1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright 2002-2005, Instant802 Networks, Inc. 4 * Copyright 2005-2006, Devicescape Software, Inc. 5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 6 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> 7 * Copyright 2013-2014 Intel Mobile Communications GmbH 8 * Copyright (C) 2015-2017 Intel Deutschland GmbH 9 * Copyright (C) 2018-2026 Intel Corporation 10 * 11 * utilities for mac80211 12 */ 13 14 #include <net/mac80211.h> 15 #include <linux/netdevice.h> 16 #include <linux/export.h> 17 #include <linux/types.h> 18 #include <linux/slab.h> 19 #include <linux/skbuff.h> 20 #include <linux/etherdevice.h> 21 #include <linux/if_arp.h> 22 #include <linux/bitmap.h> 23 #include <linux/crc32.h> 24 #include <net/net_namespace.h> 25 #include <net/cfg80211.h> 26 #include <net/rtnetlink.h> 27 #include <kunit/visibility.h> 28 29 #include "ieee80211_i.h" 30 #include "driver-ops.h" 31 #include "rate.h" 32 #include "mesh.h" 33 #include "wme.h" 34 #include "led.h" 35 #include "wep.h" 36 37 /* privid for wiphys to determine whether they belong to us or not */ 38 const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid; 39 40 struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) 41 { 42 struct ieee80211_local *local; 43 44 local = wiphy_priv(wiphy); 45 return &local->hw; 46 } 47 EXPORT_SYMBOL(wiphy_to_ieee80211_hw); 48 49 const struct ieee80211_conn_settings ieee80211_conn_settings_unlimited = { 50 .mode = IEEE80211_CONN_MODE_EHT, 51 .bw_limit = IEEE80211_CONN_BW_LIMIT_320, 52 }; 53 54 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 55 enum nl80211_iftype type) 56 { 57 __le16 fc = hdr->frame_control; 58 59 if (ieee80211_is_data(fc)) { 60 if (len < 24) /* drop incorrect hdr len (data) */ 61 return NULL; 62 63 if (ieee80211_has_a4(fc)) 64 return NULL; 65 if (ieee80211_has_tods(fc)) 66 return hdr->addr1; 67 if (ieee80211_has_fromds(fc)) 68 return hdr->addr2; 69 70 return hdr->addr3; 71 } 72 73 if (ieee80211_is_s1g_beacon(fc)) { 74 struct ieee80211_ext *ext = (void *) hdr; 75 76 if (len < offsetofend(struct ieee80211_ext, u.s1g_beacon.sa)) 77 return NULL; 78 79 return ext->u.s1g_beacon.sa; 80 } 81 82 if (ieee80211_is_mgmt(fc)) { 83 if (len < 24) /* drop incorrect hdr len (mgmt) */ 84 return NULL; 85 return hdr->addr3; 86 } 87 88 if (ieee80211_is_ctl(fc)) { 89 if (ieee80211_is_pspoll(fc)) 90 return hdr->addr1; 91 92 if (ieee80211_is_back_req(fc)) { 93 switch (type) { 94 case NL80211_IFTYPE_STATION: 95 return hdr->addr2; 96 case NL80211_IFTYPE_AP: 97 case NL80211_IFTYPE_AP_VLAN: 98 return hdr->addr1; 99 default: 100 break; /* fall through to the return */ 101 } 102 } 103 } 104 105 return NULL; 106 } 107 108 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) 109 { 110 struct sk_buff *skb; 111 struct ieee80211_hdr *hdr; 112 113 skb_queue_walk(&tx->skbs, skb) { 114 hdr = (struct ieee80211_hdr *) skb->data; 115 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 116 } 117 } 118 119 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 120 int rate, int erp, int short_preamble) 121 { 122 int dur; 123 124 /* calculate duration (in microseconds, rounded up to next higher 125 * integer if it includes a fractional microsecond) to send frame of 126 * len bytes (does not include FCS) at the given rate. Duration will 127 * also include SIFS. 128 * 129 * rate is in 100 kbps, so divident is multiplied by 10 in the 130 * DIV_ROUND_UP() operations. 131 */ 132 133 if (band == NL80211_BAND_5GHZ || erp) { 134 /* 135 * OFDM: 136 * 137 * N_DBPS = DATARATE x 4 138 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) 139 * (16 = SIGNAL time, 6 = tail bits) 140 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext 141 * 142 * T_SYM = 4 usec 143 * 802.11a - 18.5.2: aSIFSTime = 16 usec 144 * 802.11g - 19.8.4: aSIFSTime = 10 usec + 145 * signal ext = 6 usec 146 */ 147 dur = 16; /* SIFS + signal ext */ 148 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ 149 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ 150 151 /* rates should already consider the channel bandwidth, 152 * don't apply divisor again. 153 */ 154 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, 155 4 * rate); /* T_SYM x N_SYM */ 156 } else { 157 /* 158 * 802.11b or 802.11g with 802.11b compatibility: 159 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + 160 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. 161 * 162 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 163 * aSIFSTime = 10 usec 164 * aPreambleLength = 144 usec or 72 usec with short preamble 165 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble 166 */ 167 dur = 10; /* aSIFSTime = 10 usec */ 168 dur += short_preamble ? (72 + 24) : (144 + 48); 169 170 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); 171 } 172 173 return dur; 174 } 175 176 /* Exported duration function for driver use */ 177 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, 178 struct ieee80211_vif *vif, 179 enum nl80211_band band, 180 size_t frame_len, 181 struct ieee80211_rate *rate) 182 { 183 struct ieee80211_sub_if_data *sdata; 184 u16 dur; 185 int erp; 186 bool short_preamble = false; 187 188 erp = 0; 189 if (vif) { 190 sdata = vif_to_sdata(vif); 191 short_preamble = sdata->vif.bss_conf.use_short_preamble; 192 if (sdata->deflink.operating_11g_mode) 193 erp = rate->flags & IEEE80211_RATE_ERP_G; 194 } 195 196 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, 197 short_preamble); 198 199 return cpu_to_le16(dur); 200 } 201 EXPORT_SYMBOL(ieee80211_generic_frame_duration); 202 203 __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, 204 struct ieee80211_vif *vif, size_t frame_len, 205 const struct ieee80211_tx_info *frame_txctl) 206 { 207 struct ieee80211_local *local = hw_to_local(hw); 208 struct ieee80211_rate *rate; 209 struct ieee80211_sub_if_data *sdata; 210 bool short_preamble; 211 int erp, bitrate; 212 u16 dur; 213 struct ieee80211_supported_band *sband; 214 215 sband = local->hw.wiphy->bands[frame_txctl->band]; 216 217 short_preamble = false; 218 219 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 220 221 erp = 0; 222 if (vif) { 223 sdata = vif_to_sdata(vif); 224 short_preamble = sdata->vif.bss_conf.use_short_preamble; 225 if (sdata->deflink.operating_11g_mode) 226 erp = rate->flags & IEEE80211_RATE_ERP_G; 227 } 228 229 bitrate = rate->bitrate; 230 231 /* CTS duration */ 232 dur = ieee80211_frame_duration(sband->band, 10, bitrate, 233 erp, short_preamble); 234 /* Data frame duration */ 235 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, 236 erp, short_preamble); 237 /* ACK duration */ 238 dur += ieee80211_frame_duration(sband->band, 10, bitrate, 239 erp, short_preamble); 240 241 return cpu_to_le16(dur); 242 } 243 EXPORT_SYMBOL(ieee80211_rts_duration); 244 245 __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, 246 struct ieee80211_vif *vif, 247 size_t frame_len, 248 const struct ieee80211_tx_info *frame_txctl) 249 { 250 struct ieee80211_local *local = hw_to_local(hw); 251 struct ieee80211_rate *rate; 252 struct ieee80211_sub_if_data *sdata; 253 bool short_preamble; 254 int erp, bitrate; 255 u16 dur; 256 struct ieee80211_supported_band *sband; 257 258 sband = local->hw.wiphy->bands[frame_txctl->band]; 259 260 short_preamble = false; 261 262 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 263 erp = 0; 264 if (vif) { 265 sdata = vif_to_sdata(vif); 266 short_preamble = sdata->vif.bss_conf.use_short_preamble; 267 if (sdata->deflink.operating_11g_mode) 268 erp = rate->flags & IEEE80211_RATE_ERP_G; 269 } 270 271 bitrate = rate->bitrate; 272 273 /* Data frame duration */ 274 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, 275 erp, short_preamble); 276 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { 277 /* ACK duration */ 278 dur += ieee80211_frame_duration(sband->band, 10, bitrate, 279 erp, short_preamble); 280 } 281 282 return cpu_to_le16(dur); 283 } 284 EXPORT_SYMBOL(ieee80211_ctstoself_duration); 285 286 static void wake_tx_push_queue(struct ieee80211_local *local, 287 struct ieee80211_sub_if_data *sdata, 288 struct ieee80211_txq *queue) 289 { 290 struct ieee80211_tx_control control = { 291 .sta = queue->sta, 292 }; 293 struct sk_buff *skb; 294 295 while (1) { 296 skb = ieee80211_tx_dequeue(&local->hw, queue); 297 if (!skb) 298 break; 299 300 drv_tx(local, &control, skb); 301 } 302 } 303 304 /* wake_tx_queue handler for driver not implementing a custom one*/ 305 void ieee80211_handle_wake_tx_queue(struct ieee80211_hw *hw, 306 struct ieee80211_txq *txq) 307 { 308 struct ieee80211_local *local = hw_to_local(hw); 309 struct ieee80211_sub_if_data *sdata = vif_to_sdata(txq->vif); 310 struct ieee80211_txq *queue; 311 312 spin_lock(&local->handle_wake_tx_queue_lock); 313 314 /* Use ieee80211_next_txq() for airtime fairness accounting */ 315 ieee80211_txq_schedule_start(hw, txq->ac); 316 while ((queue = ieee80211_next_txq(hw, txq->ac))) { 317 wake_tx_push_queue(local, sdata, queue); 318 ieee80211_return_txq(hw, queue, false); 319 } 320 ieee80211_txq_schedule_end(hw, txq->ac); 321 spin_unlock(&local->handle_wake_tx_queue_lock); 322 } 323 EXPORT_SYMBOL(ieee80211_handle_wake_tx_queue); 324 325 static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac) 326 { 327 struct ieee80211_local *local = sdata->local; 328 struct ieee80211_vif *vif = &sdata->vif; 329 struct fq *fq = &local->fq; 330 struct ps_data *ps = NULL; 331 struct txq_info *txqi = NULL; 332 struct sta_info *sta; 333 int i; 334 335 local_bh_disable(); 336 spin_lock(&fq->lock); 337 338 if (!test_bit(SDATA_STATE_RUNNING, &sdata->state)) 339 goto out; 340 341 if (sdata->vif.type == NL80211_IFTYPE_AP) 342 ps = &sdata->bss->ps; 343 344 list_for_each_entry_rcu(sta, &local->sta_list, list) { 345 if (sdata != sta->sdata) 346 continue; 347 348 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { 349 struct ieee80211_txq *txq = sta->sta.txq[i]; 350 struct txq_info *sta_txqi; 351 352 if (!txq) 353 continue; 354 355 sta_txqi = to_txq_info(txq); 356 357 if (ac != txq->ac) 358 continue; 359 360 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, 361 &sta_txqi->flags)) 362 continue; 363 364 spin_unlock(&fq->lock); 365 drv_wake_tx_queue(local, sta_txqi); 366 spin_lock(&fq->lock); 367 } 368 } 369 370 if (vif->txq) { 371 txqi = to_txq_info(vif->txq); 372 373 /* txq and txq_mgmt are mutually exclusive */ 374 WARN_ON_ONCE(vif->txq_mgmt); 375 376 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) || 377 (ps && atomic_read(&ps->num_sta_ps)) || 378 ac != vif->txq->ac) 379 txqi = NULL; 380 } else if (vif->txq_mgmt) { 381 txqi = to_txq_info(vif->txq_mgmt); 382 383 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) || 384 ac != vif->txq_mgmt->ac) 385 txqi = NULL; 386 } 387 388 spin_unlock(&fq->lock); 389 390 if (txqi) 391 drv_wake_tx_queue(local, txqi); 392 393 local_bh_enable(); 394 return; 395 out: 396 spin_unlock(&fq->lock); 397 local_bh_enable(); 398 } 399 400 static void 401 __releases(&local->queue_stop_reason_lock) 402 __acquires(&local->queue_stop_reason_lock) 403 _ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags) 404 { 405 struct ieee80211_sub_if_data *sdata; 406 int n_acs = IEEE80211_NUM_ACS; 407 int i; 408 409 rcu_read_lock(); 410 411 if (local->hw.queues < IEEE80211_NUM_ACS) 412 n_acs = 1; 413 414 for (i = 0; i < local->hw.queues; i++) { 415 if (local->queue_stop_reasons[i]) 416 continue; 417 418 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags); 419 list_for_each_entry_rcu(sdata, &local->interfaces, list) { 420 int ac; 421 422 for (ac = 0; ac < n_acs; ac++) { 423 int ac_queue = sdata->vif.hw_queue[ac]; 424 425 if (ac_queue == i || 426 sdata->vif.cab_queue == i) 427 __ieee80211_wake_txqs(sdata, ac); 428 } 429 } 430 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags); 431 } 432 433 rcu_read_unlock(); 434 } 435 436 void ieee80211_wake_txqs(struct tasklet_struct *t) 437 { 438 struct ieee80211_local *local = from_tasklet(local, t, 439 wake_txqs_tasklet); 440 unsigned long flags; 441 442 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 443 _ieee80211_wake_txqs(local, &flags); 444 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 445 } 446 447 static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, 448 enum queue_stop_reason reason, 449 bool refcounted, 450 unsigned long *flags) 451 { 452 struct ieee80211_local *local = hw_to_local(hw); 453 454 if (WARN_ON(queue >= hw->queues)) 455 return; 456 457 if (!test_bit(reason, &local->queue_stop_reasons[queue])) 458 return; 459 460 if (!refcounted) { 461 local->q_stop_reasons[queue][reason] = 0; 462 } else { 463 local->q_stop_reasons[queue][reason]--; 464 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0)) 465 local->q_stop_reasons[queue][reason] = 0; 466 } 467 468 if (local->q_stop_reasons[queue][reason] == 0) 469 __clear_bit(reason, &local->queue_stop_reasons[queue]); 470 471 trace_wake_queue(local, queue, reason, 472 local->q_stop_reasons[queue][reason]); 473 474 if (local->queue_stop_reasons[queue] != 0) 475 /* someone still has this queue stopped */ 476 return; 477 478 if (!skb_queue_empty(&local->pending[queue])) 479 tasklet_schedule(&local->tx_pending_tasklet); 480 481 /* 482 * Calling _ieee80211_wake_txqs here can be a problem because it may 483 * release queue_stop_reason_lock which has been taken by 484 * __ieee80211_wake_queue's caller. It is certainly not very nice to 485 * release someone's lock, but it is fine because all the callers of 486 * __ieee80211_wake_queue call it right before releasing the lock. 487 */ 488 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER) 489 tasklet_schedule(&local->wake_txqs_tasklet); 490 else 491 _ieee80211_wake_txqs(local, flags); 492 } 493 494 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 495 enum queue_stop_reason reason, 496 bool refcounted) 497 { 498 struct ieee80211_local *local = hw_to_local(hw); 499 unsigned long flags; 500 501 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 502 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags); 503 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 504 } 505 506 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) 507 { 508 ieee80211_wake_queue_by_reason(hw, queue, 509 IEEE80211_QUEUE_STOP_REASON_DRIVER, 510 false); 511 } 512 EXPORT_SYMBOL(ieee80211_wake_queue); 513 514 static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, 515 enum queue_stop_reason reason, 516 bool refcounted) 517 { 518 struct ieee80211_local *local = hw_to_local(hw); 519 520 if (WARN_ON(queue >= hw->queues)) 521 return; 522 523 if (!refcounted) 524 local->q_stop_reasons[queue][reason] = 1; 525 else 526 local->q_stop_reasons[queue][reason]++; 527 528 trace_stop_queue(local, queue, reason, 529 local->q_stop_reasons[queue][reason]); 530 531 set_bit(reason, &local->queue_stop_reasons[queue]); 532 } 533 534 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 535 enum queue_stop_reason reason, 536 bool refcounted) 537 { 538 struct ieee80211_local *local = hw_to_local(hw); 539 unsigned long flags; 540 541 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 542 __ieee80211_stop_queue(hw, queue, reason, refcounted); 543 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 544 } 545 546 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) 547 { 548 ieee80211_stop_queue_by_reason(hw, queue, 549 IEEE80211_QUEUE_STOP_REASON_DRIVER, 550 false); 551 } 552 EXPORT_SYMBOL(ieee80211_stop_queue); 553 554 void ieee80211_add_pending_skb(struct ieee80211_local *local, 555 struct sk_buff *skb) 556 { 557 struct ieee80211_hw *hw = &local->hw; 558 unsigned long flags; 559 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 560 int queue = info->hw_queue; 561 562 if (WARN_ON(!info->control.vif)) { 563 ieee80211_free_txskb(&local->hw, skb); 564 return; 565 } 566 567 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 568 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 569 false); 570 __skb_queue_tail(&local->pending[queue], skb); 571 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 572 false, &flags); 573 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 574 } 575 576 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 577 struct sk_buff_head *skbs) 578 { 579 struct ieee80211_hw *hw = &local->hw; 580 struct sk_buff *skb; 581 unsigned long flags; 582 int queue, i; 583 584 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 585 while ((skb = skb_dequeue(skbs))) { 586 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 587 588 if (WARN_ON(!info->control.vif)) { 589 ieee80211_free_txskb(&local->hw, skb); 590 continue; 591 } 592 593 queue = info->hw_queue; 594 595 __ieee80211_stop_queue(hw, queue, 596 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 597 false); 598 599 __skb_queue_tail(&local->pending[queue], skb); 600 } 601 602 for (i = 0; i < hw->queues; i++) 603 __ieee80211_wake_queue(hw, i, 604 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 605 false, &flags); 606 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 607 } 608 609 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 610 unsigned long queues, 611 enum queue_stop_reason reason, 612 bool refcounted) 613 { 614 struct ieee80211_local *local = hw_to_local(hw); 615 unsigned long flags; 616 int i; 617 618 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 619 620 for_each_set_bit(i, &queues, hw->queues) 621 __ieee80211_stop_queue(hw, i, reason, refcounted); 622 623 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 624 } 625 626 void ieee80211_stop_queues(struct ieee80211_hw *hw) 627 { 628 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 