1 /* 2 * mac80211 configuration hooks for cfg80211 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * 6 * This file is GPLv2 as found in COPYING. 7 */ 8 9 #include <linux/ieee80211.h> 10 #include <linux/nl80211.h> 11 #include <linux/rtnetlink.h> 12 #include <linux/slab.h> 13 #include <net/net_namespace.h> 14 #include <linux/rcupdate.h> 15 #include <net/cfg80211.h> 16 #include "ieee80211_i.h" 17 #include "driver-ops.h" 18 #include "cfg.h" 19 #include "rate.h" 20 #include "mesh.h" 21 22 static bool nl80211_type_check(enum nl80211_iftype type) 23 { 24 switch (type) { 25 case NL80211_IFTYPE_ADHOC: 26 case NL80211_IFTYPE_STATION: 27 case NL80211_IFTYPE_MONITOR: 28 #ifdef CONFIG_MAC80211_MESH 29 case NL80211_IFTYPE_MESH_POINT: 30 #endif 31 case NL80211_IFTYPE_AP: 32 case NL80211_IFTYPE_AP_VLAN: 33 case NL80211_IFTYPE_WDS: 34 return true; 35 default: 36 return false; 37 } 38 } 39 40 static bool nl80211_params_check(enum nl80211_iftype type, 41 struct vif_params *params) 42 { 43 if (!nl80211_type_check(type)) 44 return false; 45 46 return true; 47 } 48 49 static int ieee80211_add_iface(struct wiphy *wiphy, char *name, 50 enum nl80211_iftype type, u32 *flags, 51 struct vif_params *params) 52 { 53 struct ieee80211_local *local = wiphy_priv(wiphy); 54 struct net_device *dev; 55 struct ieee80211_sub_if_data *sdata; 56 int err; 57 58 if (!nl80211_params_check(type, params)) 59 return -EINVAL; 60 61 err = ieee80211_if_add(local, name, &dev, type, params); 62 if (err || type != NL80211_IFTYPE_MONITOR || !flags) 63 return err; 64 65 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 66 sdata->u.mntr_flags = *flags; 67 return 0; 68 } 69 70 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev) 71 { 72 ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev)); 73 74 return 0; 75 } 76 77 static int ieee80211_change_iface(struct wiphy *wiphy, 78 struct net_device *dev, 79 enum nl80211_iftype type, u32 *flags, 80 struct vif_params *params) 81 { 82 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 83 int ret; 84 85 if (ieee80211_sdata_running(sdata)) 86 return -EBUSY; 87 88 if (!nl80211_params_check(type, params)) 89 return -EINVAL; 90 91 ret = ieee80211_if_change_type(sdata, type); 92 if (ret) 93 return ret; 94 95 if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len) 96 ieee80211_sdata_set_mesh_id(sdata, 97 params->mesh_id_len, 98 params->mesh_id); 99 100 if (type == NL80211_IFTYPE_AP_VLAN && 101 params && params->use_4addr == 0) 102 rcu_assign_pointer(sdata->u.vlan.sta, NULL); 103 else if (type == NL80211_IFTYPE_STATION && 104 params && params->use_4addr >= 0) 105 sdata->u.mgd.use_4addr = params->use_4addr; 106 107 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) 108 sdata->u.mntr_flags = *flags; 109 110 return 0; 111 } 112 113 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 114 u8 key_idx, const u8 *mac_addr, 115 struct key_params *params) 116 { 117 struct ieee80211_sub_if_data *sdata; 118 struct sta_info *sta = NULL; 119 enum ieee80211_key_alg alg; 120 struct ieee80211_key *key; 121 int err; 122 123 if (!netif_running(dev)) 124 return -ENETDOWN; 125 126 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 127 128 switch (params->cipher) { 129 case WLAN_CIPHER_SUITE_WEP40: 130 case WLAN_CIPHER_SUITE_WEP104: 131 alg = ALG_WEP; 132 break; 133 case WLAN_CIPHER_SUITE_TKIP: 134 alg = ALG_TKIP; 135 break; 136 case WLAN_CIPHER_SUITE_CCMP: 137 alg = ALG_CCMP; 138 break; 139 case WLAN_CIPHER_SUITE_AES_CMAC: 140 alg = ALG_AES_CMAC; 141 break; 142 default: 143 return -EINVAL; 144 } 145 146 /* reject WEP and TKIP keys if WEP failed to initialize */ 147 if ((alg == ALG_WEP || alg == ALG_TKIP) && 148 IS_ERR(sdata->local->wep_tx_tfm)) 149 return -EINVAL; 150 151 key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key, 152 params->seq_len, params->seq); 153 if (!key) 154 return -ENOMEM; 155 156 mutex_lock(&sdata->local->sta_mtx); 157 158 if (mac_addr) { 159 sta = sta_info_get_bss(sdata, mac_addr); 160 if (!sta) { 161 ieee80211_key_free(sdata->local, key); 162 err = -ENOENT; 163 goto out_unlock; 164 } 165 } 166 167 ieee80211_key_link(key, sdata, sta); 168 169 err = 0; 170 out_unlock: 171 mutex_unlock(&sdata->local->sta_mtx); 172 173 return err; 174 } 175 176 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 177 u8 key_idx, const u8 *mac_addr) 178 { 179 struct ieee80211_sub_if_data *sdata; 180 struct sta_info *sta; 181 int ret; 182 183 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 184 185 mutex_lock(&sdata->local->sta_mtx); 186 187 if (mac_addr) { 188 ret = -ENOENT; 189 190 sta = sta_info_get_bss(sdata, mac_addr); 191 if (!sta) 192 goto out_unlock; 193 194 if (sta->key) { 195 ieee80211_key_free(sdata->local, sta->key); 196 WARN_ON(sta->key); 197 ret = 0; 198 } 199 200 goto out_unlock; 201 } 202 203 if (!sdata->keys[key_idx]) { 204 ret = -ENOENT; 205 goto out_unlock; 206 } 207 208 ieee80211_key_free(sdata->local, sdata->keys[key_idx]); 209 WARN_ON(sdata->keys[key_idx]); 210 211 ret = 0; 212 out_unlock: 213 mutex_unlock(&sdata->local->sta_mtx); 214 215 return ret; 216 } 217 218 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 219 u8 key_idx, const u8 *mac_addr, void *cookie, 220 void (*callback)(void *cookie, 221 struct key_params *params)) 222 { 223 struct ieee80211_sub_if_data *sdata; 224 struct sta_info *sta = NULL; 225 u8 seq[6] = {0}; 226 struct key_params params; 227 struct ieee80211_key *key; 228 u32 iv32; 229 u16 iv16; 230 int err = -ENOENT; 231 232 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 233 234 rcu_read_lock(); 235 236 if (mac_addr) { 237 sta = sta_info_get_bss(sdata, mac_addr); 238 if (!sta) 239 goto out; 240 241 key = sta->key; 242 } else 243 key = sdata->keys[key_idx]; 