1 /* 2 * mac80211 configuration hooks for cfg80211 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * 6 * This file is GPLv2 as found in COPYING. 7 */ 8 9 #include <linux/ieee80211.h> 10 #include <linux/nl80211.h> 11 #include <linux/rtnetlink.h> 12 #include <linux/slab.h> 13 #include <net/net_namespace.h> 14 #include <linux/rcupdate.h> 15 #include <linux/if_ether.h> 16 #include <net/cfg80211.h> 17 #include "ieee80211_i.h" 18 #include "driver-ops.h" 19 #include "cfg.h" 20 #include "rate.h" 21 #include "mesh.h" 22 23 static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name, 24 enum nl80211_iftype type, 25 u32 *flags, 26 struct vif_params *params) 27 { 28 struct ieee80211_local *local = wiphy_priv(wiphy); 29 struct net_device *dev; 30 struct ieee80211_sub_if_data *sdata; 31 int err; 32 33 err = ieee80211_if_add(local, name, &dev, type, params); 34 if (err) 35 return ERR_PTR(err); 36 37 if (type == NL80211_IFTYPE_MONITOR && flags) { 38 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 39 sdata->u.mntr_flags = *flags; 40 } 41 42 return dev; 43 } 44 45 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev) 46 { 47 ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev)); 48 49 return 0; 50 } 51 52 static int ieee80211_change_iface(struct wiphy *wiphy, 53 struct net_device *dev, 54 enum nl80211_iftype type, u32 *flags, 55 struct vif_params *params) 56 { 57 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 58 int ret; 59 60 ret = ieee80211_if_change_type(sdata, type); 61 if (ret) 62 return ret; 63 64 if (type == NL80211_IFTYPE_AP_VLAN && 65 params && params->use_4addr == 0) 66 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); 67 else if (type == NL80211_IFTYPE_STATION && 68 params && params->use_4addr >= 0) 69 sdata->u.mgd.use_4addr = params->use_4addr; 70 71 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) { 72 struct ieee80211_local *local = sdata->local; 73 74 if (ieee80211_sdata_running(sdata)) { 75 /* 76 * Prohibit MONITOR_FLAG_COOK_FRAMES to be 77 * changed while the interface is up. 78 * Else we would need to add a lot of cruft 79 * to update everything: 80 * cooked_mntrs, monitor and all fif_* counters 81 * reconfigure hardware 82 */ 83 if ((*flags & MONITOR_FLAG_COOK_FRAMES) != 84 (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES)) 85 return -EBUSY; 86 87 ieee80211_adjust_monitor_flags(sdata, -1); 88 sdata->u.mntr_flags = *flags; 89 ieee80211_adjust_monitor_flags(sdata, 1); 90 91 ieee80211_configure_filter(local); 92 } else { 93 /* 94 * Because the interface is down, ieee80211_do_stop 95 * and ieee80211_do_open take care of "everything" 96 * mentioned in the comment above. 97 */ 98 sdata->u.mntr_flags = *flags; 99 } 100 } 101 102 return 0; 103 } 104 105 static int ieee80211_set_noack_map(struct wiphy *wiphy, 106 struct net_device *dev, 107 u16 noack_map) 108 { 109 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 110 111 sdata->noack_map = noack_map; 112 return 0; 113 } 114 115 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 116 u8 key_idx, bool pairwise, const u8 *mac_addr, 117 struct key_params *params) 118 { 119 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 120 struct sta_info *sta = NULL; 121 struct ieee80211_key *key; 122 int err; 123 124 if (!ieee80211_sdata_running(sdata)) 125 return -ENETDOWN; 126 127 /* reject WEP and TKIP keys if WEP failed to initialize */ 128 switch (params->cipher) { 129 case WLAN_CIPHER_SUITE_WEP40: 130 case WLAN_CIPHER_SUITE_TKIP: 131 case WLAN_CIPHER_SUITE_WEP104: 132 if (IS_ERR(sdata->local->wep_tx_tfm)) 133 return -EINVAL; 134 break; 135 default: 136 break; 137 } 138 139 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 140 params->key, params->seq_len, params->seq); 141 if (IS_ERR(key)) 142 return PTR_ERR(key); 143 144 if (pairwise) 145 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 146 147 mutex_lock(&sdata->local->sta_mtx); 148 149 if (mac_addr) { 150 if (ieee80211_vif_is_mesh(&sdata->vif)) 151 sta = sta_info_get(sdata, mac_addr); 152 else 153 sta = sta_info_get_bss(sdata, mac_addr); 154 if (!sta) { 155 ieee80211_key_free(sdata->local, key); 156 err = -ENOENT; 157 goto out_unlock; 158 } 159 } 160 161 err = ieee80211_key_link(key, sdata, sta); 162 if (err) 163 ieee80211_key_free(sdata->local, key); 164 165 out_unlock: 166 mutex_unlock(&sdata->local->sta_mtx); 167 168 return err; 169 } 170 171 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 172 u8 key_idx, bool pairwise, const u8 *mac_addr) 173 { 174 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 175 struct ieee80211_local *local = sdata->local; 176 struct sta_info *sta; 177 struct ieee80211_key *key = NULL; 178 int ret; 179 180 mutex_lock(&local->sta_mtx); 181 mutex_lock(&local->key_mtx); 182 183 if (mac_addr) { 184 ret = -ENOENT; 185 186 sta = sta_info_get_bss(sdata, mac_addr); 187 if (!sta) 188 goto out_unlock; 189 190 if (pairwise) 191 key = key_mtx_dereference(local, sta->ptk); 192 else 193 key = key_mtx_dereference(local, sta->gtk[key_idx]); 194 } else 195 key = key_mtx_dereference(local, sdata->keys[key_idx]); 196 197 if (!key) { 198 ret = -ENOENT; 199 goto out_unlock; 200 } 201 202 __ieee80211_key_free(key); 203 204 ret = 0; 205 out_unlock: 206 mutex_unlock(&local->key_mtx); 207 mutex_unlock(&local->sta_mtx); 208 209 return ret; 210 } 211 212 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 213 u8 key_idx, bool pairwise, const u8 *mac_addr, 214 void *cookie, 215 void (*callback)(void *cookie, 216 struct key_params *params)) 217 { 218 struct ieee80211_sub_if_data *sdata; 219 struct sta_info *sta = NULL; 220 u8 seq[6] = {0}; 221 struct key_params params; 222 struct ieee80211_key *key = NULL; 223 u64 pn64; 224 u32 iv32; 225 u16 iv16; 226 int err = -ENOENT; 227 228 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 229 230 rcu_read_lock(); 231 232 if (mac_addr) { 233 sta = sta_info_get_bss(sdata, mac_addr); 234 if (!sta) 235 goto out; 236 237 if (pairwise) 238 key = rcu_dereference(sta->ptk); 239 else if (key_idx < NUM_DEFAULT_KEYS) 240 key = rcu_dereference(sta->gtk[key_idx]); 241 } else 242 key = rcu_dereference(sdata->keys[key_idx]); 243 244 if (!key) 245 goto out; 246 247 memset(¶ms, 0, sizeof(params)); 248 249 params.cipher = key->conf.cipher; 250 251 switch (key->conf.cipher) { 252 case WLAN_CIPHER_SUITE_TKIP: 253 iv32 = key->u.tkip.tx.iv32; 254 iv16 = key->u.tkip.tx.iv16; 255 256 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 257 drv_get_tkip_seq(sdata->local, 258 key->conf.hw_key_idx, 259 &iv32, &iv16); 260 261 seq[0] = iv16 & 0xff; 262 seq[1] = (iv16 >> 8) & 0xff; 263 seq[2] = iv32 & 0xff; 264 seq[3] = (iv32 >> 8) & 0xff; 265 seq[4] = (iv32 >> 16) & 0xff; 266 seq[5] = (iv32 >> 24) & 0xff; 267 params.seq = seq; 268 params.seq_len = 6; 269 break; 270 case WLAN_CIPHER_SUITE_CCMP: 271 pn64 = atomic64_read(&key->u.ccmp.tx_pn); 272 seq[0] = pn64; 273 seq[1] = pn64 >> 8; 274 seq[2] = pn64 >> 16; 275 seq[3] = pn64 >> 24; 276 seq[4] = pn64 >> 32; 277 seq[5] = pn64 >> 40; 278 params.seq = seq; 279 params.seq_len = 6; 280 break; 281 case WLAN_CIPHER_SUITE_AES_CMAC: 282 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn); 283 seq[0] = pn64; 284 seq[1] = pn64 >> 8; 285 seq[2] = pn64 >> 16; 286 seq[3] = pn64 >> 24; 287 seq[4] = pn64 >> 32; 288 seq[5] = pn64 >> 40; 289 params.seq = seq; 290 params.seq_len = 6; 291 break; 292 } 293 294 params.key = key->conf.key; 295 params.key_len = key->conf.keylen; 296 297 callback(cookie, ¶ms); 298 err = 0; 299 300 out: 301 rcu_read_unlock(); 302 return err; 303 } 304 305 static int ieee80211_config_default_key(struct wiphy *wiphy, 306 struct net_device *dev, 307 u8 key_idx, bool uni, 308 bool multi) 309 { 310 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 311 312 ieee80211_set_default_key(sdata, key_idx, uni, multi); 313 314 return 0; 315 } 316 317 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 318 struct net_device *dev, 319 u8 key_idx) 320 { 321 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 322 323 ieee80211_set_default_mgmt_key(sdata, key_idx); 324 325 return 0; 326 } 327 328 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx) 329 { 330 if (!(rate->flags & RATE_INFO_FLAGS_MCS)) { 331 struct ieee80211_supported_band *sband; 332 sband = sta->local->hw.wiphy->bands[ 333 sta->local->hw.conf.channel->band]; 334 rate->legacy = sband->bitrates[idx].bitrate; 335 } else 336 rate->mcs = idx; 337 } 338 339 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 340 { 341 struct ieee80211_sub_if_data *sdata = sta->sdata; 342 struct timespec uptime; 343 344 sinfo->generation = sdata->local->sta_generation; 345 346 sinfo->filled = STATION_INFO_INACTIVE_TIME | 347 STATION_INFO_RX_BYTES | 348 STATION_INFO_TX_BYTES | 349 STATION_INFO_RX_PACKETS | 350 STATION_INFO_TX_PACKETS | 351 STATION_INFO_TX_RETRIES | 352 STATION_INFO_TX_FAILED | 353 STATION_INFO_TX_BITRATE | 354 STATION_INFO_RX_BITRATE | 355 STATION_INFO_RX_DROP_MISC | 356 STATION_INFO_BSS_PARAM | 357 STATION_INFO_CONNECTED_TIME | 358 STATION_INFO_STA_FLAGS | 359 STATION_INFO_BEACON_LOSS_COUNT; 360 361 do_posix_clock_monotonic_gettime(&uptime); 362 sinfo->connected_time = uptime.tv_sec - sta->last_connected; 363 364 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); 365 sinfo->rx_bytes = sta->rx_bytes; 366 sinfo->tx_bytes = sta->tx_bytes; 367 sinfo->rx_packets = sta->rx_packets; 368 sinfo->tx_packets = sta->tx_packets; 369 sinfo->tx_retries = sta->tx_retry_count; 370 sinfo->tx_failed = sta->tx_retry_failed; 371 sinfo->rx_dropped_misc = sta->rx_dropped; 372 sinfo->beacon_loss_count = sta->beacon_loss_count; 373 374 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || 375 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { 376 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG; 377 sinfo->signal = (s8)sta->last_signal; 378 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); 379 } 380 381 sinfo->txrate.flags = 0; 382 