1 /* 2 * mac80211 configuration hooks for cfg80211 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * Copyright 2013-2015 Intel Mobile Communications GmbH 6 * 7 * This file is GPLv2 as found in COPYING. 8 */ 9 10 #include <linux/ieee80211.h> 11 #include <linux/nl80211.h> 12 #include <linux/rtnetlink.h> 13 #include <linux/slab.h> 14 #include <net/net_namespace.h> 15 #include <linux/rcupdate.h> 16 #include <linux/if_ether.h> 17 #include <net/cfg80211.h> 18 #include "ieee80211_i.h" 19 #include "driver-ops.h" 20 #include "rate.h" 21 #include "mesh.h" 22 #include "wme.h" 23 24 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, 25 const char *name, 26 unsigned char name_assign_type, 27 enum nl80211_iftype type, 28 u32 *flags, 29 struct vif_params *params) 30 { 31 struct ieee80211_local *local = wiphy_priv(wiphy); 32 struct wireless_dev *wdev; 33 struct ieee80211_sub_if_data *sdata; 34 int err; 35 36 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params); 37 if (err) 38 return ERR_PTR(err); 39 40 if (type == NL80211_IFTYPE_MONITOR && flags) { 41 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 42 sdata->u.mntr.flags = *flags; 43 } 44 45 return wdev; 46 } 47 48 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) 49 { 50 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); 51 52 return 0; 53 } 54 55 static int ieee80211_change_iface(struct wiphy *wiphy, 56 struct net_device *dev, 57 enum nl80211_iftype type, u32 *flags, 58 struct vif_params *params) 59 { 60 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 61 int ret; 62 63 ret = ieee80211_if_change_type(sdata, type); 64 if (ret) 65 return ret; 66 67 if (type == NL80211_IFTYPE_AP_VLAN && 68 params && params->use_4addr == 0) { 69 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); 70 ieee80211_check_fast_rx_iface(sdata); 71 } else if (type == NL80211_IFTYPE_STATION && 72 params && params->use_4addr >= 0) { 73 sdata->u.mgd.use_4addr = params->use_4addr; 74 } 75 76 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { 77 struct ieee80211_local *local = sdata->local; 78 struct ieee80211_sub_if_data *monitor_sdata; 79 u32 mu_mntr_cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER; 80 81 monitor_sdata = rtnl_dereference(local->monitor_sdata); 82 if (monitor_sdata && 83 wiphy_ext_feature_isset(wiphy, mu_mntr_cap_flag)) { 84 memcpy(monitor_sdata->vif.bss_conf.mu_group.membership, 85 params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN); 86 memcpy(monitor_sdata->vif.bss_conf.mu_group.position, 87 params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN, 88 WLAN_USER_POSITION_LEN); 89 monitor_sdata->vif.mu_mimo_owner = true; 90 ieee80211_bss_info_change_notify(monitor_sdata, 91 BSS_CHANGED_MU_GROUPS); 92 93 ether_addr_copy(monitor_sdata->u.mntr.mu_follow_addr, 94 params->macaddr); 95 } 96 97 if (!flags) 98 return 0; 99 100 if (ieee80211_sdata_running(sdata)) { 101 u32 mask = MONITOR_FLAG_COOK_FRAMES | 102 MONITOR_FLAG_ACTIVE; 103 104 /* 105 * Prohibit MONITOR_FLAG_COOK_FRAMES and 106 * MONITOR_FLAG_ACTIVE to be changed while the 107 * interface is up. 108 * Else we would need to add a lot of cruft 109 * to update everything: 110 * cooked_mntrs, monitor and all fif_* counters 111 * reconfigure hardware 112 */ 113 if ((*flags & mask) != (sdata->u.mntr.flags & mask)) 114 return -EBUSY; 115 116 ieee80211_adjust_monitor_flags(sdata, -1); 117 sdata->u.mntr.flags = *flags; 118 ieee80211_adjust_monitor_flags(sdata, 1); 119 120 ieee80211_configure_filter(local); 121 } else { 122 /* 123 * Because the interface is down, ieee80211_do_stop 124 * and ieee80211_do_open take care of "everything" 125 * mentioned in the comment above. 126 */ 127 sdata->u.mntr.flags = *flags; 128 } 129 } 130 131 return 0; 132 } 133 134 static int ieee80211_start_p2p_device(struct wiphy *wiphy, 135 struct wireless_dev *wdev) 136 { 137 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 138 int ret; 139 140 mutex_lock(&sdata->local->chanctx_mtx); 141 ret = ieee80211_check_combinations(sdata, NULL, 0, 0); 142 mutex_unlock(&sdata->local->chanctx_mtx); 143 if (ret < 0) 144 return ret; 145 146 return ieee80211_do_open(wdev, true); 147 } 148 149 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 150 struct wireless_dev *wdev) 151 { 152 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 153 } 154 155 static int ieee80211_set_noack_map(struct wiphy *wiphy, 156 struct net_device *dev, 157 u16 noack_map) 158 { 159 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 160 161 sdata->noack_map = noack_map; 162 163 ieee80211_check_fast_xmit_iface(sdata); 164 165 return 0; 166 } 167 168 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 169 u8 key_idx, bool pairwise, const u8 *mac_addr, 170 struct key_params *params) 171 { 172 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 173 struct ieee80211_local *local = sdata->local; 174 struct sta_info *sta = NULL; 175 const struct ieee80211_cipher_scheme *cs = NULL; 176 struct ieee80211_key *key; 177 int err; 178 179 if (!ieee80211_sdata_running(sdata)) 180 return -ENETDOWN; 181 182 /* reject WEP and TKIP keys if WEP failed to initialize */ 183 switch (params->cipher) { 184 case WLAN_CIPHER_SUITE_WEP40: 185 case WLAN_CIPHER_SUITE_TKIP: 186 case WLAN_CIPHER_SUITE_WEP104: 187 if (IS_ERR(local->wep_tx_tfm)) 188 return -EINVAL; 189 break; 190 case WLAN_CIPHER_SUITE_CCMP: 191 case WLAN_CIPHER_SUITE_CCMP_256: 192 case WLAN_CIPHER_SUITE_AES_CMAC: 193 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 194 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 195 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 196 case WLAN_CIPHER_SUITE_GCMP: 197 case WLAN_CIPHER_SUITE_GCMP_256: 198 break; 199 default: 200 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type); 201 break; 202 } 203 204 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 205 params->key, params->seq_len, params->seq, 206 cs); 207 if (IS_ERR(key)) 208 return PTR_ERR(key); 209 210 if (pairwise) 211 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 212 213 mutex_lock(&local->sta_mtx); 214 215 if (mac_addr) { 216 if (ieee80211_vif_is_mesh(&sdata->vif)) 217 sta = sta_info_get(sdata, mac_addr); 218 else 219 sta = sta_info_get_bss(sdata, mac_addr); 220 /* 221 * The ASSOC test makes sure the driver is ready to 222 * receive the key. When wpa_supplicant has roamed 223 * using FT, it attempts to set the key before 224 * association has completed, this rejects that attempt 225 * so it will set the key again after association. 226 * 227 * TODO: accept the key if we have a station entry and 228 * add it to the device after the station. 229 */ 230 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 231 ieee80211_key_free_unused(key); 232 err = -ENOENT; 233 goto out_unlock; 234 } 235 } 236 237 switch (sdata->vif.type) { 238 case NL80211_IFTYPE_STATION: 239 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 240 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 241 break; 242 case NL80211_IFTYPE_AP: 243 case NL80211_IFTYPE_AP_VLAN: 244 /* Keys without a station are used for TX only */ 245 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) 246 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 247 break; 248 case NL80211_IFTYPE_ADHOC: 249 /* no MFP (yet) */ 250 break; 251 case NL80211_IFTYPE_MESH_POINT: 252 #ifdef CONFIG_MAC80211_MESH 253 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 254 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 255 break; 256 #endif 257 case NL80211_IFTYPE_WDS: 258 case NL80211_IFTYPE_MONITOR: 259 case NL80211_IFTYPE_P2P_DEVICE: 260 case NL80211_IFTYPE_UNSPECIFIED: 261 case NUM_NL80211_IFTYPES: 262 case NL80211_IFTYPE_P2P_CLIENT: 263 case NL80211_IFTYPE_P2P_GO: 264 case NL80211_IFTYPE_OCB: 265 /* shouldn't happen */ 266 WARN_ON_ONCE(1); 267 break; 268 } 269 270 if (sta) 271 sta->cipher_scheme = cs; 272 273 err = ieee80211_key_link(key, sdata, sta); 274 275 out_unlock: 276 mutex_unlock(&local->sta_mtx); 277 278 return err; 279 } 280 281 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 282 u8 key_idx, bool pairwise, const u8 *mac_addr) 283 { 284 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 285 struct ieee80211_local *local = sdata->local; 286 struct sta_info *sta; 287 struct ieee80211_key *key = NULL; 288 int ret; 289 290 mutex_lock(&local->sta_mtx); 291 mutex_lock(&local->key_mtx); 292 293 if (mac_addr) { 294 ret = -ENOENT; 295 296 sta = sta_info_get_bss(sdata, mac_addr); 297 if (!sta) 298 goto out_unlock; 299 300 if (pairwise) 301 key = key_mtx_dereference(local, sta->ptk[key_idx]); 302 else 303 key = key_mtx_dereference(local, sta->gtk[key_idx]); 304 } else 305 key = key_mtx_dereference(local, sdata->keys[key_idx]); 306 307 if (!key) { 308 ret = -ENOENT; 309 goto out_unlock; 310 } 311 312 ieee80211_key_free(key, true); 313 314 ret = 0; 315 out_unlock: 316 mutex_unlock(&local->key_mtx); 317 mutex_unlock(&local->sta_mtx); 318 319 return ret; 320 } 321 322 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 323 u8 key_idx, bool pairwise, const u8 *mac_addr, 324 void *cookie, 325 void (*callback)(void *cookie, 326 struct key_params *params)) 327 { 328 struct ieee80211_sub_if_data *sdata; 329 struct sta_info *sta = NULL; 330 u8 seq[6] = {0}; 331 struct key_params params; 332 struct ieee80211_key *key = NULL; 333 u64 pn64; 334 u32 iv32; 335 u16 iv16; 336 int err = -ENOENT; 337 struct ieee80211_key_seq kseq = {}; 338 339 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 340 341 rcu_read_lock(); 342 343 if (mac_addr) { 344 sta = sta_info_get_bss(sdata, mac_addr); 345 if (!sta) 346 goto out; 347 348 if (pairwise && key_idx < NUM_DEFAULT_KEYS) 349 key = rcu_dereference(sta->ptk[key_idx]); 350 else if (!pairwise && 351 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) 352 key = rcu_dereference(sta->gtk[key_idx]); 353 } else 354 key = rcu_dereference(sdata->keys[key_idx]); 355 356 if (!key) 357 goto out; 358 359 memset(¶ms, 0, sizeof(params)); 360 361 params.cipher = key->conf.cipher; 362 363 switch (key->conf.cipher) { 364 case WLAN_CIPHER_SUITE_TKIP: 365 pn64 = atomic64_read(&key->conf.tx_pn); 366 iv32 = TKIP_PN_TO_IV32(pn64); 367 iv16 = TKIP_PN_TO_IV16(pn64); 368 369 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 370 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 371 drv_get_key_seq(sdata->local, key, &kseq); 372 iv32 = kseq.tkip.iv32; 373 iv16 = kseq.tkip.iv16; 374 } 375 376 seq[0] = iv16 & 0xff; 377 seq[1] = (iv16 >> 8) & 0xff; 378 seq[2] = iv32 & 0xff; 379 seq[3] = (iv32 >> 8) & 0xff; 380 seq[4] = (iv32 >> 16) & 0xff; 381 seq[5] = (iv32 >> 24) & 0xff; 382 params.seq = seq; 383 params.seq_len = 6; 384 break; 385 case WLAN_CIPHER_SUITE_CCMP: 386 case WLAN_CIPHER_SUITE_CCMP_256: 387 case WLAN_CIPHER_SUITE_AES_CMAC: 388 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 389 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 390 offsetof(typeof(kseq), aes_cmac)); 391 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 392 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 393 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 394 offsetof(typeof(kseq), aes_gmac)); 395 case WLAN_CIPHER_SUITE_GCMP: 396 case WLAN_CIPHER_SUITE_GCMP_256: 397 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 398 offsetof(typeof(kseq), gcmp)); 399 400 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 401 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 402 drv_get_key_seq(sdata->local, key, &kseq); 403 memcpy(seq, kseq.ccmp.pn, 6); 404 } else { 405 pn64 = atomic64_read(&key->conf.tx_pn); 406 seq[0] = pn64; 407 seq[1] = pn64 >> 8; 408 seq[2] = pn64 >> 16; 409 seq[3] = pn64 >> 24; 410 seq[4] = pn64 >> 32; 411 seq[5] = pn64 >> 40; 412 } 413 params.seq = seq; 414 params.seq_len = 6; 415 break; 416 default: 417 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) 418 break; 419 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) 420 break; 421 drv_get_key_seq(sdata->local, key, &kseq); 422 params.seq = kseq.hw.seq; 423 params.seq_len = kseq.hw.seq_len; 424 break; 425 } 426 427 params.key = key->conf.key; 428 params.key_len = key->conf.keylen; 429 430 callback(cookie, ¶ms); 431 err = 0; 432 433 out: 434 rcu_read_unlock(); 435 return err; 436 } 437 438 static int ieee80211_config_default_key(struct wiphy *wiphy, 439 struct net_device *dev, 440 u8 key_idx, bool uni, 441 bool multi) 442 { 443 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 444 445 ieee80211_set_default_key(sdata, key_idx, uni, multi); 446 447 return 0; 448 } 449 450 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 451 struct net_device *dev, 452 u8 key_idx) 453 { 454 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 455 456 ieee80211_set_default_mgmt_key(sdata, key_idx); 457 458 return 0; 459 } 460 461 void sta_set_rate_info_tx(struct sta_info *sta, 462 const struct