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 int ieee80211_add_iface(struct wiphy *wiphy, char *name, 23 enum nl80211_iftype type, u32 *flags, 24 struct vif_params *params) 25 { 26 struct ieee80211_local *local = wiphy_priv(wiphy); 27 struct net_device *dev; 28 struct ieee80211_sub_if_data *sdata; 29 int err; 30 31 err = ieee80211_if_add(local, name, &dev, type, params); 32 if (err || type != NL80211_IFTYPE_MONITOR || !flags) 33 return err; 34 35 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 36 sdata->u.mntr_flags = *flags; 37 return 0; 38 } 39 40 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev) 41 { 42 ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev)); 43 44 return 0; 45 } 46 47 static int ieee80211_change_iface(struct wiphy *wiphy, 48 struct net_device *dev, 49 enum nl80211_iftype type, u32 *flags, 50 struct vif_params *params) 51 { 52 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 53 int ret; 54 55 ret = ieee80211_if_change_type(sdata, type); 56 if (ret) 57 return ret; 58 59 if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len) 60 ieee80211_sdata_set_mesh_id(sdata, 61 params->mesh_id_len, 62 params->mesh_id); 63 64 if (type == NL80211_IFTYPE_AP_VLAN && 65 params && params->use_4addr == 0) 66 rcu_assign_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_add_key(struct wiphy *wiphy, struct net_device *dev, 106 u8 key_idx, bool pairwise, const u8 *mac_addr, 107 struct key_params *params) 108 { 109 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 110 struct sta_info *sta = NULL; 111 struct ieee80211_key *key; 112 int err; 113 114 if (!ieee80211_sdata_running(sdata)) 115 return -ENETDOWN; 116 117 /* reject WEP and TKIP keys if WEP failed to initialize */ 118 switch (params->cipher) { 119 case WLAN_CIPHER_SUITE_WEP40: 120 case WLAN_CIPHER_SUITE_TKIP: 121 case WLAN_CIPHER_SUITE_WEP104: 122 if (IS_ERR(sdata->local->wep_tx_tfm)) 123 return -EINVAL; 124 break; 125 default: 126 break; 127 } 128 129 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 130 params->key, params->seq_len, params->seq); 131 if (IS_ERR(key)) 132 return PTR_ERR(key); 133 134 if (pairwise) 135 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 136 137 mutex_lock(&sdata->local->sta_mtx); 138 139 if (mac_addr) { 140 sta = sta_info_get_bss(sdata, mac_addr); 141 if (!sta) { 142 ieee80211_key_free(sdata->local, key); 143 err = -ENOENT; 144 goto out_unlock; 145 } 146 } 147 148 err = ieee80211_key_link(key, sdata, sta); 149 if (err) 150 ieee80211_key_free(sdata->local, key); 151 152 out_unlock: 153 mutex_unlock(&sdata->local->sta_mtx); 154 155 return err; 156 } 157 158 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 159 u8 key_idx, bool pairwise, const u8 *mac_addr) 160 { 161 struct ieee80211_sub_if_data *sdata; 162 struct sta_info *sta; 163 int ret; 164 165 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 166 167 mutex_lock(&sdata->local->sta_mtx); 168 169 if (mac_addr) { 170 ret = -ENOENT; 171 172 sta = sta_info_get_bss(sdata, mac_addr); 173 if (!sta) 174 goto out_unlock; 175 176 if (pairwise) { 177 if (sta->ptk) { 178 ieee80211_key_free(sdata->local, sta->ptk); 179 ret = 0; 180 } 181 } else { 182 if (sta->gtk[key_idx]) { 183 ieee80211_key_free(sdata->local, 184 sta->gtk[key_idx]); 185 ret = 0; 186 } 187 } 188 189 goto out_unlock; 190 } 191 192 if (!sdata->keys[key_idx]) { 193 ret = -ENOENT; 194 goto out_unlock; 195 } 196 197 ieee80211_key_free(sdata->local, sdata->keys[key_idx]); 198 WARN_ON(sdata->keys[key_idx]); 199 200 ret = 0; 201 out_unlock: 202 mutex_unlock(&sdata->local->sta_mtx); 203 204 return ret; 205 } 206 207 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 208 u8 key_idx, bool pairwise, const u8 *mac_addr, 209 void *cookie, 210 void (*callback)(void *cookie, 211 struct key_params *params)) 212 { 213 struct ieee80211_sub_if_data *sdata; 214 struct sta_info *sta = NULL; 215 u8 seq[6] = {0}; 216 struct key_params params; 217 struct ieee80211_key *key = NULL; 218 u32 iv32; 219 u16 iv16; 220 int err = -ENOENT; 221 222 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 223 224 rcu_read_lock(); 225 226 if (mac_addr) { 227 sta = sta_info_get_bss(sdata, mac_addr); 228 if (!sta) 229 goto out; 230 231 if (pairwise) 232 key = sta->ptk; 233 else if (key_idx < NUM_DEFAULT_KEYS) 234 key = sta->gtk[key_idx]; 235 } else 236 key = sdata->keys[key_idx]; 237 238 if (!key) 239 goto out; 240 241 memset(¶ms, 0, sizeof(params)); 242 243 params.cipher = key->conf.cipher; 244 245 switch (key->conf.cipher) { 246 case WLAN_CIPHER_SUITE_TKIP: 247 iv32 = key->u.tkip.tx.iv32; 248 iv16 = key->u.tkip.tx.iv16; 249 250 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 251 drv_get_tkip_seq(sdata->local, 252 key->conf.hw_key_idx, 253 &iv32, &iv16); 254 255 seq[0] = iv16 & 0xff; 256 seq[1] = (iv16 >> 8) & 0xff; 257 seq[2] = iv32 & 0xff; 258 seq[3] = (iv32 >> 8) & 0xff; 259 seq[4] = (iv32 >> 16) & 0xff; 260 seq[5] = (iv32 >> 24) & 0xff; 261 params.seq = seq; 262 params.seq_len = 6; 263 break; 264 case WLAN_CIPHER_SUITE_CCMP: 265 seq[0] = key->u.ccmp.tx_pn[5]; 266 seq[1] = key->u.ccmp.tx_pn[4]; 267 seq[2] = key->u.ccmp.tx_pn[3]; 268 seq[3] = key->u.ccmp.tx_pn[2]; 269 seq[4] = key->u.ccmp.tx_pn[1]; 270 seq[5] = key->u.ccmp.tx_pn[0]; 271 params.seq = seq; 272 params.seq_len = 6; 273 break; 274 case WLAN_CIPHER_SUITE_AES_CMAC: 275 seq[0] = key->u.aes_cmac.tx_pn[5]; 276 seq[1] = key->u.aes_cmac.tx_pn[4]; 277 seq[2] = key->u.aes_cmac.tx_pn[3]; 278 seq[3] = key->u.aes_cmac.tx_pn[2]; 279 seq[4] = key->u.aes_cmac.tx_pn[1]; 280 seq[5] = key->u.aes_cmac.tx_pn[0]; 281 params.seq = seq; 282 params.seq_len = 6; 283 break; 284 } 285 286 