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS) 383 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS; 384 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 385 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 386 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI) 387 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 388 rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx); 389 390 sinfo->rxrate.flags = 0; 391 if (sta->last_rx_rate_flag & RX_FLAG_HT) 392 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS; 393 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 394 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 395 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 396 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 397 rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx); 398 399 if (ieee80211_vif_is_mesh(&sdata->vif)) { 400 #ifdef CONFIG_MAC80211_MESH 401 sinfo->filled |= STATION_INFO_LLID | 402 STATION_INFO_PLID | 403 STATION_INFO_PLINK_STATE; 404 405 sinfo->llid = le16_to_cpu(sta->llid); 406 sinfo->plid = le16_to_cpu(sta->plid); 407 sinfo->plink_state = sta->plink_state; 408 #endif 409 } 410 411 sinfo->bss_param.flags = 0; 412 if (sdata->vif.bss_conf.use_cts_prot) 413 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; 414 if (sdata->vif.bss_conf.use_short_preamble) 415 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; 416 if (sdata->vif.bss_conf.use_short_slot) 417 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; 418 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period; 419 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; 420 421 sinfo->sta_flags.set = 0; 422 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 423 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 424 BIT(NL80211_STA_FLAG_WME) | 425 BIT(NL80211_STA_FLAG_MFP) | 426 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 427 BIT(NL80211_STA_FLAG_TDLS_PEER); 428 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 429 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); 430 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) 431 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 432 if (test_sta_flag(sta, WLAN_STA_WME)) 433 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); 434 if (test_sta_flag(sta, WLAN_STA_MFP)) 435 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); 436 if (test_sta_flag(sta, WLAN_STA_AUTH)) 437 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); 438 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 439 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); 440 } 441 442 443 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 444 int idx, u8 *mac, struct station_info *sinfo) 445 { 446 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 447 struct sta_info *sta; 448 int ret = -ENOENT; 449 450 rcu_read_lock(); 451 452 sta = sta_info_get_by_idx(sdata, idx); 453 if (sta) { 454 ret = 0; 455 memcpy(mac, sta->sta.addr, ETH_ALEN); 456 sta_set_sinfo(sta, sinfo); 457 } 458 459 rcu_read_unlock(); 460 461 return ret; 462 } 463 464 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 465 int idx, struct survey_info *survey) 466 { 467 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 468 469 return drv_get_survey(local, idx, survey); 470 } 471 472 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 473 u8 *mac, struct station_info *sinfo) 474 { 475 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 476 struct sta_info *sta; 477 int ret = -ENOENT; 478 479 rcu_read_lock(); 480 481 sta = sta_info_get_bss(sdata, mac); 482 if (sta) { 483 ret = 0; 484 sta_set_sinfo(sta, sinfo); 485 } 486 487 rcu_read_unlock(); 488 489 return ret; 490 } 491 492 static void ieee80211_config_ap_ssid(struct ieee80211_sub_if_data *sdata, 493 struct beacon_parameters *params) 494 { 495 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; 496 497 bss_conf->ssid_len = params->ssid_len; 498 499 if (params->ssid_len) 500 memcpy(bss_conf->ssid, params->ssid, params->ssid_len); 501 502 bss_conf->hidden_ssid = 503 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 504 } 505 506 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 507 u8 *resp, size_t resp_len) 508 { 509 struct sk_buff *new, *old; 510 511 if (!resp || !resp_len) 512 return -EINVAL; 513 514 old = rtnl_dereference(sdata->u.ap.probe_resp); 515 516 new = dev_alloc_skb(resp_len); 517 if (!new) 518 return -ENOMEM; 519 520 memcpy(skb_put(new, resp_len), resp, resp_len); 521 522 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 523 synchronize_rcu(); 524 525 if (old) 526 dev_kfree_skb(old); 527 528 return 0; 529 } 530 531 /* 532 * This handles both adding a beacon and setting new beacon info 533 */ 534 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, 535 struct beacon_parameters *params) 536 { 537 struct beacon_data *new, *old; 538 int new_head_len, new_tail_len; 539 int size; 540 int err = -EINVAL; 541 u32 changed = 0; 542 543 old = rtnl_dereference(sdata->u.ap.beacon); 544 545 /* head must not be zero-length */ 546 if (params->head && !params->head_len) 547 return -EINVAL; 548 549 /* 550 * This is a kludge. beacon interval should really be part 551 * of the beacon information. 552 */ 553 if (params->interval && 554 (sdata->vif.bss_conf.beacon_int != params->interval)) { 555 sdata->vif.bss_conf.beacon_int = params->interval; 556 ieee80211_bss_info_change_notify(sdata, 557 BSS_CHANGED_BEACON_INT); 558 } 559 560 /* Need to have a beacon head if we don't have one yet */ 561 if (!params->head && !old) 562 return err; 563 564 /* sorry, no way to start beaconing without dtim period */ 565 if (!params->dtim_period && !old) 566 return err; 567 568 /* new or old head? */ 569 if (params->head) 570 new_head_len = params->head_len; 571 else 572 new_head_len = old->head_len; 573 574 /* new or old tail? */ 575 if (params->tail || !old) 576 /* params->tail_len will be zero for !params->tail */ 577 new_tail_len = params->tail_len; 578 else 579 new_tail_len = old->tail_len; 580 581 size = sizeof(*new) + new_head_len + new_tail_len; 582 583 new = kzalloc(size, GFP_KERNEL); 584 if (!new) 585 return -ENOMEM; 586 587 /* start filling the new info now */ 588 589 /* new or old dtim period? */ 590 if (params->dtim_period) 591 new->dtim_period = params->dtim_period; 592 else 593 new->dtim_period = old->dtim_period; 594 595 /* 596 * pointers go into the block we allocated, 597 * memory is | beacon_data | head | tail | 598 */ 599 new->head = ((u8 *) new) + sizeof(*new); 600 new->tail = new->head + new_head_len; 601 new->head_len = new_head_len; 602 new->tail_len = new_tail_len; 603 604 /* copy in head */ 605 if (params->head) 606 memcpy(new->head, params->head, new_head_len); 607 else 608 memcpy(new->head, old->head, new_head_len); 609 610 /* copy in optional tail */ 611 if (params->tail) 612 memcpy(new->tail, params->tail, new_tail_len); 613 else 614 if (old) 615 memcpy(new->tail, old->tail, new_tail_len); 616 617 sdata->vif.bss_conf.dtim_period = new->dtim_period; 618 619 rcu_assign_pointer(sdata->u.ap.beacon, new); 620 621 synchronize_rcu(); 622 623 kfree(old); 624 625 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 626 params->probe_resp_len); 627 if (!err) 628 changed |= BSS_CHANGED_AP_PROBE_RESP; 629 630 ieee80211_config_ap_ssid(sdata, params); 631 changed |= BSS_CHANGED_BEACON_ENABLED | 632 BSS_CHANGED_BEACON | 633 BSS_CHANGED_SSID; 634 635 ieee80211_bss_info_change_notify(sdata, changed); 636 return 0; 637 } 638 639 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev, 640 struct beacon_parameters *params) 641 { 642 struct ieee80211_sub_if_data *sdata; 643 struct beacon_data *old; 644 struct ieee80211_sub_if_data *vlan; 645 int ret; 646 647 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 648 649 old = rtnl_dereference(sdata->u.ap.beacon); 650 if (old) 651 return -EALREADY; 652 653 ret = ieee80211_config_beacon(sdata, params); 654 if (ret) 655 return ret; 656 657 /* 658 * Apply control port protocol, this allows us to 659 * not encrypt dynamic WEP control frames. 660 */ 661 sdata->control_port_protocol = params->crypto.control_port_ethertype; 662 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 663 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 664 vlan->control_port_protocol = 665 params->crypto.control_port_ethertype; 666 vlan->control_port_no_encrypt = 667 params->crypto.control_port_no_encrypt; 668 } 669 670 return 0; 671 } 672 673 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev, 674 struct beacon_parameters *params) 675 { 676 struct ieee80211_sub_if_data *sdata; 677 struct beacon_data *old; 678 679 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 680 681 old = rtnl_dereference(sdata->u.ap.beacon); 682 if (!old) 683 return -ENOENT; 684 685 return ieee80211_config_beacon(sdata, params); 686 } 687 688 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev) 689 { 690 struct ieee80211_sub_if_data *sdata; 691 struct beacon_data *old; 692 693 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 694 695 old = rtnl_dereference(sdata->u.ap.beacon); 696 if (!old) 697 return -ENOENT; 698 699 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 700 synchronize_rcu(); 701 kfree(old); 702 703 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 704 return 0; 705 } 706 707 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 708 struct iapp_layer2_update { 709 u8 da[ETH_ALEN]; /* broadcast */ 710 u8 sa[ETH_ALEN]; /* STA addr */ 711 __be16 len; /* 6 */ 712 u8 dsap; /* 0 */ 713 u8 ssap; /* 0 */ 714 u8 control; 715 u8 xid_info[3]; 716 } __packed; 717 718 static void ieee80211_send_layer2_update(struct sta_info *sta) 719 { 720 struct iapp_layer2_update *msg; 721 struct sk_buff *skb; 722 723 /* Send Level 2 Update Frame to update forwarding tables in layer 2 724 * bridge devices */ 725 726 skb = dev_alloc_skb(sizeof(*msg)); 727 if (!skb) 728 return; 729 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 730 731 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 732 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 733 734 memset(msg->da, 0xff, ETH_ALEN); 735 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 736 msg->len = htons(6); 737 msg->dsap = 0; 738 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 739 msg->control = 0xaf; /* XID response lsb.1111F101. 