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 return ext->u.s1g_beacon.sa; 77 } 78 79 if (ieee80211_is_mgmt(fc)) { 80 if (len < 24) /* drop incorrect hdr len (mgmt) */ 81 return NULL; 82 return hdr->addr3; 83 } 84 85 if (ieee80211_is_ctl(fc)) { 86 if (ieee80211_is_pspoll(fc)) 87 return hdr->addr1; 88 89 if (ieee80211_is_back_req(fc)) { 90 switch (type) { 91 case NL80211_IFTYPE_STATION: 92 return hdr->addr2; 93 case NL80211_IFTYPE_AP: 94 case NL80211_IFTYPE_AP_VLAN: 95 return hdr->addr1; 96 default: 97 break; /* fall through to the return */ 98 } 99 } 100 } 101 102 return NULL; 103 } 104 105 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) 106 { 107 struct sk_buff *skb; 108 struct ieee80211_hdr *hdr; 109 110 skb_queue_walk(&tx->skbs, skb) { 111 hdr = (struct ieee80211_hdr *) skb->data; 112 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 113 } 114 } 115 116 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 117 int rate, int erp, int short_preamble) 118 { 119 int dur; 120 121 /* calculate duration (in microseconds, rounded up to next higher 122 * integer if it includes a fractional microsecond) to send frame of 123 * len bytes (does not include FCS) at the given rate. Duration will 124 * also include SIFS. 125 * 126 * rate is in 100 kbps, so divident is multiplied by 10 in the 127 * DIV_ROUND_UP() operations. 128 */ 129 130 if (band == NL80211_BAND_5GHZ || erp) { 131 /* 132 * OFDM: 133 * 134 * N_DBPS = DATARATE x 4 135 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) 136 * (16 = SIGNAL time, 6 = tail bits) 137 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext 138 * 139 * T_SYM = 4 usec 140 * 802.11a - 18.5.2: aSIFSTime = 16 usec 141 * 802.11g - 19.8.4: aSIFSTime = 10 usec + 142 * signal ext = 6 usec 143 */ 144 dur = 16; /* SIFS + signal ext */ 145 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ 146 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ 147 148 /* rates should already consider the channel bandwidth, 149 * don't apply divisor again. 150 */ 151 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, 152 4 * rate); /* T_SYM x N_SYM */ 153 } else { 154 /* 155 * 802.11b or 802.11g with 802.11b compatibility: 156 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + 157 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. 158 * 159 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 160 * aSIFSTime = 10 usec 161 * aPreambleLength = 144 usec or 72 usec with short preamble 162 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble 163 */ 164 dur = 10; /* aSIFSTime = 10 usec */ 165 dur += short_preamble ? (72 + 24) : (144 + 48); 166 167 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); 168 } 169 170 return dur; 171 } 172 173 /* Exported duration function for driver use */ 174 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, 175 struct ieee80211_vif *vif, 176 enum nl80211_band band, 177 size_t frame_len, 178 struct ieee80211_rate *rate) 179 { 180 struct ieee80211_sub_if_data *sdata; 181 u16 dur; 182 int erp; 183 bool short_preamble = false; 184 185 erp = 0; 186 if (vif) { 187 sdata = vif_to_sdata(vif); 188 short_preamble = sdata->vif.bss_conf.use_short_preamble; 189 if (sdata->deflink.operating_11g_mode) 190 erp = rate->flags & IEEE80211_RATE_ERP_G; 191 } 192 193 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, 194 short_preamble); 195 196 return cpu_to_le16(dur); 197 } 198 EXPORT_SYMBOL(ieee80211_generic_frame_duration); 199 200 __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, 201 struct ieee80211_vif *vif, size_t frame_len, 202 const struct ieee80211_tx_info *frame_txctl) 203 { 204 struct ieee80211_local *local = hw_to_local(hw); 205 struct ieee80211_rate *rate; 206 struct ieee80211_sub_if_data *sdata; 207 bool short_preamble; 208 int erp, bitrate; 209 u16 dur; 210 struct ieee80211_supported_band *sband; 211 212 sband = local->hw.wiphy->bands[frame_txctl->band]; 213 214 short_preamble = false; 215 216 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 217 218 erp = 0; 219 if (vif) { 220 sdata = vif_to_sdata(vif); 221 short_preamble = sdata->vif.bss_conf.use_short_preamble; 222 if (sdata->deflink.operating_11g_mode) 223 erp = rate->flags & IEEE80211_RATE_ERP_G; 224 } 225 226 bitrate = rate->bitrate; 227 228 /* CTS duration */ 229 dur = ieee80211_frame_duration(sband->band, 10, bitrate, 230 erp, short_preamble); 231 /* Data frame duration */ 232 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, 233 erp, short_preamble); 234 /* ACK duration */ 235 dur += ieee80211_frame_duration(sband->band, 10, bitrate, 236 erp, short_preamble); 237 238 return cpu_to_le16(dur); 239 } 240 EXPORT_SYMBOL(ieee80211_rts_duration); 241 242 __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, 243 struct ieee80211_vif *vif, 244 size_t frame_len, 245 const struct ieee80211_tx_info *frame_txctl) 246 { 247 struct ieee80211_local *local = hw_to_local(hw); 248 struct ieee80211_rate *rate; 249 struct ieee80211_sub_if_data *sdata; 250 bool short_preamble; 251 int erp, bitrate; 252 u16 dur; 253 struct ieee80211_supported_band *sband; 254 255 sband = local->hw.wiphy->bands[frame_txctl->band]; 256 257 short_preamble = false; 258 259 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 260 erp = 0; 261 if (vif) { 262 sdata = vif_to_sdata(vif); 263 short_preamble = sdata->vif.bss_conf.use_short_preamble; 264 if (sdata->deflink.operating_11g_mode) 265 erp = rate->flags & IEEE80211_RATE_ERP_G; 266 } 267 268 bitrate = rate->bitrate; 269 270 /* Data frame duration */ 271 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, 272 erp, short_preamble); 273 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { 274 /* ACK duration */ 275 dur += ieee80211_frame_duration(sband->band, 10, bitrate, 276 erp, short_preamble); 277 } 278 279 return cpu_to_le16(dur); 280 } 281 EXPORT_SYMBOL(ieee80211_ctstoself_duration); 282 283 static void wake_tx_push_queue(struct ieee80211_local *local, 284 struct ieee80211_sub_if_data *sdata, 285 struct ieee80211_txq *queue) 286 { 287 struct ieee80211_tx_control control = { 288 .sta = queue->sta, 289 }; 290 struct sk_buff *skb; 291 292 while (1) { 293 skb = ieee80211_tx_dequeue(&local->hw, queue); 294 if (!skb) 295 break; 296 297 drv_tx(local, &control, skb); 298 } 299 } 300 301 /* wake_tx_queue handler for driver not implementing a custom one*/ 302 void ieee80211_handle_wake_tx_queue(struct ieee80211_hw *hw, 303 struct ieee80211_txq *txq) 304 { 305 struct ieee80211_local *local = hw_to_local(hw); 306 struct ieee80211_sub_if_data *sdata = vif_to_sdata(txq->vif); 307 struct ieee80211_txq *queue; 308 309 spin_lock(&local->handle_wake_tx_queue_lock); 310 311 /* Use ieee80211_next_txq() for airtime fairness accounting */ 312 ieee80211_txq_schedule_start(hw, txq->ac); 313 while ((queue = ieee80211_next_txq(hw, txq->ac))) { 314 wake_tx_push_queue(local, sdata, queue); 315 ieee80211_return_txq(hw, queue, false); 316 } 317 ieee80211_txq_schedule_end(hw, txq->ac); 318 spin_unlock(&local->handle_wake_tx_queue_lock); 319 } 320 EXPORT_SYMBOL(ieee80211_handle_wake_tx_queue); 321 322 static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac) 323 { 324 struct ieee80211_local *local = sdata->local; 325 struct ieee80211_vif *vif = &sdata->vif; 326 struct fq *fq = &local->fq; 327 struct ps_data *ps = NULL; 328 struct txq_info *txqi; 329 struct sta_info *sta; 330 int i; 331 332 local_bh_disable(); 333 spin_lock(&fq->lock); 334 335 if (!test_bit(SDATA_STATE_RUNNING, &sdata->state)) 336 goto out; 337 338 if (sdata->vif.type == NL80211_IFTYPE_AP) 339 ps = &sdata->bss->ps; 340 341 list_for_each_entry_rcu(sta, &local->sta_list, list) { 342 if (sdata != sta->sdata) 343 continue; 344 345 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { 346 struct ieee80211_txq *txq = sta->sta.txq[i]; 347 348 if (!txq) 349 continue; 350 351 txqi = to_txq_info(txq); 352 353 if (ac != txq->ac) 354 continue; 355 356 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, 357 &txqi->flags)) 358 continue; 359 360 spin_unlock(&fq->lock); 361 drv_wake_tx_queue(local, txqi); 362 spin_lock(&fq->lock); 363 } 364 } 365 366 if (!vif->txq) 367 goto out; 368 369 txqi = to_txq_info(vif->txq); 370 371 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) || 372 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac) 373 goto out; 374 375 spin_unlock(&fq->lock); 376 377 drv_wake_tx_queue(local, txqi); 378 local_bh_enable(); 379 return; 380 out: 381 spin_unlock(&fq->lock); 382 local_bh_enable(); 383 } 384 385 static void 386 __releases(&local->queue_stop_reason_lock) 387 __acquires(&local->queue_stop_reason_lock) 388 _ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags) 389 { 390 struct ieee80211_sub_if_data *sdata; 391 int n_acs = IEEE80211_NUM_ACS; 392 int i; 393 394 rcu_read_lock(); 395 396 if (local->hw.queues < IEEE80211_NUM_ACS) 397 n_acs = 1; 398 399 for (i = 0; i < local->hw.queues; i++) { 400 if (local->queue_stop_reasons[i]) 401 continue; 402 403 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags); 404 list_for_each_entry_rcu(sdata, &local->interfaces, list) { 405 int ac; 406 407 for (ac = 0; ac < n_acs; ac++) { 408 int ac_queue = sdata->vif.hw_queue[ac]; 409 410 if (ac_queue == i || 411 sdata->vif.cab_queue == i) 412 __ieee80211_wake_txqs(sdata, ac); 413 } 414 } 415 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags); 416 } 417 418 rcu_read_unlock(); 419 } 420 421 void ieee80211_wake_txqs(struct tasklet_struct *t) 422 { 423 struct ieee80211_local *local = from_tasklet(local, t, 424 wake_txqs_tasklet); 425 unsigned long flags; 426 427 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 428 _ieee80211_wake_txqs(local, &flags); 429 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 430 } 431 432 static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, 433 enum queue_stop_reason reason, 434 bool refcounted, 435 unsigned long *flags) 436 { 437 struct ieee80211_local *local = hw_to_local(hw); 438 439 if (WARN_ON(queue >= hw->queues)) 440 return; 441 442 if (!test_bit(reason, &local->queue_stop_reasons[queue])) 443 return; 444 445 if (!refcounted) { 446 local->q_stop_reasons[queue][reason] = 0; 447 } else { 448 local->q_stop_reasons[queue][reason]--; 449 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0)) 450 local->q_stop_reasons[queue][reason] = 0; 451 } 452 453 if (local->q_stop_reasons[queue][reason] == 0) 454 __clear_bit(reason, &local->queue_stop_reasons[queue]); 455 456 trace_wake_queue(local, queue, reason, 457 local->q_stop_reasons[queue][reason]); 458 459 if (local->queue_stop_reasons[queue] != 0) 460 /* someone still has this queue stopped */ 461 return; 462 463 if (!skb_queue_empty(&local->pending[queue])) 464 tasklet_schedule(&local->tx_pending_tasklet); 465 466 /* 467 * Calling _ieee80211_wake_txqs here can be a problem because it may 468 * release queue_stop_reason_lock which has been taken by 469 * __ieee80211_wake_queue's caller. It is certainly not very nice to 470 * release someone's lock, but it is fine because all the callers of 471 * __ieee80211_wake_queue call it right before releasing the lock. 472 */ 473 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER) 474 tasklet_schedule(&local->wake_txqs_tasklet); 475 else 476 _ieee80211_wake_txqs(local, flags); 477 } 478 479 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 480 enum queue_stop_reason reason, 481 bool refcounted) 482 { 483 struct ieee80211_local *local = hw_to_local(hw); 484 unsigned long flags; 485 486 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 487 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags); 488 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 489 } 490 491 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) 492 { 493 ieee80211_wake_queue_by_reason(hw, queue, 494 IEEE80211_QUEUE_STOP_REASON_DRIVER, 495 false); 496 } 497 EXPORT_SYMBOL(ieee80211_wake_queue); 498 499 static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, 500 enum queue_stop_reason reason, 501 bool refcounted) 502 { 503 struct ieee80211_local *local = hw_to_local(hw); 504 505 if (WARN_ON(queue >= hw->queues)) 506 return; 507 508 if (!refcounted) 509 local->q_stop_reasons[queue][reason] = 1; 510 else 511 local->q_stop_reasons[queue][reason]++; 512 513 trace_stop_queue(local, queue, reason, 514 local->q_stop_reasons[queue][reason]); 515 516 set_bit(reason, &local->queue_stop_reasons[queue]); 517 } 518 519 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 520 enum queue_stop_reason reason, 521 bool refcounted) 522 { 523 struct ieee80211_local *local = hw_to_local(hw); 524 unsigned long flags; 525 526 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 527 __ieee80211_stop_queue(hw, queue, reason, refcounted); 528 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 529 } 530 531 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) 532 { 533 ieee80211_stop_queue_by_reason(hw, queue, 534 IEEE80211_QUEUE_STOP_REASON_DRIVER, 535 false); 536 } 537 EXPORT_SYMBOL(ieee80211_stop_queue); 538 539 void ieee80211_add_pending_skb(struct ieee80211_local *local, 540 struct sk_buff *skb) 541 { 542 struct ieee80211_hw *hw = &local->hw; 543 unsigned long flags; 544 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 545 int queue = info->hw_queue; 546 547 if (WARN_ON(!info->control.vif)) { 548 ieee80211_free_txskb(&local->hw, skb); 549 return; 550 } 551 552 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 553 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 554 false); 555 __skb_queue_tail(&local->pending[queue], skb); 556 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 557 false, &flags); 558 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 559 } 560 561 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 562 struct sk_buff_head *skbs) 563 { 564 struct ieee80211_hw *hw = &local->hw; 565 struct sk_buff *skb; 566 unsigned long flags; 567 int queue, i; 568 569 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 570 while ((skb = skb_dequeue(skbs))) { 571 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 572 573 if (WARN_ON(!info->control.vif)) { 574 ieee80211_free_txskb(&local->hw, skb); 575 continue; 576 } 577 578 queue = info->hw_queue; 579 580 __ieee80211_stop_queue(hw, queue, 581 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 582 false); 583 584 __skb_queue_tail(&local->pending[queue], skb); 585 } 586 587 for (i = 0; i < hw->queues; i++) 588 __ieee80211_wake_queue(hw, i, 589 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 590 false, &flags); 591 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 592 } 593 594 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 595 unsigned long queues, 596 enum queue_stop_reason reason, 597 bool refcounted) 598 { 599 struct ieee80211_local *local = hw_to_local(hw); 600 unsigned long flags; 601 int i; 602 603 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 604 605 for_each_set_bit(i, &queues, hw->queues) 606 __ieee80211_stop_queue(hw, i, reason, refcounted); 607 608 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 609 } 610 611 void ieee80211_stop_queues(struct ieee80211_hw *hw) 612 { 613 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 614 IEEE80211_QUEUE_STOP_REASON_DRIVER, 615 false); 616 } 617 EXPORT_SYMBOL(ieee80211_stop_queues); 618 619 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) 620 { 621 struct ieee80211_local *local = hw_to_local(hw); 622 unsigned long flags; 623 int ret; 624 625 if (WARN_ON(queue >= hw->queues)) 626 return true; 627 628 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 629 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, 630 &local->queue_stop_reasons[queue]); 631 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 632 return ret; 633 } 634 EXPORT_SYMBOL(ieee80211_queue_stopped); 635 636 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 637 unsigned long queues, 638 enum queue_stop_reason reason, 639 bool refcounted) 640 { 641 struct ieee80211_local *local = hw_to_local(hw); 642 unsigned long flags; 643 int i; 644 645 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 