params.key = key->conf.key; 287 params.key_len = key->conf.keylen; 288 289 callback(cookie, ¶ms); 290 err = 0; 291 292 out: 293 rcu_read_unlock(); 294 return err; 295 } 296 297 static int ieee80211_config_default_key(struct wiphy *wiphy, 298 struct net_device *dev, 299 u8 key_idx) 300 { 301 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 302 303 ieee80211_set_default_key(sdata, key_idx); 304 305 return 0; 306 } 307 308 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 309 struct net_device *dev, 310 u8 key_idx) 311 { 312 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 313 314 ieee80211_set_default_mgmt_key(sdata, key_idx); 315 316 return 0; 317 } 318 319 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 320 { 321 struct ieee80211_sub_if_data *sdata = sta->sdata; 322 323 sinfo->generation = sdata->local->sta_generation; 324 325 sinfo->filled = STATION_INFO_INACTIVE_TIME | 326 STATION_INFO_RX_BYTES | 327 STATION_INFO_TX_BYTES | 328 STATION_INFO_RX_PACKETS | 329 STATION_INFO_TX_PACKETS | 330 STATION_INFO_TX_RETRIES | 331 STATION_INFO_TX_FAILED | 332 STATION_INFO_TX_BITRATE | 333 STATION_INFO_RX_DROP_MISC; 334 335 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); 336 sinfo->rx_bytes = sta->rx_bytes; 337 sinfo->tx_bytes = sta->tx_bytes; 338 sinfo->rx_packets = sta->rx_packets; 339 sinfo->tx_packets = sta->tx_packets; 340 sinfo->tx_retries = sta->tx_retry_count; 341 sinfo->tx_failed = sta->tx_retry_failed; 342 sinfo->rx_dropped_misc = sta->rx_dropped; 343 344 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || 345 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { 346 sinfo->filled |= STATION_INFO_SIGNAL; 347 sinfo->signal = (s8)sta->last_signal; 348 } 349 350 sinfo->txrate.flags = 0; 351 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS) 352 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS; 353 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 354 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 355 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI) 356 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 357 358 if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) { 359 struct ieee80211_supported_band *sband; 360 sband = sta->local->hw.wiphy->bands[ 361 sta->local->hw.conf.channel->band]; 362 sinfo->txrate.legacy = 363 sband->bitrates[sta->last_tx_rate.idx].bitrate; 364 } else 365 sinfo->txrate.mcs = sta->last_tx_rate.idx; 366 367 if (ieee80211_vif_is_mesh(&sdata->vif)) { 368 #ifdef CONFIG_MAC80211_MESH 369 sinfo->filled |= STATION_INFO_LLID | 370 STATION_INFO_PLID | 371 STATION_INFO_PLINK_STATE; 372 373 sinfo->llid = le16_to_cpu(sta->llid); 374 sinfo->plid = le16_to_cpu(sta->plid); 375 sinfo->plink_state = sta->plink_state; 376 #endif 377 } 378 } 379 380 381 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 382 int idx, u8 *mac, struct station_info *sinfo) 383 { 384 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 385 struct sta_info *sta; 386 int ret = -ENOENT; 387 388 rcu_read_lock(); 389 390 sta = sta_info_get_by_idx(sdata, idx); 391 if (sta) { 392 ret = 0; 393 memcpy(mac, sta->sta.addr, ETH_ALEN); 394 sta_set_sinfo(sta, sinfo); 395 } 396 397 rcu_read_unlock(); 398 399 return ret; 400 } 401 402 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 403 int idx, struct survey_info *survey) 404 { 405 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 406 407 return drv_get_survey(local, idx, survey); 408 } 409 410 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 411 u8 *mac, struct station_info *sinfo) 412 { 413 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 414 struct sta_info *sta; 415 int ret = -ENOENT; 416 417 rcu_read_lock(); 418 419 sta = sta_info_get_bss(sdata, mac); 420 if (sta) { 421 ret = 0; 422 sta_set_sinfo(sta, sinfo); 423 } 424 425 rcu_read_unlock(); 426 427 return ret; 428 } 429 430 /* 431 * This handles both adding a beacon and setting new beacon info 432 */ 433 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, 434 struct beacon_parameters *params) 435 { 436 struct beacon_data *new, *old; 437 int new_head_len, new_tail_len; 438 int size; 439 int err = -EINVAL; 440 441 old = sdata->u.ap.beacon; 442 443 /* head must not be zero-length */ 444 if (params->head && !params->head_len) 445 return -EINVAL; 446 447 /* 448 * This is a kludge. beacon interval should really be part 449 * of the beacon information. 450 */ 451 if (params->interval && 452 (sdata->vif.bss_conf.beacon_int != params->interval)) { 453 sdata->vif.bss_conf.beacon_int = params->interval; 454 ieee80211_bss_info_change_notify(sdata, 455 BSS_CHANGED_BEACON_INT); 456 } 457 458 /* Need to have a beacon head if we don't have one yet */ 459 if (!params->head && !old) 460 return err; 461 462 /* sorry, no way to start beaconing without dtim period */ 463 if (!params->dtim_period && !old) 464 return err; 465 466 /* new or old head? */ 467 if (params->head) 468 new_head_len = params->head_len; 469 else 470 new_head_len = old->head_len; 471 472 /* new or old tail? */ 473 if (params->tail || !old) 474 /* params->tail_len will be zero for !params->tail */ 475 new_tail_len = params->tail_len; 476 else 477 new_tail_len = old->tail_len; 478 479 size = sizeof(*new) + new_head_len + new_tail_len; 480 481 new = kzalloc(size, GFP_KERNEL); 482 if (!new) 483 return -ENOMEM; 484 485 /* start filling the new info now */ 486 487 /* new or old dtim period? */ 488 if (params->dtim_period) 489 new->dtim_period = params->dtim_period; 490 else 491 new->dtim_period = old->dtim_period; 492 493 /* 494 * pointers go into the block we allocated, 495 * memory is | beacon_data | head | tail | 496 */ 497 