
  78                                   struct net_device *dev,
  79                                   enum nl80211_iftype type, u32 *flags,
  80                                   struct vif_params *params)
  81 {
  82         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  83         int ret;
  84
  85         if (ieee80211_sdata_running(sdata))
  86                 return -EBUSY;
  87
  88         if (!nl80211_params_check(type, params))
  89                 return -EINVAL;
  90
  91         ret = ieee80211_if_change_type(sdata, type);
  92         if (ret)
  93                 return ret;
  94
  95         if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
  96                 ieee80211_sdata_set_mesh_id(sdata,
  97                                             params->mesh_id_len,
  98                                             params->mesh_id);
  99
 100         if (type == NL80211_IFTYPE_AP_VLAN &&
 101             params && params->use_4addr == 0)
 102                 rcu_assign_pointer(sdata->u.vlan.sta, NULL);
 103         else if (type == NL80211_IFTYPE_STATION &&
 104                  params && params->use_4addr >= 0)
 105                 sdata->u.mgd.use_4addr = params->use_4addr;
 106
 107         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags)
 108                 sdata->u.mntr_flags = *flags;
 109
 110         return 0;
 111 }
 112
 113 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 114                              u8 key_idx, const u8 *mac_addr,
 115                              struct key_params *params)
 116 {
 117         struct ieee80211_sub_if_data *sdata;
 118         struct sta_info *sta = NULL;
 119         enum ieee80211_key_alg alg;
 120         struct ieee80211_key *key;
 121         int err;
 122
 123         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 124
 125         switch (params->cipher) {
 126         case WLAN_CIPHER_SUITE_WEP40:
 127         case WLAN_CIPHER_SUITE_WEP104:
 128                 alg = ALG_WEP;
 129                 break;
 130         case WLAN_CIPHER_SUITE_TKIP:
 131                 alg = ALG_TKIP;
 132                 break;
 133         case WLAN_CIPHER_SUITE_CCMP:
 134                 alg = ALG_CCMP;
 135                 break;
 136         case WLAN_CIPHER_SUITE_AES_CMAC:
 137                 alg = ALG_AES_CMAC;
 138                 break;
 139         default:
 140                 return -EINVAL;
 141         }
 142
 143         key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key,
 144                                   params->seq_len, params->seq);
 145         if (!key)
 146                 return -ENOMEM;
 147
 148         rcu_read_lock();
 149
 150         if (mac_addr) {
 151                 sta = sta_info_get_bss(sdata, mac_addr);
 152                 if (!sta) {
 153                         ieee80211_key_free(key);
 154                         err = -ENOENT;
 155                         goto out_unlock;
 156                 }
 157         }
 158
 159         ieee80211_key_link(key, sdata, sta);
 160
 161         err = 0;
 162  out_unlock:
 163         rcu_read_unlock();
 164
 165         return err;
 166 }
 167
 168 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 169                              u8 key_idx, const u8 *mac_addr)
 170 {
 171         struct ieee80211_sub_if_data *sdata;
 172         struct sta_info *sta;
 173         int ret;
 174
 175         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 176
 177         rcu_read_lock();
 178
 179         if (mac_addr) {
 180                 ret = -ENOENT;
 181
 182                 sta = sta_info_get_bss(sdata, mac_addr);
 183                 if (!sta)
 184                         goto out_unlock;
 185
 186                 if (sta->key) {
 187                         ieee80211_key_free(sta->key);
 188                         WARN_ON(sta->key);
 189                         ret = 0;
 190                 }
 191
 192                 goto out_unlock;
 193         }
 194
 195         if (!sdata->keys[key_idx]) {
 196                 ret = -ENOENT;
 197                 goto out_unlock;
 198         }
 199
 200         ieee80211_key_free(sdata->keys[key_idx]);
 201         WARN_ON(sdata->keys[key_idx]);
 202
 203         ret = 0;
 204  out_unlock:
 205         rcu_read_unlock();
 206
 207         return ret;
 208 }
 209
 210 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 211                              u8 key_idx, const u8 *mac_addr, void *cookie,
 212                              void (*callback)(void *cookie,
 213                                               struct key_params *params))
 214 {
 215         struct ieee80211_sub_if_data *sdata;
 216         struct sta_info *sta = NULL;
 217         u8 seq[6] = {0};
 218         struct key_params params;
 219         struct ieee80211_key *key;
 220         u32 iv32;
 221         u16 iv16;
 222         int err = -ENOENT;
 223
 224         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 225
 226         rcu_read_lock();
 227
 228         if (mac_addr) {
 229                 sta = sta_info_get_bss(sdata, mac_addr);
 230                 if (!sta)
 231                         goto out;
 232
 233                 key = sta->key;
 234         } else
 235                 key = sdata->keys[key_idx];
 236
 237         if (!key)
 238                 goto out;
 239
 240         memset(&params, 0, sizeof(params));
 241
 242         switch (key->conf.alg) {
 243         case ALG_TKIP:
 244                 params.cipher = WLAN_CIPHER_SUITE_TKIP;
 245
 246                 iv32 = key->u.tkip.tx.iv32;
 247                 iv16 = key->u.tkip.tx.iv16;
 248
 249                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 250                         drv_get_tkip_seq(sdata->local,
 251                                          key->conf.hw_key_idx,
 252                                          &iv32, &iv16);
 253
 254                 seq[0] = iv16 & 0xff;
 255                 seq[1] = (iv16 >> 8) & 0xff;
 256                 seq[2] = iv32 & 0xff;
 257                 seq[3] = (iv32 >> 8) & 0xff;
 258                 seq[4] = (iv32 >> 16) & 0xff;
 259                 seq[5] = (iv32 >> 24) & 0xff;
 260                 params.seq = seq;
 261                 params.seq_len = 6;
 262                 break;
 263         case ALG_CCMP:
 264                 params.cipher = WLAN_CIPHER_SUITE_CCMP;
 265                 seq[0] = key->u.ccmp.tx_pn[5];
 266                 seq[1] = key->u.ccmp.tx_pn[4];
 267                 seq[2] = key->u.ccmp.tx_pn[3];
 268                 seq[3] = key->u.ccmp.tx_pn[2];
 269                 seq[4] = key->u.ccmp.tx_pn[1];
 270                 seq[5] = key->u.ccmp.tx_pn[0];
 271                 params.seq = seq;
 272                 params.seq_len = 6;
 273                 break;
