1 /* 2 * Copyright 2002-2005, Instant802 Networks, Inc. 3 * Copyright 2005-2006, Devicescape Software, Inc. 4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 5 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> 6 * Copyright 2013-2014 Intel Mobile Communications GmbH 7 * Copyright (C) 2015-2017 Intel Deutschland GmbH 8 * Copyright (C) 2018 Intel Corporation 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13 * 14 * utilities for mac80211 15 */ 16 17 #include <net/mac80211.h> 18 #include <linux/netdevice.h> 19 #include <linux/export.h> 20 #include <linux/types.h> 21 #include <linux/slab.h> 22 #include <linux/skbuff.h> 23 #include <linux/etherdevice.h> 24 #include <linux/if_arp.h> 25 #include <linux/bitmap.h> 26 #include <linux/crc32.h> 27 #include <net/net_namespace.h> 28 #include <net/cfg80211.h> 29 #include <net/rtnetlink.h> 30 31 #include "ieee80211_i.h" 32 #include "driver-ops.h" 33 #include "rate.h" 34 #include "mesh.h" 35 #include "wme.h" 36 #include "led.h" 37 #include "wep.h" 38 39 /* privid for wiphys to determine whether they belong to us or not */ 40 const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid; 41 42 struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) 43 { 44 struct ieee80211_local *local; 45 BUG_ON(!wiphy); 46 47 local = wiphy_priv(wiphy); 48 return &local->hw; 49 } 50 EXPORT_SYMBOL(wiphy_to_ieee80211_hw); 51 52 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) 53 { 54 struct sk_buff *skb; 55 struct ieee80211_hdr *hdr; 56 57 skb_queue_walk(&tx->skbs, skb) { 58 hdr = (struct ieee80211_hdr *) skb->data; 59 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 60 } 61 } 62 63 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 64 int rate, int erp, int short_preamble, 65 int shift) 66 { 67 int dur; 68 69 /* calculate duration (in microseconds, rounded up to next higher 70 * integer if it includes a fractional microsecond) to send frame of 71 * len bytes (does not include FCS) at the given rate. Duration will 72 * also include SIFS. 73 * 74 * rate is in 100 kbps, so divident is multiplied by 10 in the 75 * DIV_ROUND_UP() operations. 76 * 77 * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and 78 * is assumed to be 0 otherwise. 79 */ 80 81 if (band == NL80211_BAND_5GHZ || erp) { 82 /* 83 * OFDM: 84 * 85 * N_DBPS = DATARATE x 4 86 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) 87 * (16 = SIGNAL time, 6 = tail bits) 88 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext 89 * 90 * T_SYM = 4 usec 91 * 802.11a - 18.5.2: aSIFSTime = 16 usec 92 * 802.11g - 19.8.4: aSIFSTime = 10 usec + 93 * signal ext = 6 usec 94 */ 95 dur = 16; /* SIFS + signal ext */ 96 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ 97 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ 98 99 /* IEEE 802.11-2012 18.3.2.4: all values above are: 100 * * times 4 for 5 MHz 101 * * times 2 for 10 MHz 102 */ 103 dur *= 1 << shift; 104 105 /* rates should already consider the channel bandwidth, 106 * don't apply divisor again. 107 */ 108 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, 109 4 * rate); /* T_SYM x N_SYM */ 110 } else { 111 /* 112 * 802.11b or 802.11g with 802.11b compatibility: 113 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + 114 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. 115 * 116 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 117 * aSIFSTime = 10 usec 118 * aPreambleLength = 144 usec or 72 usec with short preamble 119 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble 120 */ 121 dur = 10; /* aSIFSTime = 10 usec */ 122 dur += short_preamble ? (72 + 24) : (144 + 48); 123 124 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); 125 } 126 127 return dur; 128 } 129 130 /* Exported duration function for driver use */ 131 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, 132 struct ieee80211_vif *vif, 133 enum nl80211_band band, 134 size_t frame_len, 135 struct ieee80211_rate *rate) 136 { 137 struct ieee80211_sub_if_data *sdata; 138 u16 dur; 139 int erp, shift = 0; 140 bool short_preamble = false; 141 142 erp = 0; 143 if (vif) { 144 sdata = vif_to_sdata(vif); 145 short_preamble = sdata->vif.bss_conf.use_short_preamble; 146 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) 147 erp = rate->flags & IEEE80211_RATE_ERP_G; 148 shift = ieee80211_vif_get_shift(vif); 149 } 150 151 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, 152 short_preamble, shift); 153 154 return cpu_to_le16(dur); 155 } 156 EXPORT_SYMBOL(ieee80211_generic_frame_duration); 157 158 __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, 159 struct ieee80211_vif *vif, size_t frame_len, 160 const struct ieee80211_tx_info *frame_txctl) 161 { 162 struct ieee80211_local *local = hw_to_local(hw); 163 struct ieee80211_rate *rate; 164 struct ieee80211_sub_if_data *sdata; 165 bool short_preamble; 166 int erp, shift = 0, bitrate; 167 u16 dur; 168 struct ieee80211_supported_band *sband; 169 170 sband = local->hw.wiphy->bands[frame_txctl->band]; 171 172 short_preamble = false; 173 174 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 175 176 erp = 0; 177 if (vif) { 178 sdata = vif_to_sdata(vif); 179 short_preamble = sdata->vif.bss_conf.use_short_preamble; 180 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) 181 erp = rate->flags & IEEE80211_RATE_ERP_G; 182 shift = ieee80211_vif_get_shift(vif); 183 } 184 185 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); 186 187 /* CTS duration */ 188 dur = ieee80211_frame_duration(sband->band, 10, bitrate, 189 erp, short_preamble, shift); 190 /* Data frame duration */ 191 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, 192 erp, short_preamble, shift); 193 /* ACK duration */ 194 dur += ieee80211_frame_duration(sband->band, 10, bitrate, 195 erp, short_preamble, shift); 196 197 return cpu_to_le16(dur); 198 } 199 EXPORT_SYMBOL(ieee80211_rts_duration); 200 201 __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, 202 struct ieee80211_vif *vif, 203 size_t frame_len, 204 const struct ieee80211_tx_info *frame_txctl) 205 { 206 struct ieee80211_local *local = hw_to_local(hw); 207 struct ieee80211_rate *rate; 208 struct ieee80211_sub_if_data *sdata; 209 bool short_preamble; 210 int erp, shift = 0, bitrate; 211 u16 dur; 212 struct ieee80211_supported_band *sband; 213 214 sband = local->hw.wiphy->bands[frame_txctl->band]; 215 216 short_preamble = false; 217 218 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 219 erp = 0; 220 if (vif) { 221 sdata = vif_to_sdata(vif); 222 short_preamble = sdata->vif.bss_conf.use_short_preamble; 223 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) 224 erp = rate->flags & IEEE80211_RATE_ERP_G; 225 shift = ieee80211_vif_get_shift(vif); 226 } 227 228 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift); 229 230 /* Data frame duration */ 231 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, 232 erp, short_preamble, shift); 233 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { 234 /* ACK duration */ 235 dur += ieee80211_frame_duration(sband->band, 10, bitrate, 236 erp, short_preamble, shift); 237 } 238 239 return cpu_to_le16(dur); 240 } 241 EXPORT_SYMBOL(ieee80211_ctstoself_duration); 242 243 static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac) 244 { 245 struct ieee80211_local *local = sdata->local; 246 struct ieee80211_vif *vif = &sdata->vif; 247 struct fq *fq = &local->fq; 248 struct ps_data *ps = NULL; 249 struct txq_info *txqi; 250 struct sta_info *sta; 251 int i; 252 253 spin_lock_bh(&fq->lock); 254 255 if (sdata->vif.type == NL80211_IFTYPE_AP) 256 ps = &sdata->bss->ps; 257 258 sdata->vif.txqs_stopped[ac] = false; 259 260 list_for_each_entry_rcu(sta, &local->sta_list, list) { 261 if (sdata != sta->sdata) 262 continue; 263 264 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { 265 struct ieee80211_txq *txq = sta->sta.txq[i]; 266 267 if (!txq) 268 continue; 269 270 txqi = to_txq_info(txq); 271 272 if (ac != txq->ac) 273 continue; 274 275 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, 276 &txqi->flags)) 277 continue; 278 279 spin_unlock_bh(&fq->lock); 280 drv_wake_tx_queue(local, txqi); 281 spin_lock_bh(&fq->lock); 282 } 283 } 284 285 if (!vif->txq) 286 goto out; 287 288 txqi = to_txq_info(vif->txq); 289 290 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, &txqi->flags) || 291 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac) 292 goto out; 293 294 spin_unlock_bh(&fq->lock); 295 296 drv_wake_tx_queue(local, txqi); 297 return; 298 out: 299 spin_unlock_bh(&fq->lock); 300 } 301 302 void ieee80211_wake_txqs(unsigned long data) 303 { 304 struct ieee80211_local *local = (struct ieee80211_local *)data; 305 struct ieee80211_sub_if_data *sdata; 306 int n_acs = IEEE80211_NUM_ACS; 307 unsigned long flags; 308 int i; 309 310 rcu_read_lock(); 311 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 312 313 if (local->hw.queues < IEEE80211_NUM_ACS) 314 n_acs = 1; 315 316 for (i = 0; i < local->hw.queues; i++) { 317 if (local->queue_stop_reasons[i]) 318 continue; 319 320 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 321 list_for_each_entry_rcu(sdata, &local->interfaces, list) { 322 int ac; 323 324 for (ac = 0; ac < n_acs; ac++) { 325 int ac_queue = sdata->vif.hw_queue[ac]; 326 327 if (ac_queue == i || 328 sdata->vif.cab_queue == i) 329 __ieee80211_wake_txqs(sdata, ac); 330 } 331 } 332 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 333 } 334 335 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 336 rcu_read_unlock(); 337 } 338 339 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue) 340 { 341 struct ieee80211_sub_if_data *sdata; 342 int n_acs = IEEE80211_NUM_ACS; 343 344 if (local->ops->wake_tx_queue) 345 return; 346 347 if (local->hw.queues < IEEE80211_NUM_ACS) 348 n_acs = 1; 349 350 list_for_each_entry_rcu(sdata, &local->interfaces, list) { 351 int ac; 352 353 if (!sdata->dev) 354 continue; 355 356 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE && 357 local->queue_stop_reasons[sdata->vif.cab_queue] != 0) 358 continue; 359 360 for (ac = 0; ac < n_acs; ac++) { 361 int ac_queue = sdata->vif.hw_queue[ac]; 362 363 if (ac_queue == queue || 364 (sdata->vif.cab_queue == queue && 365 local->queue_stop_reasons[ac_queue] == 0 && 366 skb_queue_empty(&local->pending[ac_queue]))) 367 netif_wake_subqueue(sdata->dev, ac); 368 } 369 } 370 } 371 372 static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, 373 enum queue_stop_reason reason, 374 bool refcounted) 375 { 376 struct ieee80211_local *local = hw_to_local(hw); 377 378 trace_wake_queue(local, queue, reason); 379 380 if (WARN_ON(queue >= hw->queues)) 381 return; 382 383 if (!test_bit(reason, &local->queue_stop_reasons[queue])) 384 return; 385 386 if (!refcounted) { 387 local->q_stop_reasons[queue][reason] = 0; 388 } else { 389 local->q_stop_reasons[queue][reason]--; 390 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0)) 391 local->q_stop_reasons[queue][reason] = 0; 392 } 393 394 if (local->q_stop_reasons[queue][reason] == 0) 395 __clear_bit(reason, &local->queue_stop_reasons[queue]); 396 397 if (local->queue_stop_reasons[queue] != 0) 398 /* someone still has this queue stopped */ 399 return; 400 401 if (skb_queue_empty(&local->pending[queue])) { 402 rcu_read_lock(); 403 ieee80211_propagate_queue_wake(local, queue); 404 rcu_read_unlock(); 405 } else 406 tasklet_schedule(&local->tx_pending_tasklet); 407 408 if (local->ops->wake_tx_queue) 409 tasklet_schedule(&local->wake_txqs_tasklet); 410 } 411 412 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 413 enum queue_stop_reason reason, 414 bool refcounted) 415 { 416 struct ieee80211_local *local = hw_to_local(hw); 417 unsigned long flags; 418 419 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 420 __ieee80211_wake_queue(hw, queue, reason, refcounted); 421 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 422 } 423 424 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) 425 { 426 ieee80211_wake_queue_by_reason(hw, queue, 427 IEEE80211_QUEUE_STOP_REASON_DRIVER, 428 false); 429 } 430 EXPORT_SYMBOL(ieee80211_wake_queue); 431 432 static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, 433 enum queue_stop_reason reason, 434 bool refcounted) 435 { 436 struct ieee80211_local *local = hw_to_local(hw); 437 struct ieee80211_sub_if_data *sdata; 438 int n_acs = IEEE80211_NUM_ACS; 439 440 trace_stop_queue(local, queue, reason); 441 442 if (WARN_ON(queue >= hw->queues)) 443 return; 444 445 if (!refcounted) 446 local->q_stop_reasons[queue][reason] = 1; 447 else 448 local->q_stop_reasons[queue][reason]++; 449 450 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue])) 451 return; 452 453 if (local->hw.queues < IEEE80211_NUM_ACS) 454 n_acs = 1; 455 456 rcu_read_lock(); 457 list_for_each_entry_rcu(sdata, &local->interfaces, list) { 458 int ac; 459 460 if (!sdata->dev) 461 continue; 462 463 for (ac = 0; ac < n_acs; ac++) { 464 if (sdata->vif.hw_queue[ac] == queue || 465 sdata->vif.cab_queue == queue) { 466 if (!local->ops->wake_tx_queue) { 467 netif_stop_subqueue(sdata->dev, ac); 468 continue; 469 } 470 spin_lock(&local->fq.lock); 471 sdata->vif.txqs_stopped[ac] = true; 472 spin_unlock(&local->fq.lock); 473 } 474 } 475 } 476 rcu_read_unlock(); 477 } 478 479 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 480 enum queue_stop_reason reason, 481 bool refcounted) 482 { 483 struct ieee80211_local *local = hw_to_local(hw); 484 unsigned long flags; 485 486 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 487 __ieee80211_stop_queue(hw, queue, reason, refcounted); 488 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 