new->head = ((u8 *) new) + sizeof(*new); 498 new->tail = new->head + new_head_len; 499 new->head_len = new_head_len; 500 new->tail_len = new_tail_len; 501 502 /* copy in head */ 503 if (params->head) 504 memcpy(new->head, params->head, new_head_len); 505 else 506 memcpy(new->head, old->head, new_head_len); 507 508 /* copy in optional tail */ 509 if (params->tail) 510 memcpy(new->tail, params->tail, new_tail_len); 511 else 512 if (old) 513 memcpy(new->tail, old->tail, new_tail_len); 514 515 sdata->vif.bss_conf.dtim_period = new->dtim_period; 516 517 rcu_assign_pointer(sdata->u.ap.beacon, new); 518 519 synchronize_rcu(); 520 521 kfree(old); 522 523 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED | 524 BSS_CHANGED_BEACON); 525 return 0; 526 } 527 528 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev, 529 struct beacon_parameters *params) 530 { 531 struct ieee80211_sub_if_data *sdata; 532 struct beacon_data *old; 533 534 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 535 536 old = sdata->u.ap.beacon; 537 538 if (old) 539 return -EALREADY; 540 541 return ieee80211_config_beacon(sdata, params); 542 } 543 544 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev, 545 struct beacon_parameters *params) 546 { 547 struct ieee80211_sub_if_data *sdata; 548 struct beacon_data *old; 549 550 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 551 552 old = sdata->u.ap.beacon; 553 554 if (!old) 555 return -ENOENT; 556 557 return ieee80211_config_beacon(sdata, params); 558 } 559 560 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev) 561 { 562 struct ieee80211_sub_if_data *sdata; 563 struct beacon_data *old; 564 565 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 566 567 old = sdata->u.ap.beacon; 568 569 if (!old) 570 return -ENOENT; 571 572 rcu_assign_pointer(sdata->u.ap.beacon, NULL); 573 synchronize_rcu(); 574 kfree(old); 575 576 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 577 return 0; 578 } 579 580 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 581 struct iapp_layer2_update { 582 u8 da[ETH_ALEN]; /* broadcast */ 583 u8 sa[ETH_ALEN]; /* STA addr */ 584 __be16 len; /* 6 */ 585 u8 dsap; /* 0 */ 586 u8 ssap; /* 0 */ 587 u8 control; 588 u8 xid_info[3]; 589 } __packed; 590 591 static void ieee80211_send_layer2_update(struct sta_info *sta) 592 { 593 struct iapp_layer2_update *msg; 594 struct sk_buff *skb; 595 596 /* Send Level 2 Update Frame to update forwarding tables in layer 2 597 * bridge devices */ 598 599 skb = dev_alloc_skb(sizeof(*msg)); 600 if (!skb) 601 return; 602 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 603 604 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 605 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 606 607 memset(msg->da, 0xff, ETH_ALEN); 608 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 609 msg->len = htons(6); 610 msg->dsap = 0; 611 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 612 msg->control = 0xaf; /* XID response lsb.1111F101. 613 * F=0 (no poll command; unsolicited frame) */ 614 msg->xid_info[0] = 0x81; /* XID format identifier */ 615 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 616 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 617 618 skb->dev = sta->sdata->dev; 619 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 620 memset(skb->cb, 0, sizeof(skb->cb)); 621 netif_rx_ni(skb); 622 } 623 624 static void sta_apply_parameters(struct ieee80211_local *local, 625 struct sta_info *sta, 626 struct station_parameters *params) 627 { 628 unsigned long flags; 629 u32 rates; 630 int i, j; 631 struct ieee80211_supported_band *sband; 632 struct ieee80211_sub_if_data *sdata = sta->sdata; 633 u32 mask, set; 634 635 sband = local->hw.wiphy->bands[local->oper_channel->band]; 636 637 spin_lock_irqsave(&sta->flaglock, flags); 638 mask = params->sta_flags_mask; 639 set = params->sta_flags_set; 640 641 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 642 sta->flags &= ~WLAN_STA_AUTHORIZED; 643 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 644 sta->flags |= WLAN_STA_AUTHORIZED; 645 } 646 647 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 648 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE; 649 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 650 sta->flags |= WLAN_STA_SHORT_PREAMBLE; 651 } 652 653 if (mask & BIT(NL80211_STA_FLAG_WME)) { 654 sta->flags &= ~WLAN_STA_WME; 655 if (set & BIT(NL80211_STA_FLAG_WME)) 656 sta->flags |= WLAN_STA_WME; 657 } 658 659 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 660 sta->flags &= ~WLAN_STA_MFP; 661 if (set & BIT(NL80211_STA_FLAG_MFP)) 662 sta->flags |= WLAN_STA_MFP; 663 } 664 spin_unlock_irqrestore(&sta->flaglock, flags); 665 666 /* 667 * cfg80211 validates this (1-2007) and allows setting the AID 668 * only when creating a new station entry 669 */ 670 if (params->aid) 671 sta->sta.aid = params->aid; 672 673 /* 674 * FIXME: updating the following information is racy when this 675 * function is called from ieee80211_change_station(). 