740 * F=0 (no poll command; unsolicited frame) */ 741 msg->xid_info[0] = 0x81; /* XID format identifier */ 742 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 743 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 744 745 skb->dev = sta->sdata->dev; 746 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 747 memset(skb->cb, 0, sizeof(skb->cb)); 748 netif_rx_ni(skb); 749 } 750 751 static int sta_apply_parameters(struct ieee80211_local *local, 752 struct sta_info *sta, 753 struct station_parameters *params) 754 { 755 int ret = 0; 756 u32 rates; 757 int i, j; 758 struct ieee80211_supported_band *sband; 759 struct ieee80211_sub_if_data *sdata = sta->sdata; 760 u32 mask, set; 761 762 sband = local->hw.wiphy->bands[local->oper_channel->band]; 763 764 mask = params->sta_flags_mask; 765 set = params->sta_flags_set; 766 767 /* 768 * In mesh mode, we can clear AUTHENTICATED flag but must 769 * also make ASSOCIATED follow appropriately for the driver 770 * API. See also below, after AUTHORIZED changes. 771 */ 772 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) { 773 /* cfg80211 should not allow this in non-mesh modes */ 774 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif))) 775 return -EINVAL; 776 777 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 778 !test_sta_flag(sta, WLAN_STA_AUTH)) { 779 ret = sta_info_move_state_checked(sta, 780 IEEE80211_STA_AUTH); 781 if (ret) 782 return ret; 783 ret = sta_info_move_state_checked(sta, 784 IEEE80211_STA_ASSOC); 785 if (ret) 786 return ret; 787 } 788 } 789 790 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 791 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 792 ret = sta_info_move_state_checked(sta, 793 IEEE80211_STA_AUTHORIZED); 794 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 795 ret = sta_info_move_state_checked(sta, 796 IEEE80211_STA_ASSOC); 797 if (ret) 798 return ret; 799 } 800 801 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) { 802 /* cfg80211 should not allow this in non-mesh modes */ 803 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif))) 804 return -EINVAL; 805 806 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 807 test_sta_flag(sta, WLAN_STA_AUTH)) { 808 ret = sta_info_move_state_checked(sta, 809 IEEE80211_STA_AUTH); 810 if (ret) 811 return ret; 812 ret = sta_info_move_state_checked(sta, 813 IEEE80211_STA_NONE); 814 if (ret) 815 return ret; 816 } 817 } 818 819 820 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 821 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 822 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 823 else 824 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 825 } 826 827 if (mask & BIT(NL80211_STA_FLAG_WME)) { 828 if (set & BIT(NL80211_STA_FLAG_WME)) { 829 set_sta_flag(sta, WLAN_STA_WME); 830 sta->sta.wme = true; 831 } else { 832 clear_sta_flag(sta, WLAN_STA_WME); 833 sta->sta.wme = false; 834 } 835 } 836 837 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 838 if (set & BIT(NL80211_STA_FLAG_MFP)) 839 set_sta_flag(sta, WLAN_STA_MFP); 840 else 841 clear_sta_flag(sta, WLAN_STA_MFP); 842 } 843 844 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 845 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 846 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 847 else 848 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 849 } 850 851 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 852 sta->sta.uapsd_queues = params->uapsd_queues; 853 sta->sta.max_sp = params->max_sp; 854 } 855 856 /* 857 * cfg80211 validates this (1-2007) and allows setting the AID 858 * only when creating a new station entry 859 */ 860 if (params->aid) 861 sta->sta.aid = params->aid; 862 863 /* 864 * FIXME: updating the following information is racy when this 865 * function is called from ieee80211_change_station(). 866 * However, all this information should be static so 867 * maybe we should just reject attemps to change it. 868 */ 869 870 if (params->listen_interval >= 0) 871 sta->listen_interval = params->listen_interval; 872 873 if (params->supported_rates) { 874 rates = 0; 875 876 for (i = 0; i < params->supported_rates_len; i++) { 877 int rate = (params->supported_rates[i] & 0x7f) * 5; 878 for (j = 0; j < sband->n_bitrates; j++) { 879 if (sband->bitrates[j].bitrate == rate) 880 rates |= BIT(j); 881 } 882 } 883 sta->sta.supp_rates[local->oper_channel->band] = rates; 884 } 885 886 if (params->ht_capa) 887 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 888 params->ht_capa, 889 &sta->sta.ht_cap); 890 891 if (ieee80211_vif_is_mesh(&sdata->vif)) { 892 #ifdef CONFIG_MAC80211_MESH 893 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED) 894 switch (params->plink_state) { 895 case NL80211_PLINK_LISTEN: 896 case NL80211_PLINK_ESTAB: 897 case NL80211_PLINK_BLOCKED: 898 sta->plink_state = params->plink_state; 899 break; 900 default: 901 /* nothing */ 902 break; 903 } 904 else 905 switch (params->plink_action) { 906 case PLINK_ACTION_OPEN: 907 mesh_plink_open(sta); 908 break; 909 case PLINK_ACTION_BLOCK: 910 mesh_plink_block(sta); 911 break; 912 } 913 #endif 914 } 915 916 return 0; 917 } 918 919 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 920 u8 *mac, struct station_parameters *params) 921 { 922 struct ieee80211_local *local = wiphy_priv(wiphy); 923 struct sta_info *sta; 924 struct ieee80211_sub_if_data *sdata; 925 int err; 926 int layer2_update; 927 928 if (params->vlan) { 929 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 930 931 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 932 sdata->vif.type != NL80211_IFTYPE_AP) 933 return -EINVAL; 934 } else 935 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 936 937 if (compare_ether_addr(mac, sdata->vif.addr) == 0) 938 return -EINVAL; 939 940 if (is_multicast_ether_addr(mac)) 941 return -EINVAL; 942 943 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 944 if (!sta) 945 return -ENOMEM; 946 947 sta_info_move_state(sta, IEEE80211_STA_AUTH); 948 sta_info_move_state(sta, IEEE80211_STA_ASSOC); 949 950 err = sta_apply_parameters(local, sta, params); 951 if (err) { 952 sta_info_free(local, sta); 953 return err; 954 } 955 956 /* 957 * for TDLS, rate control should be initialized only when supported 958 * rates are known. 959 */ 960 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 961 rate_control_rate_init(sta); 962 963 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 964 sdata->vif.type == NL80211_IFTYPE_AP; 965 966 err = sta_info_insert_rcu(sta); 967 if (err) { 968 rcu_read_unlock(); 969 return err; 970 } 971 972 if (layer2_update) 973 ieee80211_send_layer2_update(sta); 974 975 rcu_read_unlock(); 976 977 return 0; 978 } 979 980 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 981 u8 *mac) 982 { 983 struct ieee80211_local *local = wiphy_priv(wiphy); 984 struct ieee80211_sub_if_data *sdata; 985 986 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 987 988 if (mac) 989 return sta_info_destroy_addr_bss(sdata, mac); 990 991 sta_info_flush(local, sdata); 992 return 0; 993 } 994 995 static int ieee80211_change_station(struct wiphy *wiphy, 996 struct net_device *dev, 997 u8 *mac, 998 struct station_parameters *params) 999 { 1000 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1001 struct ieee80211_local *local = wiphy_priv(wiphy); 1002 struct sta_info *sta; 1003 struct ieee80211_sub_if_data *vlansdata; 1004 1005 mutex_lock(&local->sta_mtx); 1006 1007 sta = sta_info_get_bss(sdata, mac); 1008 if (!sta) { 1009 mutex_unlock(&local->sta_mtx); 1010 return -ENOENT; 1011 } 1012 1013 /* in station mode, supported rates are only valid with TDLS */ 1014 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1015 params->supported_rates && 1016 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1017 mutex_unlock(&local->sta_mtx); 1018 return -EINVAL; 1019 } 1020 1021 if (params->vlan && params->vlan != sta->sdata->dev) { 1022 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1023 1024 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1025 vlansdata->vif.type != NL80211_IFTYPE_AP) { 1026 mutex_unlock(&local->sta_mtx); 1027 return -EINVAL; 1028 } 1029 1030 if (params->vlan->ieee80211_ptr->use_4addr) { 1031 if (vlansdata->u.vlan.sta) { 1032 mutex_unlock(&local->sta_mtx); 1033 return -EBUSY; 1034 } 1035 1036 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1037 } 1038 1039 sta->sdata = vlansdata; 1040 ieee80211_send_layer2_update(sta); 1041 } 1042 1043 sta_apply_parameters(local, sta, params); 1044 1045 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates) 1046 rate_control_rate_init(sta); 1047 1048 mutex_unlock(&local->sta_mtx); 1049 1050 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1051 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1052 ieee80211_recalc_ps(local, -1); 1053 1054 return 0; 1055 } 1056 1057 #ifdef CONFIG_MAC80211_MESH 1058 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1059 u8 *dst, u8 *next_hop) 1060 { 1061 struct ieee80211_sub_if_data *sdata; 1062 struct mesh_path *mpath; 1063 struct sta_info *sta; 1064 int err; 1065 1066 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1067 1068 rcu_read_lock(); 1069 sta = sta_info_get(sdata, next_hop); 1070 if (!sta) { 1071 rcu_read_unlock(); 1072 return -ENOENT; 1073 } 1074 1075 err = mesh_path_add(dst, sdata); 1076 if (err) { 1077 rcu_read_unlock(); 1078 return err; 1079 } 1080 1081 mpath = mesh_path_lookup(dst, sdata); 1082 if (!mpath) { 1083 rcu_read_unlock(); 1084 return -ENXIO; 1085 } 1086 