646 647 for_each_set_bit(i, &queues, hw->queues) 648 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags); 649 650 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 651 } 652 653 void ieee80211_wake_queues(struct ieee80211_hw *hw) 654 { 655 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 656 IEEE80211_QUEUE_STOP_REASON_DRIVER, 657 false); 658 } 659 EXPORT_SYMBOL(ieee80211_wake_queues); 660 661 unsigned int 662 ieee80211_get_vif_queues(struct ieee80211_local *local, 663 struct ieee80211_sub_if_data *sdata) 664 { 665 unsigned int queues; 666 667 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) { 668 int ac; 669 670 queues = 0; 671 672 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 673 if (sdata->vif.hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 674 queues |= BIT(sdata->vif.hw_queue[ac]); 675 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) 676 queues |= BIT(sdata->vif.cab_queue); 677 } else { 678 /* all queues */ 679 queues = BIT(local->hw.queues) - 1; 680 } 681 682 return queues; 683 } 684 685 void __ieee80211_flush_queues(struct ieee80211_local *local, 686 struct ieee80211_sub_if_data *sdata, 687 unsigned int queues, bool drop) 688 { 689 if (!local->ops->flush && !drop) 690 return; 691 692 /* 693 * If no queue was set, or if the HW doesn't support 694 * IEEE80211_HW_QUEUE_CONTROL - flush all queues 695 */ 696 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) 697 queues = ieee80211_get_vif_queues(local, sdata); 698 699 ieee80211_stop_queues_by_reason(&local->hw, queues, 700 IEEE80211_QUEUE_STOP_REASON_FLUSH, 701 false); 702 703 if (drop) { 704 struct sta_info *sta; 705 706 /* Purge the queues, so the frames on them won't be 707 * sent during __ieee80211_wake_queue() 708 */ 709 list_for_each_entry(sta, &local->sta_list, list) { 710 if (sdata != sta->sdata) 711 continue; 712 ieee80211_purge_sta_txqs(sta); 713 } 714 } 715 716 if (local->ops->flush) 717 drv_flush(local, sdata, queues, drop); 718 719 ieee80211_wake_queues_by_reason(&local->hw, queues, 720 IEEE80211_QUEUE_STOP_REASON_FLUSH, 721 false); 722 } 723 724 void ieee80211_flush_queues(struct ieee80211_local *local, 725 struct ieee80211_sub_if_data *sdata, bool drop) 726 { 727 __ieee80211_flush_queues(local, sdata, 0, drop); 728 } 729 730 static void __iterate_interfaces(struct ieee80211_local *local, 731 u32 iter_flags, 732 void (*iterator)(void *data, u8 *mac, 733 struct ieee80211_vif *vif), 734 void *data) 735 { 736 struct ieee80211_sub_if_data *sdata; 737 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; 738 739 list_for_each_entry_rcu(sdata, &local->interfaces, list, 740 lockdep_is_held(&local->iflist_mtx) || 741 lockdep_is_held(&local->hw.wiphy->mtx)) { 742 switch (sdata->vif.type) { 743 case NL80211_IFTYPE_MONITOR: 744 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) && 745 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 746 continue; 747 break; 748 case NL80211_IFTYPE_AP_VLAN: 749 continue; 750 default: 751 break; 752 } 753 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && 754 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 755 continue; 756 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) && 757 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 758 continue; 759 if (ieee80211_sdata_running(sdata) || !active_only) 760 iterator(data, sdata->vif.addr, 761 &sdata->vif); 762 } 763 764 sdata = rcu_dereference_check(local->monitor_sdata, 765 lockdep_is_held(&local->iflist_mtx) || 766 lockdep_is_held(&local->hw.wiphy->mtx)); 767 if (sdata && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) && 768 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || 769 sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 770 iterator(data, sdata->vif.addr, &sdata->vif); 771 } 772 773 void ieee80211_iterate_interfaces( 774 struct ieee80211_hw *hw, u32 iter_flags, 775 void (*iterator)(void *data, u8 *mac, 776 struct ieee80211_vif *vif), 777 void *data) 778 { 779 struct ieee80211_local *local = hw_to_local(hw); 780 781 mutex_lock(&local->iflist_mtx); 782 __iterate_interfaces(local, iter_flags, iterator, data); 783 mutex_unlock(&local->iflist_mtx); 784 } 785 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces); 786 787 void ieee80211_iterate_active_interfaces_atomic( 788 struct ieee80211_hw *hw, u32 iter_flags, 789 void (*iterator)(void *data, u8 *mac, 790 struct ieee80211_vif *vif), 791 void *data) 792 { 793 struct ieee80211_local *local = hw_to_local(hw); 794 795 rcu_read_lock(); 796 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 797 iterator, data); 798 rcu_read_unlock(); 799 } 800 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); 801 802 struct ieee80211_vif * 803 __ieee80211_iterate_interfaces(struct ieee80211_hw *hw, 804 struct ieee80211_vif *prev, 805 u32 iter_flags) 806 { 807 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; 808 struct ieee80211_sub_if_data *sdata = NULL, *monitor; 809 struct ieee80211_local *local = hw_to_local(hw); 810 811 lockdep_assert_wiphy(hw->wiphy); 812 813 if (prev) 814 sdata = vif_to_sdata(prev); 815 816 monitor = rcu_dereference_check(local->monitor_sdata, 817 lockdep_is_held(&hw->wiphy->mtx)); 818 if (monitor && monitor == sdata) 819 return NULL; 820 821 sdata = list_prepare_entry(sdata, &local->interfaces, list); 822 list_for_each_entry_continue(sdata, &local->interfaces, list) { 823 switch (sdata->vif.type) { 824 case NL80211_IFTYPE_MONITOR: 825 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) && 826 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 827 continue; 828 break; 829 case NL80211_IFTYPE_AP_VLAN: 830 continue; 831 default: 832 break; 833 } 834 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && 835 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 836 continue; 837 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) && 838 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 839 continue; 840 if (ieee80211_sdata_running(sdata) || !active_only) 841 return &sdata->vif; 842 } 843 844 if (monitor && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) && 845 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || 846 monitor->flags & IEEE80211_SDATA_IN_DRIVER)) 847 return &monitor->vif; 848 849 return NULL; 850 } 851 EXPORT_SYMBOL_GPL(__ieee80211_iterate_interfaces); 852 853 static void __iterate_stations(struct ieee80211_local *local, 854 void (*iterator)(void *data, 855 struct ieee80211_sta *sta), 856 void *data) 857 { 858 struct sta_info *sta; 859 860 list_for_each_entry_rcu(sta, &local->sta_list, list, 861 lockdep_is_held(&local->hw.wiphy->mtx)) { 862 if (!sta->uploaded) 863 continue; 864 865 iterator(data, &sta->sta); 866 } 867 } 868 869 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, 870 void (*iterator)(void *data, 871 struct ieee80211_sta *sta), 872 void *data) 873 { 874 struct ieee80211_local *local = hw_to_local(hw); 875 876 rcu_read_lock(); 877 __iterate_stations(local, iterator, data); 878 rcu_read_unlock(); 879 } 880 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic); 881 882 struct ieee80211_sta * 883 __ieee80211_iterate_stations(struct ieee80211_hw *hw, 884 struct ieee80211_sta *prev) 885 { 886 struct ieee80211_local *local = hw_to_local(hw); 887 struct sta_info *sta = NULL; 888 889 lockdep_assert_wiphy(local->hw.wiphy); 890 891 if (prev) 892 sta = container_of(prev, struct sta_info, sta); 893 894 sta = list_prepare_entry(sta, &local->sta_list, list); 895 list_for_each_entry_continue(sta, &local->sta_list, list) { 896 if (!sta->uploaded) 897 continue; 898 899 return &sta->sta; 900 } 901 902 return NULL; 903 } 904 EXPORT_SYMBOL_GPL(__ieee80211_iterate_stations); 905 906 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) 907 { 908 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 909 910 if (!ieee80211_sdata_running(sdata) || 911 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 912 return NULL; 913 return &sdata->vif; 914 } 915 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); 916 917 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif) 918 { 919 if (!vif) 920 return NULL; 921 922 return &vif_to_sdata(vif)->wdev; 923 } 924 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev); 925 926 /* 927 * Nothing should have been stuffed into the workqueue during 928 * the suspend->resume cycle. Since we can't check each caller 929 * of this function if we are already quiescing / suspended, 930 * check here and don't WARN since this can actually happen when 931 * the rx path (for example) is racing against __ieee80211_suspend 932 * and suspending / quiescing was set after the rx path checked 933 * them. 934 */ 935 static bool ieee80211_can_queue_work(struct ieee80211_local *local) 936 { 937 if (local->quiescing || (local->suspended && !local->resuming)) { 938 pr_warn("queueing ieee80211 work while going to suspend\n"); 939 return false; 940 } 941 942 return true; 943 } 944 945 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) 946 { 947 struct ieee80211_local *local = hw_to_local(hw); 948 949 if (!ieee80211_can_queue_work(local)) 950 return; 951 952 queue_work(local->workqueue, work); 953 } 954 EXPORT_SYMBOL(ieee80211_queue_work); 955 956 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, 957 struct delayed_work *dwork, 958 unsigned long delay) 959 { 960 struct ieee80211_local *local = hw_to_local(hw); 961 962 if (!ieee80211_can_queue_work(local)) 963 return; 964 965 queue_delayed_work(local->workqueue, dwork, delay); 966 } 967 EXPORT_SYMBOL(ieee80211_queue_delayed_work); 968 969 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 970 struct ieee80211_tx_queue_params 971 *qparam, int ac) 972 { 973 struct ieee80211_chanctx_conf *chanctx_conf; 974 const struct ieee80211_reg_rule *rrule; 975 const struct ieee80211_wmm_ac *wmm_ac; 976 u16 center_freq = 0; 977 978 if (sdata->vif.type != NL80211_IFTYPE_AP && 979 sdata->vif.type != NL80211_IFTYPE_STATION) 980 return; 981 982 rcu_read_lock(); 983 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 984 if (chanctx_conf) 985 center_freq = chanctx_conf->def.chan->center_freq; 986 987 if (!center_freq) { 988 rcu_read_unlock(); 989 return; 990 } 991 992 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq)); 993 994 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) { 995 rcu_read_unlock(); 996 return; 997 } 998 999 if (sdata->vif.type == NL80211_IFTYPE_AP) 1000 wmm_ac = &rrule->wmm_rule.ap[ac]; 1001 else 1002 wmm_ac = &rrule->wmm_rule.client[ac]; 1003 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min); 1004 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max); 1005 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn); 1006 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32); 1007 rcu_read_unlock(); 1008 } 1009 1010 void ieee80211_set_wmm_default(struct ieee80211_link_data *link, 1011 bool bss_notify, bool enable_qos) 1012 { 1013 struct ieee80211_sub_if_data *sdata = link->sdata; 1014 struct ieee80211_local *local = sdata->local; 1015 struct ieee80211_tx_queue_params qparam; 1016 struct ieee80211_chanctx_conf *chanctx_conf; 1017 int ac; 1018 bool use_11b; 1019 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ 1020 int aCWmin, aCWmax; 1021 1022 if (!local->ops->conf_tx) 1023 return; 1024 1025 if (local->hw.queues < IEEE80211_NUM_ACS) 1026 return; 1027 1028 memset(&qparam, 0, sizeof(qparam)); 1029 1030 rcu_read_lock(); 1031 chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 1032 use_11b = (chanctx_conf && 1033 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) && 1034 !link->operating_11g_mode; 1035 rcu_read_unlock(); 1036 1037 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); 1038 1039 /* Set defaults according to 802.11-2007 Table 7-37 */ 1040 aCWmax = 1023; 1041 if (use_11b) 1042 aCWmin = 31; 1043 else 1044 aCWmin = 15; 1045 1046 /* Configure old 802.11b/g medium access rules. */ 1047 qparam.cw_max = aCWmax; 1048 qparam.cw_min = aCWmin; 1049 qparam.txop = 0; 1050 qparam.aifs = 2; 1051 1052 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 1053 /* Update if QoS is enabled. */ 1054 if (enable_qos) { 1055 switch (ac) { 1056 case IEEE80211_AC_BK: 1057 qparam.cw_max = aCWmax; 1058 qparam.cw_min = aCWmin; 1059 qparam.txop = 0; 1060 if (is_ocb) 1061 qparam.aifs = 9; 1062 else 1063 qparam.aifs = 7; 1064 break; 1065 /* never happens but let's not leave undefined */ 1066 default: 1067 case IEEE80211_AC_BE: 1068 qparam.cw_max = aCWmax; 1069 qparam.cw_min = aCWmin; 1070 qparam.txop = 0; 1071 if (is_ocb) 1072 qparam.aifs = 6; 1073 else 1074 qparam.aifs = 3; 1075 break; 1076 case IEEE80211_AC_VI: 1077 qparam.cw_max = aCWmin; 1078 qparam.cw_min = (aCWmin + 1) / 2 - 1; 1079 if (is_ocb) 1080 qparam.txop = 0; 1081 else if (use_11b) 1082 qparam.txop = 6016/32; 1083 else 1084 qparam.txop = 3008/32; 1085 1086 if (is_ocb) 1087 qparam.aifs = 3; 1088 else 1089 qparam.aifs = 2; 1090 break; 1091 case IEEE80211_AC_VO: 1092 qparam.cw_max = (aCWmin + 1) / 2 - 1; 1093 qparam.cw_min = (aCWmin + 1) / 4 - 1; 1094 if (is_ocb) 1095 qparam.txop = 0; 1096 else if (use_11b) 1097 qparam.txop = 3264/32; 1098 else 1099 qparam.txop = 1504/32; 1100 qparam.aifs = 2; 1101 break; 1102 } 1103 } 1104 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac); 1105 1106 qparam.uapsd = false; 1107 1108 link->tx_conf[ac] = qparam; 1109 drv_conf_tx(local, link, ac, &qparam); 1110 } 1111 1112 if (sdata->vif.type != NL80211_IFTYPE_MONITOR && 1113 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 1114 sdata->vif.type != NL80211_IFTYPE_NAN) { 1115 link->conf->qos = enable_qos; 1116 if (bss_notify) 1117 ieee80211_link_info_change_notify(sdata, link, 1118 BSS_CHANGED_QOS); 1119 } 1120 } 1121 1122 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1123 u16 transaction, u16 auth_alg, u16 status, 1124 const u8 *extra, size_t extra_len, const u8 *da, 1125 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, 1126 u32 tx_flags) 1127 { 1128 struct ieee80211_local *local = sdata->local; 1129 struct sk_buff *skb; 1130 struct ieee80211_mgmt *mgmt; 1131 bool multi_link = ieee80211_vif_is_mld(&sdata->vif); 1132 struct { 1133 u8 id; 1134 u8 len; 1135 u8 ext_id; 1136 struct ieee80211_multi_link_elem ml; 1137 struct ieee80211_mle_basic_common_info basic; 1138 } __packed mle = { 1139 .id = WLAN_EID_EXTENSION, 1140 .len = sizeof(mle) - 2, 1141 .ext_id = WLAN_EID_EXT_EHT_MULTI_LINK, 1142 .ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC), 1143 .basic.len = sizeof(mle.basic), 1144 }; 1145 bool add_mle; 1146 int err; 1147 1148 add_mle = (multi_link && 1149 !cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_MULTI_LINK, 1150 extra, extra_len)); 1151 1152 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ 1153 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + 1154 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN + 1155 add_mle * sizeof(mle)); 1156 if (!skb) 1157 return; 1158 1159 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); 1160 1161 mgmt = skb_put_zero(skb, 24 + 6); 1162 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 1163 IEEE80211_STYPE_AUTH); 1164 memcpy(mgmt->da, da, ETH_ALEN); 1165 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 1166 memcpy(mgmt->bssid, bssid, ETH_ALEN); 1167 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); 1168 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); 1169 mgmt->u.auth.status_code = cpu_to_le16(status); 1170 if (extra) 1171 skb_put_data(skb, extra, extra_len); 1172 1173 if (add_mle) { 1174 memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN); 1175 skb_put_data(skb, &mle, sizeof(mle)); 1176 } 1177 1178 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { 1179 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 1180 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); 1181 if (WARN_ON(err)) { 1182 kfree_skb(skb); 1183 return; 1184 } 1185 } 1186 1187 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | 1188 tx_flags; 1189 ieee80211_tx_skb(sdata, skb); 1190 } 1191 1192 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1193 const u8 *da, const u8 *bssid, 1194 u16 stype, u16 reason, 1195 bool send_frame, u8 *frame_buf) 1196 { 1197 struct ieee80211_local *local = sdata->local; 1198 struct sk_buff *skb; 1199 struct ieee80211_mgmt *mgmt = (void *)frame_buf; 1200 1201 /* build frame */ 1202 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); 1203 mgmt->duration = 0; /* initialize only */ 1204 mgmt->seq_ctrl = 0; /* initialize only */ 1205 memcpy(mgmt->da, da, ETH_ALEN); 1206 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 1207 memcpy(mgmt->bssid, bssid, ETH_ALEN); 1208 /* u.deauth.reason_code == u.disassoc.reason_code */ 1209 mgmt->u.deauth.reason_code = cpu_to_le16(reason); 1210 1211 if (send_frame) { 1212 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 1213 IEEE80211_DEAUTH_FRAME_LEN); 1214 if (!skb) 1215 return; 1216 1217 skb_reserve(skb, local->hw.extra_tx_headroom); 1218 1219 /* copy in frame */ 1220 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN); 1221 1222 if (sdata->vif.type != NL80211_IFTYPE_STATION || 1223 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) 1224 IEEE80211_SKB_CB(skb)->flags |= 1225 IEEE80211_TX_INTFL_DONT_ENCRYPT; 1226 1227 ieee80211_tx_skb(sdata, skb); 1228 } 1229 } 1230 1231 static int ieee80211_put_s1g_cap(struct sk_buff *skb, 1232 struct ieee80211_sta_s1g_cap *s1g_cap) 1233 { 1234 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_s1g_cap)) 1235 return -ENOBUFS; 1236 1237 skb_put_u8(skb, WLAN_EID_S1G_CAPABILITIES); 1238 skb_put_u8(skb, sizeof(struct ieee80211_s1g_cap)); 1239 1240 skb_put_data(skb, &s1g_cap->cap, sizeof(s1g_cap->cap)); 1241 skb_put_data(skb, &s1g_cap->nss_mcs, sizeof(s1g_cap->nss_mcs)); 1242 1243 return 0; 1244 } 1245 1246 static int ieee80211_put_preq_ies_band(struct sk_buff *skb, 1247 struct ieee80211_sub_if_data *sdata, 1248 const u8 *ie, size_t ie_len, 1249 size_t *offset, 1250 enum nl80211_band band, 1251 u32 rate_mask, 1252 struct cfg80211_chan_def *chandef, 1253 u32 flags) 1254 { 1255 struct ieee80211_local *local = sdata->local; 1256 struct ieee80211_supported_band *sband; 1257 int i, err; 1258 size_t noffset; 1259 bool have_80mhz = false; 1260 1261 *offset = 0; 1262 1263 sband = local->hw.wiphy->bands[band]; 1264 if (WARN_ON_ONCE(!sband)) 1265 return 0; 1266 1267 /* For direct scan add S1G IE and consider its override bits */ 1268 if (band == NL80211_BAND_S1GHZ) 1269 return ieee80211_put_s1g_cap(skb, &sband->s1g_cap); 1270 1271 err = ieee80211_put_srates_elem(skb, sband, 0, 1272 ~rate_mask, WLAN_EID_SUPP_RATES); 1273 if (err) 1274 return err; 1275 1276 /* insert "request information" if in custom IEs */ 1277 if (ie && ie_len) { 1278 static const u8 before_extrates[] = { 1279 WLAN_EID_SSID, 1280 WLAN_EID_SUPP_RATES, 1281 WLAN_EID_REQUEST, 1282 }; 1283 noffset = ieee80211_ie_split(ie, ie_len, 1284 before_extrates, 1285 ARRAY_SIZE(before_extrates), 1286 *offset); 1287 if (skb_tailroom(skb) < noffset - *offset) 1288 return -ENOBUFS; 1289 skb_put_data(skb, ie + *offset, noffset - *offset); 1290 *offset = noffset; 1291 } 1292 1293 err = ieee80211_put_srates_elem(skb, sband, 0, 1294 ~rate_mask, WLAN_EID_EXT_SUPP_RATES); 1295 if (err) 1296 return err; 1297 1298 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) { 1299 if (skb_tailroom(skb) < 3) 1300 return -ENOBUFS; 1301 skb_put_u8(skb, WLAN_EID_DS_PARAMS); 1302 skb_put_u8(skb, 1); 1303 skb_put_u8(skb, 1304 ieee80211_frequency_to_channel(chandef->chan->center_freq)); 1305 } 1306 1307 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT) 1308 return 0; 1309 1310 /* insert custom IEs that go before HT */ 1311 if (ie && ie_len) { 1312 static const u8 before_ht[] = { 1313 /* 1314 * no need to list the ones split off already 1315 * (or generated here) 1316 */ 1317 WLAN_EID_DS_PARAMS, 1318 WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 1319 }; 1320 noffset = ieee80211_ie_split(ie, ie_len, 1321 before_ht, ARRAY_SIZE(before_ht), 1322 *offset); 1323 if (skb_tailroom(skb) < noffset - *offset) 1324 return -ENOBUFS; 1325 skb_put_data(skb, ie + *offset, noffset - *offset); 1326 *offset = noffset; 1327 } 1328 1329 if (sband->ht_cap.ht_supported) { 1330 u8 *pos; 1331 1332 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap)) 1333 return -ENOBUFS; 1334 1335 pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_cap)); 1336 ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, 1337 sband->ht_cap.cap); 1338 } 1339 1340 /* insert custom IEs that go before VHT */ 1341 if (ie && ie_len) { 1342 static const u8 before_vht[] = { 1343 /* 1344 * no need to list the ones split off already 1345 * (or generated here) 1346 */ 1347 WLAN_EID_BSS_COEX_2040, 1348 WLAN_EID_EXT_CAPABILITY, 1349 WLAN_EID_SSID_LIST, 1350 WLAN_EID_CHANNEL_USAGE, 1351 WLAN_EID_INTERWORKING, 1352 WLAN_EID_MESH_ID, 1353 /* 60 GHz (Multi-band, DMG, MMS) can't happen */ 1354 }; 1355 noffset = ieee80211_ie_split(ie, ie_len, 1356 before_vht, ARRAY_SIZE(before_vht), 1357 *offset); 1358 if (skb_tailroom(skb) < noffset - *offset) 1359 return -ENOBUFS; 1360 skb_put_data(skb, ie + *offset, noffset - *offset); 1361 *offset = noffset; 1362 } 1363 1364 /* Check if any channel in this sband supports at least 80 MHz */ 1365 for (i = 0; i < sband->n_channels; i++) { 1366 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | 1367 IEEE80211_CHAN_NO_80MHZ)) 1368 continue; 1369 1370 have_80mhz = true; 1371 break; 1372 } 1373 1374 if (sband->vht_cap.vht_supported && have_80mhz) { 1375 u8 *pos; 1376 1377 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_vht_cap)) 1378 return -ENOBUFS; 1379 1380 pos = skb_put(skb, 2 + sizeof(struct ieee80211_vht_cap)); 1381 ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, 1382 sband->vht_cap.cap); 1383 } 1384 1385 /* insert custom IEs that go before HE */ 1386 if (ie && ie_len) { 1387 static const u8 before_he[] = { 1388 /* 1389 * no need to list the ones split off before VHT 1390 * or generated here 1391 */ 1392 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS, 1393 WLAN_EID_AP_CSN, 1394 /* TODO: add 11ah/11aj/11ak elements */ 1395 }; 1396 noffset = ieee80211_ie_split(ie, ie_len, 1397 before_he, ARRAY_SIZE(before_he), 1398 *offset); 1399 if (skb_tailroom(skb) < noffset - *offset) 1400 return -ENOBUFS; 1401 skb_put_data(skb, ie + *offset, noffset - *offset); 1402 *offset = noffset; 1403 } 1404 1405 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 1406 IEEE80211_CHAN_NO_HE)) { 1407 err = ieee80211_put_he_cap(skb, sdata, sband, NULL); 1408 if (err) 1409 return err; 1410 } 1411 1412 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 1413 IEEE80211_CHAN_NO_HE | 1414 IEEE80211_CHAN_NO_EHT)) { 1415 err = ieee80211_put_eht_cap(skb, sdata, sband, NULL); 1416 if (err) 1417 return err; 1418 } 1419 1420 err = ieee80211_put_he_6ghz_cap(skb, sdata, IEEE80211_SMPS_OFF); 1421 if (err) 1422 return err; 1423 1424 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 1425 IEEE80211_CHAN_NO_UHR)) { 1426 err = ieee80211_put_uhr_cap(skb, sdata, sband); 1427 if (err) 1428 return err; 1429 } 1430 1431 /* 1432 * If adding more here, adjust code in main.c 1433 * that calculates local->scan_ies_len. 1434 */ 1435 1436 return 0; 1437 } 1438 1439 static int ieee80211_put_preq_ies(struct sk_buff *skb, 1440 struct ieee80211_sub_if_data *sdata, 1441 struct ieee80211_scan_ies *ie_desc, 1442 const u8 *ie, size_t ie_len, 1443 u8 bands_used, u32 *rate_masks, 1444 struct cfg80211_chan_def *chandef, 1445 u32 flags) 1446 { 1447 size_t custom_ie_offset = 0; 1448 int i, err; 1449 1450 memset(ie_desc, 0, sizeof(*ie_desc)); 1451 1452 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1453 if (bands_used & BIT(i)) { 1454 ie_desc->ies[i] = skb_tail_pointer(skb); 1455 err = ieee80211_put_preq_ies_band(skb, sdata, 1456 ie, ie_len, 1457 &custom_ie_offset, 1458 i, rate_masks[i], 1459 chandef, flags); 1460 if (err) 1461 return err; 1462 ie_desc->len[i] = skb_tail_pointer(skb) - 1463 ie_desc->ies[i]; 1464 } 1465 } 1466 1467 /* add any remaining custom IEs */ 1468 if (ie && ie_len) { 1469 if (WARN_ONCE(skb_tailroom(skb) < ie_len - custom_ie_offset, 1470 "not enough space for preq custom IEs\n")) 1471 return -ENOBUFS; 1472 ie_desc->common_ies = skb_tail_pointer(skb); 1473 skb_put_data(skb, ie + custom_ie_offset, 1474 ie_len - custom_ie_offset); 1475 ie_desc->common_ie_len = skb_tail_pointer(skb) - 1476 ie_desc->common_ies; 1477 } 1478 1479 return 0; 1480 }; 1481 1482 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 1483 size_t buffer_len, 1484 struct ieee80211_scan_ies *ie_desc, 1485 const u8 *ie, size_t ie_len, 1486 u8 bands_used, u32 *rate_masks, 1487 struct cfg80211_chan_def *chandef, 1488 u32 flags) 1489 { 1490 struct sk_buff *skb = alloc_skb(buffer_len, GFP_KERNEL); 1491 uintptr_t offs; 1492 int ret, i; 1493 u8 *start; 1494 1495 if (!skb) 1496 return -ENOMEM; 1497 1498 start = skb_tail_pointer(skb); 1499 memset(start, 0, skb_tailroom(skb)); 1500 ret = ieee80211_put_preq_ies(skb, sdata, ie_desc, ie, ie_len, 1501 bands_used, rate_masks, chandef, 1502 flags); 1503 if (ret < 0) { 1504 goto out; 1505 } 1506 1507 if (skb->len > buffer_len) { 1508 ret = -ENOBUFS; 1509 goto out; 1510 } 1511 1512 memcpy(buffer, start, skb->len); 1513 1514 /* adjust ie_desc for copy */ 1515 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1516 offs = ie_desc->ies[i] - start; 1517 ie_desc->ies[i] = buffer + offs; 1518 } 1519 offs = ie_desc->common_ies - start; 1520 ie_desc->common_ies = buffer + offs; 1521 1522 ret = skb->len; 1523 out: 1524 consume_skb(skb); 1525 return ret; 1526 } 1527 1528 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1529 const u8 *src, const u8 *dst, 1530 u32 ratemask, 1531 struct ieee80211_channel *chan, 1532 const u8 *ssid, size_t ssid_len, 1533 const u8 *ie, size_t ie_len, 1534 u32 flags) 1535 { 1536 struct ieee80211_local *local = sdata->local; 1537 struct cfg80211_chan_def chandef; 1538 struct sk_buff *skb; 1539 struct ieee80211_mgmt *mgmt; 1540 u32 rate_masks[NUM_NL80211_BANDS] = {}; 1541 struct ieee80211_scan_ies dummy_ie_desc; 1542 1543 /* 1544 * Do not send DS Channel parameter for directed probe requests 1545 * in order to maximize the chance that we get a response. Some 1546 * badly-behaved APs don't respond when this parameter is included. 1547 */ 1548 chandef.width = sdata->vif.bss_conf.chanreq.oper.width; 1549 if (flags & IEEE80211_PROBE_FLAG_DIRECTED) 1550 chandef.chan = NULL; 1551 else 1552 chandef.chan = chan; 1553 1554 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len, 1555 local->scan_ies_len + ie_len); 1556 if (!skb) 1557 return NULL; 1558 1559 rate_masks[chan->band] = ratemask; 1560 ieee80211_put_preq_ies(skb, sdata, &dummy_ie_desc, 1561 ie, ie_len, BIT(chan->band), 1562 rate_masks, &chandef, flags); 1563 1564 if (dst) { 1565 mgmt = (struct ieee80211_mgmt *) skb->data; 1566 memcpy(mgmt->da, dst, ETH_ALEN); 1567 memcpy(mgmt->bssid, dst, ETH_ALEN); 1568 } 1569 1570 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 1571 1572 return skb; 1573 } 1574 1575 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1576 struct ieee802_11_elems *elems, 1577 enum nl80211_band band, u32 *basic_rates) 1578 { 1579 struct ieee80211_supported_band *sband; 1580 size_t num_rates; 1581 u32 supp_rates; 1582 int i, j; 1583 1584 sband = sdata->local->hw.wiphy->bands[band]; 1585 if (WARN_ON(!sband)) 1586 return 1; 1587 1588 num_rates = sband->n_bitrates; 1589 supp_rates = 0; 1590 for (i = 0; i < elems->supp_rates_len + 1591 elems->ext_supp_rates_len; i++) { 1592 u8 rate = 0; 1593 int own_rate; 1594 bool is_basic; 1595 if (i < elems->supp_rates_len) 1596 rate = elems->supp_rates[i]; 1597 else if (elems->ext_supp_rates) 1598 rate = elems->ext_supp_rates 1599 [i - elems->supp_rates_len]; 1600 own_rate = 5 * (rate & 0x7f); 1601 is_basic = !!(rate & 0x80); 1602 1603 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 1604 continue; 1605 1606 for (j = 0; j < num_rates; j++) { 1607 int brate = sband->bitrates[j].bitrate; 1608 1609 if (brate == own_rate) { 1610 supp_rates |= BIT(j); 1611 if (basic_rates && is_basic) 1612 *basic_rates |= BIT(j); 1613 } 1614 } 1615 } 1616 return supp_rates; 1617 } 1618 1619 void ieee80211_stop_device(struct ieee80211_local *local, bool suspend) 1620 { 1621 local_bh_disable(); 1622 ieee80211_handle_queued_frames(local); 1623 local_bh_enable(); 1624 1625 ieee80211_led_radio(local, false); 1626 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); 1627 1628 wiphy_work_cancel(local->hw.wiphy, &local->reconfig_filter); 1629 1630 flush_workqueue(local->workqueue); 1631 wiphy_work_flush(local->hw.wiphy, NULL); 1632 drv_stop(local, suspend); 1633 } 1634 1635 static void ieee80211_flush_completed_scan(struct ieee80211_local *local, 1636 bool aborted) 1637 { 1638 /* It's possible that we don't handle the scan completion in 1639 * time during suspend, so if it's still marked as completed 1640 * here, queue the work and flush it to clean things up. 1641 * Instead of calling the worker function directly here, we 1642 * really queue it to avoid potential races with other flows 1643 * scheduling the same work. 1644 */ 1645 if (test_bit(SCAN_COMPLETED, &local->scanning)) { 1646 /* If coming from reconfiguration failure, abort the scan so 1647 * we don't attempt to continue a partial HW scan - which is 1648 * possible otherwise if (e.g.) the 2.4 GHz portion was the 1649 * completed scan, and a 5 GHz portion is still pending. 1650 */ 1651 if (aborted) 1652 set_bit(SCAN_ABORTED, &local->scanning); 1653 wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work, 0); 1654 wiphy_delayed_work_flush(local->hw.wiphy, &local->scan_work); 1655 } 1656 } 1657 1658 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) 1659 { 1660 struct ieee80211_sub_if_data *sdata; 1661 struct ieee80211_chanctx *ctx; 1662 1663 lockdep_assert_wiphy(local->hw.wiphy); 1664 1665 /* 1666 * We get here if during resume the device can't be restarted properly. 1667 * We might also get here if this happens during HW reset, which is a 1668 * slightly different situation and we need to drop all connections in 1669 * the latter case. 1670 * 1671 * Ask cfg80211 to turn off all interfaces, this will result in more 1672 * warnings but at least we'll then get into a clean stopped state. 1673 */ 1674 1675 local->resuming = false; 1676 local->suspended = false; 1677 local->in_reconfig = false; 1678 local->reconfig_failure = true; 1679 1680 ieee80211_flush_completed_scan(local, true); 1681 1682 /* scheduled scan clearly can't be running any more, but tell 1683 * cfg80211 and clear local state 1684 */ 1685 ieee80211_sched_scan_end(local); 1686 1687 list_for_each_entry(sdata, &local->interfaces, list) 1688 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; 1689 1690 /* Mark channel contexts as not being in the driver any more to avoid 1691 * removing them from the driver during the shutdown process... 1692 */ 1693 list_for_each_entry(ctx, &local->chanctx_list, list) 1694 ctx->driver_present = false; 1695 } 1696 1697 static void ieee80211_assign_chanctx(struct ieee80211_local *local, 1698 struct ieee80211_sub_if_data *sdata, 1699 struct ieee80211_link_data *link) 1700 { 1701 struct ieee80211_chanctx_conf *conf; 1702 struct ieee80211_chanctx *ctx; 1703 1704 lockdep_assert_wiphy(local->hw.wiphy); 1705 1706 conf = rcu_dereference_protected(link->conf->chanctx_conf, 1707 lockdep_is_held(&local->hw.wiphy->mtx)); 1708 if (conf) { 1709 ctx = container_of(conf, struct ieee80211_chanctx, conf); 1710 drv_assign_vif_chanctx(local, sdata, link->conf, ctx); 1711 } 1712 } 1713 1714 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata) 1715 { 1716 struct ieee80211_local *local = sdata->local; 1717 struct sta_info *sta; 1718 1719 lockdep_assert_wiphy(local->hw.wiphy); 1720 1721 /* add STAs back */ 1722 list_for_each_entry(sta, &local->sta_list, list) { 1723 enum ieee80211_sta_state state; 1724 1725 if (!sta->uploaded || sta->sdata != sdata) 1726 continue; 1727 1728 for (state = IEEE80211_STA_NOTEXIST; 1729 state < sta->sta_state; state++) 1730 WARN_ON(drv_sta_state(local, sta->sdata, sta, state, 1731 state + 1)); 1732 } 1733 } 1734 1735 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata) 1736 { 1737 struct cfg80211_nan_func *func, **funcs; 1738 int res, id, i = 0; 1739 1740 res = drv_start_nan(sdata->local, sdata, 1741 &sdata->u.nan.conf); 1742 if (WARN_ON(res)) 1743 return res; 1744 1745 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1, 1746 sizeof(*funcs), 1747 GFP_KERNEL); 1748 if (!funcs) 1749 return -ENOMEM; 1750 1751 /* Add all the functions: 1752 * This is a little bit ugly. We need to call a potentially sleeping 1753 * callback for each NAN function, so we can't hold the spinlock. 