 274         case ALG_WEP:
 275                 if (key->conf.keylen == 5)
 276                         params.cipher = WLAN_CIPHER_SUITE_WEP40;
 277                 else
 278                         params.cipher = WLAN_CIPHER_SUITE_WEP104;
 279                 break;
 280         case ALG_AES_CMAC:
 281                 params.cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 282                 seq[0] = key->u.aes_cmac.tx_pn[5];
 283                 seq[1] = key->u.aes_cmac.tx_pn[4];
 284                 seq[2] = key->u.aes_cmac.tx_pn[3];
 285                 seq[3] = key->u.aes_cmac.tx_pn[2];
 286                 seq[4] = key->u.aes_cmac.tx_pn[1];
 287                 seq[5] = key->u.aes_cmac.tx_pn[0];
 288                 params.seq = seq;
 289                 params.seq_len = 6;
 290                 break;
 291         }
 292
 293         params.key = key->conf.key;
 294         params.key_len = key->conf.keylen;
 295
 296         callback(cookie, &params);
 297         err = 0;
 298
 299  out:
 300         rcu_read_unlock();
 301         return err;
 302 }
 303
 304 static int ieee80211_config_default_key(struct wiphy *wiphy,
 305                                         struct net_device *dev,
 306                                         u8 key_idx)
 307 {
 308         struct ieee80211_sub_if_data *sdata;
 309
 310         rcu_read_lock();
 311
 312         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 313         ieee80211_set_default_key(sdata, key_idx);
 314
 315         rcu_read_unlock();
 316
 317         return 0;
 318 }
 319
 320 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 321                                              struct net_device *dev,
 322                                              u8 key_idx)
 323 {
 324         struct ieee80211_sub_if_data *sdata;
 325
 326         rcu_read_lock();
 327
 328         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 329         ieee80211_set_default_mgmt_key(sdata, key_idx);
 330
 331         rcu_read_unlock();
 332
 333         return 0;
 334 }
 335
 336 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 337 {
 338         struct ieee80211_sub_if_data *sdata = sta->sdata;
 339
 340         sinfo->generation = sdata->local->sta_generation;
 341
 342         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 343                         STATION_INFO_RX_BYTES |
 344                         STATION_INFO_TX_BYTES |
 345                         STATION_INFO_RX_PACKETS |
 346                         STATION_INFO_TX_PACKETS |
 347                         STATION_INFO_TX_BITRATE;
 348
 349         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 350         sinfo->rx_bytes = sta->rx_bytes;
 351         sinfo->tx_bytes = sta->tx_bytes;
 352         sinfo->rx_packets = sta->rx_packets;
 353         sinfo->tx_packets = sta->tx_packets;
 354
 355         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 356             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 357                 sinfo->filled |= STATION_INFO_SIGNAL;
 358                 sinfo->signal = (s8)sta->last_signal;
 359         }
 360
 361         sinfo->txrate.flags = 0;
 362         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 363                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 364         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 365                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 366         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 367                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 368
 369         if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) {
 370                 struct ieee80211_supported_band *sband;
 371                 sband = sta->local->hw.wiphy->bands[
 372                                 sta->local->hw.conf.channel->band];
 373                 sinfo->txrate.legacy =
 374                         sband->bitrates[sta->last_tx_rate.idx].bitrate;
 375         } else
 376                 sinfo->txrate.mcs = sta->last_tx_rate.idx;
 377
 378         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 379 #ifdef CONFIG_MAC80211_MESH
 380                 sinfo->filled |= STATION_INFO_LLID |
 381                                  STATION_INFO_PLID |
 382                                  STATION_INFO_PLINK_STATE;
 383
 384                 sinfo->llid = le16_to_cpu(sta->llid);
 385                 sinfo->plid = le16_to_cpu(sta->plid);
 386                 sinfo->plink_state = sta->plink_state;
 387 #endif
 388         }
 389 }
 390
 391
 392 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 393                                  int idx, u8 *mac, struct station_info *sinfo)
 394 {
 395         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 396         struct sta_info *sta;
 397         int ret = -ENOENT;
 398
 399         rcu_read_lock();
 400
 401         sta = sta_info_get_by_idx(sdata, idx);
 402         if (sta) {
 403                 ret = 0;
 404                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 405                 sta_set_sinfo(sta, sinfo);
 406         }
 407
 408         rcu_read_unlock();
 409
 410         return ret;
 411 }
 412
 413 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 414                                  int idx, struct survey_info *survey)
 415 {
 416         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 417
 418         if (!local->ops->get_survey)
 419                 return -EOPNOTSUPP;
 420
 421         return drv_get_survey(local, idx, survey);
 422 }
 423
 424 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 425                                  u8 *mac, struct station_info *sinfo)
 426 {
 427         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 428         struct sta_info *sta;
 429         int ret = -ENOENT;
 430
 431         rcu_read_lock();
 432
 433         sta = sta_info_get_bss(sdata, mac);
 434         if (sta) {
 435                 ret = 0;
 436                 sta_set_sinfo(sta, sinfo);
 437         }
 438
 439         rcu_read_unlock();
 440
 441         return ret;
 442 }
 443
 444 /*
 445  * This handles both adding a beacon and setting new beacon info
 446  */
 447 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 448                                    struct beacon_parameters *params)
 449 {
 450         struct beacon_data *new, *old;
 451         int new_head_len, new_tail_len;
 452         int size;
 453         int err = -EINVAL;
 454
 455         old = sdata->u.ap.beacon;
 456
 457         /* head must not be zero-length */
 458         if (params->head && !params->head_len)
 459                 return -EINVAL;
 460
 461         /*
 462          * This is a kludge. beacon interval should really be part
 463          * of the beacon information.