ieee80211_tx_rate *rate, 463 struct rate_info *rinfo) 464 { 465 rinfo->flags = 0; 466 if (rate->flags & IEEE80211_TX_RC_MCS) { 467 rinfo->flags |= RATE_INFO_FLAGS_MCS; 468 rinfo->mcs = rate->idx; 469 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 470 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 471 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 472 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 473 } else { 474 struct ieee80211_supported_band *sband; 475 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 476 u16 brate; 477 478 sband = sta->local->hw.wiphy->bands[ 479 ieee80211_get_sdata_band(sta->sdata)]; 480 brate = sband->bitrates[rate->idx].bitrate; 481 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 482 } 483 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 484 rinfo->bw = RATE_INFO_BW_40; 485 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 486 rinfo->bw = RATE_INFO_BW_80; 487 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 488 rinfo->bw = RATE_INFO_BW_160; 489 else 490 rinfo->bw = RATE_INFO_BW_20; 491 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 492 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 493 } 494 495 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 496 int idx, u8 *mac, struct station_info *sinfo) 497 { 498 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 499 struct ieee80211_local *local = sdata->local; 500 struct sta_info *sta; 501 int ret = -ENOENT; 502 503 mutex_lock(&local->sta_mtx); 504 505 sta = sta_info_get_by_idx(sdata, idx); 506 if (sta) { 507 ret = 0; 508 memcpy(mac, sta->sta.addr, ETH_ALEN); 509 sta_set_sinfo(sta, sinfo); 510 } 511 512 mutex_unlock(&local->sta_mtx); 513 514 return ret; 515 } 516 517 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 518 int idx, struct survey_info *survey) 519 { 520 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 521 522 return drv_get_survey(local, idx, survey); 523 } 524 525 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 526 const u8 *mac, struct station_info *sinfo) 527 { 528 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 529 struct ieee80211_local *local = sdata->local; 530 struct sta_info *sta; 531 int ret = -ENOENT; 532 533 mutex_lock(&local->sta_mtx); 534 535 sta = sta_info_get_bss(sdata, mac); 536 if (sta) { 537 ret = 0; 538 sta_set_sinfo(sta, sinfo); 539 } 540 541 mutex_unlock(&local->sta_mtx); 542 543 return ret; 544 } 545 546 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 547 struct cfg80211_chan_def *chandef) 548 { 549 struct ieee80211_local *local = wiphy_priv(wiphy); 550 struct ieee80211_sub_if_data *sdata; 551 int ret = 0; 552 553 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 554 return 0; 555 556 mutex_lock(&local->mtx); 557 mutex_lock(&local->iflist_mtx); 558 if (local->use_chanctx) { 559 sdata = rcu_dereference_protected( 560 local->monitor_sdata, 561 lockdep_is_held(&local->iflist_mtx)); 562 if (sdata) { 563 ieee80211_vif_release_channel(sdata); 564 ret = ieee80211_vif_use_channel(sdata, chandef, 565 IEEE80211_CHANCTX_EXCLUSIVE); 566 } 567 } else if (local->open_count == local->monitors) { 568 local->_oper_chandef = *chandef; 569 ieee80211_hw_config(local, 0); 570 } 571 572 if (ret == 0) 573 local->monitor_chandef = *chandef; 574 mutex_unlock(&local->iflist_mtx); 575 mutex_unlock(&local->mtx); 576 577 return ret; 578 } 579 580 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 581 const u8 *resp, size_t resp_len, 582 const struct ieee80211_csa_settings *csa) 583 { 584 struct probe_resp *new, *old; 585 586 if (!resp || !resp_len) 587 return 1; 588 589 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 590 591 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 592 if (!new) 593 return -ENOMEM; 594 595 new->len = resp_len; 596 memcpy(new->data, resp, resp_len); 597 598 if (csa) 599 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp, 600 csa->n_counter_offsets_presp * 601 sizeof(new->csa_counter_offsets[0])); 602 603 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 604 if (old) 605 kfree_rcu(old, rcu_head); 606 607 return 0; 608 } 609 610 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 611 struct cfg80211_beacon_data *params, 612 const struct ieee80211_csa_settings *csa) 613 { 614 struct beacon_data *new, *old; 615 int new_head_len, new_tail_len; 616 int size, err; 617 u32 changed = BSS_CHANGED_BEACON; 618 619 old = sdata_dereference(sdata->u.ap.beacon, sdata); 620 621 622 /* Need to have a beacon head if we don't have one yet */ 623 if (!params->head && !old) 624 return -EINVAL; 625 626 /* new or old head? */ 627 if (params->head) 628 new_head_len = params->head_len; 629 else 630 new_head_len = old->head_len; 631 632 /* new or old tail? */ 633 if (params->tail || !old) 634 /* params->tail_len will be zero for !params->tail */ 635 new_tail_len = params->tail_len; 636 else 637 new_tail_len = old->tail_len; 638 639 size = sizeof(*new) + new_head_len + new_tail_len; 640 641 new = kzalloc(size, GFP_KERNEL); 642 if (!new) 643 return -ENOMEM; 644 645 /* start filling the new info now */ 646 647 /* 648 * pointers go into the block we allocated, 649 * memory is | beacon_data | head | tail | 650 */ 651 new->head = ((u8 *) new) + sizeof(*new); 652 new->tail = new->head + new_head_len; 653 new->head_len = new_head_len; 654 new->tail_len = new_tail_len; 655 656 if (csa) { 657 new->csa_current_counter = csa->count; 658 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon, 659 csa->n_counter_offsets_beacon * 660 sizeof(new->csa_counter_offsets[0])); 661 } 662 663 /* copy in head */ 664 if (params->head) 665 memcpy(new->head, params->head, new_head_len); 666 else 667 memcpy(new->head, old->head, new_head_len); 668 669 /* copy in optional tail */ 670 if (params->tail) 671 memcpy(new->tail, params->tail, new_tail_len); 672 else 673 if (old) 674 memcpy(new->tail, old->tail, new_tail_len); 675 676 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 677 params->probe_resp_len, csa); 678 if (err < 0) 679 return err; 680 if (err == 0) 681 changed |= BSS_CHANGED_AP_PROBE_RESP; 682 683 rcu_assign_pointer(sdata->u.ap.beacon, new); 684 685 if (old) 686 kfree_rcu(old, rcu_head); 687 688 return changed; 689 } 690 691 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 692 struct cfg80211_ap_settings *params) 693 { 694 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 695 struct ieee80211_local *local = sdata->local; 696 struct beacon_data *old; 697 struct ieee80211_sub_if_data *vlan; 698 u32 changed = BSS_CHANGED_BEACON_INT | 699 BSS_CHANGED_BEACON_ENABLED | 700 BSS_CHANGED_BEACON | 701 BSS_CHANGED_SSID | 702 BSS_CHANGED_P2P_PS | 703 BSS_CHANGED_TXPOWER; 704 int err; 705 706 old = sdata_dereference(sdata->u.ap.beacon, sdata); 707 if (old) 708 return -EALREADY; 709 710 switch (params->smps_mode) { 711 case NL80211_SMPS_OFF: 712 sdata->smps_mode = IEEE80211_SMPS_OFF; 713 break; 714 case NL80211_SMPS_STATIC: 715 sdata->smps_mode = IEEE80211_SMPS_STATIC; 716 break; 717 case NL80211_SMPS_DYNAMIC: 718 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; 719 break; 720 default: 721 return -EINVAL; 722 } 723 sdata->needed_rx_chains = sdata->local->rx_chains; 724 725 mutex_lock(&local->mtx); 726 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 727 IEEE80211_CHANCTX_SHARED); 728 if (!err) 729 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 730 mutex_unlock(&local->mtx); 731 if (err) 732 return err; 733 734 /* 735 * Apply control port protocol, this allows us to 736 * not encrypt dynamic WEP control frames. 737 */ 738 sdata->control_port_protocol = params->crypto.control_port_ethertype; 739 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 740 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 741 ¶ms->crypto, 742 sdata->vif.type); 743 744 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 745 vlan->control_port_protocol = 746 params->crypto.control_port_ethertype; 747 vlan->control_port_no_encrypt = 748 params->crypto.control_port_no_encrypt; 749 vlan->encrypt_headroom = 750 ieee80211_cs_headroom(sdata->local, 751 ¶ms->crypto, 752 vlan->vif.type); 753 } 754 755 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 756 sdata->vif.bss_conf.dtim_period = params->dtim_period; 757 sdata->vif.bss_conf.enable_beacon = true; 758 sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p; 759 760 sdata->vif.bss_conf.ssid_len = params->ssid_len; 761 if (params->ssid_len) 762 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 763 params->ssid_len); 764 sdata->vif.bss_conf.hidden_ssid = 765 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 766 767 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 768 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 769 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 770 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 771 if (params->p2p_opp_ps) 772 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 773 IEEE80211_P2P_OPPPS_ENABLE_BIT; 774 775 err = ieee80211_assign_beacon(sdata, ¶ms->beacon, NULL); 776 if (err < 0) { 777 ieee80211_vif_release_channel(sdata); 778 return err; 779 } 780 changed |= err; 781 782 err = drv_start_ap(sdata->local, sdata); 783 if (err) { 784 old = sdata_dereference(sdata->u.ap.beacon, sdata); 785 786 if (old) 787 kfree_rcu(old, rcu_head); 788 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 789 ieee80211_vif_release_channel(sdata); 790 return err; 791 } 792 793 ieee80211_recalc_dtim(local, sdata); 794 ieee80211_bss_info_change_notify(sdata, changed); 795 796 netif_carrier_on(dev); 797 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 798 netif_carrier_on(vlan->dev); 799 800 return 0; 801 } 802 803 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 804 struct cfg80211_beacon_data *params) 805 { 806 struct ieee80211_sub_if_data *sdata; 807 struct beacon_data *old; 808 int err; 809 810 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 811 sdata_assert_lock(sdata); 812 813 /* don't allow changing the beacon while CSA is in place - offset 814 * of channel switch counter may change 815 */ 816 if (sdata->vif.csa_active) 817 return -EBUSY; 818 819 old = sdata_dereference(sdata->u.ap.beacon, sdata); 820 if (!old) 821 return -ENOENT; 822 823 err = ieee80211_assign_beacon(sdata, params, NULL); 824 if (err < 0) 825 return err; 826 ieee80211_bss_info_change_notify(sdata, err); 827 return 0; 828 } 829 830 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 831 { 832 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 833 struct ieee80211_sub_if_data *vlan; 834 struct ieee80211_local *local = sdata->local; 835 struct beacon_data *old_beacon; 836 struct probe_resp *old_probe_resp; 837 struct cfg80211_chan_def chandef; 838 839 sdata_assert_lock(sdata); 840 841 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 842 if (!old_beacon) 843 return -ENOENT; 844 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 845 846 /* abort any running channel switch */ 847 mutex_lock(&local->mtx); 848 sdata->vif.csa_active = false; 849 if (sdata->csa_block_tx) { 850 ieee80211_wake_vif_queues(local, sdata, 851 IEEE80211_QUEUE_STOP_REASON_CSA); 852 sdata->csa_block_tx = false; 853 } 854 855 mutex_unlock(&local->mtx); 856 857 kfree(sdata->u.ap.next_beacon); 858 sdata->u.ap.next_beacon = NULL; 859 860 /* turn off carrier for this interface and dependent VLANs */ 861 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 862 netif_carrier_off(vlan->dev); 863 netif_carrier_off(dev); 864 865 /* remove beacon and probe response */ 866 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 867 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 868 kfree_rcu(old_beacon, rcu_head); 869 if (old_probe_resp) 870 kfree_rcu(old_probe_resp, rcu_head); 871 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF; 872 873 __sta_info_flush(sdata, true); 874 ieee80211_free_keys(sdata, true); 875 876 sdata->vif.bss_conf.enable_beacon = false; 877 sdata->vif.bss_conf.ssid_len = 0; 878 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 879 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 880 881 if (sdata->wdev.cac_started) { 882 chandef = sdata->vif.bss_conf.chandef; 883 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 884 cfg80211_cac_event(sdata->dev, &chandef, 885 NL80211_RADAR_CAC_ABORTED, 886 GFP_KERNEL); 887 } 888 889 drv_stop_ap(sdata->local, sdata); 890 891 /* free all potentially still buffered bcast frames */ 892 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 893 ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf); 894 895 mutex_lock(&local->mtx); 896 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 897 ieee80211_vif_release_channel(sdata); 898 mutex_unlock(&local->mtx); 899 900 return 0; 901 } 902 903 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 904 struct iapp_layer2_update { 905 u8 da[ETH_ALEN]; /* broadcast */ 906 u8 sa[ETH_ALEN]; /* STA addr */ 907 __be16 len; /* 6 */ 908 u8 dsap; /* 0 */ 909 u8 ssap; /* 0 */ 910 u8 control; 911 u8 xid_info[3]; 912 } __packed; 913 914 static void ieee80211_send_layer2_update(struct sta_info *sta) 915 { 916 struct iapp_layer2_update *msg; 917 struct sk_buff *skb; 918 919 /* Send Level 2 Update Frame to update forwarding tables in layer 2 920 * bridge devices */ 921 922 skb = dev_alloc_skb(sizeof(*msg)); 923 if (!skb) 924 return; 925 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 926 927 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 928 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 929 930 eth_broadcast_addr(msg->da); 931 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 932 msg->len = htons(6); 933 msg->dsap = 0; 934 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 935 msg->control = 0xaf; /* XID response lsb.1111F101. 