1 /* 2 * mac80211 configuration hooks for cfg80211 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * 6 * This file is GPLv2 as found in COPYING. 7 */ 8 9 #include <linux/ieee80211.h> 10 #include <linux/nl80211.h> 11 #include <linux/rtnetlink.h> 12 #include <linux/slab.h> 13 #include <net/net_namespace.h> 14 #include <linux/rcupdate.h> 15 #include <net/cfg80211.h> 16 #include "ieee80211_i.h" 17 #include "driver-ops.h" 18 #include "cfg.h" 19 #include "rate.h" 20 #include "mesh.h" 21 22 static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name, 23 enum nl80211_iftype type, 24 u32 *flags, 25 struct vif_params *params) 26 { 27 struct ieee80211_local *local = wiphy_priv(wiphy); 28 struct net_device *dev; 29 struct ieee80211_sub_if_data *sdata; 30 int err; 31 32 err = ieee80211_if_add(local, name, &dev, type, params); 33 if (err) 34 return ERR_PTR(err); 35 36 if (type == NL80211_IFTYPE_MONITOR && flags) { 37 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 38 sdata->u.mntr_flags = *flags; 39 } 40 41 return dev; 42 } 43 44 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev) 45 { 46 ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev)); 47 48 return 0; 49 } 50 51 static int ieee80211_change_iface(struct wiphy *wiphy, 52 struct net_device *dev, 53 enum nl80211_iftype type, u32 *flags, 54 struct vif_params *params) 55 { 56 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 57 int ret; 58 59 ret = ieee80211_if_change_type(sdata, type); 60 if (ret) 61 return ret; 62 63 if (type == NL80211_IFTYPE_AP_VLAN && 64 params && params->use_4addr == 0) 65 rcu_assign_pointer(sdata->u.vlan.sta, NULL); 66 else if (type == NL80211_IFTYPE_STATION && 67 params && params->use_4addr >= 0) 68 sdata->u.mgd.use_4addr = params->use_4addr; 69 70 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) { 71 struct ieee80211_local *local = sdata->local; 72 73 if (ieee80211_sdata_running(sdata)) { 74 /* 75 * Prohibit MONITOR_FLAG_COOK_FRAMES to be 76 * changed while the interface is up. 77 * Else we would need to add a lot of cruft 78 * to update everything: 79 * cooked_mntrs, monitor and all fif_* counters 80 * reconfigure hardware 81 */ 82 if ((*flags & MONITOR_FLAG_COOK_FRAMES) != 83 (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES)) 84 return -EBUSY; 85 86 ieee80211_adjust_monitor_flags(sdata, -1); 87 sdata->u.mntr_flags = *flags; 88 ieee80211_adjust_monitor_flags(sdata, 1); 89 90 ieee80211_configure_filter(local); 91 } else { 92 /* 93 * Because the interface is down, ieee80211_do_stop 94 * and ieee80211_do_open take care of "everything" 95 * mentioned in the comment above. 96 */ 97 sdata->u.mntr_flags = *flags; 98 } 99 } 100 101 return 0; 102 } 103 104 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 105 u8 key_idx, bool pairwise, const u8 *mac_addr, 106 struct key_params *params) 107 { 108 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 109 struct sta_info *sta = NULL; 110 struct ieee80211_key *key; 111 int err; 112 113 if (!ieee80211_sdata_running(sdata)) 114 return -ENETDOWN; 115 116 /* reject WEP and TKIP keys if WEP failed to initialize */ 117 switch (params->cipher) { 118 case WLAN_CIPHER_SUITE_WEP40: 119 case WLAN_CIPHER_SUITE_TKIP: 120 case WLAN_CIPHER_SUITE_WEP104: 121 if (IS_ERR(sdata->local->wep_tx_tfm)) 122 return -EINVAL; 123 break; 124 default: 125 break; 126 } 127 128 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 129 params->key, params->seq_len, params->seq); 130 if (IS_ERR(key)) 131 return PTR_ERR(key); 132 133 if (pairwise) 134 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 135 136 mutex_lock(&sdata->local->sta_mtx); 137 138 if (mac_addr) { 139 if (ieee80211_vif_is_mesh(&sdata->vif)) 140 sta = sta_info_get(sdata, mac_addr); 141 else 142 sta = sta_info_get_bss(sdata, mac_addr); 143 if (!sta) { 144 ieee80211_key_free(sdata->local, key); 145 err = -ENOENT; 146 goto out_unlock; 147 } 148 } 149 150 err = ieee80211_key_link(key, sdata, sta); 151 if (err) 152 ieee80211_key_free(sdata->local, key); 153 154 out_unlock: 155 mutex_unlock(&sdata->local->sta_mtx); 156 157 return err; 158 } 159 160 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 161 u8 key_idx, bool pairwise, const u8 *mac_addr) 162 { 163 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 164 struct ieee80211_local *local = sdata->local; 165 struct sta_info *sta; 166 struct ieee80211_key *key = NULL; 167 int ret; 168 169 mutex_lock(&local->sta_mtx); 170 mutex_lock(&local->key_mtx); 171 172 if (mac_addr) { 173 ret = -ENOENT; 174 175 sta = sta_info_get_bss(sdata, mac_addr); 176 if (!sta) 177 goto out_unlock; 178 179 if (pairwise) 180 key = key_mtx_dereference(local, sta->ptk); 181 else 182 key = key_mtx_dereference(local, sta->gtk[key_idx]); 183 } else 184 key = key_mtx_dereference(local, sdata->keys[key_idx]); 185 186 if (!key) { 187 ret = -ENOENT; 188 goto out_unlock; 189 } 190 191 __ieee80211_key_free(key); 192 193 ret = 0; 194 out_unlock: 195 mutex_unlock(&local->key_mtx); 196 mutex_unlock(&local->sta_mtx); 197 198 return ret; 199 } 200 201 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 202 u8 key_idx, bool pairwise, const u8 *mac_addr, 203 void *cookie, 204 void (*callback)(void *cookie, 205 struct key_params *params)) 206 { 207 struct ieee80211_sub_if_data *sdata; 208 struct sta_info *sta = NULL; 209 u8 seq[6] = {0}; 210 struct key_params params; 211 struct ieee80211_key *key = NULL; 212 u64 pn64; 213 u32 iv32; 214 u16 iv16; 215 int err = -ENOENT; 216 217 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 218 219 rcu_read_lock(); 220 221 if (mac_addr) { 222 sta = sta_info_get_bss(sdata, mac_addr); 223 if (!sta) 224 goto out; 225 226 if (pairwise) 227 key = rcu_dereference(sta->ptk); 228 else if (key_idx < NUM_DEFAULT_KEYS) 229 key = rcu_dereference(sta->gtk[key_idx]); 230 } else 231 key = rcu_dereference(sdata->keys[key_idx]); 232 233 if (!key) 234 goto out; 235 236 memset(¶ms, 0, sizeof(params)); 237 238 params.cipher = key->conf.cipher; 239 240 switch (key->conf.cipher) { 241 case WLAN_CIPHER_SUITE_TKIP: 242 iv32 = key->u.tkip.tx.iv32; 243 iv16 = key->u.tkip.tx.iv16; 244 245 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 246 drv_get_tkip_seq(sdata->local, 247 key->conf.hw_key_idx, 248 &iv32, &iv16); 249 250 seq[0] = iv16 & 0xff; 251 seq[1] = (iv16 >> 8) & 0xff; 252 seq[2] = iv32 & 0xff; 253 seq[3] = (iv32 >> 8) & 0xff; 254 seq[4] = (iv32 >> 16) & 0xff; 255 seq[5] = (iv32 >> 24) & 0xff; 256 params.seq = seq; 257 params.seq_len = 6; 258 break; 259 case WLAN_CIPHER_SUITE_CCMP: 260 pn64 = atomic64_read(&key->u.ccmp.tx_pn); 261 seq[0] = pn64; 262 seq[1] = pn64 >> 8; 263 seq[2] = pn64 >> 16; 264 seq[3] = pn64 >> 24; 265 seq[4] = pn64 >> 32; 266 seq[5] = pn64 >> 40; 267 params.seq = seq; 268 params.seq_len = 6; 269 break; 270 case WLAN_CIPHER_SUITE_AES_CMAC: 271 pn64 = atomic64_read(&key->u.aes_cmac.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 } 282 283 params.key = key->conf.key; 284 params.key_len = key->conf.keylen; 285 286 callback(cookie, ¶ms); 287 err = 0; 288 289 out: 290 rcu_read_unlock(); 291 return err; 292 } 293 294 static int ieee80211_config_default_key(struct wiphy *wiphy, 295 struct net_device *dev, 296 u8 key_idx, bool uni, 297 bool multi) 298 { 299 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 300 301 ieee80211_set_default_key(sdata, key_idx, uni, multi); 302 303 return 0; 304 } 305 306 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 307 struct net_device *dev, 308 u8 key_idx) 309 { 310 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 311 312 ieee80211_set_default_mgmt_key(sdata, key_idx); 313 314 return 0; 315 } 316 317 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx) 318 { 319 if (!