629 IEEE80211_QUEUE_STOP_REASON_DRIVER, 630 false); 631 } 632 EXPORT_SYMBOL(ieee80211_stop_queues); 633 634 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) 635 { 636 struct ieee80211_local *local = hw_to_local(hw); 637 unsigned long flags; 638 int ret; 639 640 if (WARN_ON(queue >= hw->queues)) 641 return true; 642 643 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 644 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, 645 &local->queue_stop_reasons[queue]); 646 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 647 return ret; 648 } 649 EXPORT_SYMBOL(ieee80211_queue_stopped); 650 651 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 652 unsigned long queues, 653 enum queue_stop_reason reason, 654 bool refcounted) 655 { 656 struct ieee80211_local *local = hw_to_local(hw); 657 unsigned long flags; 658 int i; 659 660 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 661 662 for_each_set_bit(i, &queues, hw->queues) 663 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags); 664 665 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 666 } 667 668 void ieee80211_wake_queues(struct ieee80211_hw *hw) 669 { 670 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 671 IEEE80211_QUEUE_STOP_REASON_DRIVER, 672 false); 673 } 674 EXPORT_SYMBOL(ieee80211_wake_queues); 675 676 unsigned int 677 ieee80211_get_vif_queues(struct ieee80211_local *local, 678 struct ieee80211_sub_if_data *sdata) 679 { 680 unsigned int queues; 681 682 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) { 683 int ac; 684 685 queues = 0; 686 687 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 688 if (sdata->vif.hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 689 queues |= BIT(sdata->vif.hw_queue[ac]); 690 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) 691 queues |= BIT(sdata->vif.cab_queue); 692 } else { 693 /* all queues */ 694 queues = BIT(local->hw.queues) - 1; 695 } 696 697 return queues; 698 } 699 700 void __ieee80211_flush_queues(struct ieee80211_local *local, 701 struct ieee80211_sub_if_data *sdata, 702 unsigned int queues, bool drop) 703 { 704 if (!local->ops->flush && !drop) 705 return; 706 707 /* 708 * If no queue was set, or if the HW doesn't support 709 * IEEE80211_HW_QUEUE_CONTROL - flush all queues 710 */ 711 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) 712 queues = ieee80211_get_vif_queues(local, sdata); 713 714 ieee80211_stop_queues_by_reason(&local->hw, queues, 715 IEEE80211_QUEUE_STOP_REASON_FLUSH, 716 false); 717 718 if (drop) { 719 struct sta_info *sta; 720 721 /* Purge the queues, so the frames on them won't be 722 * sent during __ieee80211_wake_queue() 723 */ 724 list_for_each_entry(sta, &local->sta_list, list) { 725 if (sdata != sta->sdata) 726 continue; 727 ieee80211_purge_sta_txqs(sta); 728 } 729 } 730 731 if (local->ops->flush) 732 drv_flush(local, sdata, queues, drop); 733 734 ieee80211_wake_queues_by_reason(&local->hw, queues, 735 IEEE80211_QUEUE_STOP_REASON_FLUSH, 736 false); 737 } 738 739 void ieee80211_flush_queues(struct ieee80211_local *local, 740 struct ieee80211_sub_if_data *sdata, bool drop) 741 { 742 __ieee80211_flush_queues(local, sdata, 0, drop); 743 } 744 745 static void __iterate_interfaces(struct ieee80211_local *local, 746 u32 iter_flags, 747 void (*iterator)(void *data, u8 *mac, 748 struct ieee80211_vif *vif), 749 void *data) 750 { 751 struct ieee80211_sub_if_data *sdata; 752 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; 753 754 list_for_each_entry_rcu(sdata, &local->interfaces, list, 755 lockdep_is_held(&local->iflist_mtx) || 756 lockdep_is_held(&local->hw.wiphy->mtx)) { 757 switch (sdata->vif.type) { 758 case NL80211_IFTYPE_MONITOR: 759 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) && 760 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 761 continue; 762 break; 763 case NL80211_IFTYPE_AP_VLAN: 764 continue; 765 default: 766 break; 767 } 768 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && 769 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 770 continue; 771 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) && 772 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 773 continue; 774 if (ieee80211_sdata_running(sdata) || !active_only) 775 iterator(data, sdata->vif.addr, 776 &sdata->vif); 777 } 778 779 sdata = rcu_dereference_check(local->monitor_sdata, 780 lockdep_is_held(&local->iflist_mtx) || 781 lockdep_is_held(&local->hw.wiphy->mtx)); 782 if (sdata && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) && 783 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || 784 sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 785 iterator(data, sdata->vif.addr, &sdata->vif); 786 } 787 788 void ieee80211_iterate_interfaces( 789 struct ieee80211_hw *hw, u32 iter_flags, 790 void (*iterator)(void *data, u8 *mac, 791 struct ieee80211_vif *vif), 792 void *data) 793 { 794 struct ieee80211_local *local = hw_to_local(hw); 795 796 mutex_lock(&local->iflist_mtx); 797 __iterate_interfaces(local, iter_flags, iterator, data); 798 mutex_unlock(&local->iflist_mtx); 799 } 800 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces); 801 802 void ieee80211_iterate_active_interfaces_atomic( 803 struct ieee80211_hw *hw, u32 iter_flags, 804 void (*iterator)(void *data, u8 *mac, 805 struct ieee80211_vif *vif), 806 void *data) 807 { 808 struct ieee80211_local *local = hw_to_local(hw); 809 810 rcu_read_lock(); 811 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 812 iterator, data); 813 rcu_read_unlock(); 814 } 815 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); 816 817 struct ieee80211_vif * 818 __ieee80211_iterate_interfaces(struct ieee80211_hw *hw, 819 struct ieee80211_vif *prev, 820 u32 iter_flags) 821 { 822 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; 823 struct ieee80211_sub_if_data *sdata = NULL, *monitor; 824 struct ieee80211_local *local = hw_to_local(hw); 825 826 lockdep_assert_wiphy(hw->wiphy); 827 828 if (prev) 829 sdata = vif_to_sdata(prev); 830 831 monitor = rcu_dereference_check(local->monitor_sdata, 832 lockdep_is_held(&hw->wiphy->mtx)); 833 if (monitor && monitor == sdata) 834 return NULL; 835 836 sdata = list_prepare_entry(sdata, &local->interfaces, list); 837 list_for_each_entry_continue(sdata, &local->interfaces, list) { 838 switch (sdata->vif.type) { 839 case NL80211_IFTYPE_MONITOR: 840 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) && 841 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 842 continue; 843 break; 844 case NL80211_IFTYPE_AP_VLAN: 845 continue; 846 default: 847 break; 848 } 849 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && 850 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 851 continue; 852 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) && 853 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 854 continue; 855 if (ieee80211_sdata_running(sdata) || !active_only) 856 return &sdata->vif; 857 } 858 859 if (monitor && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) && 860 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || 861 monitor->flags & IEEE80211_SDATA_IN_DRIVER)) 862 return &monitor->vif; 863 864 return NULL; 865 } 866 EXPORT_SYMBOL_GPL(__ieee80211_iterate_interfaces); 867 868 static void __iterate_stations(struct ieee80211_local *local, 869 void (*iterator)(void *data, 870 struct ieee80211_sta *sta), 871 void *data) 872 { 873 struct sta_info *sta; 874 875 list_for_each_entry_rcu(sta, &local->sta_list, list, 876 lockdep_is_held(&local->hw.wiphy->mtx)) { 877 if (!sta->uploaded) 878 continue; 879 880 iterator(data, &sta->sta); 881 } 882 } 883 884 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, 885 void (*iterator)(void *data, 886 struct ieee80211_sta *sta), 887 void *data) 888 { 889 struct ieee80211_local *local = hw_to_local(hw); 890 891 rcu_read_lock(); 892 __iterate_stations(local, iterator, data); 893 rcu_read_unlock(); 894 } 895 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic); 896 897 struct ieee80211_sta * 898 __ieee80211_iterate_stations(struct ieee80211_hw *hw, 899 struct ieee80211_sta *prev) 900 { 901 struct ieee80211_local *local = hw_to_local(hw); 902 struct sta_info *sta = NULL; 903 904 lockdep_assert_wiphy(local->hw.wiphy); 905 906 if (prev) 907 sta = container_of(prev, struct sta_info, sta); 908 909 sta = list_prepare_entry(sta, &local->sta_list, list); 910 list_for_each_entry_continue(sta, &local->sta_list, list) { 911 if (!sta->uploaded) 912 continue; 913 914 return &sta->sta; 915 } 916 917 return NULL; 918 } 919 EXPORT_SYMBOL_GPL(__ieee80211_iterate_stations); 920 921 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) 922 { 923 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 924 925 if (!ieee80211_sdata_running(sdata) || 926 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 927 return NULL; 928 return &sdata->vif; 929 } 930 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); 931 932 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif) 933 { 934 if (!vif) 935 return NULL; 936 937 return &vif_to_sdata(vif)->wdev; 938 } 939 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev); 940 941 /* 942 * Nothing should have been stuffed into the workqueue during 943 * the suspend->resume cycle. Since we can't check each caller 944 * of this function if we are already quiescing / suspended, 945 * check here and don't WARN since this can actually happen when 946 * the rx path (for example) is racing against __ieee80211_suspend 947 * and suspending / quiescing was set after the rx path checked 948 * them. 949 */ 950 static bool ieee80211_can_queue_work(struct ieee80211_local *local) 951 { 952 if (local->quiescing || (local->suspended && !local->resuming)) { 953 pr_warn("queueing ieee80211 work while going to suspend\n"); 954 return false; 955 } 956 957 return true; 958 } 959 960 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) 961 { 962 struct ieee80211_local *local = hw_to_local(hw); 963 964 if (!ieee80211_can_queue_work(local)) 965 return; 966 967 queue_work(local->workqueue, work); 968 } 969 EXPORT_SYMBOL(ieee80211_queue_work); 970 971 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, 972 struct delayed_work *dwork, 973 unsigned long delay) 974 { 975 struct ieee80211_local *local = hw_to_local(hw); 976 977 if (!ieee80211_can_queue_work(local)) 978 return; 979 980 queue_delayed_work(local->workqueue, dwork, delay); 981 } 982 EXPORT_SYMBOL(ieee80211_queue_delayed_work); 983 984 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 985 struct ieee80211_tx_queue_params 986 *qparam, int ac) 987 { 988 struct ieee80211_chanctx_conf *chanctx_conf; 989 const struct ieee80211_reg_rule *rrule; 990 const struct ieee80211_wmm_ac *wmm_ac; 991 u16 center_freq = 0; 992 993 if (sdata->vif.type != NL80211_IFTYPE_AP && 994 sdata->vif.type != NL80211_IFTYPE_STATION) 995 return; 996 997 rcu_read_lock(); 998 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 999 if (chanctx_conf) 1000 center_freq = chanctx_conf->def.chan->center_freq; 1001 1002 if (!center_freq) { 1003 rcu_read_unlock(); 1004 return; 1005 } 1006 1007 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq)); 1008 1009 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) { 1010 rcu_read_unlock(); 1011 return; 1012 } 1013 1014 if (sdata->vif.type == NL80211_IFTYPE_AP) 1015 wmm_ac = &rrule->wmm_rule.ap[ac]; 1016 else 1017 wmm_ac = &rrule->wmm_rule.client[ac]; 1018 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min); 1019 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max); 1020 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn); 1021 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32); 1022 rcu_read_unlock(); 1023 } 1024 1025 void ieee80211_set_wmm_default(struct ieee80211_link_data *link, 1026 bool bss_notify, bool enable_qos) 1027 { 1028 struct ieee80211_sub_if_data *sdata = link->sdata; 1029 struct ieee80211_local *local = sdata->local; 1030 struct ieee80211_tx_queue_params qparam; 1031 struct ieee80211_chanctx_conf *chanctx_conf; 1032 int ac; 1033 bool use_11b; 1034 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ 1035 int aCWmin, aCWmax; 1036 1037 if (!local->ops->conf_tx) 1038 return; 1039 1040 if (local->hw.queues < IEEE80211_NUM_ACS) 1041 return; 1042 1043 memset(&qparam, 0, sizeof(qparam)); 1044 1045 rcu_read_lock(); 1046 chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 1047 use_11b = (chanctx_conf && 1048 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) && 1049 !link->operating_11g_mode; 1050 rcu_read_unlock(); 1051 1052 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); 1053 1054 /* Set defaults according to 802.11-2007 Table 7-37 */ 1055 aCWmax = 1023; 1056 if (use_11b) 1057 aCWmin = 31; 1058 else 1059 aCWmin = 15; 1060 1061 /* Configure old 802.11b/g medium access rules. */ 1062 qparam.cw_max = aCWmax; 1063 qparam.cw_min = aCWmin; 1064 qparam.txop = 0; 1065 qparam.aifs = 2; 1066 1067 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 1068 /* Update if QoS is enabled. */ 1069 if (enable_qos) { 1070 switch (ac) { 1071 case IEEE80211_AC_BK: 1072 qparam.cw_max = aCWmax; 1073 qparam.cw_min = aCWmin; 1074 qparam.txop = 0; 1075 if (is_ocb) 1076 qparam.aifs = 9; 1077 else 1078 qparam.aifs = 7; 1079 break; 1080 /* never happens but let's not leave undefined */ 1081 default: 1082 case IEEE80211_AC_BE: 1083 qparam.cw_max = aCWmax; 1084 qparam.cw_min = aCWmin; 1085 qparam.txop = 0; 1086 if (is_ocb) 1087 qparam.aifs = 6; 1088 else 1089 qparam.aifs = 3; 1090 break; 1091 case IEEE80211_AC_VI: 1092 qparam.cw_max = aCWmin; 1093 qparam.cw_min = (aCWmin + 1) / 2 - 1; 1094 if (is_ocb) 1095 qparam.txop = 0; 1096 else if (use_11b) 1097 qparam.txop = 6016/32; 1098 else 1099 qparam.txop = 3008/32; 1100 1101 if (is_ocb) 1102 qparam.aifs = 3; 1103 else 1104 qparam.aifs = 2; 1105 break; 1106 case IEEE80211_AC_VO: 1107 qparam.cw_max = (aCWmin + 1) / 2 - 1; 1108 qparam.cw_min = (aCWmin + 1) / 4 - 1; 1109 if (is_ocb) 1110 qparam.txop = 0; 1111 else if (use_11b) 1112 qparam.txop = 3264/32; 1113 else 1114 qparam.txop = 1504/32; 1115 qparam.aifs = 2; 1116 break; 1117 } 1118 } 1119 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac); 1120 1121 qparam.uapsd = false; 1122 1123 link->tx_conf[ac] = qparam; 1124 drv_conf_tx(local, link, ac, &qparam); 1125 } 1126 1127 if (sdata->vif.type != NL80211_IFTYPE_MONITOR && 1128 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 1129 sdata->vif.type != NL80211_IFTYPE_NAN) { 1130 link->conf->qos = enable_qos; 1131 if (bss_notify) 1132 ieee80211_link_info_change_notify(sdata, link, 1133 BSS_CHANGED_QOS); 1134 } 1135 } 1136 1137 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1138 u16 transaction, u16 auth_alg, u16 status, 1139 const u8 *extra, size_t extra_len, const u8 *da, 1140 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, 1141 u32 tx_flags) 1142 { 1143 struct ieee80211_local *local = sdata->local; 1144 struct sk_buff *skb; 1145 struct ieee80211_mgmt *mgmt; 1146 bool multi_link = ieee80211_vif_is_mld(&sdata->vif); 1147 struct { 1148 u8 id; 1149 u8 len; 1150 u8 ext_id; 1151 struct ieee80211_multi_link_elem ml; 1152 struct ieee80211_mle_basic_common_info basic; 1153 } __packed mle = { 1154 .id = WLAN_EID_EXTENSION, 1155 .len = sizeof(mle) - 2, 1156 .ext_id = WLAN_EID_EXT_EHT_MULTI_LINK, 1157 .ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC), 1158 .basic.len = sizeof(mle.basic), 1159 }; 1160 bool add_mle; 1161 int err; 1162 1163 add_mle = (multi_link && 1164 !cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_MULTI_LINK, 1165 extra, extra_len)); 1166 1167 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ 1168 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + 1169 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN + 1170 add_mle * sizeof(mle)); 1171 if (!skb) 1172 return; 1173 1174 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); 1175 1176 mgmt = skb_put_zero(skb, 24 + 6); 1177 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 1178 IEEE80211_STYPE_AUTH); 1179 memcpy(mgmt->da, da, ETH_ALEN); 1180 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 1181 memcpy(mgmt->bssid, bssid, ETH_ALEN); 1182 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); 1183 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); 1184 mgmt->u.auth.status_code = cpu_to_le16(status); 1185 if (extra) 1186 skb_put_data(skb, extra, extra_len); 1187 1188 if (add_mle) { 1189 memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN); 1190 skb_put_data(skb, &mle, sizeof(mle)); 1191 } 1192 1193 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { 1194 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 1195 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); 1196 if (WARN_ON(err)) { 1197 kfree_skb(skb); 1198 return; 1199 } 1200 } 1201 1202 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | 1203 tx_flags; 1204 ieee80211_tx_skb(sdata, skb); 1205 } 1206 1207 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1208 const u8 *da, const u8 *bssid, 1209 u16 stype, u16 reason, 1210 bool send_frame, u8 *frame_buf) 1211 { 1212 struct ieee80211_local *local = sdata->local; 1213 struct sk_buff *skb; 1214 struct ieee80211_mgmt *mgmt = (void *)frame_buf; 1215 1216 /* build frame */ 1217 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); 1218 mgmt->duration = 0; /* initialize only */ 1219 mgmt->seq_ctrl = 0; /* initialize only */ 1220 memcpy(mgmt->da, da, ETH_ALEN); 1221 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 1222 memcpy(mgmt->bssid, bssid, ETH_ALEN); 1223 /* u.deauth.reason_code == u.disassoc.reason_code */ 1224 mgmt->u.deauth.reason_code = cpu_to_le16(reason); 1225 1226 if (send_frame) { 1227 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 1228 IEEE80211_DEAUTH_FRAME_LEN); 1229 if (!skb) 1230 return; 1231 1232 skb_reserve(skb, local->hw.extra_tx_headroom); 1233 1234 /* copy in frame */ 1235 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN); 1236 1237 if (sdata->vif.type != NL80211_IFTYPE_STATION || 1238 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) 1239 IEEE80211_SKB_CB(skb)->flags |= 1240 IEEE80211_TX_INTFL_DONT_ENCRYPT; 1241 1242 ieee80211_tx_skb(sdata, skb); 1243 } 1244 } 1245 1246 static int ieee80211_put_s1g_cap(struct sk_buff *skb, 1247 struct ieee80211_sta_s1g_cap *s1g_cap) 1248 { 1249 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_s1g_cap)) 1250 return -ENOBUFS; 1251 1252 skb_put_u8(skb, WLAN_EID_S1G_CAPABILITIES); 1253 skb_put_u8(skb, sizeof(struct ieee80211_s1g_cap)); 1254 1255 skb_put_data(skb, &s1g_cap->cap, sizeof(s1g_cap->cap)); 1256 skb_put_data(skb, &s1g_cap->nss_mcs, sizeof(s1g_cap->nss_mcs)); 1257 1258 return 0; 1259 } 1260 1261 static int ieee80211_put_preq_ies_band(struct sk_buff *skb, 1262 struct ieee80211_sub_if_data *sdata, 1263 const u8 *ie, size_t ie_len, 1264 size_t *offset, 1265 enum nl80211_band band, 1266 u32 rate_mask, 1267 struct cfg80211_chan_def *chandef, 1268 u32 flags) 1269 { 1270 struct ieee80211_local *local = sdata->local; 1271 struct ieee80211_supported_band *sband; 1272 int i, err; 1273 size_t noffset; 1274 bool have_80mhz = false; 1275 1276 *offset = 0; 1277 1278 sband = local->hw.wiphy->bands[band]; 1279 if (WARN_ON_ONCE(!sband)) 1280 return 0; 1281 1282 /* For direct scan add S1G IE and consider its override bits */ 1283 if (band == NL80211_BAND_S1GHZ) 1284 return ieee80211_put_s1g_cap(skb, &sband->s1g_cap); 1285 1286 err = ieee80211_put_srates_elem(skb, sband, 0, 1287 ~rate_mask, WLAN_EID_SUPP_RATES); 1288 if (err) 1289 return err; 1290 1291 /* insert "request information" if in custom IEs */ 1292 if (ie && ie_len) { 1293 static const u8 before_extrates[] = { 1294 WLAN_EID_SSID, 1295 WLAN_EID_SUPP_RATES, 1296 WLAN_EID_REQUEST, 1297 }; 1298 noffset = ieee80211_ie_split(ie, ie_len, 1299 before_extrates, 1300 ARRAY_SIZE(before_extrates), 1301 *offset); 1302 if (skb_tailroom(skb) < noffset - *offset) 1303 return -ENOBUFS; 1304 skb_put_data(skb, ie + *offset, noffset - *offset); 1305 *offset = noffset; 1306 } 1307 1308 err = ieee80211_put_srates_elem(skb, sband, 0, 1309 ~rate_mask, WLAN_EID_EXT_SUPP_RATES); 1310 if (err) 1311 return err; 1312 1313 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) { 1314 if (skb_tailroom(skb) < 3) 1315 return -ENOBUFS; 1316 skb_put_u8(skb, WLAN_EID_DS_PARAMS); 1317 skb_put_u8(skb, 1); 1318 skb_put_u8(skb, 1319 ieee80211_frequency_to_channel(chandef->chan->center_freq)); 1320 } 1321 1322 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT) 1323 return 0; 1324 1325 /* insert custom IEs that go before HT */ 1326 if (ie && ie_len) { 1327 static const u8 before_ht[] = { 1328 /* 1329 * no need to list the ones split off already 1330 * (or generated here) 1331 */ 1332 WLAN_EID_DS_PARAMS, 1333 WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 1334 }; 1335 noffset = ieee80211_ie_split(ie, ie_len, 1336 before_ht, ARRAY_SIZE(before_ht), 1337 *offset); 1338 if (skb_tailroom(skb) < noffset - *offset) 1339 return -ENOBUFS; 1340 skb_put_data(skb, ie + *offset, noffset - *offset); 1341 *offset = noffset; 1342 } 1343 1344 if (sband->ht_cap.ht_supported) { 1345 u8 *pos; 1346 1347 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap)) 1348 return -ENOBUFS; 1349 1350 pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_cap)); 1351 ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, 1352 sband->ht_cap.cap); 1353 } 1354 1355 /* insert custom IEs that go before VHT */ 1356 if (ie && ie_len) { 1357 static const u8 before_vht[] = { 1358 /* 1359 * no need to list the ones split off already 1360 * (or generated here) 1361 */ 1362 WLAN_EID_BSS_COEX_2040, 1363 WLAN_EID_EXT_CAPABILITY, 1364 WLAN_EID_SSID_LIST, 1365 WLAN_EID_CHANNEL_USAGE, 1366 WLAN_EID_INTERWORKING, 1367 WLAN_EID_MESH_ID, 1368 /* 60 GHz (Multi-band, DMG, MMS) can't happen */ 1369 }; 1370 noffset = ieee80211_ie_split(ie, ie_len, 1371 before_vht, ARRAY_SIZE(before_vht), 1372 *offset); 1373 if (skb_tailroom(skb) < noffset - *offset) 1374 return -ENOBUFS; 1375 skb_put_data(skb, ie + *offset, noffset - *offset); 1376 *offset = noffset; 1377 } 1378 1379 /* Check if any channel in this sband supports at least 80 MHz */ 1380 for (i = 0; i < sband->n_channels; i++) { 1381 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | 1382 IEEE80211_CHAN_NO_80MHZ)) 1383 continue; 1384 1385 have_80mhz = true; 1386 break; 1387 } 1388 1389 if (sband->vht_cap.vht_supported && have_80mhz) { 1390 u8 *pos; 1391 1392 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_vht_cap)) 1393 return -ENOBUFS; 1394 1395 pos = skb_put(skb, 2 + sizeof(struct ieee80211_vht_cap)); 1396 ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, 1397 sband->vht_cap.cap); 1398 } 1399 1400 /* insert custom IEs that go before HE */ 1401 if (ie && ie_len) { 1402 static const u8 before_he[] = { 1403 /* 1404 * no need to list the ones split off before VHT 1405 * or generated here 1406 */ 1407 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS, 1408 WLAN_EID_AP_CSN, 1409 /* TODO: add 11ah/11aj/11ak elements */ 1410 }; 1411 noffset = ieee80211_ie_split(ie, ie_len, 1412 before_he, ARRAY_SIZE(before_he), 1413 *offset); 1414 if (skb_tailroom(skb) < noffset - *offset) 1415 return -ENOBUFS; 1416 skb_put_data(skb, ie + *offset, noffset - *offset); 1417 *offset = noffset; 1418 } 1419 1420 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 1421 IEEE80211_CHAN_NO_HE)) { 1422 err = ieee80211_put_he_cap(skb, sdata, sband, NULL); 1423 if (err) 1424 return err; 1425 } 1426 1427 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 1428 IEEE80211_CHAN_NO_HE | 1429 IEEE80211_CHAN_NO_EHT)) { 1430 err = ieee80211_put_eht_cap(skb, sdata, sband, NULL); 1431 if (err) 1432 return err; 1433 } 1434 1435 err = ieee80211_put_he_6ghz_cap(skb, sdata, IEEE80211_SMPS_OFF); 1436 if (err) 1437 return err; 1438 1439 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 1440 IEEE80211_CHAN_NO_UHR)) { 1441 err = ieee80211_put_uhr_cap(skb, sdata, sband); 1442 if (err) 1443 return err; 1444 } 1445 1446 /* 1447 * If adding more here, adjust code in main.c 1448 * that calculates local->scan_ies_len. 1449 */ 1450 1451 return 0; 1452 } 1453 1454 static int ieee80211_put_preq_ies(struct sk_buff *skb, 1455 struct ieee80211_sub_if_data *sdata, 1456 struct ieee80211_scan_ies *ie_desc, 1457 const u8 *ie, size_t ie_len, 1458 u8 bands_used, u32 *rate_masks, 1459 struct cfg80211_chan_def *chandef, 1460 u32 flags) 1461 { 1462 size_t custom_ie_offset = 0; 1463 int i, err; 1464 1465 memset(ie_desc, 0, sizeof(*ie_desc)); 1466 1467 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1468 if (bands_used & BIT(i)) { 1469 ie_desc->ies[i] = skb_tail_pointer(skb); 1470 err = ieee80211_put_preq_ies_band(skb, sdata, 1471 ie, ie_len, 1472 &custom_ie_offset, 1473 i, rate_masks[i], 1474 chandef, flags); 1475 if (err) 1476 return err; 1477 ie_desc->len[i] = skb_tail_pointer(skb) - 1478 ie_desc->ies[i]; 1479 } 1480 } 1481 1482 /* add any remaining custom IEs */ 1483 if (ie && ie_len) { 1484 if (WARN_ONCE(skb_tailroom(skb) < ie_len - custom_ie_offset, 1485 "not enough space for preq custom IEs\n")) 1486 return -ENOBUFS; 1487 ie_desc->common_ies = skb_tail_pointer(skb); 1488 skb_put_data(skb, ie + custom_ie_offset, 1489 ie_len - custom_ie_offset); 1490 ie_desc->common_ie_len = skb_tail_pointer(skb) - 1491 ie_desc->common_ies; 1492 } 1493 1494 return 0; 1495 }; 1496 1497 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 1498 size_t buffer_len, 1499 struct ieee80211_scan_ies *ie_desc, 1500 const u8 *ie, size_t ie_len, 1501 u8 bands_used, u32 *rate_masks, 1502 struct cfg80211_chan_def *chandef, 1503 u32 flags) 1504 { 1505 struct sk_buff *skb = alloc_skb(buffer_len, GFP_KERNEL); 1506 uintptr_t offs; 1507 int ret, i; 1508 u8 *start; 1509 1510 if (!skb) 1511 return -ENOMEM; 1512 1513 start = skb_tail_pointer(skb); 1514 memset(start, 0, skb_tailroom(skb)); 1515 ret = ieee80211_put_preq_ies(skb, sdata, ie_desc, ie, ie_len, 1516 bands_used, rate_masks, chandef, 1517 flags); 1518 if (ret < 0) { 1519 goto out; 1520 } 1521 1522 if (skb->len > buffer_len) { 1523 ret = -ENOBUFS; 1524 goto out; 1525 } 1526 1527 memcpy(buffer, start, skb->len); 1528 1529 /* adjust ie_desc for copy */ 1530 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1531 offs = ie_desc->ies[i] - start; 1532 ie_desc->ies[i] = buffer + offs; 1533 } 1534 offs = ie_desc->common_ies - start; 1535 ie_desc->common_ies = buffer + offs; 1536 1537 ret = skb->len; 1538 out: 1539 consume_skb(skb); 1540 return ret; 1541 } 1542 1543 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1544 const u8 *src, const u8 *dst, 1545 u32 ratemask, 1546 struct ieee80211_channel *chan, 1547 const u8 *ssid, size_t ssid_len, 1548 const u8 *ie, size_t ie_len, 1549 u32 flags) 1550 { 1551 struct ieee80211_local *local = sdata->local; 1552 struct cfg80211_chan_def chandef; 1553 struct sk_buff *skb; 1554 struct ieee80211_mgmt *mgmt; 1555 u32 rate_masks[NUM_NL80211_BANDS] = {}; 1556 struct ieee80211_scan_ies dummy_ie_desc; 1557 1558 /* 1559 * Do not send DS Channel parameter for directed probe requests 1560 * in order to maximize the chance that we get a response. Some 1561 * badly-behaved APs don't respond when this parameter is included. 1562 */ 1563 chandef.width = sdata->vif.bss_conf.chanreq.oper.width; 1564 if (flags & IEEE80211_PROBE_FLAG_DIRECTED) 1565 chandef.chan = NULL; 1566 else 1567 chandef.chan = chan; 1568 1569 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len, 1570 local->scan_ies_len + ie_len); 1571 if (!skb) 1572 return NULL; 1573 1574 rate_masks[chan->band] = ratemask; 1575 ieee80211_put_preq_ies(skb, sdata, &dummy_ie_desc, 1576 ie, ie_len, BIT(chan->band), 1577 rate_masks, &chandef, flags); 1578 1579 if (dst) { 1580 mgmt = (struct ieee80211_mgmt *) skb->data; 1581 memcpy(mgmt->da, dst, ETH_ALEN); 1582 memcpy(mgmt->bssid, dst, ETH_ALEN); 1583 } 1584 1585 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 1586 1587 return skb; 1588 } 1589 1590 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1591 struct ieee802_11_elems *elems, 1592 enum nl80211_band band, u32 *basic_rates) 1593 { 1594 struct ieee80211_supported_band *sband; 1595 size_t num_rates; 1596 u32 supp_rates; 1597 int i, j; 1598 1599 sband = sdata->local->hw.wiphy->bands[band]; 1600 if (WARN_ON(!sband)) 1601 return 1; 1602 1603 num_rates = sband->n_bitrates; 1604 supp_rates = 0; 1605 for (i = 0; i < elems->supp_rates_len + 1606 elems->ext_supp_rates_len; i++) { 1607 u8 rate = 0; 1608 int own_rate; 1609 bool is_basic; 1610 if (i < elems->supp_rates_len) 1611 rate = elems->supp_rates[i]; 1612 else if (elems->ext_supp_rates) 1613 rate = elems->ext_supp_rates 1614 [i - elems->supp_rates_len]; 1615 own_rate = 5 * (rate & 0x7f); 1616 is_basic = !!(rate & 0x80); 1617 1618 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 1619 continue; 1620 1621 for (j = 0; j < num_rates; j++) { 1622 int brate = sband->bitrates[j].bitrate; 1623 1624 if (brate == own_rate) { 1625 supp_rates |= BIT(j); 1626 if (basic_rates && is_basic) 1627 *basic_rates |= BIT(j); 1628 } 1629 } 1630 } 1631 return supp_rates; 1632 } 1633 1634 void ieee80211_stop_device(struct ieee80211_local *local, bool suspend) 1635 { 1636 local_bh_disable(); 1637 ieee80211_handle_queued_frames(local); 1638 local_bh_enable(); 1639 1640 ieee80211_led_radio(local, false); 1641 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); 1642 1643 wiphy_work_cancel(local->hw.wiphy, &local->reconfig_filter); 1644 1645 flush_workqueue(local->workqueue); 1646 wiphy_work_flush(local->hw.wiphy, NULL); 1647 drv_stop(local, suspend); 1648 } 1649 1650 static void ieee80211_flush_completed_scan(struct ieee80211_local *local, 1651 bool aborted) 1652 { 1653 /* It's possible that we don't handle the scan completion in 1654 * time during suspend, so if it's still marked as completed 1655 * here, queue the work and flush it to clean things up. 1656 * Instead of calling the worker function directly here, we 1657 * really queue it to avoid potential races with other flows 1658 * scheduling the same work. 1659 */ 1660 if (test_bit(SCAN_COMPLETED, &local->scanning)) { 1661 /* If coming from reconfiguration failure, abort the scan so 1662 * we don't attempt to continue a partial HW scan - which is 1663 * possible otherwise if (e.g.) the 2.4 GHz portion was the 1664 * completed scan, and a 5 GHz portion is still pending. 1665 */ 1666 if (aborted) 1667 set_bit(SCAN_ABORTED, &local->scanning); 1668 wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work, 0); 1669 wiphy_delayed_work_flush(local->hw.wiphy, &local->scan_work); 1670 } 1671 } 1672 1673 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) 1674 { 1675 struct ieee80211_sub_if_data *sdata; 1676 struct ieee80211_chanctx *ctx; 1677 1678 lockdep_assert_wiphy(local->hw.wiphy); 1679 1680 /* 1681 * We get here if during resume the device can't be restarted properly. 1682 * We might also get here if this happens during HW reset, which is a 1683 * slightly different situation and we need to drop all connections in 1684 * the latter case. 1685 * 1686 * Ask cfg80211 to turn off all interfaces, this will result in more 1687 * warnings but at least we'll then get into a clean stopped state. 1688 */ 1689 1690 local->resuming = false; 1691 local->suspended = false; 1692 local->in_reconfig = false; 1693 local->reconfig_failure = true; 1694 1695 ieee80211_flush_completed_scan(local, true); 1696 1697 /* scheduled scan clearly can't be running any more, but tell 1698 * cfg80211 and clear local state 1699 */ 1700 ieee80211_sched_scan_end(local); 1701 1702 list_for_each_entry(sdata, &local->interfaces, list) 1703 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; 1704 1705 /* Mark channel contexts as not being in the driver any more to avoid 1706 * removing them from the driver during the shutdown process... 1707 */ 1708 list_for_each_entry(ctx, &local->chanctx_list, list) 1709 ctx->driver_present = false; 1710 } 1711 1712 static void ieee80211_assign_chanctx(struct ieee80211_local *local, 1713 struct ieee80211_sub_if_data *sdata, 1714 struct ieee80211_link_data *link) 1715 { 1716 struct ieee80211_chanctx_conf *conf; 1717 struct ieee80211_chanctx *ctx; 1718 1719 lockdep_assert_wiphy(local->hw.wiphy); 1720 1721 conf = rcu_dereference_protected(link->conf->chanctx_conf, 1722 lockdep_is_held(&local->hw.wiphy->mtx)); 1723 if (conf) { 1724 ctx = container_of(conf, struct ieee80211_chanctx, conf); 1725 drv_assign_vif_chanctx(local, sdata, link->conf, ctx); 1726 } 1727 } 1728 1729 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata) 1730 { 1731 struct ieee80211_local *local = sdata->local; 1732 struct sta_info *sta; 1733 1734 lockdep_assert_wiphy(local->hw.wiphy); 1735 1736 /* add STAs back */ 1737 list_for_each_entry(sta, &local->sta_list, list) { 1738 enum ieee80211_sta_state state; 1739 1740 if (!sta->uploaded || sta->sdata != sdata) 1741 continue; 1742 1743 for (state = IEEE80211_STA_NOTEXIST; 1744 state < sta->sta_state; state++) 1745 WARN_ON(drv_sta_state(local, sta->sdata, sta, state, 1746 state + 1)); 1747 } 1748 } 1749 1750 static int 1751 ieee80211_reconfig_nan_offload_de(struct ieee80211_sub_if_data *sdata) 1752 { 1753 struct cfg80211_nan_func *func, **funcs; 1754 int res, id, i = 0; 1755 1756 funcs = kzalloc_objs(*funcs, sdata->local->hw.max_nan_de_entries + 1); 1757 if (!funcs) 1758 return -ENOMEM; 1759 1760 /* Add all the functions: 1761 * This is a little bit ugly. We need to call a potentially sleeping 1762 * callback for each NAN function, so we can't hold the spinlock. 1763 */ 1764 spin_lock_bh(&sdata->u.nan.de.func_lock); 1765 1766 idr_for_each_entry(&sdata->u.nan.de.function_inst_ids, func, id) 1767 funcs[i++] = func; 1768 1769 spin_unlock_bh(&sdata->u.nan.de.func_lock); 1770 1771 for (i = 0; funcs[i]; i++) { 1772 res = drv_add_nan_func(sdata->local, sdata, funcs[i]); 1773 if (WARN_ON(res)) 1774 ieee80211_nan_func_terminated(&sdata->vif, 1775 funcs[i]->instance_id, 1776 NL80211_NAN_FUNC_TERM_REASON_ERROR, 1777 GFP_KERNEL); 1778 } 1779 1780 kfree(funcs); 1781 return res; 1782 } 1783 1784 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata) 1785 { 1786 struct ieee80211_local *local = sdata->local; 1787 struct ieee80211_sub_if_data *ndi_sdata; 1788 struct sta_info *sta; 1789 int res; 1790 1791 res = drv_start_nan(local, sdata, &sdata->u.nan.conf); 1792 if (WARN_ON(res)) 1793 return res; 1794 1795 if (!