 464          */
 465         if (params->interval &&
 466             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 467                 sdata->vif.bss_conf.beacon_int = params->interval;
 468                 ieee80211_bss_info_change_notify(sdata,
 469                                                  BSS_CHANGED_BEACON_INT);
 470         }
 471
 472         /* Need to have a beacon head if we don't have one yet */
 473         if (!params->head && !old)
 474                 return err;
 475
 476         /* sorry, no way to start beaconing without dtim period */
 477         if (!params->dtim_period && !old)
 478                 return err;
 479
 480         /* new or old head? */
 481         if (params->head)
 482                 new_head_len = params->head_len;
 483         else
 484                 new_head_len = old->head_len;
 485
 486         /* new or old tail? */
 487         if (params->tail || !old)
 488                 /* params->tail_len will be zero for !params->tail */
 489                 new_tail_len = params->tail_len;
 490         else
 491                 new_tail_len = old->tail_len;
 492
 493         size = sizeof(*new) + new_head_len + new_tail_len;
 494
 495         new = kzalloc(size, GFP_KERNEL);
 496         if (!new)
 497                 return -ENOMEM;
 498
 499         /* start filling the new info now */
 500
 501         /* new or old dtim period? */
 502         if (params->dtim_period)
 503                 new->dtim_period = params->dtim_period;
 504         else
 505                 new->dtim_period = old->dtim_period;
 506
 507         /*
 508          * pointers go into the block we allocated,
 509          * memory is | beacon_data | head | tail |
 510          */
 511         new->head = ((u8 *) new) + sizeof(*new);
 512         new->tail = new->head + new_head_len;
 513         new->head_len = new_head_len;
 514         new->tail_len = new_tail_len;
 515
 516         /* copy in head */
 517         if (params->head)
 518                 memcpy(new->head, params->head, new_head_len);
 519         else
 520                 memcpy(new->head, old->head, new_head_len);
 521
 522         /* copy in optional tail */
 523         if (params->tail)
 524                 memcpy(new->tail, params->tail, new_tail_len);
 525         else
 526                 if (old)
 527                         memcpy(new->tail, old->tail, new_tail_len);
 528
 529         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 530
 531         rcu_assign_pointer(sdata->u.ap.beacon, new);
 532
 533         synchronize_rcu();
 534
 535         kfree(old);
 536
 537         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 538                                                 BSS_CHANGED_BEACON);
 539         return 0;
 540 }
 541
 542 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 543                                 struct beacon_parameters *params)
 544 {
 545         struct ieee80211_sub_if_data *sdata;
 546         struct beacon_data *old;
 547
 548         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 549
 550         old = sdata->u.ap.beacon;
 551
 552         if (old)
 553                 return -EALREADY;
 554
 555         return ieee80211_config_beacon(sdata, params);
 556 }
 557
 558 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 559                                 struct beacon_parameters *params)
 560 {
 561         struct ieee80211_sub_if_data *sdata;
 562         struct beacon_data *old;
 563
 564         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 565
 566         old = sdata->u.ap.beacon;
 567
 568         if (!old)
 569                 return -ENOENT;
 570
 571         return ieee80211_config_beacon(sdata, params);
 572 }
 573
 574 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 575 {
 576         struct ieee80211_sub_if_data *sdata;
 577         struct beacon_data *old;
 578
 579         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 580
 581         old = sdata->u.ap.beacon;
 582
 583         if (!old)
 584                 return -ENOENT;
 585
 586         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 587         synchronize_rcu();
 588         kfree(old);
 589
 590         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 591         return 0;
 592 }
 593
 594 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 595 struct iapp_layer2_update {
 596         u8 da[ETH_ALEN];        /* broadcast */
 597         u8 sa[ETH_ALEN];        /* STA addr */
 598         __be16 len;             /* 6 */
 599         u8 dsap;                /* 0 */
 600         u8 ssap;                /* 0 */
 601         u8 control;
 602         u8 xid_info[3];
 603 } __attribute__ ((packed));
 604
 605 static void ieee80211_send_layer2_update(struct sta_info *sta)
 606 {
 607         struct iapp_layer2_update *msg;
 608         struct sk_buff *skb;
 609
 610         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 611          * bridge devices */
 612
 613         skb = dev_alloc_skb(sizeof(*msg));
 614         if (!skb)
 615                 return;
 616         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 617
 618         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 619          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 620
 621         memset(msg->da, 0xff, ETH_ALEN);
 622         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 623         msg->len = htons(6);
 624         msg->dsap = 0;
 625         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 626         msg->control = 0xaf;    /* XID response lsb.1111F101.