244 245 if (!key) 246 goto out; 247 248 memset(¶ms, 0, sizeof(params)); 249 250 switch (key->conf.alg) { 251 case ALG_TKIP: 252 params.cipher = WLAN_CIPHER_SUITE_TKIP; 253 254 iv32 = key->u.tkip.tx.iv32; 255 iv16 = key->u.tkip.tx.iv16; 256 257 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 258 drv_get_tkip_seq(sdata->local, 259 key->conf.hw_key_idx, 260 &iv32, &iv16); 261 262 seq[0] = iv16 & 0xff; 263 seq[1] = (iv16 >> 8) & 0xff; 264 seq[2] = iv32 & 0xff; 265 seq[3] = (iv32 >> 8) & 0xff; 266 seq[4] = (iv32 >> 16) & 0xff; 267 seq[5] = (iv32 >> 24) & 0xff; 268 params.seq = seq; 269 params.seq_len = 6; 270 break; 271 case ALG_CCMP: 272 params.cipher = WLAN_CIPHER_SUITE_CCMP; 273 seq[0] = key->u.ccmp.tx_pn[5]; 274 seq[1] = key->u.ccmp.tx_pn[4]; 275 seq[2] = key->u.ccmp.tx_pn[3]; 276 seq[3] = key->u.ccmp.tx_pn[2]; 277 seq[4] = key->u.ccmp.tx_pn[1]; 278 seq[5] = key->u.ccmp.tx_pn[0]; 279 params.seq = seq; 280 params.seq_len = 6; 281 break; 282 case ALG_WEP: 283 if (key->conf.keylen == 5) 284 params.cipher = WLAN_CIPHER_SUITE_WEP40; 285 else 286 params.cipher = WLAN_CIPHER_SUITE_WEP104; 287 break; 288 case ALG_AES_CMAC: 289 params.cipher = WLAN_CIPHER_SUITE_AES_CMAC; 290 seq[0] = key->u.aes_cmac.tx_pn[5]; 291 seq[1] = key->u.aes_cmac.tx_pn[4]; 292 seq[2] = key->u.aes_cmac.tx_pn[3]; 293 seq[3] = key->u.aes_cmac.tx_pn[2]; 294 seq[4] = key->u.aes_cmac.tx_pn[1]; 295 seq[5] = key->u.aes_cmac.tx_pn[0]; 296 params.seq = seq; 297 params.seq_len = 6; 298 break; 299 } 300 301 params.key = key->conf.key; 302 params.key_len = key->conf.keylen; 303 304 callback(cookie, ¶ms); 305 err = 0; 306 307 out: 308 rcu_read_unlock(); 309 return err; 310 } 311 312 static int ieee80211_config_default_key(struct wiphy *wiphy, 313 struct net_device *dev, 314 u8 key_idx) 315 { 316 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 317 318 ieee80211_set_default_key(sdata, key_idx); 319 320 return 0; 321 } 322 323 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 324 struct net_device *dev, 325 u8 key_idx) 326 { 327 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 328 329 ieee80211_set_default_mgmt_key(sdata, key_idx); 330 331 return 0; 332 } 333 334 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 335 { 336 struct ieee80211_sub_if_data *sdata = sta->sdata; 337 338 sinfo->generation = sdata->local->sta_generation; 339 340 sinfo->filled = STATION_INFO_INACTIVE_TIME | 341 STATION_INFO_RX_BYTES | 342 STATION_INFO_TX_BYTES | 343 STATION_INFO_RX_PACKETS | 344 STATION_INFO_TX_PACKETS | 345 STATION_INFO_TX_BITRATE; 346 347 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); 348 sinfo->rx_bytes = sta->rx_bytes; 349 sinfo->tx_bytes = sta->tx_bytes; 350 sinfo->rx_packets = sta->rx_packets; 351 sinfo->tx_packets = sta->tx_packets; 352 353 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || 354 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { 355 sinfo->filled |= STATION_INFO_SIGNAL; 356 sinfo->signal = (s8)sta->last_signal; 357 } 358 359 sinfo->txrate.flags = 0; 360 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS) 361 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS; 362 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 363 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 364 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI) 365 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 366 367 if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) { 368 struct ieee80211_supported_band *sband; 369 sband = sta->local->hw.wiphy->bands[ 370 sta->local->hw.conf.channel->band]; 371 sinfo->txrate.legacy = 372 sband->bitrates[sta->last_tx_rate.idx].bitrate; 373 } else 374 sinfo->txrate.mcs = sta->last_tx_rate.idx; 375 376 if (ieee80211_vif_is_mesh(&sdata->vif)) { 377 #ifdef CONFIG_MAC80211_MESH 378 sinfo->filled |= STATION_INFO_LLID | 379 STATION_INFO_PLID | 380 STATION_INFO_PLINK_STATE; 381 382 sinfo->llid = le16_to_cpu(sta->llid); 383 sinfo->plid = le16_to_cpu(sta->plid); 384 sinfo->plink_state = sta->plink_state; 385 #endif 386 } 387 } 388 389 390 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 391 int idx, u8 *mac, struct station_info *sinfo) 392 { 393 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 394 struct sta_info *sta; 395 int ret = -ENOENT; 396 397 rcu_read_lock(); 398 399 sta = sta_info_get_by_idx(sdata, idx); 400 if (sta) { 401 ret = 0; 402 memcpy(mac, sta->sta.addr, ETH_ALEN); 403 sta_set_sinfo(sta, sinfo); 404 } 405 406 rcu_read_unlock(); 407 408 return ret; 409 } 410 411 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 412 int idx, struct survey_info *survey) 413 { 414 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 415 416 return drv_get_survey(local, idx, survey); 417 } 418 419 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 420 u8 *mac, struct station_info *sinfo) 421 { 422 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 423 struct sta_info *sta; 424 int ret = -ENOENT; 425 426 rcu_read_lock(); 427 428 sta = sta_info_get_bss(sdata, mac); 429 if (sta) { 430 ret = 0; 431 sta_set_sinfo(sta, sinfo); 432 } 433 434 rcu_read_unlock(); 435 436 return ret; 437 } 438 439 /* 440 * This handles both adding a beacon and setting new beacon info 441 */ 442 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, 443 struct beacon_parameters *params) 444 { 445 struct beacon_data *new, *old; 446 int new_head_len, new_tail_len; 447 int size; 448 int err = -EINVAL; 449 450 old = sdata->u.ap.beacon; 451 452 /* head must not be zero-length */ 453 if (params->head && !params->head_len) 454 return -EINVAL; 455 456 /* 457 * This is a kludge. beacon interval should really be part 458 * of the beacon information. 