936 * F=0 (no poll command; unsolicited frame) */ 937 msg->xid_info[0] = 0x81; /* XID format identifier */ 938 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 939 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 940 941 skb->dev = sta->sdata->dev; 942 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 943 memset(skb->cb, 0, sizeof(skb->cb)); 944 netif_rx_ni(skb); 945 } 946 947 static int sta_apply_auth_flags(struct ieee80211_local *local, 948 struct sta_info *sta, 949 u32 mask, u32 set) 950 { 951 int ret; 952 953 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 954 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 955 !test_sta_flag(sta, WLAN_STA_AUTH)) { 956 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 957 if (ret) 958 return ret; 959 } 960 961 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 962 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 963 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 964 /* 965 * When peer becomes associated, init rate control as 966 * well. Some drivers require rate control initialized 967 * before drv_sta_state() is called. 968 */ 969 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) 970 rate_control_rate_init(sta); 971 972 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 973 if (ret) 974 return ret; 975 } 976 977 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 978 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 979 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 980 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 981 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 982 else 983 ret = 0; 984 if (ret) 985 return ret; 986 } 987 988 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 989 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 990 test_sta_flag(sta, WLAN_STA_ASSOC)) { 991 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 992 if (ret) 993 return ret; 994 } 995 996 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 997 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 998 test_sta_flag(sta, WLAN_STA_AUTH)) { 999 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1000 if (ret) 1001 return ret; 1002 } 1003 1004 return 0; 1005 } 1006 1007 static void sta_apply_mesh_params(struct ieee80211_local *local, 1008 struct sta_info *sta, 1009 struct station_parameters *params) 1010 { 1011 #ifdef CONFIG_MAC80211_MESH 1012 struct ieee80211_sub_if_data *sdata = sta->sdata; 1013 u32 changed = 0; 1014 1015 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1016 switch (params->plink_state) { 1017 case NL80211_PLINK_ESTAB: 1018 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB) 1019 changed = mesh_plink_inc_estab_count(sdata); 1020 sta->mesh->plink_state = params->plink_state; 1021 sta->mesh->aid = params->peer_aid; 1022 1023 ieee80211_mps_sta_status_update(sta); 1024 changed |= ieee80211_mps_set_sta_local_pm(sta, 1025 sdata->u.mesh.mshcfg.power_mode); 1026 break; 1027 case NL80211_PLINK_LISTEN: 1028 case NL80211_PLINK_BLOCKED: 1029 case NL80211_PLINK_OPN_SNT: 1030 case NL80211_PLINK_OPN_RCVD: 1031 case NL80211_PLINK_CNF_RCVD: 1032 case NL80211_PLINK_HOLDING: 1033 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB) 1034 changed = mesh_plink_dec_estab_count(sdata); 1035 sta->mesh->plink_state = params->plink_state; 1036 1037 ieee80211_mps_sta_status_update(sta); 1038 changed |= ieee80211_mps_set_sta_local_pm(sta, 1039 NL80211_MESH_POWER_UNKNOWN); 1040 break; 1041 default: 1042 /* nothing */ 1043 break; 1044 } 1045 } 1046 1047 switch (params->plink_action) { 1048 case NL80211_PLINK_ACTION_NO_ACTION: 1049 /* nothing */ 1050 break; 1051 case NL80211_PLINK_ACTION_OPEN: 1052 changed |= mesh_plink_open(sta); 1053 break; 1054 case NL80211_PLINK_ACTION_BLOCK: 1055 changed |= mesh_plink_block(sta); 1056 break; 1057 } 1058 1059 if (params->local_pm) 1060 changed |= ieee80211_mps_set_sta_local_pm(sta, 1061 params->local_pm); 1062 1063 ieee80211_mbss_info_change_notify(sdata, changed); 1064 #endif 1065 } 1066 1067 static int sta_apply_parameters(struct ieee80211_local *local, 1068 struct sta_info *sta, 1069 struct station_parameters *params) 1070 { 1071 int ret = 0; 1072 struct ieee80211_supported_band *sband; 1073 struct ieee80211_sub_if_data *sdata = sta->sdata; 1074 enum nl80211_band band = ieee80211_get_sdata_band(sdata); 1075 u32 mask, set; 1076 1077 sband = local->hw.wiphy->bands[band]; 1078 1079 mask = params->sta_flags_mask; 1080 set = params->sta_flags_set; 1081 1082 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1083 /* 1084 * In mesh mode, ASSOCIATED isn't part of the nl80211 1085 * API but must follow AUTHENTICATED for driver state. 1086 */ 1087 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1088 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1089 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1090 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1091 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1092 /* 1093 * TDLS -- everything follows authorized, but 1094 * only becoming authorized is possible, not 1095 * going back 1096 */ 1097 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1098 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1099 BIT(NL80211_STA_FLAG_ASSOCIATED); 1100 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1101 BIT(NL80211_STA_FLAG_ASSOCIATED); 1102 } 1103 } 1104 1105 if (mask & BIT(NL80211_STA_FLAG_WME) && 1106 local->hw.queues >= IEEE80211_NUM_ACS) 1107 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); 1108 1109 /* auth flags will be set later for TDLS, 1110 * and for unassociated stations that move to assocaited */ 1111 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1112 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1113 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) { 1114 ret = sta_apply_auth_flags(local, sta, mask, set); 1115 if (ret) 1116 return ret; 1117 } 1118 1119 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1120 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1121 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1122 else 1123 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1124 } 1125 1126 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1127 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP)); 1128 if (set & BIT(NL80211_STA_FLAG_MFP)) 1129 set_sta_flag(sta, WLAN_STA_MFP); 1130 else 1131 clear_sta_flag(sta, WLAN_STA_MFP); 1132 } 1133 1134 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1135 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1136 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1137 else 1138 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1139 } 1140 1141 /* mark TDLS channel switch support, if the AP allows it */ 1142 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1143 !sdata->u.mgd.tdls_chan_switch_prohibited && 1144 params->ext_capab_len >= 4 && 1145 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) 1146 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); 1147 1148 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1149 !sdata->u.mgd.tdls_wider_bw_prohibited && 1150 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) && 1151 params->ext_capab_len >= 8 && 1152 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) 1153 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW); 1154 1155 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1156 sta->sta.uapsd_queues = params->uapsd_queues; 1157 sta->sta.max_sp = params->max_sp; 1158 } 1159 1160 /* The sender might not have sent the last bit, consider it to be 0 */ 1161 if (params->ext_capab_len >= 8) { 1162 u8 val = (params->ext_capab[7] & 1163 WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7; 1164 1165 /* we did get all the bits, take the MSB as well */ 1166 if (params->ext_capab_len >= 9) { 1167 u8 val_msb = params->ext_capab[8] & 1168 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB; 1169 val_msb <<= 1; 1170 val |= val_msb; 1171 } 1172 1173 switch (val) { 1174 case 1: 1175 sta->sta.max_amsdu_subframes = 32; 1176 break; 1177 case 2: 1178 sta->sta.max_amsdu_subframes = 16; 1179 break; 1180 case 3: 1181 sta->sta.max_amsdu_subframes = 8; 1182 break; 1183 default: 1184 sta->sta.max_amsdu_subframes = 0; 1185 } 1186 } 1187 1188 /* 1189 * cfg80211 validates this (1-2007) and allows setting the AID 1190 * only when creating a new station entry 1191 */ 1192 if (params->aid) 1193 sta->sta.aid = params->aid; 1194 1195 /* 1196 * Some of the following updates would be racy if called on an 1197 * existing station, via ieee80211_change_station(). However, 1198 * all such changes are rejected by cfg80211 except for updates 1199 * changing the supported rates on an existing but not yet used 1200 * TDLS peer. 1201 */ 1202 1203 if (params->listen_interval >= 0) 1204 sta->listen_interval = params->listen_interval; 1205 1206 if (params->supported_rates) { 1207 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1208 sband, params->supported_rates, 1209 params->supported_rates_len, 1210 &sta->sta.supp_rates[band]); 1211 } 1212 1213 if (params->ht_capa) 1214 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1215 params->ht_capa, sta); 1216 1217 /* VHT can override some HT caps such as the A-MSDU max length */ 1218 if (params->vht_capa) 1219 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1220 params->vht_capa, sta); 1221 1222 if (params->opmode_notif_used) { 1223 /* returned value is only needed for rc update, but the 1224 * rc isn't initialized here yet, so ignore it 1225 */ 1226 __ieee80211_vht_handle_opmode(sdata, sta, 1227 params->opmode_notif, band); 1228 } 1229 1230 if (params->support_p2p_ps >= 0) 1231 sta->sta.support_p2p_ps = params->support_p2p_ps; 1232 1233 if (ieee80211_vif_is_mesh(&sdata->vif)) 1234 sta_apply_mesh_params(local, sta, params); 1235 1236 /* set the STA state after all sta info from usermode has been set */ 1237 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) || 1238 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) { 1239 ret = sta_apply_auth_flags(local, sta, mask, set); 1240 if (ret) 1241 return ret; 1242 } 1243 1244 return 0; 1245 } 1246 1247 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1248 const u8 *mac, 1249 struct station_parameters *params) 1250 { 1251 struct ieee80211_local *local = wiphy_priv(wiphy); 1252 struct sta_info *sta; 1253 struct ieee80211_sub_if_data *sdata; 1254 int err; 1255 int layer2_update; 1256 1257 if (params->vlan) { 1258 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1259 1260 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1261 sdata->vif.type != NL80211_IFTYPE_AP) 1262 return -EINVAL; 1263 } else 1264 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1265 1266 if (ether_addr_equal(mac, sdata->vif.addr)) 1267 return -EINVAL; 1268 1269 if (is_multicast_ether_addr(mac)) 1270 return -EINVAL; 1271 1272 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1273 if (!sta) 1274 return -ENOMEM; 1275 1276 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1277 sta->sta.tdls = true; 1278 1279 err = sta_apply_parameters(local, sta, params); 1280 if (err) { 1281 sta_info_free(local, sta); 1282 return err; 1283 } 1284 1285 /* 1286 * for TDLS and for unassociated station, rate control should be 1287 * initialized only when rates are known and station is marked 1288 * authorized/associated 1289 */ 1290 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1291 test_sta_flag(sta, WLAN_STA_ASSOC)) 1292 rate_control_rate_init(sta); 1293 1294 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1295 sdata->vif.type == NL80211_IFTYPE_AP; 1296 1297 err = sta_info_insert_rcu(sta); 1298 if (err) { 1299 rcu_read_unlock(); 1300 return err; 1301 } 1302 1303 if (layer2_update) 1304 ieee80211_send_layer2_update(sta); 1305 1306 rcu_read_unlock(); 1307 1308 return 0; 1309 } 1310 1311 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1312 