1754 */ 1755 spin_lock_bh(&sdata->u.nan.func_lock); 1756 1757 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) 1758 funcs[i++] = func; 1759 1760 spin_unlock_bh(&sdata->u.nan.func_lock); 1761 1762 for (i = 0; funcs[i]; i++) { 1763 res = drv_add_nan_func(sdata->local, sdata, funcs[i]); 1764 if (WARN_ON(res)) 1765 ieee80211_nan_func_terminated(&sdata->vif, 1766 funcs[i]->instance_id, 1767 NL80211_NAN_FUNC_TERM_REASON_ERROR, 1768 GFP_KERNEL); 1769 } 1770 1771 kfree(funcs); 1772 1773 return 0; 1774 } 1775 1776 static void ieee80211_reconfig_ap_links(struct ieee80211_local *local, 1777 struct ieee80211_sub_if_data *sdata, 1778 u64 changed) 1779 { 1780 int link_id; 1781 1782 for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { 1783 struct ieee80211_link_data *link; 1784 1785 if (!(sdata->vif.active_links & BIT(link_id))) 1786 continue; 1787 1788 link = sdata_dereference(sdata->link[link_id], sdata); 1789 if (!link) 1790 continue; 1791 1792 if (rcu_access_pointer(link->u.ap.beacon)) 1793 drv_start_ap(local, sdata, link->conf); 1794 1795 if (!link->conf->enable_beacon) 1796 continue; 1797 1798 changed |= BSS_CHANGED_BEACON | 1799 BSS_CHANGED_BEACON_ENABLED; 1800 1801 ieee80211_link_info_change_notify(sdata, link, changed); 1802 } 1803 } 1804 1805 int ieee80211_reconfig(struct ieee80211_local *local) 1806 { 1807 struct ieee80211_hw *hw = &local->hw; 1808 struct ieee80211_sub_if_data *sdata; 1809 struct ieee80211_chanctx *ctx; 1810 struct sta_info *sta; 1811 int res, i; 1812 bool reconfig_due_to_wowlan = false; 1813 struct ieee80211_sub_if_data *sched_scan_sdata; 1814 struct cfg80211_sched_scan_request *sched_scan_req; 1815 bool sched_scan_stopped = false; 1816 bool suspended = local->suspended; 1817 bool in_reconfig = false; 1818 1819 lockdep_assert_wiphy(local->hw.wiphy); 1820 1821 /* nothing to do if HW shouldn't run */ 1822 if (!local->open_count) 1823 goto wake_up; 1824 1825 #ifdef CONFIG_PM 1826 if (suspended) 1827 local->resuming = true; 1828 1829 if (local->wowlan) { 1830 /* 1831 * In the wowlan case, both mac80211 and the device 1832 * are functional when the resume op is called, so 1833 * clear local->suspended so the device could operate 1834 * normally (e.g. pass rx frames). 1835 */ 1836 local->suspended = false; 1837 res = drv_resume(local); 1838 local->wowlan = false; 1839 if (res < 0) { 1840 local->resuming = false; 1841 return res; 1842 } 1843 if (res == 0) 1844 goto wake_up; 1845 WARN_ON(res > 1); 1846 /* 1847 * res is 1, which means the driver requested 1848 * to go through a regular reset on wakeup. 1849 * restore local->suspended in this case. 1850 */ 1851 reconfig_due_to_wowlan = true; 1852 local->suspended = true; 1853 } 1854 #endif 1855 1856 /* 1857 * In case of hw_restart during suspend (without wowlan), 1858 * cancel restart work, as we are reconfiguring the device 1859 * anyway. 1860 * Note that restart_work is scheduled on a frozen workqueue, 1861 * so we can't deadlock in this case. 1862 */ 1863 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan) 1864 cancel_work_sync(&local->restart_work); 1865 1866 local->started = false; 1867 1868 /* 1869 * Upon resume hardware can sometimes be goofy due to 1870 * various platform / driver / bus issues, so restarting 1871 * the device may at times not work immediately. Propagate 1872 * the error. 1873 */ 1874 res = drv_start(local); 1875 if (res) { 1876 if (suspended) 1877 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); 1878 else 1879 WARN(1, "Hardware became unavailable during restart.\n"); 1880 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 1881 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1882 false); 1883 ieee80211_handle_reconfig_failure(local); 1884 return res; 1885 } 1886 1887 /* setup fragmentation threshold */ 1888 drv_set_frag_threshold(local, -1, hw->wiphy->frag_threshold); 1889 1890 /* setup RTS threshold */ 1891 if (hw->wiphy->n_radio > 0) { 1892 for (i = 0; i < hw->wiphy->n_radio; i++) { 1893 u32 rts_threshold = 1894 hw->wiphy->radio_cfg[i].rts_threshold; 1895 1896 drv_set_rts_threshold(local, i, rts_threshold); 1897 } 1898 } else { 1899 drv_set_rts_threshold(local, -1, hw->wiphy->rts_threshold); 1900 } 1901 1902 /* reset coverage class */ 1903 drv_set_coverage_class(local, -1, hw->wiphy->coverage_class); 1904 1905 ieee80211_led_radio(local, true); 1906 ieee80211_mod_tpt_led_trig(local, 1907 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); 1908 1909 /* add interfaces */ 1910 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); 1911 if (sdata && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) { 1912 /* in HW restart it exists already */ 1913 WARN_ON(local->resuming); 1914 res = drv_add_interface(local, sdata); 1915 if (WARN_ON(res)) { 1916 RCU_INIT_POINTER(local->monitor_sdata, NULL); 1917 synchronize_net(); 1918 kfree(sdata); 1919 } 1920 } 1921 1922 list_for_each_entry(sdata, &local->interfaces, list) { 1923 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && 1924 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 1925 continue; 1926 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1927 ieee80211_sdata_running(sdata)) { 1928 res = drv_add_interface(local, sdata); 1929 if (WARN_ON(res)) 1930 break; 1931 } 1932 } 1933 1934 /* If adding any of the interfaces failed above, roll back and 1935 * report failure. 1936 */ 1937 if (res) { 1938 list_for_each_entry_continue_reverse(sdata, &local->interfaces, 1939 list) { 1940 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && 1941 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 1942 continue; 1943 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1944 ieee80211_sdata_running(sdata)) 1945 drv_remove_interface(local, sdata); 1946 } 1947 ieee80211_handle_reconfig_failure(local); 1948 return res; 1949 } 1950 1951 /* add channel contexts */ 1952 list_for_each_entry(ctx, &local->chanctx_list, list) 1953 if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER) 1954 WARN_ON(drv_add_chanctx(local, ctx)); 1955 1956 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); 1957 if (sdata && ieee80211_sdata_running(sdata)) 1958 ieee80211_assign_chanctx(local, sdata, &sdata->deflink); 1959 1960 /* reconfigure hardware */ 1961 ieee80211_hw_config(local, -1, IEEE80211_CONF_CHANGE_LISTEN_INTERVAL | 1962 IEEE80211_CONF_CHANGE_MONITOR | 1963 IEEE80211_CONF_CHANGE_PS | 1964 IEEE80211_CONF_CHANGE_RETRY_LIMITS | 1965 IEEE80211_CONF_CHANGE_IDLE); 1966 1967 ieee80211_configure_filter(local); 1968 1969 /* Finally also reconfigure all the BSS information */ 1970 list_for_each_entry(sdata, &local->interfaces, list) { 1971 /* common change flags for all interface types - link only */ 1972 u64 changed = BSS_CHANGED_ERP_CTS_PROT | 1973 BSS_CHANGED_ERP_PREAMBLE | 1974 BSS_CHANGED_ERP_SLOT | 1975 BSS_CHANGED_HT | 1976 BSS_CHANGED_BASIC_RATES | 1977 BSS_CHANGED_BEACON_INT | 1978 BSS_CHANGED_BSSID | 1979 BSS_CHANGED_CQM | 1980 BSS_CHANGED_QOS | 1981 BSS_CHANGED_TXPOWER | 1982 BSS_CHANGED_MCAST_RATE; 1983 struct ieee80211_link_data *link = NULL; 1984 unsigned int link_id; 1985 u32 active_links = 0; 1986 1987 if (!ieee80211_sdata_running(sdata)) 1988 continue; 1989 1990 if (ieee80211_vif_is_mld(&sdata->vif)) { 1991 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS] = { 1992 [0] = &sdata->vif.bss_conf, 1993 }; 1994 1995 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 1996 /* start with a single active link */ 1997 active_links = sdata->vif.active_links; 1998 link_id = ffs(active_links) - 1; 1999 sdata->vif.active_links = BIT(link_id); 2000 } 2001 2002 drv_change_vif_links(local, sdata, 0, 2003 sdata->vif.active_links, 2004 old); 2005 } 2006 2007 sdata->restart_active_links = active_links; 2008 2009 for (link_id = 0; 2010 link_id < ARRAY_SIZE(sdata->vif.link_conf); 2011 link_id++) { 2012 if (!ieee80211_vif_link_active(&sdata->vif, link_id)) 2013 continue; 2014 2015 link = sdata_dereference(sdata->link[link_id], sdata); 2016 if (!link) 2017 continue; 2018 2019 ieee80211_assign_chanctx(local, sdata, link); 2020 } 2021 2022 switch (sdata->vif.type) { 2023 case NL80211_IFTYPE_AP_VLAN: 2024 case NL80211_IFTYPE_MONITOR: 2025 break; 2026 case NL80211_IFTYPE_ADHOC: 2027 if (sdata->vif.cfg.ibss_joined) 2028 WARN_ON(drv_join_ibss(local, sdata)); 2029 fallthrough; 2030 default: 2031 ieee80211_reconfig_stations(sdata); 2032 fallthrough; 2033 case NL80211_IFTYPE_AP: /* AP stations are handled later */ 2034 for (i = 0; i < IEEE80211_NUM_ACS; i++) 2035 drv_conf_tx(local, &sdata->deflink, i, 2036 &sdata->deflink.tx_conf[i]); 2037 break; 2038 } 2039 2040 if (sdata->vif.bss_conf.mu_mimo_owner) 2041 changed |= BSS_CHANGED_MU_GROUPS; 2042 2043 if (!ieee80211_vif_is_mld(&sdata->vif)) 2044 changed |= BSS_CHANGED_IDLE; 2045 2046 switch (sdata->vif.type) { 2047 case NL80211_IFTYPE_STATION: 2048 if (!ieee80211_vif_is_mld(&sdata->vif)) { 2049 changed |= BSS_CHANGED_ASSOC | 2050 BSS_CHANGED_ARP_FILTER | 2051 BSS_CHANGED_PS; 2052 2053 /* Re-send beacon info report to the driver */ 2054 if (sdata->deflink.u.mgd.have_beacon) 2055 changed |= BSS_CHANGED_BEACON_INFO; 2056 2057 if (sdata->vif.bss_conf.max_idle_period || 2058 sdata->vif.bss_conf.protected_keep_alive) 2059 changed |= BSS_CHANGED_KEEP_ALIVE; 2060 2061 ieee80211_bss_info_change_notify(sdata, 2062 changed); 2063 } else if (!WARN_ON(!link)) { 2064 ieee80211_link_info_change_notify(sdata, link, 2065 changed); 2066 changed = BSS_CHANGED_ASSOC | 2067 BSS_CHANGED_IDLE | 2068 BSS_CHANGED_PS | 2069 BSS_CHANGED_ARP_FILTER; 2070 ieee80211_vif_cfg_change_notify(sdata, changed); 2071 } 2072 break; 2073 case NL80211_IFTYPE_OCB: 2074 changed |= BSS_CHANGED_OCB; 2075 ieee80211_bss_info_change_notify(sdata, changed); 2076 break; 2077 case NL80211_IFTYPE_ADHOC: 2078 changed |= BSS_CHANGED_IBSS; 2079 fallthrough; 2080 case NL80211_IFTYPE_AP: 2081 changed |= BSS_CHANGED_P2P_PS; 2082 2083 if (ieee80211_vif_is_mld(&sdata->vif)) 2084 ieee80211_vif_cfg_change_notify(sdata, 2085 BSS_CHANGED_SSID); 2086 else 2087 changed |= BSS_CHANGED_SSID; 2088 2089 if (sdata->vif.bss_conf.ftm_responder == 1 && 2090 wiphy_ext_feature_isset(sdata->local->hw.wiphy, 2091 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER)) 2092 changed |= BSS_CHANGED_FTM_RESPONDER; 2093 2094 if (sdata->vif.type == NL80211_IFTYPE_AP) { 2095 changed |= BSS_CHANGED_AP_PROBE_RESP; 2096 2097 if (ieee80211_vif_is_mld(&sdata->vif)) { 2098 ieee80211_reconfig_ap_links(local, 2099 sdata, 2100 changed); 2101 break; 2102 } 2103 2104 if (rcu_access_pointer(sdata->deflink.u.ap.beacon)) 2105 drv_start_ap(local, sdata, 2106 sdata->deflink.conf); 2107 } 2108 fallthrough; 2109 case NL80211_IFTYPE_MESH_POINT: 2110 if (sdata->vif.bss_conf.enable_beacon) { 2111 changed |= BSS_CHANGED_BEACON | 2112 BSS_CHANGED_BEACON_ENABLED; 2113 ieee80211_bss_info_change_notify(sdata, changed); 2114 } 2115 break; 2116 case NL80211_IFTYPE_NAN: 2117 res = ieee80211_reconfig_nan(sdata); 2118 if (res < 0) { 2119 ieee80211_handle_reconfig_failure(local); 2120 return res; 2121 } 2122 break; 2123 case NL80211_IFTYPE_AP_VLAN: 2124 case NL80211_IFTYPE_MONITOR: 2125 case NL80211_IFTYPE_P2P_DEVICE: 2126 /* nothing to do */ 2127 break; 2128 case NL80211_IFTYPE_UNSPECIFIED: 2129 case NUM_NL80211_IFTYPES: 2130 case NL80211_IFTYPE_P2P_CLIENT: 2131 case NL80211_IFTYPE_P2P_GO: 2132 case NL80211_IFTYPE_WDS: 2133 WARN_ON(1); 2134 break; 2135 } 2136 } 2137 2138 ieee80211_recalc_ps(local); 2139 2140 /* 2141 * The sta might be in psm against the ap (e.g. because 2142 * this was the state before a hw restart), so we 2143 * explicitly send a null packet in order to make sure 2144 * it'll sync against the ap (and get out of psm). 2145 */ 2146 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { 2147 list_for_each_entry(sdata, &local->interfaces, list) { 2148 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2149 continue; 2150 if (!sdata->u.mgd.associated) 2151 continue; 2152 2153 ieee80211_send_nullfunc(local, sdata, false); 2154 } 2155 } 2156 2157 /* APs are now beaconing, add back stations */ 2158 list_for_each_entry(sdata, &local->interfaces, list) { 2159 if (!ieee80211_sdata_running(sdata)) 2160 continue; 2161 2162 switch (sdata->vif.type) { 2163 case NL80211_IFTYPE_AP_VLAN: 2164 case NL80211_IFTYPE_AP: 2165 ieee80211_reconfig_stations(sdata); 2166 break; 2167 default: 2168 break; 2169 } 2170 } 2171 2172 /* add back keys */ 2173 list_for_each_entry(sdata, &local->interfaces, list) 2174 ieee80211_reenable_keys(sdata); 2175 2176 /* re-enable multi-link for client interfaces */ 2177 list_for_each_entry(sdata, &local->interfaces, list) { 2178 if (sdata->restart_active_links) 2179 ieee80211_set_active_links(&sdata->vif, 2180 sdata->restart_active_links); 2181 /* 2182 * If a link switch was scheduled before the restart, and ran 2183 * before reconfig, it will do nothing, so re-schedule. 2184 */ 2185 if (sdata->desired_active_links) 2186 wiphy_work_queue(sdata->local->hw.wiphy, 2187 &sdata->activate_links_work); 2188 } 2189 2190 /* Reconfigure sched scan if it was interrupted by FW restart */ 2191 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, 2192 lockdep_is_held(&local->hw.wiphy->mtx)); 2193 sched_scan_req = rcu_dereference_protected(local->sched_scan_req, 2194 lockdep_is_held(&local->hw.wiphy->mtx)); 2195 if (sched_scan_sdata && sched_scan_req) 2196 /* 2197 * Sched scan stopped, but we don't want to report it. Instead, 2198 * we're trying to reschedule. However, if more than one scan 2199 * plan was set, we cannot reschedule since we don't know which 2200 * scan plan was currently running (and some scan plans may have 2201 * already finished). 2202 */ 2203 if (sched_scan_req->n_scan_plans > 1 || 2204 __ieee80211_request_sched_scan_start(sched_scan_sdata, 2205 sched_scan_req)) { 2206 RCU_INIT_POINTER(local->sched_scan_sdata, NULL); 2207 RCU_INIT_POINTER(local->sched_scan_req, NULL); 2208 sched_scan_stopped = true; 2209 } 2210 2211 if (sched_scan_stopped) 2212 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0); 2213 2214 wake_up: 2215 /* 2216 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation 2217 * sessions can be established after a resume. 2218 * 2219 * Also tear down aggregation sessions since reconfiguring 2220 * them in a hardware restart scenario is not easily done 2221 * right now, and the hardware will have lost information 2222 * about the sessions, but we and the AP still think they 2223 * are active. This is really a workaround though. 2224 */ 2225 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { 2226 list_for_each_entry(sta, &local->sta_list, list) { 2227 if (!local->resuming) 2228 ieee80211_sta_tear_down_BA_sessions( 2229 sta, AGG_STOP_LOCAL_REQUEST); 2230 clear_sta_flag(sta, WLAN_STA_BLOCK_BA); 2231 } 2232 } 2233 2234 /* 2235 * If this is for hw restart things are still running. 2236 * We may want to change that later, however. 