(rate->flags & RATE_INFO_FLAGS_MCS)) { 320 struct ieee80211_supported_band *sband; 321 sband = sta->local->hw.wiphy->bands[ 322 sta->local->hw.conf.channel->band]; 323 rate->legacy = sband->bitrates[idx].bitrate; 324 } else 325 rate->mcs = idx; 326 } 327 328 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 329 { 330 struct ieee80211_sub_if_data *sdata = sta->sdata; 331 struct timespec uptime; 332 333 sinfo->generation = sdata->local->sta_generation; 334 335 sinfo->filled = STATION_INFO_INACTIVE_TIME | 336 STATION_INFO_RX_BYTES | 337 STATION_INFO_TX_BYTES | 338 STATION_INFO_RX_PACKETS | 339 STATION_INFO_TX_PACKETS | 340 STATION_INFO_TX_RETRIES | 341 STATION_INFO_TX_FAILED | 342 STATION_INFO_TX_BITRATE | 343 STATION_INFO_RX_BITRATE | 344 STATION_INFO_RX_DROP_MISC | 345 STATION_INFO_BSS_PARAM | 346 STATION_INFO_CONNECTED_TIME; 347 348 do_posix_clock_monotonic_gettime(&uptime); 349 sinfo->connected_time = uptime.tv_sec - sta->last_connected; 350 351 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); 352 sinfo->rx_bytes = sta->rx_bytes; 353 sinfo->tx_bytes = sta->tx_bytes; 354 sinfo->rx_packets = sta->rx_packets; 355 sinfo->tx_packets = sta->tx_packets; 356 sinfo->tx_retries = sta->tx_retry_count; 357 sinfo->tx_failed = sta->tx_retry_failed; 358 sinfo->rx_dropped_misc = sta->rx_dropped; 359 360 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || 361 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { 362 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG; 363 sinfo->signal = (s8)sta->last_signal; 364 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); 365 } 366 367 sinfo->txrate.flags = 0; 368 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS) 369 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS; 370 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 371 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 372 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI) 373 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 374 rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx); 375 376 sinfo->rxrate.flags = 0; 377 if (sta->last_rx_rate_flag & RX_FLAG_HT) 378 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS; 379 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 380 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 381 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 382 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 383 rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx); 384 385 if (ieee80211_vif_is_mesh(&sdata->vif)) { 386 #ifdef CONFIG_MAC80211_MESH 387 sinfo->filled |= STATION_INFO_LLID | 388 STATION_INFO_PLID | 389 STATION_INFO_PLINK_STATE; 390 391 sinfo->llid = le16_to_cpu(sta->llid); 392 sinfo->plid = le16_to_cpu(sta->plid); 393 sinfo->plink_state = sta->plink_state; 394 #endif 395 } 396 397 sinfo->bss_param.flags = 0; 398 if (sdata->vif.bss_conf.use_cts_prot) 399 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; 400 if (sdata->vif.bss_conf.use_short_preamble) 401 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; 402 if (sdata->vif.bss_conf.use_short_slot) 403 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; 404 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period; 405 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; 406 } 407 408 409 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 410 int idx, u8 *mac, struct station_info *sinfo) 411 { 412 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 413 struct sta_info *sta; 414 int ret = -ENOENT; 415 416 rcu_read_lock(); 417 418 sta = sta_info_get_by_idx(sdata, idx); 419 if (sta) { 420 ret = 0; 421 memcpy(mac, sta->sta.addr, ETH_ALEN); 422 sta_set_sinfo(sta, sinfo); 423 } 424 425 rcu_read_unlock(); 426 427 return ret; 428 } 429 430 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 431 int idx, struct survey_info *survey) 432 { 433 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 434 435 return drv_get_survey(local, idx, survey); 436 } 437 438 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 439 u8 *mac, struct station_info *sinfo) 440 { 441 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 442 struct sta_info *sta; 443 int ret = -ENOENT; 444 445 rcu_read_lock(); 446 447 sta = sta_info_get_bss(sdata, mac); 448 if (sta) { 449 ret = 0; 450 sta_set_sinfo(sta, sinfo); 451 } 452 453 rcu_read_unlock(); 454 455 return ret; 456 } 457 458 /* 459 * This handles both adding a beacon and setting new beacon info 460 */ 461 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, 462 struct beacon_parameters *params) 463 { 464 struct beacon_data *new, *old; 465 int new_head_len, new_tail_len; 466 int size; 467 int err = -EINVAL; 468 469 old = rtnl_dereference(sdata->u.ap.beacon); 470 471 /* head must not be zero-length */ 472 if (params->head && !params->head_len) 473 return -EINVAL; 474 475 /* 476 * This is a kludge. beacon interval should really be part 477 * of the beacon information. 478 */ 479 if (params->interval && 480 (sdata->vif.bss_conf.beacon_int != params->interval)) { 481 sdata->vif.bss_conf.beacon_int = params->interval; 482 ieee80211_bss_info_change_notify(sdata, 483 BSS_CHANGED_BEACON_INT); 484 } 485 486 /* Need to have a beacon head if we don't have one yet */ 487 if (!params->head && !old) 488 return err; 489 490 /* sorry, no way to start beaconing without dtim period */ 491 if (!params->dtim_period && !old) 492 return err; 493 494 /* new or old head? */ 495 if (params->head) 496 new_head_len = params->head_len; 497 else 498 new_head_len = old->head_len; 499 500 /* new or old tail? */ 501 if (params->tail || !old) 502 /* params->tail_len will be zero for !params->tail */ 503 new_tail_len = params->tail_len; 504 else 505 new_tail_len = old->tail_len; 506 507 size = sizeof(*new) + new_head_len + new_tail_len; 508 509 new = kzalloc(size, GFP_KERNEL); 510 if (!new) 511 return -ENOMEM; 512 513 /* start filling the new info now */ 514 515 /* new or old dtim period? */ 516 if (params->dtim_period) 517 new->dtim_period = params->dtim_period; 518 else 519 new->dtim_period = old->dtim_period; 520 521 /* 522 * pointers go into the block we allocated, 523 * memory is | beacon_data | head | tail | 524 */ 525 new->head = ((u8 *) new) + sizeof(*new); 526 new->tail = new->head + new_head_len; 527 new->head_len = new_head_len; 528 new->tail_len = new_tail_len; 529 530 /* copy in head */ 531 if (params->head) 532 memcpy(new->head, params->head, new_head_len); 533 else 534 memcpy(new->head, old->head, new_head_len); 535 536 /* copy in optional tail */ 537 if (params->tail) 538 memcpy(new->tail, params->tail, new_tail_len); 539 else 540 if (old) 541 memcpy(new->tail, old->tail, new_tail_len); 542 543 sdata->vif.bss_conf.dtim_period = new->dtim_period; 544 545 rcu_assign_pointer(sdata->u.ap.beacon, new); 546 547 synchronize_rcu(); 548 549 kfree(old); 550 551 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED | 552 BSS_CHANGED_BEACON); 553 return 0; 554 } 555 556 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev, 557 struct beacon_parameters *params) 558 { 559 struct ieee80211_sub_if_data *sdata; 560 struct beacon_data *old; 561 562 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 563 564 old = rtnl_dereference(sdata->u.ap.beacon); 565 if (old) 566 return -EALREADY; 567 568 return ieee80211_config_beacon(sdata, params); 569 } 570 571 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev, 572 struct beacon_parameters *params) 573 { 574 struct ieee80211_sub_if_data *sdata; 575 struct beacon_data *old; 576 577 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 