489 } 490 491 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) 492 { 493 ieee80211_stop_queue_by_reason(hw, queue, 494 IEEE80211_QUEUE_STOP_REASON_DRIVER, 495 false); 496 } 497 EXPORT_SYMBOL(ieee80211_stop_queue); 498 499 void ieee80211_add_pending_skb(struct ieee80211_local *local, 500 struct sk_buff *skb) 501 { 502 struct ieee80211_hw *hw = &local->hw; 503 unsigned long flags; 504 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 505 int queue = info->hw_queue; 506 507 if (WARN_ON(!info->control.vif)) { 508 ieee80211_free_txskb(&local->hw, skb); 509 return; 510 } 511 512 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 513 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 514 false); 515 __skb_queue_tail(&local->pending[queue], skb); 516 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 517 false); 518 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 519 } 520 521 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 522 struct sk_buff_head *skbs) 523 { 524 struct ieee80211_hw *hw = &local->hw; 525 struct sk_buff *skb; 526 unsigned long flags; 527 int queue, i; 528 529 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 530 while ((skb = skb_dequeue(skbs))) { 531 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 532 533 if (WARN_ON(!info->control.vif)) { 534 ieee80211_free_txskb(&local->hw, skb); 535 continue; 536 } 537 538 queue = info->hw_queue; 539 540 __ieee80211_stop_queue(hw, queue, 541 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 542 false); 543 544 __skb_queue_tail(&local->pending[queue], skb); 545 } 546 547 for (i = 0; i < hw->queues; i++) 548 __ieee80211_wake_queue(hw, i, 549 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 550 false); 551 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 552 } 553 554 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 555 unsigned long queues, 556 enum queue_stop_reason reason, 557 bool refcounted) 558 { 559 struct ieee80211_local *local = hw_to_local(hw); 560 unsigned long flags; 561 int i; 562 563 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 564 565 for_each_set_bit(i, &queues, hw->queues) 566 __ieee80211_stop_queue(hw, i, reason, refcounted); 567 568 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 569 } 570 571 void ieee80211_stop_queues(struct ieee80211_hw *hw) 572 { 573 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 574 IEEE80211_QUEUE_STOP_REASON_DRIVER, 575 false); 576 } 577 EXPORT_SYMBOL(ieee80211_stop_queues); 578 579 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) 580 { 581 struct ieee80211_local *local = hw_to_local(hw); 582 unsigned long flags; 583 int ret; 584 585 if (WARN_ON(queue >= hw->queues)) 586 return true; 587 588 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 589 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, 590 &local->queue_stop_reasons[queue]); 591 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 592 return ret; 593 } 594 EXPORT_SYMBOL(ieee80211_queue_stopped); 595 596 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 597 unsigned long queues, 598 enum queue_stop_reason reason, 599 bool refcounted) 600 { 601 struct ieee80211_local *local = hw_to_local(hw); 602 unsigned long flags; 603 int i; 604 605 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 606 607 for_each_set_bit(i, &queues, hw->queues) 608 __ieee80211_wake_queue(hw, i, reason, refcounted); 609 610 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 611 } 612 613 void ieee80211_wake_queues(struct ieee80211_hw *hw) 614 { 615 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 616 IEEE80211_QUEUE_STOP_REASON_DRIVER, 617 false); 618 } 619 EXPORT_SYMBOL(ieee80211_wake_queues); 620 621 static unsigned int 622 ieee80211_get_vif_queues(struct ieee80211_local *local, 623 struct ieee80211_sub_if_data *sdata) 624 { 625 unsigned int queues; 626 627 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) { 628 int ac; 629 630 queues = 0; 631 632 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 633 queues |= BIT(sdata->vif.hw_queue[ac]); 634 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) 635 queues |= BIT(sdata->vif.cab_queue); 636 } else { 637 /* all queues */ 638 queues = BIT(local->hw.queues) - 1; 639 } 640 641 return queues; 642 } 643 644 void __ieee80211_flush_queues(struct ieee80211_local *local, 645 struct ieee80211_sub_if_data *sdata, 646 unsigned int queues, bool drop) 647 { 648 if (!local->ops->flush) 649 return; 650 651 /* 652 * If no queue was set, or if the HW doesn't support 653 * IEEE80211_HW_QUEUE_CONTROL - flush all queues 654 */ 655 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) 656 queues = ieee80211_get_vif_queues(local, sdata); 657 658 ieee80211_stop_queues_by_reason(&local->hw, queues, 659 IEEE80211_QUEUE_STOP_REASON_FLUSH, 660 false); 661 662 drv_flush(local, sdata, queues, drop); 663 664 ieee80211_wake_queues_by_reason(&local->hw, queues, 665 IEEE80211_QUEUE_STOP_REASON_FLUSH, 666 false); 667 } 668 669 void ieee80211_flush_queues(struct ieee80211_local *local, 670 struct ieee80211_sub_if_data *sdata, bool drop) 671 { 672 __ieee80211_flush_queues(local, sdata, 0, drop); 673 } 674 675 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 676 struct ieee80211_sub_if_data *sdata, 677 enum queue_stop_reason reason) 678 { 679 ieee80211_stop_queues_by_reason(&local->hw, 680 ieee80211_get_vif_queues(local, sdata), 681 reason, true); 682 } 683 684 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 685 struct ieee80211_sub_if_data *sdata, 686 enum queue_stop_reason reason) 687 { 688 ieee80211_wake_queues_by_reason(&local->hw, 689 ieee80211_get_vif_queues(local, sdata), 690 reason, true); 691 } 692 693 static void __iterate_interfaces(struct ieee80211_local *local, 694 u32 iter_flags, 695 void (*iterator)(void *data, u8 *mac, 696 struct ieee80211_vif *vif), 697 void *data) 698 { 699 struct ieee80211_sub_if_data *sdata; 700 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; 701 702 list_for_each_entry_rcu(sdata, &local->interfaces, list) { 703 switch (sdata->vif.type) { 704 case NL80211_IFTYPE_MONITOR: 705 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) 706 continue; 707 break; 708 case NL80211_IFTYPE_AP_VLAN: 709 continue; 710 default: 711 break; 712 } 713 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && 714 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 715 continue; 716 if (ieee80211_sdata_running(sdata) || !active_only) 717 iterator(data, sdata->vif.addr, 718 &sdata->vif); 719 } 720 721 sdata = rcu_dereference_check(local->monitor_sdata, 722 lockdep_is_held(&local->iflist_mtx) || 723 lockdep_rtnl_is_held()); 724 if (sdata && 725 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || 726 sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 727 iterator(data, sdata->vif.addr, &sdata->vif); 728 } 729 730 void ieee80211_iterate_interfaces( 731 struct ieee80211_hw *hw, u32 iter_flags, 732 void (*iterator)(void *data, u8 *mac, 733 struct ieee80211_vif *vif), 734 void *data) 735 { 736 struct ieee80211_local *local = hw_to_local(hw); 737 738 mutex_lock(&local->iflist_mtx); 739 __iterate_interfaces(local, iter_flags, iterator, data); 740 mutex_unlock(&local->iflist_mtx); 741 } 742 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces); 743 744 void ieee80211_iterate_active_interfaces_atomic( 745 struct ieee80211_hw *hw, u32 iter_flags, 746 void (*iterator)(void *data, u8 *mac, 747 struct ieee80211_vif *vif), 748 void *data) 749 { 750 struct ieee80211_local *local = hw_to_local(hw); 751 752 rcu_read_lock(); 753 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 754 iterator, data); 755 rcu_read_unlock(); 756 } 757 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); 758 759 void ieee80211_iterate_active_interfaces_rtnl( 760 struct ieee80211_hw *hw, u32 iter_flags, 761 void (*iterator)(void *data, u8 *mac, 762 struct ieee80211_vif *vif), 763 void *data) 764 { 765 struct ieee80211_local *local = hw_to_local(hw); 766 767 ASSERT_RTNL(); 768 769 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 770 iterator, data); 771 } 772 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl); 773 774 static void __iterate_stations(struct ieee80211_local *local, 775 void (*iterator)(void *data, 776 struct ieee80211_sta *sta), 777 void *data) 778 { 779 struct sta_info *sta; 780 781 list_for_each_entry_rcu(sta, &local->sta_list, list) { 782 if (!sta->uploaded) 783 continue; 784 785 iterator(data, &sta->sta); 786 } 787 } 788 789 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, 790 void (*iterator)(void *data, 791 struct ieee80211_sta *sta), 792 void *data) 793 { 794 struct ieee80211_local *local = hw_to_local(hw); 795 796 rcu_read_lock(); 797 __iterate_stations(local, iterator, data); 798 rcu_read_unlock(); 799 } 800 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic); 801 802 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) 803 { 804 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 805 806 if (!ieee80211_sdata_running(sdata) || 807 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 808 return NULL; 809 return &sdata->vif; 810 } 811 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); 812 813 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif) 814 { 815 struct ieee80211_sub_if_data *sdata; 816 817 if (!vif) 818 return NULL; 819 820 sdata = vif_to_sdata(vif); 821 822 if (!ieee80211_sdata_running(sdata) || 823 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 824 return NULL; 825 826 return &sdata->wdev; 827 } 828 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev); 829 830 /* 831 * Nothing should have been stuffed into the workqueue during 832 * the suspend->resume cycle. Since we can't check each caller 833 * of this function if we are already quiescing / suspended, 834 * check here and don't WARN since this can actually happen when 835 * the rx path (for example) is racing against __ieee80211_suspend 836 * and suspending / quiescing was set after the rx path checked 837 * them. 838 */ 839 static bool ieee80211_can_queue_work(struct ieee80211_local *local) 840 { 841 if (local->quiescing || (local->suspended && !local->resuming)) { 842 pr_warn("queueing ieee80211 work while going to suspend\n"); 843 return false; 844 } 845 846 return true; 847 } 848 849 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) 850 { 851 struct ieee80211_local *local = hw_to_local(hw); 852 853 if (!ieee80211_can_queue_work(local)) 854 return; 855 856 queue_work(local->workqueue, work); 857 } 858 EXPORT_SYMBOL(ieee80211_queue_work); 859 860 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, 861 struct delayed_work *dwork, 862 unsigned long delay) 863 { 864 struct ieee80211_local *local = hw_to_local(hw); 865 866 if (!ieee80211_can_queue_work(local)) 867 return; 868 869 queue_delayed_work(local->workqueue, dwork, delay); 870 } 871 EXPORT_SYMBOL(ieee80211_queue_delayed_work); 872 873 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 874 struct ieee802_11_elems *elems, 875 u64 filter, u32 crc) 876 { 877 size_t left = len; 878 const u8 *pos = start; 879 bool calc_crc = filter != 0; 880 DECLARE_BITMAP(seen_elems, 256); 881 const u8 *ie; 882 883 bitmap_zero(seen_elems, 256); 884 memset(elems, 0, sizeof(*elems)); 885 elems->ie_start = start; 886 elems->total_len = len; 887 888 while (left >= 2) { 889 u8 id, elen; 890 bool elem_parse_failed; 891 892 id = *pos++; 893 elen = *pos++; 894 left -= 2; 895 896 if (elen > left) { 897 elems->parse_error = true; 898 break; 899 } 900 901 switch (id) { 902 case WLAN_EID_SSID: 903 case WLAN_EID_SUPP_RATES: 904 case WLAN_EID_FH_PARAMS: 905 case WLAN_EID_DS_PARAMS: 906 case WLAN_EID_CF_PARAMS: 907 case WLAN_EID_TIM: 908 case WLAN_EID_IBSS_PARAMS: 909 case WLAN_EID_CHALLENGE: 910 case WLAN_EID_RSN: 911 case WLAN_EID_ERP_INFO: 912 case WLAN_EID_EXT_SUPP_RATES: 913 case WLAN_EID_HT_CAPABILITY: 914 case WLAN_EID_HT_OPERATION: 915 case WLAN_EID_VHT_CAPABILITY: 916 case WLAN_EID_VHT_OPERATION: 917 case WLAN_EID_MESH_ID: 918 case WLAN_EID_MESH_CONFIG: 919 case WLAN_EID_PEER_MGMT: 920 case WLAN_EID_PREQ: 921 case WLAN_EID_PREP: 922 case WLAN_EID_PERR: 923 case WLAN_EID_RANN: 924 case WLAN_EID_CHANNEL_SWITCH: 925 case WLAN_EID_EXT_CHANSWITCH_ANN: 926 case WLAN_EID_COUNTRY: 927 case WLAN_EID_PWR_CONSTRAINT: 928 case WLAN_EID_TIMEOUT_INTERVAL: 929 case WLAN_EID_SECONDARY_CHANNEL_OFFSET: 930 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: 931 case WLAN_EID_CHAN_SWITCH_PARAM: 932 case WLAN_EID_EXT_CAPABILITY: 933 case WLAN_EID_CHAN_SWITCH_TIMING: 934 case WLAN_EID_LINK_ID: 935 case WLAN_EID_BSS_MAX_IDLE_PERIOD: 936 /* 937 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible 938 * that if the content gets bigger it might be needed more than once 939 */ 940 if (test_bit(id, seen_elems)) { 941 elems->parse_error = true; 942 left -= elen; 943 pos += elen; 944 continue; 945 } 946 break; 947 } 948 949 if (calc_crc && id < 64 && (filter & (1ULL << id))) 950 crc = crc32_be(crc, pos - 2, elen + 2); 951 952 elem_parse_failed = false; 953 954 switch (id) { 955 case WLAN_EID_LINK_ID: 956 if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) { 957 elem_parse_failed = true; 958 break; 959 } 960 elems->lnk_id = (void *)(pos - 2); 961 break; 962 case WLAN_EID_CHAN_SWITCH_TIMING: 963 if (elen != sizeof(struct ieee80211_ch_switch_timing)) { 964 elem_parse_failed = true; 965 break; 966 } 967 elems->ch_sw_timing = (void *)pos; 968 break; 969 case WLAN_EID_EXT_CAPABILITY: 970 elems->ext_capab = pos; 971 elems->ext_capab_len = elen; 972 break; 973 case WLAN_EID_SSID: 974 elems->ssid = pos; 975 elems->ssid_len = elen; 976 break; 977 case WLAN_EID_SUPP_RATES: 978 elems->supp_rates = pos; 979 elems->supp_rates_len = elen; 980 break; 981 case WLAN_EID_DS_PARAMS: 982 if (elen >= 1) 983 elems->ds_params = pos; 984 else 985 elem_parse_failed = true; 986 break; 987 case WLAN_EID_TIM: 988 if (elen >= sizeof(struct ieee80211_tim_ie)) { 989 elems->tim = (void *)pos; 990 elems->tim_len = elen; 991 } else 992 elem_parse_failed = true; 993 break; 994 case WLAN_EID_CHALLENGE: 995 elems->challenge = pos; 996 elems->challenge_len = elen; 997 break; 998 case WLAN_EID_VENDOR_SPECIFIC: 999 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && 1000 pos[2] == 0xf2) { 1001 /* Microsoft OUI (00:50:F2) */ 1002 1003 if (calc_crc) 1004 crc = crc32_be(crc, pos - 2, elen + 2); 1005 1006 if (elen >= 5 && pos[3] == 2) { 1007 /* OUI Type 2 - WMM IE */ 1008 if (pos[4] == 0) { 1009 elems->wmm_info = pos; 1010 elems->wmm_info_len = elen; 1011 } else if (pos[4] == 1) { 1012 elems->wmm_param = pos; 1013 elems->wmm_param_len = elen; 1014 } 1015 } 1016 } 1017 break; 1018 case WLAN_EID_RSN: 1019 elems->rsn = pos; 1020 elems->rsn_len = elen; 1021 break; 1022 case WLAN_EID_ERP_INFO: 1023 if (elen >= 1) 1024 elems->erp_info = pos; 1025 else 1026 elem_parse_failed = true; 1027 break; 1028 case WLAN_EID_EXT_SUPP_RATES: 1029 elems->ext_supp_rates = pos; 1030 elems->ext_supp_rates_len = elen; 1031 break; 1032 case WLAN_EID_HT_CAPABILITY: 1033 if (elen >= sizeof(struct ieee80211_ht_cap)) 1034 elems->ht_cap_elem = (void *)pos; 1035 else 1036 elem_parse_failed = true; 1037 break; 1038 case WLAN_EID_HT_OPERATION: 1039 if (elen >= sizeof(struct ieee80211_ht_operation)) 1040 elems->ht_operation = (void *)pos; 1041 else 1042 elem_parse_failed = true; 1043 break; 1044 case WLAN_EID_VHT_CAPABILITY: 1045 if (elen >= sizeof(struct ieee80211_vht_cap)) 1046 elems->vht_cap_elem = (void *)pos; 1047 else 1048 elem_parse_failed = true; 1049 break; 1050 case WLAN_EID_VHT_OPERATION: 1051 if (elen >= sizeof(struct ieee80211_vht_operation)) 1052 elems->vht_operation = (void *)pos; 1053 else 1054 elem_parse_failed = true; 1055 break; 1056 case WLAN_EID_OPMODE_NOTIF: 1057 if (elen > 0) 1058 elems->opmode_notif = pos; 1059 else 1060 elem_parse_failed = true; 1061 break; 1062 case WLAN_EID_MESH_ID: 1063 elems->mesh_id = pos; 1064 elems->mesh_id_len = elen; 1065 break; 1066 case WLAN_EID_MESH_CONFIG: 1067 if (elen >= sizeof(struct ieee80211_meshconf_ie)) 1068 elems->mesh_config = (void *)pos; 1069 else 1070 elem_parse_failed = true; 1071 break; 1072 case WLAN_EID_PEER_MGMT: 1073 elems->peering = pos; 1074 elems->peering_len = elen; 1075 break; 1076 case WLAN_EID_MESH_AWAKE_WINDOW: 1077 if (elen >= 2) 1078 elems->awake_window = (void *)pos; 1079 break; 1080 case WLAN_EID_PREQ: 1081 elems->preq = pos; 1082 elems->preq_len = elen; 1083 break; 1084 case WLAN_EID_PREP: 1085 elems->prep = pos; 1086 elems->prep_len = elen; 1087 break; 1088 case WLAN_EID_PERR: 1089 elems->perr = pos; 1090 elems->perr_len = elen; 1091 break; 1092 case WLAN_EID_RANN: 1093 if (elen >= sizeof(struct ieee80211_rann_ie)) 1094 elems->rann = (void *)pos; 1095 else 1096 elem_parse_failed = true; 1097 break; 1098 case WLAN_EID_CHANNEL_SWITCH: 1099 if (elen != sizeof(struct ieee80211_channel_sw_ie)) { 1100 elem_parse_failed = true; 1101 break; 1102 } 1103 elems->ch_switch_ie = (void *)pos; 1104 break; 1105 case WLAN_EID_EXT_CHANSWITCH_ANN: 1106 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) { 1107 elem_parse_failed = true; 1108 break; 1109 } 1110 elems->ext_chansw_ie = (void *)pos; 1111 break; 1112 case WLAN_EID_SECONDARY_CHANNEL_OFFSET: 1113 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) { 1114 elem_parse_failed = true; 1115 break; 1116 } 1117 elems->sec_chan_offs = (void *)pos; 1118 break; 1119 case WLAN_EID_CHAN_SWITCH_PARAM: 1120 if (elen != 1121 sizeof(*elems->mesh_chansw_params_ie)) { 1122 elem_parse_failed = true; 1123 break; 1124 } 1125 elems->mesh_chansw_params_ie = (void *)pos; 1126 break; 1127 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH: 1128 if (!action || 1129 elen != sizeof(*elems->wide_bw_chansw_ie)) { 1130 elem_parse_failed = true; 1131 break; 1132 } 1133 elems->wide_bw_chansw_ie = (void *)pos; 1134 break; 1135 case WLAN_EID_CHANNEL_SWITCH_WRAPPER: 1136 if (action) { 1137 elem_parse_failed = true; 1138 break; 1139 } 1140 /* 1141 * This is a bit tricky, but as we only care about 1142 * the wide bandwidth channel switch element, so 1143 * just parse it out manually. 1144 */ 1145 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH, 1146 pos, elen); 1147 if (ie) { 1148 if (ie[1] == sizeof(*elems->wide_bw_chansw_ie)) 1149 elems->wide_bw_chansw_ie = 1150 (void *)(ie + 2); 1151 else 1152 elem_parse_failed = true; 1153 } 1154 break; 1155 case WLAN_EID_COUNTRY: 1156 elems->country_elem = pos; 1157 elems->country_elem_len = elen; 1158 break; 1159 case WLAN_EID_PWR_CONSTRAINT: 1160 if (elen != 1) { 1161 elem_parse_failed = true; 1162 break; 1163 } 1164 elems->pwr_constr_elem = pos; 1165 break; 1166 case WLAN_EID_CISCO_VENDOR_SPECIFIC: 1167 /* Lots of different options exist, but we only care 1168 * about the Dynamic Transmit Power Control element. 1169 * First check for the Cisco OUI, then for the DTPC 1170 * tag (0x00). 1171 */ 1172 if (elen < 4) { 1173 elem_parse_failed = true; 1174 break; 1175 } 1176 1177 if (pos[0] != 0x00 || pos[1] != 0x40 || 1178 pos[2] != 0x96 || pos[3] != 0x00) 1179 break; 1180 1181 if (elen != 6) { 1182 elem_parse_failed = true; 1183 break; 1184 } 1185 1186 if (calc_crc) 1187 crc = crc32_be(crc, pos - 2, elen + 2); 1188 1189 elems->cisco_dtpc_elem = pos; 1190 break; 1191 case WLAN_EID_TIMEOUT_INTERVAL: 1192 if (elen >= sizeof(struct ieee80211_timeout_interval_ie)) 1193 elems->timeout_int = (void *)pos; 1194 else 1195 elem_parse_failed = true; 1196 break; 1197 case WLAN_EID_BSS_MAX_IDLE_PERIOD: 1198 if (elen >= sizeof(*elems->max_idle_period_ie)) 1199 elems->max_idle_period_ie = (void *)pos; 1200 break; 1201 case WLAN_EID_EXTENSION: 1202 if (pos[0] == WLAN_EID_EXT_HE_MU_EDCA && 1203 elen >= (sizeof(*elems->mu_edca_param_set) + 1)) { 1204 elems->mu_edca_param_set = (void *)&pos[1]; 1205 } else if (pos[0] == WLAN_EID_EXT_HE_CAPABILITY) { 1206 elems->he_cap = (void *)&pos[1]; 1207 elems->he_cap_len = elen - 1; 1208 } else if (pos[0] == WLAN_EID_EXT_HE_OPERATION && 1209 elen >= sizeof(*elems->he_operation) && 1210 elen >= ieee80211_he_oper_size(&pos[1])) { 1211 elems->he_operation = (void *)&pos[1]; 1212 } else if (pos[0] == WLAN_EID_EXT_UORA && elen >= 1) { 1213 elems->uora_element = (void *)&pos[1]; 1214 } 1215 break; 1216 default: 1217 break; 1218 } 1219 1220 if (elem_parse_failed) 1221 elems->parse_error = true; 1222 else 1223 __set_bit(id, seen_elems); 1224 1225 left -= elen; 1226 pos += elen; 1227 } 1228 1229 if (left != 0) 1230 elems->parse_error = true; 1231 1232 return crc; 1233 } 1234 1235 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 1236 struct ieee80211_tx_queue_params 1237 *qparam, int ac) 1238 { 1239 struct ieee80211_chanctx_conf *chanctx_conf; 1240 const struct ieee80211_reg_rule *rrule; 1241 const struct ieee80211_wmm_ac *wmm_ac; 1242 u16 center_freq = 0; 1243 1244 if (sdata->vif.type != NL80211_IFTYPE_AP && 1245 sdata->vif.type != NL80211_IFTYPE_STATION) 1246 return; 1247 1248 rcu_read_lock(); 1249 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1250 if (chanctx_conf) 1251 center_freq = chanctx_conf->def.chan->center_freq; 1252 1253 if (!center_freq) { 1254 rcu_read_unlock(); 1255 return; 1256 } 1257 1258 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq)); 1259 1260 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) { 1261 rcu_read_unlock(); 1262 return; 1263 } 1264 1265 if (sdata->vif.type == NL80211_IFTYPE_AP) 1266 wmm_ac = &rrule->wmm_rule.ap[ac]; 1267 else 1268 wmm_ac = &rrule->wmm_rule.client[ac]; 1269 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min); 1270 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max); 1271 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn); 1272 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32); 1273 rcu_read_unlock(); 1274 } 1275 1276 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1277 bool bss_notify, bool enable_qos) 1278 { 1279 struct ieee80211_local *local = sdata->local; 1280 struct ieee80211_tx_queue_params qparam; 1281 struct ieee80211_chanctx_conf *chanctx_conf; 1282 int ac; 1283 bool use_11b; 1284 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ 1285 int aCWmin, aCWmax; 1286 1287 if (!local->ops->conf_tx) 1288 return; 1289 1290 if (local->hw.queues < IEEE80211_NUM_ACS) 1291 return; 1292 1293 memset(&qparam, 0, sizeof(qparam)); 1294 1295 rcu_read_lock(); 1296 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1297 use_11b = (chanctx_conf && 1298 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) && 1299 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); 1300 rcu_read_unlock(); 1301 1302 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); 1303 1304 /* Set defaults according to 802.11-2007 Table 7-37 */ 1305 aCWmax = 1023; 1306 if (use_11b) 1307 aCWmin = 31; 1308 else 1309 aCWmin = 15; 1310 1311 /* Confiure old 802.11b/g medium access rules. */ 1312 qparam.cw_max = aCWmax; 1313 qparam.cw_min = aCWmin; 1314 qparam.txop = 0; 1315 qparam.aifs = 2; 1316 1317 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 1318 /* Update if QoS is enabled. */ 1319 if (enable_qos) { 1320 switch (ac) { 1321 case IEEE80211_AC_BK: 1322 qparam.cw_max = aCWmax; 1323 qparam.cw_min = aCWmin; 1324 qparam.txop = 0; 1325 if (is_ocb) 1326 qparam.aifs = 9; 1327 else 1328 qparam.aifs = 7; 1329 break; 1330 /* never happens but let's not leave undefined */ 1331 default: 1332 case IEEE80211_AC_BE: 1333 qparam.cw_max = aCWmax; 1334 qparam.cw_min = aCWmin; 1335 qparam.txop = 0; 1336 if (is_ocb) 1337 qparam.aifs = 6; 1338 else 1339 qparam.aifs = 3; 1340 break; 1341 case IEEE80211_AC_VI: 1342 qparam.cw_max = aCWmin; 1343 qparam.cw_min = (aCWmin + 1) / 2 - 1; 1344 if (is_ocb) 1345 qparam.txop = 0; 1346 else if (use_11b) 1347 qparam.txop = 6016/32; 1348 else 1349 qparam.txop = 3008/32; 1350 1351 if (is_ocb) 1352 qparam.aifs = 3; 1353 else 1354 qparam.aifs = 2; 1355 break; 1356 case IEEE80211_AC_VO: 1357 qparam.cw_max = (aCWmin + 1) / 2 - 1; 1358 qparam.cw_min = (aCWmin + 1) / 4 - 1; 1359 if (is_ocb) 1360 qparam.txop = 0; 1361 else if (use_11b) 1362 qparam.txop = 3264/32; 1363 else 1364 qparam.txop = 1504/32; 1365 qparam.aifs = 2; 1366 break; 1367 } 1368 } 1369 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac); 1370 1371 qparam.uapsd = false; 1372 1373 sdata->tx_conf[ac] = qparam; 1374 drv_conf_tx(local, sdata, ac, &qparam); 1375 } 1376 1377 if (sdata->vif.type != NL80211_IFTYPE_MONITOR && 1378 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 1379 sdata->vif.type != NL80211_IFTYPE_NAN) { 1380 sdata->vif.bss_conf.qos = enable_qos; 1381 if (bss_notify) 1382 ieee80211_bss_info_change_notify(sdata, 1383 BSS_CHANGED_QOS); 1384 } 1385 } 1386 1387 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1388 u16 transaction, u16 auth_alg, u16 status, 1389 const u8 *extra, size_t extra_len, const u8 *da, 1390 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, 1391 u32 tx_flags) 1392 { 1393 struct ieee80211_local *local = sdata->local; 1394 struct sk_buff *skb; 1395 struct ieee80211_mgmt *mgmt; 1396 int err; 1397 1398 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ 1399 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + 1400 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN); 1401 if (!skb) 1402 return; 1403 1404 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); 1405 1406 mgmt = skb_put_zero(skb, 24 + 6); 1407 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 1408 IEEE80211_STYPE_AUTH); 1409 memcpy(mgmt->da, da, ETH_ALEN); 1410 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 1411 memcpy(mgmt->bssid, bssid, ETH_ALEN); 1412 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); 1413 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); 1414 mgmt->u.auth.status_code = cpu_to_le16(status); 1415 if (extra) 1416 skb_put_data(skb, extra, extra_len); 1417 1418 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { 1419 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 1420 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); 1421 WARN_ON(err); 1422 } 1423 1424 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | 1425 tx_flags; 1426 ieee80211_tx_skb(sdata, skb); 1427 } 1428 1429 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1430 const u8 *bssid, u16 stype, u16 reason, 1431 bool send_frame, u8 *frame_buf) 1432 { 1433 struct ieee80211_local *local = sdata->local; 1434 struct sk_buff *skb; 1435 struct ieee80211_mgmt *mgmt = (void *)frame_buf; 1436 1437 /* build frame */ 1438 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); 1439 mgmt->duration = 0; /* initialize only */ 1440 mgmt->seq_ctrl = 0; /* initialize only */ 1441 memcpy(mgmt->da, bssid, ETH_ALEN); 1442 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 1443 memcpy(mgmt->bssid, bssid, ETH_ALEN); 1444 /* u.deauth.reason_code == u.disassoc.reason_code */ 1445 mgmt->u.deauth.reason_code = cpu_to_le16(reason); 1446 1447 if (send_frame) { 1448 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 1449 IEEE80211_DEAUTH_FRAME_LEN); 1450 if (!skb) 1451 return; 1452 1453 skb_reserve(skb, local->hw.extra_tx_headroom); 1454 1455 /* copy in frame */ 1456 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN); 1457 1458 if (sdata->vif.type != NL80211_IFTYPE_STATION || 1459 