2237 */ 2238 if (local->open_count && (!suspended || reconfig_due_to_wowlan)) 2239 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART); 2240 2241 if (local->in_reconfig) { 2242 in_reconfig = local->in_reconfig; 2243 local->in_reconfig = false; 2244 barrier(); 2245 2246 ieee80211_reconfig_roc(local); 2247 2248 /* Requeue all works */ 2249 list_for_each_entry(sdata, &local->interfaces, list) { 2250 if (ieee80211_sdata_running(sdata)) 2251 wiphy_work_queue(local->hw.wiphy, &sdata->work); 2252 } 2253 } 2254 2255 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 2256 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 2257 false); 2258 2259 if (in_reconfig) { 2260 list_for_each_entry(sdata, &local->interfaces, list) { 2261 if (!ieee80211_sdata_running(sdata)) 2262 continue; 2263 if (sdata->vif.type == NL80211_IFTYPE_STATION) 2264 ieee80211_sta_restart(sdata); 2265 } 2266 } 2267 2268 /* Passing NULL means an interface is picked for configuration */ 2269 if (local->virt_monitors > 0 && 2270 local->virt_monitors == local->open_count) 2271 ieee80211_add_virtual_monitor(local, NULL); 2272 2273 if (!suspended) 2274 return 0; 2275 2276 #ifdef CONFIG_PM 2277 /* first set suspended false, then resuming */ 2278 local->suspended = false; 2279 mb(); 2280 local->resuming = false; 2281 2282 ieee80211_flush_completed_scan(local, false); 2283 2284 if (local->open_count && !reconfig_due_to_wowlan) 2285 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND); 2286 2287 list_for_each_entry(sdata, &local->interfaces, list) { 2288 if (!ieee80211_sdata_running(sdata)) 2289 continue; 2290 if (sdata->vif.type == NL80211_IFTYPE_STATION) 2291 ieee80211_sta_restart(sdata); 2292 } 2293 2294 mod_timer(&local->sta_cleanup, jiffies + 1); 2295 #else 2296 WARN_ON(1); 2297 #endif 2298 2299 return 0; 2300 } 2301 2302 static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag) 2303 { 2304 struct ieee80211_sub_if_data *sdata; 2305 struct ieee80211_local *local; 2306 struct ieee80211_key *key; 2307 2308 if (WARN_ON(!vif)) 2309 return; 2310 2311 sdata = vif_to_sdata(vif); 2312 local = sdata->local; 2313 2314 lockdep_assert_wiphy(local->hw.wiphy); 2315 2316 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME && 2317 !local->resuming)) 2318 return; 2319 2320 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART && 2321 !local->in_reconfig)) 2322 return; 2323 2324 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) 2325 return; 2326 2327 sdata->flags |= flag; 2328 2329 list_for_each_entry(key, &sdata->key_list, list) 2330 key->flags |= KEY_FLAG_TAINTED; 2331 } 2332 2333 void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif) 2334 { 2335 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART); 2336 } 2337 EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect); 2338 2339 void ieee80211_resume_disconnect(struct ieee80211_vif *vif) 2340 { 2341 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME); 2342 } 2343 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); 2344 2345 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, 2346 struct ieee80211_link_data *link) 2347 { 2348 struct ieee80211_local *local = sdata->local; 2349 struct ieee80211_chanctx_conf *chanctx_conf; 2350 struct ieee80211_chanctx *chanctx; 2351 2352 lockdep_assert_wiphy(local->hw.wiphy); 2353 2354 chanctx_conf = rcu_dereference_protected(link->conf->chanctx_conf, 2355 lockdep_is_held(&local->hw.wiphy->mtx)); 2356 2357 /* 2358 * This function can be called from a work, thus it may be possible 2359 * that the chanctx_conf is removed (due to a disconnection, for 2360 * example). 2361 * So nothing should be done in such case. 2362 */ 2363 if (!chanctx_conf) 2364 return; 2365 2366 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 2367 ieee80211_recalc_smps_chanctx(local, chanctx); 2368 } 2369 2370 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, 2371 int link_id) 2372 { 2373 struct ieee80211_local *local = sdata->local; 2374 struct ieee80211_chanctx_conf *chanctx_conf; 2375 struct ieee80211_chanctx *chanctx; 2376 int i; 2377 2378 lockdep_assert_wiphy(local->hw.wiphy); 2379 2380 for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) { 2381 struct ieee80211_bss_conf *bss_conf; 2382 2383 if (link_id >= 0 && link_id != i) 2384 continue; 2385 2386 rcu_read_lock(); 2387 bss_conf = rcu_dereference(sdata->vif.link_conf[i]); 2388 if (!bss_conf) { 2389 rcu_read_unlock(); 2390 continue; 2391 } 2392 2393 chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf, 2394 lockdep_is_held(&local->hw.wiphy->mtx)); 2395 /* 2396 * Since we hold the wiphy mutex (checked above) 2397 * we can take the chanctx_conf pointer out of the 2398 * RCU critical section, it cannot go away without 2399 * the mutex. Just the way we reached it could - in 2400 * theory - go away, but we don't really care and 2401 * it really shouldn't happen anyway. 2402 */ 2403 rcu_read_unlock(); 2404 2405 if (!chanctx_conf) 2406 return; 2407 2408 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, 2409 conf); 2410 ieee80211_recalc_chanctx_min_def(local, chanctx); 2411 } 2412 } 2413 2414 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) 2415 { 2416 size_t pos = offset; 2417 2418 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) 2419 pos += 2 + ies[pos + 1]; 2420 2421 return pos; 2422 } 2423 2424 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2425 u16 cap) 2426 { 2427 __le16 tmp; 2428 2429 *pos++ = WLAN_EID_HT_CAPABILITY; 2430 *pos++ = sizeof(struct ieee80211_ht_cap); 2431 memset(pos, 0, sizeof(struct ieee80211_ht_cap)); 2432 2433 /* capability flags */ 2434 tmp = cpu_to_le16(cap); 2435 memcpy(pos, &tmp, sizeof(u16)); 2436 pos += sizeof(u16); 2437 2438 /* AMPDU parameters */ 2439 *pos++ = ht_cap->ampdu_factor | 2440 (ht_cap->ampdu_density << 2441 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); 2442 2443 /* MCS set */ 2444 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); 2445 pos += sizeof(ht_cap->mcs); 2446 2447 /* extended capabilities */ 2448 pos += sizeof(__le16); 2449 2450 /* BF capabilities */ 2451 pos += sizeof(__le32); 2452 2453 /* antenna selection */ 2454 pos += sizeof(u8); 2455 2456 return pos; 2457 } 2458 2459 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2460 u32 cap) 2461 { 2462 __le32 tmp; 2463 2464 *pos++ = WLAN_EID_VHT_CAPABILITY; 2465 *pos++ = sizeof(struct ieee80211_vht_cap); 2466 memset(pos, 0, sizeof(struct ieee80211_vht_cap)); 2467 2468 /* capability flags */ 2469 tmp = cpu_to_le32(cap); 2470 memcpy(pos, &tmp, sizeof(u32)); 2471 pos += sizeof(u32); 2472 2473 /* VHT MCS set */ 2474 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); 2475 pos += sizeof(vht_cap->vht_mcs); 2476 2477 return pos; 2478 } 2479 2480 /* this may return more than ieee80211_put_he_6ghz_cap() will need */ 2481 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata) 2482 { 2483 const struct ieee80211_sta_he_cap *he_cap; 2484 struct ieee80211_supported_band *sband; 2485 u8 n; 2486 2487 sband = ieee80211_get_sband(sdata); 2488 if (!sband) 2489 return 0; 2490 2491 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 2492 if (!he_cap) 2493 return 0; 2494 2495 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem); 2496 return 2 + 1 + 2497 sizeof(he_cap->he_cap_elem) + n + 2498 ieee80211_he_ppe_size(he_cap->ppe_thres[0], 2499 he_cap->he_cap_elem.phy_cap_info); 2500 } 2501 2502 static void 2503 ieee80211_get_adjusted_he_cap(const struct ieee80211_conn_settings *conn, 2504 const struct ieee80211_sta_he_cap *he_cap, 2505 struct ieee80211_he_cap_elem *elem) 2506 { 2507 u8 ru_limit, max_ru; 2508 2509 *elem = he_cap->he_cap_elem; 2510 2511 switch (conn->bw_limit) { 2512 case IEEE80211_CONN_BW_LIMIT_20: 2513 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242; 2514 break; 2515 case IEEE80211_CONN_BW_LIMIT_40: 2516 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484; 2517 break; 2518 case IEEE80211_CONN_BW_LIMIT_80: 2519 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996; 2520 break; 2521 default: 2522 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996; 2523 break; 2524 } 2525 2526 max_ru = elem->phy_cap_info[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK; 2527 max_ru = min(max_ru, ru_limit); 2528 elem->phy_cap_info[8] &= ~IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK; 2529 elem->phy_cap_info[8] |= max_ru; 2530 2531 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_40) { 2532 elem->phy_cap_info[0] &= 2533 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G | 2534 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G); 2535 elem->phy_cap_info[9] &= 2536 ~IEEE80211_HE_PHY_CAP9_LONGER_THAN_16_SIGB_OFDM_SYM; 2537 } 2538 2539 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) { 2540 elem->phy_cap_info[0] &= 2541 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G | 2542 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G); 2543 elem->phy_cap_info[5] &= 2544 ~IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ_MASK; 2545 elem->phy_cap_info[7] &= 2546 ~(IEEE80211_HE_PHY_CAP7_STBC_TX_ABOVE_80MHZ | 2547 IEEE80211_HE_PHY_CAP7_STBC_RX_ABOVE_80MHZ); 2548 } 2549 } 2550 2551 int ieee80211_put_he_cap(struct sk_buff *skb, 2552 struct ieee80211_sub_if_data *sdata, 2553 const struct ieee80211_supported_band *sband, 2554 const struct ieee80211_conn_settings *conn) 2555 { 2556 const struct ieee80211_sta_he_cap *he_cap; 2557 struct ieee80211_he_cap_elem elem; 2558 u8 *len; 2559 u8 n; 2560 u8 ie_len; 2561 2562 if (!conn) 2563 conn = &ieee80211_conn_settings_unlimited; 2564 2565 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 2566 if (!he_cap) 2567 return 0; 2568 2569 /* modify on stack first to calculate 'n' and 'ie_len' correctly */ 2570 ieee80211_get_adjusted_he_cap(conn, he_cap, &elem); 2571 2572 n = ieee80211_he_mcs_nss_size(&elem); 2573 ie_len = 2 + 1 + 2574 sizeof(he_cap->he_cap_elem) + n + 2575 ieee80211_he_ppe_size(he_cap->ppe_thres[0], 2576 he_cap->he_cap_elem.phy_cap_info); 2577 2578 if (skb_tailroom(skb) < ie_len) 2579 return -ENOBUFS; 2580 2581 skb_put_u8(skb, WLAN_EID_EXTENSION); 2582 len = skb_put(skb, 1); /* We'll set the size later below */ 2583 skb_put_u8(skb, WLAN_EID_EXT_HE_CAPABILITY); 2584 2585 /* Fixed data */ 2586 skb_put_data(skb, &elem, sizeof(elem)); 2587 2588 skb_put_data(skb, &he_cap->he_mcs_nss_supp, n); 2589 2590 /* Check if PPE Threshold should be present */ 2591 if ((he_cap->he_cap_elem.phy_cap_info[6] & 2592 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0) 2593 goto end; 2594 2595 /* 2596 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm: 2597 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK) 2598 */ 2599 n = hweight8(he_cap->ppe_thres[0] & 2600 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK); 2601 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >> 2602 IEEE80211_PPE_THRES_NSS_POS)); 2603 2604 /* 2605 * Each pair is 6 bits, and we need to add the 7 "header" bits to the 2606 * total size. 2607 */ 2608 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7; 2609 n = DIV_ROUND_UP(n, 8); 2610 2611 /* Copy PPE Thresholds */ 2612 skb_put_data(skb, &he_cap->ppe_thres, n); 2613 2614 end: 2615 *len = skb_tail_pointer(skb) - len - 1; 2616 return 0; 2617 } 2618 2619 int ieee80211_put_reg_conn(struct sk_buff *skb, 2620 enum ieee80211_channel_flags flags) 2621 { 2622 u8 reg_conn = IEEE80211_REG_CONN_LPI_VALID | 2623 IEEE80211_REG_CONN_LPI_VALUE | 2624 IEEE80211_REG_CONN_SP_VALID; 2625 2626 if (!(flags & IEEE80211_CHAN_NO_6GHZ_AFC_CLIENT)) 2627 reg_conn |= IEEE80211_REG_CONN_SP_VALUE; 2628 2629 skb_put_u8(skb, WLAN_EID_EXTENSION); 2630 skb_put_u8(skb, 1 + sizeof(reg_conn)); 2631 skb_put_u8(skb, WLAN_EID_EXT_NON_AP_STA_REG_CON); 2632 skb_put_u8(skb, reg_conn); 2633 return 0; 2634 } 2635 2636 int ieee80211_put_he_6ghz_cap(struct sk_buff *skb, 2637 struct ieee80211_sub_if_data *sdata, 2638 enum ieee80211_smps_mode smps_mode) 2639 { 2640 struct ieee80211_supported_band *sband; 2641 const struct ieee80211_sband_iftype_data *iftd; 2642 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif); 2643 __le16 cap; 2644 2645 if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy, 2646 BIT(NL80211_BAND_6GHZ), 2647 IEEE80211_CHAN_NO_HE)) 2648 return 0; 2649 2650 sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ]; 2651 2652 iftd = ieee80211_get_sband_iftype_data(sband, iftype); 2653 if (!iftd) 2654 return 0; 2655 2656 /* Check for device HE 6 GHz capability before adding element */ 2657 if (!iftd->he_6ghz_capa.capa) 2658 return 0; 2659 2660 cap = iftd->he_6ghz_capa.capa; 2661 cap &= cpu_to_le16(~IEEE80211_HE_6GHZ_CAP_SM_PS); 2662 2663 switch (smps_mode) { 2664 case IEEE80211_SMPS_AUTOMATIC: 2665 case IEEE80211_SMPS_NUM_MODES: 2666 WARN_ON(1); 2667 fallthrough; 2668 case IEEE80211_SMPS_OFF: 2669 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED, 2670 IEEE80211_HE_6GHZ_CAP_SM_PS); 2671 break; 2672 case IEEE80211_SMPS_STATIC: 2673 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC, 2674 IEEE80211_HE_6GHZ_CAP_SM_PS); 2675 break; 2676 case IEEE80211_SMPS_DYNAMIC: 2677 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC, 2678 IEEE80211_HE_6GHZ_CAP_SM_PS); 2679 break; 2680 } 2681 2682 if (skb_tailroom(skb) < 2 + 1 + sizeof(cap)) 2683 return -ENOBUFS; 2684 2685 skb_put_u8(skb, WLAN_EID_EXTENSION); 2686 skb_put_u8(skb, 1 + sizeof(cap)); 2687 skb_put_u8(skb, WLAN_EID_EXT_HE_6GHZ_CAPA); 2688 skb_put_data(skb, &cap, sizeof(cap)); 2689 return 0; 2690 } 2691 2692 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2693 const struct cfg80211_chan_def *chandef, 2694 u16 prot_mode, bool rifs_mode) 2695 { 2696 struct ieee80211_ht_operation *ht_oper; 2697 /* Build HT Information */ 2698 *pos++ = WLAN_EID_HT_OPERATION; 2699 *pos++ = sizeof(struct ieee80211_ht_operation); 2700 ht_oper = (struct ieee80211_ht_operation *)pos; 2701 ht_oper->primary_chan = ieee80211_frequency_to_channel( 2702 chandef->chan->center_freq); 2703 switch (chandef->width) { 2704 case NL80211_CHAN_WIDTH_160: 2705 case NL80211_CHAN_WIDTH_80P80: 2706 case NL80211_CHAN_WIDTH_80: 2707 case NL80211_CHAN_WIDTH_40: 2708 if (chandef->center_freq1 > chandef->chan->center_freq) 2709 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 2710 else 2711 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 2712 break; 2713 case NL80211_CHAN_WIDTH_320: 2714 /* HT information element should not be included on 6GHz */ 2715 WARN_ON(1); 2716 return pos; 2717 default: 2718 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; 2719 break; 2720 } 2721 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 2722 chandef->width != NL80211_CHAN_WIDTH_20_NOHT && 2723 chandef->width != NL80211_CHAN_WIDTH_20) 2724 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; 2725 2726 if (rifs_mode) 2727 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE; 2728 2729 ht_oper->operation_mode = cpu_to_le16(prot_mode); 2730 ht_oper->stbc_param = 0x0000; 2731 2732 /* It seems that Basic MCS set and Supported MCS set 2733 are identical for the first 10 bytes */ 2734 memset(&ht_oper->basic_set, 0, 16); 2735 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); 2736 2737 return pos + sizeof(struct ieee80211_ht_operation); 2738 } 2739 2740 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2741 const struct cfg80211_chan_def *chandef) 2742 { 2743 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */ 2744 *pos++ = 3; /* IE length */ 2745 /* New channel width */ 2746 switch (chandef->width) { 2747 case NL80211_CHAN_WIDTH_80: 2748 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ; 2749 break; 2750 case NL80211_CHAN_WIDTH_160: 2751 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ; 2752 break; 2753 case NL80211_CHAN_WIDTH_80P80: 2754 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ; 2755 break; 2756 case NL80211_CHAN_WIDTH_320: 2757 /* The behavior is not defined for 320 MHz channels */ 2758 WARN_ON(1); 2759 fallthrough; 2760 default: 2761 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT; 2762 } 2763 2764 /* new center frequency segment 0 */ 2765 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1); 2766 /* new center frequency segment 1 */ 2767 if (chandef->center_freq2) 2768 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2); 2769 else 2770 *pos++ = 0; 2771 } 2772 2773 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2774 const struct cfg80211_chan_def *chandef) 2775 { 2776 struct ieee80211_vht_operation *vht_oper; 2777 2778 *pos++ = WLAN_EID_VHT_OPERATION; 2779 *pos++ = sizeof(struct ieee80211_vht_operation); 2780 vht_oper = (struct ieee80211_vht_operation *)pos; 2781 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel( 2782 chandef->center_freq1); 2783 if (chandef->center_freq2) 2784 vht_oper->center_freq_seg1_idx = 2785 ieee80211_frequency_to_channel(chandef->center_freq2); 2786 else 2787 vht_oper->center_freq_seg1_idx = 0x00; 2788 2789 switch (chandef->width) { 2790 case NL80211_CHAN_WIDTH_160: 2791 /* 2792 * Convert 160 MHz channel width to new style as interop 2793 * workaround. 