578 579 old = rtnl_dereference(sdata->u.ap.beacon); 580 if (!old) 581 return -ENOENT; 582 583 return ieee80211_config_beacon(sdata, params); 584 } 585 586 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev) 587 { 588 struct ieee80211_sub_if_data *sdata; 589 struct beacon_data *old; 590 591 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 592 593 old = rtnl_dereference(sdata->u.ap.beacon); 594 if (!old) 595 return -ENOENT; 596 597 rcu_assign_pointer(sdata->u.ap.beacon, NULL); 598 synchronize_rcu(); 599 kfree(old); 600 601 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 602 return 0; 603 } 604 605 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 606 struct iapp_layer2_update { 607 u8 da[ETH_ALEN]; /* broadcast */ 608 u8 sa[ETH_ALEN]; /* STA addr */ 609 __be16 len; /* 6 */ 610 u8 dsap; /* 0 */ 611 u8 ssap; /* 0 */ 612 u8 control; 613 u8 xid_info[3]; 614 } __packed; 615 616 static void ieee80211_send_layer2_update(struct sta_info *sta) 617 { 618 struct iapp_layer2_update *msg; 619 struct sk_buff *skb; 620 621 /* Send Level 2 Update Frame to update forwarding tables in layer 2 622 * bridge devices */ 623 624 skb = dev_alloc_skb(sizeof(*msg)); 625 if (!skb) 626 return; 627 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 628 629 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 630 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 631 632 memset(msg->da, 0xff, ETH_ALEN); 633 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 634 msg->len = htons(6); 635 msg->dsap = 0; 636 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 637 msg->control = 0xaf; /* XID response lsb.1111F101. 638 * F=0 (no poll command; unsolicited frame) */ 639 msg->xid_info[0] = 0x81; /* XID format identifier */ 640 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 641 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 642 643 skb->dev = sta->sdata->dev; 644 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 645 memset(skb->cb, 0, sizeof(skb->cb)); 646 netif_rx_ni(skb); 647 } 648 649 static void sta_apply_parameters(struct ieee80211_local *local, 650 struct sta_info *sta, 651 struct station_parameters *params) 652 { 653 unsigned long flags; 654 u32 rates; 655 int i, j; 656 struct ieee80211_supported_band *sband; 657 struct ieee80211_sub_if_data *sdata = sta->sdata; 658 u32 mask, set; 659 660 sband = local->hw.wiphy->bands[local->oper_channel->band]; 661 662 spin_lock_irqsave(&sta->flaglock, flags); 663 mask = params->sta_flags_mask; 664 set = params->sta_flags_set; 665 666 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 667 sta->flags &= ~WLAN_STA_AUTHORIZED; 668 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 669 sta->flags |= WLAN_STA_AUTHORIZED; 670 } 671 672 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 673 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE; 674 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 675 sta->flags |= WLAN_STA_SHORT_PREAMBLE; 676 } 677 678 if (mask & BIT(NL80211_STA_FLAG_WME)) { 679 sta->flags &= ~WLAN_STA_WME; 680 sta->sta.wme = false; 681 if (set & BIT(NL80211_STA_FLAG_WME)) { 682 sta->flags |= WLAN_STA_WME; 683 sta->sta.wme = true; 684 } 685 } 686 687 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 688 sta->flags &= ~WLAN_STA_MFP; 689 if (set & BIT(NL80211_STA_FLAG_MFP)) 690 sta->flags |= WLAN_STA_MFP; 691 } 692 693 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) { 694 sta->flags &= ~WLAN_STA_AUTH; 695 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 696 sta->flags |= WLAN_STA_AUTH; 697 } 698 spin_unlock_irqrestore(&sta->flaglock, flags); 699 700 /* 701 * cfg80211 validates this (1-2007) and allows setting the AID 702 * only when creating a new station entry 703 */ 704 if (params->aid) 705 sta->sta.aid = params->aid; 706 707 /* 708 * FIXME: updating the following information is racy when this 709 * function is called from ieee80211_change_station(). 710 * However, all this information should be static so 711 * maybe we should just reject attemps to change it. 712 */ 713 714 if (params->listen_interval >= 0) 715 sta->listen_interval = params->listen_interval; 716 717 if (params->supported_rates) { 718 rates = 0; 719 720 for (i = 0; i < params->supported_rates_len; i++) { 721 int rate = (params->supported_rates[i] & 0x7f) * 5; 722 for (j = 0; j < sband->n_bitrates; j++) { 723 if (sband->bitrates[j].bitrate == rate) 724 rates |= BIT(j); 725 } 726 } 727 sta->sta.supp_rates[local->oper_channel->band] = rates; 728 } 729 730 if (params->ht_capa) 731 ieee80211_ht_cap_ie_to_sta_ht_cap(sband, 732 params->ht_capa, 733 &sta->sta.ht_cap); 734 735 if (ieee80211_vif_is_mesh(&sdata->vif)) { 736 #ifdef CONFIG_MAC80211_MESH 737 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED) 738 switch (params->plink_state) { 739 case NL80211_PLINK_LISTEN: 740 case NL80211_PLINK_ESTAB: 741 case NL80211_PLINK_BLOCKED: 742 sta->plink_state = params->plink_state; 743 break; 744 default: 745 /* nothing */ 746 break; 747 } 748 else 749 switch (params->plink_action) { 750 case PLINK_ACTION_OPEN: 751 mesh_plink_open(sta); 752 break; 753 case PLINK_ACTION_BLOCK: 754 mesh_plink_block(sta); 755 break; 756 } 757 #endif 758 } 759 } 760 761 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 762 u8 *mac, struct station_parameters *params) 763 { 764 struct ieee80211_local *local = wiphy_priv(wiphy); 765 struct sta_info *sta; 766 struct ieee80211_sub_if_data *sdata; 767 int err; 768 int layer2_update; 769 770 if (params->vlan) { 771 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 772 773 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 774 sdata->vif.type != NL80211_IFTYPE_AP) 775 return -EINVAL; 776 } else 777 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 778 779 if (compare_ether_addr(mac, sdata->vif.addr) == 0) 780 return -EINVAL; 781 782 if (is_multicast_ether_addr(mac)) 783 return -EINVAL; 784 785 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 786 if (!sta) 787 return -ENOMEM; 788 789 sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; 790 791 sta_apply_parameters(local, sta, params); 792 793 rate_control_rate_init(sta); 794 795 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 796 sdata->vif.type == NL80211_IFTYPE_AP; 797 798 err = sta_info_insert_rcu(sta); 799 if (err) { 800 rcu_read_unlock(); 801 return err; 802 } 803 804 if (layer2_update) 805 ieee80211_send_layer2_update(sta); 806 807 rcu_read_unlock(); 808 809 return 0; 810 } 811 812 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 813 u8 *mac) 814 { 815 struct ieee80211_local *local = wiphy_priv(wiphy); 816 struct ieee80211_sub_if_data *sdata; 817 818 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 819 820 if (mac) 821 return sta_info_destroy_addr_bss(sdata, mac); 822 823 sta_info_flush(local, sdata); 824 return 0; 825 } 826 827 static int ieee80211_change_station(struct wiphy *wiphy, 828 struct net_device *dev, 829 u8 *mac, 830 struct station_parameters *params) 831 { 832 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 833 struct ieee80211_local *local = wiphy_priv(wiphy); 834 struct sta_info *sta; 835 struct ieee80211_sub_if_data *vlansdata; 836 837 rcu_read_lock(); 838 839 sta = sta_info_get_bss(sdata, mac); 840 if (!sta) { 841 rcu_read_unlock(); 842 return -ENOENT; 843 } 844 845 if (params->vlan && params->vlan != sta->sdata->dev) { 846 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 847 848 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN && 849 vlansdata->vif.type != NL80211_IFTYPE_AP) { 850 rcu_read_unlock(); 851 return -EINVAL; 852 } 853 854 if (params->vlan->ieee80211_ptr->use_4addr) { 855 if (vlansdata->u.vlan.sta) { 