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) 1460 IEEE80211_SKB_CB(skb)->flags |= 1461 IEEE80211_TX_INTFL_DONT_ENCRYPT; 1462 1463 ieee80211_tx_skb(sdata, skb); 1464 } 1465 } 1466 1467 static int ieee80211_build_preq_ies_band(struct ieee80211_local *local, 1468 u8 *buffer, size_t buffer_len, 1469 const u8 *ie, size_t ie_len, 1470 enum nl80211_band band, 1471 u32 rate_mask, 1472 struct cfg80211_chan_def *chandef, 1473 size_t *offset, u32 flags) 1474 { 1475 struct ieee80211_supported_band *sband; 1476 const struct ieee80211_sta_he_cap *he_cap; 1477 u8 *pos = buffer, *end = buffer + buffer_len; 1478 size_t noffset; 1479 int supp_rates_len, i; 1480 u8 rates[32]; 1481 int num_rates; 1482 int ext_rates_len; 1483 int shift; 1484 u32 rate_flags; 1485 bool have_80mhz = false; 1486 1487 *offset = 0; 1488 1489 sband = local->hw.wiphy->bands[band]; 1490 if (WARN_ON_ONCE(!sband)) 1491 return 0; 1492 1493 rate_flags = ieee80211_chandef_rate_flags(chandef); 1494 shift = ieee80211_chandef_get_shift(chandef); 1495 1496 num_rates = 0; 1497 for (i = 0; i < sband->n_bitrates; i++) { 1498 if ((BIT(i) & rate_mask) == 0) 1499 continue; /* skip rate */ 1500 if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 1501 continue; 1502 1503 rates[num_rates++] = 1504 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate, 1505 (1 << shift) * 5); 1506 } 1507 1508 supp_rates_len = min_t(int, num_rates, 8); 1509 1510 if (end - pos < 2 + supp_rates_len) 1511 goto out_err; 1512 *pos++ = WLAN_EID_SUPP_RATES; 1513 *pos++ = supp_rates_len; 1514 memcpy(pos, rates, supp_rates_len); 1515 pos += supp_rates_len; 1516 1517 /* insert "request information" if in custom IEs */ 1518 if (ie && ie_len) { 1519 static const u8 before_extrates[] = { 1520 WLAN_EID_SSID, 1521 WLAN_EID_SUPP_RATES, 1522 WLAN_EID_REQUEST, 1523 }; 1524 noffset = ieee80211_ie_split(ie, ie_len, 1525 before_extrates, 1526 ARRAY_SIZE(before_extrates), 1527 *offset); 1528 if (end - pos < noffset - *offset) 1529 goto out_err; 1530 memcpy(pos, ie + *offset, noffset - *offset); 1531 pos += noffset - *offset; 1532 *offset = noffset; 1533 } 1534 1535 ext_rates_len = num_rates - supp_rates_len; 1536 if (ext_rates_len > 0) { 1537 if (end - pos < 2 + ext_rates_len) 1538 goto out_err; 1539 *pos++ = WLAN_EID_EXT_SUPP_RATES; 1540 *pos++ = ext_rates_len; 1541 memcpy(pos, rates + supp_rates_len, ext_rates_len); 1542 pos += ext_rates_len; 1543 } 1544 1545 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) { 1546 if (end - pos < 3) 1547 goto out_err; 1548 *pos++ = WLAN_EID_DS_PARAMS; 1549 *pos++ = 1; 1550 *pos++ = ieee80211_frequency_to_channel( 1551 chandef->chan->center_freq); 1552 } 1553 1554 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT) 1555 goto done; 1556 1557 /* insert custom IEs that go before HT */ 1558 if (ie && ie_len) { 1559 static const u8 before_ht[] = { 1560 /* 1561 * no need to list the ones split off already 1562 * (or generated here) 1563 */ 1564 WLAN_EID_DS_PARAMS, 1565 WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 1566 }; 1567 noffset = ieee80211_ie_split(ie, ie_len, 1568 before_ht, ARRAY_SIZE(before_ht), 1569 *offset); 1570 if (end - pos < noffset - *offset) 1571 goto out_err; 1572 memcpy(pos, ie + *offset, noffset - *offset); 1573 pos += noffset - *offset; 1574 *offset = noffset; 1575 } 1576 1577 if (sband->ht_cap.ht_supported) { 1578 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap)) 1579 goto out_err; 1580 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, 1581 sband->ht_cap.cap); 1582 } 1583 1584 /* insert custom IEs that go before VHT */ 1585 if (ie && ie_len) { 1586 static const u8 before_vht[] = { 1587 /* 1588 * no need to list the ones split off already 1589 * (or generated here) 1590 */ 1591 WLAN_EID_BSS_COEX_2040, 1592 WLAN_EID_EXT_CAPABILITY, 1593 WLAN_EID_SSID_LIST, 1594 WLAN_EID_CHANNEL_USAGE, 1595 WLAN_EID_INTERWORKING, 1596 WLAN_EID_MESH_ID, 1597 /* 60 GHz (Multi-band, DMG, MMS) can't happen */ 1598 }; 1599 noffset = ieee80211_ie_split(ie, ie_len, 1600 before_vht, ARRAY_SIZE(before_vht), 1601 *offset); 1602 if (end - pos < noffset - *offset) 1603 goto out_err; 1604 memcpy(pos, ie + *offset, noffset - *offset); 1605 pos += noffset - *offset; 1606 *offset = noffset; 1607 } 1608 1609 /* Check if any channel in this sband supports at least 80 MHz */ 1610 for (i = 0; i < sband->n_channels; i++) { 1611 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | 1612 IEEE80211_CHAN_NO_80MHZ)) 1613 continue; 1614 1615 have_80mhz = true; 1616 break; 1617 } 1618 1619 if (sband->vht_cap.vht_supported && have_80mhz) { 1620 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap)) 1621 goto out_err; 1622 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, 1623 sband->vht_cap.cap); 1624 } 1625 1626 /* insert custom IEs that go before HE */ 1627 if (ie && ie_len) { 1628 static const u8 before_he[] = { 1629 /* 1630 * no need to list the ones split off before VHT 1631 * or generated here 1632 */ 1633 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS, 1634 WLAN_EID_AP_CSN, 1635 /* TODO: add 11ah/11aj/11ak elements */ 1636 }; 1637 noffset = ieee80211_ie_split(ie, ie_len, 1638 before_he, ARRAY_SIZE(before_he), 1639 *offset); 1640 if (end - pos < noffset - *offset) 1641 goto out_err; 1642 memcpy(pos, ie + *offset, noffset - *offset); 1643 pos += noffset - *offset; 1644 *offset = noffset; 1645 } 1646 1647 he_cap = ieee80211_get_he_sta_cap(sband); 1648 if (he_cap) { 1649 pos = ieee80211_ie_build_he_cap(pos, he_cap, end); 1650 if (!pos) 1651 goto out_err; 1652 } 1653 1654 /* 1655 * If adding more here, adjust code in main.c 1656 * that calculates local->scan_ies_len. 1657 */ 1658 1659 return pos - buffer; 1660 out_err: 1661 WARN_ONCE(1, "not enough space for preq IEs\n"); 1662 done: 1663 return pos - buffer; 1664 } 1665 1666 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1667 size_t buffer_len, 1668 struct ieee80211_scan_ies *ie_desc, 1669 const u8 *ie, size_t ie_len, 1670 u8 bands_used, u32 *rate_masks, 1671 struct cfg80211_chan_def *chandef, 1672 u32 flags) 1673 { 1674 size_t pos = 0, old_pos = 0, custom_ie_offset = 0; 1675 int i; 1676 1677 memset(ie_desc, 0, sizeof(*ie_desc)); 1678 1679 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1680 if (bands_used & BIT(i)) { 1681 pos += ieee80211_build_preq_ies_band(local, 1682 buffer + pos, 1683 buffer_len - pos, 1684 ie, ie_len, i, 1685 rate_masks[i], 1686 chandef, 1687 &custom_ie_offset, 1688 flags); 1689 ie_desc->ies[i] = buffer + old_pos; 1690 ie_desc->len[i] = pos - old_pos; 1691 old_pos = pos; 1692 } 1693 } 1694 1695 /* add any remaining custom IEs */ 1696 if (ie && ie_len) { 1697 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset, 1698 "not enough space for preq custom IEs\n")) 1699 return pos; 1700 memcpy(buffer + pos, ie + custom_ie_offset, 1701 ie_len - custom_ie_offset); 1702 ie_desc->common_ies = buffer + pos; 1703 ie_desc->common_ie_len = ie_len - custom_ie_offset; 1704 pos += ie_len - custom_ie_offset; 1705 } 1706 1707 return pos; 1708 }; 1709 1710 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1711 const u8 *src, const u8 *dst, 1712 u32 ratemask, 1713 struct ieee80211_channel *chan, 1714 const u8 *ssid, size_t ssid_len, 1715 const u8 *ie, size_t ie_len, 1716 u32 flags) 1717 { 1718 struct ieee80211_local *local = sdata->local; 1719 struct cfg80211_chan_def chandef; 1720 struct sk_buff *skb; 1721 struct ieee80211_mgmt *mgmt; 1722 int ies_len; 1723 u32 rate_masks[NUM_NL80211_BANDS] = {}; 1724 struct ieee80211_scan_ies dummy_ie_desc; 1725 1726 /* 1727 * Do not send DS Channel parameter for directed probe requests 1728 * in order to maximize the chance that we get a response. Some 1729 * badly-behaved APs don't respond when this parameter is included. 1730 */ 1731 chandef.width = sdata->vif.bss_conf.chandef.width; 1732 if (flags & IEEE80211_PROBE_FLAG_DIRECTED) 1733 chandef.chan = NULL; 1734 else 1735 chandef.chan = chan; 1736 1737 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len, 1738 100 + ie_len); 1739 if (!skb) 1740 return NULL; 1741 1742 rate_masks[chan->band] = ratemask; 1743 ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb), 1744 skb_tailroom(skb), &dummy_ie_desc, 1745 ie, ie_len, BIT(chan->band), 1746 rate_masks, &chandef, flags); 1747 skb_put(skb, ies_len); 1748 1749 if (dst) { 1750 mgmt = (struct ieee80211_mgmt *) skb->data; 1751 memcpy(mgmt->da, dst, ETH_ALEN); 1752 memcpy(mgmt->bssid, dst, ETH_ALEN); 1753 } 1754 1755 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 1756 1757 return skb; 1758 } 1759 1760 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1761 struct ieee802_11_elems *elems, 1762 enum nl80211_band band, u32 *basic_rates) 1763 { 1764 struct ieee80211_supported_band *sband; 1765 size_t num_rates; 1766 u32 supp_rates, rate_flags; 1767 int i, j, shift; 1768 1769 sband = sdata->local->hw.wiphy->bands[band]; 1770 if (WARN_ON(!sband)) 1771 return 1; 1772 1773 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 1774 shift = ieee80211_vif_get_shift(&sdata->vif); 1775 1776 num_rates = sband->n_bitrates; 1777 supp_rates = 0; 1778 for (i = 0; i < elems->supp_rates_len + 1779 elems->ext_supp_rates_len; i++) { 1780 u8 rate = 0; 1781 int own_rate; 1782 bool is_basic; 1783 if (i < elems->supp_rates_len) 1784 rate = elems->supp_rates[i]; 1785 else if (elems->ext_supp_rates) 1786 rate = elems->ext_supp_rates 1787 [i - elems->supp_rates_len]; 1788 own_rate = 5 * (rate & 0x7f); 1789 is_basic = !!(rate & 0x80); 1790 1791 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 1792 continue; 1793 1794 for (j = 0; j < num_rates; j++) { 1795 int brate; 1796 if ((rate_flags & sband->bitrates[j].flags) 1797 != rate_flags) 1798 continue; 1799 1800 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate, 1801 1 << shift); 1802 1803 if (brate == own_rate) { 1804 supp_rates |= BIT(j); 1805 if (basic_rates && is_basic) 1806 *basic_rates |= BIT(j); 1807 } 1808 } 1809 } 1810 return supp_rates; 1811 } 1812 1813 void ieee80211_stop_device(struct ieee80211_local *local) 1814 { 1815 ieee80211_led_radio(local, false); 1816 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); 1817 1818 cancel_work_sync(&local->reconfig_filter); 1819 1820 flush_workqueue(local->workqueue); 1821 drv_stop(local); 1822 } 1823 1824 static void ieee80211_flush_completed_scan(struct ieee80211_local *local, 1825 bool aborted) 1826 { 1827 /* It's possible that we don't handle the scan completion in 1828 * time during suspend, so if it's still marked as completed 1829 * here, queue the work and flush it to clean things up. 1830 * Instead of calling the worker function directly here, we 1831 * really queue it to avoid potential races with other flows 1832 * scheduling the same work. 1833 */ 1834 if (test_bit(SCAN_COMPLETED, &local->scanning)) { 1835 /* If coming from reconfiguration failure, abort the scan so 1836 * we don't attempt to continue a partial HW scan - which is 1837 * possible otherwise if (e.g.) the 2.4 GHz portion was the 1838 * completed scan, and a 5 GHz portion is still pending. 1839 */ 1840 if (aborted) 1841 set_bit(SCAN_ABORTED, &local->scanning); 1842 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0); 1843 flush_delayed_work(&local->scan_work); 1844 } 1845 } 1846 1847 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) 1848 { 1849 struct ieee80211_sub_if_data *sdata; 1850 struct ieee80211_chanctx *ctx; 1851 1852 /* 1853 * We get here if during resume the device can't be restarted properly. 1854 * We might also get here if this happens during HW reset, which is a 1855 * slightly different situation and we need to drop all connections in 1856 * the latter case. 1857 * 1858 * Ask cfg80211 to turn off all interfaces, this will result in more 1859 * warnings but at least we'll then get into a clean stopped state. 1860 */ 1861 1862 local->resuming = false; 1863 local->suspended = false; 1864 local->in_reconfig = false; 1865 1866 ieee80211_flush_completed_scan(local, true); 1867 1868 /* scheduled scan clearly can't be running any more, but tell 1869 * cfg80211 and clear local state 1870 */ 1871 ieee80211_sched_scan_end(local); 1872 1873 list_for_each_entry(sdata, &local->interfaces, list) 1874 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; 1875 1876 /* Mark channel contexts as not being in the driver any more to avoid 1877 * removing them from the driver during the shutdown process... 1878 */ 1879 mutex_lock(&local->chanctx_mtx); 1880 list_for_each_entry(ctx, &local->chanctx_list, list) 1881 ctx->driver_present = false; 1882 mutex_unlock(&local->chanctx_mtx); 1883 1884 cfg80211_shutdown_all_interfaces(local->hw.wiphy); 1885 } 1886 1887 static void ieee80211_assign_chanctx(struct ieee80211_local *local, 1888 struct ieee80211_sub_if_data *sdata) 1889 { 1890 struct ieee80211_chanctx_conf *conf; 1891 struct ieee80211_chanctx *ctx; 1892 1893 if (!local->use_chanctx) 1894 return; 1895 1896 mutex_lock(&local->chanctx_mtx); 1897 conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 1898 lockdep_is_held(&local->chanctx_mtx)); 1899 if (conf) { 1900 ctx = container_of(conf, struct ieee80211_chanctx, conf); 1901 drv_assign_vif_chanctx(local, sdata, ctx); 1902 } 1903 mutex_unlock(&local->chanctx_mtx); 1904 } 1905 1906 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata) 1907 { 1908 struct ieee80211_local *local = sdata->local; 1909 struct sta_info *sta; 1910 1911 /* add STAs back */ 1912 mutex_lock(&local->sta_mtx); 1913 list_for_each_entry(sta, &local->sta_list, list) { 1914 enum ieee80211_sta_state state; 1915 1916 if (!sta->uploaded || sta->sdata != sdata) 1917 continue; 1918 1919 for (state = IEEE80211_STA_NOTEXIST; 1920 state < sta->sta_state; state++) 1921 WARN_ON(drv_sta_state(local, sta->sdata, sta, state, 1922 state + 1)); 1923 } 1924 mutex_unlock(&local->sta_mtx); 1925 } 1926 1927 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata) 1928 { 1929 struct cfg80211_nan_func *func, **funcs; 1930 int res, id, i = 0; 1931 1932 res = drv_start_nan(sdata->local, sdata, 1933 &sdata->u.nan.conf); 1934 if (WARN_ON(res)) 1935 return res; 1936 1937 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1, 1938 sizeof(*funcs), 1939 GFP_KERNEL); 1940 if (!funcs) 1941 return -ENOMEM; 1942 1943 /* Add all the functions: 1944 * This is a little bit ugly. We need to call a potentially sleeping 1945 * callback for each NAN function, so we can't hold the spinlock. 