2794 */ 2795 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2796 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx; 2797 if (chandef->chan->center_freq < chandef->center_freq1) 2798 vht_oper->center_freq_seg0_idx -= 8; 2799 else 2800 vht_oper->center_freq_seg0_idx += 8; 2801 break; 2802 case NL80211_CHAN_WIDTH_80P80: 2803 /* 2804 * Convert 80+80 MHz channel width to new style as interop 2805 * workaround. 2806 */ 2807 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2808 break; 2809 case NL80211_CHAN_WIDTH_80: 2810 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2811 break; 2812 case NL80211_CHAN_WIDTH_320: 2813 /* VHT information element should not be included on 6GHz */ 2814 WARN_ON(1); 2815 return pos; 2816 default: 2817 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; 2818 break; 2819 } 2820 2821 /* don't require special VHT peer rates */ 2822 vht_oper->basic_mcs_set = cpu_to_le16(0xffff); 2823 2824 return pos + sizeof(struct ieee80211_vht_operation); 2825 } 2826 2827 u8 *ieee80211_ie_build_he_oper(u8 *pos, const struct cfg80211_chan_def *chandef) 2828 { 2829 struct ieee80211_he_operation *he_oper; 2830 struct ieee80211_he_6ghz_oper *he_6ghz_op; 2831 struct cfg80211_chan_def he_chandef; 2832 u32 he_oper_params; 2833 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation); 2834 2835 if (chandef->chan->band == NL80211_BAND_6GHZ) 2836 ie_len += sizeof(struct ieee80211_he_6ghz_oper); 2837 2838 *pos++ = WLAN_EID_EXTENSION; 2839 *pos++ = ie_len; 2840 *pos++ = WLAN_EID_EXT_HE_OPERATION; 2841 2842 he_oper_params = 0; 2843 he_oper_params |= u32_encode_bits(1023, /* disabled */ 2844 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK); 2845 he_oper_params |= u32_encode_bits(1, 2846 IEEE80211_HE_OPERATION_ER_SU_DISABLE); 2847 he_oper_params |= u32_encode_bits(1, 2848 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED); 2849 if (chandef->chan->band == NL80211_BAND_6GHZ) 2850 he_oper_params |= u32_encode_bits(1, 2851 IEEE80211_HE_OPERATION_6GHZ_OP_INFO); 2852 2853 he_oper = (struct ieee80211_he_operation *)pos; 2854 he_oper->he_oper_params = cpu_to_le32(he_oper_params); 2855 2856 /* don't require special HE peer rates */ 2857 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff); 2858 pos += sizeof(struct ieee80211_he_operation); 2859 2860 if (chandef->chan->band != NL80211_BAND_6GHZ) 2861 goto out; 2862 2863 cfg80211_chandef_create(&he_chandef, chandef->chan, NL80211_CHAN_NO_HT); 2864 he_chandef.center_freq1 = chandef->center_freq1; 2865 he_chandef.center_freq2 = chandef->center_freq2; 2866 he_chandef.width = chandef->width; 2867 2868 /* TODO add VHT operational */ 2869 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos; 2870 he_6ghz_op->minrate = 6; /* 6 Mbps */ 2871 he_6ghz_op->primary = 2872 ieee80211_frequency_to_channel(he_chandef.chan->center_freq); 2873 he_6ghz_op->ccfs0 = 2874 ieee80211_frequency_to_channel(he_chandef.center_freq1); 2875 if (he_chandef.center_freq2) 2876 he_6ghz_op->ccfs1 = 2877 ieee80211_frequency_to_channel(he_chandef.center_freq2); 2878 else 2879 he_6ghz_op->ccfs1 = 0; 2880 2881 switch (he_chandef.width) { 2882 case NL80211_CHAN_WIDTH_320: 2883 /* Downgrade EHT 320 MHz BW to 160 MHz for HE and set new 2884 * center_freq1 2885 */ 2886 ieee80211_chandef_downgrade(&he_chandef, NULL); 2887 he_6ghz_op->ccfs0 = 2888 ieee80211_frequency_to_channel(he_chandef.center_freq1); 2889 fallthrough; 2890 case NL80211_CHAN_WIDTH_160: 2891 /* Convert 160 MHz channel width to new style as interop 2892 * workaround. 2893 */ 2894 he_6ghz_op->control = 2895 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; 2896 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0; 2897 if (he_chandef.chan->center_freq < he_chandef.center_freq1) 2898 he_6ghz_op->ccfs0 -= 8; 2899 else 2900 he_6ghz_op->ccfs0 += 8; 2901 fallthrough; 2902 case NL80211_CHAN_WIDTH_80P80: 2903 he_6ghz_op->control = 2904 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; 2905 break; 2906 case NL80211_CHAN_WIDTH_80: 2907 he_6ghz_op->control = 2908 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ; 2909 break; 2910 case NL80211_CHAN_WIDTH_40: 2911 he_6ghz_op->control = 2912 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ; 2913 break; 2914 default: 2915 he_6ghz_op->control = 2916 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ; 2917 break; 2918 } 2919 2920 pos += sizeof(struct ieee80211_he_6ghz_oper); 2921 2922 out: 2923 return pos; 2924 } 2925 2926 u8 *ieee80211_ie_build_eht_oper(u8 *pos, const struct cfg80211_chan_def *chandef, 2927 const struct ieee80211_sta_eht_cap *eht_cap) 2928 2929 { 2930 const struct ieee80211_eht_mcs_nss_supp_20mhz_only *eht_mcs_nss = 2931 &eht_cap->eht_mcs_nss_supp.only_20mhz; 2932 struct ieee80211_eht_operation *eht_oper; 2933 struct ieee80211_eht_operation_info *eht_oper_info; 2934 u8 eht_oper_len = offsetof(struct ieee80211_eht_operation, optional); 2935 u8 eht_oper_info_len = 2936 offsetof(struct ieee80211_eht_operation_info, optional); 2937 u8 chan_width = 0; 2938 2939 *pos++ = WLAN_EID_EXTENSION; 2940 *pos++ = 1 + eht_oper_len + eht_oper_info_len; 2941 *pos++ = WLAN_EID_EXT_EHT_OPERATION; 2942 2943 eht_oper = (struct ieee80211_eht_operation *)pos; 2944 2945 memcpy(&eht_oper->basic_mcs_nss, eht_mcs_nss, sizeof(*eht_mcs_nss)); 2946 eht_oper->params |= IEEE80211_EHT_OPER_INFO_PRESENT; 2947 pos += eht_oper_len; 2948 2949 eht_oper_info = 2950 (struct ieee80211_eht_operation_info *)eht_oper->optional; 2951 2952 eht_oper_info->ccfs0 = 2953 ieee80211_frequency_to_channel(chandef->center_freq1); 2954 if (chandef->center_freq2) 2955 eht_oper_info->ccfs1 = 2956 ieee80211_frequency_to_channel(chandef->center_freq2); 2957 else 2958 eht_oper_info->ccfs1 = 0; 2959 2960 switch (chandef->width) { 2961 case NL80211_CHAN_WIDTH_320: 2962 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ; 2963 eht_oper_info->ccfs1 = eht_oper_info->ccfs0; 2964 if (chandef->chan->center_freq < chandef->center_freq1) 2965 eht_oper_info->ccfs0 -= 16; 2966 else 2967 eht_oper_info->ccfs0 += 16; 2968 break; 2969 case NL80211_CHAN_WIDTH_160: 2970 eht_oper_info->ccfs1 = eht_oper_info->ccfs0; 2971 if (chandef->chan->center_freq < chandef->center_freq1) 2972 eht_oper_info->ccfs0 -= 8; 2973 else 2974 eht_oper_info->ccfs0 += 8; 2975 fallthrough; 2976 case NL80211_CHAN_WIDTH_80P80: 2977 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ; 2978 break; 2979 case NL80211_CHAN_WIDTH_80: 2980 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ; 2981 break; 2982 case NL80211_CHAN_WIDTH_40: 2983 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ; 2984 break; 2985 default: 2986 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ; 2987 break; 2988 } 2989 eht_oper_info->control = chan_width; 2990 pos += eht_oper_info_len; 2991 2992 /* TODO: eht_oper_info->optional */ 2993 2994 return pos; 2995 } 2996 2997 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2998 struct cfg80211_chan_def *chandef) 2999 { 3000 enum nl80211_channel_type channel_type; 3001 3002 if (!ht_oper) 3003 return false; 3004 3005 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { 3006 case IEEE80211_HT_PARAM_CHA_SEC_NONE: 3007 channel_type = NL80211_CHAN_HT20; 3008 break; 3009 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: 3010 channel_type = NL80211_CHAN_HT40PLUS; 3011 break; 3012 case IEEE80211_HT_PARAM_CHA_SEC_BELOW: 3013 channel_type = NL80211_CHAN_HT40MINUS; 3014 break; 3015 default: 3016 return false; 3017 } 3018 3019 cfg80211_chandef_create(chandef, chandef->chan, channel_type); 3020 return true; 3021 } 3022 3023 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 3024 const struct ieee80211_vht_operation *oper, 3025 const struct ieee80211_ht_operation *htop, 3026 struct cfg80211_chan_def *chandef) 3027 { 3028 struct cfg80211_chan_def new = *chandef; 3029 int cf0, cf1; 3030 int ccfs0, ccfs1, ccfs2; 3031 int ccf0, ccf1; 3032 u32 vht_cap; 3033 bool support_80_80 = false; 3034 bool support_160 = false; 3035 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info, 3036 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK); 3037 u8 supp_chwidth = u32_get_bits(vht_cap_info, 3038 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK); 3039 3040 if (!oper || !htop) 3041 return false; 3042 3043 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap; 3044 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK | 3045 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)); 3046 support_80_80 = ((vht_cap & 3047 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) || 3048 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ && 3049 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) || 3050 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >> 3051 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1)); 3052 ccfs0 = oper->center_freq_seg0_idx; 3053 ccfs1 = oper->center_freq_seg1_idx; 3054 ccfs2 = (le16_to_cpu(htop->operation_mode) & 3055 IEEE80211_HT_OP_MODE_CCFS2_MASK) 3056 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT; 3057 3058 ccf0 = ccfs0; 3059 3060 /* if not supported, parse as though we didn't understand it */ 3061 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW)) 3062 ext_nss_bw_supp = 0; 3063 3064 /* 3065 * Cf. IEEE 802.11 Table 9-250 3066 * 3067 * We really just consider that because it's inefficient to connect 3068 * at a higher bandwidth than we'll actually be able to use. 3069 */ 3070 switch ((supp_chwidth << 4) | ext_nss_bw_supp) { 3071 default: 3072 case 0x00: 3073 ccf1 = 0; 3074 support_160 = false; 3075 support_80_80 = false; 3076 break; 3077 case 0x01: 3078 support_80_80 = false; 3079 fallthrough; 3080 case 0x02: 3081 case 0x03: 3082 ccf1 = ccfs2; 3083 break; 3084 case 0x10: 3085 ccf1 = ccfs1; 3086 break; 3087 case 0x11: 3088 case 0x12: 3089 if (!ccfs1) 3090 ccf1 = ccfs2; 3091 else 3092 ccf1 = ccfs1; 3093 break; 3094 case 0x13: 3095 case 0x20: 3096 case 0x23: 3097 ccf1 = ccfs1; 3098 break; 3099 } 3100 3101 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band); 3102 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band); 3103 3104 switch (oper->chan_width) { 3105 case IEEE80211_VHT_CHANWIDTH_USE_HT: 3106 /* just use HT information directly */ 3107 break; 3108 case IEEE80211_VHT_CHANWIDTH_80MHZ: 3109 new.width = NL80211_CHAN_WIDTH_80; 3110 new.center_freq1 = cf0; 3111 /* If needed, adjust based on the newer interop workaround. */ 3112 if (ccf1) { 3113 unsigned int diff; 3114 3115 diff = abs(ccf1 - ccf0); 3116 if ((diff == 8) && support_160) { 3117 new.width = NL80211_CHAN_WIDTH_160; 3118 new.center_freq1 = cf1; 3119 } else if ((diff > 8) && support_80_80) { 3120 new.width = NL80211_CHAN_WIDTH_80P80; 3121 new.center_freq2 = cf1; 3122 } 3123 } 3124 break; 3125 case IEEE80211_VHT_CHANWIDTH_160MHZ: 3126 /* deprecated encoding */ 3127 new.width = NL80211_CHAN_WIDTH_160; 3128 new.center_freq1 = cf0; 3129 break; 3130 case IEEE80211_VHT_CHANWIDTH_80P80MHZ: 3131 /* deprecated encoding */ 3132 new.width = NL80211_CHAN_WIDTH_80P80; 3133 new.center_freq1 = cf0; 3134 new.center_freq2 = cf1; 3135 break; 3136 default: 3137 return false; 3138 } 3139 3140 if (!cfg80211_chandef_valid(&new)) 3141 return false; 3142 3143 *chandef = new; 3144 return true; 3145 } 3146 3147 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation_info *info, 3148 struct cfg80211_chan_def *chandef) 3149 { 3150 chandef->center_freq1 = 3151 ieee80211_channel_to_frequency(info->ccfs0, 3152 chandef->chan->band); 3153 3154 switch (u8_get_bits(info->control, 3155 IEEE80211_EHT_OPER_CHAN_WIDTH)) { 3156 case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ: 3157 chandef->width = NL80211_CHAN_WIDTH_20; 3158 break; 3159 case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ: 3160 chandef->width = NL80211_CHAN_WIDTH_40; 3161 break; 3162 case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ: 3163 chandef->width = NL80211_CHAN_WIDTH_80; 3164 break; 3165 case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ: 3166 chandef->width = NL80211_CHAN_WIDTH_160; 3167 chandef->center_freq1 = 3168 ieee80211_channel_to_frequency(info->ccfs1, 3169 chandef->chan->band); 3170 break; 3171 case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ: 3172 chandef->width = NL80211_CHAN_WIDTH_320; 3173 chandef->center_freq1 = 3174 ieee80211_channel_to_frequency(info->ccfs1, 3175 chandef->chan->band); 3176 break; 3177 } 3178 } 3179 3180 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_local *local, 3181 const struct ieee80211_he_operation *he_oper, 3182 const struct ieee80211_eht_operation *eht_oper, 3183 struct cfg80211_chan_def *chandef) 3184 { 3185 struct cfg80211_chan_def he_chandef = *chandef; 3186 const struct ieee80211_he_6ghz_oper *he_6ghz_oper; 3187 u32 freq; 3188 3189 if (chandef->chan->band != NL80211_BAND_6GHZ) 3190 return true; 3191 3192 if (!he_oper) 3193 return false; 3194 3195 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper); 3196 if (!he_6ghz_oper) 3197 return false; 3198 3199 /* 3200 * The EHT operation IE does not contain the primary channel so the 3201 * primary channel frequency should be taken from the 6 GHz operation 3202 * information. 3203 */ 3204 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary, 3205 NL80211_BAND_6GHZ); 3206 he_chandef.chan = ieee80211_get_channel(local->hw.wiphy, freq); 3207 3208 if (!he_chandef.chan) 3209 return false; 3210 3211 if (!eht_oper || 3212 !(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) { 3213 switch (u8_get_bits(he_6ghz_oper->control, 3214 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) { 3215 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ: 3216 he_chandef.width = NL80211_CHAN_WIDTH_20; 3217 break; 3218 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ: 3219 he_chandef.width = NL80211_CHAN_WIDTH_40; 3220 break; 3221 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ: 3222 he_chandef.width = NL80211_CHAN_WIDTH_80; 3223 break; 3224 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ: 3225 he_chandef.width = NL80211_CHAN_WIDTH_80; 3226 if (!he_6ghz_oper->ccfs1) 3227 break; 3228 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) 3229 he_chandef.width = NL80211_CHAN_WIDTH_160; 3230 else 3231 he_chandef.width = NL80211_CHAN_WIDTH_80P80; 3232 break; 3233 } 3234 3235 if (he_chandef.width == NL80211_CHAN_WIDTH_160) { 3236 he_chandef.center_freq1 = 3237 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, 3238 NL80211_BAND_6GHZ); 3239 } else { 3240 he_chandef.center_freq1 = 3241 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0, 3242 NL80211_BAND_6GHZ); 3243 he_chandef.center_freq2 = 3244 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, 3245 NL80211_BAND_6GHZ); 3246 } 3247 } else { 3248 ieee80211_chandef_eht_oper((const void *)eht_oper->optional, 3249 &he_chandef); 3250 he_chandef.punctured = 3251 ieee80211_eht_oper_dis_subchan_bitmap(eht_oper); 3252 } 3253 3254 if (!cfg80211_chandef_valid(&he_chandef)) 3255 return false; 3256 3257 *chandef = he_chandef; 3258 3259 return true; 3260 } 3261 3262 bool ieee80211_chandef_s1g_oper(struct ieee80211_local *local, 3263 const struct ieee80211_s1g_oper_ie *oper, 3264 struct cfg80211_chan_def *chandef) 3265 { 3266 u32 oper_khz, pri_1mhz_khz, pri_2mhz_khz; 3267 3268 if (!oper) 3269 return false; 3270 3271 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) { 3272 case IEEE80211_S1G_CHANWIDTH_1MHZ: 3273 chandef->width = NL80211_CHAN_WIDTH_1; 3274 break; 3275 case IEEE80211_S1G_CHANWIDTH_2MHZ: 3276 chandef->width = NL80211_CHAN_WIDTH_2; 3277 break; 3278 case IEEE80211_S1G_CHANWIDTH_4MHZ: 3279 chandef->width = NL80211_CHAN_WIDTH_4; 3280 break; 3281 case IEEE80211_S1G_CHANWIDTH_8MHZ: 3282 chandef->width = NL80211_CHAN_WIDTH_8; 3283 break; 3284 case IEEE80211_S1G_CHANWIDTH_16MHZ: 3285 chandef->width = NL80211_CHAN_WIDTH_16; 3286 break; 3287 default: 3288 return false; 3289 } 3290 3291 chandef->s1g_primary_2mhz = false; 3292 3293 switch (u8_get_bits(oper->ch_width, S1G_OPER_CH_WIDTH_PRIMARY)) { 3294 case IEEE80211_S1G_PRI_CHANWIDTH_1MHZ: 3295 pri_1mhz_khz = ieee80211_channel_to_freq_khz( 3296 oper->primary_ch, NL80211_BAND_S1GHZ); 3297 break; 3298 case IEEE80211_S1G_PRI_CHANWIDTH_2MHZ: 3299 chandef->s1g_primary_2mhz = true; 3300 pri_2mhz_khz = ieee80211_channel_to_freq_khz( 3301 oper->primary_ch, NL80211_BAND_S1GHZ); 3302 3303 if (u8_get_bits(oper->ch_width, S1G_OPER_CH_PRIMARY_LOCATION) == 3304 S1G_2M_PRIMARY_LOCATION_LOWER) 3305 pri_1mhz_khz = pri_2mhz_khz - 500; 3306 else 3307 pri_1mhz_khz = pri_2mhz_khz + 500; 3308 break; 3309 default: 3310 return false; 3311 } 3312 3313 oper_khz = ieee80211_channel_to_freq_khz(oper->oper_ch, 3314 NL80211_BAND_S1GHZ); 3315 chandef->center_freq1 = KHZ_TO_MHZ(oper_khz); 3316 chandef->freq1_offset = oper_khz % 1000; 3317 chandef->chan = 3318 ieee80211_get_channel_khz(local->hw.wiphy, pri_1mhz_khz); 3319 3320 return chandef->chan; 3321 } 3322 3323 int ieee80211_put_srates_elem(struct sk_buff *skb, 3324 const struct ieee80211_supported_band *sband, 3325 u32 basic_rates, u32 masked_rates, 3326 u8 element_id) 3327 { 3328 u8 i, rates, skip; 3329 3330 rates = 0; 3331 for (i = 0; i < sband->n_bitrates; i++) { 3332 if (masked_rates & BIT(i)) 3333 continue; 3334 rates++; 3335 } 3336 3337 if (element_id == WLAN_EID_SUPP_RATES) { 3338 rates = min_t(u8, rates, 8); 3339 skip = 0; 3340 } else { 3341 skip = 8; 3342 if (rates <= skip) 3343 return 0; 3344 rates -= skip; 3345 } 3346 3347 if (skb_tailroom(skb) < rates + 2) 3348 return -ENOBUFS; 3349 3350 skb_put_u8(skb, element_id); 3351 skb_put_u8(skb, rates); 3352 3353 for (i = 0; i < sband->n_bitrates && rates; i++) { 3354 int rate; 3355 u8 basic; 3356 3357 if (masked_rates & BIT(i)) 3358 continue; 3359 3360 if (skip > 0) { 3361 skip--; 3362 continue; 3363 } 3364 3365 basic = basic_rates & BIT(i) ? 