 627                                  * F=0 (no poll command; unsolicited frame) */
 628         msg->xid_info[0] = 0x81;        /* XID format identifier */
 629         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 630         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 631
 632         skb->dev = sta->sdata->dev;
 633         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 634         memset(skb->cb, 0, sizeof(skb->cb));
 635         netif_rx(skb);
 636 }
 637
 638 static void sta_apply_parameters(struct ieee80211_local *local,
 639                                  struct sta_info *sta,
 640                                  struct station_parameters *params)
 641 {
 642         u32 rates;
 643         int i, j;
 644         struct ieee80211_supported_band *sband;
 645         struct ieee80211_sub_if_data *sdata = sta->sdata;
 646         u32 mask, set;
 647
 648         sband = local->hw.wiphy->bands[local->oper_channel->band];
 649
 650         spin_lock_bh(&sta->lock);
 651         mask = params->sta_flags_mask;
 652         set = params->sta_flags_set;
 653
 654         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 655                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 656                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 657                         sta->flags |= WLAN_STA_AUTHORIZED;
 658         }
 659
 660         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 661                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 662                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 663                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 664         }
 665
 666         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 667                 sta->flags &= ~WLAN_STA_WME;
 668                 if (set & BIT(NL80211_STA_FLAG_WME))
 669                         sta->flags |= WLAN_STA_WME;
 670         }
 671
 672         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 673                 sta->flags &= ~WLAN_STA_MFP;
 674                 if (set & BIT(NL80211_STA_FLAG_MFP))
 675                         sta->flags |= WLAN_STA_MFP;
 676         }
 677         spin_unlock_bh(&sta->lock);
 678
 679         /*
 680          * cfg80211 validates this (1-2007) and allows setting the AID
 681          * only when creating a new station entry
 682          */
 683         if (params->aid)
 684                 sta->sta.aid = params->aid;
 685
 686         /*
 687          * FIXME: updating the following information is racy when this
 688          *        function is called from ieee80211_change_station().
 689          *        However, all this information should be static so
 690          *        maybe we should just reject attemps to change it.
 691          */
 692
 693         if (params->listen_interval >= 0)
 694                 sta->listen_interval = params->listen_interval;
 695
 696         if (params->supported_rates) {
 697                 rates = 0;
 698
 699                 for (i = 0; i < params->supported_rates_len; i++) {
 700                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 701                         for (j = 0; j < sband->n_bitrates; j++) {
 702                                 if (sband->bitrates[j].bitrate == rate)
 703                                         rates |= BIT(j);
 704                         }
 705                 }
 706                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 707         }
 708
 709         if (params->ht_capa)
 710                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 711                                                   params->ht_capa,
 712                                                   &sta->sta.ht_cap);
 713
 714         if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
 715                 switch (params->plink_action) {
 716                 case PLINK_ACTION_OPEN:
 717                         mesh_plink_open(sta);
 718                         break;
 719                 case PLINK_ACTION_BLOCK:
 720                         mesh_plink_block(sta);
 721                         break;
 722                 }
 723         }
 724 }
 725
 726 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 727                                  u8 *mac, struct station_parameters *params)
 728 {
 729         struct ieee80211_local *local = wiphy_priv(wiphy);
 730         struct sta_info *sta;
 731         struct ieee80211_sub_if_data *sdata;
 732         int err;
 733         int layer2_update;
 734
 735         if (params->vlan) {
 736                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 737
 738                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 739                     sdata->vif.type != NL80211_IFTYPE_AP)
 740                         return -EINVAL;
 741         } else
 742                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 743
 744         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 745                 return -EINVAL;
 746
 747         if (is_multicast_ether_addr(mac))
 748                 return -EINVAL;
 749
 750         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 751         if (!sta)
 752                 return -ENOMEM;
 753
 754         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 755
 756         sta_apply_parameters(local, sta, params);
 757
 758         rate_control_rate_init(sta);
 759
 760         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 761                 sdata->vif.type == NL80211_IFTYPE_AP;
 762
 763         err = sta_info_insert_rcu(sta);
 764         if (err) {
 765                 rcu_read_unlock();
 766                 return err;
 767         }
 768
 769         if (layer2_update)
 770                 ieee80211_send_layer2_update(sta);
 771
 772         rcu_read_unlock();
 773
 774         return 0;
 775 }
 776
 777 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 778                                  u8 *mac)
 779 {
 780         struct ieee80211_local *local = wiphy_priv(wiphy);
 781         struct ieee80211_sub_if_data *sdata;
 782
 783         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 784
 785         if (mac)
 786                 return sta_info_destroy_addr_bss(sdata, mac);
 787
 788         sta_info_flush(local, sdata);
 789         return 0;
 790 }
 791
 792 static int ieee80211_change_station(struct wiphy *wiphy,
 793                                     struct net_device *dev,
 794                                     u8 *mac,
 795                                     struct station_parameters *params)
 796 {
 797         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 798         struct ieee80211_local *local = wiphy_priv(wiphy);