676 * However, all this information should be static so 677 * maybe we should just reject attemps to change it. 678 */ 679 680 if (params->listen_interval >= 0) 681 sta->listen_interval = params->listen_interval; 682 683 if (params->supported_rates) { 684 rates = 0; 685 686 for (i = 0; i < params->supported_rates_len; i++) { 687 int rate = (params->supported_rates[i] & 0x7f) * 5; 688 for (j = 0; j < sband->n_bitrates; j++) { 689 if (sband->bitrates[j].bitrate == rate) 690 rates |= BIT(j); 691 } 692 } 693 sta->sta.supp_rates[local->oper_channel->band] = rates; 694 } 695 696 if (params->ht_capa) 697 ieee80211_ht_cap_ie_to_sta_ht_cap(sband, 698 params->ht_capa, 699 &sta->sta.ht_cap); 700 701 if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) { 702 switch (params->plink_action) { 703 case PLINK_ACTION_OPEN: 704 mesh_plink_open(sta); 705 break; 706 case PLINK_ACTION_BLOCK: 707 mesh_plink_block(sta); 708 break; 709 } 710 } 711 } 712 713 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 714 u8 *mac, struct station_parameters *params) 715 { 716 struct ieee80211_local *local = wiphy_priv(wiphy); 717 struct sta_info *sta; 718 struct ieee80211_sub_if_data *sdata; 719 int err; 720 int layer2_update; 721 722 if (params->vlan) { 723 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 724 725 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 726 sdata->vif.type != NL80211_IFTYPE_AP) 727 return -EINVAL; 728 } else 729 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 730 731 if (compare_ether_addr(mac, sdata->vif.addr) == 0) 732 return -EINVAL; 733 734 if (is_multicast_ether_addr(mac)) 735 return -EINVAL; 736 737 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 738 if (!sta) 739 return -ENOMEM; 740 741 sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; 742 743 sta_apply_parameters(local, sta, params); 744 745 rate_control_rate_init(sta); 746 747 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 748 sdata->vif.type == NL80211_IFTYPE_AP; 749 750 err = sta_info_insert_rcu(sta); 751 if (err) { 752 rcu_read_unlock(); 753 return err; 754 } 755 756 if (layer2_update) 757 ieee80211_send_layer2_update(sta); 758 759 rcu_read_unlock(); 760 761 return 0; 762 } 763 764 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 765 u8 *mac) 766 { 767 struct ieee80211_local *local = wiphy_priv(wiphy); 768 struct ieee80211_sub_if_data *sdata; 769 770 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 771 772 if (mac) 773 return sta_info_destroy_addr_bss(sdata, mac); 774 775 sta_info_flush(local, sdata); 776 return 0; 777 } 778 779 static int ieee80211_change_station(struct wiphy *wiphy, 780 struct net_device *dev, 781 u8 *mac, 782 struct station_parameters *params) 783 { 784 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 785 struct ieee80211_local *local = wiphy_priv(wiphy); 786 struct sta_info *sta; 787 struct ieee80211_sub_if_data *vlansdata; 788 789 rcu_read_lock(); 790 791 sta = sta_info_get_bss(sdata, mac); 792 if (!sta) { 793 rcu_read_unlock(); 794 return -ENOENT; 795 } 796 797 if (params->vlan && params->vlan != sta->sdata->dev) { 798 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 799 800 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN && 801 vlansdata->vif.type != NL80211_IFTYPE_AP) { 802 rcu_read_unlock(); 803 return -EINVAL; 804 } 805 806 if (params->vlan->ieee80211_ptr->use_4addr) { 807 if (vlansdata->u.vlan.sta) { 808 rcu_read_unlock(); 809 return -EBUSY; 810 } 811 812 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 813 } 814 815 sta->sdata = vlansdata; 816 ieee80211_send_layer2_update(sta); 817 } 818 819 sta_apply_parameters(local, sta, params); 820 821 rcu_read_unlock(); 822 823 return 0; 824 } 825 826 #ifdef CONFIG_MAC80211_MESH 827 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 828 u8 *dst, u8 *next_hop) 829 { 830 struct ieee80211_sub_if_data *sdata; 831 struct mesh_path *mpath; 832 struct sta_info *sta; 833 int err; 834 835 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 836 837 rcu_read_lock(); 838 sta = sta_info_get(sdata, next_hop); 839 if (!sta) { 840 rcu_read_unlock(); 841 return -ENOENT; 842 } 843 844 err = mesh_path_add(dst, sdata); 845 if (err) { 846 rcu_read_unlock(); 847 return err; 848 } 849 850 mpath = mesh_path_lookup(dst, sdata); 851 if (!mpath) { 852 rcu_read_unlock(); 853 return -ENXIO; 854 } 855 mesh_path_fix_nexthop(mpath, sta); 856 857 rcu_read_unlock(); 858 return 0; 859 } 860 861 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 862 u8 *dst) 863 { 864 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 865 866 if (dst) 867 return mesh_path_del(dst, sdata); 868 869 mesh_path_flush(sdata); 870 return 0; 871 } 872 873 static int ieee80211_change_mpath(struct wiphy *wiphy, 874 struct net_device *dev, 875 u8 *dst, u8 *next_hop) 876 { 877 struct ieee80211_sub_if_data *sdata; 878 struct mesh_path *mpath; 879 struct sta_info *sta; 880 881 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 882 883 rcu_read_lock(); 884 885 sta = sta_info_get(sdata, next_hop); 886 if (!sta) { 887 rcu_read_unlock(); 888 return -ENOENT; 889 } 890 891 mpath = mesh_path_lookup(dst, sdata); 892 if (!mpath) { 893 rcu_read_unlock(); 894 return -ENOENT; 895 } 896 897 mesh_path_fix_nexthop(mpath, sta); 898 899 rcu_read_unlock(); 900 return 0; 901 } 902 903 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 904 struct mpath_info *pinfo) 905 { 906 if (mpath->next_hop) 907 memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN); 908 else 909 memset(next_hop, 0, ETH_ALEN); 910 911 pinfo->generation = mesh_paths_generation; 912 913 pinfo->filled = MPATH_INFO_FRAME_QLEN | 914 MPATH_INFO_SN | 915 MPATH_INFO_METRIC | 916 MPATH_INFO_EXPTIME | 917 MPATH_INFO_DISCOVERY_TIMEOUT | 918 MPATH_INFO_DISCOVERY_RETRIES | 919 MPATH_INFO_FLAGS; 920 921 pinfo->frame_qlen = mpath->frame_queue.qlen; 922 pinfo->sn = mpath->sn; 923 pinfo->metric = mpath->metric; 924 if (time_before(jiffies, mpath->exp_time)) 925 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 926 pinfo->discovery_timeout = 927 jiffies_to_msecs(mpath->discovery_timeout); 928 pinfo->discovery_retries = mpath->discovery_retries; 929 pinfo->flags = 0; 930 if (mpath->flags & MESH_PATH_ACTIVE) 931 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 932 if (mpath->flags & MESH_PATH_RESOLVING) 933 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 934 if (mpath->flags & MESH_PATH_SN_VALID) 935 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 936 if (mpath->flags & MESH_PATH_FIXED) 937 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 938 if (mpath->flags & MESH_PATH_RESOLVING) 939 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 940 941 pinfo->flags = mpath->flags; 942 } 943 944 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 945 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 946 947 { 948 struct ieee80211_sub_if_data *sdata; 949 struct mesh_path *mpath; 950 951 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 952 953 rcu_read_lock(); 954 mpath = mesh_path_lookup(dst, sdata); 955 if (!mpath) { 956 rcu_read_unlock(); 957 return -ENOENT; 958 } 959 memcpy(dst, mpath->dst, ETH_ALEN); 960 mpath_set_pinfo(mpath, next_hop, pinfo); 961 rcu_read_unlock(); 962 return 0; 963 } 964 965 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 966 int idx, u8 *dst, u8 *next_hop, 967 struct mpath_info *pinfo) 968 { 969 struct ieee80211_sub_if_data *sdata; 970 struct mesh_path *mpath; 971 972 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 973 974 rcu_read_lock(); 975 mpath = mesh_path_lookup_by_idx(idx, sdata); 976 if (!mpath) { 977 rcu_read_unlock(); 978 return -ENOENT; 979 } 980 memcpy(dst, mpath->dst, ETH_ALEN); 981 mpath_set_pinfo(mpath, next_hop, pinfo); 982 rcu_read_unlock(); 983 return 0; 984 } 985 986 static int ieee80211_get_mesh_params(struct wiphy *wiphy, 987 struct net_device *dev, 988 struct mesh_config *conf) 989 { 990 struct ieee80211_sub_if_data *sdata; 991 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 992 993 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 994 return 0; 995 } 996 997 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 998 { 999 return (mask >> (parm-1)) & 0x1; 1000 } 1001 1002 static int ieee80211_set_mesh_params(struct wiphy *wiphy, 1003 struct net_device *dev, 1004 const struct mesh_config *nconf, u32 mask) 1005 { 1006 struct mesh_config *conf; 1007 struct ieee80211_sub_if_data *sdata; 1008 struct ieee80211_if_mesh *ifmsh; 1009 1010 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1011 ifmsh = &sdata->u.mesh; 1012 1013 /* Set the config options which we are interested in setting */ 1014 conf = &(sdata->u.mesh.mshcfg); 1015 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1016 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1017 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1018 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1019 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1020 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1021 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1022 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1023 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1024 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1025 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1026 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1027 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) 1028 conf->auto_open_plinks = nconf->auto_open_plinks; 1029 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1030 conf->dot11MeshHWMPmaxPREQretries = 1031 nconf->dot11MeshHWMPmaxPREQretries; 1032 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1033 conf->path_refresh_time = nconf->path_refresh_time; 1034 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1035 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1036 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1037 conf->dot11MeshHWMPactivePathTimeout = 1038 nconf->dot11MeshHWMPactivePathTimeout; 1039 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1040 conf->dot11MeshHWMPpreqMinInterval = 1041 nconf->dot11MeshHWMPpreqMinInterval; 1042 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1043 mask)) 1044 conf->dot11MeshHWMPnetDiameterTraversalTime = 1045 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1046 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1047 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1048 ieee80211_mesh_root_setup(ifmsh); 1049 } 1050 return 0; 1051 } 1052 1053 #endif 1054 1055 static int ieee80211_change_bss(struct wiphy *wiphy, 1056 struct net_device *dev, 1057 struct bss_parameters *params) 1058 { 1059 struct ieee80211_sub_if_data *sdata; 1060 u32 changed = 0; 1061 1062 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1063 1064 if (params->use_cts_prot >= 0) { 1065 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1066 changed |= BSS_CHANGED_ERP_CTS_PROT; 1067 } 1068 if (params->use_short_preamble >= 0) { 1069 sdata->vif.bss_conf.use_short_preamble = 1070 params->use_short_preamble; 1071 changed |= BSS_CHANGED_ERP_PREAMBLE; 1072 } 1073 1074 if (!sdata->vif.bss_conf.use_short_slot && 1075 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) { 1076 sdata->vif.bss_conf.use_short_slot = true; 1077 changed |= BSS_CHANGED_ERP_SLOT; 1078 } 1079 1080 if (params->use_short_slot_time >= 0) { 1081 sdata->vif.bss_conf.use_short_slot = 1082 params->use_short_slot_time; 1083 changed |= BSS_CHANGED_ERP_SLOT; 1084 } 1085 1086 if (params->basic_rates) { 1087 int i, j; 1088 u32 rates = 0; 1089 struct ieee80211_local *local = wiphy_priv(wiphy); 1090 struct ieee80211_supported_band *sband = 1091 wiphy->bands[local->oper_channel->band]; 1092 1093 for (i = 0; i < params->basic_rates_len; i++) { 1094 int rate = (params->basic_rates[i] & 0x7f) * 5; 1095 for (j = 0; j < sband->n_bitrates; j++) { 1096 if (sband->bitrates[j].bitrate == rate) 1097 rates |= BIT(j); 1098 } 1099 } 