mesh_path_fix_nexthop(mpath, sta); 1087 1088 rcu_read_unlock(); 1089 return 0; 1090 } 1091 1092 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1093 u8 *dst) 1094 { 1095 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1096 1097 if (dst) 1098 return mesh_path_del(dst, sdata); 1099 1100 mesh_path_flush_by_iface(sdata); 1101 return 0; 1102 } 1103 1104 static int ieee80211_change_mpath(struct wiphy *wiphy, 1105 struct net_device *dev, 1106 u8 *dst, u8 *next_hop) 1107 { 1108 struct ieee80211_sub_if_data *sdata; 1109 struct mesh_path *mpath; 1110 struct sta_info *sta; 1111 1112 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1113 1114 rcu_read_lock(); 1115 1116 sta = sta_info_get(sdata, next_hop); 1117 if (!sta) { 1118 rcu_read_unlock(); 1119 return -ENOENT; 1120 } 1121 1122 mpath = mesh_path_lookup(dst, sdata); 1123 if (!mpath) { 1124 rcu_read_unlock(); 1125 return -ENOENT; 1126 } 1127 1128 mesh_path_fix_nexthop(mpath, sta); 1129 1130 rcu_read_unlock(); 1131 return 0; 1132 } 1133 1134 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1135 struct mpath_info *pinfo) 1136 { 1137 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1138 1139 if (next_hop_sta) 1140 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1141 else 1142 memset(next_hop, 0, ETH_ALEN); 1143 1144 pinfo->generation = mesh_paths_generation; 1145 1146 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1147 MPATH_INFO_SN | 1148 MPATH_INFO_METRIC | 1149 MPATH_INFO_EXPTIME | 1150 MPATH_INFO_DISCOVERY_TIMEOUT | 1151 MPATH_INFO_DISCOVERY_RETRIES | 1152 MPATH_INFO_FLAGS; 1153 1154 pinfo->frame_qlen = mpath->frame_queue.qlen; 1155 pinfo->sn = mpath->sn; 1156 pinfo->metric = mpath->metric; 1157 if (time_before(jiffies, mpath->exp_time)) 1158 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1159 pinfo->discovery_timeout = 1160 jiffies_to_msecs(mpath->discovery_timeout); 1161 pinfo->discovery_retries = mpath->discovery_retries; 1162 pinfo->flags = 0; 1163 if (mpath->flags & MESH_PATH_ACTIVE) 1164 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1165 if (mpath->flags & MESH_PATH_RESOLVING) 1166 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1167 if (mpath->flags & MESH_PATH_SN_VALID) 1168 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1169 if (mpath->flags & MESH_PATH_FIXED) 1170 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1171 if (mpath->flags & MESH_PATH_RESOLVING) 1172 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1173 1174 pinfo->flags = mpath->flags; 1175 } 1176 1177 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1178 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1179 1180 { 1181 struct ieee80211_sub_if_data *sdata; 1182 struct mesh_path *mpath; 1183 1184 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1185 1186 rcu_read_lock(); 1187 mpath = mesh_path_lookup(dst, sdata); 1188 if (!mpath) { 1189 rcu_read_unlock(); 1190 return -ENOENT; 1191 } 1192 memcpy(dst, mpath->dst, ETH_ALEN); 1193 mpath_set_pinfo(mpath, next_hop, pinfo); 1194 rcu_read_unlock(); 1195 return 0; 1196 } 1197 1198 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1199 int idx, u8 *dst, u8 *next_hop, 1200 struct mpath_info *pinfo) 1201 { 1202 struct ieee80211_sub_if_data *sdata; 1203 struct mesh_path *mpath; 1204 1205 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1206 1207 rcu_read_lock(); 1208 mpath = mesh_path_lookup_by_idx(idx, sdata); 1209 if (!mpath) { 1210 rcu_read_unlock(); 1211 return -ENOENT; 1212 } 1213 memcpy(dst, mpath->dst, ETH_ALEN); 1214 mpath_set_pinfo(mpath, next_hop, pinfo); 1215 rcu_read_unlock(); 1216 return 0; 1217 } 1218 1219 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1220 struct net_device *dev, 1221 struct mesh_config *conf) 1222 { 1223 struct ieee80211_sub_if_data *sdata; 1224 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1225 1226 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1227 return 0; 1228 } 1229 1230 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1231 { 1232 return (mask >> (parm-1)) & 0x1; 1233 } 1234 1235 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1236 const struct mesh_setup *setup) 1237 { 1238 u8 *new_ie; 1239 const u8 *old_ie; 1240 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1241 struct ieee80211_sub_if_data, u.mesh); 1242 1243 /* allocate information elements */ 1244 new_ie = NULL; 1245 old_ie = ifmsh->ie; 1246 1247 if (setup->ie_len) { 1248 new_ie = kmemdup(setup->ie, setup->ie_len, 1249 GFP_KERNEL); 1250 if (!new_ie) 1251 return -ENOMEM; 1252 } 1253 ifmsh->ie_len = setup->ie_len; 1254 ifmsh->ie = new_ie; 1255 kfree(old_ie); 1256 1257 /* now copy the rest of the setup parameters */ 1258 ifmsh->mesh_id_len = setup->mesh_id_len; 1259 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1260 ifmsh->mesh_pp_id = setup->path_sel_proto; 1261 ifmsh->mesh_pm_id = setup->path_metric; 1262 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1263 if (setup->is_authenticated) 1264 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1265 if (setup->is_secure) 1266 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1267 1268 /* mcast rate setting in Mesh Node */ 1269 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1270 sizeof(setup->mcast_rate)); 1271 1272 return 0; 1273 } 1274 1275 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1276 struct net_device *dev, u32 mask, 1277 const struct mesh_config *nconf) 1278 { 1279 struct mesh_config *conf; 1280 struct ieee80211_sub_if_data *sdata; 1281 struct ieee80211_if_mesh *ifmsh; 1282 1283 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1284 ifmsh = &sdata->u.mesh; 1285 1286 /* Set the config options which we are interested in setting */ 1287 conf = &(sdata->u.mesh.mshcfg); 1288 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1289 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1290 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1291 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1292 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1293 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1294 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1295 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1296 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1297 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1298 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1299 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1300 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1301 conf->dot11MeshTTL = nconf->element_ttl; 1302 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) 1303 conf->auto_open_plinks = nconf->auto_open_plinks; 1304 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1305 conf->dot11MeshHWMPmaxPREQretries = 1306 nconf->dot11MeshHWMPmaxPREQretries; 1307 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1308 conf->path_refresh_time = nconf->path_refresh_time; 1309 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1310 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1311 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1312 conf->dot11MeshHWMPactivePathTimeout = 1313 nconf->dot11MeshHWMPactivePathTimeout; 1314 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1315 conf->dot11MeshHWMPpreqMinInterval = 1316 nconf->dot11MeshHWMPpreqMinInterval; 1317 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1318 conf->dot11MeshHWMPperrMinInterval = 1319 nconf->dot11MeshHWMPperrMinInterval; 1320 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1321 mask)) 1322 conf->dot11MeshHWMPnetDiameterTraversalTime = 1323 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1324 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1325 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1326 ieee80211_mesh_root_setup(ifmsh); 1327 } 1328 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1329 /* our current gate announcement implementation rides on root 1330 * announcements, so require this ifmsh to also be a root node 1331 * */ 1332 if (nconf->dot11MeshGateAnnouncementProtocol && 1333 !conf->dot11MeshHWMPRootMode) { 1334 conf->dot11MeshHWMPRootMode = 1; 1335 ieee80211_mesh_root_setup(ifmsh); 1336 } 1337 conf->dot11MeshGateAnnouncementProtocol = 1338 nconf->dot11MeshGateAnnouncementProtocol; 1339 } 1340 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) { 1341 conf->dot11MeshHWMPRannInterval = 1342 nconf->dot11MeshHWMPRannInterval; 1343 } 1344 return 0; 1345 } 1346 1347 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1348 const struct mesh_config *conf, 1349 const struct mesh_setup *setup) 1350 { 1351 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1352 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1353 int err; 1354 1355 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1356 err = copy_mesh_setup(ifmsh, setup); 1357 if (err) 1358 return err; 1359 ieee80211_start_mesh(sdata); 1360 1361 return 0; 1362 } 1363 1364 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1365 { 1366 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1367 1368 ieee80211_stop_mesh(sdata); 1369 1370 return 0; 1371 } 1372 #endif 1373 1374 static int ieee80211_change_bss(struct wiphy *wiphy, 1375 struct net_device *dev, 1376 struct bss_parameters *params) 1377 { 1378 struct ieee80211_sub_if_data *sdata; 1379 u32 changed = 0; 1380 1381 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1382 1383 if (params->use_cts_prot >= 0) { 1384 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1385 changed |= BSS_CHANGED_ERP_CTS_PROT; 1386 } 1387 if (params->use_short_preamble >= 0) { 1388 sdata->vif.bss_conf.use_short_preamble = 1389 params->use_short_preamble; 1390 changed |= BSS_CHANGED_ERP_PREAMBLE; 1391 } 1392 1393 if (!sdata->vif.bss_conf.use_short_slot && 1394 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) { 1395 sdata->vif.bss_conf.use_short_slot = true; 1396 changed |= BSS_CHANGED_ERP_SLOT; 1397 } 1398 1399 if (params->use_short_slot_time >= 0) { 1400 sdata->vif.bss_conf.use_short_slot = 1401 params->use_short_slot_time; 1402 changed |= BSS_CHANGED_ERP_SLOT; 1403 } 1404 1405 if (params->basic_rates) { 1406 int i, j; 1407 u32 rates = 0; 1408 struct ieee80211_local *local = wiphy_priv(wiphy); 1409 struct ieee80211_supported_band *sband = 1410 wiphy->bands[local->oper_channel->band]; 1411 1412 for (i = 0; i < params->basic_rates_len; i++) { 1413 int rate = (params->basic_rates[i] & 0x7f) * 5; 1414 for (j = 0; j < sband->n_bitrates; j++) { 1415 if (sband->bitrates[j].bitrate == rate) 1416 rates |= BIT(j); 1417 } 1418 } 1419 sdata->vif.bss_conf.basic_rates = rates; 1420 changed |= BSS_CHANGED_BASIC_RATES; 1421 } 1422 1423 if (params->ap_isolate >= 0) { 1424 if (params->ap_isolate) 1425 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1426 else 1427 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1428 } 1429 1430 if (params->ht_opmode >= 0) { 1431 sdata->vif.bss_conf.ht_operation_mode = 1432 (u16) params->ht_opmode; 1433 changed |= BSS_CHANGED_HT; 1434 } 1435 1436 ieee80211_bss_info_change_notify(sdata, changed); 1437 1438 return 0; 1439 } 1440 1441 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1442 struct net_device *dev, 1443 struct ieee80211_txq_params *params) 1444 { 1445 struct ieee80211_local *local = wiphy_priv(wiphy); 1446 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1447 struct ieee80211_tx_queue_params p; 1448 1449 if (!local->ops->conf_tx) 1450 return -EOPNOTSUPP; 1451 1452 memset(&p, 0, sizeof(p)); 1453 p.aifs = params->aifs; 1454 p.cw_max = params->cwmax; 1455 p.cw_min = params->cwmin; 1456 p.txop = params->txop; 1457 1458 /* 1459 * Setting tx queue params disables u-apsd because it's only 1460 * called in master mode. 1461 */ 1462 p.uapsd = false; 1463 1464 if (params->queue >= local->hw.queues) 1465 return -EINVAL; 1466 1467 sdata->tx_conf[params->queue] = p; 1468 if (drv_conf_tx(local, sdata, params->queue, &p)) { 1469 wiphy_debug(local->hw.wiphy, 1470 "failed to set TX queue parameters for queue %d\n", 1471 params->queue); 1472 return -EINVAL; 1473 } 1474 1475 return 0; 1476 } 1477 1478 static int ieee80211_set_channel(struct wiphy *wiphy, 1479 struct net_device *netdev, 1480 struct ieee80211_channel *chan, 1481 enum nl80211_channel_type channel_type) 1482 { 1483 struct ieee80211_local *local = wiphy_priv(wiphy); 1484 struct ieee80211_sub_if_data *sdata = NULL; 1485 struct ieee80211_channel *old_oper; 1486 enum nl80211_channel_type old_oper_type; 1487 enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT; 1488 1489 if (netdev) 1490 sdata = IEEE80211_DEV_TO_SUB_IF(netdev); 1491 1492 switch (ieee80211_get_channel_mode(local, NULL)) { 1493 case CHAN_MODE_HOPPING: 1494 return -EBUSY; 1495 case CHAN_MODE_FIXED: 1496 if (local->oper_channel != chan) 1497 return -EBUSY; 1498 if (!sdata && local->_oper_channel_type == channel_type) 1499 return 0; 1500 break; 1501 case CHAN_MODE_UNDEFINED: 1502 break; 1503 } 1504 1505 if (sdata) 1506 old_vif_oper_type = sdata->vif.bss_conf.channel_type; 1507 old_oper_type = local->_oper_channel_type; 1508 1509 if (!ieee80211_set_channel_type(local, sdata, channel_type)) 1510 return -EBUSY; 1511 1512 old_oper = local->oper_channel; 1513 local->oper_channel = chan; 1514 1515 /* Update driver if changes were actually made. */ 1516 if ((old_oper != local->oper_channel) || 1517 (old_oper_type != local->_oper_channel_type)) 1518 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); 1519 1520 if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR && 1521 old_vif_oper_type != sdata->vif.bss_conf.channel_type) 1522 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1523 1524 return 0; 1525 } 1526 1527 #ifdef CONFIG_PM 1528 static int ieee80211_suspend(struct wiphy *wiphy, 1529 struct cfg80211_wowlan *wowlan) 1530 { 1531 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1532 } 1533 1534 static int ieee80211_resume(struct wiphy *wiphy) 1535 { 1536 return __ieee80211_resume(wiphy_priv(wiphy)); 1537 } 1538 #else 1539 #define ieee80211_suspend NULL 1540 #define ieee80211_resume NULL 1541 #endif 1542 1543 static int ieee80211_scan(struct wiphy *wiphy, 1544 struct net_device *dev, 1545 struct cfg80211_scan_request *req) 1546 { 1547 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1548 1549 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1550 case NL80211_IFTYPE_STATION: 1551 case NL80211_IFTYPE_ADHOC: 1552 case NL80211_IFTYPE_MESH_POINT: 1553 case NL80211_IFTYPE_P2P_CLIENT: 1554 break; 1555 case NL80211_IFTYPE_P2P_GO: 1556 if (sdata->local->ops->hw_scan) 1557 break; 1558 /* 1559 * FIXME: implement NoA while scanning in software, 1560 * for now fall through to allow scanning only when 1561 * beaconing hasn't been configured yet 1562 */ 1563 case NL80211_IFTYPE_AP: 1564 if (sdata->u.ap.beacon) 1565 return -EOPNOTSUPP; 1566 break; 1567 default: 1568 return -EOPNOTSUPP; 1569 } 1570 1571 return ieee80211_request_scan(sdata, req); 1572 } 1573 1574 static int 1575 ieee80211_sched_scan_start(struct wiphy *wiphy, 1576 struct net_device *dev, 1577 struct cfg80211_sched_scan_request *req) 1578 { 1579 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1580 1581 if (!sdata->local->ops->sched_scan_start) 1582 return -EOPNOTSUPP; 1583 1584 return ieee80211_request_sched_scan_start(sdata, req); 1585 } 1586 1587 static int 1588 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 1589 { 1590 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1591 1592 if (!sdata->local->ops->sched_scan_stop) 1593 return -EOPNOTSUPP; 1594 1595 return ieee80211_request_sched_scan_stop(sdata); 1596 } 1597 1598 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 1599 struct cfg80211_auth_request *req) 1600 { 1601 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 1602 } 1603 1604 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 1605 struct cfg80211_assoc_request *req) 1606 { 1607 struct ieee80211_local *local = wiphy_priv(wiphy); 1608 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1609 1610 switch (ieee80211_get_channel_mode(local, sdata)) { 1611 case CHAN_MODE_HOPPING: 1612 return -EBUSY; 1613 case CHAN_MODE_FIXED: 1614 if (local->oper_channel == req->bss->channel) 1615 break; 1616 return -EBUSY; 1617 case CHAN_MODE_UNDEFINED: 1618 break; 1619 } 1620 1621 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 1622 } 1623 1624 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 1625 struct cfg80211_deauth_request *req, 1626 void *cookie) 1627 { 1628 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), 1629 req, cookie); 1630 } 1631 1632 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 1633 struct cfg80211_disassoc_request *req, 1634 void *cookie) 1635 { 1636 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), 1637 req, cookie); 1638 } 1639 1640 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 1641 struct cfg80211_ibss_params *params) 1642 { 1643 struct ieee80211_local *local = wiphy_priv(wiphy); 1644 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1645 1646 switch (ieee80211_get_channel_mode(local, sdata)) { 1647 case CHAN_MODE_HOPPING: 1648 return -EBUSY; 1649 case CHAN_MODE_FIXED: 1650 if (!params->channel_fixed) 1651 return -EBUSY; 1652 if (local->oper_channel == params->channel) 1653 break; 1654 return -EBUSY; 1655 case CHAN_MODE_UNDEFINED: 1656 break; 1657 } 1658 1659 return ieee80211_ibss_join(sdata, params); 1660 } 1661 1662 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 1663 { 1664 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1665 1666 return ieee80211_ibss_leave(sdata); 1667 } 1668 1669 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 1670 { 1671 struct ieee80211_local *local = wiphy_priv(wiphy); 1672 int err; 1673 1674 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 1675 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 1676 1677 if (err) 1678 return err; 1679 } 1680 1681 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 1682 err = drv_set_coverage_class(local, wiphy->coverage_class); 1683 1684 if (err) 1685 return err; 1686 } 1687 1688 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 1689 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 1690 1691 if (err) 1692 return err; 1693 } 1694 1695 if (changed & WIPHY_PARAM_RETRY_SHORT) 1696 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 1697 if (changed & WIPHY_PARAM_RETRY_LONG) 1698 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 1699 if (changed & 1700 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 1701 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 1702 1703 return 0; 1704 } 1705 1706 static int ieee80211_set_tx_power(struct wiphy *wiphy, 1707 enum nl80211_tx_power_setting type, int mbm) 1708 { 1709 struct ieee80211_local *local = wiphy_priv(wiphy); 1710 struct ieee80211_channel *chan = local->hw.conf.channel; 1711 u32 changes = 0; 1712 1713 switch (type) { 1714 case NL80211_TX_POWER_AUTOMATIC: 1715 local->user_power_level = -1; 1716 break; 1717 case NL80211_TX_POWER_LIMITED: 1718 if (mbm < 0 || (mbm % 100)) 1719 return -EOPNOTSUPP; 1720 local->user_power_level = MBM_TO_DBM(mbm); 1721 break; 1722 case NL80211_TX_POWER_FIXED: 1723 if (mbm < 0 || (mbm % 100)) 1724 return -EOPNOTSUPP; 1725 /* TODO: move to cfg80211 when it knows the channel */ 1726 if (MBM_TO_DBM(mbm) > chan->max_power) 1727 return -EINVAL; 1728 local->user_power_level = MBM_TO_DBM(mbm); 1729 break; 1730 } 1731 1732 ieee80211_hw_config(local, changes); 1733 1734 return 0; 1735 } 1736 1737 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm) 1738 { 1739 struct ieee80211_local *local = wiphy_priv(wiphy); 1740 1741 *dbm = local->hw.conf.power_level; 1742 1743 return 0; 1744 } 1745 1746 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 1747 const u8 *addr) 1748 { 1749 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1750 1751 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 1752 1753 return 0; 1754 } 1755 1756 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 1757 { 1758 struct ieee80211_local *local = wiphy_priv(wiphy); 1759 1760 drv_rfkill_poll(local); 1761 } 1762 1763 #ifdef CONFIG_NL80211_TESTMODE 1764 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len) 1765 { 1766 struct ieee80211_local *local = wiphy_priv(wiphy); 1767 1768 if (!local->ops->testmode_cmd) 1769 return -EOPNOTSUPP; 1770 1771 return local->ops->testmode_cmd(&local->hw, data, len); 1772 } 1773 1774 static int ieee80211_testmode_dump(struct wiphy *wiphy, 1775 struct sk_buff *skb, 1776 struct netlink_callback *cb, 1777 void *data, int len) 1778 { 1779 struct ieee80211_local *local = wiphy_priv(wiphy); 1780 1781 if (!local->ops->testmode_dump) 1782 return -EOPNOTSUPP; 1783 1784 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 1785 } 1786 #endif 1787 1788 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1789 enum ieee80211_smps_mode smps_mode) 1790 { 1791 const u8 *ap; 1792 enum ieee80211_smps_mode old_req; 1793 int err; 1794 1795 lockdep_assert_held(&sdata->u.mgd.mtx); 1796 1797 old_req = sdata->u.mgd.req_smps; 1798 sdata->u.mgd.req_smps = smps_mode; 1799 1800 if (old_req == smps_mode && 1801 smps_mode != IEEE80211_SMPS_AUTOMATIC) 1802 return 0; 1803 1804 /* 1805 * If not associated, or current association is not an HT 1806 * association, there's no need to send an action frame. 