 799         struct sta_info *sta;
 800         struct ieee80211_sub_if_data *vlansdata;
 801
 802         rcu_read_lock();
 803
 804         sta = sta_info_get_bss(sdata, mac);
 805         if (!sta) {
 806                 rcu_read_unlock();
 807                 return -ENOENT;
 808         }
 809
 810         if (params->vlan && params->vlan != sta->sdata->dev) {
 811                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 812
 813                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 814                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 815                         rcu_read_unlock();
 816                         return -EINVAL;
 817                 }
 818
 819                 if (params->vlan->ieee80211_ptr->use_4addr) {
 820                         if (vlansdata->u.vlan.sta) {
 821                                 rcu_read_unlock();
 822                                 return -EBUSY;
 823                         }
 824
 825                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 826                 }
 827
 828                 sta->sdata = vlansdata;
 829                 ieee80211_send_layer2_update(sta);
 830         }
 831
 832         sta_apply_parameters(local, sta, params);
 833
 834         rcu_read_unlock();
 835
 836         return 0;
 837 }
 838
 839 #ifdef CONFIG_MAC80211_MESH
 840 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 841                                  u8 *dst, u8 *next_hop)
 842 {
 843         struct ieee80211_sub_if_data *sdata;
 844         struct mesh_path *mpath;
 845         struct sta_info *sta;
 846         int err;
 847
 848         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 849
 850         rcu_read_lock();
 851         sta = sta_info_get(sdata, next_hop);
 852         if (!sta) {
 853                 rcu_read_unlock();
 854                 return -ENOENT;
 855         }
 856
 857         err = mesh_path_add(dst, sdata);
 858         if (err) {
 859                 rcu_read_unlock();
 860                 return err;
 861         }
 862
 863         mpath = mesh_path_lookup(dst, sdata);
 864         if (!mpath) {
 865                 rcu_read_unlock();
 866                 return -ENXIO;
 867         }
 868         mesh_path_fix_nexthop(mpath, sta);
 869
 870         rcu_read_unlock();
 871         return 0;
 872 }
 873
 874 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 875                                  u8 *dst)
 876 {
 877         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 878
 879         if (dst)
 880                 return mesh_path_del(dst, sdata);
 881
 882         mesh_path_flush(sdata);
 883         return 0;
 884 }
 885
 886 static int ieee80211_change_mpath(struct wiphy *wiphy,
 887                                     struct net_device *dev,
 888                                     u8 *dst, u8 *next_hop)
 889 {
 890         struct ieee80211_sub_if_data *sdata;
 891         struct mesh_path *mpath;
 892         struct sta_info *sta;
 893
 894         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 895
 896         rcu_read_lock();
 897
 898         sta = sta_info_get(sdata, next_hop);
 899         if (!sta) {
 900                 rcu_read_unlock();
 901                 return -ENOENT;
 902         }
 903
 904         mpath = mesh_path_lookup(dst, sdata);
 905         if (!mpath) {
 906                 rcu_read_unlock();
 907                 return -ENOENT;
 908         }
 909
 910         mesh_path_fix_nexthop(mpath, sta);
 911
 912         rcu_read_unlock();
 913         return 0;
 914 }
 915
 916 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 917                             struct mpath_info *pinfo)
 918 {
 919         if (mpath->next_hop)
 920                 memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN);
 921         else
 922                 memset(next_hop, 0, ETH_ALEN);
 923
 924         pinfo->generation = mesh_paths_generation;
 925
 926         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 927                         MPATH_INFO_SN |
 928                         MPATH_INFO_METRIC |
 929                         MPATH_INFO_EXPTIME |
 930                         MPATH_INFO_DISCOVERY_TIMEOUT |
 931                         MPATH_INFO_DISCOVERY_RETRIES |
 932                         MPATH_INFO_FLAGS;
 933
 934         pinfo->frame_qlen = mpath->frame_queue.qlen;
 935         pinfo->sn = mpath->sn;
 936         pinfo->metric = mpath->metric;
 937         if (time_before(jiffies, mpath->exp_time))
 938                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 939         pinfo->discovery_timeout =
 940                         jiffies_to_msecs(mpath->discovery_timeout);
 941         pinfo->discovery_retries = mpath->discovery_retries;
 942         pinfo->flags = 0;
 943         if (mpath->flags & MESH_PATH_ACTIVE)
 944                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 945         if (mpath->flags & MESH_PATH_RESOLVING)
 946                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 947         if (mpath->flags & MESH_PATH_SN_VALID)
 948                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
 949         if (mpath->flags & MESH_PATH_FIXED)
 950                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 951         if (mpath->flags & MESH_PATH_RESOLVING)
 952                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 953
 954         pinfo->flags = mpath->flags;
 955 }
 956
 957 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 958                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 959
 960 {
 961         struct ieee80211_sub_if_data *sdata;
 962         struct mesh_path *mpath;
 963
 964         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 965
 966         rcu_read_lock();
 967         mpath = mesh_path_lookup(dst, sdata);
 968         if (!mpath) {
 969                 rcu_read_unlock();
 970                 return -ENOENT;
 971         }
 972         memcpy(dst, mpath->dst, ETH_ALEN);
 973         mpath_set_pinfo(mpath, next_hop, pinfo);
 974         rcu_read_unlock();
 975         return 0;
 976 }
 977
 978 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
 979                                  int idx, u8 *dst, u8 *next_hop,
 980                                  struct mpath_info *pinfo)
 981 {
 982         struct ieee80211_sub_if_data *sdata;
 983         struct mesh_path *mpath;
 984
 985         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 986
 987         rcu_read_lock();
 988         mpath = mesh_path_lookup_by_idx(idx, sdata);
 989         if (!mpath) {
 990                 rcu_read_unlock();
 991                 return -ENOENT;
 992         }
 993         memcpy(dst, mpath->dst, ETH_ALEN);