struct station_del_parameters *params) 1313 { 1314 struct ieee80211_sub_if_data *sdata; 1315 1316 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1317 1318 if (params->mac) 1319 return sta_info_destroy_addr_bss(sdata, params->mac); 1320 1321 sta_info_flush(sdata); 1322 return 0; 1323 } 1324 1325 static int ieee80211_change_station(struct wiphy *wiphy, 1326 struct net_device *dev, const u8 *mac, 1327 struct station_parameters *params) 1328 { 1329 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1330 struct ieee80211_local *local = wiphy_priv(wiphy); 1331 struct sta_info *sta; 1332 struct ieee80211_sub_if_data *vlansdata; 1333 enum cfg80211_station_type statype; 1334 int err; 1335 1336 mutex_lock(&local->sta_mtx); 1337 1338 sta = sta_info_get_bss(sdata, mac); 1339 if (!sta) { 1340 err = -ENOENT; 1341 goto out_err; 1342 } 1343 1344 switch (sdata->vif.type) { 1345 case NL80211_IFTYPE_MESH_POINT: 1346 if (sdata->u.mesh.user_mpm) 1347 statype = CFG80211_STA_MESH_PEER_USER; 1348 else 1349 statype = CFG80211_STA_MESH_PEER_KERNEL; 1350 break; 1351 case NL80211_IFTYPE_ADHOC: 1352 statype = CFG80211_STA_IBSS; 1353 break; 1354 case NL80211_IFTYPE_STATION: 1355 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1356 statype = CFG80211_STA_AP_STA; 1357 break; 1358 } 1359 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1360 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1361 else 1362 statype = CFG80211_STA_TDLS_PEER_SETUP; 1363 break; 1364 case NL80211_IFTYPE_AP: 1365 case NL80211_IFTYPE_AP_VLAN: 1366 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 1367 statype = CFG80211_STA_AP_CLIENT; 1368 else 1369 statype = CFG80211_STA_AP_CLIENT_UNASSOC; 1370 break; 1371 default: 1372 err = -EOPNOTSUPP; 1373 goto out_err; 1374 } 1375 1376 err = cfg80211_check_station_change(wiphy, params, statype); 1377 if (err) 1378 goto out_err; 1379 1380 if (params->vlan && params->vlan != sta->sdata->dev) { 1381 bool prev_4addr = false; 1382 bool new_4addr = false; 1383 1384 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1385 1386 if (params->vlan->ieee80211_ptr->use_4addr) { 1387 if (vlansdata->u.vlan.sta) { 1388 err = -EBUSY; 1389 goto out_err; 1390 } 1391 1392 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1393 new_4addr = true; 1394 __ieee80211_check_fast_rx_iface(vlansdata); 1395 } 1396 1397 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1398 sta->sdata->u.vlan.sta) { 1399 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); 1400 prev_4addr = true; 1401 } 1402 1403 sta->sdata = vlansdata; 1404 ieee80211_check_fast_xmit(sta); 1405 1406 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1407 prev_4addr != new_4addr) { 1408 if (new_4addr) 1409 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1410 else 1411 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1412 } 1413 1414 ieee80211_send_layer2_update(sta); 1415 } 1416 1417 err = sta_apply_parameters(local, sta, params); 1418 if (err) 1419 goto out_err; 1420 1421 mutex_unlock(&local->sta_mtx); 1422 1423 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1424 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1425 sta->known_smps_mode != sta->sdata->bss->req_smps && 1426 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1427 sta_info_tx_streams(sta) != 1) { 1428 ht_dbg(sta->sdata, 1429 "%pM just authorized and MIMO capable - update SMPS\n", 1430 sta->sta.addr); 1431 ieee80211_send_smps_action(sta->sdata, 1432 sta->sdata->bss->req_smps, 1433 sta->sta.addr, 1434 sta->sdata->vif.bss_conf.bssid); 1435 } 1436 1437 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1438 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1439 ieee80211_recalc_ps(local); 1440 ieee80211_recalc_ps_vif(sdata); 1441 } 1442 1443 return 0; 1444 out_err: 1445 mutex_unlock(&local->sta_mtx); 1446 return err; 1447 } 1448 1449 #ifdef CONFIG_MAC80211_MESH 1450 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1451 const u8 *dst, const u8 *next_hop) 1452 { 1453 struct ieee80211_sub_if_data *sdata; 1454 struct mesh_path *mpath; 1455 struct sta_info *sta; 1456 1457 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1458 1459 rcu_read_lock(); 1460 sta = sta_info_get(sdata, next_hop); 1461 if (!sta) { 1462 rcu_read_unlock(); 1463 return -ENOENT; 1464 } 1465 1466 mpath = mesh_path_add(sdata, dst); 1467 if (IS_ERR(mpath)) { 1468 rcu_read_unlock(); 1469 return PTR_ERR(mpath); 1470 } 1471 1472 mesh_path_fix_nexthop(mpath, sta); 1473 1474 rcu_read_unlock(); 1475 return 0; 1476 } 1477 1478 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1479 const u8 *dst) 1480 { 1481 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1482 1483 if (dst) 1484 return mesh_path_del(sdata, dst); 1485 1486 mesh_path_flush_by_iface(sdata); 1487 return 0; 1488 } 1489 1490 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, 1491 const u8 *dst, const u8 *next_hop) 1492 { 1493 struct ieee80211_sub_if_data *sdata; 1494 struct mesh_path *mpath; 1495 struct sta_info *sta; 1496 1497 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1498 1499 rcu_read_lock(); 1500 1501 sta = sta_info_get(sdata, next_hop); 1502 if (!sta) { 1503 rcu_read_unlock(); 1504 return -ENOENT; 1505 } 1506 1507 mpath = mesh_path_lookup(sdata, dst); 1508 if (!mpath) { 1509 rcu_read_unlock(); 1510 return -ENOENT; 1511 } 1512 1513 mesh_path_fix_nexthop(mpath, sta); 1514 1515 rcu_read_unlock(); 1516 return 0; 1517 } 1518 1519 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1520 struct mpath_info *pinfo) 1521 { 1522 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1523 1524 if (next_hop_sta) 1525 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1526 else 1527 eth_zero_addr(next_hop); 1528 1529 memset(pinfo, 0, sizeof(*pinfo)); 1530 1531 pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation; 1532 1533 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1534 MPATH_INFO_SN | 1535 MPATH_INFO_METRIC | 1536 MPATH_INFO_EXPTIME | 1537 MPATH_INFO_DISCOVERY_TIMEOUT | 1538 MPATH_INFO_DISCOVERY_RETRIES | 1539 MPATH_INFO_FLAGS; 1540 1541 pinfo->frame_qlen = mpath->frame_queue.qlen; 1542 pinfo->sn = mpath->sn; 1543 pinfo->metric = mpath->metric; 1544 if (time_before(jiffies, mpath->exp_time)) 1545 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1546 pinfo->discovery_timeout = 1547 jiffies_to_msecs(mpath->discovery_timeout); 1548 pinfo->discovery_retries = mpath->discovery_retries; 1549 if (mpath->flags & MESH_PATH_ACTIVE) 1550 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1551 if (mpath->flags & MESH_PATH_RESOLVING) 1552 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1553 if (mpath->flags & MESH_PATH_SN_VALID) 1554 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1555 if (mpath->flags & MESH_PATH_FIXED) 1556 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1557 if (mpath->flags & MESH_PATH_RESOLVED) 1558 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1559 } 1560 1561 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1562 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1563 1564 { 1565 struct ieee80211_sub_if_data *sdata; 1566 struct mesh_path *mpath; 1567 1568 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1569 1570 rcu_read_lock(); 1571 mpath = mesh_path_lookup(sdata, dst); 1572 if (!mpath) { 1573 rcu_read_unlock(); 1574 return -ENOENT; 1575 } 1576 memcpy(dst, mpath->dst, ETH_ALEN); 1577 mpath_set_pinfo(mpath, next_hop, pinfo); 1578 rcu_read_unlock(); 1579 return 0; 1580 } 1581 1582 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1583 int idx, u8 *dst, u8 *next_hop, 1584 struct mpath_info *pinfo) 1585 { 1586 struct ieee80211_sub_if_data *sdata; 1587 struct mesh_path *mpath; 1588 1589 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1590 1591 rcu_read_lock(); 1592 mpath = mesh_path_lookup_by_idx(sdata, idx); 1593 if (!mpath) { 1594 rcu_read_unlock(); 1595 return -ENOENT; 1596 } 1597 memcpy(dst, mpath->dst, ETH_ALEN); 1598 mpath_set_pinfo(mpath, next_hop, pinfo); 1599 rcu_read_unlock(); 1600 return 0; 1601 } 1602 1603 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, 1604 struct mpath_info *pinfo) 1605 { 1606 memset(pinfo, 0, sizeof(*pinfo)); 1607 memcpy(mpp, mpath->mpp, ETH_ALEN); 1608 1609 pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation; 1610 } 1611 1612 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, 1613 u8 *dst, u8 *mpp, struct mpath_info *pinfo) 1614 1615 { 1616 struct ieee80211_sub_if_data *sdata; 1617 struct mesh_path *mpath; 1618 1619 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1620 1621 rcu_read_lock(); 1622 mpath = mpp_path_lookup(sdata, dst); 1623 if (!mpath) { 1624 rcu_read_unlock(); 1625 return -ENOENT; 1626 } 1627 memcpy(dst, mpath->dst, ETH_ALEN); 1628 mpp_set_pinfo(mpath, mpp, pinfo); 1629 rcu_read_unlock(); 1630 return 0; 1631 } 1632 1633 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, 1634 int idx, u8 *dst, u8 *mpp, 1635 struct mpath_info *pinfo) 1636 { 1637 struct ieee80211_sub_if_data *sdata; 1638 struct mesh_path *mpath; 1639 1640 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1641 1642 rcu_read_lock(); 1643 mpath = mpp_path_lookup_by_idx(sdata, idx); 1644 if (!mpath) { 1645 rcu_read_unlock(); 1646 return -ENOENT; 1647 } 1648 memcpy(dst, mpath->dst, ETH_ALEN); 1649 mpp_set_pinfo(mpath, mpp, pinfo); 1650 rcu_read_unlock(); 1651 return 0; 1652 } 1653 1654 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1655 struct net_device *dev, 1656 struct mesh_config *conf) 1657 { 1658 struct ieee80211_sub_if_data *sdata; 1659 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1660 1661 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1662 return 0; 1663 } 1664 1665 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1666 { 1667 return (mask >> (parm-1)) & 0x1; 1668 } 1669 1670 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1671 const struct mesh_setup *setup) 1672 { 1673 u8 *new_ie; 1674 const u8 *old_ie; 1675 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1676 struct ieee80211_sub_if_data, u.mesh); 1677 1678 /* allocate information elements */ 1679 new_ie = NULL; 1680 old_ie = ifmsh->ie; 1681 1682 if (setup->ie_len) { 1683 new_ie = kmemdup(setup->ie, setup->ie_len, 1684 GFP_KERNEL); 1685 if (!new_ie) 1686 return -ENOMEM; 1687 } 1688 ifmsh->ie_len = setup->ie_len; 1689 ifmsh->ie = new_ie; 1690 kfree(old_ie); 1691 1692 /* now copy the rest of the setup parameters */ 1693 ifmsh->mesh_id_len = setup->mesh_id_len; 1694 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1695 ifmsh->mesh_sp_id = setup->sync_method; 1696 ifmsh->mesh_pp_id = setup->path_sel_proto; 1697 ifmsh->mesh_pm_id = setup->path_metric; 1698 ifmsh->user_mpm = setup->user_mpm; 1699 ifmsh->mesh_auth_id = setup->auth_id; 1700 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1701 if (setup->is_authenticated) 1702 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1703 if (setup->is_secure) 1704 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1705 1706 /* mcast rate setting in Mesh Node */ 1707 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1708 sizeof(setup->mcast_rate)); 1709 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1710 1711 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1712 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1713 1714 return 0; 1715 } 1716 1717 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1718 struct net_device *dev, u32 mask, 1719 const struct mesh_config *nconf) 1720 { 1721 struct mesh_config *conf; 1722 struct ieee80211_sub_if_data *sdata; 1723 struct ieee80211_if_mesh *ifmsh; 1724 1725 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1726 ifmsh = &sdata->u.mesh; 1727 1728 /* Set the config options which we are interested in setting */ 1729 conf = &(sdata->u.mesh.mshcfg); 1730 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1731 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1732 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1733 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1734 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1735 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1736 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1737 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1738 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1739 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1740 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1741 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1742 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1743 conf->element_ttl = nconf->element_ttl; 1744 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1745 if (ifmsh->user_mpm) 1746 return -EBUSY; 1747 conf->auto_open_plinks = nconf->auto_open_plinks; 1748 } 1749 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1750 conf->dot11MeshNbrOffsetMaxNeighbor = 1751 nconf->dot11MeshNbrOffsetMaxNeighbor; 1752 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1753 conf->dot11MeshHWMPmaxPREQretries = 1754 nconf->dot11MeshHWMPmaxPREQretries; 1755 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1756 conf->path_refresh_time = nconf->path_refresh_time; 1757 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1758 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1759 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1760 conf->dot11MeshHWMPactivePathTimeout = 1761 nconf->dot11MeshHWMPactivePathTimeout; 1762 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1763 conf->dot11MeshHWMPpreqMinInterval = 1764 nconf->dot11MeshHWMPpreqMinInterval; 1765 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1766 conf->dot11MeshHWMPperrMinInterval = 1767 nconf->dot11MeshHWMPperrMinInterval; 1768 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1769 mask)) 1770 conf->dot11MeshHWMPnetDiameterTraversalTime = 1771 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1772 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1773 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1774 ieee80211_mesh_root_setup(ifmsh); 1775 } 1776 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1777 /* our current gate announcement implementation rides on root 1778 * announcements, so require this ifmsh to also be a root node 1779 * */ 1780 if (nconf->dot11MeshGateAnnouncementProtocol && 1781 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1782 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1783 ieee80211_mesh_root_setup(ifmsh); 1784 } 1785 conf->dot11MeshGateAnnouncementProtocol = 1786 nconf->dot11MeshGateAnnouncementProtocol; 1787 } 1788 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1789 conf->dot11MeshHWMPRannInterval = 1790 nconf->dot11MeshHWMPRannInterval; 1791 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1792 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1793 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1794 /* our RSSI threshold implementation is supported only for 1795 * devices that report signal in dBm. 1796 */ 1797 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM)) 1798 return -ENOTSUPP; 1799 conf->rssi_threshold = nconf->rssi_threshold; 1800 } 1801 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1802 conf->ht_opmode = nconf->ht_opmode; 1803 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1804 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1805 } 1806 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1807 conf->dot11MeshHWMPactivePathToRootTimeout = 1808 nconf->dot11MeshHWMPactivePathToRootTimeout; 1809 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1810 conf->dot11MeshHWMProotInterval = 1811 nconf->dot11MeshHWMProotInterval; 1812 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1813 conf->dot11MeshHWMPconfirmationInterval = 1814 nconf->dot11MeshHWMPconfirmationInterval; 1815 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1816 conf->power_mode = nconf->power_mode; 1817 ieee80211_mps_local_status_update(sdata); 1818 } 1819 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1820 conf->dot11MeshAwakeWindowDuration = 1821 nconf->dot11MeshAwakeWindowDuration; 1822 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1823 conf->plink_timeout = nconf->plink_timeout; 1824 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1825 return 0; 1826 } 1827 1828 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1829 const struct mesh_config *conf, 1830 const struct mesh_setup *setup) 1831 { 1832 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1833 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1834 int err; 1835 1836 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1837 err = copy_mesh_setup(ifmsh, setup); 1838 if (err) 1839 return err; 1840 1841 /* can mesh use other SMPS modes? */ 1842 sdata->smps_mode = IEEE80211_SMPS_OFF; 1843 sdata->needed_rx_chains = sdata->local->rx_chains; 1844 1845 mutex_lock(&sdata->local->mtx); 1846 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1847 IEEE80211_CHANCTX_SHARED); 1848 mutex_unlock(&sdata->local->mtx); 1849 if (err) 1850 return err; 1851 1852 return ieee80211_start_mesh(sdata); 1853 } 1854 1855 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1856 { 1857 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1858 1859 ieee80211_stop_mesh(sdata); 1860 mutex_lock(&sdata->local->mtx); 1861 ieee80211_vif_release_channel(sdata); 1862 mutex_unlock(&sdata->local->mtx); 1863 1864 return 0; 1865 } 1866 #endif 1867 1868 static int ieee80211_change_bss(struct wiphy *wiphy, 1869 struct net_device *dev, 1870 struct bss_parameters *params) 1871 { 1872 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1873 enum nl80211_band band; 1874 u32 changed = 0; 1875 1876 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 1877 return -ENOENT; 1878 1879 band = ieee80211_get_sdata_band(sdata); 1880 1881 if (params->use_cts_prot >= 0) { 1882 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1883 changed |= BSS_CHANGED_ERP_CTS_PROT; 1884 } 1885 if (params->use_short_preamble >= 0) { 1886 sdata->vif.bss_conf.use_short_preamble = 1887 params->use_short_preamble; 1888 changed |= BSS_CHANGED_ERP_PREAMBLE; 1889 } 1890 1891 if (!sdata->vif.bss_conf.use_short_slot && 1892 band == NL80211_BAND_5GHZ) { 1893 sdata->vif.bss_conf.use_short_slot = true; 1894 changed |= BSS_CHANGED_ERP_SLOT; 1895 } 1896 1897 if (params->use_short_slot_time >= 0) { 1898 sdata->vif.bss_conf.use_short_slot = 1899 params->use_short_slot_time; 1900 changed |= BSS_CHANGED_ERP_SLOT; 1901 } 1902 1903 if (params->basic_rates) { 1904 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1905 wiphy->bands[band], 1906 params->basic_rates, 1907 params->basic_rates_len, 1908 &sdata->vif.bss_conf.basic_rates); 1909 changed |= BSS_CHANGED_BASIC_RATES; 1910 } 1911 1912 if (params->ap_isolate >= 0) { 1913 if (params->ap_isolate) 1914 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1915 else 1916 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1917 ieee80211_check_fast_rx_iface(sdata); 1918 } 1919 1920 if (params->ht_opmode >= 0) { 1921 sdata->vif.bss_conf.ht_operation_mode = 1922 (u16) params->ht_opmode; 1923 changed |= BSS_CHANGED_HT; 1924 } 1925 1926 if (params->p2p_ctwindow >= 0) { 1927 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1928 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1929 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1930 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1931 changed |= BSS_CHANGED_P2P_PS; 1932 } 1933 1934 if (params->p2p_opp_ps > 0) { 1935 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1936 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1937 changed |= BSS_CHANGED_P2P_PS; 1938 } else if (params->p2p_opp_ps == 0) { 1939 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1940 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 1941 changed |= BSS_CHANGED_P2P_PS; 1942 } 1943 1944 ieee80211_bss_info_change_notify(sdata, changed); 1945 1946 return 0; 1947 } 1948 1949 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1950 struct net_device *dev, 1951 struct ieee80211_txq_params *params) 1952 { 1953 struct ieee80211_local *local = wiphy_priv(wiphy); 1954 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1955 struct ieee80211_tx_queue_params p; 1956 1957 if (!local->ops->conf_tx) 1958 return -EOPNOTSUPP; 1959 1960 if (local->hw.queues < IEEE80211_NUM_ACS) 1961 return -EOPNOTSUPP; 1962 1963 memset(&p, 0, sizeof(p)); 1964 p.aifs = params->aifs; 1965 p.cw_max = params->cwmax; 1966 p.cw_min = params->cwmin; 1967 p.txop = params->txop; 1968 1969 /* 1970 * Setting tx queue params disables u-apsd because it's only 1971 * called in master mode. 1972 */ 1973 p.uapsd = false; 1974 1975 sdata->tx_conf[params->ac] = p; 1976 if (drv_conf_tx(local, sdata, params->ac, &p)) { 1977 wiphy_debug(local->hw.wiphy, 1978 "failed to set TX queue parameters for AC %d\n", 1979 params->ac); 1980 return -EINVAL; 1981 } 1982 1983 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 1984 1985 return 0; 1986 } 1987 1988 #ifdef CONFIG_PM 1989 static int ieee80211_suspend(struct wiphy *wiphy, 1990 struct cfg80211_wowlan *wowlan) 1991 { 1992 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1993 } 1994 1995 static int ieee80211_resume(struct wiphy *wiphy) 1996 { 1997 return __ieee80211_resume(wiphy_priv(wiphy)); 1998 } 1999 #else 2000 #define ieee80211_suspend NULL 2001 #define ieee80211_resume NULL 2002 #endif 2003 2004 static int ieee80211_scan(struct wiphy *wiphy, 2005 struct cfg80211_scan_request *req) 2006 { 2007 struct ieee80211_sub_if_data *sdata; 2008 2009 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 2010 2011 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 2012 case NL80211_IFTYPE_STATION: 2013 case NL80211_IFTYPE_ADHOC: 2014 case NL80211_IFTYPE_MESH_POINT: 2015 case NL80211_IFTYPE_P2P_CLIENT: 2016 case NL80211_IFTYPE_P2P_DEVICE: 2017 break; 2018 case NL80211_IFTYPE_P2P_GO: 2019 if (sdata->local->ops->hw_scan) 2020 break; 2021 /* 2022 * FIXME: implement NoA while scanning in software, 2023 * for now fall through to allow scanning only when 2024 * beaconing hasn't been configured yet 2025 */ 2026 case NL80211_IFTYPE_AP: 2027 /* 2028 * If the scan has been forced (and the driver supports 2029 * forcing), don't care about being beaconing already. 2030 * This will create problems to the attached stations (e.g. all 2031 * the frames sent while scanning on other channel will be 2032 * lost) 2033 */ 2034 if (sdata->u.ap.beacon && 2035 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2036 !(req->flags & NL80211_SCAN_FLAG_AP))) 2037 return -EOPNOTSUPP; 2038 break; 2039 default: 2040 return -EOPNOTSUPP; 2041 } 2042 2043 return ieee80211_request_scan(sdata, req); 2044 } 2045 2046 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev) 2047 { 2048 ieee80211_scan_cancel(wiphy_priv(wiphy)); 2049 } 2050 2051 static int 2052 ieee80211_sched_scan_start(struct wiphy *wiphy, 2053 struct net_device *dev, 2054 struct cfg80211_sched_scan_request *req) 2055 { 2056 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2057 2058 if (!sdata->local->ops->sched_scan_start) 2059 return -EOPNOTSUPP; 2060 2061 return ieee80211_request_sched_scan_start(sdata, req); 2062 } 2063 2064 static int 2065 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2066 { 2067 struct ieee80211_local *local = wiphy_priv(wiphy); 2068 2069 if (!local->ops->sched_scan_stop) 2070 return -EOPNOTSUPP; 2071 2072 return ieee80211_request_sched_scan_stop(local); 2073 } 2074 2075 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2076 struct cfg80211_auth_request *req) 2077 { 2078 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2079 } 2080 2081 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2082 struct cfg80211_assoc_request *req) 2083 { 2084 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2085 } 2086 2087 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2088 struct cfg80211_deauth_request *req) 2089 { 2090 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2091 } 2092 2093 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2094 struct cfg80211_disassoc_request *req) 2095 { 2096 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2097 } 2098 2099 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2100 struct cfg80211_ibss_params *params) 2101 { 2102 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2103 } 2104 2105 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2106 { 2107 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2108 } 2109 2110 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, 2111 struct ocb_setup *setup) 2112 { 2113 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); 2114 } 2115 2116 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) 2117 { 2118 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2119 } 2120 2121 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2122 int rate[NUM_NL80211_BANDS]) 2123 { 2124 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2125 2126 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2127 sizeof(int) * NUM_NL80211_BANDS); 2128 2129 return 0; 2130 } 2131 2132 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2133 { 2134 struct ieee80211_local *local = wiphy_priv(wiphy); 2135 int err; 2136 2137 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2138 ieee80211_check_fast_xmit_all(local); 2139 2140 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2141 2142 if (err) { 2143 ieee80211_check_fast_xmit_all(local); 2144 return err; 2145 } 2146 } 2147 2148 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) || 2149 (changed & WIPHY_PARAM_DYN_ACK)) { 2150 s16 coverage_class; 2151 2152 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? 