1807 */ 1808 if (!sdata->u.mgd.associated || 1809 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) { 1810 mutex_lock(&sdata->local->iflist_mtx); 1811 ieee80211_recalc_smps(sdata->local); 1812 mutex_unlock(&sdata->local->iflist_mtx); 1813 return 0; 1814 } 1815 1816 ap = sdata->u.mgd.associated->bssid; 1817 1818 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 1819 if (sdata->u.mgd.powersave) 1820 smps_mode = IEEE80211_SMPS_DYNAMIC; 1821 else 1822 smps_mode = IEEE80211_SMPS_OFF; 1823 } 1824 1825 /* send SM PS frame to AP */ 1826 err = ieee80211_send_smps_action(sdata, smps_mode, 1827 ap, ap); 1828 if (err) 1829 sdata->u.mgd.req_smps = old_req; 1830 1831 return err; 1832 } 1833 1834 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 1835 bool enabled, int timeout) 1836 { 1837 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1838 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 1839 1840 if (sdata->vif.type != NL80211_IFTYPE_STATION) 1841 return -EOPNOTSUPP; 1842 1843 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 1844 return -EOPNOTSUPP; 1845 1846 if (enabled == sdata->u.mgd.powersave && 1847 timeout == local->dynamic_ps_forced_timeout) 1848 return 0; 1849 1850 sdata->u.mgd.powersave = enabled; 1851 local->dynamic_ps_forced_timeout = timeout; 1852 1853 /* no change, but if automatic follow powersave */ 1854 mutex_lock(&sdata->u.mgd.mtx); 1855 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps); 1856 mutex_unlock(&sdata->u.mgd.mtx); 1857 1858 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 1859 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 1860 1861 ieee80211_recalc_ps(local, -1); 1862 1863 return 0; 1864 } 1865 1866 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 1867 struct net_device *dev, 1868 s32 rssi_thold, u32 rssi_hyst) 1869 { 1870 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1871 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 1872 struct ieee80211_vif *vif = &sdata->vif; 1873 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 1874 1875 if (rssi_thold == bss_conf->cqm_rssi_thold && 1876 rssi_hyst == bss_conf->cqm_rssi_hyst) 1877 return 0; 1878 1879 bss_conf->cqm_rssi_thold = rssi_thold; 1880 bss_conf->cqm_rssi_hyst = rssi_hyst; 1881 1882 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) { 1883 if (sdata->vif.type != NL80211_IFTYPE_STATION) 1884 return -EOPNOTSUPP; 1885 return 0; 1886 } 1887 1888 /* tell the driver upon association, unless already associated */ 1889 if (sdata->u.mgd.associated) 1890 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 1891 1892 return 0; 1893 } 1894 1895 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 1896 struct net_device *dev, 1897 const u8 *addr, 1898 const struct cfg80211_bitrate_mask *mask) 1899 { 1900 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1901 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 1902 int i, ret; 1903 1904 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 1905 ret = drv_set_bitrate_mask(local, sdata, mask); 1906 if (ret) 1907 return ret; 1908 } 1909 1910 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 1911 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 1912 1913 return 0; 1914 } 1915 1916 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local, 1917 struct net_device *dev, 1918 struct ieee80211_channel *chan, 1919 enum nl80211_channel_type chantype, 1920 unsigned int duration, u64 *cookie) 1921 { 1922 int ret; 1923 u32 random_cookie; 1924 1925 lockdep_assert_held(&local->mtx); 1926 1927 if (local->hw_roc_cookie) 1928 return -EBUSY; 1929 /* must be nonzero */ 1930 random_cookie = random32() | 1; 1931 1932 *cookie = random_cookie; 1933 local->hw_roc_dev = dev; 1934 local->hw_roc_cookie = random_cookie; 1935 local->hw_roc_channel = chan; 1936 local->hw_roc_channel_type = chantype; 1937 local->hw_roc_duration = duration; 1938 ret = drv_remain_on_channel(local, chan, chantype, duration); 1939 if (ret) { 1940 local->hw_roc_channel = NULL; 1941 local->hw_roc_cookie = 0; 1942 } 1943 1944 return ret; 1945 } 1946 1947 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 1948 struct net_device *dev, 1949 struct ieee80211_channel *chan, 1950 enum nl80211_channel_type channel_type, 1951 unsigned int duration, 1952 u64 *cookie) 1953 { 1954 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1955 struct ieee80211_local *local = sdata->local; 1956 1957 if (local->ops->remain_on_channel) { 1958 int ret; 1959 1960 mutex_lock(&local->mtx); 1961 ret = ieee80211_remain_on_channel_hw(local, dev, 1962 chan, channel_type, 1963 duration, cookie); 1964 local->hw_roc_for_tx = false; 1965 mutex_unlock(&local->mtx); 1966 1967 return ret; 1968 } 1969 1970 return ieee80211_wk_remain_on_channel(sdata, chan, channel_type, 1971 duration, cookie); 1972 } 1973 1974 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local, 1975 u64 cookie) 1976 { 1977 int ret; 1978 1979 lockdep_assert_held(&local->mtx); 1980 1981 if (local->hw_roc_cookie != cookie) 1982 return -ENOENT; 1983 1984 ret = drv_cancel_remain_on_channel(local); 1985 if (ret) 1986 return ret; 1987 1988 local->hw_roc_cookie = 0; 1989 local->hw_roc_channel = NULL; 1990 1991 ieee80211_recalc_idle(local); 1992 1993 return 0; 1994 } 1995 1996 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1997 struct net_device *dev, 1998 u64 cookie) 1999 { 2000 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2001 struct ieee80211_local *local = sdata->local; 2002 2003 if (local->ops->cancel_remain_on_channel) { 2004 int ret; 2005 2006 mutex_lock(&local->mtx); 2007 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie); 2008 mutex_unlock(&local->mtx); 2009 2010 return ret; 2011 } 2012 2013 return ieee80211_wk_cancel_remain_on_channel(sdata, cookie); 2014 } 2015 2016 static enum work_done_result 2017 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb) 2018 { 2019 /* 2020 * Use the data embedded in the work struct for reporting 2021 * here so if the driver mangled the SKB before dropping 2022 * it (which is the only way we really should get here) 2023 * then we don't report mangled data. 2024 * 2025 * If there was no wait time, then by the time we get here 2026 * the driver will likely not have reported the status yet, 2027 * so in that case userspace will have to deal with it. 2028 */ 2029 2030 if (wk->offchan_tx.wait && !wk->offchan_tx.status) 2031 cfg80211_mgmt_tx_status(wk->sdata->dev, 2032 (unsigned long) wk->offchan_tx.frame, 2033 wk->ie, wk->ie_len, false, GFP_KERNEL); 2034 2035 return WORK_DONE_DESTROY; 2036 } 2037 2038 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev, 2039 struct ieee80211_channel *chan, bool offchan, 2040 enum nl80211_channel_type channel_type, 2041 bool channel_type_valid, unsigned int wait, 2042 const u8 *buf, size_t len, bool no_cck, 2043 bool dont_wait_for_ack, u64 *cookie) 2044 { 2045 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2046 struct ieee80211_local *local = sdata->local; 2047 struct sk_buff *skb; 2048 struct sta_info *sta; 2049 struct ieee80211_work *wk; 2050 const struct ieee80211_mgmt *mgmt = (void *)buf; 2051 u32 flags; 2052 bool is_offchan = false; 2053 2054 if (dont_wait_for_ack) 2055 flags = IEEE80211_TX_CTL_NO_ACK; 2056 else 2057 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 2058 IEEE80211_TX_CTL_REQ_TX_STATUS; 2059 2060 /* Check that we are on the requested channel for transmission */ 2061 if (chan != local->tmp_channel && 2062 chan != local->oper_channel) 2063 is_offchan = true; 2064 if (channel_type_valid && 2065 (channel_type != local->tmp_channel_type && 2066 channel_type != local->_oper_channel_type)) 2067 is_offchan = true; 2068 2069 if (chan == local->hw_roc_channel) { 2070 /* TODO: check channel type? */ 2071 is_offchan = false; 2072 flags |= IEEE80211_TX_CTL_TX_OFFCHAN; 2073 } 2074 2075 if (no_cck) 2076 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 2077 2078 if (is_offchan && !offchan) 2079 return -EBUSY; 2080 2081 switch (sdata->vif.type) { 2082 case NL80211_IFTYPE_ADHOC: 2083 case NL80211_IFTYPE_AP: 2084 case NL80211_IFTYPE_AP_VLAN: 2085 case NL80211_IFTYPE_P2P_GO: 2086 case NL80211_IFTYPE_MESH_POINT: 2087 if (!ieee80211_is_action(mgmt->frame_control) || 2088 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) 2089 break; 2090 rcu_read_lock(); 2091 sta = sta_info_get(sdata, mgmt->da); 2092 rcu_read_unlock(); 2093 if (!sta) 2094 return -ENOLINK; 2095 break; 2096 case NL80211_IFTYPE_STATION: 2097 case NL80211_IFTYPE_P2P_CLIENT: 2098 break; 2099 default: 2100 return -EOPNOTSUPP; 2101 } 2102 2103 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); 2104 if (!skb) 2105 return -ENOMEM; 2106 skb_reserve(skb, local->hw.extra_tx_headroom); 2107 2108 memcpy(skb_put(skb, len), buf, len); 2109 2110 IEEE80211_SKB_CB(skb)->flags = flags; 2111 2112 skb->dev = sdata->dev; 2113 2114 *cookie = (unsigned long) skb; 2115 2116 if (is_offchan && local->ops->remain_on_channel) { 2117 unsigned int duration; 2118 int ret; 2119 2120 mutex_lock(&local->mtx); 2121 /* 2122 * If the duration is zero, then the driver 2123 * wouldn't actually do anything. Set it to 2124 * 100 for now. 2125 * 2126 * TODO: cancel the off-channel operation 2127 * when we get the SKB's TX status and 2128 * the wait time was zero before. 