1100 sdata->vif.bss_conf.basic_rates = rates; 1101 changed |= BSS_CHANGED_BASIC_RATES; 1102 } 1103 1104 if (params->ap_isolate >= 0) { 1105 if (params->ap_isolate) 1106 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1107 else 1108 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1109 } 1110 1111 ieee80211_bss_info_change_notify(sdata, changed); 1112 1113 return 0; 1114 } 1115 1116 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1117 struct ieee80211_txq_params *params) 1118 { 1119 struct ieee80211_local *local = wiphy_priv(wiphy); 1120 struct ieee80211_tx_queue_params p; 1121 1122 if (!local->ops->conf_tx) 1123 return -EOPNOTSUPP; 1124 1125 memset(&p, 0, sizeof(p)); 1126 p.aifs = params->aifs; 1127 p.cw_max = params->cwmax; 1128 p.cw_min = params->cwmin; 1129 p.txop = params->txop; 1130 1131 /* 1132 * Setting tx queue params disables u-apsd because it's only 1133 * called in master mode. 1134 */ 1135 p.uapsd = false; 1136 1137 if (drv_conf_tx(local, params->queue, &p)) { 1138 wiphy_debug(local->hw.wiphy, 1139 "failed to set TX queue parameters for queue %d\n", 1140 params->queue); 1141 return -EINVAL; 1142 } 1143 1144 return 0; 1145 } 1146 1147 static int ieee80211_set_channel(struct wiphy *wiphy, 1148 struct net_device *netdev, 1149 struct ieee80211_channel *chan, 1150 enum nl80211_channel_type channel_type) 1151 { 1152 struct ieee80211_local *local = wiphy_priv(wiphy); 1153 struct ieee80211_sub_if_data *sdata = NULL; 1154 1155 if (netdev) 1156 sdata = IEEE80211_DEV_TO_SUB_IF(netdev); 1157 1158 switch (ieee80211_get_channel_mode(local, NULL)) { 1159 case CHAN_MODE_HOPPING: 1160 return -EBUSY; 1161 case CHAN_MODE_FIXED: 1162 if (local->oper_channel != chan) 1163 return -EBUSY; 1164 if (!sdata && local->_oper_channel_type == channel_type) 1165 return 0; 1166 break; 1167 case CHAN_MODE_UNDEFINED: 1168 break; 1169 } 1170 1171 local->oper_channel = chan; 1172 1173 if (!ieee80211_set_channel_type(local, sdata, channel_type)) 1174 return -EBUSY; 1175 1176 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); 1177 if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR) 1178 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1179 1180 return 0; 1181 } 1182 1183 #ifdef CONFIG_PM 1184 static int ieee80211_suspend(struct wiphy *wiphy) 1185 { 1186 return __ieee80211_suspend(wiphy_priv(wiphy)); 1187 } 1188 1189 static int ieee80211_resume(struct wiphy *wiphy) 1190 { 1191 return __ieee80211_resume(wiphy_priv(wiphy)); 1192 } 1193 #else 1194 #define ieee80211_suspend NULL 1195 #define ieee80211_resume NULL 1196 #endif 1197 1198 static int ieee80211_scan(struct wiphy *wiphy, 1199 struct net_device *dev, 1200 struct cfg80211_scan_request *req) 1201 { 1202 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1203 1204 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1205 case NL80211_IFTYPE_STATION: 1206 case NL80211_IFTYPE_ADHOC: 1207 case NL80211_IFTYPE_MESH_POINT: 1208 case NL80211_IFTYPE_P2P_CLIENT: 1209 break; 1210 case NL80211_IFTYPE_P2P_GO: 1211 if (sdata->local->ops->hw_scan) 1212 break; 1213 /* FIXME: implement NoA while scanning in software */ 1214 return -EOPNOTSUPP; 1215 case NL80211_IFTYPE_AP: 1216 if (sdata->u.ap.beacon) 1217 return -EOPNOTSUPP; 1218 break; 1219 default: 1220 return -EOPNOTSUPP; 1221 } 1222 1223 return ieee80211_request_scan(sdata, req); 1224 } 1225 1226 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 1227 struct cfg80211_auth_request *req) 1228 { 1229 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 1230 } 1231 1232 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 1233 struct cfg80211_assoc_request *req) 1234 { 1235 struct ieee80211_local *local = wiphy_priv(wiphy); 1236 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1237 1238 switch (ieee80211_get_channel_mode(local, sdata)) { 1239 case CHAN_MODE_HOPPING: 1240 return -EBUSY; 1241 case CHAN_MODE_FIXED: 1242 if (local->oper_channel == req->bss->channel) 1243 break; 1244 return -EBUSY; 1245 case CHAN_MODE_UNDEFINED: 1246 break; 1247 } 1248 1249 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 1250 } 1251 1252 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 1253 struct cfg80211_deauth_request *req, 1254 void *cookie) 1255 { 1256 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), 1257 req, cookie); 1258 } 1259 1260 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 1261 struct cfg80211_disassoc_request *req, 1262 void *cookie) 1263 { 1264 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), 1265 req, cookie); 1266 } 1267 1268 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 1269 struct cfg80211_ibss_params *params) 1270 { 1271 struct ieee80211_local *local = wiphy_priv(wiphy); 1272 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1273 1274 switch (ieee80211_get_channel_mode(local, sdata)) { 1275 case CHAN_MODE_HOPPING: 1276 return -EBUSY; 1277 case CHAN_MODE_FIXED: 1278 if (!params->channel_fixed) 1279 return -EBUSY; 1280 if (local->oper_channel == params->channel) 1281 break; 1282 return -EBUSY; 1283 case CHAN_MODE_UNDEFINED: 1284 break; 1285 } 1286 1287 return ieee80211_ibss_join(sdata, params); 1288 } 1289 1290 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 1291 { 1292 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1293 1294 return ieee80211_ibss_leave(sdata); 1295 } 1296 1297 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 1298 { 1299 struct ieee80211_local *local = wiphy_priv(wiphy); 1300 int err; 1301 1302 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 1303 err = drv_set_coverage_class(local, wiphy->coverage_class); 1304 1305 if (err) 1306 return err; 1307 } 1308 1309 