1946 */ 1947 spin_lock_bh(&sdata->u.nan.func_lock); 1948 1949 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) 1950 funcs[i++] = func; 1951 1952 spin_unlock_bh(&sdata->u.nan.func_lock); 1953 1954 for (i = 0; funcs[i]; i++) { 1955 res = drv_add_nan_func(sdata->local, sdata, funcs[i]); 1956 if (WARN_ON(res)) 1957 ieee80211_nan_func_terminated(&sdata->vif, 1958 funcs[i]->instance_id, 1959 NL80211_NAN_FUNC_TERM_REASON_ERROR, 1960 GFP_KERNEL); 1961 } 1962 1963 kfree(funcs); 1964 1965 return 0; 1966 } 1967 1968 int ieee80211_reconfig(struct ieee80211_local *local) 1969 { 1970 struct ieee80211_hw *hw = &local->hw; 1971 struct ieee80211_sub_if_data *sdata; 1972 struct ieee80211_chanctx *ctx; 1973 struct sta_info *sta; 1974 int res, i; 1975 bool reconfig_due_to_wowlan = false; 1976 struct ieee80211_sub_if_data *sched_scan_sdata; 1977 struct cfg80211_sched_scan_request *sched_scan_req; 1978 bool sched_scan_stopped = false; 1979 bool suspended = local->suspended; 1980 1981 /* nothing to do if HW shouldn't run */ 1982 if (!local->open_count) 1983 goto wake_up; 1984 1985 #ifdef CONFIG_PM 1986 if (suspended) 1987 local->resuming = true; 1988 1989 if (local->wowlan) { 1990 /* 1991 * In the wowlan case, both mac80211 and the device 1992 * are functional when the resume op is called, so 1993 * clear local->suspended so the device could operate 1994 * normally (e.g. pass rx frames). 1995 */ 1996 local->suspended = false; 1997 res = drv_resume(local); 1998 local->wowlan = false; 1999 if (res < 0) { 2000 local->resuming = false; 2001 return res; 2002 } 2003 if (res == 0) 2004 goto wake_up; 2005 WARN_ON(res > 1); 2006 /* 2007 * res is 1, which means the driver requested 2008 * to go through a regular reset on wakeup. 2009 * restore local->suspended in this case. 2010 */ 2011 reconfig_due_to_wowlan = true; 2012 local->suspended = true; 2013 } 2014 #endif 2015 2016 /* 2017 * In case of hw_restart during suspend (without wowlan), 2018 * cancel restart work, as we are reconfiguring the device 2019 * anyway. 2020 * Note that restart_work is scheduled on a frozen workqueue, 2021 * so we can't deadlock in this case. 2022 */ 2023 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan) 2024 cancel_work_sync(&local->restart_work); 2025 2026 local->started = false; 2027 2028 /* 2029 * Upon resume hardware can sometimes be goofy due to 2030 * various platform / driver / bus issues, so restarting 2031 * the device may at times not work immediately. Propagate 2032 * the error. 2033 */ 2034 res = drv_start(local); 2035 if (res) { 2036 if (suspended) 2037 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); 2038 else 2039 WARN(1, "Hardware became unavailable during restart.\n"); 2040 ieee80211_handle_reconfig_failure(local); 2041 return res; 2042 } 2043 2044 /* setup fragmentation threshold */ 2045 drv_set_frag_threshold(local, hw->wiphy->frag_threshold); 2046 2047 /* setup RTS threshold */ 2048 drv_set_rts_threshold(local, hw->wiphy->rts_threshold); 2049 2050 /* reset coverage class */ 2051 drv_set_coverage_class(local, hw->wiphy->coverage_class); 2052 2053 ieee80211_led_radio(local, true); 2054 ieee80211_mod_tpt_led_trig(local, 2055 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); 2056 2057 /* add interfaces */ 2058 sdata = rtnl_dereference(local->monitor_sdata); 2059 if (sdata) { 2060 /* in HW restart it exists already */ 2061 WARN_ON(local->resuming); 2062 res = drv_add_interface(local, sdata); 2063 if (WARN_ON(res)) { 2064 RCU_INIT_POINTER(local->monitor_sdata, NULL); 2065 synchronize_net(); 2066 kfree(sdata); 2067 } 2068 } 2069 2070 list_for_each_entry(sdata, &local->interfaces, list) { 2071 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 2072 sdata->vif.type != NL80211_IFTYPE_MONITOR && 2073 ieee80211_sdata_running(sdata)) { 2074 res = drv_add_interface(local, sdata); 2075 if (WARN_ON(res)) 2076 break; 2077 } 2078 } 2079 2080 /* If adding any of the interfaces failed above, roll back and 2081 * report failure. 2082 */ 2083 if (res) { 2084 list_for_each_entry_continue_reverse(sdata, &local->interfaces, 2085 list) 2086 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 2087 sdata->vif.type != NL80211_IFTYPE_MONITOR && 2088 ieee80211_sdata_running(sdata)) 2089 drv_remove_interface(local, sdata); 2090 ieee80211_handle_reconfig_failure(local); 2091 return res; 2092 } 2093 2094 /* add channel contexts */ 2095 if (local->use_chanctx) { 2096 mutex_lock(&local->chanctx_mtx); 2097 list_for_each_entry(ctx, &local->chanctx_list, list) 2098 if (ctx->replace_state != 2099 IEEE80211_CHANCTX_REPLACES_OTHER) 2100 WARN_ON(drv_add_chanctx(local, ctx)); 2101 mutex_unlock(&local->chanctx_mtx); 2102 2103 sdata = rtnl_dereference(local->monitor_sdata); 2104 if (sdata && ieee80211_sdata_running(sdata)) 2105 ieee80211_assign_chanctx(local, sdata); 2106 } 2107 2108 /* reconfigure hardware */ 2109 ieee80211_hw_config(local, ~0); 2110 2111 ieee80211_configure_filter(local); 2112 2113 /* Finally also reconfigure all the BSS information */ 2114 list_for_each_entry(sdata, &local->interfaces, list) { 2115 u32 changed; 2116 2117 if (!ieee80211_sdata_running(sdata)) 2118 continue; 2119 2120 ieee80211_assign_chanctx(local, sdata); 2121 2122 switch (sdata->vif.type) { 2123 case NL80211_IFTYPE_AP_VLAN: 2124 case NL80211_IFTYPE_MONITOR: 2125 break; 2126 default: 2127 ieee80211_reconfig_stations(sdata); 2128 /* fall through */ 2129 case NL80211_IFTYPE_AP: /* AP stations are handled later */ 2130 for (i = 0; i < IEEE80211_NUM_ACS; i++) 2131 drv_conf_tx(local, sdata, i, 2132 &sdata->tx_conf[i]); 2133 break; 2134 } 2135 2136 /* common change flags for all interface types */ 2137 changed = BSS_CHANGED_ERP_CTS_PROT | 2138 BSS_CHANGED_ERP_PREAMBLE | 2139 BSS_CHANGED_ERP_SLOT | 2140 BSS_CHANGED_HT | 2141 BSS_CHANGED_BASIC_RATES | 2142 BSS_CHANGED_BEACON_INT | 2143 BSS_CHANGED_BSSID | 2144 BSS_CHANGED_CQM | 2145 BSS_CHANGED_QOS | 2146 BSS_CHANGED_IDLE | 2147 BSS_CHANGED_TXPOWER | 2148 BSS_CHANGED_MCAST_RATE; 2149 2150 if (sdata->vif.mu_mimo_owner) 2151 changed |= BSS_CHANGED_MU_GROUPS; 2152 2153 switch (sdata->vif.type) { 2154 case NL80211_IFTYPE_STATION: 2155 changed |= BSS_CHANGED_ASSOC | 2156 BSS_CHANGED_ARP_FILTER | 2157 BSS_CHANGED_PS; 2158 2159 /* Re-send beacon info report to the driver */ 2160 if (sdata->u.mgd.have_beacon) 2161 changed |= BSS_CHANGED_BEACON_INFO; 2162 2163 if (sdata->vif.bss_conf.max_idle_period || 2164 sdata->vif.bss_conf.protected_keep_alive) 2165 changed |= BSS_CHANGED_KEEP_ALIVE; 2166 2167 sdata_lock(sdata); 2168 ieee80211_bss_info_change_notify(sdata, changed); 2169 sdata_unlock(sdata); 2170 break; 2171 case NL80211_IFTYPE_OCB: 2172 changed |= BSS_CHANGED_OCB; 2173 ieee80211_bss_info_change_notify(sdata, changed); 2174 break; 2175 case NL80211_IFTYPE_ADHOC: 2176 changed |= BSS_CHANGED_IBSS; 2177 /* fall through */ 2178 case NL80211_IFTYPE_AP: 2179 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS; 2180 2181 if (sdata->vif.bss_conf.ftm_responder == 1 && 2182 wiphy_ext_feature_isset(sdata->local->hw.wiphy, 2183 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER)) 2184 changed |= BSS_CHANGED_FTM_RESPONDER; 2185 2186 if (sdata->vif.type == NL80211_IFTYPE_AP) { 2187 changed |= BSS_CHANGED_AP_PROBE_RESP; 2188 2189 if (rcu_access_pointer(sdata->u.ap.beacon)) 2190 drv_start_ap(local, sdata); 2191 } 2192 2193 /* fall through */ 2194 case NL80211_IFTYPE_MESH_POINT: 2195 if (sdata->vif.bss_conf.enable_beacon) { 2196 changed |= BSS_CHANGED_BEACON | 2197 BSS_CHANGED_BEACON_ENABLED; 2198 ieee80211_bss_info_change_notify(sdata, changed); 2199 } 2200 break; 2201 case NL80211_IFTYPE_NAN: 2202 res = ieee80211_reconfig_nan(sdata); 2203 if (res < 0) { 2204 ieee80211_handle_reconfig_failure(local); 2205 return res; 2206 } 2207 break; 2208 case NL80211_IFTYPE_WDS: 2209 case NL80211_IFTYPE_AP_VLAN: 2210 case NL80211_IFTYPE_MONITOR: 2211 case NL80211_IFTYPE_P2P_DEVICE: 2212 /* nothing to do */ 2213 break; 2214 case NL80211_IFTYPE_UNSPECIFIED: 2215 case NUM_NL80211_IFTYPES: 2216 case NL80211_IFTYPE_P2P_CLIENT: 2217 case NL80211_IFTYPE_P2P_GO: 2218 WARN_ON(1); 2219 break; 2220 } 2221 } 2222 2223 ieee80211_recalc_ps(local); 2224 2225 /* 2226 * The sta might be in psm against the ap (e.g. because 2227 * this was the state before a hw restart), so we 2228 * explicitly send a null packet in order to make sure 2229 * it'll sync against the ap (and get out of psm). 2230 */ 2231 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { 2232 list_for_each_entry(sdata, &local->interfaces, list) { 2233 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2234 continue; 2235 if (!sdata->u.mgd.associated) 2236 continue; 2237 2238 ieee80211_send_nullfunc(local, sdata, false); 2239 } 2240 } 2241 2242 /* APs are now beaconing, add back stations */ 2243 mutex_lock(&local->sta_mtx); 2244 list_for_each_entry(sta, &local->sta_list, list) { 2245 enum ieee80211_sta_state state; 2246 2247 if (!sta->uploaded) 2248 continue; 2249 2250 if (sta->sdata->vif.type != NL80211_IFTYPE_AP && 2251 sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN) 2252 continue; 2253 2254 for (state = IEEE80211_STA_NOTEXIST; 2255 state < sta->sta_state; state++) 2256 WARN_ON(drv_sta_state(local, sta->sdata, sta, state, 2257 state + 1)); 2258 } 2259 mutex_unlock(&local->sta_mtx); 2260 2261 /* add back keys */ 2262 list_for_each_entry(sdata, &local->interfaces, list) 2263 ieee80211_reset_crypto_tx_tailroom(sdata); 2264 2265 list_for_each_entry(sdata, &local->interfaces, list) 2266 if (ieee80211_sdata_running(sdata)) 2267 ieee80211_enable_keys(sdata); 2268 2269 /* Reconfigure sched scan if it was interrupted by FW restart */ 2270 mutex_lock(&local->mtx); 2271 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, 2272 lockdep_is_held(&local->mtx)); 2273 sched_scan_req = rcu_dereference_protected(local->sched_scan_req, 2274 lockdep_is_held(&local->mtx)); 2275 if (sched_scan_sdata && sched_scan_req) 2276 /* 2277 * Sched scan stopped, but we don't want to report it. Instead, 2278 * we're trying to reschedule. However, if more than one scan 2279 * plan was set, we cannot reschedule since we don't know which 2280 * scan plan was currently running (and some scan plans may have 2281 * already finished). 2282 */ 2283 if (sched_scan_req->n_scan_plans > 1 || 2284 __ieee80211_request_sched_scan_start(sched_scan_sdata, 2285 sched_scan_req)) { 2286 RCU_INIT_POINTER(local->sched_scan_sdata, NULL); 2287 RCU_INIT_POINTER(local->sched_scan_req, NULL); 2288 sched_scan_stopped = true; 2289 } 2290 mutex_unlock(&local->mtx); 2291 2292 if (sched_scan_stopped) 2293 cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy, 0); 2294 2295 wake_up: 2296 2297 if (local->monitors == local->open_count && local->monitors > 0) 2298 ieee80211_add_virtual_monitor(local); 2299 2300 /* 2301 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation 2302 * sessions can be established after a resume. 2303 * 2304 * Also tear down aggregation sessions since reconfiguring 2305 * them in a hardware restart scenario is not easily done 2306 * right now, and the hardware will have lost information 2307 * about the sessions, but we and the AP still think they 2308 * are active. This is really a workaround though. 2309 */ 2310 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { 2311 mutex_lock(&local->sta_mtx); 2312 2313 list_for_each_entry(sta, &local->sta_list, list) { 2314 if (!local->resuming) 2315 ieee80211_sta_tear_down_BA_sessions( 2316 sta, AGG_STOP_LOCAL_REQUEST); 2317 clear_sta_flag(sta, WLAN_STA_BLOCK_BA); 2318 } 2319 2320 mutex_unlock(&local->sta_mtx); 2321 } 2322 2323 if (local->in_reconfig) { 2324 local->in_reconfig = false; 2325 barrier(); 2326 2327 /* Restart deferred ROCs */ 2328 mutex_lock(&local->mtx); 2329 ieee80211_start_next_roc(local); 2330 mutex_unlock(&local->mtx); 2331 } 2332 2333 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 2334 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 2335 false); 2336 2337 /* 2338 * If this is for hw restart things are still running. 2339 * We may want to change that later, however. 