459 */ 460 if (params->interval && 461 (sdata->vif.bss_conf.beacon_int != params->interval)) { 462 sdata->vif.bss_conf.beacon_int = params->interval; 463 ieee80211_bss_info_change_notify(sdata, 464 BSS_CHANGED_BEACON_INT); 465 } 466 467 /* Need to have a beacon head if we don't have one yet */ 468 if (!params->head && !old) 469 return err; 470 471 /* sorry, no way to start beaconing without dtim period */ 472 if (!params->dtim_period && !old) 473 return err; 474 475 /* new or old head? */ 476 if (params->head) 477 new_head_len = params->head_len; 478 else 479 new_head_len = old->head_len; 480 481 /* new or old tail? */ 482 if (params->tail || !old) 483 /* params->tail_len will be zero for !params->tail */ 484 new_tail_len = params->tail_len; 485 else 486 new_tail_len = old->tail_len; 487 488 size = sizeof(*new) + new_head_len + new_tail_len; 489 490 new = kzalloc(size, GFP_KERNEL); 491 if (!new) 492 return -ENOMEM; 493 494 /* start filling the new info now */ 495 496 /* new or old dtim period? */ 497 if (params->dtim_period) 498 new->dtim_period = params->dtim_period; 499 else 500 new->dtim_period = old->dtim_period; 501 502 /* 503 * pointers go into the block we allocated, 504 * memory is | beacon_data | head | tail | 505 */ 506 new->head = ((u8 *) new) + sizeof(*new); 507 new->tail = new->head + new_head_len; 508 new->head_len = new_head_len; 509 new->tail_len = new_tail_len; 510 511 /* copy in head */ 512 if (params->head) 513 memcpy(new->head, params->head, new_head_len); 514 else 515 memcpy(new->head, old->head, new_head_len); 516 517 /* copy in optional tail */ 518 if (params->tail) 519 memcpy(new->tail, params->tail, new_tail_len); 520 else 521 if (old) 522 memcpy(new->tail, old->tail, new_tail_len); 523 524 sdata->vif.bss_conf.dtim_period = new->dtim_period; 525 526 rcu_assign_pointer(sdata->u.ap.beacon, new); 527 528 synchronize_rcu(); 529 530 kfree(old); 531 532 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED | 533 BSS_CHANGED_BEACON); 534 return 0; 535 } 536 537 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev, 538 struct beacon_parameters *params) 539 { 540 struct ieee80211_sub_if_data *sdata; 541 struct beacon_data *old; 542 543 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 544 545 old = sdata->u.ap.beacon; 546 547 if (old) 548 return -EALREADY; 549 550 return ieee80211_config_beacon(sdata, params); 551 } 552 553 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev, 554 struct beacon_parameters *params) 555 { 556 struct ieee80211_sub_if_data *sdata; 557 struct beacon_data *old; 558 559 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 560 561 old = sdata->u.ap.beacon; 562 563 if (!old) 564 return -ENOENT; 565 566 return ieee80211_config_beacon(sdata, params); 567 } 568 569 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev) 570 { 571 struct ieee80211_sub_if_data *sdata; 572 struct beacon_data *old; 573 574 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 575 576 old = sdata->u.ap.beacon; 577 578 if (!old) 579 return -ENOENT; 580 581 rcu_assign_pointer(sdata->u.ap.beacon, NULL); 582 synchronize_rcu(); 583 kfree(old); 584 585 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 586 return 0; 587 } 588 589 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 590 struct iapp_layer2_update { 591 u8 da[ETH_ALEN]; /* broadcast */ 592 u8 sa[ETH_ALEN]; /* STA addr */ 593 __be16 len; /* 6 */ 594 u8 dsap; /* 0 */ 595 u8 ssap; /* 0 */ 596 u8 control; 597 u8 xid_info[3]; 598 } __packed; 599 600 static void ieee80211_send_layer2_update(struct sta_info *sta) 601 { 602 struct iapp_layer2_update *msg; 603 struct sk_buff *skb; 604 605 /* Send Level 2 Update Frame to update forwarding tables in layer 2 606 * bridge devices */ 607 608 skb = dev_alloc_skb(sizeof(*msg)); 609 if (!skb) 610 return; 611 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 612 613 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 614 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 615 616 memset(msg->da, 0xff, ETH_ALEN); 617 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 618 msg->len = htons(6); 619 msg->dsap = 0; 620 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 621 msg->control = 0xaf; /* XID response lsb.1111F101. 622 * F=0 (no poll command; unsolicited frame) */ 623 msg->xid_info[0] = 0x81; /* XID format identifier */ 624 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 625 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 626 627 skb->dev = sta->sdata->dev; 628 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 629 memset(skb->cb, 0, sizeof(skb->cb)); 630 netif_rx_ni(skb); 631 } 632 633 static void sta_apply_parameters(struct ieee80211_local *local, 634 struct sta_info *sta, 635 struct station_parameters *params) 636 { 637 u32 rates; 638 int i, j; 639 struct ieee80211_supported_band *sband; 640 struct ieee80211_sub_if_data *sdata = sta->sdata; 641 u32 mask, set; 642 643 sband = local->hw.wiphy->bands[local->oper_channel->band]; 644 645 spin_lock_bh(&sta->lock); 646 mask = params->sta_flags_mask; 647 set = params->sta_flags_set; 648 649 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 650 sta->flags &= ~WLAN_STA_AUTHORIZED; 651 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 652 sta->flags |= WLAN_STA_AUTHORIZED; 653 } 654 655 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 656 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE; 657 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 658 sta->flags |= WLAN_STA_SHORT_PREAMBLE; 659 } 660 661 if (mask & BIT(NL80211_STA_FLAG_WME)) { 662 sta->flags &= ~WLAN_STA_WME; 663 if (set & BIT(NL80211_STA_FLAG_WME)) 664 sta->flags |= WLAN_STA_WME; 665 } 666 667 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 668 sta->flags &= ~WLAN_STA_MFP; 669 if (set & BIT(NL80211_STA_FLAG_MFP)) 670 sta->flags |= WLAN_STA_MFP; 671 } 672 spin_unlock_bh(&sta->lock); 673 674 /* 675 * cfg80211 validates this (1-2007) and allows setting the AID 676 * only when creating a new station entry 677 */ 678 if (params->aid) 679 sta->sta.aid = params->aid; 680 681 /* 682 * FIXME: updating the following information is racy when this 683 * function is called from ieee80211_change_station(). 