2129 */ 2130 duration = 100; 2131 if (wait) 2132 duration = wait; 2133 ret = ieee80211_remain_on_channel_hw(local, dev, chan, 2134 channel_type, 2135 duration, cookie); 2136 if (ret) { 2137 kfree_skb(skb); 2138 mutex_unlock(&local->mtx); 2139 return ret; 2140 } 2141 2142 local->hw_roc_for_tx = true; 2143 local->hw_roc_duration = wait; 2144 2145 /* 2146 * queue up frame for transmission after 2147 * ieee80211_ready_on_channel call 2148 */ 2149 2150 /* modify cookie to prevent API mismatches */ 2151 *cookie ^= 2; 2152 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN; 2153 local->hw_roc_skb = skb; 2154 local->hw_roc_skb_for_status = skb; 2155 mutex_unlock(&local->mtx); 2156 2157 return 0; 2158 } 2159 2160 /* 2161 * Can transmit right away if the channel was the 2162 * right one and there's no wait involved... If a 2163 * wait is involved, we might otherwise not be on 2164 * the right channel for long enough! 2165 */ 2166 if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) { 2167 ieee80211_tx_skb(sdata, skb); 2168 return 0; 2169 } 2170 2171 wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL); 2172 if (!wk) { 2173 kfree_skb(skb); 2174 return -ENOMEM; 2175 } 2176 2177 wk->type = IEEE80211_WORK_OFFCHANNEL_TX; 2178 wk->chan = chan; 2179 wk->chan_type = channel_type; 2180 wk->sdata = sdata; 2181 wk->done = ieee80211_offchan_tx_done; 2182 wk->offchan_tx.frame = skb; 2183 wk->offchan_tx.wait = wait; 2184 wk->ie_len = len; 2185 memcpy(wk->ie, buf, len); 2186 2187 ieee80211_add_work(wk); 2188 return 0; 2189 } 2190 2191 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 2192 struct net_device *dev, 2193 u64 cookie) 2194 { 2195 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2196 struct ieee80211_local *local = sdata->local; 2197 struct ieee80211_work *wk; 2198 int ret = -ENOENT; 2199 2200 mutex_lock(&local->mtx); 2201 2202 if (local->ops->cancel_remain_on_channel) { 2203 cookie ^= 2; 2204 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie); 2205 2206 if (ret == 0) { 2207 kfree_skb(local->hw_roc_skb); 2208 local->hw_roc_skb = NULL; 2209 local->hw_roc_skb_for_status = NULL; 2210 } 2211 2212 mutex_unlock(&local->mtx); 2213 2214 return ret; 2215 } 2216 2217 list_for_each_entry(wk, &local->work_list, list) { 2218 if (wk->sdata != sdata) 2219 continue; 2220 2221 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX) 2222 continue; 2223 2224 if (cookie != (unsigned long) wk->offchan_tx.frame) 2225 continue; 2226 2227 wk->timeout = jiffies; 2228 2229 ieee80211_queue_work(&local->hw, &local->work_work); 2230 ret = 0; 2231 break; 2232 } 2233 mutex_unlock(&local->mtx); 2234 2235 return ret; 2236 } 2237 2238 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 2239 struct net_device *dev, 2240 u16 frame_type, bool reg) 2241 { 2242 struct ieee80211_local *local = wiphy_priv(wiphy); 2243 2244 if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ)) 2245 return; 2246 2247 if (reg) 2248 local->probe_req_reg++; 2249 else 2250 local->probe_req_reg--; 2251 2252 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 2253 } 2254 2255 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 2256 { 2257 struct ieee80211_local *local = wiphy_priv(wiphy); 2258 2259 if (local->started) 2260 return -EOPNOTSUPP; 2261 2262 return drv_set_antenna(local, tx_ant, rx_ant); 2263 } 2264 2265 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 2266 { 2267 struct ieee80211_local *local = wiphy_priv(wiphy); 2268 2269 return drv_get_antenna(local, tx_ant, rx_ant); 2270 } 2271 2272 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) 2273 { 2274 struct ieee80211_local *local = wiphy_priv(wiphy); 2275 2276 return drv_set_ringparam(local, tx, rx); 2277 } 2278 2279 static void ieee80211_get_ringparam(struct wiphy *wiphy, 2280 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 2281 { 2282 struct ieee80211_local *local = wiphy_priv(wiphy); 2283 2284 drv_get_ringparam(local, tx, tx_max, rx, rx_max); 2285 } 2286 2287 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 2288 struct net_device *dev, 2289 struct cfg80211_gtk_rekey_data *data) 2290 { 2291 struct ieee80211_local *local = wiphy_priv(wiphy); 2292 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2293 2294 if (!local->ops->set_rekey_data) 2295 return -EOPNOTSUPP; 2296 2297 drv_set_rekey_data(local, sdata, data); 2298 2299 return 0; 2300 } 2301 2302 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb) 2303 { 2304 u8 *pos = (void *)skb_put(skb, 7); 2305 2306 *pos++ = WLAN_EID_EXT_CAPABILITY; 2307 *pos++ = 5; /* len */ 2308 *pos++ = 0x0; 2309 *pos++ = 0x0; 2310 *pos++ = 0x0; 2311 *pos++ = 0x0; 2312 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED; 2313 } 2314 2315 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) 2316 { 2317 struct ieee80211_local *local = sdata->local; 2318 u16 capab; 2319 2320 capab = 0; 2321 if (local->oper_channel->band != IEEE80211_BAND_2GHZ) 2322 return capab; 2323 2324 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) 2325 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 2326 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) 2327 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 2328 2329 return capab; 2330 } 2331 2332 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr, 2333 u8 *peer, u8 *bssid) 2334 { 2335 struct ieee80211_tdls_lnkie *lnkid; 2336 2337 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); 2338 2339 lnkid->ie_type = WLAN_EID_LINK_ID; 2340 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2; 2341 2342 memcpy(lnkid->bssid, bssid, ETH_ALEN); 2343 memcpy(lnkid->init_sta, src_addr, ETH_ALEN); 2344 memcpy(lnkid->resp_sta, peer, ETH_ALEN); 2345 } 2346 2347 static int 2348 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 2349 u8 *peer, u8 action_code, u8 dialog_token, 2350 u16 status_code, struct sk_buff *skb) 2351 { 2352 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2353 struct ieee80211_tdls_data *tf; 2354 2355 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); 2356 2357 memcpy(tf->da, peer, ETH_ALEN); 2358 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN); 2359 tf->ether_type = cpu_to_be16(ETH_P_TDLS); 2360 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; 2361 2362 switch (action_code) { 2363 case WLAN_TDLS_SETUP_REQUEST: 2364 tf->category = WLAN_CATEGORY_TDLS; 2365 tf->action_code = WLAN_TDLS_SETUP_REQUEST; 2366 2367 skb_put(skb, sizeof(tf->u.setup_req)); 2368 tf->u.setup_req.dialog_token = dialog_token; 2369 tf->u.setup_req.capability = 2370 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 2371 2372 ieee80211_add_srates_ie(&sdata->vif, skb); 2373 ieee80211_add_ext_srates_ie(&sdata->vif, skb); 2374 ieee80211_tdls_add_ext_capab(skb); 2375 break; 2376 case WLAN_TDLS_SETUP_RESPONSE: 2377 tf->category = WLAN_CATEGORY_TDLS; 2378 tf->action_code = WLAN_TDLS_SETUP_RESPONSE; 2379 2380 skb_put(skb, sizeof(tf->u.setup_resp)); 2381 tf->u.setup_resp.status_code = cpu_to_le16(status_code); 2382 tf->u.setup_resp.dialog_token = dialog_token; 2383 tf->u.setup_resp.capability = 2384 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 2385 2386 ieee80211_add_srates_ie(&sdata->vif, skb); 2387 ieee80211_add_ext_srates_ie(&sdata->vif, skb); 2388 ieee80211_tdls_add_ext_capab(skb); 2389 break; 2390 case WLAN_TDLS_SETUP_CONFIRM: 2391 tf->category = WLAN_CATEGORY_TDLS; 2392 tf->action_code = WLAN_TDLS_SETUP_CONFIRM; 2393 2394 skb_put(skb, sizeof(tf->u.setup_cfm)); 2395 tf->u.setup_cfm.status_code = cpu_to_le16(status_code); 2396 tf->u.setup_cfm.dialog_token = dialog_token; 2397 break; 2398 case WLAN_TDLS_TEARDOWN: 2399 tf->category = WLAN_CATEGORY_TDLS; 2400 tf->action_code = WLAN_TDLS_TEARDOWN; 2401 2402 skb_put(skb, sizeof(tf->u.teardown)); 2403 tf->u.teardown.reason_code = cpu_to_le16(status_code); 2404 break; 2405 case WLAN_TDLS_DISCOVERY_REQUEST: 2406 tf->category = WLAN_CATEGORY_TDLS; 2407 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; 2408 2409 skb_put(skb, sizeof(tf->u.discover_req)); 2410 tf->u.discover_req.dialog_token = dialog_token; 2411 break; 2412 default: 2413 return -EINVAL; 2414 } 2415 2416 return 0; 2417 } 2418 2419 static int 2420 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, 2421 u8 *peer, u8 action_code, u8 dialog_token, 2422 u16 status_code, struct sk_buff *skb) 2423 { 2424 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2425 struct ieee80211_mgmt *mgmt; 2426 2427 mgmt = (void *)skb_put(skb, 24); 2428 memset(mgmt, 0, 24); 2429 memcpy(mgmt->da, peer, ETH_ALEN); 2430 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 2431 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); 2432 2433 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 2434 IEEE80211_STYPE_ACTION); 2435 2436 switch (action_code) { 2437 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 2438 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp)); 2439 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; 2440 mgmt->u.action.u.tdls_discover_resp.action_code = 2441 WLAN_PUB_ACTION_TDLS_DISCOVER_RES; 2442 mgmt->u.action.u.tdls_discover_resp.dialog_token = 2443 dialog_token; 2444 mgmt->u.action.u.tdls_discover_resp.capability = 2445 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 2446 2447 ieee80211_add_srates_ie(&sdata->vif, skb); 2448 ieee80211_add_ext_srates_ie(&sdata->vif, skb); 2449 ieee80211_tdls_add_ext_capab(skb); 2450 break; 2451 default: 2452 return -EINVAL; 2453 } 2454 2455 return 0; 2456 } 2457 2458 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2459 u8 *peer, u8 action_code, u8 dialog_token, 2460 u16 status_code, const u8 *extra_ies, 2461 size_t extra_ies_len) 2462 { 2463 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2464 struct ieee80211_local *local = sdata->local; 2465 struct ieee80211_tx_info *info; 2466 struct sk_buff *skb = NULL; 2467 bool send_direct; 2468 int ret; 2469 2470 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 2471 return -ENOTSUPP; 2472 2473 /* make sure we are in managed mode, and associated */ 2474 if (sdata->vif.type != NL80211_IFTYPE_STATION || 2475 !sdata->u.mgd.associated) 2476 return -EINVAL; 2477 2478 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG 2479 printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer); 2480 #endif 2481 2482 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 2483 max(sizeof(struct ieee80211_mgmt), 2484 sizeof(struct ieee80211_tdls_data)) + 2485 50 + /* supported rates */ 2486 7 + /* ext capab */ 2487 extra_ies_len + 2488 sizeof(struct ieee80211_tdls_lnkie)); 2489 if (!skb) 2490 return -ENOMEM; 2491 2492 info = IEEE80211_SKB_CB(skb); 2493 skb_reserve(skb, local->hw.extra_tx_headroom); 2494 2495 switch (action_code) { 2496 case WLAN_TDLS_SETUP_REQUEST: 2497 case WLAN_TDLS_SETUP_RESPONSE: 2498 case WLAN_TDLS_SETUP_CONFIRM: 2499 case WLAN_TDLS_TEARDOWN: 2500 case WLAN_TDLS_DISCOVERY_REQUEST: 2501 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer, 2502 action_code, dialog_token, 2503 status_code, skb); 2504 send_direct = false; 2505 break; 2506 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 2507 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code, 2508 dialog_token, status_code, 2509 skb); 2510 send_direct = true; 2511 break; 2512 default: 2513 ret = -ENOTSUPP; 2514 break; 2515 } 2516 2517 if (ret < 0) 2518 goto fail; 2519 2520 if (extra_ies_len) 2521 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); 2522 2523 /* the TDLS link IE is always added last */ 2524 switch (action_code) { 2525 case WLAN_TDLS_SETUP_REQUEST: 2526 case WLAN_TDLS_SETUP_CONFIRM: 2527 case WLAN_TDLS_TEARDOWN: 2528 case WLAN_TDLS_DISCOVERY_REQUEST: 2529 /* we are the initiator */ 2530 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer, 2531 sdata->u.mgd.bssid); 2532 break; 2533 case WLAN_TDLS_SETUP_RESPONSE: 2534 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 2535 /* we are the responder */ 2536 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr, 2537 sdata->u.mgd.bssid); 2538 break; 2539 default: 2540 ret = -ENOTSUPP; 2541 goto fail; 2542 } 2543 2544 if (send_direct) { 2545 ieee80211_tx_skb(sdata, skb); 2546 return 0; 2547 } 2548 2549 /* 2550 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise 2551 * we should default to AC_VI. 2552 */ 2553 switch (action_code) { 2554 case WLAN_TDLS_SETUP_REQUEST: 2555 case WLAN_TDLS_SETUP_RESPONSE: 2556 skb_set_queue_mapping(skb, IEEE80211_AC_BK); 2557 skb->priority = 2; 2558 break; 2559 default: 2560 skb_set_queue_mapping(skb, IEEE80211_AC_VI); 2561 skb->priority = 5; 2562 break; 2563 } 2564 2565 /* disable bottom halves when entering the Tx path */ 2566 local_bh_disable(); 2567 ret = ieee80211_subif_start_xmit(skb, dev); 2568 local_bh_enable(); 2569 2570 return ret; 2571 2572 fail: 2573 dev_kfree_skb(skb); 2574 return ret; 2575 } 2576 2577 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2578 u8 *peer, enum nl80211_tdls_operation oper) 2579 { 2580 struct sta_info *sta; 2581 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2582 2583 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 2584 return -ENOTSUPP; 2585 2586 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2587 return -EINVAL; 2588 2589 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG 2590 printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer); 2591 #endif 2592 2593 switch (oper) { 2594 case NL80211_TDLS_ENABLE_LINK: 2595 rcu_read_lock(); 2596 sta = sta_info_get(sdata, peer); 2597 if (!sta) { 2598 rcu_read_unlock(); 2599 return -ENOLINK; 2600 } 2601 2602 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); 2603 rcu_read_unlock(); 2604 break; 2605 case NL80211_TDLS_DISABLE_LINK: 2606 return sta_info_destroy_addr(sdata, peer); 2607 case NL80211_TDLS_TEARDOWN: 2608 case NL80211_TDLS_SETUP: 2609 case NL80211_TDLS_DISCOVERY_REQ: 2610 /* We don't support in-driver setup/teardown/discovery */ 2611 return -ENOTSUPP; 2612 default: 2613 return -ENOTSUPP; 2614 } 2615 2616 return 0; 2617 } 2618 2619 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 2620 const u8 *peer, u64 *cookie) 2621 { 2622 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2623 struct ieee80211_local *local = sdata->local; 2624 struct ieee80211_qos_hdr *nullfunc; 2625 struct sk_buff *skb; 2626 int size = sizeof(*nullfunc); 2627 __le16 fc; 2628 bool qos; 2629 struct ieee80211_tx_info *info; 2630 struct sta_info *sta; 2631 2632 rcu_read_lock(); 2633 sta = sta_info_get(sdata, peer); 2634 if (sta) { 2635 qos = test_sta_flag(sta, WLAN_STA_WME); 2636 rcu_read_unlock(); 2637 } else { 2638 rcu_read_unlock(); 2639 return -ENOLINK; 2640 } 2641 2642 if (qos) { 2643 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 2644 IEEE80211_STYPE_QOS_NULLFUNC | 2645 IEEE80211_FCTL_FROMDS); 2646 } else { 2647 size -= 2; 2648 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 2649 IEEE80211_STYPE_NULLFUNC | 2650 IEEE80211_FCTL_FROMDS); 2651 } 2652 2653 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 2654 if (!skb) 2655 return -ENOMEM; 2656 2657 skb->dev = dev; 2658 2659 skb_reserve(skb, local->hw.extra_tx_headroom); 2660 2661 nullfunc = (void *) skb_put(skb, size); 2662 nullfunc->frame_control = fc; 2663 nullfunc->duration_id = 0; 2664 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 2665 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 2666 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 2667 nullfunc->seq_ctrl = 0; 2668 2669 info = IEEE80211_SKB_CB(skb); 2670 2671 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 2672 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 2673 2674 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 2675 skb->priority = 7; 2676 if (qos) 2677 nullfunc->qos_ctrl = cpu_to_le16(7); 2678 2679 local_bh_disable(); 2680 ieee80211_xmit(sdata, skb); 2681 local_bh_enable(); 2682 2683 *cookie = (unsigned long) skb; 2684 return 0; 2685 } 2686 2687 static struct ieee80211_channel * 2688 ieee80211_wiphy_get_channel(struct wiphy *wiphy) 2689 { 2690 struct ieee80211_local *local = wiphy_priv(wiphy); 2691 2692 return local->oper_channel; 2693 } 2694 2695 struct cfg80211_ops mac80211_config_ops = { 2696 .add_virtual_intf = ieee80211_add_iface, 2697 .del_virtual_intf = ieee80211_del_iface, 2698 .change_virtual_intf = ieee80211_change_iface, 2699 .add_key = ieee80211_add_key, 2700 .del_key = ieee80211_del_key, 2701 .get_key = ieee80211_get_key, 2702 .set_default_key = ieee80211_config_default_key, 2703 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 2704 .add_beacon = ieee80211_add_beacon, 2705 .set_beacon = ieee80211_set_beacon, 2706 .del_beacon = ieee80211_del_beacon, 2707 .add_station = ieee80211_add_station, 2708 .del_station = ieee80211_del_station, 2709 .change_station = ieee80211_change_station, 2710 .get_station = ieee80211_get_station, 2711 .dump_station = ieee80211_dump_station, 2712 .dump_survey = ieee80211_dump_survey, 2713 #ifdef CONFIG_MAC80211_MESH 2714 .add_mpath = ieee80211_add_mpath, 2715 .del_mpath = ieee80211_del_mpath, 2716 .change_mpath = ieee80211_change_mpath, 2717 .get_mpath = ieee80211_get_mpath, 2718 .dump_mpath = ieee80211_dump_mpath, 2719 .update_mesh_config = ieee80211_update_mesh_config, 2720 .get_mesh_config = ieee80211_get_mesh_config, 2721 .join_mesh = ieee80211_join_mesh, 2722 .leave_mesh = ieee80211_leave_mesh, 2723 #endif 2724 .change_bss = ieee80211_change_bss, 2725 .set_txq_params = ieee80211_set_txq_params, 2726 .set_channel = ieee80211_set_channel, 2727 .suspend = ieee80211_suspend, 2728 .resume = ieee80211_resume, 2729 .scan = ieee80211_scan, 2730 .sched_scan_start = ieee80211_sched_scan_start, 2731 .sched_scan_stop = ieee80211_sched_scan_stop, 2732 .auth = ieee80211_auth, 2733 .assoc = ieee80211_assoc, 2734 .deauth = ieee80211_deauth, 2735 .disassoc = ieee80211_disassoc, 2736 .join_ibss = ieee80211_join_ibss, 2737 .leave_ibss = ieee80211_leave_ibss, 2738 .set_wiphy_params = ieee80211_set_wiphy_params, 2739 .set_tx_power = ieee80211_set_tx_power, 2740 .get_tx_power = ieee80211_get_tx_power, 2741 .set_wds_peer = ieee80211_set_wds_peer, 2742 .rfkill_poll = ieee80211_rfkill_poll, 2743 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 2744 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 2745 .set_power_mgmt = ieee80211_set_power_mgmt, 2746 .set_bitrate_mask = ieee80211_set_bitrate_mask, 2747 .remain_on_channel = ieee80211_remain_on_channel, 2748 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 2749 .mgmt_tx = ieee80211_mgmt_tx, 2750 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 2751 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 2752 .mgmt_frame_register = ieee80211_mgmt_frame_register, 2753 .set_antenna = ieee80211_set_antenna, 2754 .get_antenna = ieee80211_get_antenna, 2755 .set_ringparam = ieee80211_set_ringparam, 2756 .get_ringparam = ieee80211_get_ringparam, 2757 .set_rekey_data = ieee80211_set_rekey_data, 2758 .tdls_oper = ieee80211_tdls_oper, 2759 .tdls_mgmt = ieee80211_tdls_mgmt, 2760 .probe_client = ieee80211_probe_client, 2761 .get_channel = ieee80211_wiphy_get_channel, 2762 .set_noack_map = ieee80211_set_noack_map, 2763 }; 2764