2340 */ 2341 if (local->open_count && (!suspended || reconfig_due_to_wowlan)) 2342 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART); 2343 2344 if (!suspended) 2345 return 0; 2346 2347 #ifdef CONFIG_PM 2348 /* first set suspended false, then resuming */ 2349 local->suspended = false; 2350 mb(); 2351 local->resuming = false; 2352 2353 ieee80211_flush_completed_scan(local, false); 2354 2355 if (local->open_count && !reconfig_due_to_wowlan) 2356 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND); 2357 2358 list_for_each_entry(sdata, &local->interfaces, list) { 2359 if (!ieee80211_sdata_running(sdata)) 2360 continue; 2361 if (sdata->vif.type == NL80211_IFTYPE_STATION) 2362 ieee80211_sta_restart(sdata); 2363 } 2364 2365 mod_timer(&local->sta_cleanup, jiffies + 1); 2366 #else 2367 WARN_ON(1); 2368 #endif 2369 2370 return 0; 2371 } 2372 2373 void ieee80211_resume_disconnect(struct ieee80211_vif *vif) 2374 { 2375 struct ieee80211_sub_if_data *sdata; 2376 struct ieee80211_local *local; 2377 struct ieee80211_key *key; 2378 2379 if (WARN_ON(!vif)) 2380 return; 2381 2382 sdata = vif_to_sdata(vif); 2383 local = sdata->local; 2384 2385 if (WARN_ON(!local->resuming)) 2386 return; 2387 2388 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) 2389 return; 2390 2391 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME; 2392 2393 mutex_lock(&local->key_mtx); 2394 list_for_each_entry(key, &sdata->key_list, list) 2395 key->flags |= KEY_FLAG_TAINTED; 2396 mutex_unlock(&local->key_mtx); 2397 } 2398 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); 2399 2400 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) 2401 { 2402 struct ieee80211_local *local = sdata->local; 2403 struct ieee80211_chanctx_conf *chanctx_conf; 2404 struct ieee80211_chanctx *chanctx; 2405 2406 mutex_lock(&local->chanctx_mtx); 2407 2408 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 2409 lockdep_is_held(&local->chanctx_mtx)); 2410 2411 /* 2412 * This function can be called from a work, thus it may be possible 2413 * that the chanctx_conf is removed (due to a disconnection, for 2414 * example). 2415 * So nothing should be done in such case. 2416 */ 2417 if (!chanctx_conf) 2418 goto unlock; 2419 2420 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 2421 ieee80211_recalc_smps_chanctx(local, chanctx); 2422 unlock: 2423 mutex_unlock(&local->chanctx_mtx); 2424 } 2425 2426 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata) 2427 { 2428 struct ieee80211_local *local = sdata->local; 2429 struct ieee80211_chanctx_conf *chanctx_conf; 2430 struct ieee80211_chanctx *chanctx; 2431 2432 mutex_lock(&local->chanctx_mtx); 2433 2434 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 2435 lockdep_is_held(&local->chanctx_mtx)); 2436 2437 if (WARN_ON_ONCE(!chanctx_conf)) 2438 goto unlock; 2439 2440 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 2441 ieee80211_recalc_chanctx_min_def(local, chanctx); 2442 unlock: 2443 mutex_unlock(&local->chanctx_mtx); 2444 } 2445 2446 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) 2447 { 2448 size_t pos = offset; 2449 2450 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) 2451 pos += 2 + ies[pos + 1]; 2452 2453 return pos; 2454 } 2455 2456 static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata, 2457 int rssi_min_thold, 2458 int rssi_max_thold) 2459 { 2460 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold); 2461 2462 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 2463 return; 2464 2465 /* 2466 * Scale up threshold values before storing it, as the RSSI averaging 2467 * algorithm uses a scaled up value as well. Change this scaling 2468 * factor if the RSSI averaging algorithm changes. 2469 */ 2470 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16; 2471 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16; 2472 } 2473 2474 void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, 2475 int rssi_min_thold, 2476 int rssi_max_thold) 2477 { 2478 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2479 2480 WARN_ON(rssi_min_thold == rssi_max_thold || 2481 rssi_min_thold > rssi_max_thold); 2482 2483 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold, 2484 rssi_max_thold); 2485 } 2486 EXPORT_SYMBOL(ieee80211_enable_rssi_reports); 2487 2488 void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif) 2489 { 2490 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2491 2492 _ieee80211_enable_rssi_reports(sdata, 0, 0); 2493 } 2494 EXPORT_SYMBOL(ieee80211_disable_rssi_reports); 2495 2496 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2497 u16 cap) 2498 { 2499 __le16 tmp; 2500 2501 *pos++ = WLAN_EID_HT_CAPABILITY; 2502 *pos++ = sizeof(struct ieee80211_ht_cap); 2503 memset(pos, 0, sizeof(struct ieee80211_ht_cap)); 2504 2505 /* capability flags */ 2506 tmp = cpu_to_le16(cap); 2507 memcpy(pos, &tmp, sizeof(u16)); 2508 pos += sizeof(u16); 2509 2510 /* AMPDU parameters */ 2511 *pos++ = ht_cap->ampdu_factor | 2512 (ht_cap->ampdu_density << 2513 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); 2514 2515 /* MCS set */ 2516 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); 2517 pos += sizeof(ht_cap->mcs); 2518 2519 /* extended capabilities */ 2520 pos += sizeof(__le16); 2521 2522 /* BF capabilities */ 2523 pos += sizeof(__le32); 2524 2525 /* antenna selection */ 2526 pos += sizeof(u8); 2527 2528 return pos; 2529 } 2530 2531 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2532 u32 cap) 2533 { 2534 __le32 tmp; 2535 2536 *pos++ = WLAN_EID_VHT_CAPABILITY; 2537 *pos++ = sizeof(struct ieee80211_vht_cap); 2538 memset(pos, 0, sizeof(struct ieee80211_vht_cap)); 2539 2540 /* capability flags */ 2541 tmp = cpu_to_le32(cap); 2542 memcpy(pos, &tmp, sizeof(u32)); 2543 pos += sizeof(u32); 2544 2545 /* VHT MCS set */ 2546 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); 2547 pos += sizeof(vht_cap->vht_mcs); 2548 2549 return pos; 2550 } 2551 2552 u8 *ieee80211_ie_build_he_cap(u8 *pos, 2553 const struct ieee80211_sta_he_cap *he_cap, 2554 u8 *end) 2555 { 2556 u8 n; 2557 u8 ie_len; 2558 u8 *orig_pos = pos; 2559 2560 /* Make sure we have place for the IE */ 2561 /* 2562 * TODO: the 1 added is because this temporarily is under the EXTENSION 2563 * IE. Get rid of it when it moves. 2564 */ 2565 if (!he_cap) 2566 return orig_pos; 2567 2568 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem); 2569 ie_len = 2 + 1 + 2570 sizeof(he_cap->he_cap_elem) + n + 2571 ieee80211_he_ppe_size(he_cap->ppe_thres[0], 2572 he_cap->he_cap_elem.phy_cap_info); 2573 2574 if ((end - pos) < ie_len) 2575 return orig_pos; 2576 2577 *pos++ = WLAN_EID_EXTENSION; 2578 pos++; /* We'll set the size later below */ 2579 *pos++ = WLAN_EID_EXT_HE_CAPABILITY; 2580 2581 /* Fixed data */ 2582 memcpy(pos, &he_cap->he_cap_elem, sizeof(he_cap->he_cap_elem)); 2583 pos += sizeof(he_cap->he_cap_elem); 2584 2585 memcpy(pos, &he_cap->he_mcs_nss_supp, n); 2586 pos += n; 2587 2588 /* Check if PPE Threshold should be present */ 2589 if ((he_cap->he_cap_elem.phy_cap_info[6] & 2590 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0) 2591 goto end; 2592 2593 /* 2594 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm: 2595 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK) 2596 */ 2597 n = hweight8(he_cap->ppe_thres[0] & 2598 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK); 2599 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >> 2600 IEEE80211_PPE_THRES_NSS_POS)); 2601 2602 /* 2603 * Each pair is 6 bits, and we need to add the 7 "header" bits to the 2604 * total size. 2605 */ 2606 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7; 2607 n = DIV_ROUND_UP(n, 8); 2608 2609 /* Copy PPE Thresholds */ 2610 memcpy(pos, &he_cap->ppe_thres, n); 2611 pos += n; 2612 2613 end: 2614 orig_pos[1] = (pos - orig_pos) - 2; 2615 return pos; 2616 } 2617 2618 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2619 const struct cfg80211_chan_def *chandef, 2620 u16 prot_mode, bool rifs_mode) 2621 { 2622 struct ieee80211_ht_operation *ht_oper; 2623 /* Build HT Information */ 2624 *pos++ = WLAN_EID_HT_OPERATION; 2625 *pos++ = sizeof(struct ieee80211_ht_operation); 2626 ht_oper = (struct ieee80211_ht_operation *)pos; 2627 ht_oper->primary_chan = ieee80211_frequency_to_channel( 2628 chandef->chan->center_freq); 2629 switch (chandef->width) { 2630 case NL80211_CHAN_WIDTH_160: 2631 case NL80211_CHAN_WIDTH_80P80: 2632 case NL80211_CHAN_WIDTH_80: 2633 case NL80211_CHAN_WIDTH_40: 2634 if (chandef->center_freq1 > chandef->chan->center_freq) 2635 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 2636 else 2637 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 2638 break; 2639 default: 2640 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; 2641 break; 2642 } 2643 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 2644 chandef->width != NL80211_CHAN_WIDTH_20_NOHT && 2645 chandef->width != NL80211_CHAN_WIDTH_20) 2646 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; 2647 2648 if (rifs_mode) 2649 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE; 2650 2651 ht_oper->operation_mode = cpu_to_le16(prot_mode); 2652 ht_oper->stbc_param = 0x0000; 2653 2654 /* It seems that Basic MCS set and Supported MCS set 2655 are identical for the first 10 bytes */ 2656 memset(&ht_oper->basic_set, 0, 16); 2657 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); 2658 2659 return pos + sizeof(struct ieee80211_ht_operation); 2660 } 2661 2662 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2663 const struct cfg80211_chan_def *chandef) 2664 { 2665 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */ 2666 *pos++ = 3; /* IE length */ 2667 /* New channel width */ 2668 switch (chandef->width) { 2669 case NL80211_CHAN_WIDTH_80: 2670 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ; 2671 break; 2672 case NL80211_CHAN_WIDTH_160: 2673 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ; 2674 break; 2675 case NL80211_CHAN_WIDTH_80P80: 2676 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ; 2677 break; 2678 default: 2679 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT; 2680 } 2681 2682 /* new center frequency segment 0 */ 2683 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1); 2684 /* new center frequency segment 1 */ 2685 if (chandef->center_freq2) 2686 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2); 2687 else 2688 *pos++ = 0; 2689 } 2690 2691 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2692 const struct cfg80211_chan_def *chandef) 2693 { 2694 struct ieee80211_vht_operation *vht_oper; 2695 2696 *pos++ = WLAN_EID_VHT_OPERATION; 2697 *pos++ = sizeof(struct ieee80211_vht_operation); 2698 vht_oper = (struct ieee80211_vht_operation *)pos; 2699 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel( 2700 chandef->center_freq1); 2701 if (chandef->center_freq2) 2702 vht_oper->center_freq_seg1_idx = 2703 ieee80211_frequency_to_channel(chandef->center_freq2); 2704 else 2705 vht_oper->center_freq_seg1_idx = 0x00; 2706 2707 switch (chandef->width) { 2708 case NL80211_CHAN_WIDTH_160: 2709 /* 2710 * Convert 160 MHz channel width to new style as interop 2711 * workaround. 2712 */ 2713 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2714 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx; 2715 if (chandef->chan->center_freq < chandef->center_freq1) 2716 vht_oper->center_freq_seg0_idx -= 8; 2717 else 2718 vht_oper->center_freq_seg0_idx += 8; 2719 break; 2720 case NL80211_CHAN_WIDTH_80P80: 2721 /* 2722 * Convert 80+80 MHz channel width to new style as interop 2723 * workaround. 2724 */ 2725 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2726 break; 2727 case NL80211_CHAN_WIDTH_80: 2728 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2729 break; 2730 default: 2731 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; 2732 break; 2733 } 2734 2735 /* don't require special VHT peer rates */ 2736 vht_oper->basic_mcs_set = cpu_to_le16(0xffff); 2737 2738 return pos + sizeof(struct ieee80211_vht_operation); 2739 } 2740 2741 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2742 struct cfg80211_chan_def *chandef) 2743 { 2744 enum nl80211_channel_type channel_type; 2745 2746 if (!ht_oper) 2747 return false; 2748 2749 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { 2750 case IEEE80211_HT_PARAM_CHA_SEC_NONE: 2751 channel_type = NL80211_CHAN_HT20; 2752 break; 2753 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: 2754 channel_type = NL80211_CHAN_HT40PLUS; 2755 break; 2756 case IEEE80211_HT_PARAM_CHA_SEC_BELOW: 2757 channel_type = NL80211_CHAN_HT40MINUS; 2758 break; 2759 default: 2760 channel_type = NL80211_CHAN_NO_HT; 2761 return false; 2762 } 2763 2764 cfg80211_chandef_create(chandef, chandef->chan, channel_type); 2765 return true; 2766 } 2767 2768 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, 2769 const struct ieee80211_vht_operation *oper, 2770 const struct ieee80211_ht_operation *htop, 2771 struct cfg80211_chan_def *chandef) 2772 { 2773 struct cfg80211_chan_def new = *chandef; 2774 int cf0, cf1; 2775 int ccfs0, ccfs1, ccfs2; 2776 int ccf0, ccf1; 2777 2778 if (!oper || !htop) 2779 return false; 2780 2781 ccfs0 = oper->center_freq_seg0_idx; 2782 ccfs1 = oper->center_freq_seg1_idx; 2783 ccfs2 = (le16_to_cpu(htop->operation_mode) & 2784 IEEE80211_HT_OP_MODE_CCFS2_MASK) 2785 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT; 2786 2787 /* when parsing (and we know how to) CCFS1 and CCFS2 are equivalent */ 2788 ccf0 = ccfs0; 2789 ccf1 = ccfs1; 2790 if (!ccfs1 && ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW)) 2791 ccf1 = ccfs2; 2792 2793 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band); 2794 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band); 2795 2796 switch (oper->chan_width) { 2797 case IEEE80211_VHT_CHANWIDTH_USE_HT: 2798 /* just use HT information directly */ 2799 break; 2800 case IEEE80211_VHT_CHANWIDTH_80MHZ: 2801 new.width = NL80211_CHAN_WIDTH_80; 2802 new.center_freq1 = cf0; 2803 /* If needed, adjust based on the newer interop workaround. */ 2804 if (ccf1) { 2805 unsigned int diff; 2806 2807 diff = abs(ccf1 - ccf0); 2808 if (diff == 8) { 2809 new.width = NL80211_CHAN_WIDTH_160; 2810 new.center_freq1 = cf1; 2811 } else if (diff > 8) { 2812 new.width = NL80211_CHAN_WIDTH_80P80; 2813 new.center_freq2 = cf1; 2814 } 2815 } 2816 break; 2817 case IEEE80211_VHT_CHANWIDTH_160MHZ: 2818 /* deprecated