(sdata->local->hw.wiphy->nan_capa.flags & WIPHY_NAN_FLAGS_USERSPACE_DE)) 1796 return ieee80211_reconfig_nan_offload_de(sdata); 1797 1798 drv_vif_cfg_changed(sdata->local, sdata, BSS_CHANGED_NAN_LOCAL_SCHED); 1799 1800 /* Now we can add all the NDIs to the driver */ 1801 list_for_each_entry(ndi_sdata, &local->interfaces, list) { 1802 if (ndi_sdata->vif.type == NL80211_IFTYPE_NAN_DATA) { 1803 res = drv_add_interface(local, ndi_sdata); 1804 if (WARN_ON(res)) 1805 return res; 1806 } 1807 } 1808 1809 /* Add NMI stations (stations on the NAN interface) */ 1810 list_for_each_entry(sta, &local->sta_list, list) { 1811 enum ieee80211_sta_state state; 1812 1813 if (!sta->uploaded || sta->sdata != sdata) 1814 continue; 1815 1816 for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; 1817 state++) { 1818 res = drv_sta_state(local, sdata, sta, state, 1819 state + 1); 1820 if (WARN_ON(res)) 1821 return res; 1822 } 1823 1824 /* Add peer schedules for NMI stations that have them */ 1825 if (!sta->sta.nan_sched) 1826 continue; 1827 1828 res = drv_nan_peer_sched_changed(local, sdata, sta); 1829 if (WARN_ON(res)) 1830 return res; 1831 } 1832 1833 /* Add NDI stations (stations on NAN_DATA interfaces) */ 1834 list_for_each_entry(sta, &local->sta_list, list) { 1835 enum ieee80211_sta_state state; 1836 1837 if (!sta->uploaded || 1838 sta->sdata->vif.type != NL80211_IFTYPE_NAN_DATA) 1839 continue; 1840 1841 if (WARN_ON(!sta->sta.nmi)) 1842 continue; 1843 1844 for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; 1845 state++) { 1846 res = drv_sta_state(local, sta->sdata, sta, state, 1847 state + 1); 1848 if (WARN_ON(res)) 1849 return res; 1850 } 1851 } 1852 1853 return 0; 1854 } 1855 1856 static void ieee80211_reconfig_ap_links(struct ieee80211_local *local, 1857 struct ieee80211_sub_if_data *sdata, 1858 u64 changed) 1859 { 1860 int link_id; 1861 1862 for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { 1863 struct ieee80211_link_data *link; 1864 1865 if (!(sdata->vif.active_links & BIT(link_id))) 1866 continue; 1867 1868 link = sdata_dereference(sdata->link[link_id], sdata); 1869 if (!link) 1870 continue; 1871 1872 if (rcu_access_pointer(link->u.ap.beacon)) 1873 drv_start_ap(local, sdata, link->conf); 1874 1875 if (!link->conf->enable_beacon) 1876 continue; 1877 1878 changed |= BSS_CHANGED_BEACON | 1879 BSS_CHANGED_BEACON_ENABLED; 1880 1881 ieee80211_link_info_change_notify(sdata, link, changed); 1882 } 1883 } 1884 1885 int ieee80211_reconfig(struct ieee80211_local *local) 1886 { 1887 struct ieee80211_hw *hw = &local->hw; 1888 struct ieee80211_sub_if_data *sdata; 1889 struct ieee80211_chanctx *ctx; 1890 struct sta_info *sta; 1891 int res, i; 1892 bool reconfig_due_to_wowlan = false; 1893 struct ieee80211_sub_if_data *sched_scan_sdata; 1894 struct cfg80211_sched_scan_request *sched_scan_req; 1895 bool sched_scan_stopped = false; 1896 bool suspended = local->suspended; 1897 bool in_reconfig = false; 1898 1899 lockdep_assert_wiphy(local->hw.wiphy); 1900 1901 /* nothing to do if HW shouldn't run */ 1902 if (!local->open_count) 1903 goto wake_up; 1904 1905 #ifdef CONFIG_PM 1906 if (suspended) 1907 local->resuming = true; 1908 1909 if (local->wowlan) { 1910 /* 1911 * In the wowlan case, both mac80211 and the device 1912 * are functional when the resume op is called, so 1913 * clear local->suspended so the device could operate 1914 * normally (e.g. pass rx frames). 1915 */ 1916 local->suspended = false; 1917 res = drv_resume(local); 1918 local->wowlan = false; 1919 if (res < 0) { 1920 local->resuming = false; 1921 return res; 1922 } 1923 if (res == 0) 1924 goto wake_up; 1925 WARN_ON(res > 1); 1926 /* 1927 * res is 1, which means the driver requested 1928 * to go through a regular reset on wakeup. 1929 * restore local->suspended in this case. 1930 */ 1931 reconfig_due_to_wowlan = true; 1932 local->suspended = true; 1933 } 1934 #endif 1935 1936 /* 1937 * In case of hw_restart during suspend (without wowlan), 1938 * cancel restart work, as we are reconfiguring the device 1939 * anyway. 1940 * Note that restart_work is scheduled on a frozen workqueue, 1941 * so we can't deadlock in this case. 1942 */ 1943 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan) 1944 cancel_work_sync(&local->restart_work); 1945 1946 local->started = false; 1947 1948 /* 1949 * Upon resume hardware can sometimes be goofy due to 1950 * various platform / driver / bus issues, so restarting 1951 * the device may at times not work immediately. Propagate 1952 * the error. 1953 */ 1954 res = drv_start(local); 1955 if (res) { 1956 if (suspended) 1957 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); 1958 else 1959 WARN(1, "Hardware became unavailable during restart.\n"); 1960 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 1961 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1962 false); 1963 ieee80211_handle_reconfig_failure(local); 1964 return res; 1965 } 1966 1967 /* setup fragmentation threshold */ 1968 drv_set_frag_threshold(local, -1, hw->wiphy->frag_threshold); 1969 1970 /* setup RTS threshold */ 1971 if (hw->wiphy->n_radio > 0) { 1972 for (i = 0; i < hw->wiphy->n_radio; i++) { 1973 u32 rts_threshold = 1974 hw->wiphy->radio_cfg[i].rts_threshold; 1975 1976 drv_set_rts_threshold(local, i, rts_threshold); 1977 } 1978 } else { 1979 drv_set_rts_threshold(local, -1, hw->wiphy->rts_threshold); 1980 } 1981 1982 /* reset coverage class */ 1983 drv_set_coverage_class(local, -1, hw->wiphy->coverage_class); 1984 1985 ieee80211_led_radio(local, true); 1986 ieee80211_mod_tpt_led_trig(local, 1987 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); 1988 1989 /* add interfaces */ 1990 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); 1991 if (sdata && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) { 1992 /* in HW restart it exists already */ 1993 WARN_ON(local->resuming); 1994 res = drv_add_interface(local, sdata); 1995 if (WARN_ON(res)) { 1996 RCU_INIT_POINTER(local->monitor_sdata, NULL); 1997 synchronize_net(); 1998 kfree(sdata); 1999 } 2000 } 2001 2002 list_for_each_entry(sdata, &local->interfaces, list) { 2003 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && 2004 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 2005 continue; 2006 /* These vifs can't be added before NAN was started */ 2007 if (sdata->vif.type == NL80211_IFTYPE_NAN_DATA) 2008 continue; 2009 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 2010 ieee80211_sdata_running(sdata)) { 2011 res = drv_add_interface(local, sdata); 2012 if (WARN_ON(res)) 2013 break; 2014 } 2015 } 2016 2017 /* If adding any of the interfaces failed above, roll back and 2018 * report failure. 2019 */ 2020 if (res) { 2021 list_for_each_entry_continue_reverse(sdata, &local->interfaces, 2022 list) { 2023 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && 2024 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 2025 continue; 2026 if (sdata->vif.type == NL80211_IFTYPE_NAN_DATA) 2027 continue; 2028 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 2029 ieee80211_sdata_running(sdata)) 2030 drv_remove_interface(local, sdata); 2031 } 2032 ieee80211_handle_reconfig_failure(local); 2033 return res; 2034 } 2035 2036 /* add channel contexts */ 2037 list_for_each_entry(ctx, &local->chanctx_list, list) 2038 if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER) 2039 WARN_ON(drv_add_chanctx(local, ctx)); 2040 2041 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); 2042 if (sdata && ieee80211_sdata_running(sdata)) 2043 ieee80211_assign_chanctx(local, sdata, &sdata->deflink); 2044 2045 /* reconfigure hardware */ 2046 ieee80211_hw_config(local, -1, IEEE80211_CONF_CHANGE_LISTEN_INTERVAL | 2047 IEEE80211_CONF_CHANGE_MONITOR | 2048 IEEE80211_CONF_CHANGE_PS | 2049 IEEE80211_CONF_CHANGE_RETRY_LIMITS | 2050 IEEE80211_CONF_CHANGE_IDLE); 2051 2052 ieee80211_configure_filter(local); 2053 2054 /* Finally also reconfigure all the BSS information */ 2055 list_for_each_entry(sdata, &local->interfaces, list) { 2056 /* common change flags for all interface types - link only */ 2057 u64 changed = BSS_CHANGED_ERP_CTS_PROT | 2058 BSS_CHANGED_ERP_PREAMBLE | 2059 BSS_CHANGED_ERP_SLOT | 2060 BSS_CHANGED_HT | 2061 BSS_CHANGED_BASIC_RATES | 2062 BSS_CHANGED_BEACON_INT | 2063 BSS_CHANGED_BSSID | 2064 BSS_CHANGED_CQM | 2065 BSS_CHANGED_QOS | 2066 BSS_CHANGED_TXPOWER | 2067 BSS_CHANGED_MCAST_RATE; 2068 struct ieee80211_link_data *link = NULL; 2069 unsigned int link_id; 2070 u32 active_links = 0; 2071 2072 if (!ieee80211_sdata_running(sdata)) 2073 continue; 2074 2075 if (ieee80211_vif_is_mld(&sdata->vif)) { 2076 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS] = { 2077 [0] = &sdata->vif.bss_conf, 2078 }; 2079 2080 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 2081 /* start with a single active link */ 2082 active_links = sdata->vif.active_links; 2083 link_id = ffs(active_links) - 1; 2084 sdata->vif.active_links = BIT(link_id); 2085 } 2086 2087 drv_change_vif_links(local, sdata, 0, 2088 sdata->vif.active_links, 2089 old); 2090 } 2091 2092 sdata->restart_active_links = active_links; 2093 2094 for (link_id = 0; 2095 link_id < ARRAY_SIZE(sdata->vif.link_conf); 2096 link_id++) { 2097 if (!ieee80211_vif_link_active(&sdata->vif, link_id)) 2098 continue; 2099 2100 link = sdata_dereference(sdata->link[link_id], sdata); 2101 if (!link) 2102 continue; 2103 2104 ieee80211_assign_chanctx(local, sdata, link); 2105 } 2106 2107 switch (sdata->vif.type) { 2108 case NL80211_IFTYPE_AP_VLAN: 2109 case NL80211_IFTYPE_MONITOR: 2110 break; 2111 case NL80211_IFTYPE_NAN: 2112 case NL80211_IFTYPE_NAN_DATA: 2113 /* NAN stations are handled later */ 2114 break; 2115 case NL80211_IFTYPE_ADHOC: 2116 if (sdata->vif.cfg.ibss_joined) 2117 WARN_ON(drv_join_ibss(local, sdata)); 2118 fallthrough; 2119 default: 2120 ieee80211_reconfig_stations(sdata); 2121 fallthrough; 2122 case NL80211_IFTYPE_AP: /* AP stations are handled later */ 2123 for (i = 0; i < IEEE80211_NUM_ACS; i++) 2124 drv_conf_tx(local, &sdata->deflink, i, 2125 &sdata->deflink.tx_conf[i]); 2126 break; 2127 } 2128 2129 if (sdata->vif.bss_conf.mu_mimo_owner) 2130 changed |= BSS_CHANGED_MU_GROUPS; 2131 2132 if (!ieee80211_vif_is_mld(&sdata->vif)) 2133 changed |= BSS_CHANGED_IDLE; 2134 2135 switch (sdata->vif.type) { 2136 case NL80211_IFTYPE_STATION: 2137 if (!ieee80211_vif_is_mld(&sdata->vif)) { 2138 changed |= BSS_CHANGED_ASSOC | 2139 BSS_CHANGED_ARP_FILTER | 2140 BSS_CHANGED_PS; 2141 2142 /* Re-send beacon info report to the driver */ 2143 if (sdata->deflink.u.mgd.have_beacon) 2144 changed |= BSS_CHANGED_BEACON_INFO; 2145 2146 if (sdata->vif.bss_conf.max_idle_period || 2147 sdata->vif.bss_conf.protected_keep_alive) 2148 changed |= BSS_CHANGED_KEEP_ALIVE; 2149 2150 ieee80211_bss_info_change_notify(sdata, 2151 changed); 2152 } else if (!WARN_ON(!link)) { 2153 if (link->conf->npca.enabled) 2154 changed |= BSS_CHANGED_NPCA; 2155 2156 ieee80211_link_info_change_notify(sdata, link, 2157 changed); 2158 changed = BSS_CHANGED_ASSOC | 2159 BSS_CHANGED_IDLE | 2160 BSS_CHANGED_PS | 2161 BSS_CHANGED_ARP_FILTER; 2162 ieee80211_vif_cfg_change_notify(sdata, changed); 2163 } 2164 break; 2165 case NL80211_IFTYPE_OCB: 2166 changed |= BSS_CHANGED_OCB; 2167 ieee80211_bss_info_change_notify(sdata, changed); 2168 break; 2169 case NL80211_IFTYPE_ADHOC: 2170 changed |= BSS_CHANGED_IBSS; 2171 fallthrough; 2172 case NL80211_IFTYPE_AP: 2173 changed |= BSS_CHANGED_P2P_PS; 2174 2175 if (ieee80211_vif_is_mld(&sdata->vif)) 2176 ieee80211_vif_cfg_change_notify(sdata, 2177 BSS_CHANGED_SSID); 2178 else 2179 changed |= BSS_CHANGED_SSID; 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 (ieee80211_vif_is_mld(&sdata->vif)) { 2190 ieee80211_reconfig_ap_links(local, 2191 sdata, 2192 changed); 2193 break; 2194 } 2195 2196 if (rcu_access_pointer(sdata->deflink.u.ap.beacon)) 2197 drv_start_ap(local, sdata, 2198 sdata->deflink.conf); 2199 } 2200 fallthrough; 2201 case NL80211_IFTYPE_MESH_POINT: 2202 if (sdata->vif.bss_conf.enable_beacon) { 2203 changed |= BSS_CHANGED_BEACON | 2204 BSS_CHANGED_BEACON_ENABLED; 2205 ieee80211_bss_info_change_notify(sdata, changed); 2206 } 2207 break; 2208 case NL80211_IFTYPE_NAN: 2209 WARN_ON(ieee80211_reconfig_nan(sdata)); 2210 break; 2211 case NL80211_IFTYPE_NAN_DATA: 2212 case NL80211_IFTYPE_AP_VLAN: 2213 case NL80211_IFTYPE_MONITOR: 2214 case NL80211_IFTYPE_P2P_DEVICE: 2215 case NL80211_IFTYPE_PD: 2216 /* nothing to do */ 2217 break; 2218 case NL80211_IFTYPE_UNSPECIFIED: 2219 case NUM_NL80211_IFTYPES: 2220 case NL80211_IFTYPE_P2P_CLIENT: 2221 case NL80211_IFTYPE_P2P_GO: 2222 case NL80211_IFTYPE_WDS: 2223 WARN_ON(1); 2224 break; 2225 } 2226 } 2227 2228 ieee80211_recalc_ps(local); 2229 2230 /* 2231 * The sta might be in psm against the ap (e.g. because 2232 * this was the state before a hw restart), so we 2233 * explicitly send a null packet in order to make sure 2234 * it'll sync against the ap (and get out of psm). 2235 */ 2236 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { 2237 list_for_each_entry(sdata, &local->interfaces, list) { 2238 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2239 continue; 2240 if (!sdata->u.mgd.associated) 2241 continue; 2242 2243 ieee80211_send_nullfunc(local, sdata, false); 2244 } 2245 } 2246 2247 /* APs are now beaconing, add back stations */ 2248 list_for_each_entry(sdata, &local->interfaces, list) { 2249 if (!ieee80211_sdata_running(sdata)) 2250 continue; 2251 2252 switch (sdata->vif.type) { 2253 case NL80211_IFTYPE_AP_VLAN: 2254 case NL80211_IFTYPE_AP: 2255 ieee80211_reconfig_stations(sdata); 2256 break; 2257 default: 2258 break; 2259 } 2260 } 2261 2262 /* add back keys */ 2263 list_for_each_entry(sdata, &local->interfaces, list) 2264 ieee80211_reenable_keys(sdata); 2265 2266 /* re-enable multi-link for client interfaces */ 2267 list_for_each_entry(sdata, &local->interfaces, list) { 2268 if (sdata->restart_active_links) 2269 ieee80211_set_active_links(&sdata->vif, 2270 sdata->restart_active_links); 2271 /* 2272 * If a link switch was scheduled before the restart, and ran 2273 * before reconfig, it will do nothing, so re-schedule. 2274 */ 2275 if (sdata->desired_active_links) 2276 wiphy_work_queue(sdata->local->hw.wiphy, 2277 &sdata->activate_links_work); 2278 } 2279 2280 /* Reconfigure sched scan if it was interrupted by FW restart */ 2281 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, 2282 lockdep_is_held(&local->hw.wiphy->mtx)); 2283 sched_scan_req = rcu_dereference_protected(local->sched_scan_req, 2284 lockdep_is_held(&local->hw.wiphy->mtx)); 2285 if (sched_scan_sdata && sched_scan_req) 2286 /* 2287 * Sched scan stopped, but we don't want to report it. Instead, 2288 * we're trying to reschedule. However, if more than one scan 2289 * plan was set, we cannot reschedule since we don't know which 2290 * scan plan was currently running (and some scan plans may have 2291 * already finished). 2292 */ 2293 if (sched_scan_req->n_scan_plans > 1 || 2294 __ieee80211_request_sched_scan_start(sched_scan_sdata, 2295 sched_scan_req)) { 2296 RCU_INIT_POINTER(local->sched_scan_sdata, NULL); 2297 RCU_INIT_POINTER(local->sched_scan_req, NULL); 2298 sched_scan_stopped = true; 2299 } 2300 2301 if (sched_scan_stopped) 2302 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0); 2303 2304 wake_up: 2305 /* 2306 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation 2307 * sessions can be established after a resume. 2308 * 2309 * Also tear down aggregation sessions since reconfiguring 2310 * them in a hardware restart scenario is not easily done 2311 * right now, and the hardware will have lost information 2312 * about the sessions, but we and the AP still think they 2313 * are active. This is really a workaround though. 2314 */ 2315 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { 2316 list_for_each_entry(sta, &local->sta_list, list) { 2317 if (!local->resuming) 2318 ieee80211_sta_tear_down_BA_sessions( 2319 sta, AGG_STOP_LOCAL_REQUEST); 2320 clear_sta_flag(sta, WLAN_STA_BLOCK_BA); 2321 } 2322 } 2323 2324 /* 2325 * If this is for hw restart things are still running. 2326 * We may want to change that later, however. 2327 */ 2328 if (local->open_count && (!suspended || reconfig_due_to_wowlan)) 2329 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART); 2330 2331 if (local->in_reconfig) { 2332 in_reconfig = local->in_reconfig; 2333 local->in_reconfig = false; 2334 barrier(); 2335 2336 ieee80211_reconfig_roc(local); 2337 2338 /* Requeue all works */ 2339 list_for_each_entry(sdata, &local->interfaces, list) { 2340 if (ieee80211_sdata_running(sdata)) 2341 wiphy_work_queue(local->hw.wiphy, &sdata->work); 2342 } 2343 } 2344 2345 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 2346 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 2347 false); 2348 2349 if (in_reconfig) { 2350 list_for_each_entry(sdata, &local->interfaces, list) { 2351 if (!ieee80211_sdata_running(sdata)) 2352 continue; 2353 if (sdata->vif.type == NL80211_IFTYPE_STATION) 2354 ieee80211_sta_restart(sdata); 2355 } 2356 } 2357 2358 /* Passing NULL means an interface is picked for configuration */ 2359 if (local->virt_monitors > 0 && 2360 local->virt_monitors == local->open_count) 2361 ieee80211_add_virtual_monitor(local, NULL); 2362 2363 if (!suspended) 2364 return 0; 2365 2366 #ifdef CONFIG_PM 2367 /* first set suspended false, then resuming */ 2368 local->suspended = false; 2369 mb(); 2370 local->resuming = false; 2371 2372 ieee80211_flush_completed_scan(local, false); 2373 2374 if (local->open_count && !reconfig_due_to_wowlan) 2375 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND); 2376 2377 list_for_each_entry(sdata, &local->interfaces, list) { 2378 if (!ieee80211_sdata_running(sdata)) 2379 continue; 2380 if (sdata->vif.type == NL80211_IFTYPE_STATION) 2381 ieee80211_sta_restart(sdata); 2382 } 2383 2384 mod_timer(&local->sta_cleanup, jiffies + 1); 2385 #else 2386 WARN_ON(1); 2387 #endif 2388 2389 return 0; 2390 } 2391 2392 static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag) 2393 { 2394 struct ieee80211_sub_if_data *sdata; 2395 struct ieee80211_local *local; 2396 struct ieee80211_key *key; 2397 2398 if (WARN_ON(!vif)) 2399 return; 2400 2401 sdata = vif_to_sdata(vif); 2402 local = sdata->local; 2403 2404 lockdep_assert_wiphy(local->hw.wiphy); 2405 2406 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME && 2407 !local->resuming)) 2408 return; 2409 2410 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART && 2411 !local->in_reconfig)) 2412 return; 2413 2414 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) 2415 return; 2416 2417 sdata->flags |= flag; 2418 2419 list_for_each_entry(key, &sdata->key_list, list) 2420 key->flags |= KEY_FLAG_TAINTED; 2421 } 2422 2423 void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif) 2424 { 2425 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART); 2426 } 2427 EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect); 2428 2429 void ieee80211_resume_disconnect(struct ieee80211_vif *vif) 2430 { 2431 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME); 2432 } 2433 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); 2434 2435 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, 2436 struct ieee80211_link_data *link) 2437 { 2438 struct ieee80211_local *local = sdata->local; 2439 struct ieee80211_chanctx_conf *chanctx_conf; 2440 struct ieee80211_chanctx *chanctx; 2441 2442 lockdep_assert_wiphy(local->hw.wiphy); 2443 2444 chanctx_conf = rcu_dereference_protected(link->conf->chanctx_conf, 2445 lockdep_is_held(&local->hw.wiphy->mtx)); 2446 2447 /* 2448 * This function can be called from a work, thus it may be possible 2449 * that the chanctx_conf is removed (due to a disconnection, for 2450 * example). 