684 * However, all this information should be static so 685 * maybe we should just reject attemps to change it. 686 */ 687 688 if (params->listen_interval >= 0) 689 sta->listen_interval = params->listen_interval; 690 691 if (params->supported_rates) { 692 rates = 0; 693 694 for (i = 0; i < params->supported_rates_len; i++) { 695 int rate = (params->supported_rates[i] & 0x7f) * 5; 696 for (j = 0; j < sband->n_bitrates; j++) { 697 if (sband->bitrates[j].bitrate == rate) 698 rates |= BIT(j); 699 } 700 } 701 sta->sta.supp_rates[local->oper_channel->band] = rates; 702 } 703 704 if (params->ht_capa) 705 ieee80211_ht_cap_ie_to_sta_ht_cap(sband, 706 params->ht_capa, 707 &sta->sta.ht_cap); 708 709 if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) { 710 switch (params->plink_action) { 711 case PLINK_ACTION_OPEN: 712 mesh_plink_open(sta); 713 break; 714 case PLINK_ACTION_BLOCK: 715 mesh_plink_block(sta); 716 break; 717 } 718 } 719 } 720 721 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 722 u8 *mac, struct station_parameters *params) 723 { 724 struct ieee80211_local *local = wiphy_priv(wiphy); 725 struct sta_info *sta; 726 struct ieee80211_sub_if_data *sdata; 727 int err; 728 int layer2_update; 729 730 if (params->vlan) { 731 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 732 733 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 734 sdata->vif.type != NL80211_IFTYPE_AP) 735 return -EINVAL; 736 } else 737 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 738 739 if (compare_ether_addr(mac, sdata->vif.addr) == 0) 740 return -EINVAL; 741 742 if (is_multicast_ether_addr(mac)) 743 return -EINVAL; 744 745 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 746 if (!sta) 747 return -ENOMEM; 748 749 sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; 750 751 sta_apply_parameters(local, sta, params); 752 753 rate_control_rate_init(sta); 754 755 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 756 sdata->vif.type == NL80211_IFTYPE_AP; 757 758 err = sta_info_insert_rcu(sta); 759 if (err) { 760 rcu_read_unlock(); 761 return err; 762 } 763 764 if (layer2_update) 765 ieee80211_send_layer2_update(sta); 766 767 rcu_read_unlock(); 768 769 return 0; 770 } 771 772 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 773 u8 *mac) 774 { 775 struct ieee80211_local *local = wiphy_priv(wiphy); 776 struct ieee80211_sub_if_data *sdata; 777 778 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 779 780 if (mac) 781 return sta_info_destroy_addr_bss(sdata, mac); 782 783 sta_info_flush(local, sdata); 784 return 0; 785 } 786 787 static int ieee80211_change_station(struct wiphy *wiphy, 788 struct net_device *dev, 789 u8 *mac, 790 struct station_parameters *params) 791 { 792 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 793 struct ieee80211_local *local = wiphy_priv(wiphy); 794 struct sta_info *sta; 795 struct ieee80211_sub_if_data *vlansdata; 796 797 rcu_read_lock(); 798 799 sta = sta_info_get_bss(sdata, mac); 800 if (!sta) { 801 rcu_read_unlock(); 802 return -ENOENT; 803 } 804 805 if (params->vlan && params->vlan != sta->sdata->dev) { 806 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 807 808 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN && 809 vlansdata->vif.type != NL80211_IFTYPE_AP) { 810 rcu_read_unlock(); 811 return -EINVAL; 812 } 813 814 if (params->vlan->ieee80211_ptr->use_4addr) { 815 if (vlansdata->u.vlan.sta) { 816 rcu_read_unlock(); 817 return -EBUSY; 818 } 819 820 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 821 } 822 823 sta->sdata = vlansdata; 824 ieee80211_send_layer2_update(sta); 825 } 826 827 sta_apply_parameters(local, sta, params); 828 829 rcu_read_unlock(); 830 831 return 0; 832 } 833 834 #ifdef CONFIG_MAC80211_MESH 835 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 836 u8 *dst, u8 *next_hop) 837 { 838 struct ieee80211_sub_if_data *sdata; 839 struct mesh_path *mpath; 840 struct sta_info *sta; 841 int err; 842 843 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 844 845 rcu_read_lock(); 846 sta = sta_info_get(sdata, next_hop); 847 if (!sta) { 848 rcu_read_unlock(); 849 return -ENOENT; 850 } 851 852 err = mesh_path_add(dst, sdata); 853 if (err) { 854 rcu_read_unlock(); 855 return err; 856 } 857 858 mpath = mesh_path_lookup(dst, sdata); 859 if (!mpath) { 860 rcu_read_unlock(); 861 return -ENXIO; 862 } 863 mesh_path_fix_nexthop(mpath, sta); 864 865 rcu_read_unlock(); 866 return 0; 867 } 868 869 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 870 u8 *dst) 871 { 872 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 873 874 if (dst) 875 return mesh_path_del(dst, sdata); 876 877 mesh_path_flush(sdata); 878 return 0; 879 } 880 881 static int ieee80211_change_mpath(struct wiphy *wiphy, 882 struct net_device *dev, 883 u8 *dst, u8 *next_hop) 884 { 885 struct ieee80211_sub_if_data *sdata; 886 struct mesh_path *mpath; 887 struct sta_info *sta; 888 889 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 890 891 rcu_read_lock(); 892 893 sta = sta_info_get(sdata, next_hop); 894 if (!sta) { 895 rcu_read_unlock(); 896 return -ENOENT; 897 } 898 899 mpath = mesh_path_lookup(dst, sdata); 900 if (!mpath) { 901 rcu_read_unlock(); 902 return -ENOENT; 903 } 904 905 mesh_path_fix_nexthop(mpath, sta); 906 907 rcu_read_unlock(); 908 return 