 994         mpath_set_pinfo(mpath, next_hop, pinfo);
 995         rcu_read_unlock();
 996         return 0;
 997 }
 998
 999 static int ieee80211_get_mesh_params(struct wiphy *wiphy,
1000                                 struct net_device *dev,
1001                                 struct mesh_config *conf)
1002 {
1003         struct ieee80211_sub_if_data *sdata;
1004         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1005
1006         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1007         return 0;
1008 }
1009
1010 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1011 {
1012         return (mask >> (parm-1)) & 0x1;
1013 }
1014
1015 static int ieee80211_set_mesh_params(struct wiphy *wiphy,
1016                                 struct net_device *dev,
1017                                 const struct mesh_config *nconf, u32 mask)
1018 {
1019         struct mesh_config *conf;
1020         struct ieee80211_sub_if_data *sdata;
1021         struct ieee80211_if_mesh *ifmsh;
1022
1023         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1024         ifmsh = &sdata->u.mesh;
1025
1026         /* Set the config options which we are interested in setting */
1027         conf = &(sdata->u.mesh.mshcfg);
1028         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1029                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1030         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1031                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1032         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1033                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1034         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1035                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1036         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1037                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1038         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1039                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1040         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1041                 conf->auto_open_plinks = nconf->auto_open_plinks;
1042         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1043                 conf->dot11MeshHWMPmaxPREQretries =
1044                         nconf->dot11MeshHWMPmaxPREQretries;
1045         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1046                 conf->path_refresh_time = nconf->path_refresh_time;
1047         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1048                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1049         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1050                 conf->dot11MeshHWMPactivePathTimeout =
1051                         nconf->dot11MeshHWMPactivePathTimeout;
1052         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1053                 conf->dot11MeshHWMPpreqMinInterval =
1054                         nconf->dot11MeshHWMPpreqMinInterval;
1055         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1056                            mask))
1057                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1058                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1059         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1060                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1061                 ieee80211_mesh_root_setup(ifmsh);
1062         }
1063         return 0;
1064 }
1065
1066 #endif
1067
1068 static int ieee80211_change_bss(struct wiphy *wiphy,
1069                                 struct net_device *dev,
1070                                 struct bss_parameters *params)
1071 {
1072         struct ieee80211_sub_if_data *sdata;
1073         u32 changed = 0;
1074
1075         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1076
1077         if (params->use_cts_prot >= 0) {
1078                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1079                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1080         }
1081         if (params->use_short_preamble >= 0) {
1082                 sdata->vif.bss_conf.use_short_preamble =
1083                         params->use_short_preamble;
1084                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1085         }
1086
1087         if (!sdata->vif.bss_conf.use_short_slot &&
1088             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1089                 sdata->vif.bss_conf.use_short_slot = true;
1090                 changed |= BSS_CHANGED_ERP_SLOT;
1091         }
1092
1093         if (params->use_short_slot_time >= 0) {
1094                 sdata->vif.bss_conf.use_short_slot =
1095                         params->use_short_slot_time;
1096                 changed |= BSS_CHANGED_ERP_SLOT;
1097         }
1098
1099         if (params->basic_rates) {
1100                 int i, j;
1101                 u32 rates = 0;
1102                 struct ieee80211_local *local = wiphy_priv(wiphy);
1103                 struct ieee80211_supported_band *sband =
1104                         wiphy->bands[local->oper_channel->band];
1105
1106                 for (i = 0; i < params->basic_rates_len; i++) {
1107                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1108                         for (j = 0; j < sband->n_bitrates; j++) {
1109                                 if (sband->bitrates[j].bitrate == rate)
1110                                         rates |= BIT(j);
1111                         }
1112                 }
1113                 sdata->vif.bss_conf.basic_rates = rates;
1114                 changed |= BSS_CHANGED_BASIC_RATES;
1115         }
1116
1117         if (params->ap_isolate >= 0) {
1118                 if (params->ap_isolate)
1119                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1120                 else
1121                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1122         }
1123
1124         ieee80211_bss_info_change_notify(sdata, changed);
1125
1126         return 0;
1127 }
1128
1129 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1130                                     struct ieee80211_txq_params *params)
1131 {
1132         struct ieee80211_local *local = wiphy_priv(wiphy);
1133         struct ieee80211_tx_queue_params p;
1134
1135         if (!local->ops->conf_tx)
1136                 return -EOPNOTSUPP;
1137
1138         memset(&p, 0, sizeof(p));
1139         p.aifs = params->aifs;
1140         p.cw_max = params->cwmax;
1141         p.cw_min = params->cwmin;
1142         p.txop = params->txop;
1143
1144         /*
1145          * Setting tx queue params disables u-apsd because it's only
1146          * called in master mode.