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 1310 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 1311 1312 if (err) 1313 return err; 1314 } 1315 1316 if (changed & WIPHY_PARAM_RETRY_SHORT) 1317 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 1318 if (changed & WIPHY_PARAM_RETRY_LONG) 1319 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 1320 if (changed & 1321 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 1322 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 1323 1324 return 0; 1325 } 1326 1327 static int ieee80211_set_tx_power(struct wiphy *wiphy, 1328 enum nl80211_tx_power_setting type, int mbm) 1329 { 1330 struct ieee80211_local *local = wiphy_priv(wiphy); 1331 struct ieee80211_channel *chan = local->hw.conf.channel; 1332 u32 changes = 0; 1333 1334 switch (type) { 1335 case NL80211_TX_POWER_AUTOMATIC: 1336 local->user_power_level = -1; 1337 break; 1338 case NL80211_TX_POWER_LIMITED: 1339 if (mbm < 0 || (mbm % 100)) 1340 return -EOPNOTSUPP; 1341 local->user_power_level = MBM_TO_DBM(mbm); 1342 break; 1343 case NL80211_TX_POWER_FIXED: 1344 if (mbm < 0 || (mbm % 100)) 1345 return -EOPNOTSUPP; 1346 /* TODO: move to cfg80211 when it knows the channel */ 1347 if (MBM_TO_DBM(mbm) > chan->max_power) 1348 return -EINVAL; 1349 local->user_power_level = MBM_TO_DBM(mbm); 1350 break; 1351 } 1352 1353 ieee80211_hw_config(local, changes); 1354 1355 return 0; 1356 } 1357 1358 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm) 1359 { 1360 struct ieee80211_local *local = wiphy_priv(wiphy); 1361 1362 *dbm = local->hw.conf.power_level; 1363 1364 return 0; 1365 } 1366 1367 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 1368 const u8 *addr) 1369 { 1370 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1371 1372 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 1373 1374 return 0; 1375 } 1376 1377 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 1378 { 1379 struct ieee80211_local *local = wiphy_priv(wiphy); 1380 1381 drv_rfkill_poll(local); 1382 } 1383 1384 #ifdef CONFIG_NL80211_TESTMODE 1385 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len) 1386 { 1387 struct ieee80211_local *local = wiphy_priv(wiphy); 1388 1389 if (!local->ops->testmode_cmd) 1390 return -EOPNOTSUPP; 1391 1392 return local->ops->testmode_cmd(&local->hw, data, len); 1393 } 1394 #endif 1395 1396 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1397 enum ieee80211_smps_mode smps_mode) 1398 { 1399 const u8 *ap; 1400 enum ieee80211_smps_mode old_req; 1401 int err; 1402 1403 old_req = sdata->u.mgd.req_smps; 1404 sdata->u.mgd.req_smps = smps_mode; 1405 1406 if (old_req == smps_mode && 1407 smps_mode != IEEE80211_SMPS_AUTOMATIC) 1408 return 0; 1409 1410 /* 1411 * If not associated, or current association is not an HT 1412 * association, there's no need to send an action frame. 1413 */ 1414 if (!sdata->u.mgd.associated || 1415 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) { 1416 mutex_lock(&sdata->local->iflist_mtx); 1417 ieee80211_recalc_smps(sdata->local); 1418 mutex_unlock(&sdata->local->iflist_mtx); 1419 return 0; 1420 } 1421 1422 ap = sdata->u.mgd.associated->bssid; 1423 1424 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 1425 if (sdata->u.mgd.powersave) 1426 smps_mode = IEEE80211_SMPS_DYNAMIC; 1427 else 1428 smps_mode = IEEE80211_SMPS_OFF; 1429 } 1430 1431 /* send SM PS frame to AP */ 1432 err = ieee80211_send_smps_action(sdata, smps_mode, 1433 ap, ap); 1434 if (err) 1435 sdata->u.mgd.req_smps = old_req; 1436 1437 return err; 1438 } 1439 1440 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 1441 bool enabled, int timeout) 1442 { 1443 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1444 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 1445 1446 if (sdata->vif.type != NL80211_IFTYPE_STATION) 1447 return -EOPNOTSUPP; 1448 1449 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 1450 return -EOPNOTSUPP; 1451 1452 if (enabled == sdata->u.mgd.powersave && 1453 timeout == local->dynamic_ps_forced_timeout) 1454 return 0; 1455 1456 sdata->u.mgd.powersave = enabled; 1457 local->dynamic_ps_forced_timeout = timeout; 1458 1459 /* no change, but if automatic follow powersave */ 1460 mutex_lock(&sdata->u.mgd.mtx); 1461 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps); 1462 mutex_unlock(&sdata->u.mgd.mtx); 1463 1464 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 1465 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 1466 1467 ieee80211_recalc_ps(local, -1); 1468 1469 return 0; 1470 } 1471 1472 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 1473 struct net_device *dev, 1474 s32 rssi_thold, u32 rssi_hyst) 1475 { 1476 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1477 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 1478 struct ieee80211_vif *vif = &sdata->vif; 1479 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 1480 1481 if (rssi_thold == bss_conf->cqm_rssi_thold && 1482 rssi_hyst == bss_conf->cqm_rssi_hyst) 1483 return 0; 1484 1485 bss_conf->cqm_rssi_thold = rssi_thold; 1486 bss_conf->cqm_rssi_hyst = rssi_hyst; 1487 1488 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) { 1489 if (sdata->vif.type != NL80211_IFTYPE_STATION) 1490 return -EOPNOTSUPP; 1491 return 0; 1492 } 1493 1494 /* tell the driver upon association, unless already associated */ 1495 if (sdata->u.mgd.associated) 1496 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 1497 1498 return 0; 1499 } 1500 1501 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 1502 struct net_device *dev, 1503 const u8 *addr, 1504 const struct cfg80211_bitrate_mask *mask) 1505 { 1506 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1507 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 1508 int i; 1509 1510 /* 1511 * This _could_ be supported by providing a hook for 1512 * drivers for this function, but at this point it 1513 * doesn't seem worth bothering. 