0; 909 } 910 911 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 912 struct mpath_info *pinfo) 913 { 914 if (mpath->next_hop) 915 memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN); 916 else 917 memset(next_hop, 0, ETH_ALEN); 918 919 pinfo->generation = mesh_paths_generation; 920 921 pinfo->filled = MPATH_INFO_FRAME_QLEN | 922 MPATH_INFO_SN | 923 MPATH_INFO_METRIC | 924 MPATH_INFO_EXPTIME | 925 MPATH_INFO_DISCOVERY_TIMEOUT | 926 MPATH_INFO_DISCOVERY_RETRIES | 927 MPATH_INFO_FLAGS; 928 929 pinfo->frame_qlen = mpath->frame_queue.qlen; 930 pinfo->sn = mpath->sn; 931 pinfo->metric = mpath->metric; 932 if (time_before(jiffies, mpath->exp_time)) 933 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 934 pinfo->discovery_timeout = 935 jiffies_to_msecs(mpath->discovery_timeout); 936 pinfo->discovery_retries = mpath->discovery_retries; 937 pinfo->flags = 0; 938 if (mpath->flags & MESH_PATH_ACTIVE) 939 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 940 if (mpath->flags & MESH_PATH_RESOLVING) 941 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 942 if (mpath->flags & MESH_PATH_SN_VALID) 943 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 944 if (mpath->flags & MESH_PATH_FIXED) 945 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 946 if (mpath->flags & MESH_PATH_RESOLVING) 947 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 948 949 pinfo->flags = mpath->flags; 950 } 951 952 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 953 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 954 955 { 956 struct ieee80211_sub_if_data *sdata; 957 struct mesh_path *mpath; 958 959 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 960 961 rcu_read_lock(); 962 mpath = mesh_path_lookup(dst, sdata); 963 if (!mpath) { 964 rcu_read_unlock(); 965 return -ENOENT; 966 } 967 memcpy(dst, mpath->dst, ETH_ALEN); 968 mpath_set_pinfo(mpath, next_hop, pinfo); 969 rcu_read_unlock(); 970 return 0; 971 } 972 973 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 974 int idx, u8 *dst, u8 *next_hop, 975 struct mpath_info *pinfo) 976 { 977 struct ieee80211_sub_if_data *sdata; 978 struct mesh_path *mpath; 979 980 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 981 982 rcu_read_lock(); 983 mpath = mesh_path_lookup_by_idx(idx, sdata); 984 if (!mpath) { 985 rcu_read_unlock(); 986 return -ENOENT; 987 } 988 memcpy(dst, mpath->dst, ETH_ALEN); 989 mpath_set_pinfo(mpath, next_hop, pinfo); 990 rcu_read_unlock(); 991 return 0; 992 } 993 994 static int ieee80211_get_mesh_params(struct wiphy *wiphy, 995 struct net_device *dev, 996 struct mesh_config *conf) 997 { 998 struct ieee80211_sub_if_data *sdata; 999 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1000 1001 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1002 return 0; 1003 } 1004 1005 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1006 { 1007 return (mask >> (parm-1)) & 0x1; 1008 } 1009 1010 static int ieee80211_set_mesh_params(struct wiphy *wiphy, 1011 struct net_device *dev, 1012 const struct mesh_config *nconf, u32 mask) 1013 { 1014 struct mesh_config *conf; 1015 struct ieee80211_sub_if_data *sdata; 1016 struct ieee80211_if_mesh *ifmsh; 1017 1018 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1019 ifmsh = &sdata->u.mesh; 1020 1021 /* Set the config options which we are interested in setting */ 1022 conf = &(sdata->u.mesh.mshcfg); 1023 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1024 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1025 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1026 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1027 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1028 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1029 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1030 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1031 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1032 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1033 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1034 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1035 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) 1036 conf->auto_open_plinks = nconf->auto_open_plinks; 1037 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1038 conf->dot11MeshHWMPmaxPREQretries = 1039 nconf->dot11MeshHWMPmaxPREQretries; 1040 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1041 conf->path_refresh_time = nconf->path_refresh_time; 1042 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1043 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1044 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1045 conf->dot11MeshHWMPactivePathTimeout = 1046 nconf->dot11MeshHWMPactivePathTimeout; 1047 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1048 conf->dot11MeshHWMPpreqMinInterval = 1049 nconf->dot11MeshHWMPpreqMinInterval; 1050 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1051 mask)) 1052 conf->dot11MeshHWMPnetDiameterTraversalTime = 1053 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1054 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1055 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1056 ieee80211_mesh_root_setup(ifmsh); 1057 } 1058 return 0; 1059 } 1060 1061 #endif 1062 1063 static int ieee80211_change_bss(struct wiphy *wiphy, 1064 struct net_device *dev, 1065 struct bss_parameters *params) 1066 { 1067 struct ieee80211_sub_if_data *sdata; 1068 u32 changed = 0; 1069 1070 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1071 1072 if (params->use_cts_prot >= 0) { 1073 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1074 changed |= BSS_CHANGED_ERP_CTS_PROT; 1075 } 1076 if (params->use_short_preamble >= 0) { 1077 sdata->vif.bss_conf.use_short_preamble = 1078 params->use_short_preamble; 1079 changed |= BSS_CHANGED_ERP_PREAMBLE; 1080 } 1081 1082 if (!sdata->vif.bss_conf.use_short_slot && 1083 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) { 1084 sdata->vif.bss_conf.use_short_slot = true; 1085 changed |= BSS_CHANGED_ERP_SLOT; 1086 } 1087 1088 if (params->use_short_slot_time >= 0) { 1089 sdata->vif.bss_conf.use_short_slot = 1090 params->use_short_slot_time; 1091 changed |= BSS_CHANGED_ERP_SLOT; 1092 } 1093 1094 if (params->basic_rates) { 1095 int i, j; 1096 u32 rates = 0; 1097 struct ieee80211_local *local = wiphy_priv(wiphy); 1098 struct ieee80211_supported_band *sband = 1099 wiphy->bands[local->oper_channel->band]; 1100 1101 for (i = 0; i < params->basic_rates_len; i++) { 1102 int rate = (params->basic_rates[i] & 0x7f) * 5; 1103 for (j = 0; j < sband->n_bitrates; j++) { 1104 if (sband->bitrates[j].bitrate == rate) 1105 rates |= BIT(j); 1106 } 1107 } 1108 sdata->vif.bss_conf.basic_rates = rates; 1109 changed |= BSS_CHANGED_BASIC_RATES; 1110 } 1111 1112 if (params->ap_isolate >= 0) { 1113 if (params->ap_isolate) 1114 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1115 else 1116 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1117 } 1118 1119 ieee80211_bss_info_change_notify(sdata, changed); 1120 1121 return 0; 1122 } 1123 1124 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1125 struct ieee80211_txq_params *params) 1126 { 1127 struct ieee80211_local *local = wiphy_priv(wiphy); 1128 struct ieee80211_tx_queue_params p; 1129 1130 if (!local->ops->conf_tx) 1131 return -EOPNOTSUPP; 1132 1133 memset(&p, 0, sizeof(p)); 1134 p.aifs = params->aifs; 1135 p.cw_max = params->cwmax; 1136 p.cw_min = params->cwmin; 1137 p.txop = params->txop; 1138 1139 /* 1140 * Setting tx queue params disables u-apsd because it's only 1141 * called in master mode. 1142 */ 1143 p.uapsd = false; 1144 1145 if (drv_conf_tx(local, params->queue, &p)) { 1146 printk(KERN_DEBUG "%s: failed to set TX queue " 1147 "parameters for queue %d\n", 1148 wiphy_name(local->hw.wiphy), params->queue); 1149 return -EINVAL; 1150 } 1151 1152 return 0; 1153 } 1154 1155 static int ieee80211_set_channel(struct wiphy *wiphy, 1156 struct net_device *netdev, 1157 struct ieee80211_channel *chan, 1158 enum nl80211_channel_type channel_type) 1159 { 1160 struct ieee80211_local *local = wiphy_priv(wiphy); 1161 struct ieee80211_sub_if_data *sdata = NULL; 1162 1163 if (netdev) 1164 sdata = IEEE80211_DEV_TO_SUB_IF(netdev); 1165 1166 switch (ieee80211_get_channel_mode(local, NULL)) { 1167 case CHAN_MODE_HOPPING: 1168 return -EBUSY; 1169 case CHAN_MODE_FIXED: 1170 if (local->oper_channel != chan) 1171 return -EBUSY; 1172 if (!sdata && local->_oper_channel_type == channel_type) 1173 return 0; 1174 break; 1175 case CHAN_MODE_UNDEFINED: 1176 break; 1177 } 1178 1179 local->oper_channel = chan; 1180 1181 if (!ieee80211_set_channel_type(local, sdata, channel_type)) 1182 return -EBUSY; 1183 1184 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); 1185 if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR) 1186 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1187 1188 return 0; 1189 } 1190 1191 #ifdef CONFIG_PM 1192 static int ieee80211_suspend(struct wiphy *wiphy) 1193 { 1194 return __ieee80211_suspend(wiphy_priv(wiphy)); 1195 } 1196 1197 static int ieee80211_resume(struct wiphy *wiphy) 1198 { 1199 return __ieee80211_resume(wiphy_priv(wiphy)); 1200 } 1201 #else 1202 #define ieee80211_suspend NULL 1203 #define ieee80211_resume NULL 1204 #endif 1205 1206 static int ieee80211_scan(struct wiphy *wiphy, 1207 struct net_device *dev, 1208 struct cfg80211_scan_request *req) 1209 { 1210 struct ieee80211_sub_if_data *sdata; 1211 1212 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1213 1214 if (sdata->vif.type != NL80211_IFTYPE_STATION && 1215 sdata->vif.type != NL80211_IFTYPE_ADHOC && 1216 sdata->vif.type != NL80211_IFTYPE_MESH_POINT && 1217 (sdata->vif.type != NL80211_IFTYPE_AP || sdata->u.ap.beacon)) 1218 return -EOPNOTSUPP; 1219 1220 return ieee80211_request_scan(sdata, req); 1221 } 1222 1223 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 1224 struct cfg80211_auth_request *req) 1225 { 1226 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 1227 } 1228 1229 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 1230 struct cfg80211_assoc_request *req) 1231 { 1232 struct ieee80211_local *local = wiphy_priv(wiphy); 1233 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1234 1235 switch (ieee80211_get_channel_mode(local, sdata)) { 1236 case CHAN_MODE_HOPPING: 1237 return -EBUSY; 1238 case CHAN_MODE_FIXED: 1239 if (local->oper_channel == req->bss->channel) 1240 break; 1241 return -EBUSY; 1242 case CHAN_MODE_UNDEFINED: 1243 break; 1244 } 1245 1246 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 1247 } 1248 1249 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 1250 struct cfg80211_deauth_request *req, 1251 void *cookie) 1252 { 1253 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), 1254 req, cookie); 1255 } 1256 1257 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 1258 struct cfg80211_disassoc_request *req, 1259 void *cookie) 1260 { 1261 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), 1262 req, cookie); 1263 } 1264 1265 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 1266 struct cfg80211_ibss_params *params) 1267 { 1268 struct ieee80211_local *local = wiphy_priv(wiphy); 1269 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1270 1271 switch (ieee80211_get_channel_mode(local, sdata)) { 1272 case CHAN_MODE_HOPPING: 1273 return -EBUSY; 1274 case CHAN_MODE_FIXED: 1275 if (!params->channel_fixed) 1276 return -EBUSY; 1277 if (local->oper_channel == params->channel) 1278 break; 1279 return -EBUSY; 1280 case CHAN_MODE_UNDEFINED: 1281 break; 1282 } 1283 1284 return ieee80211_ibss_join(sdata, params); 1285 } 1286 1287 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 1288 { 1289 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1290 1291 return ieee80211_ibss_leave(sdata); 1292 } 1293 1294 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 1295 { 1296 struct ieee80211_local *local = wiphy_priv(wiphy); 1297 int err; 1298 1299 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 1300 err = drv_set_coverage_class(local, wiphy->coverage_class); 1301 1302 if (err) 1303 return err; 1304 } 1305 1306 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 1307 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 1308 1309 if (err) 1310 return err; 1311 } 1312 1313 if (changed & WIPHY_PARAM_RETRY_SHORT) 1314 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 1315 if (changed & WIPHY_PARAM_RETRY_LONG) 1316 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 1317 if (changed & 1318 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 1319 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 1320 1321 return 0; 1322 } 1323 1324 static int ieee80211_set_tx_power(struct wiphy *wiphy, 1325 enum nl80211_tx_power_setting type, int mbm) 1326 { 1327 struct ieee80211_local *local = wiphy_priv(wiphy); 1328 struct ieee80211_channel *chan = local->hw.conf.channel; 1329 u32 changes = 0; 1330 1331 switch (type) { 1332 case NL80211_TX_POWER_AUTOMATIC: 1333 local->user_power_level = -1; 1334 break; 1335 case NL80211_TX_POWER_LIMITED: 1336 if (mbm < 0 || (mbm % 100)) 1337 return -EOPNOTSUPP; 1338 local->user_power_level = MBM_TO_DBM(mbm); 1339 break; 1340 case NL80211_TX_POWER_FIXED: 1341 if (mbm < 0 || (mbm % 100)) 1342 return -EOPNOTSUPP; 1343 /* TODO: move to cfg80211 when it knows the channel */ 1344 if (MBM_TO_DBM(mbm) > chan->max_power) 1345 return -EINVAL; 1346 local->user_power_level = MBM_TO_DBM(mbm); 1347 break; 1348 } 1349 1350 ieee80211_hw_config(local, changes); 1351 1352 return 0; 1353 } 1354 1355 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm) 1356 { 1357 struct ieee80211_local *local = wiphy_priv(wiphy); 1358 1359 *dbm = local->hw.conf.power_level; 1360 1361 return 0; 1362 } 1363 1364 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 1365 u8 *addr) 1366 { 1367 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1368 1369 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 1370 1371 return 0; 1372 } 1373 1374 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 1375 { 1376 struct ieee80211_local *local = wiphy_priv(wiphy); 1377 1378 drv_rfkill_poll(local); 1379 } 1380 1381 #ifdef CONFIG_NL80211_TESTMODE 1382 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len) 1383 { 1384 struct ieee80211_local *local = wiphy_priv(wiphy); 1385 1386 if (!local->ops->testmode_cmd) 1387 return -EOPNOTSUPP; 1388 1389 return local->ops->testmode_cmd(&local->hw, data, len); 1390 } 1391 #endif 1392 1393 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1394 enum ieee80211_smps_mode smps_mode) 1395 { 1396 const u8 *ap; 1397 enum ieee80211_smps_mode old_req; 1398 int err; 1399 1400 old_req = sdata->u.mgd.req_smps; 1401 sdata->u.mgd.req_smps = smps_mode; 1402 1403 if (old_req == smps_mode && 1404 smps_mode != IEEE80211_SMPS_AUTOMATIC) 1405 return 0; 1406 1407 /* 1408 * If not associated, or current association is not an HT 1409 * association, there's no need to send an action frame. 1410 */ 1411 if (!sdata->u.mgd.associated || 1412 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) { 1413 mutex_lock(&sdata->local->iflist_mtx); 1414 ieee80211_recalc_smps(sdata->local, sdata); 1415 mutex_unlock(&sdata->local->iflist_mtx); 1416 return 0; 1417 } 1418 1419 ap = sdata->u.mgd.associated->bssid; 1420 1421 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 1422 if (sdata->u.mgd.powersave) 1423 smps_mode = IEEE80211_SMPS_DYNAMIC; 1424 else 1425 smps_mode = IEEE80211_SMPS_OFF; 1426 } 1427 1428 /* send SM PS frame to AP */ 1429 err = ieee80211_send_smps_action(sdata, smps_mode, 1430 ap, ap); 1431 if (err) 1432 sdata->u.mgd.req_smps = old_req; 1433 1434 return err; 1435 } 1436 1437 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 1438 bool enabled, int timeout) 1439 { 1440 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1441 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 1442 1443 if (sdata->vif.type != NL80211_IFTYPE_STATION) 1444 return -EOPNOTSUPP; 1445 1446 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 1447 return -EOPNOTSUPP; 1448 1449 if (enabled == sdata->u.mgd.powersave && 1450 timeout == local->dynamic_ps_forced_timeout) 1451 return 0; 1452 1453 sdata->u.mgd.powersave = enabled; 1454 local->dynamic_ps_forced_timeout = timeout; 1455 1456 /* no change, but if automatic follow powersave */ 1457 mutex_lock(&sdata->u.mgd.mtx); 1458 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps); 1459 mutex_unlock(&sdata->u.mgd.mtx); 1460 1461 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 1462 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 1463 1464 ieee80211_recalc_ps(local, -1); 1465 1466 return 0; 1467 } 1468 1469 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 1470 struct net_device *dev, 1471 s32 rssi_thold, u32 rssi_hyst) 1472 { 1473 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1474 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 1475 struct ieee80211_vif *vif = &sdata->vif; 1476 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 1477 1478 if (rssi_thold == bss_conf->cqm_rssi_thold && 1479 rssi_hyst == bss_conf->cqm_rssi_hyst) 1480 return 0; 1481 1482 bss_conf->cqm_rssi_thold = rssi_thold; 1483 