856 rcu_read_unlock(); 857 return -EBUSY; 858 } 859 860 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 861 } 862 863 sta->sdata = vlansdata; 864 ieee80211_send_layer2_update(sta); 865 } 866 867 sta_apply_parameters(local, sta, params); 868 869 rcu_read_unlock(); 870 871 if (sdata->vif.type == NL80211_IFTYPE_STATION && 872 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) 873 ieee80211_recalc_ps(local, -1); 874 875 return 0; 876 } 877 878 #ifdef CONFIG_MAC80211_MESH 879 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 880 u8 *dst, u8 *next_hop) 881 { 882 struct ieee80211_sub_if_data *sdata; 883 struct mesh_path *mpath; 884 struct sta_info *sta; 885 int err; 886 887 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 888 889 rcu_read_lock(); 890 sta = sta_info_get(sdata, next_hop); 891 if (!sta) { 892 rcu_read_unlock(); 893 return -ENOENT; 894 } 895 896 err = mesh_path_add(dst, sdata); 897 if (err) { 898 rcu_read_unlock(); 899 return err; 900 } 901 902 mpath = mesh_path_lookup(dst, sdata); 903 if (!mpath) { 904 rcu_read_unlock(); 905 return -ENXIO; 906 } 907 mesh_path_fix_nexthop(mpath, sta); 908 909 rcu_read_unlock(); 910 return 0; 911 } 912 913 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 914 u8 *dst) 915 { 916 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 917 918 if (dst) 919 return mesh_path_del(dst, sdata); 920 921 mesh_path_flush(sdata); 922 return 0; 923 } 924 925 static int ieee80211_change_mpath(struct wiphy *wiphy, 926 struct net_device *dev, 927 u8 *dst, u8 *next_hop) 928 { 929 struct ieee80211_sub_if_data *sdata; 930 struct mesh_path *mpath; 931 struct sta_info *sta; 932 933 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 934 935 rcu_read_lock(); 936 937 sta = sta_info_get(sdata, next_hop); 938 if (!sta) { 939 rcu_read_unlock(); 940 return -ENOENT; 941 } 942 943 mpath = mesh_path_lookup(dst, sdata); 944 if (!mpath) { 945 rcu_read_unlock(); 946 return -ENOENT; 947 } 948 949 mesh_path_fix_nexthop(mpath, sta); 950 951 rcu_read_unlock(); 952 return 0; 953 } 954 955 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 956 struct mpath_info *pinfo) 957 { 958 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 959 960 if (next_hop_sta) 961 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 962 else 963 memset(next_hop, 0, ETH_ALEN); 964 965 pinfo->generation = mesh_paths_generation; 966 967 pinfo->filled = MPATH_INFO_FRAME_QLEN | 968 MPATH_INFO_SN | 969 MPATH_INFO_METRIC | 970 MPATH_INFO_EXPTIME | 971 MPATH_INFO_DISCOVERY_TIMEOUT | 972 MPATH_INFO_DISCOVERY_RETRIES | 973 MPATH_INFO_FLAGS; 974 975 pinfo->frame_qlen = mpath->frame_queue.qlen; 976 pinfo->sn = mpath->sn; 977 pinfo->metric = mpath->metric; 978 if (time_before(jiffies, mpath->exp_time)) 979 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 980 pinfo->discovery_timeout = 981 jiffies_to_msecs(mpath->discovery_timeout); 982 pinfo->discovery_retries = mpath->discovery_retries; 983 pinfo->flags = 0; 984 if (mpath->flags & MESH_PATH_ACTIVE) 985 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 986 if (mpath->flags & MESH_PATH_RESOLVING) 987 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 988 if (mpath->flags & MESH_PATH_SN_VALID) 989 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 990 if (mpath->flags & MESH_PATH_FIXED) 991 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 992 if (mpath->flags & MESH_PATH_RESOLVING) 993 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 994 995 pinfo->flags = mpath->flags; 996 } 997 998 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 999 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1000 1001 { 1002 struct ieee80211_sub_if_data *sdata; 1003 struct mesh_path *mpath; 1004 1005 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1006 1007 rcu_read_lock(); 1008 mpath = mesh_path_lookup(dst, sdata); 1009 if (!mpath) { 1010 rcu_read_unlock(); 1011 return -ENOENT; 1012 } 1013 memcpy(dst, mpath->dst, ETH_ALEN); 1014 mpath_set_pinfo(mpath, next_hop, pinfo); 1015 rcu_read_unlock(); 1016 return 0; 1017 } 1018 1019 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1020 int idx, u8 *dst, u8 *next_hop, 1021 struct mpath_info *pinfo) 1022 { 1023 struct ieee80211_sub_if_data *sdata; 1024 struct mesh_path *mpath; 1025 1026 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1027 1028 rcu_read_lock(); 1029 mpath = mesh_path_lookup_by_idx(idx, sdata); 1030 if (!mpath) { 1031 rcu_read_unlock(); 1032 return -ENOENT; 1033 } 1034 memcpy(dst, mpath->dst, ETH_ALEN); 1035 mpath_set_pinfo(mpath, next_hop, pinfo); 1036 rcu_read_unlock(); 1037 return 0; 1038 } 1039 1040 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1041 struct net_device *dev, 1042 struct mesh_config *conf) 1043 { 1044 struct ieee80211_sub_if_data *sdata; 1045 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1046 1047 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1048 return 0; 1049 } 1050 1051 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1052 { 1053 return (mask >> (parm-1)) & 0x1; 1054 } 1055 1056 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1057 const struct mesh_setup *setup) 1058 { 1059 u8 *new_ie; 1060 const u8 *old_ie; 1061 1062 /* allocate information elements */ 1063 new_ie = NULL; 1064 old_ie = ifmsh->ie; 1065 1066 if (setup->ie_len) { 1067 new_ie = kmemdup(setup->ie, setup->ie_len, 1068 GFP_KERNEL); 1069 if (!new_ie) 1070 return -ENOMEM; 1071 } 1072 ifmsh->ie_len = setup->ie_len; 1073 ifmsh->ie = new_ie; 1074 kfree(old_ie); 1075 1076 /* now copy the rest of the setup parameters */ 1077 ifmsh->mesh_id_len = setup->mesh_id_len; 1078 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1079 ifmsh->mesh_pp_id = setup->path_sel_proto; 1080 ifmsh->mesh_pm_id = setup->path_metric; 1081 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1082 if (setup->is_authenticated) 1083 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1084 if (setup->is_secure) 1085 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1086 1087 return 0; 1088 } 1089 1090 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1091 struct net_device *dev, u32 mask, 1092 const struct mesh_config *nconf) 1093 { 1094 struct mesh_config *conf; 1095 struct ieee80211_sub_if_data *sdata; 1096 struct ieee80211_if_mesh *ifmsh; 1097 1098 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1099 ifmsh = &sdata->u.mesh; 1100 1101 /* Set the config options which we are interested in setting */ 1102 conf = &(sdata->u.mesh.mshcfg); 1103 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1104 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1105 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1106 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1107 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1108 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1109 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1110 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1111 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1112 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1113 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1114 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1115 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1116 conf->dot11MeshTTL = nconf->element_ttl; 1117 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) 1118 conf->auto_open_plinks = nconf->auto_open_plinks; 1119 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1120 conf->dot11MeshHWMPmaxPREQretries = 1121 nconf->dot11MeshHWMPmaxPREQretries; 1122 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1123 conf->path_refresh_time = nconf->path_refresh_time; 1124 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1125 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1126 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1127 conf->dot11MeshHWMPactivePathTimeout = 1128 nconf->dot11MeshHWMPactivePathTimeout; 1129 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1130 conf->dot11MeshHWMPpreqMinInterval = 1131 nconf->dot11MeshHWMPpreqMinInterval; 1132 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1133 mask)) 1134 conf->dot11MeshHWMPnetDiameterTraversalTime = 1135 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1136 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1137 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1138 ieee80211_mesh_root_setup(ifmsh); 1139 } 1140 return 0; 1141 } 1142 1143 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1144 const struct mesh_config *conf, 1145 const struct mesh_setup *setup) 1146 { 1147 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1148 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1149 int err; 1150 1151 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1152 err = copy_mesh_setup(ifmsh, setup); 1153 if (err) 1154 return err; 1155 ieee80211_start_mesh(sdata); 1156 1157 return 0; 1158 } 1159 1160 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1161 { 1162 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1163 1164 ieee80211_stop_mesh(sdata); 1165 1166 return 0; 1167 } 1168 #endif 1169 1170 static int ieee80211_change_bss(struct wiphy *wiphy, 1171 struct net_device *dev, 1172 struct bss_parameters *params) 1173 { 1174 struct ieee80211_sub_if_data *sdata; 1175 u32 changed = 0; 1176 1177 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1178 1179 if (params->use_cts_prot >= 0) { 1180 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1181 changed |= BSS_CHANGED_ERP_CTS_PROT; 1182 } 1183 if (params->use_short_preamble >= 0) { 1184 sdata->vif.bss_conf.use_short_preamble = 1185 params->use_short_preamble; 1186 changed |= BSS_CHANGED_ERP_PREAMBLE; 1187 } 1188 1189 if (!sdata->vif.bss_conf.use_short_slot && 1190 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) { 1191 sdata->vif.bss_conf.use_short_slot = true; 1192 changed |= BSS_CHANGED_ERP_SLOT; 1193 } 1194 1195 if (params->use_short_slot_time >= 0) { 1196 sdata->vif.bss_conf.use_short_slot = 1197 params->use_short_slot_time; 1198 changed |= BSS_CHANGED_ERP_SLOT; 1199 } 1200 1201 if (params->basic_rates) { 1202 int i, j; 1203 u32 rates = 0; 1204 struct ieee80211_local *local = wiphy_priv(wiphy); 1205 struct ieee80211_supported_band *sband = 1206 wiphy->bands[local->oper_channel->band]; 1207 1208 for (i = 0; i < params->basic_rates_len; i++) { 1209 int rate = (params->basic_rates[i] & 0x7f) * 5; 1210 for (j = 0; j < sband->n_bitrates; j++) { 1211 if (sband->bitrates[j].bitrate == rate) 1212 rates |= BIT(j); 1213 } 1214 } 1215 sdata->vif.bss_conf.basic_rates = rates; 1216 changed |= BSS_CHANGED_BASIC_RATES; 1217 } 1218 1219 if (params->ap_isolate >= 0) { 1220 if (params->ap_isolate) 1221 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1222 else 1223 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1224 } 1225 1226 if (params->ht_opmode >= 0) { 1227 sdata->vif.bss_conf.ht_operation_mode = 1228 (u16) params->ht_opmode; 1229 changed |= BSS_CHANGED_HT; 1230 } 1231 1232 ieee80211_bss_info_change_notify(sdata, changed); 1233 1234 return 0; 1235 } 1236 1237 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1238 struct ieee80211_txq_params *params) 1239 { 1240 struct ieee80211_local *local = wiphy_priv(wiphy); 1241 struct ieee80211_tx_queue_params p; 1242 1243 if (!local->ops->conf_tx) 1244 return -EOPNOTSUPP; 1245 1246 memset(&p, 0, sizeof(p)); 1247 p.aifs = params->aifs; 1248 p.cw_max = params->cwmax; 1249 p.cw_min = params->cwmin; 1250 p.txop = params->txop; 1251 1252 /* 1253 * Setting tx queue params disables u-apsd because it's only 1254 * called in master mode. 1255 */ 1256 p.uapsd = false; 1257 1258 if (drv_conf_tx(local, params->queue, &p)) { 1259 wiphy_debug(local->hw.wiphy, 1260 "failed to set TX queue parameters for queue %d\n", 1261 params->queue); 1262 return -EINVAL; 1263 } 1264 1265 return 0; 1266 } 1267 1268 static int ieee80211_set_channel(struct wiphy *wiphy, 1269 struct net_device *netdev, 1270 struct ieee80211_channel *chan, 1271 enum nl80211_channel_type channel_type) 1272 { 1273 struct ieee80211_local *local = wiphy_priv(wiphy); 1274 struct ieee80211_sub_if_data *sdata = NULL; 1275 struct ieee80211_channel *old_oper; 1276 enum nl80211_channel_type old_oper_type; 1277 enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT; 1278 1279 if (netdev) 1280 sdata = IEEE80211_DEV_TO_SUB_IF(netdev); 1281 1282 switch (ieee80211_get_channel_mode(local, NULL)) { 1283 case CHAN_MODE_HOPPING: 1284 return -EBUSY; 1285 case CHAN_MODE_FIXED: 1286 if (local->oper_channel != chan) 1287 return -EBUSY; 1288 if (!sdata && local->_oper_channel_type == channel_type) 1289 return 0; 1290 break; 1291 case CHAN_MODE_UNDEFINED: 1292 break; 1293 } 1294 1295 if (sdata) 1296 old_vif_oper_type = sdata->vif.bss_conf.channel_type; 1297 old_oper_type = local->_oper_channel_type; 1298 1299 if (!ieee80211_set_channel_type(local, sdata, channel_type)) 1300 return -EBUSY; 1301 1302 old_oper = local->oper_channel; 1303 local->oper_channel = chan; 1304 1305 /* Update driver if changes were actually made. */ 1306 if ((old_oper != local->oper_channel) || 1307 (old_oper_type != local->_oper_channel_type)) 1308 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); 1309 1310 if ((sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR) && 1311 old_vif_oper_type != sdata->vif.bss_conf.channel_type) 1312 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1313 1314 return 0; 1315 } 1316 1317 #ifdef CONFIG_PM 1318 static int ieee80211_suspend(struct wiphy *wiphy, 1319 struct cfg80211_wowlan *wowlan) 1320 { 1321 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1322 } 1323 1324 static int ieee80211_resume(struct wiphy *wiphy) 1325 { 1326 return __ieee80211_resume(wiphy_priv(wiphy)); 1327 } 1328 #else 1329 #define ieee80211_suspend NULL 1330 #define ieee80211_resume NULL 1331 #endif 1332 1333 static int ieee80211_scan(struct wiphy *wiphy, 1334 struct net_device *dev, 1335 struct cfg80211_scan_request *req) 1336 { 1337 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1338 1339 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1340 case NL80211_IFTYPE_STATION: 1341 case NL80211_IFTYPE_ADHOC: 1342 case NL80211_IFTYPE_MESH_POINT: 1343 case NL80211_IFTYPE_P2P_CLIENT: 1344 break; 1345 case NL80211_IFTYPE_P2P_GO: 1346 if (sdata->local->ops->hw_scan) 1347 break; 1348 /* 1349 * FIXME: implement NoA while scanning in software, 1350 * for now fall through to allow scanning only when 1351 * beaconing hasn't been configured yet 1352 */ 1353 case NL80211_IFTYPE_AP: 1354 if (sdata->u.ap.beacon) 1355 return -EOPNOTSUPP; 1356 break; 1357 default: 1358 return -EOPNOTSUPP; 1359 } 1360 1361 return ieee80211_request_scan(sdata, req); 1362 } 1363 1364 static int 1365 ieee80211_sched_scan_start(struct wiphy *wiphy, 1366 struct net_device *dev, 1367 struct cfg80211_sched_scan_request *req) 1368 { 1369 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1370 1371 if (!sdata->local->ops->sched_scan_start) 1372 return -EOPNOTSUPP; 1373 1374 return ieee80211_request_sched_scan_start(sdata, req); 1375 } 1376 1377 static int 1378 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 1379 { 1380 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1381 1382 if (!sdata->local->ops->sched_scan_stop) 1383 return -EOPNOTSUPP; 1384 