1147          */
1148         p.uapsd = false;
1149
1150         if (drv_conf_tx(local, params->queue, &p)) {
1151                 printk(KERN_DEBUG "%s: failed to set TX queue "
1152                        "parameters for queue %d\n",
1153                        wiphy_name(local->hw.wiphy), params->queue);
1154                 return -EINVAL;
1155         }
1156
1157         /* enable WMM or activate new settings */
1158         local->hw.conf.flags |= IEEE80211_CONF_QOS;
1159         drv_config(local, IEEE80211_CONF_CHANGE_QOS);
1160
1161         return 0;
1162 }
1163
1164 static int ieee80211_set_channel(struct wiphy *wiphy,
1165                                  struct net_device *netdev,
1166                                  struct ieee80211_channel *chan,
1167                                  enum nl80211_channel_type channel_type)
1168 {
1169         struct ieee80211_local *local = wiphy_priv(wiphy);
1170         struct ieee80211_sub_if_data *sdata = NULL;
1171
1172         if (netdev)
1173                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1174
1175         switch (ieee80211_get_channel_mode(local, NULL)) {
1176         case CHAN_MODE_HOPPING:
1177                 return -EBUSY;
1178         case CHAN_MODE_FIXED:
1179                 if (local->oper_channel != chan)
1180                         return -EBUSY;
1181                 if (!sdata && local->_oper_channel_type == channel_type)
1182                         return 0;
1183                 break;
1184         case CHAN_MODE_UNDEFINED:
1185                 break;
1186         }
1187
1188         local->oper_channel = chan;
1189
1190         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1191                 return -EBUSY;
1192
1193         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1194         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR)
1195                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1196
1197         return 0;
1198 }
1199
1200 #ifdef CONFIG_PM
1201 static int ieee80211_suspend(struct wiphy *wiphy)
1202 {
1203         return __ieee80211_suspend(wiphy_priv(wiphy));
1204 }
1205
1206 static int ieee80211_resume(struct wiphy *wiphy)
1207 {
1208         return __ieee80211_resume(wiphy_priv(wiphy));
1209 }
1210 #else
1211 #define ieee80211_suspend NULL
1212 #define ieee80211_resume NULL
1213 #endif
1214
1215 static int ieee80211_scan(struct wiphy *wiphy,
1216                           struct net_device *dev,
1217                           struct cfg80211_scan_request *req)
1218 {
1219         struct ieee80211_sub_if_data *sdata;
1220
1221         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1222
1223         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
1224             sdata->vif.type != NL80211_IFTYPE_ADHOC &&
1225             sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
1226             (sdata->vif.type != NL80211_IFTYPE_AP || sdata->u.ap.beacon))
1227                 return -EOPNOTSUPP;
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_COVERAGE_CLASS) {
1309                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1310
1311                 if (err)
1312                         return err;
1313         }
1314
1315         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1316                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1317
1318                 if (err)
1319                         return err;
1320         }
1321
1322         if (changed & WIPHY_PARAM_RETRY_SHORT)
1323                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1324         if (changed & WIPHY_PARAM_RETRY_LONG)
1325                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1326         if (changed &
1327             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1328                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1329
1330         return 0;
1331 }
1332
1333 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1334                                   enum tx_power_setting type, int dbm)
1335 {
1336         struct ieee80211_local *local = wiphy_priv(wiphy);
1337         struct ieee80211_channel *chan = local->hw.conf.channel;
1338         u32 changes = 0;
1339
1340         switch (type) {
1341         case TX_POWER_AUTOMATIC:
1342                 local->user_power_level = -1;
1343                 break;
1344         case TX_POWER_LIMITED:
1345                 if (dbm < 0)
1346                         return -EINVAL;
1347                 local->user_power_level = dbm;
1348                 break;
1349         case TX_POWER_FIXED:
1350                 if (dbm < 0)
1351                         return -EINVAL;
1352                 /* TODO: move to cfg80211 when it knows the channel */
1353                 if (dbm > chan->max_power)
1354                         return -EINVAL;
1355                 local->user_power_level = dbm;
1356                 break;
1357         }
1358
1359         ieee80211_hw_config(local, changes);
1360
1361         return 0;
1362 }
1363
1364 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1365 {
1366         struct ieee80211_local *local = wiphy_priv(wiphy);
1367
1368         *dbm = local->hw.conf.power_level;
1369
1370         return 0;
1371 }
1372
1373 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1374                                   u8 *addr)
1375 {
1376         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1377
1378         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1379
1380         return 0;
1381 }
1382
1383 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1384 {
1385         struct ieee80211_local *local = wiphy_priv(wiphy);
1386
1387         drv_rfkill_poll(local);
1388 }
1389
1390 #ifdef CONFIG_NL80211_TESTMODE
1391 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1392 {
1393         struct ieee80211_local *local = wiphy_priv(wiphy);
1394
1395         if (!local->ops->testmode_cmd)
1396                 return -EOPNOTSUPP;
1397
1398         return local->ops->testmode_cmd(&local->hw, data, len);
1399 }
1400 #endif
1401
1402 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1403                              enum ieee80211_smps_mode smps_mode)
1404 {
1405         const u8 *ap;
1406         enum ieee80211_smps_mode old_req;
1407         int err;
1408
1409         old_req = sdata->u.mgd.req_smps;
1410         sdata->u.mgd.req_smps = smps_mode;
1411
1412         if (old_req == smps_mode &&
1413             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1414                 return 0;
1415
1416         /*
1417          * If not associated, or current association is not an HT
1418          * association, there's no need to send an action frame.