0x80 : 0; 3366 3367 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 5); 3368 skb_put_u8(skb, basic | (u8)rate); 3369 rates--; 3370 } 3371 3372 WARN(rates > 0, "rates confused: rates:%d, element:%d\n", 3373 rates, element_id); 3374 3375 return 0; 3376 } 3377 3378 int ieee80211_ave_rssi(struct ieee80211_vif *vif, int link_id) 3379 { 3380 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3381 struct ieee80211_link_data *link_data; 3382 3383 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 3384 return 0; 3385 3386 if (link_id < 0) 3387 link_data = &sdata->deflink; 3388 else 3389 link_data = wiphy_dereference(sdata->local->hw.wiphy, 3390 sdata->link[link_id]); 3391 3392 if (WARN_ON_ONCE(!link_data)) 3393 return -99; 3394 3395 return -ewma_beacon_signal_read(&link_data->u.mgd.ave_beacon_signal); 3396 } 3397 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); 3398 3399 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) 3400 { 3401 if (!mcs) 3402 return 1; 3403 3404 /* TODO: consider rx_highest */ 3405 3406 if (mcs->rx_mask[3]) 3407 return 4; 3408 if (mcs->rx_mask[2]) 3409 return 3; 3410 if (mcs->rx_mask[1]) 3411 return 2; 3412 return 1; 3413 } 3414 3415 /** 3416 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame 3417 * @local: mac80211 hw info struct 3418 * @status: RX status 3419 * @mpdu_len: total MPDU length (including FCS) 3420 * @mpdu_offset: offset into MPDU to calculate timestamp at 3421 * 3422 * This function calculates the RX timestamp at the given MPDU offset, taking 3423 * into account what the RX timestamp was. An offset of 0 will just normalize 3424 * the timestamp to TSF at beginning of MPDU reception. 3425 * 3426 * Returns: the calculated timestamp 3427 */ 3428 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 3429 struct ieee80211_rx_status *status, 3430 unsigned int mpdu_len, 3431 unsigned int mpdu_offset) 3432 { 3433 u64 ts = status->mactime; 3434 bool mactime_plcp_start; 3435 struct rate_info ri; 3436 u16 rate; 3437 u8 n_ltf; 3438 3439 if (WARN_ON(!ieee80211_have_rx_timestamp(status))) 3440 return 0; 3441 3442 mactime_plcp_start = (status->flag & RX_FLAG_MACTIME) == 3443 RX_FLAG_MACTIME_PLCP_START; 3444 3445 memset(&ri, 0, sizeof(ri)); 3446 3447 ri.bw = status->bw; 3448 3449 /* Fill cfg80211 rate info */ 3450 switch (status->encoding) { 3451 case RX_ENC_EHT: 3452 ri.flags |= RATE_INFO_FLAGS_EHT_MCS; 3453 ri.mcs = status->rate_idx; 3454 ri.nss = status->nss; 3455 ri.eht_ru_alloc = status->eht.ru; 3456 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3457 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3458 /* TODO/FIXME: is this right? handle other PPDUs */ 3459 if (mactime_plcp_start) { 3460 mpdu_offset += 2; 3461 ts += 36; 3462 } 3463 break; 3464 case RX_ENC_HE: 3465 ri.flags |= RATE_INFO_FLAGS_HE_MCS; 3466 ri.mcs = status->rate_idx; 3467 ri.nss = status->nss; 3468 ri.he_ru_alloc = status->he_ru; 3469 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3470 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3471 3472 /* 3473 * See P802.11ax_D6.0, section 27.3.4 for 3474 * VHT PPDU format. 3475 */ 3476 if (mactime_plcp_start) { 3477 mpdu_offset += 2; 3478 ts += 36; 3479 3480 /* 3481 * TODO: 3482 * For HE MU PPDU, add the HE-SIG-B. 3483 * For HE ER PPDU, add 8us for the HE-SIG-A. 3484 * For HE TB PPDU, add 4us for the HE-STF. 3485 * Add the HE-LTF durations - variable. 3486 */ 3487 } 3488 3489 break; 3490 case RX_ENC_HT: 3491 ri.mcs = status->rate_idx; 3492 ri.flags |= RATE_INFO_FLAGS_MCS; 3493 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3494 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3495 3496 /* 3497 * See P802.11REVmd_D3.0, section 19.3.2 for 3498 * HT PPDU format. 3499 */ 3500 if (mactime_plcp_start) { 3501 mpdu_offset += 2; 3502 if (status->enc_flags & RX_ENC_FLAG_HT_GF) 3503 ts += 24; 3504 else 3505 ts += 32; 3506 3507 /* 3508 * Add Data HT-LTFs per streams 3509 * TODO: add Extension HT-LTFs, 4us per LTF 3510 */ 3511 n_ltf = ((ri.mcs >> 3) & 3) + 1; 3512 n_ltf = n_ltf == 3 ? 4 : n_ltf; 3513 ts += n_ltf * 4; 3514 } 3515 3516 break; 3517 case RX_ENC_VHT: 3518 ri.flags |= RATE_INFO_FLAGS_VHT_MCS; 3519 ri.mcs = status->rate_idx; 3520 ri.nss = status->nss; 3521 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3522 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3523 3524 /* 3525 * See P802.11REVmd_D3.0, section 21.3.2 for 3526 * VHT PPDU format. 3527 */ 3528 if (mactime_plcp_start) { 3529 mpdu_offset += 2; 3530 ts += 36; 3531 3532 /* 3533 * Add VHT-LTFs per streams 3534 */ 3535 n_ltf = (ri.nss != 1) && (ri.nss % 2) ? 3536 ri.nss + 1 : ri.nss; 3537 ts += 4 * n_ltf; 3538 } 3539 3540 break; 3541 default: 3542 WARN_ON(1); 3543 fallthrough; 3544 case RX_ENC_LEGACY: { 3545 struct ieee80211_supported_band *sband; 3546 3547 sband = local->hw.wiphy->bands[status->band]; 3548 ri.legacy = sband->bitrates[status->rate_idx].bitrate; 3549 3550 if (mactime_plcp_start) { 3551 if (status->band == NL80211_BAND_5GHZ) { 3552 ts += 20; 3553 mpdu_offset += 2; 3554 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) { 3555 ts += 96; 3556 } else { 3557 ts += 192; 3558 } 3559 } 3560 break; 3561 } 3562 } 3563 3564 rate = cfg80211_calculate_bitrate(&ri); 3565 if (WARN_ONCE(!rate, 3566 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n", 3567 (unsigned long long)status->flag, status->rate_idx, 3568 status->nss)) 3569 return 0; 3570 3571 /* rewind from end of MPDU */ 3572 if ((status->flag & RX_FLAG_MACTIME) == RX_FLAG_MACTIME_END) 3573 ts -= mpdu_len * 8 * 10 / rate; 3574 3575 ts += mpdu_offset * 8 * 10 / rate; 3576 3577 return ts; 3578 } 3579 3580 /* Cancel CAC for the interfaces under the specified @local. If @ctx is 3581 * also provided, only the interfaces using that ctx will be canceled. 3582 */ 3583 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local, 3584 struct ieee80211_chanctx *ctx) 3585 { 3586 struct ieee80211_sub_if_data *sdata; 3587 struct cfg80211_chan_def chandef; 3588 struct ieee80211_link_data *link; 3589 struct ieee80211_chanctx_conf *chanctx_conf; 3590 unsigned int link_id; 3591 3592 lockdep_assert_wiphy(local->hw.wiphy); 3593 3594 list_for_each_entry(sdata, &local->interfaces, list) { 3595 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; 3596 link_id++) { 3597 link = sdata_dereference(sdata->link[link_id], 3598 sdata); 3599 if (!link) 3600 continue; 3601 3602 chanctx_conf = sdata_dereference(link->conf->chanctx_conf, 3603 sdata); 3604 if (ctx && &ctx->conf != chanctx_conf) 3605 continue; 3606 3607 wiphy_hrtimer_work_cancel(local->hw.wiphy, 3608 &link->dfs_cac_timer_work); 3609 3610 if (!sdata->wdev.links[link_id].cac_started) 3611 continue; 3612 3613 chandef = link->conf->chanreq.oper; 3614 ieee80211_link_release_channel(link); 3615 cfg80211_cac_event(sdata->dev, &chandef, 3616 NL80211_RADAR_CAC_ABORTED, 3617 GFP_KERNEL, link_id); 3618 } 3619 } 3620 } 3621 3622 void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy, 3623 struct wiphy_work *work) 3624 { 3625 struct ieee80211_local *local = 3626 container_of(work, struct ieee80211_local, radar_detected_work); 3627 struct cfg80211_chan_def chandef; 3628 struct ieee80211_chanctx *ctx; 3629 3630 lockdep_assert_wiphy(local->hw.wiphy); 3631 3632 list_for_each_entry(ctx, &local->chanctx_list, list) { 3633 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) 3634 continue; 3635 3636 if (!ctx->radar_detected) 3637 continue; 3638 3639 ctx->radar_detected = false; 3640 3641 chandef = ctx->conf.def; 3642 3643 ieee80211_dfs_cac_cancel(local, ctx); 3644 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); 3645 } 3646 } 3647 3648 static void 3649 ieee80211_radar_mark_chan_ctx_iterator(struct ieee80211_hw *hw, 3650 struct ieee80211_chanctx_conf *chanctx_conf, 3651 void *data) 3652 { 3653 struct ieee80211_chanctx *ctx = 3654 container_of(chanctx_conf, struct ieee80211_chanctx, 3655 conf); 3656 3657 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) 3658 return; 3659 3660 if (data && data != chanctx_conf) 3661 return; 3662 3663 ctx->radar_detected = true; 3664 } 3665 3666 void ieee80211_radar_detected(struct ieee80211_hw *hw, 3667 struct ieee80211_chanctx_conf *chanctx_conf) 3668 { 3669 struct ieee80211_local *local = hw_to_local(hw); 3670 3671 trace_api_radar_detected(local); 3672 3673 ieee80211_iter_chan_contexts_atomic(hw, ieee80211_radar_mark_chan_ctx_iterator, 3674 chanctx_conf); 3675 3676 wiphy_work_queue(hw->wiphy, &local->radar_detected_work); 3677 } 3678 EXPORT_SYMBOL(ieee80211_radar_detected); 3679 3680 void ieee80211_chandef_downgrade(struct cfg80211_chan_def *c, 3681 struct ieee80211_conn_settings *conn) 3682 { 3683 enum nl80211_chan_width new_primary_width; 3684 struct ieee80211_conn_settings _ignored = {}; 3685 3686 /* allow passing NULL if caller doesn't care */ 3687 if (!conn) 3688 conn = &_ignored; 3689 3690 again: 3691 /* no-HT indicates nothing to do */ 3692 new_primary_width = NL80211_CHAN_WIDTH_20_NOHT; 3693 3694 switch (c->width) { 3695 default: 3696 case NL80211_CHAN_WIDTH_20_NOHT: 3697 WARN_ON_ONCE(1); 3698 fallthrough; 3699 case NL80211_CHAN_WIDTH_20: 3700 c->width = NL80211_CHAN_WIDTH_20_NOHT; 3701 conn->mode = IEEE80211_CONN_MODE_LEGACY; 3702 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3703 c->punctured = 0; 3704 break; 3705 case NL80211_CHAN_WIDTH_40: 3706 c->width = NL80211_CHAN_WIDTH_20; 3707 c->center_freq1 = c->chan->center_freq; 3708 if (conn->mode == IEEE80211_CONN_MODE_VHT) 3709 conn->mode = IEEE80211_CONN_MODE_HT; 3710 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3711 c->punctured = 0; 3712 break; 3713 case NL80211_CHAN_WIDTH_80: 3714 new_primary_width = NL80211_CHAN_WIDTH_40; 3715 if (conn->mode == IEEE80211_CONN_MODE_VHT) 3716 conn->mode = IEEE80211_CONN_MODE_HT; 3717 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_40; 3718 break; 3719 case NL80211_CHAN_WIDTH_80P80: 3720 c->center_freq2 = 0; 3721 c->width = NL80211_CHAN_WIDTH_80; 3722 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80; 3723 break; 3724 case NL80211_CHAN_WIDTH_160: 3725 new_primary_width = NL80211_CHAN_WIDTH_80; 3726 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80; 3727 break; 3728 case NL80211_CHAN_WIDTH_320: 3729 new_primary_width = NL80211_CHAN_WIDTH_160; 3730 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_160; 3731 break; 3732 case NL80211_CHAN_WIDTH_1: 3733 case NL80211_CHAN_WIDTH_2: 3734 case NL80211_CHAN_WIDTH_4: 3735 case NL80211_CHAN_WIDTH_8: 3736 case NL80211_CHAN_WIDTH_16: 3737 WARN_ON_ONCE(1); 3738 /* keep c->width */ 3739 conn->mode = IEEE80211_CONN_MODE_S1G; 3740 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3741 break; 3742 case NL80211_CHAN_WIDTH_5: 3743 case NL80211_CHAN_WIDTH_10: 3744 WARN_ON_ONCE(1); 3745 /* keep c->width */ 3746 conn->mode = IEEE80211_CONN_MODE_LEGACY; 3747 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3748 break; 3749 } 3750 3751 if (new_primary_width != NL80211_CHAN_WIDTH_20_NOHT) { 3752 c->center_freq1 = cfg80211_chandef_primary(c, new_primary_width, 3753 &c->punctured); 3754 c->width = new_primary_width; 3755 } 3756 3757 /* 3758 * With an 80 MHz channel, we might have the puncturing in the primary 3759 * 40 Mhz channel, but that's not valid when downgraded to 40 MHz width. 3760 * In that case, downgrade again. 3761 */ 3762 if (!cfg80211_chandef_valid(c) && c->punctured) 3763 goto again; 3764 3765 WARN_ON_ONCE(!cfg80211_chandef_valid(c)); 3766 } 3767 3768 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 3769 struct cfg80211_csa_settings *csa_settings) 3770 { 3771 struct sk_buff *skb; 3772 struct ieee80211_mgmt *mgmt; 3773 struct ieee80211_local *local = sdata->local; 3774 int freq; 3775 int hdr_len = offsetofend(struct ieee80211_mgmt, 3776 u.action.u.chan_switch); 3777 u8 *pos; 3778 3779 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3780 sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 3781 return -EOPNOTSUPP; 3782 3783 skb = dev_alloc_skb(local->tx_headroom + hdr_len + 3784 5 + /* channel switch announcement element */ 3785 3 + /* secondary channel offset element */ 3786 5 + /* wide bandwidth channel switch announcement */ 3787 8); /* mesh channel switch parameters element */ 3788 if (!skb) 3789 return -ENOMEM; 3790 3791 skb_reserve(skb, local->tx_headroom); 3792 mgmt = skb_put_zero(skb, hdr_len); 3793 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3794 IEEE80211_STYPE_ACTION); 3795 3796 eth_broadcast_addr(mgmt->da); 3797 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3798 if (ieee80211_vif_is_mesh(&sdata->vif)) { 3799 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); 3800 } else { 3801 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 3802 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 3803 } 3804 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; 3805 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; 3806 pos = skb_put(skb, 5); 3807 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ 3808 *pos++ = 3; /* IE length */ 3809 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ 3810 freq = csa_settings->chandef.chan->center_freq; 3811 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ 3812 *pos++ = csa_settings->count; /* count */ 3813 3814 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { 3815 enum nl80211_channel_type ch_type; 3816 3817 skb_put(skb, 3); 3818 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ 3819 *pos++ = 1; /* IE length */ 3820 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); 3821 if (ch_type == NL80211_CHAN_HT40PLUS) 3822 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 3823 else 3824 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 3825 } 3826 3827 if (ieee80211_vif_is_mesh(&sdata->vif)) { 3828 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3829 3830 skb_put(skb, 8); 3831 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ 3832 *pos++ = 6; /* IE length */ 3833 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ 3834 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ 3835 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; 3836 *pos++ |= csa_settings->block_tx ? 