2451 * So nothing should be done in such case. 2452 */ 2453 if (!chanctx_conf) 2454 return; 2455 2456 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 2457 ieee80211_recalc_smps_chanctx(local, chanctx); 2458 } 2459 2460 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, 2461 int link_id) 2462 { 2463 struct ieee80211_local *local = sdata->local; 2464 struct ieee80211_chanctx_conf *chanctx_conf; 2465 struct ieee80211_chanctx *chanctx; 2466 int i; 2467 2468 lockdep_assert_wiphy(local->hw.wiphy); 2469 2470 for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) { 2471 struct ieee80211_bss_conf *bss_conf; 2472 2473 if (link_id >= 0 && link_id != i) 2474 continue; 2475 2476 rcu_read_lock(); 2477 bss_conf = rcu_dereference(sdata->vif.link_conf[i]); 2478 if (!bss_conf) { 2479 rcu_read_unlock(); 2480 continue; 2481 } 2482 2483 chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf, 2484 lockdep_is_held(&local->hw.wiphy->mtx)); 2485 /* 2486 * Since we hold the wiphy mutex (checked above) 2487 * we can take the chanctx_conf pointer out of the 2488 * RCU critical section, it cannot go away without 2489 * the mutex. Just the way we reached it could - in 2490 * theory - go away, but we don't really care and 2491 * it really shouldn't happen anyway. 2492 */ 2493 rcu_read_unlock(); 2494 2495 if (!chanctx_conf) 2496 return; 2497 2498 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, 2499 conf); 2500 ieee80211_recalc_chanctx_min_def(local, chanctx); 2501 } 2502 } 2503 2504 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) 2505 { 2506 size_t pos = offset; 2507 2508 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) 2509 pos += 2 + ies[pos + 1]; 2510 2511 return pos; 2512 } 2513 2514 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2515 u16 cap) 2516 { 2517 __le16 tmp; 2518 2519 *pos++ = WLAN_EID_HT_CAPABILITY; 2520 *pos++ = sizeof(struct ieee80211_ht_cap); 2521 memset(pos, 0, sizeof(struct ieee80211_ht_cap)); 2522 2523 /* capability flags */ 2524 tmp = cpu_to_le16(cap); 2525 memcpy(pos, &tmp, sizeof(u16)); 2526 pos += sizeof(u16); 2527 2528 /* AMPDU parameters */ 2529 *pos++ = ht_cap->ampdu_factor | 2530 (ht_cap->ampdu_density << 2531 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); 2532 2533 /* MCS set */ 2534 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); 2535 pos += sizeof(ht_cap->mcs); 2536 2537 /* extended capabilities */ 2538 pos += sizeof(__le16); 2539 2540 /* BF capabilities */ 2541 pos += sizeof(__le32); 2542 2543 /* antenna selection */ 2544 pos += sizeof(u8); 2545 2546 return pos; 2547 } 2548 2549 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2550 u32 cap) 2551 { 2552 __le32 tmp; 2553 2554 *pos++ = WLAN_EID_VHT_CAPABILITY; 2555 *pos++ = sizeof(struct ieee80211_vht_cap); 2556 memset(pos, 0, sizeof(struct ieee80211_vht_cap)); 2557 2558 /* capability flags */ 2559 tmp = cpu_to_le32(cap); 2560 memcpy(pos, &tmp, sizeof(u32)); 2561 pos += sizeof(u32); 2562 2563 /* VHT MCS set */ 2564 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); 2565 pos += sizeof(vht_cap->vht_mcs); 2566 2567 return pos; 2568 } 2569 2570 /* this may return more than ieee80211_put_he_6ghz_cap() will need */ 2571 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata) 2572 { 2573 const struct ieee80211_sta_he_cap *he_cap; 2574 struct ieee80211_supported_band *sband; 2575 u8 n; 2576 2577 sband = ieee80211_get_sband(sdata); 2578 if (!sband) 2579 return 0; 2580 2581 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 2582 if (!he_cap) 2583 return 0; 2584 2585 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem); 2586 return 2 + 1 + 2587 sizeof(he_cap->he_cap_elem) + n + 2588 ieee80211_he_ppe_size(he_cap->ppe_thres[0], 2589 he_cap->he_cap_elem.phy_cap_info); 2590 } 2591 2592 static void 2593 ieee80211_get_adjusted_he_cap(const struct ieee80211_conn_settings *conn, 2594 const struct ieee80211_sta_he_cap *he_cap, 2595 struct ieee80211_he_cap_elem *elem) 2596 { 2597 u8 ru_limit, max_ru; 2598 2599 *elem = he_cap->he_cap_elem; 2600 2601 switch (conn->bw_limit) { 2602 case IEEE80211_CONN_BW_LIMIT_20: 2603 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242; 2604 break; 2605 case IEEE80211_CONN_BW_LIMIT_40: 2606 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484; 2607 break; 2608 case IEEE80211_CONN_BW_LIMIT_80: 2609 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996; 2610 break; 2611 default: 2612 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996; 2613 break; 2614 } 2615 2616 max_ru = elem->phy_cap_info[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK; 2617 max_ru = min(max_ru, ru_limit); 2618 elem->phy_cap_info[8] &= ~IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK; 2619 elem->phy_cap_info[8] |= max_ru; 2620 2621 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_40) { 2622 elem->phy_cap_info[0] &= 2623 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G | 2624 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G); 2625 elem->phy_cap_info[9] &= 2626 ~IEEE80211_HE_PHY_CAP9_LONGER_THAN_16_SIGB_OFDM_SYM; 2627 } 2628 2629 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) { 2630 elem->phy_cap_info[0] &= 2631 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G | 2632 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G); 2633 elem->phy_cap_info[5] &= 2634 ~IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ_MASK; 2635 elem->phy_cap_info[7] &= 2636 ~(IEEE80211_HE_PHY_CAP7_STBC_TX_ABOVE_80MHZ | 2637 IEEE80211_HE_PHY_CAP7_STBC_RX_ABOVE_80MHZ); 2638 } 2639 } 2640 2641 int ieee80211_put_he_cap(struct sk_buff *skb, 2642 struct ieee80211_sub_if_data *sdata, 2643 const struct ieee80211_supported_band *sband, 2644 const struct ieee80211_conn_settings *conn) 2645 { 2646 const struct ieee80211_sta_he_cap *he_cap; 2647 struct ieee80211_he_cap_elem elem; 2648 u8 *len; 2649 u8 n; 2650 u8 ie_len; 2651 2652 if (!conn) 2653 conn = &ieee80211_conn_settings_unlimited; 2654 2655 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 2656 if (!he_cap) 2657 return 0; 2658 2659 /* modify on stack first to calculate 'n' and 'ie_len' correctly */ 2660 ieee80211_get_adjusted_he_cap(conn, he_cap, &elem); 2661 2662 n = ieee80211_he_mcs_nss_size(&elem); 2663 ie_len = 2 + 1 + 2664 sizeof(he_cap->he_cap_elem) + n + 2665 ieee80211_he_ppe_size(he_cap->ppe_thres[0], 2666 he_cap->he_cap_elem.phy_cap_info); 2667 2668 if (skb_tailroom(skb) < ie_len) 2669 return -ENOBUFS; 2670 2671 skb_put_u8(skb, WLAN_EID_EXTENSION); 2672 len = skb_put(skb, 1); /* We'll set the size later below */ 2673 skb_put_u8(skb, WLAN_EID_EXT_HE_CAPABILITY); 2674 2675 /* Fixed data */ 2676 skb_put_data(skb, &elem, sizeof(elem)); 2677 2678 skb_put_data(skb, &he_cap->he_mcs_nss_supp, n); 2679 2680 /* Check if PPE Threshold should be present */ 2681 if ((he_cap->he_cap_elem.phy_cap_info[6] & 2682 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0) 2683 goto end; 2684 2685 /* 2686 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm: 2687 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK) 2688 */ 2689 n = hweight8(he_cap->ppe_thres[0] & 2690 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK); 2691 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >> 2692 IEEE80211_PPE_THRES_NSS_POS)); 2693 2694 /* 2695 * Each pair is 6 bits, and we need to add the 7 "header" bits to the 2696 * total size. 2697 */ 2698 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7; 2699 n = DIV_ROUND_UP(n, 8); 2700 2701 /* Copy PPE Thresholds */ 2702 skb_put_data(skb, &he_cap->ppe_thres, n); 2703 2704 end: 2705 *len = skb_tail_pointer(skb) - len - 1; 2706 return 0; 2707 } 2708 2709 int ieee80211_put_reg_conn(struct sk_buff *skb, 2710 enum ieee80211_channel_flags flags) 2711 { 2712 u8 reg_conn = IEEE80211_REG_CONN_LPI_VALID | 2713 IEEE80211_REG_CONN_LPI_VALUE | 2714 IEEE80211_REG_CONN_SP_VALID; 2715 2716 if (!(flags & IEEE80211_CHAN_NO_6GHZ_AFC_CLIENT)) 2717 reg_conn |= IEEE80211_REG_CONN_SP_VALUE; 2718 2719 skb_put_u8(skb, WLAN_EID_EXTENSION); 2720 skb_put_u8(skb, 1 + sizeof(reg_conn)); 2721 skb_put_u8(skb, WLAN_EID_EXT_NON_AP_STA_REG_CON); 2722 skb_put_u8(skb, reg_conn); 2723 return 0; 2724 } 2725 2726 int ieee80211_put_he_6ghz_cap(struct sk_buff *skb, 2727 struct ieee80211_sub_if_data *sdata, 2728 enum ieee80211_smps_mode smps_mode) 2729 { 2730 struct ieee80211_supported_band *sband; 2731 const struct ieee80211_sband_iftype_data *iftd; 2732 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif); 2733 __le16 cap; 2734 2735 if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy, 2736 BIT(NL80211_BAND_6GHZ), 2737 IEEE80211_CHAN_NO_HE)) 2738 return 0; 2739 2740 sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ]; 2741 2742 iftd = ieee80211_get_sband_iftype_data(sband, iftype); 2743 if (!iftd) 2744 return 0; 2745 2746 /* Check for device HE 6 GHz capability before adding element */ 2747 if (!iftd->he_6ghz_capa.capa) 2748 return 0; 2749 2750 cap = iftd->he_6ghz_capa.capa; 2751 cap &= cpu_to_le16(~IEEE80211_HE_6GHZ_CAP_SM_PS); 2752 2753 switch (smps_mode) { 2754 case IEEE80211_SMPS_AUTOMATIC: 2755 case IEEE80211_SMPS_NUM_MODES: 2756 WARN_ON(1); 2757 fallthrough; 2758 case IEEE80211_SMPS_OFF: 2759 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED, 2760 IEEE80211_HE_6GHZ_CAP_SM_PS); 2761 break; 2762 case IEEE80211_SMPS_STATIC: 2763 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC, 2764 IEEE80211_HE_6GHZ_CAP_SM_PS); 2765 break; 2766 case IEEE80211_SMPS_DYNAMIC: 2767 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC, 2768 IEEE80211_HE_6GHZ_CAP_SM_PS); 2769 break; 2770 } 2771 2772 if (skb_tailroom(skb) < 2 + 1 + sizeof(cap)) 2773 return -ENOBUFS; 2774 2775 skb_put_u8(skb, WLAN_EID_EXTENSION); 2776 skb_put_u8(skb, 1 + sizeof(cap)); 2777 skb_put_u8(skb, WLAN_EID_EXT_HE_6GHZ_CAPA); 2778 skb_put_data(skb, &cap, sizeof(cap)); 2779 return 0; 2780 } 2781 2782 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2783 const struct cfg80211_chan_def *chandef, 2784 u16 prot_mode, bool rifs_mode) 2785 { 2786 struct ieee80211_ht_operation *ht_oper; 2787 /* Build HT Information */ 2788 *pos++ = WLAN_EID_HT_OPERATION; 2789 *pos++ = sizeof(struct ieee80211_ht_operation); 2790 ht_oper = (struct ieee80211_ht_operation *)pos; 2791 ht_oper->primary_chan = ieee80211_frequency_to_channel( 2792 chandef->chan->center_freq); 2793 switch (chandef->width) { 2794 case NL80211_CHAN_WIDTH_160: 2795 case NL80211_CHAN_WIDTH_80P80: 2796 case NL80211_CHAN_WIDTH_80: 2797 case NL80211_CHAN_WIDTH_40: 2798 if (chandef->center_freq1 > chandef->chan->center_freq) 2799 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 2800 else 2801 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 2802 break; 2803 case NL80211_CHAN_WIDTH_320: 2804 /* HT information element should not be included on 6GHz */ 2805 WARN_ON(1); 2806 return pos; 2807 default: 2808 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; 2809 break; 2810 } 2811 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 2812 chandef->width != NL80211_CHAN_WIDTH_20_NOHT && 2813 chandef->width != NL80211_CHAN_WIDTH_20) 2814 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; 2815 2816 if (rifs_mode) 2817 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE; 2818 2819 ht_oper->operation_mode = cpu_to_le16(prot_mode); 2820 ht_oper->stbc_param = 0x0000; 2821 2822 /* It seems that Basic MCS set and Supported MCS set 2823 are identical for the first 10 bytes */ 2824 memset(&ht_oper->basic_set, 0, 16); 2825 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); 2826 2827 return pos + sizeof(struct ieee80211_ht_operation); 2828 } 2829 2830 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2831 const struct cfg80211_chan_def *chandef) 2832 { 2833 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */ 2834 *pos++ = 3; /* IE length */ 2835 /* New channel width */ 2836 switch (chandef->width) { 2837 case NL80211_CHAN_WIDTH_80: 2838 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ; 2839 break; 2840 case NL80211_CHAN_WIDTH_160: 2841 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ; 2842 break; 2843 case NL80211_CHAN_WIDTH_80P80: 2844 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ; 2845 break; 2846 case NL80211_CHAN_WIDTH_320: 2847 /* The behavior is not defined for 320 MHz channels */ 2848 WARN_ON(1); 2849 fallthrough; 2850 default: 2851 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT; 2852 } 2853 2854 /* new center frequency segment 0 */ 2855 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1); 2856 /* new center frequency segment 1 */ 2857 if (chandef->center_freq2) 2858 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2); 2859 else 2860 *pos++ = 0; 2861 } 2862 2863 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2864 const struct cfg80211_chan_def *chandef) 2865 { 2866 struct ieee80211_vht_operation *vht_oper; 2867 2868 *pos++ = WLAN_EID_VHT_OPERATION; 2869 *pos++ = sizeof(struct ieee80211_vht_operation); 2870 vht_oper = (struct ieee80211_vht_operation *)pos; 2871 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel( 2872 chandef->center_freq1); 2873 if (chandef->center_freq2) 2874 vht_oper->center_freq_seg1_idx = 2875 ieee80211_frequency_to_channel(chandef->center_freq2); 2876 else 2877 vht_oper->center_freq_seg1_idx = 0x00; 2878 2879 switch (chandef->width) { 2880 case NL80211_CHAN_WIDTH_160: 2881 /* 2882 * Convert 160 MHz channel width to new style as interop 2883 * workaround. 2884 */ 2885 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2886 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx; 2887 if (chandef->chan->center_freq < chandef->center_freq1) 2888 vht_oper->center_freq_seg0_idx -= 8; 2889 else 2890 vht_oper->center_freq_seg0_idx += 8; 2891 break; 2892 case NL80211_CHAN_WIDTH_80P80: 2893 /* 2894 * Convert 80+80 MHz channel width to new style as interop 2895 * workaround. 2896 */ 2897 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2898 break; 2899 case NL80211_CHAN_WIDTH_80: 2900 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2901 break; 2902 case NL80211_CHAN_WIDTH_320: 2903 /* VHT information element should not be included on 6GHz */ 2904 WARN_ON(1); 2905 return pos; 2906 default: 2907 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; 2908 break; 2909 } 2910 2911 /* don't require special VHT peer rates */ 2912 vht_oper->basic_mcs_set = cpu_to_le16(0xffff); 2913 2914 return pos + sizeof(struct ieee80211_vht_operation); 2915 } 2916 2917 u8 *ieee80211_ie_build_he_oper(u8 *pos, const struct cfg80211_chan_def *chandef) 2918 { 2919 struct ieee80211_he_operation *he_oper; 2920 struct ieee80211_he_6ghz_oper *he_6ghz_op; 2921 struct cfg80211_chan_def he_chandef; 2922 u32 he_oper_params; 2923 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation); 2924 2925 if (chandef->chan->band == NL80211_BAND_6GHZ) 2926 ie_len += sizeof(struct ieee80211_he_6ghz_oper); 2927 2928 *pos++ = WLAN_EID_EXTENSION; 2929 *pos++ = ie_len; 2930 *pos++ = WLAN_EID_EXT_HE_OPERATION; 2931 2932 he_oper_params = 0; 2933 he_oper_params |= u32_encode_bits(1023, /* disabled */ 2934 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK); 2935 he_oper_params |= u32_encode_bits(1, 2936 IEEE80211_HE_OPERATION_ER_SU_DISABLE); 2937 he_oper_params |= u32_encode_bits(1, 2938 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED); 2939 if (chandef->chan->band == NL80211_BAND_6GHZ) 2940 he_oper_params |= u32_encode_bits(1, 2941 IEEE80211_HE_OPERATION_6GHZ_OP_INFO); 2942 2943 he_oper = (struct ieee80211_he_operation *)pos; 2944 he_oper->he_oper_params = cpu_to_le32(he_oper_params); 2945 2946 /* don't require special HE peer rates */ 2947 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff); 2948 pos += sizeof(struct ieee80211_he_operation); 2949 2950 if (chandef->chan->band != NL80211_BAND_6GHZ) 2951 goto out; 2952 2953 cfg80211_chandef_create(&he_chandef, chandef->chan, NL80211_CHAN_NO_HT); 2954 he_chandef.center_freq1 = chandef->center_freq1; 2955 he_chandef.center_freq2 = chandef->center_freq2; 2956 he_chandef.width = chandef->width; 2957 2958 /* TODO add VHT operational */ 2959 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos; 2960 he_6ghz_op->minrate = 6; /* 6 Mbps */ 2961 he_6ghz_op->primary = 2962 ieee80211_frequency_to_channel(he_chandef.chan->center_freq); 2963 he_6ghz_op->ccfs0 = 2964 ieee80211_frequency_to_channel(he_chandef.center_freq1); 2965 if (he_chandef.center_freq2) 2966 he_6ghz_op->ccfs1 = 2967 ieee80211_frequency_to_channel(he_chandef.center_freq2); 2968 else 2969 he_6ghz_op->ccfs1 = 0; 2970 2971 switch (he_chandef.width) { 2972 case NL80211_CHAN_WIDTH_320: 2973 /* Downgrade EHT 320 MHz BW to 160 MHz for HE and set new 2974 * center_freq1 2975 */ 2976 ieee80211_chandef_downgrade(&he_chandef, NULL); 2977 he_6ghz_op->ccfs0 = 2978 ieee80211_frequency_to_channel(he_chandef.center_freq1); 2979 fallthrough; 2980 case NL80211_CHAN_WIDTH_160: 2981 /* Convert 160 MHz channel width to new style as interop 2982 * workaround. 