1419          */
1420         if (!sdata->u.mgd.associated ||
1421             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1422                 mutex_lock(&sdata->local->iflist_mtx);
1423                 ieee80211_recalc_smps(sdata->local, sdata);
1424                 mutex_unlock(&sdata->local->iflist_mtx);
1425                 return 0;
1426         }
1427
1428         ap = sdata->u.mgd.associated->bssid;
1429
1430         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1431                 if (sdata->u.mgd.powersave)
1432                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1433                 else
1434                         smps_mode = IEEE80211_SMPS_OFF;
1435         }
1436
1437         /* send SM PS frame to AP */
1438         err = ieee80211_send_smps_action(sdata, smps_mode,
1439                                          ap, ap);
1440         if (err)
1441                 sdata->u.mgd.req_smps = old_req;
1442
1443         return err;
1444 }
1445
1446 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1447                                     bool enabled, int timeout)
1448 {
1449         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1450         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1451         struct ieee80211_conf *conf = &local->hw.conf;
1452
1453         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1454                 return -EOPNOTSUPP;
1455
1456         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1457                 return -EOPNOTSUPP;
1458
1459         if (enabled == sdata->u.mgd.powersave &&
1460             timeout == conf->dynamic_ps_forced_timeout)
1461                 return 0;
1462
1463         sdata->u.mgd.powersave = enabled;
1464         conf->dynamic_ps_forced_timeout = timeout;
1465
1466         /* no change, but if automatic follow powersave */
1467         mutex_lock(&sdata->u.mgd.mtx);
1468         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1469         mutex_unlock(&sdata->u.mgd.mtx);
1470
1471         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1472                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1473
1474         ieee80211_recalc_ps(local, -1);
1475
1476         return 0;
1477 }
1478
1479 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1480                                          struct net_device *dev,
1481                                          s32 rssi_thold, u32 rssi_hyst)
1482 {
1483         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1484         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1485         struct ieee80211_vif *vif = &sdata->vif;
1486         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1487
1488         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1489             rssi_hyst == bss_conf->cqm_rssi_hyst)
1490                 return 0;
1491
1492         bss_conf->cqm_rssi_thold = rssi_thold;
1493         bss_conf->cqm_rssi_hyst = rssi_hyst;
1494
1495         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1496                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1497                         return -EOPNOTSUPP;
1498                 return 0;
1499         }
1500
1501         /* tell the driver upon association, unless already associated */
1502         if (sdata->u.mgd.associated)
1503                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1504
1505         return 0;
1506 }
1507
1508 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1509                                       struct net_device *dev,
1510                                       const u8 *addr,
1511                                       const struct cfg80211_bitrate_mask *mask)
1512 {
1513         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1514         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1515         int i;
1516
1517         /*
1518          * This _could_ be supported by providing a hook for
1519          * drivers for this function, but at this point it
1520          * doesn't seem worth bothering.
1521          */
1522         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
1523                 return -EOPNOTSUPP;
1524
1525
1526         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1527                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1528
1529         return 0;
1530 }
1531
1532 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1533                                        struct net_device *dev,
1534                                        struct ieee80211_channel *chan,
1535                                        enum nl80211_channel_type channel_type,
1536                                        unsigned int duration,
1537                                        u64 *cookie)
1538 {
1539         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1540
1541         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1542                                               duration, cookie);
1543 }
1544
1545 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1546                                               struct net_device *dev,
1547                                               u64 cookie)
1548 {
1549         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1550
1551         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1552 }
1553
1554 static int ieee80211_action(struct wiphy *wiphy, struct net_device *dev,
1555                             struct ieee80211_channel *chan,
1556                             enum nl80211_channel_type channel_type,
1557                             const u8 *buf, size_t len, u64 *cookie)
1558 {
1559         return ieee80211_mgd_action(IEEE80211_DEV_TO_SUB_IF(dev), chan,
1560                                     channel_type, buf, len, cookie);
1561 }
1562
1563 struct cfg80211_ops mac80211_config_ops = {
1564         .add_virtual_intf = ieee80211_add_iface,
1565         .del_virtual_intf = ieee80211_del_iface,
1566         .change_virtual_intf = ieee80211_change_iface,
1567         .add_key = ieee80211_add_key,
1568         .del_key = ieee80211_del_key,
1569         .get_key = ieee80211_get_key,
1570         .set_default_key = ieee80211_config_default_key,
1571         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
1572         .add_beacon = ieee80211_add_beacon,
1573         .set_beacon = ieee80211_set_beacon,
1574         .del_beacon = ieee80211_del_beacon,
1575         .add_station = ieee80211_add_station,
1576         .del_station = ieee80211_del_station,
1577         .change_station = ieee80211_change_station,
1578         .get_station = ieee80211_get_station,
1579         .dump_station = ieee80211_dump_station,
1580         .dump_survey = ieee80211_dump_survey,
1581 #ifdef CONFIG_MAC80211_MESH
1582         .add_mpath = ieee80211_add_mpath,
1583         .del_mpath = ieee80211_del_mpath,
1584         .change_mpath = ieee80211_change_mpath,
1585         .get_mpath = ieee80211_get_mpath,
1586         .dump_mpath = ieee80211_dump_mpath,
1587         .set_mesh_params = ieee80211_set_mesh_params,
1588         .get_mesh_params = ieee80211_get_mesh_params,
1589 #endif
1590         .change_bss = ieee80211_change_bss,
1591         .set_txq_params = ieee80211_set_txq_params,
1592         .set_channel = ieee80211_set_channel,
1593         .suspend = ieee80211_suspend,
1594         .resume = ieee80211_resume,
1595         .scan = ieee80211_scan,
1596         .auth = ieee80211_auth,
1597         .assoc = ieee80211_assoc,
1598         .deauth = ieee80211_deauth,
1599         .disassoc = ieee80211_disassoc,
1600         .join_ibss = ieee80211_join_ibss,
1601         .leave_ibss = ieee80211_leave_ibss,
1602         .set_wiphy_params = ieee80211_set_wiphy_params,
1603         .set_tx_power = ieee80211_set_tx_power,
1604         .get_tx_power = ieee80211_get_tx_power,
1605         .set_wds_peer = ieee80211_set_wds_peer,
1606         .rfkill_poll = ieee80211_rfkill_poll,
1607         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
1608         .set_power_mgmt = ieee80211_set_power_mgmt,
1609         .set_bitrate_mask = ieee80211_set_bitrate_mask,
1610         .remain_on_channel = ieee80211_remain_on_channel,
1611         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
1612         .action = ieee80211_action,
1613         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
1614 };