2153 wiphy->coverage_class : -1; 2154 err = drv_set_coverage_class(local, coverage_class); 2155 2156 if (err) 2157 return err; 2158 } 2159 2160 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2161 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2162 2163 if (err) 2164 return err; 2165 } 2166 2167 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2168 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2169 return -EINVAL; 2170 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2171 } 2172 if (changed & WIPHY_PARAM_RETRY_LONG) { 2173 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2174 return -EINVAL; 2175 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2176 } 2177 if (changed & 2178 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2179 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2180 2181 return 0; 2182 } 2183 2184 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2185 struct wireless_dev *wdev, 2186 enum nl80211_tx_power_setting type, int mbm) 2187 { 2188 struct ieee80211_local *local = wiphy_priv(wiphy); 2189 struct ieee80211_sub_if_data *sdata; 2190 enum nl80211_tx_power_setting txp_type = type; 2191 bool update_txp_type = false; 2192 2193 if (wdev) { 2194 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2195 2196 switch (type) { 2197 case NL80211_TX_POWER_AUTOMATIC: 2198 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2199 txp_type = NL80211_TX_POWER_LIMITED; 2200 break; 2201 case NL80211_TX_POWER_LIMITED: 2202 case NL80211_TX_POWER_FIXED: 2203 if (mbm < 0 || (mbm % 100)) 2204 return -EOPNOTSUPP; 2205 sdata->user_power_level = MBM_TO_DBM(mbm); 2206 break; 2207 } 2208 2209 if (txp_type != sdata->vif.bss_conf.txpower_type) { 2210 update_txp_type = true; 2211 sdata->vif.bss_conf.txpower_type = txp_type; 2212 } 2213 2214 ieee80211_recalc_txpower(sdata, update_txp_type); 2215 2216 return 0; 2217 } 2218 2219 switch (type) { 2220 case NL80211_TX_POWER_AUTOMATIC: 2221 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2222 txp_type = NL80211_TX_POWER_LIMITED; 2223 break; 2224 case NL80211_TX_POWER_LIMITED: 2225 case NL80211_TX_POWER_FIXED: 2226 if (mbm < 0 || (mbm % 100)) 2227 return -EOPNOTSUPP; 2228 local->user_power_level = MBM_TO_DBM(mbm); 2229 break; 2230 } 2231 2232 mutex_lock(&local->iflist_mtx); 2233 list_for_each_entry(sdata, &local->interfaces, list) { 2234 sdata->user_power_level = local->user_power_level; 2235 if (txp_type != sdata->vif.bss_conf.txpower_type) 2236 update_txp_type = true; 2237 sdata->vif.bss_conf.txpower_type = txp_type; 2238 } 2239 list_for_each_entry(sdata, &local->interfaces, list) 2240 ieee80211_recalc_txpower(sdata, update_txp_type); 2241 mutex_unlock(&local->iflist_mtx); 2242 2243 return 0; 2244 } 2245 2246 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2247 struct wireless_dev *wdev, 2248 int *dbm) 2249 { 2250 struct ieee80211_local *local = wiphy_priv(wiphy); 2251 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2252 2253 if (local->ops->get_txpower) 2254 return drv_get_txpower(local, sdata, dbm); 2255 2256 if (!local->use_chanctx) 2257 *dbm = local->hw.conf.power_level; 2258 else 2259 *dbm = sdata->vif.bss_conf.txpower; 2260 2261 return 0; 2262 } 2263 2264 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2265 const u8 *addr) 2266 { 2267 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2268 2269 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2270 2271 return 0; 2272 } 2273 2274 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2275 { 2276 struct ieee80211_local *local = wiphy_priv(wiphy); 2277 2278 drv_rfkill_poll(local); 2279 } 2280 2281 #ifdef CONFIG_NL80211_TESTMODE 2282 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2283 struct wireless_dev *wdev, 2284 void *data, int len) 2285 { 2286 struct ieee80211_local *local = wiphy_priv(wiphy); 2287 struct ieee80211_vif *vif = NULL; 2288 2289 if (!local->ops->testmode_cmd) 2290 return -EOPNOTSUPP; 2291 2292 if (wdev) { 2293 struct ieee80211_sub_if_data *sdata; 2294 2295 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2296 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2297 vif = &sdata->vif; 2298 } 2299 2300 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2301 } 2302 2303 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2304 struct sk_buff *skb, 2305 struct netlink_callback *cb, 2306 void *data, int len) 2307 { 2308 struct ieee80211_local *local = wiphy_priv(wiphy); 2309 2310 if (!local->ops->testmode_dump) 2311 return -EOPNOTSUPP; 2312 2313 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2314 } 2315 #endif 2316 2317 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2318 enum ieee80211_smps_mode smps_mode) 2319 { 2320 struct sta_info *sta; 2321 enum ieee80211_smps_mode old_req; 2322 2323 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2324 return -EINVAL; 2325 2326 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2327 return 0; 2328 2329 old_req = sdata->u.ap.req_smps; 2330 sdata->u.ap.req_smps = smps_mode; 2331 2332 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2333 if (old_req == smps_mode || 2334 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2335 return 0; 2336 2337 /* If no associated stations, there's no need to do anything */ 2338 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2339 sdata->smps_mode = smps_mode; 2340 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2341 return 0; 2342 } 2343 2344 ht_dbg(sdata, 2345 "SMPS %d requested in AP mode, sending Action frame to %d stations\n", 2346 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2347 2348 mutex_lock(&sdata->local->sta_mtx); 2349 list_for_each_entry(sta, &sdata->local->sta_list, list) { 2350 /* 2351 * Only stations associated to our AP and 2352 * associated VLANs 2353 */ 2354 if (sta->sdata->bss != &sdata->u.ap) 2355 continue; 2356 2357 /* This station doesn't support MIMO - skip it */ 2358 if (sta_info_tx_streams(sta) == 1) 2359 continue; 2360 2361 /* 2362 * Don't wake up a STA just to send the action frame 2363 * unless we are getting more restrictive. 2364 */ 2365 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2366 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2367 smps_mode)) { 2368 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n", 2369 sta->sta.addr); 2370 continue; 2371 } 2372 2373 /* 2374 * If the STA is not authorized, wait until it gets 2375 * authorized and the action frame will be sent then. 2376 */ 2377 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2378 continue; 2379 2380 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2381 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr, 2382 sdata->vif.bss_conf.bssid); 2383 } 2384 mutex_unlock(&sdata->local->sta_mtx); 2385 2386 sdata->smps_mode = smps_mode; 2387 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2388 2389 return 0; 2390 } 2391 2392 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2393 enum ieee80211_smps_mode smps_mode) 2394 { 2395 const u8 *ap; 2396 enum ieee80211_smps_mode old_req; 2397 int err; 2398 struct sta_info *sta; 2399 bool tdls_peer_found = false; 2400 2401 lockdep_assert_held(&sdata->wdev.mtx); 2402 2403 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2404 return -EINVAL; 2405 2406 old_req = sdata->u.mgd.req_smps; 2407 sdata->u.mgd.req_smps = smps_mode; 2408 2409 if (old_req == smps_mode && 2410 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2411 return 0; 2412 2413 /* 2414 * If not associated, or current association is not an HT 2415 * association, there's no need to do anything, just store 2416 * the new value until we associate. 2417 */ 2418 if (!sdata->u.mgd.associated || 2419 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2420 return 0; 2421 2422 ap = sdata->u.mgd.associated->bssid; 2423 2424 rcu_read_lock(); 2425 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) { 2426 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded || 2427 !test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2428 continue; 2429 2430 tdls_peer_found = true; 2431 break; 2432 } 2433 rcu_read_unlock(); 2434 2435 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2436 if (tdls_peer_found || !sdata->u.mgd.powersave) 2437 smps_mode = IEEE80211_SMPS_OFF; 2438 else 2439 smps_mode = IEEE80211_SMPS_DYNAMIC; 2440 } 2441 2442 /* send SM PS frame to AP */ 2443 err = ieee80211_send_smps_action(sdata, smps_mode, 2444 ap, ap); 2445 if (err) 2446 sdata->u.mgd.req_smps = old_req; 2447 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found) 2448 ieee80211_teardown_tdls_peers(sdata); 2449 2450 return err; 2451 } 2452 2453 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2454 bool enabled, int timeout) 2455 { 2456 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2457 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2458 2459 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2460 return -EOPNOTSUPP; 2461 2462 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) 2463 return -EOPNOTSUPP; 2464 2465 if (enabled == sdata->u.mgd.powersave && 2466 timeout == local->dynamic_ps_forced_timeout) 2467 return 0; 2468 2469 sdata->u.mgd.powersave = enabled; 2470 local->dynamic_ps_forced_timeout = timeout; 2471 2472 /* no change, but if automatic follow powersave */ 2473 sdata_lock(sdata); 2474 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2475 sdata_unlock(sdata); 2476 2477 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) 2478 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2479 2480 ieee80211_recalc_ps(local); 2481 ieee80211_recalc_ps_vif(sdata); 2482 2483 return 0; 2484 } 2485 2486 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2487 struct net_device *dev, 2488 s32 rssi_thold, u32 rssi_hyst) 2489 { 2490 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2491 struct ieee80211_vif *vif = &sdata->vif; 2492 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2493 2494 if (rssi_thold == bss_conf->cqm_rssi_thold && 2495 rssi_hyst == bss_conf->cqm_rssi_hyst) 2496 return 0; 2497 2498 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER && 2499 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) 2500 return -EOPNOTSUPP; 2501 2502 bss_conf->cqm_rssi_thold = rssi_thold; 2503 bss_conf->cqm_rssi_hyst = rssi_hyst; 2504 sdata->u.mgd.last_cqm_event_signal = 0; 2505 2506 /* tell the driver upon association, unless already associated */ 2507 if (sdata->u.mgd.associated && 2508 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2509 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2510 2511 return 0; 2512 } 2513 2514 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2515 struct net_device *dev, 2516 const u8 *addr, 2517 const struct cfg80211_bitrate_mask *mask) 2518 { 2519 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2520 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2521 int i, ret; 2522 2523 if (!ieee80211_sdata_running(sdata)) 2524 return -ENETDOWN; 2525 2526 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) { 2527 ret = drv_set_bitrate_mask(local, sdata, mask); 2528 if (ret) 2529 return ret; 2530 } 2531 2532 for (i = 0; i < NUM_NL80211_BANDS; i++) { 2533 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2534 int j; 2535 2536 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2537 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 2538 sizeof(mask->control[i].ht_mcs)); 2539 memcpy(sdata->rc_rateidx_vht_mcs_mask[i], 2540 mask->control[i].vht_mcs, 2541 sizeof(mask->control[i].vht_mcs)); 2542 2543 sdata->rc_has_mcs_mask[i] = false; 2544 sdata->rc_has_vht_mcs_mask[i] = false; 2545 if (!sband) 2546 continue; 2547 2548 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) { 2549 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2550 sdata->rc_has_mcs_mask[i] = true; 2551 break; 2552 } 2553 } 2554 2555 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) { 2556 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) { 2557 sdata->rc_has_vht_mcs_mask[i] = true; 2558 break; 2559 } 2560 } 2561 } 2562 2563 return 0; 2564 } 2565 2566 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2567 struct net_device *dev, 2568 struct cfg80211_chan_def *chandef, 2569 u32 cac_time_ms) 2570 { 2571 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2572 struct ieee80211_local *local = sdata->local; 2573 int err; 2574 2575 mutex_lock(&local->mtx); 2576 if (!list_empty(&local->roc_list) || local->scanning) { 2577 err = -EBUSY; 2578 goto out_unlock; 2579 } 2580 2581 /* whatever, but channel contexts should not complain about that one */ 2582 sdata->smps_mode = IEEE80211_SMPS_OFF; 2583 sdata->needed_rx_chains = local->rx_chains; 2584 2585 err = ieee80211_vif_use_channel(sdata, chandef, 2586 IEEE80211_CHANCTX_SHARED); 2587 if (err) 2588 goto out_unlock; 2589 2590 ieee80211_queue_delayed_work(&sdata->local->hw, 2591 &sdata->dfs_cac_timer_work, 