1385 return ieee80211_request_sched_scan_stop(sdata); 1386 } 1387 1388 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 1389 struct cfg80211_auth_request *req) 1390 { 1391 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 1392 } 1393 1394 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 1395 struct cfg80211_assoc_request *req) 1396 { 1397 struct ieee80211_local *local = wiphy_priv(wiphy); 1398 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1399 1400 switch (ieee80211_get_channel_mode(local, sdata)) { 1401 case CHAN_MODE_HOPPING: 1402 return -EBUSY; 1403 case CHAN_MODE_FIXED: 1404 if (local->oper_channel == req->bss->channel) 1405 break; 1406 return -EBUSY; 1407 case CHAN_MODE_UNDEFINED: 1408 break; 1409 } 1410 1411 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 1412 } 1413 1414 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 1415 struct cfg80211_deauth_request *req, 1416 void *cookie) 1417 { 1418 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), 1419 req, cookie); 1420 } 1421 1422 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 1423 struct cfg80211_disassoc_request *req, 1424 void *cookie) 1425 { 1426 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), 1427 req, cookie); 1428 } 1429 1430 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 1431 struct cfg80211_ibss_params *params) 1432 { 1433 struct ieee80211_local *local = wiphy_priv(wiphy); 1434 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1435 1436 switch (ieee80211_get_channel_mode(local, sdata)) { 1437 case CHAN_MODE_HOPPING: 1438 return -EBUSY; 1439 case CHAN_MODE_FIXED: 1440 if (!params->channel_fixed) 1441 return -EBUSY; 1442 if (local->oper_channel == params->channel) 1443 break; 1444 return -EBUSY; 1445 case CHAN_MODE_UNDEFINED: 1446 break; 1447 } 1448 1449 return ieee80211_ibss_join(sdata, params); 1450 } 1451 1452 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 1453 { 1454 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1455 1456 return ieee80211_ibss_leave(sdata); 1457 } 1458 1459 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 1460 { 1461 struct ieee80211_local *local = wiphy_priv(wiphy); 1462 int err; 1463 1464 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 1465 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 1466 1467 if (err) 1468 return err; 1469 } 1470 1471 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 1472 err = drv_set_coverage_class(local, wiphy->coverage_class); 1473 1474 if (err) 1475 return err; 1476 } 1477 1478 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 1479 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 1480 1481 if (err) 1482 return err; 1483 } 1484 1485 if (changed & WIPHY_PARAM_RETRY_SHORT) 1486 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 1487 if (changed & WIPHY_PARAM_RETRY_LONG) 1488 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 1489 if (changed & 1490 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 1491 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 1492 1493 return 0; 1494 } 1495 1496 static int ieee80211_set_tx_power(struct wiphy *wiphy, 1497 enum nl80211_tx_power_setting type, int mbm) 1498 { 1499 struct ieee80211_local *local = wiphy_priv(wiphy); 1500 struct ieee80211_channel *chan = local->hw.conf.channel; 1501 u32 changes = 0; 1502 1503 switch (type) { 1504 case NL80211_TX_POWER_AUTOMATIC: 1505 local->user_power_level = -1; 1506 break; 1507 case NL80211_TX_POWER_LIMITED: 1508 if (mbm < 0 || (mbm % 100)) 1509 return -EOPNOTSUPP; 1510 local->user_power_level = MBM_TO_DBM(mbm); 1511 break; 1512 case NL80211_TX_POWER_FIXED: 1513 if (mbm < 0 || (mbm % 100)) 1514 return -EOPNOTSUPP; 1515 /* TODO: move to cfg80211 when it knows the channel */ 1516 if (MBM_TO_DBM(mbm) > chan->max_power) 1517 return -EINVAL; 1518 local->user_power_level = MBM_TO_DBM(mbm); 1519 break; 1520 } 1521 1522 ieee80211_hw_config(local, changes); 1523 1524 return 0; 1525 } 1526 1527 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm) 1528 { 1529 struct ieee80211_local *local = wiphy_priv(wiphy); 1530 1531 *dbm = local->hw.conf.power_level; 1532 1533 return 0; 1534 } 1535 1536 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 1537 const u8 *addr) 1538 { 1539 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1540 1541 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 1542 1543 return 0; 1544 } 1545 1546 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 1547 { 1548 struct ieee80211_local *local = wiphy_priv(wiphy); 1549 1550 drv_rfkill_poll(local); 1551 } 1552 1553 #ifdef CONFIG_NL80211_TESTMODE 1554 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len) 1555 { 1556 struct ieee80211_local *local = wiphy_priv(wiphy); 1557 1558 if (!local->ops->testmode_cmd) 1559 return -EOPNOTSUPP; 1560 1561 return local->ops->testmode_cmd(&local->hw, data, len); 1562 } 1563 1564 static int ieee80211_testmode_dump(struct wiphy *wiphy, 1565 struct sk_buff *skb, 1566 struct netlink_callback *cb, 1567 void *data, int len) 1568 { 1569 struct ieee80211_local *local = wiphy_priv(wiphy); 1570 1571 if (!local->ops->testmode_dump) 1572 return -EOPNOTSUPP; 1573 1574 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 1575 } 1576 #endif 1577 1578 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1579 enum ieee80211_smps_mode smps_mode) 1580 { 1581 const u8 *ap; 1582 enum ieee80211_smps_mode old_req; 1583 int err; 1584 1585 lockdep_assert_held(&sdata->u.mgd.mtx); 1586 1587 old_req = sdata->u.mgd.req_smps; 1588 sdata->u.mgd.req_smps = smps_mode; 1589 1590 if (old_req == smps_mode && 1591 smps_mode != IEEE80211_SMPS_AUTOMATIC) 1592 return 0; 1593 1594 /* 1595 * If not associated, or current association is not an HT 1596 * association, there's no need to send an action frame. 1597 */ 1598 if (!sdata->u.mgd.associated || 1599 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) { 1600 mutex_lock(&sdata->local->iflist_mtx); 1601 ieee80211_recalc_smps(sdata->local); 1602 mutex_unlock(&sdata->local->iflist_mtx); 1603 return 0; 1604 } 1605 1606 ap = sdata->u.mgd.associated->bssid; 1607 1608 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 1609 if (sdata->u.mgd.powersave) 1610 smps_mode = IEEE80211_SMPS_DYNAMIC; 1611 else 1612 smps_mode = IEEE80211_SMPS_OFF; 1613 } 1614 1615 /* send SM PS frame to AP */ 1616 err = ieee80211_send_smps_action(sdata, smps_mode, 1617 ap, ap); 1618 if (err) 1619 sdata->u.mgd.req_smps = old_req; 1620 1621 return err; 1622 } 1623 1624 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 1625 bool enabled, int timeout) 1626 { 1627 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1628 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 1629 1630 if (sdata->vif.type != NL80211_IFTYPE_STATION) 1631 return -EOPNOTSUPP; 1632 1633 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 1634 return -EOPNOTSUPP; 1635 1636 if (enabled == sdata->u.mgd.powersave && 1637 timeout == local->dynamic_ps_forced_timeout) 1638 return 0; 1639 1640 sdata->u.mgd.powersave = enabled; 1641 local->dynamic_ps_forced_timeout = timeout; 1642 1643 /* no change, but if automatic follow powersave */ 1644 mutex_lock(&sdata->u.mgd.mtx); 1645 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps); 1646 mutex_unlock(&sdata->u.mgd.mtx); 1647 1648 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 1649 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 1650 1651 ieee80211_recalc_ps(local, -1); 1652 1653 return 0; 1654 } 1655 1656 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 1657 struct net_device *dev, 1658 s32 rssi_thold, u32 rssi_hyst) 1659 { 1660 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1661 