encoding */ 2819 new.width = NL80211_CHAN_WIDTH_160; 2820 new.center_freq1 = cf0; 2821 break; 2822 case IEEE80211_VHT_CHANWIDTH_80P80MHZ: 2823 /* deprecated encoding */ 2824 new.width = NL80211_CHAN_WIDTH_80P80; 2825 new.center_freq1 = cf0; 2826 new.center_freq2 = cf1; 2827 break; 2828 default: 2829 return false; 2830 } 2831 2832 if (!cfg80211_chandef_valid(&new)) 2833 return false; 2834 2835 *chandef = new; 2836 return true; 2837 } 2838 2839 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2840 const struct ieee80211_supported_band *sband, 2841 const u8 *srates, int srates_len, u32 *rates) 2842 { 2843 u32 rate_flags = ieee80211_chandef_rate_flags(chandef); 2844 int shift = ieee80211_chandef_get_shift(chandef); 2845 struct ieee80211_rate *br; 2846 int brate, rate, i, j, count = 0; 2847 2848 *rates = 0; 2849 2850 for (i = 0; i < srates_len; i++) { 2851 rate = srates[i] & 0x7f; 2852 2853 for (j = 0; j < sband->n_bitrates; j++) { 2854 br = &sband->bitrates[j]; 2855 if ((rate_flags & br->flags) != rate_flags) 2856 continue; 2857 2858 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); 2859 if (brate == rate) { 2860 *rates |= BIT(j); 2861 count++; 2862 break; 2863 } 2864 } 2865 } 2866 return count; 2867 } 2868 2869 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2870 struct sk_buff *skb, bool need_basic, 2871 enum nl80211_band band) 2872 { 2873 struct ieee80211_local *local = sdata->local; 2874 struct ieee80211_supported_band *sband; 2875 int rate, shift; 2876 u8 i, rates, *pos; 2877 u32 basic_rates = sdata->vif.bss_conf.basic_rates; 2878 u32 rate_flags; 2879 2880 shift = ieee80211_vif_get_shift(&sdata->vif); 2881 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 2882 sband = local->hw.wiphy->bands[band]; 2883 rates = 0; 2884 for (i = 0; i < sband->n_bitrates; i++) { 2885 if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 2886 continue; 2887 rates++; 2888 } 2889 if (rates > 8) 2890 rates = 8; 2891 2892 if (skb_tailroom(skb) < rates + 2) 2893 return -ENOMEM; 2894 2895 pos = skb_put(skb, rates + 2); 2896 *pos++ = WLAN_EID_SUPP_RATES; 2897 *pos++ = rates; 2898 for (i = 0; i < rates; i++) { 2899 u8 basic = 0; 2900 if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 2901 continue; 2902 2903 if (need_basic && basic_rates & BIT(i)) 2904 basic = 0x80; 2905 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 2906 5 * (1 << shift)); 2907 *pos++ = basic | (u8) rate; 2908 } 2909 2910 return 0; 2911 } 2912 2913 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2914 struct sk_buff *skb, bool need_basic, 2915 enum nl80211_band band) 2916 { 2917 struct ieee80211_local *local = sdata->local; 2918 struct ieee80211_supported_band *sband; 2919 int rate, shift; 2920 u8 i, exrates, *pos; 2921 u32 basic_rates = sdata->vif.bss_conf.basic_rates; 2922 u32 rate_flags; 2923 2924 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef); 2925 shift = ieee80211_vif_get_shift(&sdata->vif); 2926 2927 sband = local->hw.wiphy->bands[band]; 2928 exrates = 0; 2929 for (i = 0; i < sband->n_bitrates; i++) { 2930 if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 2931 continue; 2932 exrates++; 2933 } 2934 2935 if (exrates > 8) 2936 exrates -= 8; 2937 else 2938 exrates = 0; 2939 2940 if (skb_tailroom(skb) < exrates + 2) 2941 return -ENOMEM; 2942 2943 if (exrates) { 2944 pos = skb_put(skb, exrates + 2); 2945 *pos++ = WLAN_EID_EXT_SUPP_RATES; 2946 *pos++ = exrates; 2947 for (i = 8; i < sband->n_bitrates; i++) { 2948 u8 basic = 0; 2949 if ((rate_flags & sband->bitrates[i].flags) 2950 != rate_flags) 2951 continue; 2952 if (need_basic && basic_rates & BIT(i)) 2953 basic = 0x80; 2954 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 2955 5 * (1 << shift)); 2956 *pos++ = basic | (u8) rate; 2957 } 2958 } 2959 return 0; 2960 } 2961 2962 int ieee80211_ave_rssi(struct ieee80211_vif *vif) 2963 { 2964 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2965 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 2966 2967 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) { 2968 /* non-managed type inferfaces */ 2969 return 0; 2970 } 2971 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal); 2972 } 2973 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); 2974 2975 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) 2976 { 2977 if (!mcs) 2978 return 1; 2979 2980 /* TODO: consider rx_highest */ 2981 2982 if (mcs->rx_mask[3]) 2983 return 4; 2984 if (mcs->rx_mask[2]) 2985 return 3; 2986 if (mcs->rx_mask[1]) 2987 return 2; 2988 return 1; 2989 } 2990 2991 /** 2992 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame 2993 * @local: mac80211 hw info struct 2994 * @status: RX status 2995 * @mpdu_len: total MPDU length (including FCS) 2996 * @mpdu_offset: offset into MPDU to calculate timestamp at 2997 * 2998 * This function calculates the RX timestamp at the given MPDU offset, taking 2999 * into account what the RX timestamp was. An offset of 0 will just normalize 3000 * the timestamp to TSF at beginning of MPDU reception. 3001 */ 3002 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 3003 struct ieee80211_rx_status *status, 3004 unsigned int mpdu_len, 3005 unsigned int mpdu_offset) 3006 { 3007 u64 ts = status->mactime; 3008 struct rate_info ri; 3009 u16 rate; 3010 3011 if (WARN_ON(!ieee80211_have_rx_timestamp(status))) 3012 return 0; 3013 3014 memset(&ri, 0, sizeof(ri)); 3015 3016 ri.bw = status->bw; 3017 3018 /* Fill cfg80211 rate info */ 3019 switch (status->encoding) { 3020 case RX_ENC_HT: 3021 ri.mcs = status->rate_idx; 3022 ri.flags |= RATE_INFO_FLAGS_MCS; 3023 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3024 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3025 break; 3026 case RX_ENC_VHT: 3027 ri.flags |= RATE_INFO_FLAGS_VHT_MCS; 3028 ri.mcs = status->rate_idx; 3029 ri.nss = status->nss; 3030 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3031 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3032 break; 3033 default: 3034 WARN_ON(1); 3035 /* fall through */ 3036 case RX_ENC_LEGACY: { 3037 struct ieee80211_supported_band *sband; 3038 int shift = 0; 3039 int bitrate; 3040 3041 switch (status->bw) { 3042 case RATE_INFO_BW_10: 3043 shift = 1; 3044 break; 3045 case RATE_INFO_BW_5: 3046 shift = 2; 3047 break; 3048 } 3049 3050 sband = local->hw.wiphy->bands[status->band]; 3051 bitrate = sband->bitrates[status->rate_idx].bitrate; 3052 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift)); 3053 3054 if (status->flag & RX_FLAG_MACTIME_PLCP_START) { 3055 /* TODO: handle HT/VHT preambles */ 3056 if (status->band == NL80211_BAND_5GHZ) { 3057 ts += 20 << shift; 3058 mpdu_offset += 2; 3059 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) { 3060 ts += 96; 3061 } else { 3062 ts += 192; 3063 } 3064 } 3065 break; 3066 } 3067 } 3068 3069 rate = cfg80211_calculate_bitrate(&ri); 3070 if (WARN_ONCE(!rate, 3071 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n", 3072 (unsigned long long)status->flag, status->rate_idx, 3073 status->nss)) 3074 return 0; 3075 3076 /* rewind from end of MPDU */ 3077 if (status->flag & RX_FLAG_MACTIME_END) 3078 ts -= mpdu_len * 8 * 10 / rate; 3079 3080 ts += mpdu_offset * 8 * 10 / rate; 3081 3082 return ts; 3083 } 3084 3085 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) 3086 { 3087 struct ieee80211_sub_if_data *sdata; 3088 struct cfg80211_chan_def chandef; 3089 3090 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */ 3091 ASSERT_RTNL(); 3092 3093 mutex_lock(&local->mtx); 3094 list_for_each_entry(sdata, &local->interfaces, list) { 3095 /* it might be waiting for the local->mtx, but then 3096 * by the time it gets it, sdata->wdev.cac_started 3097 * will no longer be true 3098 */ 3099 cancel_delayed_work(&sdata->dfs_cac_timer_work); 3100 3101 if (sdata->wdev.cac_started) { 3102 chandef = sdata->vif.bss_conf.chandef; 3103 ieee80211_vif_release_channel(sdata); 3104 cfg80211_cac_event(sdata->dev, 3105 &chandef, 3106 NL80211_RADAR_CAC_ABORTED, 3107 GFP_KERNEL); 3108 } 3109 } 3110 mutex_unlock(&local->mtx); 3111 } 3112 3113 void ieee80211_dfs_radar_detected_work(struct work_struct *work) 3114 { 3115 struct ieee80211_local *local = 3116 container_of(work, struct ieee80211_local, radar_detected_work); 3117 struct cfg80211_chan_def chandef = local->hw.conf.chandef; 3118 struct ieee80211_chanctx *ctx; 3119 int num_chanctx = 0; 3120 3121 mutex_lock(&local->chanctx_mtx); 3122 list_for_each_entry(ctx, &local->chanctx_list, list) { 3123 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) 3124 continue; 3125 3126 num_chanctx++; 3127 chandef = ctx->conf.def; 3128 } 3129 mutex_unlock(&local->chanctx_mtx); 3130 3131 rtnl_lock(); 3132 ieee80211_dfs_cac_cancel(local); 3133 rtnl_unlock(); 3134 3135 if (num_chanctx > 1) 3136 /* XXX: multi-channel is not supported yet */ 3137 WARN_ON(1); 3138 else 3139 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); 3140 } 3141 3142 void ieee80211_radar_detected(struct ieee80211_hw *hw) 3143 { 3144 struct ieee80211_local *local = hw_to_local(hw); 3145 3146 trace_api_radar_detected(local); 3147 3148 schedule_work(&local->radar_detected_work); 3149 } 3150 EXPORT_SYMBOL(ieee80211_radar_detected); 3151 3152 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c) 3153 { 3154 u32 ret; 3155 int tmp; 3156 3157 switch (c->width) { 3158 case NL80211_CHAN_WIDTH_20: 3159 c->width = NL80211_CHAN_WIDTH_20_NOHT; 3160 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; 3161 break; 3162 case NL80211_CHAN_WIDTH_40: 3163 c->width = NL80211_CHAN_WIDTH_20; 3164 c->center_freq1 = c->chan->center_freq; 3165 ret = IEEE80211_STA_DISABLE_40MHZ | 3166 IEEE80211_STA_DISABLE_VHT; 3167 break; 3168 case NL80211_CHAN_WIDTH_80: 3169 tmp = (30 + c->chan->center_freq - c->center_freq1)/20; 3170 /* n_P40 */ 3171 tmp /= 2; 3172 /* freq_P40 */ 3173 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; 3174 c->width = NL80211_CHAN_WIDTH_40; 3175 ret = IEEE80211_STA_DISABLE_VHT; 3176 break; 3177 case NL80211_CHAN_WIDTH_80P80: 3178 c->center_freq2 = 0; 3179 c->width = NL80211_CHAN_WIDTH_80; 3180 ret = IEEE80211_STA_DISABLE_80P80MHZ | 3181 IEEE80211_STA_DISABLE_160MHZ; 3182 break; 3183 case NL80211_CHAN_WIDTH_160: 3184 /* n_P20 */ 3185 tmp = (70 + c->chan->center_freq - c->center_freq1)/20; 3186 /* n_P80 */ 3187 tmp /= 4; 3188 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; 3189 c->width = NL80211_CHAN_WIDTH_80; 3190 ret = IEEE80211_STA_DISABLE_80P80MHZ | 3191 IEEE80211_STA_DISABLE_160MHZ; 3192 break; 3193 default: 3194 case NL80211_CHAN_WIDTH_20_NOHT: 3195 WARN_ON_ONCE(1); 3196 c->width = NL80211_CHAN_WIDTH_20_NOHT; 3197 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; 3198 break; 3199 case NL80211_CHAN_WIDTH_5: 3200 case NL80211_CHAN_WIDTH_10: 3201 WARN_ON_ONCE(1); 3202 /* keep c->width */ 3203 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; 3204 break; 3205 } 3206 3207 WARN_ON_ONCE(!cfg80211_chandef_valid(c)); 3208 3209 return ret; 3210 } 3211 3212 /* 3213 * Returns true if smps_mode_new is strictly more restrictive than 3214 * smps_mode_old. 3215 */ 3216 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 3217 enum ieee80211_smps_mode smps_mode_new) 3218 { 3219 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || 3220 smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) 3221 return false; 3222 3223 switch (smps_mode_old) { 3224 case IEEE80211_SMPS_STATIC: 3225 return false; 3226 case IEEE80211_SMPS_DYNAMIC: 3227 return smps_mode_new == IEEE80211_SMPS_STATIC; 3228 case IEEE80211_SMPS_OFF: 3229 return smps_mode_new != IEEE80211_SMPS_OFF; 3230 default: 3231 WARN_ON(1); 3232 } 3233 3234 return false; 3235 } 3236 3237 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 3238 struct cfg80211_csa_settings *csa_settings) 3239 { 3240 struct sk_buff *skb; 3241 struct ieee80211_mgmt *mgmt; 3242 struct ieee80211_local *local = sdata->local; 3243 int freq; 3244 int hdr_len = offsetofend(struct ieee80211_mgmt, 3245 u.action.u.chan_switch); 3246 u8 *pos; 3247 3248 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3249 sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 3250 return -EOPNOTSUPP; 3251 3252 skb = dev_alloc_skb(local->tx_headroom + hdr_len + 3253 5 + /* channel switch announcement element */ 3254 3 + /* secondary channel offset element */ 3255 5 + /* wide bandwidth channel switch announcement */ 3256 8); /* mesh channel switch parameters element */ 3257 if (!skb) 3258 return -ENOMEM; 3259 3260 skb_reserve(skb, local->tx_headroom); 3261 mgmt = skb_put_zero(skb, hdr_len); 3262 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3263 IEEE80211_STYPE_ACTION); 3264 3265 eth_broadcast_addr(mgmt->da); 3266 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3267 if (ieee80211_vif_is_mesh(&sdata->vif)) { 3268 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); 3269 } else { 3270 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 3271 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 3272 } 3273 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; 3274 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; 3275 pos = skb_put(skb, 5); 3276 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ 3277 *pos++ = 3; /* IE length */ 3278 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ 3279 freq = csa_settings->chandef.chan->center_freq; 3280 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ 3281 *pos++ = csa_settings->count; /* count */ 3282 3283 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { 3284 enum nl80211_channel_type ch_type; 3285 3286 skb_put(skb, 3); 3287 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ 3288 *pos++ = 1; /* IE length */ 3289 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); 3290 if (ch_type == NL80211_CHAN_HT40PLUS) 3291 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 3292 else 3293 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 3294 } 3295 3296 if (ieee80211_vif_is_mesh(&sdata->vif)) { 3297 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3298 3299 skb_put(skb, 8); 3300 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ 3301 *pos++ = 6; /* IE length */ 3302 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ 3303 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ 3304 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; 3305 *pos++ |= csa_settings->block_tx ? 