2983 */ 2984 he_6ghz_op->control = 2985 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; 2986 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0; 2987 if (he_chandef.chan->center_freq < he_chandef.center_freq1) 2988 he_6ghz_op->ccfs0 -= 8; 2989 else 2990 he_6ghz_op->ccfs0 += 8; 2991 fallthrough; 2992 case NL80211_CHAN_WIDTH_80P80: 2993 he_6ghz_op->control = 2994 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; 2995 break; 2996 case NL80211_CHAN_WIDTH_80: 2997 he_6ghz_op->control = 2998 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ; 2999 break; 3000 case NL80211_CHAN_WIDTH_40: 3001 he_6ghz_op->control = 3002 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ; 3003 break; 3004 default: 3005 he_6ghz_op->control = 3006 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ; 3007 break; 3008 } 3009 3010 pos += sizeof(struct ieee80211_he_6ghz_oper); 3011 3012 out: 3013 return pos; 3014 } 3015 3016 u8 *ieee80211_ie_build_eht_oper(u8 *pos, const struct cfg80211_chan_def *chandef, 3017 const struct ieee80211_sta_eht_cap *eht_cap) 3018 3019 { 3020 const struct ieee80211_eht_mcs_nss_supp_20mhz_only *eht_mcs_nss = 3021 &eht_cap->eht_mcs_nss_supp.only_20mhz; 3022 struct ieee80211_eht_operation *eht_oper; 3023 struct ieee80211_eht_operation_info *eht_oper_info; 3024 u8 eht_oper_len = offsetof(struct ieee80211_eht_operation, optional); 3025 u8 eht_oper_info_len = 3026 offsetof(struct ieee80211_eht_operation_info, optional); 3027 u8 chan_width = 0; 3028 3029 *pos++ = WLAN_EID_EXTENSION; 3030 *pos++ = 1 + eht_oper_len + eht_oper_info_len; 3031 *pos++ = WLAN_EID_EXT_EHT_OPERATION; 3032 3033 eht_oper = (struct ieee80211_eht_operation *)pos; 3034 3035 memcpy(&eht_oper->basic_mcs_nss, eht_mcs_nss, sizeof(*eht_mcs_nss)); 3036 eht_oper->params |= IEEE80211_EHT_OPER_INFO_PRESENT; 3037 pos += eht_oper_len; 3038 3039 eht_oper_info = 3040 (struct ieee80211_eht_operation_info *)eht_oper->optional; 3041 3042 eht_oper_info->ccfs0 = 3043 ieee80211_frequency_to_channel(chandef->center_freq1); 3044 if (chandef->center_freq2) 3045 eht_oper_info->ccfs1 = 3046 ieee80211_frequency_to_channel(chandef->center_freq2); 3047 else 3048 eht_oper_info->ccfs1 = 0; 3049 3050 switch (chandef->width) { 3051 case NL80211_CHAN_WIDTH_320: 3052 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ; 3053 eht_oper_info->ccfs1 = eht_oper_info->ccfs0; 3054 if (chandef->chan->center_freq < chandef->center_freq1) 3055 eht_oper_info->ccfs0 -= 16; 3056 else 3057 eht_oper_info->ccfs0 += 16; 3058 break; 3059 case NL80211_CHAN_WIDTH_160: 3060 eht_oper_info->ccfs1 = eht_oper_info->ccfs0; 3061 if (chandef->chan->center_freq < chandef->center_freq1) 3062 eht_oper_info->ccfs0 -= 8; 3063 else 3064 eht_oper_info->ccfs0 += 8; 3065 fallthrough; 3066 case NL80211_CHAN_WIDTH_80P80: 3067 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ; 3068 break; 3069 case NL80211_CHAN_WIDTH_80: 3070 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ; 3071 break; 3072 case NL80211_CHAN_WIDTH_40: 3073 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ; 3074 break; 3075 default: 3076 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ; 3077 break; 3078 } 3079 eht_oper_info->control = chan_width; 3080 pos += eht_oper_info_len; 3081 3082 /* TODO: eht_oper_info->optional */ 3083 3084 return pos; 3085 } 3086 3087 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 3088 struct cfg80211_chan_def *chandef) 3089 { 3090 enum nl80211_channel_type channel_type; 3091 3092 if (!ht_oper) 3093 return false; 3094 3095 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { 3096 case IEEE80211_HT_PARAM_CHA_SEC_NONE: 3097 channel_type = NL80211_CHAN_HT20; 3098 break; 3099 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: 3100 channel_type = NL80211_CHAN_HT40PLUS; 3101 break; 3102 case IEEE80211_HT_PARAM_CHA_SEC_BELOW: 3103 channel_type = NL80211_CHAN_HT40MINUS; 3104 break; 3105 default: 3106 return false; 3107 } 3108 3109 cfg80211_chandef_create(chandef, chandef->chan, channel_type); 3110 return true; 3111 } 3112 3113 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 3114 const struct ieee80211_vht_operation *oper, 3115 const struct ieee80211_ht_operation *htop, 3116 struct cfg80211_chan_def *chandef) 3117 { 3118 struct cfg80211_chan_def new = *chandef; 3119 int cf0, cf1; 3120 int ccfs0, ccfs1, ccfs2; 3121 int ccf0, ccf1; 3122 u32 vht_cap; 3123 bool support_80_80 = false; 3124 bool support_160 = false; 3125 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info, 3126 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK); 3127 u8 supp_chwidth = u32_get_bits(vht_cap_info, 3128 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK); 3129 3130 if (!oper || !htop) 3131 return false; 3132 3133 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap; 3134 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK | 3135 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)); 3136 support_80_80 = ((vht_cap & 3137 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) || 3138 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ && 3139 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) || 3140 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >> 3141 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1)); 3142 ccfs0 = oper->center_freq_seg0_idx; 3143 ccfs1 = oper->center_freq_seg1_idx; 3144 ccfs2 = (le16_to_cpu(htop->operation_mode) & 3145 IEEE80211_HT_OP_MODE_CCFS2_MASK) 3146 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT; 3147 3148 ccf0 = ccfs0; 3149 3150 /* if not supported, parse as though we didn't understand it */ 3151 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW)) 3152 ext_nss_bw_supp = 0; 3153 3154 /* 3155 * Cf. IEEE 802.11-2020 Table 9-272 - Setting of the Supported Channel 3156 * Width Set subfield and Extended NSS BW Support subfield at a STA 3157 * transmitting the VHT Capabilities Information field 3158 * 3159 * We really just consider that because it's inefficient to connect 3160 * at a higher bandwidth than we'll actually be able to use. 3161 */ 3162 switch ((supp_chwidth << 4) | ext_nss_bw_supp) { 3163 default: 3164 case 0x00: 3165 ccf1 = 0; 3166 support_160 = false; 3167 support_80_80 = false; 3168 break; 3169 case 0x01: 3170 support_80_80 = false; 3171 fallthrough; 3172 case 0x02: 3173 case 0x03: 3174 ccf1 = ccfs2; 3175 break; 3176 case 0x10: 3177 ccf1 = ccfs1; 3178 break; 3179 case 0x11: 3180 case 0x12: 3181 if (!ccfs1) 3182 ccf1 = ccfs2; 3183 else 3184 ccf1 = ccfs1; 3185 break; 3186 case 0x13: 3187 case 0x20: 3188 case 0x23: 3189 ccf1 = ccfs1; 3190 break; 3191 } 3192 3193 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band); 3194 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band); 3195 3196 switch (oper->chan_width) { 3197 case IEEE80211_VHT_CHANWIDTH_USE_HT: 3198 /* just use HT information directly */ 3199 break; 3200 case IEEE80211_VHT_CHANWIDTH_80MHZ: 3201 new.width = NL80211_CHAN_WIDTH_80; 3202 new.center_freq1 = cf0; 3203 /* If needed, adjust based on the newer interop workaround. */ 3204 if (ccf1) { 3205 unsigned int diff; 3206 3207 diff = abs(ccf1 - ccf0); 3208 if ((diff == 8) && support_160) { 3209 new.width = NL80211_CHAN_WIDTH_160; 3210 new.center_freq1 = cf1; 3211 } else if ((diff > 8) && support_80_80) { 3212 new.width = NL80211_CHAN_WIDTH_80P80; 3213 new.center_freq2 = cf1; 3214 } 3215 } 3216 break; 3217 case IEEE80211_VHT_CHANWIDTH_160MHZ: 3218 /* deprecated encoding */ 3219 new.width = NL80211_CHAN_WIDTH_160; 3220 new.center_freq1 = cf0; 3221 break; 3222 case IEEE80211_VHT_CHANWIDTH_80P80MHZ: 3223 /* deprecated encoding */ 3224 new.width = NL80211_CHAN_WIDTH_80P80; 3225 new.center_freq1 = cf0; 3226 new.center_freq2 = cf1; 3227 break; 3228 default: 3229 return false; 3230 } 3231 3232 if (!cfg80211_chandef_valid(&new)) 3233 return false; 3234 3235 *chandef = new; 3236 return true; 3237 } 3238 3239 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation_info *info, 3240 struct cfg80211_chan_def *chandef) 3241 { 3242 chandef->center_freq1 = 3243 ieee80211_channel_to_frequency(info->ccfs0, 3244 chandef->chan->band); 3245 3246 switch (u8_get_bits(info->control, 3247 IEEE80211_EHT_OPER_CHAN_WIDTH)) { 3248 case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ: 3249 chandef->width = NL80211_CHAN_WIDTH_20; 3250 break; 3251 case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ: 3252 chandef->width = NL80211_CHAN_WIDTH_40; 3253 break; 3254 case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ: 3255 chandef->width = NL80211_CHAN_WIDTH_80; 3256 break; 3257 case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ: 3258 chandef->width = NL80211_CHAN_WIDTH_160; 3259 chandef->center_freq1 = 3260 ieee80211_channel_to_frequency(info->ccfs1, 3261 chandef->chan->band); 3262 break; 3263 case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ: 3264 chandef->width = NL80211_CHAN_WIDTH_320; 3265 chandef->center_freq1 = 3266 ieee80211_channel_to_frequency(info->ccfs1, 3267 chandef->chan->band); 3268 break; 3269 } 3270 } 3271 3272 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_local *local, 3273 const struct ieee80211_he_operation *he_oper, 3274 const struct ieee80211_eht_operation *eht_oper, 3275 struct cfg80211_chan_def *chandef) 3276 { 3277 struct cfg80211_chan_def he_chandef = *chandef; 3278 const struct ieee80211_he_6ghz_oper *he_6ghz_oper; 3279 u32 freq; 3280 3281 if (chandef->chan->band != NL80211_BAND_6GHZ) 3282 return true; 3283 3284 if (!he_oper) 3285 return false; 3286 3287 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper); 3288 if (!he_6ghz_oper) 3289 return false; 3290 3291 /* 3292 * The EHT operation IE does not contain the primary channel so the 3293 * primary channel frequency should be taken from the 6 GHz operation 3294 * information. 3295 */ 3296 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary, 3297 NL80211_BAND_6GHZ); 3298 he_chandef.chan = ieee80211_get_channel(local->hw.wiphy, freq); 3299 3300 if (!he_chandef.chan) 3301 return false; 3302 3303 if (!eht_oper || 3304 !(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) { 3305 switch (u8_get_bits(he_6ghz_oper->control, 3306 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) { 3307 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ: 3308 he_chandef.width = NL80211_CHAN_WIDTH_20; 3309 break; 3310 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ: 3311 he_chandef.width = NL80211_CHAN_WIDTH_40; 3312 break; 3313 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ: 3314 he_chandef.width = NL80211_CHAN_WIDTH_80; 3315 break; 3316 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ: 3317 he_chandef.width = NL80211_CHAN_WIDTH_80; 3318 if (!he_6ghz_oper->ccfs1) 3319 break; 3320 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) 3321 he_chandef.width = NL80211_CHAN_WIDTH_160; 3322 else 3323 he_chandef.width = NL80211_CHAN_WIDTH_80P80; 3324 break; 3325 } 3326 3327 if (he_chandef.width == NL80211_CHAN_WIDTH_160) { 3328 he_chandef.center_freq1 = 3329 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, 3330 NL80211_BAND_6GHZ); 3331 } else { 3332 he_chandef.center_freq1 = 3333 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0, 3334 NL80211_BAND_6GHZ); 3335 he_chandef.center_freq2 = 3336 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, 3337 NL80211_BAND_6GHZ); 3338 } 3339 } else { 3340 ieee80211_chandef_eht_oper((const void *)eht_oper->optional, 3341 &he_chandef); 3342 he_chandef.punctured = 3343 ieee80211_eht_oper_dis_subchan_bitmap(eht_oper); 3344 } 3345 3346 if (!cfg80211_chandef_valid(&he_chandef)) 3347 return false; 3348 3349 *chandef = he_chandef; 3350 3351 return true; 3352 } 3353 3354 bool ieee80211_chandef_s1g_oper(struct ieee80211_local *local, 3355 const struct ieee80211_s1g_oper_ie *oper, 3356 struct cfg80211_chan_def *chandef) 3357 { 3358 u32 oper_khz, pri_1mhz_khz, pri_2mhz_khz; 3359 3360 if (!oper) 3361 return false; 3362 3363 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) { 3364 case IEEE80211_S1G_CHANWIDTH_1MHZ: 3365 chandef->width = NL80211_CHAN_WIDTH_1; 3366 break; 3367 case IEEE80211_S1G_CHANWIDTH_2MHZ: 3368 chandef->width = NL80211_CHAN_WIDTH_2; 3369 break; 3370 case IEEE80211_S1G_CHANWIDTH_4MHZ: 3371 chandef->width = NL80211_CHAN_WIDTH_4; 3372 break; 3373 case IEEE80211_S1G_CHANWIDTH_8MHZ: 3374 chandef->width = NL80211_CHAN_WIDTH_8; 3375 break; 3376 case IEEE80211_S1G_CHANWIDTH_16MHZ: 3377 chandef->width = NL80211_CHAN_WIDTH_16; 3378 break; 3379 default: 3380 return false; 3381 } 3382 3383 chandef->s1g_primary_2mhz = false; 3384 3385 switch (u8_get_bits(oper->ch_width, S1G_OPER_CH_WIDTH_PRIMARY)) { 3386 case IEEE80211_S1G_PRI_CHANWIDTH_1MHZ: 3387 pri_1mhz_khz = ieee80211_channel_to_freq_khz( 3388 oper->primary_ch, NL80211_BAND_S1GHZ); 3389 break; 3390 case IEEE80211_S1G_PRI_CHANWIDTH_2MHZ: 3391 chandef->s1g_primary_2mhz = true; 3392 pri_2mhz_khz = ieee80211_channel_to_freq_khz( 3393 oper->primary_ch, NL80211_BAND_S1GHZ); 3394 3395 if (u8_get_bits(oper->ch_width, S1G_OPER_CH_PRIMARY_LOCATION) == 3396 S1G_2M_PRIMARY_LOCATION_LOWER) 3397 pri_1mhz_khz = pri_2mhz_khz - 500; 3398 else 3399 pri_1mhz_khz = pri_2mhz_khz + 500; 3400 break; 3401 default: 3402 return false; 3403 } 3404 3405 oper_khz = ieee80211_channel_to_freq_khz(oper->oper_ch, 3406 NL80211_BAND_S1GHZ); 3407 chandef->center_freq1 = KHZ_TO_MHZ(oper_khz); 3408 chandef->freq1_offset = oper_khz % 1000; 3409 chandef->chan = 3410 ieee80211_get_channel_khz(local->hw.wiphy, pri_1mhz_khz); 3411 3412 return chandef->chan; 3413 } 3414 3415 int ieee80211_put_srates_elem(struct sk_buff *skb, 3416 const struct ieee80211_supported_band *sband, 3417 u32 basic_rates, u32 masked_rates, 3418 u8 element_id) 3419 { 3420 u8 i, rates, skip; 3421 3422 rates = 0; 3423 for (i = 0; i < sband->n_bitrates; i++) { 3424 if (masked_rates & BIT(i)) 3425 continue; 3426 rates++; 3427 } 3428 3429 if (element_id == WLAN_EID_SUPP_RATES) { 3430 rates = min_t(u8, rates, 8); 3431 skip = 0; 3432 } else { 3433 skip = 8; 3434 if (rates <= skip) 3435 return 0; 3436 rates -= skip; 3437 } 3438 3439 if (skb_tailroom(skb) < rates + 2) 3440 return -ENOBUFS; 3441 3442 skb_put_u8(skb, element_id); 3443 skb_put_u8(skb, rates); 3444 3445 for (i = 0; i < sband->n_bitrates && rates; i++) { 3446 int rate; 3447 u8 basic; 3448 3449 if (masked_rates & BIT(i)) 3450 continue; 3451 3452 if (skip > 0) { 3453 skip--; 3454 continue; 3455 } 3456 3457 basic = basic_rates & BIT(i) ? 0x80 : 0; 3458 3459 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 5); 3460 skb_put_u8(skb, basic | (u8)rate); 3461 rates--; 3462 } 3463 3464 WARN(rates > 0, "rates confused: rates:%d, element:%d\n", 3465 rates, element_id); 3466 3467 return 0; 3468 } 3469 3470 int ieee80211_ave_rssi(struct ieee80211_vif *vif, int link_id) 3471 { 3472 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3473 struct ieee80211_link_data *link_data; 3474 3475 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 3476 return 0; 3477 3478 if (link_id < 0) 3479 link_data = &sdata->deflink; 3480 else 3481 link_data = wiphy_dereference(sdata->local->hw.wiphy, 3482 sdata->link[link_id]); 3483 3484 if (WARN_ON_ONCE(!link_data)) 3485 return -99; 3486 3487 return -ewma_beacon_signal_read(&link_data->u.mgd.ave_beacon_signal); 3488 } 3489 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); 3490 3491 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) 3492 { 3493 if (!mcs) 3494 return 1; 3495 3496 /* TODO: consider rx_highest */ 3497 3498 if (mcs->rx_mask[3]) 3499 return 4; 3500 if (mcs->rx_mask[2]) 3501 return 3; 3502 if (mcs->rx_mask[1]) 3503 return 2; 3504 return 1; 3505 } 3506 3507 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_hw *hw, 3508 struct ieee80211_rx_status *status, 3509 unsigned int mpdu_len, 3510 unsigned int mpdu_offset) 3511 { 3512 u64 ts = status->mactime; 3513 bool mactime_plcp_start; 3514 struct rate_info ri; 3515 u16 rate; 3516 u8 n_ltf; 3517 3518 if (WARN_ON(!ieee80211_have_rx_timestamp(status))) 3519 return 0; 3520 3521 mactime_plcp_start = (status->flag & RX_FLAG_MACTIME) == 3522 RX_FLAG_MACTIME_PLCP_START; 3523 3524 memset(&ri, 0, sizeof(ri)); 3525 3526 ri.bw = status->bw; 3527 3528 /* Fill cfg80211 rate info */ 3529 switch (status->encoding) { 3530 case RX_ENC_EHT: 3531 ri.flags |= RATE_INFO_FLAGS_EHT_MCS; 3532 ri.mcs = status->rate_idx; 3533 ri.nss = status->nss; 3534 ri.eht_ru_alloc = status->eht.ru; 3535 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3536 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3537 /* TODO/FIXME: is this right? handle other PPDUs */ 3538 if (mactime_plcp_start) { 3539 mpdu_offset += 2; 3540 ts += 36; 3541 } 3542 break; 3543 case RX_ENC_HE: 3544 ri.flags |= RATE_INFO_FLAGS_HE_MCS; 3545 ri.mcs = status->rate_idx; 3546 ri.nss = status->nss; 3547 ri.he_ru_alloc = status->he_ru; 3548 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3549 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3550 3551 /* 3552 * See P802.11ax_D6.0, section 27.3.4 for 3553 * VHT PPDU format. 