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 1662 struct ieee80211_vif *vif = &sdata->vif; 1663 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 1664 1665 if (rssi_thold == bss_conf->cqm_rssi_thold && 1666 rssi_hyst == bss_conf->cqm_rssi_hyst) 1667 return 0; 1668 1669 bss_conf->cqm_rssi_thold = rssi_thold; 1670 bss_conf->cqm_rssi_hyst = rssi_hyst; 1671 1672 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) { 1673 if (sdata->vif.type != NL80211_IFTYPE_STATION) 1674 return -EOPNOTSUPP; 1675 return 0; 1676 } 1677 1678 /* tell the driver upon association, unless already associated */ 1679 if (sdata->u.mgd.associated) 1680 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 1681 1682 return 0; 1683 } 1684 1685 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 1686 struct net_device *dev, 1687 const u8 *addr, 1688 const struct cfg80211_bitrate_mask *mask) 1689 { 1690 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1691 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 1692 int i, ret; 1693 1694 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 1695 ret = drv_set_bitrate_mask(local, sdata, mask); 1696 if (ret) 1697 return ret; 1698 } 1699 1700 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 1701 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 1702 1703 return 0; 1704 } 1705 1706 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local, 1707 struct net_device *dev, 1708 struct ieee80211_channel *chan, 1709 enum nl80211_channel_type chantype, 1710 unsigned int duration, u64 *cookie) 1711 { 1712 int ret; 1713 u32 random_cookie; 1714 1715 lockdep_assert_held(&local->mtx); 1716 1717 if (local->hw_roc_cookie) 1718 return -EBUSY; 1719 /* must be nonzero */ 1720 random_cookie = random32() | 1; 1721 1722 *cookie = random_cookie; 1723 local->hw_roc_dev = dev; 1724 local->hw_roc_cookie = random_cookie; 1725 local->hw_roc_channel = chan; 1726 local->hw_roc_channel_type = chantype; 1727 local->hw_roc_duration = duration; 1728 ret = drv_remain_on_channel(local, chan, chantype, duration); 1729 if (ret) { 1730 local->hw_roc_channel = NULL; 1731 local->hw_roc_cookie = 0; 1732 } 1733 1734 return ret; 1735 } 1736 1737 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 1738 struct net_device *dev, 1739 struct ieee80211_channel *chan, 1740 enum nl80211_channel_type channel_type, 1741 unsigned int duration, 1742 u64 *cookie) 1743 { 1744 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1745 struct ieee80211_local *local = sdata->local; 1746 1747 if (local->ops->remain_on_channel) { 1748 int ret; 1749 1750 mutex_lock(&local->mtx); 1751 ret = ieee80211_remain_on_channel_hw(local, dev, 1752 chan, channel_type, 1753 duration, cookie); 1754 local->hw_roc_for_tx = false; 1755 mutex_unlock(&local->mtx); 1756 1757 return ret; 1758 } 1759 1760 return ieee80211_wk_remain_on_channel(sdata, chan, channel_type, 1761 duration, cookie); 1762 } 1763 1764 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local, 1765 u64 cookie) 1766 { 1767 int ret; 1768 1769 lockdep_assert_held(&local->mtx); 1770 1771 if (local->hw_roc_cookie != cookie) 1772 return -ENOENT; 1773 1774 ret = drv_cancel_remain_on_channel(local); 1775 if (ret) 1776 return ret; 1777 1778 local->hw_roc_cookie = 0; 1779 local->hw_roc_channel = NULL; 1780 1781 ieee80211_recalc_idle(local); 1782 1783 return 0; 1784 } 1785 1786 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1787 struct net_device *dev, 1788 u64 cookie) 1789 { 1790 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1791 struct ieee80211_local *local = sdata->local; 1792 1793 if (local->ops->cancel_remain_on_channel) { 1794 int ret; 1795 1796 mutex_lock(&local->mtx); 1797 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie); 1798 mutex_unlock(&local->mtx); 1799 1800 return ret; 1801 } 1802 1803 return ieee80211_wk_cancel_remain_on_channel(sdata, cookie); 1804 } 1805 1806 static enum work_done_result 1807 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb) 1808 { 1809 /* 1810 * Use the data embedded in the work struct for reporting 1811 * here so if the driver mangled the SKB before dropping 1812 * it (which is the only way we really should get here) 1813 * then we don't report mangled data. 1814 * 1815 * If there was no wait time, then by the time we get here 1816 * the driver will likely not have reported the status yet, 1817 * so in that case userspace will have to deal with it. 1818 */ 1819 1820 if (wk->offchan_tx.wait && wk->offchan_tx.frame) 1821 cfg80211_mgmt_tx_status(wk->sdata->dev, 1822 (unsigned long) wk->offchan_tx.frame, 1823 wk->ie, wk->ie_len, false, GFP_KERNEL); 1824 1825 return WORK_DONE_DESTROY; 1826 } 1827 1828 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev, 1829 struct ieee80211_channel *chan, bool offchan, 1830 enum nl80211_channel_type channel_type, 1831 bool channel_type_valid, unsigned int wait, 1832 const u8 *buf, size_t len, u64 *cookie) 1833 { 1834 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1835 struct ieee80211_local *local = sdata->local; 1836 struct sk_buff *skb; 1837 struct sta_info *sta; 1838 struct ieee80211_work *wk; 1839 const struct ieee80211_mgmt *mgmt = (void *)buf; 1840 u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 1841 IEEE80211_TX_CTL_REQ_TX_STATUS; 1842 bool is_offchan = false; 1843 1844 /* Check that we are on the requested channel for transmission */ 1845 if (chan != local->tmp_channel && 1846 chan != local->oper_channel) 1847 is_offchan = true; 1848 if (channel_type_valid && 1849 (channel_type != local->tmp_channel_type && 1850 channel_type != local->_oper_channel_type)) 1851 is_offchan = true; 1852 1853 if (chan == local->hw_roc_channel) { 1854 /* TODO: check channel type? */ 1855 is_offchan = false; 1856 flags |= IEEE80211_TX_CTL_TX_OFFCHAN; 1857 } 1858 1859 if (is_offchan && !offchan) 1860 return -EBUSY; 1861 1862 switch (sdata->vif.type) { 1863 case NL80211_IFTYPE_ADHOC: 1864 case NL80211_IFTYPE_AP: 1865 case NL80211_IFTYPE_AP_VLAN: 1866 case NL80211_IFTYPE_P2P_GO: 1867 case NL80211_IFTYPE_MESH_POINT: 1868 if (!ieee80211_is_action(mgmt->frame_control) || 1869 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) 1870 break; 1871 rcu_read_lock(); 1872 sta = sta_info_get(sdata, mgmt->da); 1873 rcu_read_unlock(); 1874 if (!sta) 1875 return -ENOLINK; 1876 break; 1877 case NL80211_IFTYPE_STATION: 1878 case NL80211_IFTYPE_P2P_CLIENT: 1879 break; 1880 default: 1881 return -EOPNOTSUPP; 1882 } 1883 1884 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); 1885 if (!skb) 1886 return -ENOMEM; 1887 skb_reserve(skb, local->hw.extra_tx_headroom); 1888 1889 memcpy(skb_put(skb, len), buf, len); 1890 1891 IEEE80211_SKB_CB(skb)->flags = flags; 1892 1893 skb->dev = sdata->dev; 1894 1895 *cookie = (unsigned long) skb; 1896 1897 if (is_offchan && local->ops->offchannel_tx) { 1898 int ret; 1899 1900 IEEE80211_SKB_CB(skb)->band = chan->band; 1901 1902 mutex_lock(&local->mtx); 1903 1904 if (local->hw_offchan_tx_cookie) { 1905 mutex_unlock(&local->mtx); 1906 return -EBUSY; 1907 } 1908 1909 /* TODO: bitrate control, TX processing? */ 1910 ret = drv_offchannel_tx(local, skb, chan, channel_type, wait); 1911 1912 if (ret == 0) 1913 local->hw_offchan_tx_cookie = *cookie; 1914 mutex_unlock(&local->mtx); 1915 1916 /* 1917 * Allow driver to return 1 to indicate it wants to have the 1918 * frame transmitted with a remain_on_channel + regular TX. 1919 */ 1920 if (ret != 1) 1921 return ret; 1922 } 1923 1924 if (is_offchan && local->ops->remain_on_channel) { 1925 unsigned int duration; 1926 int ret; 1927 1928 mutex_lock(&local->mtx); 1929 /* 1930 * If the duration is zero, then the driver 1931 * wouldn't actually do anything. Set it to 1932 * 100 for now. 1933 * 1934 * TODO: cancel the off-channel operation 1935 * when we get the SKB's TX status and 1936 * the wait time was zero before. 