bss_conf->cqm_rssi_hyst = rssi_hyst; 1484 1485 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) { 1486 if (sdata->vif.type != NL80211_IFTYPE_STATION) 1487 return -EOPNOTSUPP; 1488 return 0; 1489 } 1490 1491 /* tell the driver upon association, unless already associated */ 1492 if (sdata->u.mgd.associated) 1493 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 1494 1495 return 0; 1496 } 1497 1498 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 1499 struct net_device *dev, 1500 const u8 *addr, 1501 const struct cfg80211_bitrate_mask *mask) 1502 { 1503 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1504 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 1505 int i; 1506 1507 /* 1508 * This _could_ be supported by providing a hook for 1509 * drivers for this function, but at this point it 1510 * doesn't seem worth bothering. 1511 */ 1512 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) 1513 return -EOPNOTSUPP; 1514 1515 1516 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 1517 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 1518 1519 return 0; 1520 } 1521 1522 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 1523 struct net_device *dev, 1524 struct ieee80211_channel *chan, 1525 enum nl80211_channel_type channel_type, 1526 unsigned int duration, 1527 u64 *cookie) 1528 { 1529 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1530 1531 return ieee80211_wk_remain_on_channel(sdata, chan, channel_type, 1532 duration, cookie); 1533 } 1534 1535 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1536 struct net_device *dev, 1537 u64 cookie) 1538 { 1539 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1540 1541 return ieee80211_wk_cancel_remain_on_channel(sdata, cookie); 1542 } 1543 1544 static int ieee80211_action(struct wiphy *wiphy, struct net_device *dev, 1545 struct ieee80211_channel *chan, 1546 enum nl80211_channel_type channel_type, 1547 bool channel_type_valid, 1548 const u8 *buf, size_t len, u64 *cookie) 1549 { 1550 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1551 struct ieee80211_local *local = sdata->local; 1552 struct sk_buff *skb; 1553 struct sta_info *sta; 1554 const struct ieee80211_mgmt *mgmt = (void *)buf; 1555 u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 1556 IEEE80211_TX_CTL_REQ_TX_STATUS; 1557 1558 /* Check that we are on the requested channel for transmission */ 1559 if (chan != local->tmp_channel && 1560 chan != local->oper_channel) 1561 return -EBUSY; 1562 if (channel_type_valid && 1563 (channel_type != local->tmp_channel_type && 1564 channel_type != local->_oper_channel_type)) 1565 return -EBUSY; 1566 1567 switch (sdata->vif.type) { 1568 case NL80211_IFTYPE_ADHOC: 1569 if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) 1570 break; 1571 rcu_read_lock(); 1572 sta = sta_info_get(sdata, mgmt->da); 1573 rcu_read_unlock(); 1574 if (!sta) 1575 return -ENOLINK; 1576 break; 1577 case NL80211_IFTYPE_STATION: 1578 if (!(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) 1579 flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 1580 break; 1581 default: 1582 return -EOPNOTSUPP; 1583 } 1584 1585 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); 1586 if (!skb) 1587 return -ENOMEM; 1588 skb_reserve(skb, local->hw.extra_tx_headroom); 1589 1590 memcpy(skb_put(skb, len), buf, len); 1591 1592 IEEE80211_SKB_CB(skb)->flags = flags; 1593 1594 skb->dev = sdata->dev; 1595 ieee80211_tx_skb(sdata, skb); 1596 1597 *cookie = (unsigned long) skb; 1598 return 0; 1599 } 1600 1601 struct cfg80211_ops mac80211_config_ops = { 1602 .add_virtual_intf = ieee80211_add_iface, 1603 .del_virtual_intf = ieee80211_del_iface, 1604 .change_virtual_intf = ieee80211_change_iface, 1605 .add_key = ieee80211_add_key, 1606 .del_key = ieee80211_del_key, 1607 .get_key = ieee80211_get_key, 1608 .set_default_key = ieee80211_config_default_key, 1609 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 1610 .add_beacon = ieee80211_add_beacon, 1611 .set_beacon = ieee80211_set_beacon, 1612 .del_beacon = ieee80211_del_beacon, 1613 .add_station = ieee80211_add_station, 1614 .del_station = ieee80211_del_station, 1615 .change_station = ieee80211_change_station, 1616 .get_station = ieee80211_get_station, 1617 .dump_station = ieee80211_dump_station, 1618 .dump_survey = ieee80211_dump_survey, 1619 #ifdef CONFIG_MAC80211_MESH 1620 .add_mpath = ieee80211_add_mpath, 1621 .del_mpath = ieee80211_del_mpath, 1622 .change_mpath = ieee80211_change_mpath, 1623 .get_mpath = ieee80211_get_mpath, 1624 .dump_mpath = ieee80211_dump_mpath, 1625 .set_mesh_params = ieee80211_set_mesh_params, 1626 .get_mesh_params = ieee80211_get_mesh_params, 1627 #endif 1628 .change_bss = ieee80211_change_bss, 1629 .set_txq_params = ieee80211_set_txq_params, 1630 .set_channel = ieee80211_set_channel, 1631 .suspend = ieee80211_suspend, 1632 .resume = ieee80211_resume, 1633 .scan = ieee80211_scan, 1634 .auth = ieee80211_auth, 1635 .assoc = ieee80211_assoc, 1636 .deauth = ieee80211_deauth, 1637 .disassoc = ieee80211_disassoc, 1638 .join_ibss = ieee80211_join_ibss, 1639 .leave_ibss = ieee80211_leave_ibss, 1640 .set_wiphy_params = ieee80211_set_wiphy_params, 1641 .set_tx_power = ieee80211_set_tx_power, 1642 .get_tx_power = ieee80211_get_tx_power, 1643 .set_wds_peer = ieee80211_set_wds_peer, 1644 .rfkill_poll = ieee80211_rfkill_poll, 1645 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 1646 .set_power_mgmt = ieee80211_set_power_mgmt, 1647 .set_bitrate_mask = ieee80211_set_bitrate_mask, 1648 .remain_on_channel = ieee80211_remain_on_channel, 1649 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 1650 .action = ieee80211_action, 1651 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 1652 }; 1653