3306 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; 3307 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ 3308 pos += 2; 3309 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ 3310 pos += 2; 3311 } 3312 3313 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 || 3314 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 || 3315 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) { 3316 skb_put(skb, 5); 3317 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef); 3318 } 3319 3320 ieee80211_tx_skb(sdata, skb); 3321 return 0; 3322 } 3323 3324 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs) 3325 { 3326 return !(cs == NULL || cs->cipher == 0 || 3327 cs->hdr_len < cs->pn_len + cs->pn_off || 3328 cs->hdr_len <= cs->key_idx_off || 3329 cs->key_idx_shift > 7 || 3330 cs->key_idx_mask == 0); 3331 } 3332 3333 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n) 3334 { 3335 int i; 3336 3337 /* Ensure we have enough iftype bitmap space for all iftype values */ 3338 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype)); 3339 3340 for (i = 0; i < n; i++) 3341 if (!ieee80211_cs_valid(&cs[i])) 3342 return false; 3343 3344 return true; 3345 } 3346 3347 const struct ieee80211_cipher_scheme * 3348 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 3349 enum nl80211_iftype iftype) 3350 { 3351 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes; 3352 int n = local->hw.n_cipher_schemes; 3353 int i; 3354 const struct ieee80211_cipher_scheme *cs = NULL; 3355 3356 for (i = 0; i < n; i++) { 3357 if (l[i].cipher == cipher) { 3358 cs = &l[i]; 3359 break; 3360 } 3361 } 3362 3363 if (!cs || !(cs->iftype & BIT(iftype))) 3364 return NULL; 3365 3366 return cs; 3367 } 3368 3369 int ieee80211_cs_headroom(struct ieee80211_local *local, 3370 struct cfg80211_crypto_settings *crypto, 3371 enum nl80211_iftype iftype) 3372 { 3373 const struct ieee80211_cipher_scheme *cs; 3374 int headroom = IEEE80211_ENCRYPT_HEADROOM; 3375 int i; 3376 3377 for (i = 0; i < crypto->n_ciphers_pairwise; i++) { 3378 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i], 3379 iftype); 3380 3381 if (cs && headroom < cs->hdr_len) 3382 headroom = cs->hdr_len; 3383 } 3384 3385 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype); 3386 if (cs && headroom < cs->hdr_len) 3387 headroom = cs->hdr_len; 3388 3389 return headroom; 3390 } 3391 3392 static bool 3393 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) 3394 { 3395 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); 3396 int skip; 3397 3398 if (end > 0) 3399 return false; 3400 3401 /* One shot NOA */ 3402 if (data->count[i] == 1) 3403 return false; 3404 3405 if (data->desc[i].interval == 0) 3406 return false; 3407 3408 /* End time is in the past, check for repetitions */ 3409 skip = DIV_ROUND_UP(-end, data->desc[i].interval); 3410 if (data->count[i] < 255) { 3411 if (data->count[i] <= skip) { 3412 data->count[i] = 0; 3413 return false; 3414 } 3415 3416 data->count[i] -= skip; 3417 } 3418 3419 data->desc[i].start += skip * data->desc[i].interval; 3420 3421 return true; 3422 } 3423 3424 static bool 3425 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, 3426 s32 *offset) 3427 { 3428 bool ret = false; 3429 int i; 3430 3431 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3432 s32 cur; 3433 3434 if (!data->count[i]) 3435 continue; 3436 3437 if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) 3438 ret = true; 3439 3440 cur = data->desc[i].start - tsf; 3441 if (cur > *offset) 3442 continue; 3443 3444 cur = data->desc[i].start + data->desc[i].duration - tsf; 3445 if (cur > *offset) 3446 *offset = cur; 3447 } 3448 3449 return ret; 3450 } 3451 3452 static u32 3453 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) 3454 { 3455 s32 offset = 0; 3456 int tries = 0; 3457 /* 3458 * arbitrary limit, used to avoid infinite loops when combined NoA 3459 * descriptors cover the full time period. 3460 */ 3461 int max_tries = 5; 3462 3463 ieee80211_extend_absent_time(data, tsf, &offset); 3464 do { 3465 if (!ieee80211_extend_absent_time(data, tsf, &offset)) 3466 break; 3467 3468 tries++; 3469 } while (tries < max_tries); 3470 3471 return offset; 3472 } 3473 3474 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) 3475 { 3476 u32 next_offset = BIT(31) - 1; 3477 int i; 3478 3479 data->absent = 0; 3480 data->has_next_tsf = false; 3481 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3482 s32 start; 3483 3484 if (!data->count[i]) 3485 continue; 3486 3487 ieee80211_extend_noa_desc(data, tsf, i); 3488 start = data->desc[i].start - tsf; 3489 if (start <= 0) 3490 data->absent |= BIT(i); 3491 3492 if (next_offset > start) 3493 next_offset = start; 3494 3495 data->has_next_tsf = true; 3496 } 3497 3498 if (data->absent) 3499 next_offset = ieee80211_get_noa_absent_time(data, tsf); 3500 3501 data->next_tsf = tsf + next_offset; 3502 } 3503 EXPORT_SYMBOL(ieee80211_update_p2p_noa); 3504 3505 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, 3506 struct ieee80211_noa_data *data, u32 tsf) 3507 { 3508 int ret = 0; 3509 int i; 3510 3511 memset(data, 0, sizeof(*data)); 3512 3513 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3514 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; 3515 3516 if (!desc->count || !desc->duration) 3517 continue; 3518 3519 data->count[i] = desc->count; 3520 data->desc[i].start = le32_to_cpu(desc->start_time); 3521 data->desc[i].duration = le32_to_cpu(desc->duration); 3522 data->desc[i].interval = le32_to_cpu(desc->interval); 3523 3524 if (data->count[i] > 1 && 3525 data->desc[i].interval < data->desc[i].duration) 3526 continue; 3527 3528 ieee80211_extend_noa_desc(data, tsf, i); 3529 ret++; 3530 } 3531 3532 if (ret) 3533 ieee80211_update_p2p_noa(data, tsf); 3534 3535 return ret; 3536 } 3537 EXPORT_SYMBOL(ieee80211_parse_p2p_noa); 3538 3539 void ieee80211_recalc_dtim(struct ieee80211_local *local, 3540 struct ieee80211_sub_if_data *sdata) 3541 { 3542 u64 tsf = drv_get_tsf(local, sdata); 3543 u64 dtim_count = 0; 3544 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; 3545 u8 dtim_period = sdata->vif.bss_conf.dtim_period; 3546 struct ps_data *ps; 3547 u8 bcns_from_dtim; 3548 3549 if (tsf == -1ULL || !beacon_int || !dtim_period) 3550 return; 3551 3552 if (sdata->vif.type == NL80211_IFTYPE_AP || 3553 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { 3554 if (!sdata->bss) 3555 return; 3556 3557 ps = &sdata->bss->ps; 3558 } else if (ieee80211_vif_is_mesh(&sdata->vif)) { 3559 ps = &sdata->u.mesh.ps; 3560 } else { 3561 return; 3562 } 3563 3564 /* 3565 * actually finds last dtim_count, mac80211 will update in 3566 * __beacon_add_tim(). 3567 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period 3568 */ 3569 do_div(tsf, beacon_int); 3570 bcns_from_dtim = do_div(tsf, dtim_period); 3571 /* just had a DTIM */ 3572 if (!bcns_from_dtim) 3573 dtim_count = 0; 3574 else 3575 dtim_count = dtim_period - bcns_from_dtim; 3576 3577 ps->dtim_count = dtim_count; 3578 } 3579 3580 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, 3581 struct ieee80211_chanctx *ctx) 3582 { 3583 struct ieee80211_sub_if_data *sdata; 3584 u8 radar_detect = 0; 3585 3586 lockdep_assert_held(&local->chanctx_mtx); 3587 3588 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) 3589 return 0; 3590 3591 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list) 3592 if (sdata->reserved_radar_required) 3593 radar_detect |= BIT(sdata->reserved_chandef.width); 3594 3595 /* 3596 * An in-place reservation context should not have any assigned vifs 3597 * until it replaces the other context. 3598 */ 3599 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER && 3600 !list_empty(&ctx->assigned_vifs)); 3601 3602 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list) 3603 if (sdata->radar_required) 3604 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width); 3605 3606 return radar_detect; 3607 } 3608 3609 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 3610 const struct cfg80211_chan_def *chandef, 3611 enum ieee80211_chanctx_mode chanmode, 3612 u8 radar_detect) 3613 { 3614 struct ieee80211_local *local = sdata->local; 3615 struct ieee80211_sub_if_data *sdata_iter; 3616 enum nl80211_iftype iftype = sdata->wdev.iftype; 3617 struct ieee80211_chanctx *ctx; 3618 int total = 1; 3619 struct iface_combination_params params = { 3620 .radar_detect = radar_detect, 3621 }; 3622 3623 lockdep_assert_held(&local->chanctx_mtx); 3624 3625 if (WARN_ON(hweight32(radar_detect) > 1)) 3626 return -EINVAL; 3627 3628 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && 3629 !chandef->chan)) 3630 return -EINVAL; 3631 3632 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) 3633 return -EINVAL; 3634 3635 if (sdata->vif.type == NL80211_IFTYPE_AP || 3636 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) { 3637 /* 3638 * always passing this is harmless, since it'll be the 3639 * same value that cfg80211 finds if it finds the same 3640 * interface ... and that's always allowed 3641 */ 3642 params.new_beacon_int = sdata->vif.bss_conf.beacon_int; 3643 } 3644 3645 /* Always allow software iftypes */ 3646 if (local->hw.wiphy->software_iftypes & BIT(iftype)) { 3647 if (radar_detect) 3648 return -EINVAL; 3649 return 0; 3650 } 3651 3652 if (chandef) 3653 params.num_different_channels = 1; 3654 3655 if (iftype != NL80211_IFTYPE_UNSPECIFIED) 3656 params.iftype_num[iftype] = 1; 3657 3658 list_for_each_entry(ctx, &local->chanctx_list, list) { 3659 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 3660 continue; 3661 params.radar_detect |= 3662 ieee80211_chanctx_radar_detect(local, ctx); 3663 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { 3664 params.num_different_channels++; 3665 continue; 3666 } 3667 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED && 3668 cfg80211_chandef_compatible(chandef, 3669 &ctx->conf.def)) 3670 continue; 3671 params.num_different_channels++; 3672 } 3673 3674 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) { 3675 struct wireless_dev *wdev_iter; 3676 3677 wdev_iter = &sdata_iter->wdev; 3678 3679 if (sdata_iter == sdata || 3680 !ieee80211_sdata_running(sdata_iter) || 3681 local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype)) 3682 continue; 3683 3684 params.iftype_num[wdev_iter->iftype]++; 3685 total++; 3686 } 3687 3688 if (total == 1 && !params.radar_detect) 3689 return 0; 3690 3691 return cfg80211_check_combinations(local->hw.wiphy, ¶ms); 3692 } 3693 3694 static void 3695 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, 3696 void *data) 3697 { 3698 u32 *max_num_different_channels = data; 3699 3700 *max_num_different_channels = max(*max_num_different_channels, 3701 c->num_different_channels); 3702 } 3703 3704 int ieee80211_max_num_channels(struct ieee80211_local *local) 3705 { 3706 struct ieee80211_sub_if_data *sdata; 3707 struct ieee80211_chanctx *ctx; 3708 u32 max_num_different_channels = 1; 3709 int err; 3710 struct iface_combination_params params = {0}; 3711 3712 lockdep_assert_held(&local->chanctx_mtx); 3713 3714 list_for_each_entry(ctx, &local->chanctx_list, list) { 3715 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 3716 continue; 3717 3718 params.num_different_channels++; 3719 3720 params.radar_detect |= 3721 ieee80211_chanctx_radar_detect(local, ctx); 3722 } 3723 3724 list_for_each_entry_rcu(sdata, &local->interfaces, list) 3725 params.iftype_num[sdata->wdev.iftype]++; 3726 3727 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms, 3728 ieee80211_iter_max_chans, 3729 &max_num_different_channels); 3730 if (err < 0) 3731 return err; 3732 3733 return max_num_different_channels; 3734 } 3735 3736 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) 3737 { 3738 *buf++ = WLAN_EID_VENDOR_SPECIFIC; 3739 *buf++ = 7; /* len */ 3740 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ 3741 *buf++ = 0x50; 3742 *buf++ = 0xf2; 3743 *buf++ = 2; /* WME */ 3744 *buf++ = 0; /* WME info */ 3745 *buf++ = 1; /* WME ver */ 3746 *buf++ = qosinfo; /* U-APSD no in use */ 3747 3748 return buf; 3749 } 3750 3751 void ieee80211_txq_get_depth(struct ieee80211_txq *txq, 3752 unsigned long *frame_cnt, 3753 unsigned long *byte_cnt) 3754 { 3755 struct txq_info *txqi = to_txq_info(txq); 3756 u32 frag_cnt = 0, frag_bytes = 0; 3757 struct sk_buff *skb; 3758 3759 skb_queue_walk(&txqi->frags, skb) { 3760 frag_cnt++; 3761 frag_bytes += skb->len; 3762 } 3763 3764 if (frame_cnt) 3765 *frame_cnt = txqi->tin.backlog_packets + frag_cnt; 3766 3767 if (byte_cnt) 3768 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes; 3769 } 3770 EXPORT_SYMBOL(ieee80211_txq_get_depth); 3771 3772 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = { 3773 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO, 3774 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI, 3775 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE, 3776 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK 3777 }; 3778