2592 msecs_to_jiffies(cac_time_ms)); 2593 2594 out_unlock: 2595 mutex_unlock(&local->mtx); 2596 return err; 2597 } 2598 2599 static struct cfg80211_beacon_data * 2600 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2601 { 2602 struct cfg80211_beacon_data *new_beacon; 2603 u8 *pos; 2604 int len; 2605 2606 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2607 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2608 beacon->probe_resp_len; 2609 2610 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2611 if (!new_beacon) 2612 return NULL; 2613 2614 pos = (u8 *)(new_beacon + 1); 2615 if (beacon->head_len) { 2616 new_beacon->head_len = beacon->head_len; 2617 new_beacon->head = pos; 2618 memcpy(pos, beacon->head, beacon->head_len); 2619 pos += beacon->head_len; 2620 } 2621 if (beacon->tail_len) { 2622 new_beacon->tail_len = beacon->tail_len; 2623 new_beacon->tail = pos; 2624 memcpy(pos, beacon->tail, beacon->tail_len); 2625 pos += beacon->tail_len; 2626 } 2627 if (beacon->beacon_ies_len) { 2628 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 2629 new_beacon->beacon_ies = pos; 2630 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 2631 pos += beacon->beacon_ies_len; 2632 } 2633 if (beacon->proberesp_ies_len) { 2634 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 2635 new_beacon->proberesp_ies = pos; 2636 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 2637 pos += beacon->proberesp_ies_len; 2638 } 2639 if (beacon->assocresp_ies_len) { 2640 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 2641 new_beacon->assocresp_ies = pos; 2642 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 2643 pos += beacon->assocresp_ies_len; 2644 } 2645 if (beacon->probe_resp_len) { 2646 new_beacon->probe_resp_len = beacon->probe_resp_len; 2647 beacon->probe_resp = pos; 2648 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 2649 pos += beacon->probe_resp_len; 2650 } 2651 2652 return new_beacon; 2653 } 2654 2655 void ieee80211_csa_finish(struct ieee80211_vif *vif) 2656 { 2657 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2658 2659 ieee80211_queue_work(&sdata->local->hw, 2660 &sdata->csa_finalize_work); 2661 } 2662 EXPORT_SYMBOL(ieee80211_csa_finish); 2663 2664 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, 2665 u32 *changed) 2666 { 2667 int err; 2668 2669 switch (sdata->vif.type) { 2670 case NL80211_IFTYPE_AP: 2671 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, 2672 NULL); 2673 kfree(sdata->u.ap.next_beacon); 2674 sdata->u.ap.next_beacon = NULL; 2675 2676 if (err < 0) 2677 return err; 2678 *changed |= err; 2679 break; 2680 case NL80211_IFTYPE_ADHOC: 2681 err = ieee80211_ibss_finish_csa(sdata); 2682 if (err < 0) 2683 return err; 2684 *changed |= err; 2685 break; 2686 #ifdef CONFIG_MAC80211_MESH 2687 case NL80211_IFTYPE_MESH_POINT: 2688 err = ieee80211_mesh_finish_csa(sdata); 2689 if (err < 0) 2690 return err; 2691 *changed |= err; 2692 break; 2693 #endif 2694 default: 2695 WARN_ON(1); 2696 return -EINVAL; 2697 } 2698 2699 return 0; 2700 } 2701 2702 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2703 { 2704 struct ieee80211_local *local = sdata->local; 2705 u32 changed = 0; 2706 int err; 2707 2708 sdata_assert_lock(sdata); 2709 lockdep_assert_held(&local->mtx); 2710 lockdep_assert_held(&local->chanctx_mtx); 2711 2712 /* 2713 * using reservation isn't immediate as it may be deferred until later 2714 * with multi-vif. once reservation is complete it will re-schedule the 2715 * work with no reserved_chanctx so verify chandef to check if it 2716 * completed successfully 2717 */ 2718 2719 if (sdata->reserved_chanctx) { 2720 /* 2721 * with multi-vif csa driver may call ieee80211_csa_finish() 2722 * many times while waiting for other interfaces to use their 2723 * reservations 2724 */ 2725 if (sdata->reserved_ready) 2726 return 0; 2727 2728 return ieee80211_vif_use_reserved_context(sdata); 2729 } 2730 2731 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, 2732 &sdata->csa_chandef)) 2733 return -EINVAL; 2734 2735 sdata->vif.csa_active = false; 2736 2737 err = ieee80211_set_after_csa_beacon(sdata, &changed); 2738 if (err) 2739 return err; 2740 2741 ieee80211_bss_info_change_notify(sdata, changed); 2742 2743 if (sdata->csa_block_tx) { 2744 ieee80211_wake_vif_queues(local, sdata, 2745 IEEE80211_QUEUE_STOP_REASON_CSA); 2746 sdata->csa_block_tx = false; 2747 } 2748 2749 err = drv_post_channel_switch(sdata); 2750 if (err) 2751 return err; 2752 2753 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 2754 2755 return 0; 2756 } 2757 2758 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2759 { 2760 if (__ieee80211_csa_finalize(sdata)) { 2761 sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); 2762 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, 2763 GFP_KERNEL); 2764 } 2765 } 2766 2767 void ieee80211_csa_finalize_work(struct work_struct *work) 2768 { 2769 struct ieee80211_sub_if_data *sdata = 2770 container_of(work, struct ieee80211_sub_if_data, 2771 csa_finalize_work); 2772 struct ieee80211_local *local = sdata->local; 2773 2774 sdata_lock(sdata); 2775 mutex_lock(&local->mtx); 2776 mutex_lock(&local->chanctx_mtx); 2777 2778 /* AP might have been stopped while waiting for the lock. */ 2779 if (!sdata->vif.csa_active) 2780 goto unlock; 2781 2782 if (!ieee80211_sdata_running(sdata)) 2783 goto unlock; 2784 2785 ieee80211_csa_finalize(sdata); 2786 2787 unlock: 2788 mutex_unlock(&local->chanctx_mtx); 2789 mutex_unlock(&local->mtx); 2790 sdata_unlock(sdata); 2791 } 2792 2793 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, 2794 struct cfg80211_csa_settings *params, 2795 u32 *changed) 2796 { 2797 struct ieee80211_csa_settings csa = {}; 2798 int err; 2799 2800 switch (sdata->vif.type) { 2801 case NL80211_IFTYPE_AP: 2802 sdata->u.ap.next_beacon = 2803 cfg80211_beacon_dup(¶ms->beacon_after); 2804 if (!sdata->u.ap.next_beacon) 2805 return -ENOMEM; 2806 2807 /* 2808 * With a count of 0, we don't have to wait for any 2809 * TBTT before switching, so complete the CSA 2810 * immediately. In theory, with a count == 1 we 2811 * should delay the switch until just before the next 2812 * TBTT, but that would complicate things so we switch 2813 * immediately too. If we would delay the switch 2814 * until the next TBTT, we would have to set the probe 2815 * response here. 2816 * 2817 * TODO: A channel switch with count <= 1 without 2818 * sending a CSA action frame is kind of useless, 2819 * because the clients won't know we're changing 2820 * channels. The action frame must be implemented 2821 * either here or in the userspace. 2822 */ 2823 if (params->count <= 1) 2824 break; 2825 2826 if ((params->n_counter_offsets_beacon > 2827 IEEE80211_MAX_CSA_COUNTERS_NUM) || 2828 (params->n_counter_offsets_presp > 2829 IEEE80211_MAX_CSA_COUNTERS_NUM)) 2830 return -EINVAL; 2831 2832 csa.counter_offsets_beacon = params->counter_offsets_beacon; 2833 csa.counter_offsets_presp = params->counter_offsets_presp; 2834 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; 2835 csa.n_counter_offsets_presp = params->n_counter_offsets_presp; 2836 csa.count = params->count; 2837 2838 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa, &csa); 2839 if (err < 0) { 2840 kfree(sdata->u.ap.next_beacon); 2841 return err; 2842 } 2843 *changed |= err; 2844 2845 break; 2846 case NL80211_IFTYPE_ADHOC: 2847 if (!sdata->vif.bss_conf.ibss_joined) 2848 return -EINVAL; 2849 2850 if (params->chandef.width != sdata->u.ibss.chandef.width) 2851 return -EINVAL; 2852 2853 switch (params->chandef.width) { 2854 case NL80211_CHAN_WIDTH_40: 2855 if (cfg80211_get_chandef_type(¶ms->chandef) != 2856 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 2857 return -EINVAL; 2858 case NL80211_CHAN_WIDTH_5: 2859 case NL80211_CHAN_WIDTH_10: 2860 case NL80211_CHAN_WIDTH_20_NOHT: 2861 case NL80211_CHAN_WIDTH_20: 2862 break; 2863 default: 2864 return -EINVAL; 2865 } 2866 2867 /* changes into another band are not supported */ 2868 if (sdata->u.ibss.chandef.chan->band != 2869 params->chandef.chan->band) 2870 return -EINVAL; 2871 2872 /* see comments in the NL80211_IFTYPE_AP block */ 2873 if (params->count > 1) { 2874 err = ieee80211_ibss_csa_beacon(sdata, params); 2875 if (err < 0) 2876 return err; 2877 *changed |= err; 2878 } 2879 2880 ieee80211_send_action_csa(sdata, params); 2881 2882 break; 2883 #ifdef CONFIG_MAC80211_MESH 2884 case NL80211_IFTYPE_MESH_POINT: { 2885 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 2886 2887 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 2888 return -EINVAL; 2889 2890 /* changes into another band are not supported */ 2891 if (sdata->vif.bss_conf.chandef.chan->band != 2892 params->chandef.chan->band) 2893 return -EINVAL; 2894 2895 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { 2896 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; 2897 if (!ifmsh->pre_value) 2898 ifmsh->pre_value = 1; 2899 else 2900 ifmsh->pre_value++; 2901 } 2902 2903 /* see comments in the NL80211_IFTYPE_AP block */ 2904 if (params->count > 1) { 2905 err = ieee80211_mesh_csa_beacon(sdata, params); 2906 if (err < 0) { 2907 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; 2908 return err; 2909 } 2910 *changed |= err; 2911 } 2912 2913 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) 2914 ieee80211_send_action_csa(sdata, params); 2915 2916 break; 2917 } 2918 #endif 2919 default: 2920 return -EOPNOTSUPP; 2921 } 2922 2923 return 0; 2924 } 2925 2926 static int 2927 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2928 struct cfg80211_csa_settings *params) 2929 { 2930 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2931 struct ieee80211_local *local = sdata->local; 2932 struct ieee80211_channel_switch ch_switch; 2933 struct ieee80211_chanctx_conf *conf; 2934 struct ieee80211_chanctx *chanctx; 2935 u32 changed = 0; 2936 int err; 2937 2938 sdata_assert_lock(sdata); 2939 lockdep_assert_held(&local->mtx); 2940 2941 if (!list_empty(&local->roc_list) || local->scanning) 2942 return -EBUSY; 2943 2944 if (sdata->wdev.cac_started) 2945 return -EBUSY; 2946 2947 if (cfg80211_chandef_identical(¶ms->chandef, 2948 &sdata->vif.bss_conf.chandef)) 2949 return -EINVAL; 2950 2951 /* don't allow another channel switch if one is already active. */ 2952 if (sdata->vif.csa_active) 2953 return -EBUSY; 2954 2955 mutex_lock(&local->chanctx_mtx); 2956 conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 2957 lockdep_is_held(&local->chanctx_mtx)); 2958 if (!conf) { 2959 err = -EBUSY; 2960 goto out; 2961 } 2962 2963 chanctx = container_of(conf, struct ieee80211_chanctx, conf); 2964 2965 ch_switch.timestamp = 0; 2966 ch_switch.device_timestamp = 0; 2967 ch_switch.block_tx = params->block_tx; 2968 ch_switch.chandef = params->chandef; 2969 ch_switch.count = params->count; 2970 2971 err = drv_pre_channel_switch(sdata, &ch_switch); 2972 if (err) 2973 goto out; 2974 2975 err = ieee80211_vif_reserve_chanctx(sdata, ¶ms->chandef, 2976 chanctx->mode, 2977 params->radar_required); 2978 if (err) 2979 goto out; 2980 2981 /* if reservation is invalid then this will fail */ 2982 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0); 2983 if (err) { 2984 ieee80211_vif_unreserve_chanctx(sdata); 2985 goto out; 2986 } 2987 2988 err = ieee80211_set_csa_beacon(sdata, params, &changed); 2989 if (err) { 2990 ieee80211_vif_unreserve_chanctx(sdata); 2991 goto out; 2992 } 2993 2994 sdata->csa_chandef = params->chandef; 2995 sdata->csa_block_tx = params->block_tx; 2996 sdata->vif.csa_active = true; 2997 2998 if (sdata->csa_block_tx) 2999 ieee80211_stop_vif_queues(local, sdata, 3000 IEEE80211_QUEUE_STOP_REASON_CSA); 3001 3002 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef, 3003 params->count); 3004 3005 if (changed) { 3006 ieee80211_bss_info_change_notify(sdata, changed); 3007 drv_channel_switch_beacon(sdata, ¶ms->chandef); 3008 } else { 3009 /* if the beacon didn't change, we can finalize immediately */ 3010 ieee80211_csa_finalize(sdata); 3011 } 3012 3013 out: 3014 mutex_unlock(&local->chanctx_mtx); 3015 return err; 3016 } 3017 3018 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3019 struct cfg80211_csa_settings *params) 3020 { 3021 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3022 struct ieee80211_local *local = sdata->local; 3023 int err; 3024 3025 mutex_lock(&local->mtx); 3026 err = __ieee80211_channel_switch(wiphy, dev, params); 3027 mutex_unlock(&local->mtx); 3028 3029 return err; 3030 } 3031 3032 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local) 3033 { 3034 lockdep_assert_held(&local->mtx); 3035 3036 local->roc_cookie_counter++; 3037 3038 /* wow, you wrapped 64 bits ... more likely a bug */ 3039 if (WARN_ON(local->roc_cookie_counter == 0)) 3040 local->roc_cookie_counter++; 3041 3042 return local->roc_cookie_counter; 3043 } 3044 3045 