3554 */ 3555 if (mactime_plcp_start) { 3556 mpdu_offset += 2; 3557 ts += 36; 3558 3559 /* 3560 * TODO: 3561 * For HE MU PPDU, add the HE-SIG-B. 3562 * For HE ER PPDU, add 8us for the HE-SIG-A. 3563 * For HE TB PPDU, add 4us for the HE-STF. 3564 * Add the HE-LTF durations - variable. 3565 */ 3566 } 3567 3568 break; 3569 case RX_ENC_HT: 3570 ri.mcs = status->rate_idx; 3571 ri.flags |= RATE_INFO_FLAGS_MCS; 3572 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3573 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3574 3575 /* 3576 * See P802.11REVmd_D3.0, section 19.3.2 for 3577 * HT PPDU format. 3578 */ 3579 if (mactime_plcp_start) { 3580 mpdu_offset += 2; 3581 if (status->enc_flags & RX_ENC_FLAG_HT_GF) 3582 ts += 24; 3583 else 3584 ts += 32; 3585 3586 /* 3587 * Add Data HT-LTFs per streams 3588 * TODO: add Extension HT-LTFs, 4us per LTF 3589 */ 3590 n_ltf = ((ri.mcs >> 3) & 3) + 1; 3591 n_ltf = n_ltf == 3 ? 4 : n_ltf; 3592 ts += n_ltf * 4; 3593 } 3594 3595 break; 3596 case RX_ENC_VHT: 3597 ri.flags |= RATE_INFO_FLAGS_VHT_MCS; 3598 ri.mcs = status->rate_idx; 3599 ri.nss = status->nss; 3600 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3601 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3602 3603 /* 3604 * See P802.11REVmd_D3.0, section 21.3.2 for 3605 * VHT PPDU format. 3606 */ 3607 if (mactime_plcp_start) { 3608 mpdu_offset += 2; 3609 ts += 36; 3610 3611 /* 3612 * Add VHT-LTFs per streams 3613 */ 3614 n_ltf = (ri.nss != 1) && (ri.nss % 2) ? 3615 ri.nss + 1 : ri.nss; 3616 ts += 4 * n_ltf; 3617 } 3618 3619 break; 3620 default: 3621 WARN_ON(1); 3622 fallthrough; 3623 case RX_ENC_LEGACY: { 3624 struct ieee80211_supported_band *sband; 3625 3626 sband = hw->wiphy->bands[status->band]; 3627 ri.legacy = sband->bitrates[status->rate_idx].bitrate; 3628 3629 if (mactime_plcp_start) { 3630 if (status->band == NL80211_BAND_5GHZ) { 3631 ts += 20; 3632 mpdu_offset += 2; 3633 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) { 3634 ts += 96; 3635 } else { 3636 ts += 192; 3637 } 3638 } 3639 break; 3640 } 3641 } 3642 3643 rate = cfg80211_calculate_bitrate(&ri); 3644 if (WARN_ONCE(!rate, 3645 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n", 3646 (unsigned long long)status->flag, status->rate_idx, 3647 status->nss)) 3648 return 0; 3649 3650 /* rewind from end of MPDU */ 3651 if ((status->flag & RX_FLAG_MACTIME) == RX_FLAG_MACTIME_END) 3652 ts -= mpdu_len * 8 * 10 / rate; 3653 3654 ts += mpdu_offset * 8 * 10 / rate; 3655 3656 return ts; 3657 } 3658 EXPORT_SYMBOL_GPL(ieee80211_calculate_rx_timestamp); 3659 3660 /* Cancel CAC for the interfaces under the specified @local. If @ctx is 3661 * also provided, only the interfaces using that ctx will be canceled. 3662 */ 3663 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local, 3664 struct ieee80211_chanctx *ctx) 3665 { 3666 struct ieee80211_sub_if_data *sdata; 3667 struct cfg80211_chan_def chandef; 3668 struct ieee80211_link_data *link; 3669 struct ieee80211_chanctx_conf *chanctx_conf; 3670 unsigned int link_id; 3671 3672 lockdep_assert_wiphy(local->hw.wiphy); 3673 3674 list_for_each_entry(sdata, &local->interfaces, list) { 3675 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; 3676 link_id++) { 3677 link = sdata_dereference(sdata->link[link_id], 3678 sdata); 3679 if (!link) 3680 continue; 3681 3682 chanctx_conf = sdata_dereference(link->conf->chanctx_conf, 3683 sdata); 3684 if (ctx && &ctx->conf != chanctx_conf) 3685 continue; 3686 3687 wiphy_hrtimer_work_cancel(local->hw.wiphy, 3688 &link->dfs_cac_timer_work); 3689 3690 if (!sdata->wdev.links[link_id].cac_started) 3691 continue; 3692 3693 chandef = link->conf->chanreq.oper; 3694 ieee80211_link_release_channel(link); 3695 cfg80211_cac_event(sdata->dev, &chandef, 3696 NL80211_RADAR_CAC_ABORTED, 3697 GFP_KERNEL, link_id); 3698 } 3699 } 3700 } 3701 3702 void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy, 3703 struct wiphy_work *work) 3704 { 3705 struct ieee80211_local *local = 3706 container_of(work, struct ieee80211_local, radar_detected_work); 3707 struct cfg80211_chan_def chandef; 3708 struct ieee80211_chanctx *ctx, *tmp; 3709 3710 lockdep_assert_wiphy(local->hw.wiphy); 3711 3712 list_for_each_entry_safe(ctx, tmp, &local->chanctx_list, list) { 3713 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) 3714 continue; 3715 3716 if (!ctx->radar_detected) 3717 continue; 3718 3719 ctx->radar_detected = false; 3720 3721 chandef = ctx->conf.def; 3722 3723 ieee80211_dfs_cac_cancel(local, ctx); 3724 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); 3725 } 3726 } 3727 3728 static void 3729 ieee80211_radar_mark_chan_ctx_iterator(struct ieee80211_hw *hw, 3730 struct ieee80211_chanctx_conf *chanctx_conf, 3731 void *data) 3732 { 3733 struct ieee80211_chanctx *ctx = 3734 container_of(chanctx_conf, struct ieee80211_chanctx, 3735 conf); 3736 3737 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) 3738 return; 3739 3740 if (data && data != chanctx_conf) 3741 return; 3742 3743 ctx->radar_detected = true; 3744 } 3745 3746 void ieee80211_radar_detected(struct ieee80211_hw *hw, 3747 struct ieee80211_chanctx_conf *chanctx_conf) 3748 { 3749 struct ieee80211_local *local = hw_to_local(hw); 3750 3751 trace_api_radar_detected(local); 3752 3753 ieee80211_iter_chan_contexts_atomic(hw, ieee80211_radar_mark_chan_ctx_iterator, 3754 chanctx_conf); 3755 3756 wiphy_work_queue(hw->wiphy, &local->radar_detected_work); 3757 } 3758 EXPORT_SYMBOL(ieee80211_radar_detected); 3759 3760 void ieee80211_chandef_downgrade(struct cfg80211_chan_def *c, 3761 struct ieee80211_conn_settings *conn) 3762 { 3763 enum nl80211_chan_width new_primary_width; 3764 struct ieee80211_conn_settings _ignored = {}; 3765 3766 /* allow passing NULL if caller doesn't care */ 3767 if (!conn) 3768 conn = &_ignored; 3769 3770 again: 3771 /* no-HT indicates nothing to do */ 3772 new_primary_width = NL80211_CHAN_WIDTH_20_NOHT; 3773 3774 switch (c->width) { 3775 default: 3776 case NL80211_CHAN_WIDTH_20_NOHT: 3777 WARN_ON_ONCE(1); 3778 fallthrough; 3779 case NL80211_CHAN_WIDTH_20: 3780 c->width = NL80211_CHAN_WIDTH_20_NOHT; 3781 conn->mode = IEEE80211_CONN_MODE_LEGACY; 3782 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3783 c->punctured = 0; 3784 break; 3785 case NL80211_CHAN_WIDTH_40: 3786 c->width = NL80211_CHAN_WIDTH_20; 3787 c->center_freq1 = c->chan->center_freq; 3788 if (conn->mode == IEEE80211_CONN_MODE_VHT) 3789 conn->mode = IEEE80211_CONN_MODE_HT; 3790 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3791 c->punctured = 0; 3792 break; 3793 case NL80211_CHAN_WIDTH_80: 3794 new_primary_width = NL80211_CHAN_WIDTH_40; 3795 if (conn->mode == IEEE80211_CONN_MODE_VHT) 3796 conn->mode = IEEE80211_CONN_MODE_HT; 3797 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_40; 3798 break; 3799 case NL80211_CHAN_WIDTH_80P80: 3800 c->center_freq2 = 0; 3801 c->width = NL80211_CHAN_WIDTH_80; 3802 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80; 3803 break; 3804 case NL80211_CHAN_WIDTH_160: 3805 new_primary_width = NL80211_CHAN_WIDTH_80; 3806 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80; 3807 break; 3808 case NL80211_CHAN_WIDTH_320: 3809 new_primary_width = NL80211_CHAN_WIDTH_160; 3810 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_160; 3811 break; 3812 case NL80211_CHAN_WIDTH_1: 3813 case NL80211_CHAN_WIDTH_2: 3814 case NL80211_CHAN_WIDTH_4: 3815 case NL80211_CHAN_WIDTH_8: 3816 case NL80211_CHAN_WIDTH_16: 3817 WARN_ON_ONCE(1); 3818 /* keep c->width */ 3819 conn->mode = IEEE80211_CONN_MODE_S1G; 3820 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3821 break; 3822 } 3823 3824 if (new_primary_width != NL80211_CHAN_WIDTH_20_NOHT) { 3825 c->center_freq1 = cfg80211_chandef_primary(c, new_primary_width, 3826 &c->punctured); 3827 c->width = new_primary_width; 3828 } 3829 3830 /* whatever we do, downgrading removes NPCA */ 3831 c->npca_chan = NULL; 3832 c->npca_punctured = 0; 3833 3834 /* 3835 * With an 80 MHz channel, we might have the puncturing in the primary 3836 * 40 Mhz channel, but that's not valid when downgraded to 40 MHz width. 3837 * In that case, downgrade again. 3838 */ 3839 if (!cfg80211_chandef_valid(c) && c->punctured) 3840 goto again; 3841 3842 WARN_ON_ONCE(!cfg80211_chandef_valid(c)); 3843 } 3844 3845 enum nl80211_chan_width 3846 ieee80211_sta_rx_bw_to_chan_width(enum ieee80211_sta_rx_bandwidth bw) 3847 { 3848 switch (bw) { 3849 case IEEE80211_STA_RX_BW_20: 3850 return NL80211_CHAN_WIDTH_20; 3851 case IEEE80211_STA_RX_BW_40: 3852 return NL80211_CHAN_WIDTH_40; 3853 case IEEE80211_STA_RX_BW_80: 3854 return NL80211_CHAN_WIDTH_80; 3855 case IEEE80211_STA_RX_BW_160: 3856 return NL80211_CHAN_WIDTH_160; 3857 case IEEE80211_STA_RX_BW_320: 3858 return NL80211_CHAN_WIDTH_320; 3859 default: 3860 return NL80211_CHAN_WIDTH_20; 3861 } 3862 } 3863 3864 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 3865 struct cfg80211_csa_settings *csa_settings) 3866 { 3867 int hdr_len = IEEE80211_MIN_ACTION_SIZE(chan_switch); 3868 struct sk_buff *skb; 3869 struct ieee80211_mgmt *mgmt; 3870 struct ieee80211_local *local = sdata->local; 3871 int freq; 3872 u8 *pos; 3873 3874 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3875 sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 3876 return -EOPNOTSUPP; 3877 3878 skb = dev_alloc_skb(local->tx_headroom + hdr_len + 3879 5 + /* channel switch announcement element */ 3880 3 + /* secondary channel offset element */ 3881 5 + /* wide bandwidth channel switch announcement */ 3882 8); /* mesh channel switch parameters element */ 3883 if (!skb) 3884 return -ENOMEM; 3885 3886 skb_reserve(skb, local->tx_headroom); 3887 mgmt = skb_put_zero(skb, hdr_len); 3888 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3889 IEEE80211_STYPE_ACTION); 3890 3891 eth_broadcast_addr(mgmt->da); 3892 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3893 if (ieee80211_vif_is_mesh(&sdata->vif)) { 3894 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); 3895 } else { 3896 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 3897 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 3898 } 3899 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; 3900 mgmt->u.action.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; 3901 pos = skb_put(skb, 5); 3902 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ 3903 *pos++ = 3; /* IE length */ 3904 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ 3905 freq = csa_settings->chandef.chan->center_freq; 3906 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ 3907 *pos++ = csa_settings->count; /* count */ 3908 3909 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { 3910 enum nl80211_channel_type ch_type; 3911 3912 skb_put(skb, 3); 3913 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ 3914 *pos++ = 1; /* IE length */ 3915 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); 3916 if (ch_type == NL80211_CHAN_HT40PLUS) 3917 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 3918 else 3919 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 3920 } 3921 3922 if (ieee80211_vif_is_mesh(&sdata->vif)) { 3923 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3924 3925 skb_put(skb, 8); 3926 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ 3927 *pos++ = 6; /* IE length */ 3928 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ 3929 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ 3930 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; 3931 *pos++ |= csa_settings->block_tx ? 3932 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; 3933 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ 3934 pos += 2; 3935 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ 3936 pos += 2; 3937 } 3938 3939 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 || 3940 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 || 3941 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) { 3942 skb_put(skb, 5); 3943 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef); 3944 } 3945 3946 ieee80211_tx_skb(sdata, skb); 3947 return 0; 3948 } 3949 3950 static bool 3951 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) 3952 { 3953 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); 3954 int skip; 3955 3956 if (end > 0) 3957 return false; 3958 3959 /* One shot NOA */ 3960 if (data->count[i] == 1) 3961 return false; 3962 3963 if (data->desc[i].interval == 0) 3964 return false; 3965 3966 /* End time is in the past, check for repetitions */ 3967 skip = DIV_ROUND_UP(-end, data->desc[i].interval); 3968 if (data->count[i] < 255) { 3969 if (data->count[i] <= skip) { 3970 data->count[i] = 0; 3971 return false; 3972 } 3973 3974 data->count[i] -= skip; 3975 } 3976 3977 data->desc[i].start += skip * data->desc[i].interval; 3978 3979 return true; 3980 } 3981 3982 static bool 3983 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, 3984 s32 *offset) 3985 { 3986 bool ret = false; 3987 int i; 3988 3989 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3990 s32 cur; 3991 3992 if (!data->count[i]) 3993 continue; 3994 3995 if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) 3996 ret = true; 3997 3998 cur = data->desc[i].start - tsf; 3999 if (cur > *offset) 4000 continue; 4001 4002 cur = data->desc[i].start + data->desc[i].duration - tsf; 4003 if (cur > *offset) 4004 *offset = cur; 4005 } 4006 4007 return ret; 4008 } 4009 4010 static u32 4011 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) 4012 { 4013 s32 offset = 0; 4014 int tries = 0; 4015 /* 4016 * arbitrary limit, used to avoid infinite loops when combined NoA 4017 * descriptors cover the full time period. 4018 */ 4019 int max_tries = 5; 4020 4021 ieee80211_extend_absent_time(data, tsf, &offset); 4022 do { 4023 if (!ieee80211_extend_absent_time(data, tsf, &offset)) 4024 break; 4025 4026 tries++; 4027 } while (tries < max_tries); 4028 4029 return offset; 4030 } 4031 4032 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) 4033 { 4034 u32 next_offset = BIT(31) - 1; 4035 int i; 4036 4037 data->absent = 0; 4038 data->has_next_tsf = false; 4039 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 4040 s32 start; 4041 4042 if (!data->count[i]) 4043 continue; 4044 4045 ieee80211_extend_noa_desc(data, tsf, i); 4046 start = data->desc[i].start - tsf; 4047 if (start <= 0) 4048 data->absent |= BIT(i); 4049 4050 if (next_offset > start) 4051 next_offset = start; 4052 4053 data->has_next_tsf = true; 4054 } 4055 4056 if (data->absent) 4057 next_offset = ieee80211_get_noa_absent_time(data, tsf); 4058 4059 data->next_tsf = tsf + next_offset; 4060 } 4061 EXPORT_SYMBOL(ieee80211_update_p2p_noa); 4062 4063 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, 4064 struct ieee80211_noa_data *data, u32 tsf) 4065 { 4066 int ret = 0; 4067 int i; 4068 4069 memset(data, 0, sizeof(*data)); 4070 4071 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 4072 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; 4073 4074 if (!desc->count || !desc->duration) 4075 continue; 4076 4077 data->count[i] = desc->count; 4078 data->desc[i].start = le32_to_cpu(desc->start_time); 4079 data->desc[i].duration = le32_to_cpu(desc->duration); 4080 data->desc[i].interval = le32_to_cpu(desc->interval); 4081 4082 if (data->count[i] > 1 && 4083 data->desc[i].interval < data->desc[i].duration) 4084 continue; 4085 4086 ieee80211_extend_noa_desc(data, tsf, i); 4087 ret++; 4088 } 4089 4090 if (ret) 4091 ieee80211_update_p2p_noa(data, tsf); 4092 4093 return ret; 4094 } 4095 EXPORT_SYMBOL(ieee80211_parse_p2p_noa); 4096 4097 void ieee80211_recalc_dtim(struct ieee80211_sub_if_data *sdata, u64 tsf) 4098 { 4099 u64 dtim_count = 0; 4100 u32 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; 4101 u8 dtim_period = sdata->vif.bss_conf.dtim_period; 4102 struct ps_data *ps; 4103 u8 bcns_from_dtim; 4104 4105 if (tsf == -1ULL || !beacon_int || !dtim_period) 4106 return; 4107 4108 if (sdata->vif.type == NL80211_IFTYPE_AP || 4109 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { 4110 if (!sdata->bss) 4111 return; 4112 4113 ps = &sdata->bss->ps; 4114 } else if (ieee80211_vif_is_mesh(&sdata->vif)) { 4115 ps = &sdata->u.mesh.ps; 4116 } else { 4117 return; 4118 } 4119 4120 /* 4121 * actually finds last dtim_count, mac80211 will update in 4122 * __beacon_add_tim(). 4123 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period 4124 */ 4125 do_div(tsf, beacon_int); 4126 bcns_from_dtim = do_div(tsf, dtim_period); 4127 /* just had a DTIM */ 4128 if (!bcns_from_dtim) 4129 dtim_count = 0; 4130 else 4131 dtim_count = dtim_period - bcns_from_dtim; 4132 4133 ps->dtim_count = dtim_count; 4134 } 4135 4136 /* 4137 * Given a long beacon period, calculate the current index into 4138 * that period to determine the number of TSBTTs until the next TBTT. 4139 * It is completely valid to have a short beacon period that differs 4140 * from the dtim period (i.e a TBTT thats not a DTIM). 4141 */ 4142 void ieee80211_recalc_sb_count(struct ieee80211_sub_if_data *sdata, u64 tsf) 4143 { 4144 u32 sb_idx; 4145 struct ps_data *ps = &sdata->bss->ps; 4146 u8 lb_period = sdata->vif.bss_conf.s1g_long_beacon_period; 4147 u32 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; 4148 4149 /* No mesh / IBSS support for short beaconing */ 4150 if (tsf == -1ULL || !lb_period || 4151 (sdata->vif.type != NL80211_IFTYPE_AP && 4152 sdata->vif.type != NL80211_IFTYPE_AP_VLAN)) 4153 return; 4154 4155 /* find the current TSBTT index in our lb_period */ 4156 do_div(tsf, beacon_int); 4157 sb_idx = do_div(tsf, lb_period); 4158 4159 /* num TSBTTs until the next TBTT */ 4160 ps->sb_count = sb_idx ? lb_period - sb_idx : 0; 4161 } 4162 4163 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, 4164 struct ieee80211_chanctx *ctx) 4165 { 4166 struct ieee80211_link_data *link; 4167 u8 radar_detect = 0; 4168 4169 lockdep_assert_wiphy(local->hw.wiphy); 4170 4171 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) 4172 return 0; 4173 4174 for_each_sdata_link(local, link) { 4175 if (rcu_access_pointer(link->conf->chanctx_conf) == &ctx->conf) { 4176 /* 4177 * An in-place reservation context should not have any 4178 * assigned links until it replaces the other context. 