1514 */ 1515 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) 1516 return -EOPNOTSUPP; 1517 1518 1519 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 1520 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 1521 1522 return 0; 1523 } 1524 1525 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 1526 struct net_device *dev, 1527 struct ieee80211_channel *chan, 1528 enum nl80211_channel_type channel_type, 1529 unsigned int duration, 1530 u64 *cookie) 1531 { 1532 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1533 1534 return ieee80211_wk_remain_on_channel(sdata, chan, channel_type, 1535 duration, cookie); 1536 } 1537 1538 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1539 struct net_device *dev, 1540 u64 cookie) 1541 { 1542 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1543 1544 return ieee80211_wk_cancel_remain_on_channel(sdata, cookie); 1545 } 1546 1547 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev, 1548 struct ieee80211_channel *chan, 1549 enum nl80211_channel_type channel_type, 1550 bool channel_type_valid, 1551 const u8 *buf, size_t len, u64 *cookie) 1552 { 1553 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1554 struct ieee80211_local *local = sdata->local; 1555 struct sk_buff *skb; 1556 struct sta_info *sta; 1557 const struct ieee80211_mgmt *mgmt = (void *)buf; 1558 u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 1559 IEEE80211_TX_CTL_REQ_TX_STATUS; 1560 1561 /* Check that we are on the requested channel for transmission */ 1562 if (chan != local->tmp_channel && 1563 chan != local->oper_channel) 1564 return -EBUSY; 1565 if (channel_type_valid && 1566 (channel_type != local->tmp_channel_type && 1567 channel_type != local->_oper_channel_type)) 1568 return -EBUSY; 1569 1570 switch (sdata->vif.type) { 1571 case NL80211_IFTYPE_ADHOC: 1572 case NL80211_IFTYPE_AP: 1573 case NL80211_IFTYPE_AP_VLAN: 1574 case NL80211_IFTYPE_P2P_GO: 1575 if (!ieee80211_is_action(mgmt->frame_control) || 1576 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) 1577 break; 1578 rcu_read_lock(); 1579 sta = sta_info_get(sdata, mgmt->da); 1580 rcu_read_unlock(); 1581 if (!sta) 1582 return -ENOLINK; 1583 break; 1584 case NL80211_IFTYPE_STATION: 1585 case NL80211_IFTYPE_P2P_CLIENT: 1586 break; 1587 default: 1588 return -EOPNOTSUPP; 1589 } 1590 1591 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); 1592 if (!skb) 1593 return -ENOMEM; 1594 skb_reserve(skb, local->hw.extra_tx_headroom); 1595 1596 memcpy(skb_put(skb, len), buf, len); 1597 1598 IEEE80211_SKB_CB(skb)->flags = flags; 1599 1600 skb->dev = sdata->dev; 1601 ieee80211_tx_skb(sdata, skb); 1602 1603 *cookie = (unsigned long) skb; 1604 return 0; 1605 } 1606 1607 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 1608 struct net_device *dev, 1609 u16 frame_type, bool reg) 1610 { 1611 struct ieee80211_local *local = wiphy_priv(wiphy); 1612 1613 if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ)) 1614 return; 1615 1616 if (reg) 1617 local->probe_req_reg++; 1618 else 1619 local->probe_req_reg--; 1620 1621 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 1622 } 1623 1624 struct cfg80211_ops mac80211_config_ops = { 1625 .add_virtual_intf = ieee80211_add_iface, 1626 .del_virtual_intf = ieee80211_del_iface, 1627 .change_virtual_intf = ieee80211_change_iface, 1628 .add_key = ieee80211_add_key, 1629 .del_key = ieee80211_del_key, 1630 .get_key = ieee80211_get_key, 1631 .set_default_key = ieee80211_config_default_key, 1632 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 1633 .add_beacon = ieee80211_add_beacon, 1634 .set_beacon = ieee80211_set_beacon, 1635 .del_beacon = ieee80211_del_beacon, 1636 .add_station = ieee80211_add_station, 1637 .del_station = ieee80211_del_station, 1638 .change_station = ieee80211_change_station, 1639 .get_station = ieee80211_get_station, 1640 .dump_station = ieee80211_dump_station, 1641 .dump_survey = ieee80211_dump_survey, 1642 #ifdef CONFIG_MAC80211_MESH 1643 .add_mpath = ieee80211_add_mpath, 1644 .del_mpath = ieee80211_del_mpath, 1645 .change_mpath = ieee80211_change_mpath, 1646 .get_mpath = ieee80211_get_mpath, 1647 .dump_mpath = ieee80211_dump_mpath, 1648 .set_mesh_params = ieee80211_set_mesh_params, 1649 .get_mesh_params = ieee80211_get_mesh_params, 1650 #endif 1651 .change_bss = ieee80211_change_bss, 1652 .set_txq_params = ieee80211_set_txq_params, 1653 .set_channel = ieee80211_set_channel, 1654 .suspend = ieee80211_suspend, 1655 .resume = ieee80211_resume, 1656 .scan = ieee80211_scan, 1657 .auth = ieee80211_auth, 1658 .assoc = ieee80211_assoc, 1659 .deauth = ieee80211_deauth, 1660 .disassoc = ieee80211_disassoc, 1661 .join_ibss = ieee80211_join_ibss, 1662 .leave_ibss = ieee80211_leave_ibss, 1663 .set_wiphy_params = ieee80211_set_wiphy_params, 1664 .set_tx_power = ieee80211_set_tx_power, 1665 .get_tx_power = ieee80211_get_tx_power, 1666 .set_wds_peer = ieee80211_set_wds_peer, 1667 .rfkill_poll = ieee80211_rfkill_poll, 1668 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 1669 .set_power_mgmt = ieee80211_set_power_mgmt, 1670 .set_bitrate_mask = ieee80211_set_bitrate_mask, 1671 .remain_on_channel = ieee80211_remain_on_channel, 1672 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 1673 .mgmt_tx = ieee80211_mgmt_tx, 1674 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 1675 .mgmt_frame_register = ieee80211_mgmt_frame_register, 1676 }; 1677