1937 */ 1938 duration = 100; 1939 if (wait) 1940 duration = wait; 1941 ret = ieee80211_remain_on_channel_hw(local, dev, chan, 1942 channel_type, 1943 duration, cookie); 1944 if (ret) { 1945 kfree_skb(skb); 1946 mutex_unlock(&local->mtx); 1947 return ret; 1948 } 1949 1950 local->hw_roc_for_tx = true; 1951 local->hw_roc_duration = wait; 1952 1953 /* 1954 * queue up frame for transmission after 1955 * ieee80211_ready_on_channel call 1956 */ 1957 1958 /* modify cookie to prevent API mismatches */ 1959 *cookie ^= 2; 1960 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN; 1961 local->hw_roc_skb = skb; 1962 local->hw_roc_skb_for_status = skb; 1963 mutex_unlock(&local->mtx); 1964 1965 return 0; 1966 } 1967 1968 /* 1969 * Can transmit right away if the channel was the 1970 * right one and there's no wait involved... If a 1971 * wait is involved, we might otherwise not be on 1972 * the right channel for long enough! 1973 */ 1974 if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) { 1975 ieee80211_tx_skb(sdata, skb); 1976 return 0; 1977 } 1978 1979 wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL); 1980 if (!wk) { 1981 kfree_skb(skb); 1982 return -ENOMEM; 1983 } 1984 1985 wk->type = IEEE80211_WORK_OFFCHANNEL_TX; 1986 wk->chan = chan; 1987 wk->chan_type = channel_type; 1988 wk->sdata = sdata; 1989 wk->done = ieee80211_offchan_tx_done; 1990 wk->offchan_tx.frame = skb; 1991 wk->offchan_tx.wait = wait; 1992 wk->ie_len = len; 1993 memcpy(wk->ie, buf, len); 1994 1995 ieee80211_add_work(wk); 1996 return 0; 1997 } 1998 1999 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 2000 struct net_device *dev, 2001 u64 cookie) 2002 { 2003 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2004 struct ieee80211_local *local = sdata->local; 2005 struct ieee80211_work *wk; 2006 int ret = -ENOENT; 2007 2008 mutex_lock(&local->mtx); 2009 2010 if (local->ops->offchannel_tx_cancel_wait && 2011 local->hw_offchan_tx_cookie == cookie) { 2012 ret = drv_offchannel_tx_cancel_wait(local); 2013 2014 if (!ret) 2015 local->hw_offchan_tx_cookie = 0; 2016 2017 mutex_unlock(&local->mtx); 2018 2019 return ret; 2020 } 2021 2022 if (local->ops->cancel_remain_on_channel) { 2023 cookie ^= 2; 2024 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie); 2025 2026 if (ret == 0) { 2027 kfree_skb(local->hw_roc_skb); 2028 local->hw_roc_skb = NULL; 2029 local->hw_roc_skb_for_status = NULL; 2030 } 2031 2032 mutex_unlock(&local->mtx); 2033 2034 return ret; 2035 } 2036 2037 list_for_each_entry(wk, &local->work_list, list) { 2038 if (wk->sdata != sdata) 2039 continue; 2040 2041 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX) 2042 continue; 2043 2044 if (cookie != (unsigned long) wk->offchan_tx.frame) 2045 continue; 2046 2047 wk->timeout = jiffies; 2048 2049 ieee80211_queue_work(&local->hw, &local->work_work); 2050 ret = 0; 2051 break; 2052 } 2053 mutex_unlock(&local->mtx); 2054 2055 return ret; 2056 } 2057 2058 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 2059 struct net_device *dev, 2060 u16 frame_type, bool reg) 2061 { 2062 struct ieee80211_local *local = wiphy_priv(wiphy); 2063 2064 if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ)) 2065 return; 2066 2067 if (reg) 2068 local->probe_req_reg++; 2069 else 2070 local->probe_req_reg--; 2071 2072 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 2073 } 2074 2075 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 2076 { 2077 struct ieee80211_local *local = wiphy_priv(wiphy); 2078 2079 if (local->started) 2080 return -EOPNOTSUPP; 2081 2082 return drv_set_antenna(local, tx_ant, rx_ant); 2083 } 2084 2085 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 2086 { 2087 struct ieee80211_local *local = wiphy_priv(wiphy); 2088 2089 return drv_get_antenna(local, tx_ant, rx_ant); 2090 } 2091 2092 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) 2093 { 2094 struct ieee80211_local *local = wiphy_priv(wiphy); 2095 2096 return drv_set_ringparam(local, tx, rx); 2097 } 2098 2099 static void ieee80211_get_ringparam(struct wiphy *wiphy, 2100 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 2101 { 2102 struct ieee80211_local *local = wiphy_priv(wiphy); 2103 2104 drv_get_ringparam(local, tx, tx_max, rx, rx_max); 2105 } 2106 2107 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 2108 struct net_device *dev, 2109 struct cfg80211_gtk_rekey_data *data) 2110 { 2111 struct ieee80211_local *local = wiphy_priv(wiphy); 2112 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2113 2114 if (!local->ops->set_rekey_data) 2115 return -EOPNOTSUPP; 2116 2117 drv_set_rekey_data(local, sdata, data); 2118 2119 return 0; 2120 } 2121 2122 struct cfg80211_ops mac80211_config_ops = { 2123 .add_virtual_intf = ieee80211_add_iface, 2124 .del_virtual_intf = ieee80211_del_iface, 2125 .change_virtual_intf = ieee80211_change_iface, 2126 .add_key = ieee80211_add_key, 2127 .del_key = ieee80211_del_key, 2128 .get_key = ieee80211_get_key, 2129 .set_default_key = ieee80211_config_default_key, 2130 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 2131 .add_beacon = ieee80211_add_beacon, 2132 .set_beacon = ieee80211_set_beacon, 2133 .del_beacon = ieee80211_del_beacon, 2134 .add_station = ieee80211_add_station, 2135 .del_station = ieee80211_del_station, 2136 .change_station = ieee80211_change_station, 2137 .get_station = ieee80211_get_station, 2138 .dump_station = ieee80211_dump_station, 2139 .dump_survey = ieee80211_dump_survey, 2140 #ifdef CONFIG_MAC80211_MESH 2141 .add_mpath = ieee80211_add_mpath, 2142 .del_mpath = ieee80211_del_mpath, 2143 .change_mpath = ieee80211_change_mpath, 2144 .get_mpath = ieee80211_get_mpath, 2145 .dump_mpath = ieee80211_dump_mpath, 2146 .update_mesh_config = ieee80211_update_mesh_config, 2147 .get_mesh_config = ieee80211_get_mesh_config, 2148 .join_mesh = ieee80211_join_mesh, 2149 .leave_mesh = ieee80211_leave_mesh, 2150 #endif 2151 .change_bss = ieee80211_change_bss, 2152 .set_txq_params = ieee80211_set_txq_params, 2153 .set_channel = ieee80211_set_channel, 2154 .suspend = ieee80211_suspend, 2155 .resume = ieee80211_resume, 2156 .scan = ieee80211_scan, 2157 .sched_scan_start = ieee80211_sched_scan_start, 2158 .sched_scan_stop = ieee80211_sched_scan_stop, 2159 .auth = ieee80211_auth, 2160 .assoc = ieee80211_assoc, 2161 .deauth = ieee80211_deauth, 2162 .disassoc = ieee80211_disassoc, 2163 .join_ibss = ieee80211_join_ibss, 2164 .leave_ibss = ieee80211_leave_ibss, 2165 .set_wiphy_params = ieee80211_set_wiphy_params, 2166 .set_tx_power = ieee80211_set_tx_power, 2167 .get_tx_power = ieee80211_get_tx_power, 2168 .set_wds_peer = ieee80211_set_wds_peer, 2169 .rfkill_poll = ieee80211_rfkill_poll, 2170 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 2171 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 2172 .set_power_mgmt = ieee80211_set_power_mgmt, 2173 .set_bitrate_mask = ieee80211_set_bitrate_mask, 2174 .remain_on_channel = ieee80211_remain_on_channel, 2175 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 2176 .mgmt_tx = ieee80211_mgmt_tx, 2177 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 2178 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 2179 .mgmt_frame_register = ieee80211_mgmt_frame_register, 2180 .set_antenna = ieee80211_set_antenna, 2181 .get_antenna = ieee80211_get_antenna, 2182 .set_ringparam = ieee80211_set_ringparam, 2183 .get_ringparam = ieee80211_get_ringparam, 2184 .set_rekey_data = ieee80211_set_rekey_data, 2185 }; 2186