4179 */ 4180 WARN_ON(ctx->replace_state == 4181 IEEE80211_CHANCTX_REPLACES_OTHER); 4182 4183 if (link->radar_required) 4184 radar_detect |= 4185 BIT(link->conf->chanreq.oper.width); 4186 } 4187 4188 if (link->reserved_chanctx == ctx && 4189 link->reserved_radar_required) 4190 radar_detect |= BIT(link->reserved.oper.width); 4191 } 4192 4193 return radar_detect; 4194 } 4195 4196 bool ieee80211_is_radio_idx_in_scan_req(struct wiphy *wiphy, 4197 struct cfg80211_scan_request *scan_req, 4198 int radio_idx) 4199 { 4200 struct ieee80211_channel *chan; 4201 int i, chan_radio_idx; 4202 4203 for (i = 0; i < scan_req->n_channels; i++) { 4204 chan = scan_req->channels[i]; 4205 chan_radio_idx = cfg80211_get_radio_idx_by_chan(wiphy, chan); 4206 4207 /* The radio index either matched successfully, or an error 4208 * occurred. For example, if radio-level information is 4209 * missing, the same error value is returned. This 4210 * typically implies a single-radio setup, in which case 4211 * the operation should not be allowed. 4212 */ 4213 if (chan_radio_idx == radio_idx) 4214 return true; 4215 } 4216 4217 return false; 4218 } 4219 4220 static u32 4221 __ieee80211_get_radio_mask(struct ieee80211_sub_if_data *sdata) 4222 { 4223 struct ieee80211_bss_conf *link_conf; 4224 struct ieee80211_chanctx_conf *conf; 4225 unsigned int link_id; 4226 u32 mask = 0; 4227 4228 for_each_vif_active_link(&sdata->vif, link_conf, link_id) { 4229 conf = sdata_dereference(link_conf->chanctx_conf, sdata); 4230 if (!conf || conf->radio_idx < 0) 4231 continue; 4232 4233 mask |= BIT(conf->radio_idx); 4234 } 4235 4236 return mask; 4237 } 4238 4239 u32 ieee80211_get_radio_mask(struct wiphy *wiphy, struct net_device *dev) 4240 { 4241 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 4242 4243 return __ieee80211_get_radio_mask(sdata); 4244 } 4245 4246 static bool 4247 ieee80211_sdata_uses_radio(struct ieee80211_sub_if_data *sdata, int radio_idx) 4248 { 4249 if (radio_idx < 0) 4250 return true; 4251 4252 return __ieee80211_get_radio_mask(sdata) & BIT(radio_idx); 4253 } 4254 4255 static int 4256 ieee80211_fill_ifcomb_params(struct ieee80211_local *local, 4257 struct iface_combination_params *params, 4258 const struct cfg80211_chan_def *chandef, 4259 struct ieee80211_sub_if_data *sdata, 4260 bool (*chanctx_filter)(struct ieee80211_chanctx *ctx, 4261 void *filter_data), 4262 void *filter_data) 4263 { 4264 struct ieee80211_sub_if_data *sdata_iter; 4265 struct ieee80211_chanctx *ctx; 4266 int total = !!sdata; 4267 4268 list_for_each_entry(ctx, &local->chanctx_list, list) { 4269 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 4270 continue; 4271 4272 if (params->radio_idx >= 0 && 4273 ctx->conf.radio_idx != params->radio_idx) 4274 continue; 4275 4276 params->radar_detect |= 4277 ieee80211_chanctx_radar_detect(local, ctx); 4278 4279 if (chandef && ctx->mode != IEEE80211_CHANCTX_EXCLUSIVE && 4280 cfg80211_chandef_compatible(chandef, &ctx->conf.def)) 4281 continue; 4282 4283 if (chanctx_filter && 4284 chanctx_filter(ctx, filter_data)) 4285 continue; 4286 4287 params->num_different_channels++; 4288 } 4289 4290 list_for_each_entry(sdata_iter, &local->interfaces, list) { 4291 struct wireless_dev *wdev_iter; 4292 4293 wdev_iter = &sdata_iter->wdev; 4294 4295 if (sdata_iter == sdata || 4296 !ieee80211_sdata_running(sdata_iter) || 4297 cfg80211_iftype_allowed(local->hw.wiphy, 4298 wdev_iter->iftype, 0, 1)) 4299 continue; 4300 4301 if (!ieee80211_sdata_uses_radio(sdata_iter, params->radio_idx)) 4302 continue; 4303 4304 params->iftype_num[wdev_iter->iftype]++; 4305 total++; 4306 } 4307 4308 return total; 4309 } 4310 4311 int ieee80211_check_combinations_ext(struct ieee80211_sub_if_data *sdata, 4312 struct ieee80211_check_combinations_data *data) 4313 { 4314 const struct cfg80211_chan_def *chandef = data->chandef; 4315 bool shared = data->chanmode == IEEE80211_CHANCTX_SHARED; 4316 struct ieee80211_local *local = sdata->local; 4317 enum nl80211_iftype iftype = sdata->wdev.iftype; 4318 struct iface_combination_params params = { 4319 .radar_detect = data->radar_detect, 4320 .radio_idx = data->radio_idx, 4321 }; 4322 int total; 4323 4324 lockdep_assert_wiphy(local->hw.wiphy); 4325 4326 if (WARN_ON(hweight32(data->radar_detect) > 1)) 4327 return -EINVAL; 4328 4329 if (WARN_ON(chandef && data->chanmode == IEEE80211_CHANCTX_SHARED && 4330 !chandef->chan)) 4331 return -EINVAL; 4332 4333 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) 4334 return -EINVAL; 4335 4336 if (sdata->vif.type == NL80211_IFTYPE_AP || 4337 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) { 4338 /* 4339 * always passing this is harmless, since it'll be the 4340 * same value that cfg80211 finds if it finds the same 4341 * interface ... and that's always allowed 4342 */ 4343 params.new_beacon_int = sdata->vif.bss_conf.beacon_int; 4344 } 4345 4346 /* Always allow software iftypes */ 4347 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) { 4348 if (data->radar_detect) 4349 return -EINVAL; 4350 return 0; 4351 } 4352 4353 if (chandef) 4354 params.num_different_channels = 1; 4355 4356 if (iftype != NL80211_IFTYPE_UNSPECIFIED) 4357 params.iftype_num[iftype] = 1; 4358 4359 total = ieee80211_fill_ifcomb_params(local, ¶ms, 4360 shared ? chandef : NULL, 4361 sdata, 4362 data->chanctx_filter, 4363 data->filter_data); 4364 if (total == 1 && !params.radar_detect) 4365 return 0; 4366 4367 return cfg80211_check_combinations(local->hw.wiphy, ¶ms); 4368 } 4369 4370 static void 4371 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, 4372 void *data) 4373 { 4374 u32 *max_num_different_channels = data; 4375 4376 *max_num_different_channels = max(*max_num_different_channels, 4377 c->num_different_channels); 4378 } 4379 4380 int ieee80211_max_num_channels(struct ieee80211_local *local, int radio_idx) 4381 { 4382 u32 max_num_different_channels = 1; 4383 int err; 4384 struct iface_combination_params params = { 4385 .radio_idx = radio_idx, 4386 }; 4387 4388 lockdep_assert_wiphy(local->hw.wiphy); 4389 4390 ieee80211_fill_ifcomb_params(local, ¶ms, NULL, NULL, NULL, NULL); 4391 4392 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms, 4393 ieee80211_iter_max_chans, 4394 &max_num_different_channels); 4395 if (err < 0) 4396 return err; 4397 4398 return max_num_different_channels; 4399 } 4400 4401 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 4402 struct ieee80211_sta_s1g_cap *caps, 4403 struct sk_buff *skb) 4404 { 4405 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4406 struct ieee80211_s1g_cap s1g_capab; 4407 u8 *pos; 4408 int i; 4409 4410 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 4411 return; 4412 4413 if (!caps->s1g) 4414 return; 4415 4416 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap)); 4417 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs)); 4418 4419 /* override the capability info */ 4420 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) { 4421 u8 mask = ifmgd->s1g_capa_mask.capab_info[i]; 4422 4423 s1g_capab.capab_info[i] &= ~mask; 4424 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask; 4425 } 4426 4427 /* then MCS and NSS set */ 4428 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) { 4429 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i]; 4430 4431 s1g_capab.supp_mcs_nss[i] &= ~mask; 4432 s1g_capab.supp_mcs_nss[i] |= 4433 ifmgd->s1g_capa.supp_mcs_nss[i] & mask; 4434 } 4435 4436 pos = skb_put(skb, 2 + sizeof(s1g_capab)); 4437 *pos++ = WLAN_EID_S1G_CAPABILITIES; 4438 *pos++ = sizeof(s1g_capab); 4439 4440 memcpy(pos, &s1g_capab, sizeof(s1g_capab)); 4441 } 4442 4443 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 4444 struct sk_buff *skb) 4445 { 4446 u8 *pos = skb_put(skb, 3); 4447 4448 *pos++ = WLAN_EID_AID_REQUEST; 4449 *pos++ = 1; 4450 *pos++ = 0; 4451 } 4452 4453 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) 4454 { 4455 *buf++ = WLAN_EID_VENDOR_SPECIFIC; 4456 *buf++ = 7; /* len */ 4457 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ 4458 *buf++ = 0x50; 4459 *buf++ = 0xf2; 4460 *buf++ = 2; /* WME */ 4461 *buf++ = 0; /* WME info */ 4462 *buf++ = 1; /* WME ver */ 4463 *buf++ = qosinfo; /* U-APSD no in use */ 4464 4465 return buf; 4466 } 4467 4468 void ieee80211_txq_get_depth(struct ieee80211_txq *txq, 4469 unsigned long *frame_cnt, 4470 unsigned long *byte_cnt) 4471 { 4472 struct txq_info *txqi = to_txq_info(txq); 4473 u32 frag_cnt = 0, frag_bytes = 0; 4474 struct sk_buff *skb; 4475 4476 skb_queue_walk(&txqi->frags, skb) { 4477 frag_cnt++; 4478 frag_bytes += skb->len; 4479 } 4480 4481 if (frame_cnt) 4482 *frame_cnt = txqi->tin.backlog_packets + frag_cnt; 4483 4484 if (byte_cnt) 4485 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes; 4486 } 4487 EXPORT_SYMBOL(ieee80211_txq_get_depth); 4488 4489 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = { 4490 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO, 4491 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI, 4492 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE, 4493 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK 4494 }; 4495 4496 u16 ieee80211_encode_usf(int listen_interval) 4497 { 4498 static const int listen_int_usf[] = { 1, 10, 1000, 10000 }; 4499 u16 ui, usf = 0; 4500 4501 /* find greatest USF */ 4502 while (usf < IEEE80211_MAX_USF) { 4503 if (listen_interval % listen_int_usf[usf + 1]) 4504 break; 4505 usf += 1; 4506 } 4507 ui = listen_interval / listen_int_usf[usf]; 4508 4509 /* error if there is a remainder. Should've been checked by user */ 4510 WARN_ON_ONCE(ui > IEEE80211_MAX_UI); 4511 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) | 4512 FIELD_PREP(LISTEN_INT_UI, ui); 4513 4514 return (u16) listen_interval; 4515 } 4516 4517 /* this may return more than ieee80211_put_eht_cap() will need */ 4518 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata) 4519 { 4520 const struct ieee80211_sta_he_cap *he_cap; 4521 const struct ieee80211_sta_eht_cap *eht_cap; 4522 struct ieee80211_supported_band *sband; 4523 bool is_ap; 4524 u8 n; 4525 4526 sband = ieee80211_get_sband(sdata); 4527 if (!sband) 4528 return 0; 4529 4530 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 4531 eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); 4532 if (!he_cap || !eht_cap) 4533 return 0; 4534 4535 is_ap = sdata->vif.type == NL80211_IFTYPE_AP; 4536 4537 n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 4538 &eht_cap->eht_cap_elem, 4539 is_ap); 4540 return 2 + 1 + 4541 sizeof(eht_cap->eht_cap_elem) + n + 4542 ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], 4543 eht_cap->eht_cap_elem.phy_cap_info); 4544 return 0; 4545 } 4546 4547 int ieee80211_put_eht_cap(struct sk_buff *skb, 4548 struct ieee80211_sub_if_data *sdata, 4549 const struct ieee80211_supported_band *sband, 4550 const struct ieee80211_conn_settings *conn) 4551 { 4552 const struct ieee80211_sta_he_cap *he_cap = 4553 ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 4554 const struct ieee80211_sta_eht_cap *eht_cap = 4555 ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); 4556 bool for_ap = sdata->vif.type == NL80211_IFTYPE_AP; 4557 struct ieee80211_eht_cap_elem_fixed fixed; 4558 struct ieee80211_he_cap_elem he; 4559 u8 mcs_nss_len, ppet_len; 4560 u8 orig_mcs_nss_len; 4561 u8 ie_len; 4562 4563 if (!conn) 4564 conn = &ieee80211_conn_settings_unlimited; 4565 4566 /* Make sure we have place for the IE */ 4567 if (!he_cap || !eht_cap) 4568 return 0; 4569 4570 orig_mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 4571 &eht_cap->eht_cap_elem, 4572 for_ap); 4573 4574 ieee80211_get_adjusted_he_cap(conn, he_cap, &he); 4575 4576 fixed = eht_cap->eht_cap_elem; 4577 4578 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_80) 4579 fixed.phy_cap_info[6] &= 4580 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_80MHZ; 4581 4582 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) { 4583 fixed.phy_cap_info[1] &= 4584 ~IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK; 4585 fixed.phy_cap_info[2] &= 4586 ~IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK; 4587 fixed.phy_cap_info[6] &= 4588 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_160MHZ; 4589 } 4590 4591 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_320) { 4592 fixed.phy_cap_info[0] &= 4593 ~IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ; 4594 fixed.phy_cap_info[1] &= 4595 ~IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK; 4596 fixed.phy_cap_info[2] &= 4597 ~IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK; 4598 fixed.phy_cap_info[6] &= 4599 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_320MHZ; 4600 } 4601 4602 if (conn->bw_limit == IEEE80211_CONN_BW_LIMIT_20) 4603 fixed.phy_cap_info[0] &= 4604 ~IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ; 4605 4606 mcs_nss_len = ieee80211_eht_mcs_nss_size(&he, &fixed, for_ap); 4607 ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], 4608 fixed.phy_cap_info); 4609 4610 ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len; 4611 if (skb_tailroom(skb) < ie_len) 4612 return -ENOBUFS; 4613 4614 skb_put_u8(skb, WLAN_EID_EXTENSION); 4615 skb_put_u8(skb, ie_len - 2); 4616 skb_put_u8(skb, WLAN_EID_EXT_EHT_CAPABILITY); 4617 skb_put_data(skb, &fixed, sizeof(fixed)); 4618 4619 if (mcs_nss_len == 4 && orig_mcs_nss_len != 4) { 4620 /* 4621 * If the (non-AP) STA became 20 MHz only, then convert from 4622 * <=80 to 20-MHz-only format, where MCSes are indicated in 4623 * the groups 0-7, 8-9, 10-11, 12-13 rather than just 0-9, 4624 * 10-11, 12-13. Thus, use 0-9 for 0-7 and 8-9. 4625 */ 4626 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss); 4627 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss); 4628 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs11_max_nss); 4629 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs13_max_nss); 4630 } else { 4631 skb_put_data(skb, &eht_cap->eht_mcs_nss_supp, mcs_nss_len); 4632 } 4633 4634 if (ppet_len) 4635 skb_put_data(skb, &eht_cap->eht_ppe_thres, ppet_len); 4636 4637 return 0; 4638 } 4639 4640 int ieee80211_put_uhr_cap(struct sk_buff *skb, 4641 struct ieee80211_sub_if_data *sdata, 4642 const struct ieee80211_supported_band *sband) 4643 { 4644 const struct ieee80211_sta_uhr_cap *uhr_cap = 4645 ieee80211_get_uhr_iftype_cap_vif(sband, &sdata->vif); 4646 int len; 4647 4648 if (!uhr_cap) 4649 return 0; 4650 4651 len = 2 + 1 + sizeof(struct ieee80211_uhr_cap); 4652 4653 if (skb_tailroom(skb) < len) 4654 return -ENOBUFS; 4655 4656 skb_put_u8(skb, WLAN_EID_EXTENSION); 4657 skb_put_u8(skb, len - 2); 4658 skb_put_u8(skb, WLAN_EID_EXT_UHR_CAPA); 4659 skb_put_data(skb, &uhr_cap->mac, sizeof(uhr_cap->mac)); 4660 skb_put_data(skb, &uhr_cap->phy, sizeof(uhr_cap->phy)); 4661 4662 return 0; 4663 } 4664 4665 const char *ieee80211_conn_mode_str(enum ieee80211_conn_mode mode) 4666 { 4667 static const char * const modes[] = { 4668 [IEEE80211_CONN_MODE_S1G] = "S1G", 4669 [IEEE80211_CONN_MODE_LEGACY] = "legacy", 4670 [IEEE80211_CONN_MODE_HT] = "HT", 4671 [IEEE80211_CONN_MODE_VHT] = "VHT", 4672 [IEEE80211_CONN_MODE_HE] = "HE", 4673 [IEEE80211_CONN_MODE_EHT] = "EHT", 4674 [IEEE80211_CONN_MODE_UHR] = "UHR", 4675 }; 4676 4677 if (WARN_ON(mode >= ARRAY_SIZE(modes))) 4678 return "<out of range>"; 4679 4680 return modes[mode] ?: "<missing string>"; 4681 } 4682 4683 enum ieee80211_conn_bw_limit 4684 ieee80211_min_bw_limit_from_chandef(struct cfg80211_chan_def *chandef) 4685 { 4686 switch (chandef->width) { 4687 case NL80211_CHAN_WIDTH_20_NOHT: 4688 case NL80211_CHAN_WIDTH_20: 4689 return IEEE80211_CONN_BW_LIMIT_20; 4690 case NL80211_CHAN_WIDTH_40: 4691 return IEEE80211_CONN_BW_LIMIT_40; 4692 case NL80211_CHAN_WIDTH_80: 4693 return IEEE80211_CONN_BW_LIMIT_80; 4694 case NL80211_CHAN_WIDTH_80P80: 4695 case NL80211_CHAN_WIDTH_160: 4696 return IEEE80211_CONN_BW_LIMIT_160; 4697 case NL80211_CHAN_WIDTH_320: 4698 return IEEE80211_CONN_BW_LIMIT_320; 4699 default: 4700 WARN(1, "unhandled chandef width %d\n", chandef->width); 4701 return IEEE80211_CONN_BW_LIMIT_20; 4702 } 4703 } 4704 4705 void ieee80211_clear_tpe(struct ieee80211_parsed_tpe *tpe) 4706 { 4707 for (int i = 0; i < 2; i++) { 4708 tpe->max_local[i].valid = false; 4709 memset(tpe->max_local[i].power, 4710 IEEE80211_TPE_MAX_TX_PWR_NO_CONSTRAINT, 4711 sizeof(tpe->max_local[i].power)); 4712 4713 tpe->max_reg_client[i].valid = false; 4714 memset(tpe->max_reg_client[i].power, 4715 IEEE80211_TPE_MAX_TX_PWR_NO_CONSTRAINT, 4716 sizeof(tpe->max_reg_client[i].power)); 4717 4718 tpe->psd_local[i].valid = false; 4719 memset(tpe->psd_local[i].power, 4720 IEEE80211_TPE_PSD_NO_LIMIT, 4721 sizeof(tpe->psd_local[i].power)); 4722 4723 tpe->psd_reg_client[i].valid = false; 4724 memset(tpe->psd_reg_client[i].power, 4725 IEEE80211_TPE_PSD_NO_LIMIT, 4726 sizeof(tpe->psd_reg_client[i].power)); 4727 } 4728 } 4729 4730 bool ieee80211_vif_nan_started(struct ieee80211_vif *vif) 4731 { 4732 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 4733 4734 return vif->type == NL80211_IFTYPE_NAN && sdata->u.nan.started; 4735 } 4736 EXPORT_SYMBOL_GPL(ieee80211_vif_nan_started); 4737