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 3046 u64 *cookie, gfp_t gfp) 3047 { 3048 unsigned long spin_flags; 3049 struct sk_buff *ack_skb; 3050 int id; 3051 3052 ack_skb = skb_copy(skb, gfp); 3053 if (!ack_skb) 3054 return -ENOMEM; 3055 3056 spin_lock_irqsave(&local->ack_status_lock, spin_flags); 3057 id = idr_alloc(&local->ack_status_frames, ack_skb, 3058 1, 0x10000, GFP_ATOMIC); 3059 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags); 3060 3061 if (id < 0) { 3062 kfree_skb(ack_skb); 3063 return -ENOMEM; 3064 } 3065 3066 IEEE80211_SKB_CB(skb)->ack_frame_id = id; 3067 3068 *cookie = ieee80211_mgmt_tx_cookie(local); 3069 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie; 3070 3071 return 0; 3072 } 3073 3074 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3075 struct wireless_dev *wdev, 3076 u16 frame_type, bool reg) 3077 { 3078 struct ieee80211_local *local = wiphy_priv(wiphy); 3079 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3080 3081 switch (frame_type) { 3082 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3083 if (reg) { 3084 local->probe_req_reg++; 3085 sdata->vif.probe_req_reg++; 3086 } else { 3087 if (local->probe_req_reg) 3088 local->probe_req_reg--; 3089 3090 if (sdata->vif.probe_req_reg) 3091 sdata->vif.probe_req_reg--; 3092 } 3093 3094 if (!local->open_count) 3095 break; 3096 3097 if (sdata->vif.probe_req_reg == 1) 3098 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ, 3099 FIF_PROBE_REQ); 3100 else if (sdata->vif.probe_req_reg == 0) 3101 drv_config_iface_filter(local, sdata, 0, 3102 FIF_PROBE_REQ); 3103 3104 ieee80211_configure_filter(local); 3105 break; 3106 default: 3107 break; 3108 } 3109 } 3110 3111 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3112 { 3113 struct ieee80211_local *local = wiphy_priv(wiphy); 3114 3115 if (local->started) 3116 return -EOPNOTSUPP; 3117 3118 return drv_set_antenna(local, tx_ant, rx_ant); 3119 } 3120 3121 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3122 { 3123 struct ieee80211_local *local = wiphy_priv(wiphy); 3124 3125 return drv_get_antenna(local, tx_ant, rx_ant); 3126 } 3127 3128 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3129 struct net_device *dev, 3130 struct cfg80211_gtk_rekey_data *data) 3131 { 3132 struct ieee80211_local *local = wiphy_priv(wiphy); 3133 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3134 3135 if (!local->ops->set_rekey_data) 3136 return -EOPNOTSUPP; 3137 3138 drv_set_rekey_data(local, sdata, data); 3139 3140 return 0; 3141 } 3142 3143 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3144 const u8 *peer, u64 *cookie) 3145 { 3146 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3147 struct ieee80211_local *local = sdata->local; 3148 struct ieee80211_qos_hdr *nullfunc; 3149 struct sk_buff *skb; 3150 int size = sizeof(*nullfunc); 3151 __le16 fc; 3152 bool qos; 3153 struct ieee80211_tx_info *info; 3154 struct sta_info *sta; 3155 struct ieee80211_chanctx_conf *chanctx_conf; 3156 enum nl80211_band band; 3157 int ret; 3158 3159 /* the lock is needed to assign the cookie later */ 3160 mutex_lock(&local->mtx); 3161 3162 rcu_read_lock(); 3163 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3164 if (WARN_ON(!chanctx_conf)) { 3165 ret = -EINVAL; 3166 goto unlock; 3167 } 3168 band = chanctx_conf->def.chan->band; 3169 sta = sta_info_get_bss(sdata, peer); 3170 if (sta) { 3171 qos = sta->sta.wme; 3172 } else { 3173 ret = -ENOLINK; 3174 goto unlock; 3175 } 3176 3177 if (qos) { 3178 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3179 IEEE80211_STYPE_QOS_NULLFUNC | 3180 IEEE80211_FCTL_FROMDS); 3181 } else { 3182 size -= 2; 3183 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3184 IEEE80211_STYPE_NULLFUNC | 3185 IEEE80211_FCTL_FROMDS); 3186 } 3187 3188 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3189 if (!skb) { 3190 ret = -ENOMEM; 3191 goto unlock; 3192 } 3193 3194 skb->dev = dev; 3195 3196 skb_reserve(skb, local->hw.extra_tx_headroom); 3197 3198 nullfunc = (void *) skb_put(skb, size); 3199 nullfunc->frame_control = fc; 3200 nullfunc->duration_id = 0; 3201 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3202 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3203 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3204 nullfunc->seq_ctrl = 0; 3205 3206 info = IEEE80211_SKB_CB(skb); 3207 3208 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3209 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3210 info->band = band; 3211 3212 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3213 skb->priority = 7; 3214 if (qos) 3215 nullfunc->qos_ctrl = cpu_to_le16(7); 3216 3217 ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC); 3218 if (ret) { 3219 kfree_skb(skb); 3220 goto unlock; 3221 } 3222 3223 local_bh_disable(); 3224 ieee80211_xmit(sdata, sta, skb); 3225 local_bh_enable(); 3226 3227 ret = 0; 3228 unlock: 3229 rcu_read_unlock(); 3230 mutex_unlock(&local->mtx); 3231 3232 return ret; 3233 } 3234 3235 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3236 struct wireless_dev *wdev, 3237 struct cfg80211_chan_def *chandef) 3238 { 3239 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3240 struct ieee80211_local *local = wiphy_priv(wiphy); 3241 struct ieee80211_chanctx_conf *chanctx_conf; 3242 int ret = -ENODATA; 3243 3244 rcu_read_lock(); 3245 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3246 if (chanctx_conf) { 3247 *chandef = sdata->vif.bss_conf.chandef; 3248 ret = 0; 3249 } else if (local->open_count > 0 && 3250 local->open_count == local->monitors && 3251 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3252 if (local->use_chanctx) 3253 *chandef = local->monitor_chandef; 3254 else 3255 *chandef = local->_oper_chandef; 3256 ret = 0; 3257 } 3258 rcu_read_unlock(); 3259 3260 return ret; 3261 } 3262 3263 #ifdef CONFIG_PM 3264 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3265 { 3266 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3267 } 3268 #endif 3269 3270 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3271 struct net_device *dev, 3272 struct cfg80211_qos_map *qos_map) 3273 { 3274 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3275 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3276 3277 if (qos_map) { 3278 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3279 if (!new_qos_map) 3280 return -ENOMEM; 3281 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3282 } else { 3283 /* A NULL qos_map was passed to disable QoS mapping */ 3284 new_qos_map = NULL; 3285 } 3286 3287 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3288 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3289 if (old_qos_map) 3290 kfree_rcu(old_qos_map, rcu_head); 3291 3292 return 0; 3293 } 3294 3295 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, 3296 struct net_device *dev, 3297 struct cfg80211_chan_def *chandef) 3298 { 3299 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3300 int ret; 3301 u32 changed = 0; 3302 3303 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed); 3304 if (ret == 0) 3305 ieee80211_bss_info_change_notify(sdata, changed); 3306 3307 return ret; 3308 } 3309 3310 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3311 u8 tsid, const u8 *peer, u8 up, 3312 u16 admitted_time) 3313 { 3314 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3315 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3316 int ac = ieee802_1d_to_ac[up]; 3317 3318 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3319 return -EOPNOTSUPP; 3320 3321 if (!(sdata->wmm_acm & BIT(up))) 3322 return -EINVAL; 3323 3324 if (ifmgd->tx_tspec[ac].admitted_time) 3325 return -EBUSY; 3326 3327 if (admitted_time) { 3328 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; 3329 ifmgd->tx_tspec[ac].tsid = tsid; 3330 ifmgd->tx_tspec[ac].up = up; 3331 } 3332 3333 return 0; 3334 } 3335 3336 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3337 u8 tsid, const u8 *peer) 3338 { 3339 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3340 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3341 struct ieee80211_local *local = wiphy_priv(wiphy); 3342 int ac; 3343 3344 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 3345 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; 3346 3347 /* skip unused entries */ 3348 if (!tx_tspec->admitted_time) 3349 continue; 3350 3351 if (tx_tspec->tsid != tsid) 3352 continue; 3353 3354 /* due to this new packets will be reassigned to non-ACM ACs */ 3355 tx_tspec->up = -1; 3356 3357 /* Make sure that all packets have been sent to avoid to 3358 * restore the QoS params on packets that are still on the 3359 * queues. 3360 */ 3361 synchronize_net(); 3362 ieee80211_flush_queues(local, sdata, false); 3363 3364 /* restore the normal QoS parameters 3365 * (unconditionally to avoid races) 3366 */ 3367 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; 3368 tx_tspec->downgraded = false; 3369 ieee80211_sta_handle_tspec_ac_params(sdata); 3370 3371 /* finally clear all the data */ 3372 memset(tx_tspec, 0, sizeof(*tx_tspec)); 3373 3374 return 0; 3375 } 3376 3377 return -ENOENT; 3378 } 3379 3380 const struct cfg80211_ops mac80211_config_ops = { 3381 .add_virtual_intf = ieee80211_add_iface, 3382 .del_virtual_intf = ieee80211_del_iface, 3383 .change_virtual_intf = ieee80211_change_iface, 3384 .start_p2p_device = ieee80211_start_p2p_device, 3385 .stop_p2p_device = ieee80211_stop_p2p_device, 3386 .add_key = ieee80211_add_key, 3387 .del_key = ieee80211_del_key, 3388 .get_key = ieee80211_get_key, 3389 .set_default_key = ieee80211_config_default_key, 3390 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3391 .start_ap = ieee80211_start_ap, 3392 .change_beacon = ieee80211_change_beacon, 3393 .stop_ap = ieee80211_stop_ap, 3394 .add_station = ieee80211_add_station, 3395 .del_station = ieee80211_del_station, 3396 .change_station = ieee80211_change_station, 3397 .get_station = ieee80211_get_station, 3398 .dump_station = ieee80211_dump_station, 3399 .dump_survey = ieee80211_dump_survey, 3400 #ifdef CONFIG_MAC80211_MESH 3401 .add_mpath = ieee80211_add_mpath, 3402 .del_mpath = ieee80211_del_mpath, 3403 .change_mpath = ieee80211_change_mpath, 3404 .get_mpath = ieee80211_get_mpath, 3405 .dump_mpath = ieee80211_dump_mpath, 3406 .get_mpp = ieee80211_get_mpp, 3407 .dump_mpp = ieee80211_dump_mpp, 3408 .update_mesh_config = ieee80211_update_mesh_config, 3409 .get_mesh_config = ieee80211_get_mesh_config, 3410 .join_mesh = ieee80211_join_mesh, 3411 .leave_mesh = ieee80211_leave_mesh, 3412 #endif 3413 .join_ocb = ieee80211_join_ocb, 3414 .leave_ocb = ieee80211_leave_ocb, 3415 .change_bss = ieee80211_change_bss, 3416 .set_txq_params = ieee80211_set_txq_params, 3417 .set_monitor_channel = ieee80211_set_monitor_channel, 3418 .suspend = ieee80211_suspend, 3419 .resume = ieee80211_resume, 3420 .scan = ieee80211_scan, 3421 .abort_scan = ieee80211_abort_scan, 3422 .sched_scan_start = ieee80211_sched_scan_start, 3423 .sched_scan_stop = ieee80211_sched_scan_stop, 3424 .auth = ieee80211_auth, 3425 .assoc = ieee80211_assoc, 3426 .deauth = ieee80211_deauth, 3427 .disassoc = ieee80211_disassoc, 3428 .join_ibss = ieee80211_join_ibss, 3429 .leave_ibss = ieee80211_leave_ibss, 3430 .set_mcast_rate = ieee80211_set_mcast_rate, 3431 .set_wiphy_params = ieee80211_set_wiphy_params, 3432 .set_tx_power = ieee80211_set_tx_power, 3433 .get_tx_power = ieee80211_get_tx_power, 3434 .set_wds_peer = ieee80211_set_wds_peer, 3435 .rfkill_poll = ieee80211_rfkill_poll, 3436 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3437 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3438 .set_power_mgmt = ieee80211_set_power_mgmt, 3439 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3440 .remain_on_channel = ieee80211_remain_on_channel, 3441 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3442 .mgmt_tx = ieee80211_mgmt_tx, 3443 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3444 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3445 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3446 .set_antenna = ieee80211_set_antenna, 3447 .get_antenna = ieee80211_get_antenna, 3448 .set_rekey_data = ieee80211_set_rekey_data, 3449 .tdls_oper = ieee80211_tdls_oper, 3450 .tdls_mgmt = ieee80211_tdls_mgmt, 3451 .tdls_channel_switch = ieee80211_tdls_channel_switch, 3452 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, 3453 .probe_client = ieee80211_probe_client, 3454 .set_noack_map = ieee80211_set_noack_map, 3455 #ifdef CONFIG_PM 3456 .set_wakeup = ieee80211_set_wakeup, 3457 #endif 3458 .get_channel = ieee80211_cfg_get_channel, 3459 .start_radar_detection = ieee80211_start_radar_detection, 3460 .channel_switch = ieee80211_channel_switch, 3461 .set_qos_map = ieee80211_set_qos_map, 3462 .set_ap_chanwidth = ieee80211_set_ap_chanwidth, 3463 .add_tx_ts = ieee80211_add_tx_ts, 3464 .del_tx_ts = ieee80211_del_tx_ts, 3465 }; 3466