3837 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; 3838 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ 3839 pos += 2; 3840 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ 3841 pos += 2; 3842 } 3843 3844 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 || 3845 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 || 3846 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) { 3847 skb_put(skb, 5); 3848 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef); 3849 } 3850 3851 ieee80211_tx_skb(sdata, skb); 3852 return 0; 3853 } 3854 3855 static bool 3856 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) 3857 { 3858 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); 3859 int skip; 3860 3861 if (end > 0) 3862 return false; 3863 3864 /* One shot NOA */ 3865 if (data->count[i] == 1) 3866 return false; 3867 3868 if (data->desc[i].interval == 0) 3869 return false; 3870 3871 /* End time is in the past, check for repetitions */ 3872 skip = DIV_ROUND_UP(-end, data->desc[i].interval); 3873 if (data->count[i] < 255) { 3874 if (data->count[i] <= skip) { 3875 data->count[i] = 0; 3876 return false; 3877 } 3878 3879 data->count[i] -= skip; 3880 } 3881 3882 data->desc[i].start += skip * data->desc[i].interval; 3883 3884 return true; 3885 } 3886 3887 static bool 3888 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, 3889 s32 *offset) 3890 { 3891 bool ret = false; 3892 int i; 3893 3894 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3895 s32 cur; 3896 3897 if (!data->count[i]) 3898 continue; 3899 3900 if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) 3901 ret = true; 3902 3903 cur = data->desc[i].start - tsf; 3904 if (cur > *offset) 3905 continue; 3906 3907 cur = data->desc[i].start + data->desc[i].duration - tsf; 3908 if (cur > *offset) 3909 *offset = cur; 3910 } 3911 3912 return ret; 3913 } 3914 3915 static u32 3916 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) 3917 { 3918 s32 offset = 0; 3919 int tries = 0; 3920 /* 3921 * arbitrary limit, used to avoid infinite loops when combined NoA 3922 * descriptors cover the full time period. 3923 */ 3924 int max_tries = 5; 3925 3926 ieee80211_extend_absent_time(data, tsf, &offset); 3927 do { 3928 if (!ieee80211_extend_absent_time(data, tsf, &offset)) 3929 break; 3930 3931 tries++; 3932 } while (tries < max_tries); 3933 3934 return offset; 3935 } 3936 3937 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) 3938 { 3939 u32 next_offset = BIT(31) - 1; 3940 int i; 3941 3942 data->absent = 0; 3943 data->has_next_tsf = false; 3944 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3945 s32 start; 3946 3947 if (!data->count[i]) 3948 continue; 3949 3950 ieee80211_extend_noa_desc(data, tsf, i); 3951 start = data->desc[i].start - tsf; 3952 if (start <= 0) 3953 data->absent |= BIT(i); 3954 3955 if (next_offset > start) 3956 next_offset = start; 3957 3958 data->has_next_tsf = true; 3959 } 3960 3961 if (data->absent) 3962 next_offset = ieee80211_get_noa_absent_time(data, tsf); 3963 3964 data->next_tsf = tsf + next_offset; 3965 } 3966 EXPORT_SYMBOL(ieee80211_update_p2p_noa); 3967 3968 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, 3969 struct ieee80211_noa_data *data, u32 tsf) 3970 { 3971 int ret = 0; 3972 int i; 3973 3974 memset(data, 0, sizeof(*data)); 3975 3976 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3977 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; 3978 3979 if (!desc->count || !desc->duration) 3980 continue; 3981 3982 data->count[i] = desc->count; 3983 data->desc[i].start = le32_to_cpu(desc->start_time); 3984 data->desc[i].duration = le32_to_cpu(desc->duration); 3985 data->desc[i].interval = le32_to_cpu(desc->interval); 3986 3987 if (data->count[i] > 1 && 3988 data->desc[i].interval < data->desc[i].duration) 3989 continue; 3990 3991 ieee80211_extend_noa_desc(data, tsf, i); 3992 ret++; 3993 } 3994 3995 if (ret) 3996 ieee80211_update_p2p_noa(data, tsf); 3997 3998 return ret; 3999 } 4000 EXPORT_SYMBOL(ieee80211_parse_p2p_noa); 4001 4002 void ieee80211_recalc_dtim(struct ieee80211_sub_if_data *sdata, u64 tsf) 4003 { 4004 u64 dtim_count = 0; 4005 u32 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; 4006 u8 dtim_period = sdata->vif.bss_conf.dtim_period; 4007 struct ps_data *ps; 4008 u8 bcns_from_dtim; 4009 4010 if (tsf == -1ULL || !beacon_int || !dtim_period) 4011 return; 4012 4013 if (sdata->vif.type == NL80211_IFTYPE_AP || 4014 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { 4015 if (!sdata->bss) 4016 return; 4017 4018 ps = &sdata->bss->ps; 4019 } else if (ieee80211_vif_is_mesh(&sdata->vif)) { 4020 ps = &sdata->u.mesh.ps; 4021 } else { 4022 return; 4023 } 4024 4025 /* 4026 * actually finds last dtim_count, mac80211 will update in 4027 * __beacon_add_tim(). 4028 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period 4029 */ 4030 do_div(tsf, beacon_int); 4031 bcns_from_dtim = do_div(tsf, dtim_period); 4032 /* just had a DTIM */ 4033 if (!bcns_from_dtim) 4034 dtim_count = 0; 4035 else 4036 dtim_count = dtim_period - bcns_from_dtim; 4037 4038 ps->dtim_count = dtim_count; 4039 } 4040 4041 /* 4042 * Given a long beacon period, calculate the current index into 4043 * that period to determine the number of TSBTTs until the next TBTT. 4044 * It is completely valid to have a short beacon period that differs 4045 * from the dtim period (i.e a TBTT thats not a DTIM). 4046 */ 4047 void ieee80211_recalc_sb_count(struct ieee80211_sub_if_data *sdata, u64 tsf) 4048 { 4049 u32 sb_idx; 4050 struct ps_data *ps = &sdata->bss->ps; 4051 u8 lb_period = sdata->vif.bss_conf.s1g_long_beacon_period; 4052 u32 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; 4053 4054 /* No mesh / IBSS support for short beaconing */ 4055 if (tsf == -1ULL || !lb_period || 4056 (sdata->vif.type != NL80211_IFTYPE_AP && 4057 sdata->vif.type != NL80211_IFTYPE_AP_VLAN)) 4058 return; 4059 4060 /* find the current TSBTT index in our lb_period */ 4061 do_div(tsf, beacon_int); 4062 sb_idx = do_div(tsf, lb_period); 4063 4064 /* num TSBTTs until the next TBTT */ 4065 ps->sb_count = sb_idx ? lb_period - sb_idx : 0; 4066 } 4067 4068 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, 4069 struct ieee80211_chanctx *ctx) 4070 { 4071 struct ieee80211_link_data *link; 4072 u8 radar_detect = 0; 4073 4074 lockdep_assert_wiphy(local->hw.wiphy); 4075 4076 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) 4077 return 0; 4078 4079 for_each_sdata_link(local, link) { 4080 if (rcu_access_pointer(link->conf->chanctx_conf) == &ctx->conf) { 4081 /* 4082 * An in-place reservation context should not have any 4083 * assigned links until it replaces the other context. 4084 */ 4085 WARN_ON(ctx->replace_state == 4086 IEEE80211_CHANCTX_REPLACES_OTHER); 4087 4088 if (link->radar_required) 4089 radar_detect |= 4090 BIT(link->conf->chanreq.oper.width); 4091 } 4092 4093 if (link->reserved_chanctx == ctx && 4094 link->reserved_radar_required) 4095 radar_detect |= BIT(link->reserved.oper.width); 4096 } 4097 4098 return radar_detect; 4099 } 4100 4101 bool ieee80211_is_radio_idx_in_scan_req(struct wiphy *wiphy, 4102 struct cfg80211_scan_request *scan_req, 4103 int radio_idx) 4104 { 4105 struct ieee80211_channel *chan; 4106 int i, chan_radio_idx; 4107 4108 for (i = 0; i < scan_req->n_channels; i++) { 4109 chan = scan_req->channels[i]; 4110 chan_radio_idx = cfg80211_get_radio_idx_by_chan(wiphy, chan); 4111 4112 /* The radio index either matched successfully, or an error 4113 * occurred. For example, if radio-level information is 4114 * missing, the same error value is returned. This 4115 * typically implies a single-radio setup, in which case 4116 * the operation should not be allowed. 4117 */ 4118 if (chan_radio_idx == radio_idx) 4119 return true; 4120 } 4121 4122 return false; 4123 } 4124 4125 static u32 4126 __ieee80211_get_radio_mask(struct ieee80211_sub_if_data *sdata) 4127 { 4128 struct ieee80211_bss_conf *link_conf; 4129 struct ieee80211_chanctx_conf *conf; 4130 unsigned int link_id; 4131 u32 mask = 0; 4132 4133 for_each_vif_active_link(&sdata->vif, link_conf, link_id) { 4134 conf = sdata_dereference(link_conf->chanctx_conf, sdata); 4135 if (!conf || conf->radio_idx < 0) 4136 continue; 4137 4138 mask |= BIT(conf->radio_idx); 4139 } 4140 4141 return mask; 4142 } 4143 4144 u32 ieee80211_get_radio_mask(struct wiphy *wiphy, struct net_device *dev) 4145 { 4146 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 4147 4148 return __ieee80211_get_radio_mask(sdata); 4149 } 4150 4151 static bool 4152 ieee80211_sdata_uses_radio(struct ieee80211_sub_if_data *sdata, int radio_idx) 4153 { 4154 if (radio_idx < 0) 4155 return true; 4156 4157 return __ieee80211_get_radio_mask(sdata) & BIT(radio_idx); 4158 } 4159 4160 static int 4161 ieee80211_fill_ifcomb_params(struct ieee80211_local *local, 4162 struct iface_combination_params *params, 4163 const struct cfg80211_chan_def *chandef, 4164 struct ieee80211_sub_if_data *sdata) 4165 { 4166 struct ieee80211_sub_if_data *sdata_iter; 4167 struct ieee80211_chanctx *ctx; 4168 int total = !!sdata; 4169 4170 list_for_each_entry(ctx, &local->chanctx_list, list) { 4171 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 4172 continue; 4173 4174 if (params->radio_idx >= 0 && 4175 ctx->conf.radio_idx != params->radio_idx) 4176 continue; 4177 4178 params->radar_detect |= 4179 ieee80211_chanctx_radar_detect(local, ctx); 4180 4181 if (chandef && ctx->mode != IEEE80211_CHANCTX_EXCLUSIVE && 4182 cfg80211_chandef_compatible(chandef, &ctx->conf.def)) 4183 continue; 4184 4185 params->num_different_channels++; 4186 } 4187 4188 list_for_each_entry(sdata_iter, &local->interfaces, list) { 4189 struct wireless_dev *wdev_iter; 4190 4191 wdev_iter = &sdata_iter->wdev; 4192 4193 if (sdata_iter == sdata || 4194 !ieee80211_sdata_running(sdata_iter) || 4195 cfg80211_iftype_allowed(local->hw.wiphy, 4196 wdev_iter->iftype, 0, 1)) 4197 continue; 4198 4199 if (!ieee80211_sdata_uses_radio(sdata_iter, params->radio_idx)) 4200 continue; 4201 4202 params->iftype_num[wdev_iter->iftype]++; 4203 total++; 4204 } 4205 4206 return total; 4207 } 4208 4209 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 4210 const struct cfg80211_chan_def *chandef, 4211 enum ieee80211_chanctx_mode chanmode, 4212 u8 radar_detect, int radio_idx) 4213 { 4214 bool shared = chanmode == IEEE80211_CHANCTX_SHARED; 4215 struct ieee80211_local *local = sdata->local; 4216 enum nl80211_iftype iftype = sdata->wdev.iftype; 4217 struct iface_combination_params params = { 4218 .radar_detect = radar_detect, 4219 .radio_idx = radio_idx, 4220 }; 4221 int total; 4222 4223 lockdep_assert_wiphy(local->hw.wiphy); 4224 4225 if (WARN_ON(hweight32(radar_detect) > 1)) 4226 return -EINVAL; 4227 4228 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && 4229 !chandef->chan)) 4230 return -EINVAL; 4231 4232 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) 4233 return -EINVAL; 4234 4235 if (sdata->vif.type == NL80211_IFTYPE_AP || 4236 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) { 4237 /* 4238 * always passing this is harmless, since it'll be the 4239 * same value that cfg80211 finds if it finds the same 4240 * interface ... and that's always allowed 4241 */ 4242 params.new_beacon_int = sdata->vif.bss_conf.beacon_int; 4243 } 4244 4245 /* Always allow software iftypes */ 4246 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) { 4247 if (radar_detect) 4248 return -EINVAL; 4249 return 0; 4250 } 4251 4252 if (chandef) 4253 params.num_different_channels = 1; 4254 4255 if (iftype != NL80211_IFTYPE_UNSPECIFIED) 4256 params.iftype_num[iftype] = 1; 4257 4258 total = ieee80211_fill_ifcomb_params(local, ¶ms, 4259 shared ? chandef : NULL, 4260 sdata); 4261 if (total == 1 && !params.radar_detect) 4262 return 0; 4263 4264 return cfg80211_check_combinations(local->hw.wiphy, ¶ms); 4265 } 4266 4267 static void 4268 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, 4269 void *data) 4270 { 4271 u32 *max_num_different_channels = data; 4272 4273 *max_num_different_channels = max(*max_num_different_channels, 4274 c->num_different_channels); 4275 } 4276 4277 int ieee80211_max_num_channels(struct ieee80211_local *local, int radio_idx) 4278 { 4279 u32 max_num_different_channels = 1; 4280 int err; 4281 struct iface_combination_params params = { 4282 .radio_idx = radio_idx, 4283 }; 4284 4285 lockdep_assert_wiphy(local->hw.wiphy); 4286 4287 ieee80211_fill_ifcomb_params(local, ¶ms, NULL, NULL); 4288 4289 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms, 4290 ieee80211_iter_max_chans, 4291 &max_num_different_channels); 4292 if (err < 0) 4293 return err; 4294 4295 return max_num_different_channels; 4296 } 4297 4298 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 4299 struct ieee80211_sta_s1g_cap *caps, 4300 struct sk_buff *skb) 4301 { 4302 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4303 struct ieee80211_s1g_cap s1g_capab; 4304 u8 *pos; 4305 int i; 4306 4307 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 4308 return; 4309 4310 if (!caps->s1g) 4311 return; 4312 4313 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap)); 4314 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs)); 4315 4316 /* override the capability info */ 4317 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) { 4318 u8 mask = ifmgd->s1g_capa_mask.capab_info[i]; 4319 4320 s1g_capab.capab_info[i] &= ~mask; 4321 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask; 4322 } 4323 4324 /* then MCS and NSS set */ 4325 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) { 4326 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i]; 4327 4328 s1g_capab.supp_mcs_nss[i] &= ~mask; 4329 s1g_capab.supp_mcs_nss[i] |= 4330 ifmgd->s1g_capa.supp_mcs_nss[i] & mask; 4331 } 4332 4333 pos = skb_put(skb, 2 + sizeof(s1g_capab)); 4334 *pos++ = WLAN_EID_S1G_CAPABILITIES; 4335 *pos++ = sizeof(s1g_capab); 4336 4337 memcpy(pos, &s1g_capab, sizeof(s1g_capab)); 4338 } 4339 4340 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 4341 struct sk_buff *skb) 4342 { 4343 u8 *pos = skb_put(skb, 3); 4344 4345 *pos++ = WLAN_EID_AID_REQUEST; 4346 *pos++ = 1; 4347 *pos++ = 0; 4348 } 4349 4350 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) 4351 { 4352 *buf++ = WLAN_EID_VENDOR_SPECIFIC; 4353 *buf++ = 7; /* len */ 4354 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ 4355 *buf++ = 0x50; 4356 *buf++ = 0xf2; 4357 *buf++ = 2; /* WME */ 4358 *buf++ = 0; /* WME info */ 4359 *buf++ = 1; /* WME ver */ 4360 *buf++ = qosinfo; /* U-APSD no in use */ 4361 4362 return buf; 4363 } 4364 4365 void ieee80211_txq_get_depth(struct ieee80211_txq *txq, 4366 unsigned long *frame_cnt, 4367 unsigned long *byte_cnt) 4368 { 4369 struct txq_info *txqi = to_txq_info(txq); 4370 u32 frag_cnt = 0, frag_bytes = 0; 4371 struct sk_buff *skb; 4372 4373 skb_queue_walk(&txqi->frags, skb) { 4374 frag_cnt++; 4375 frag_bytes += skb->len; 4376 } 4377 4378 if (frame_cnt) 4379 *frame_cnt = txqi->tin.backlog_packets + frag_cnt; 4380 4381 if (byte_cnt) 4382 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes; 4383 } 4384 EXPORT_SYMBOL(ieee80211_txq_get_depth); 4385 4386 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = { 4387 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO, 4388 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI, 4389 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE, 4390 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK 4391 }; 4392 4393 u16 ieee80211_encode_usf(int listen_interval) 4394 { 4395 static const int listen_int_usf[] = { 1, 10, 1000, 10000 }; 4396 u16 ui, usf = 0; 4397 4398 /* find greatest USF */ 4399 while (usf < IEEE80211_MAX_USF) { 4400 if (listen_interval % listen_int_usf[usf + 1]) 4401 break; 4402 usf += 1; 4403 } 4404 ui = listen_interval / listen_int_usf[usf]; 4405 4406 /* error if there is a remainder. Should've been checked by user */ 4407 WARN_ON_ONCE(ui > IEEE80211_MAX_UI); 4408 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) | 4409 FIELD_PREP(LISTEN_INT_UI, ui); 4410 4411 return (u16) listen_interval; 4412 } 4413 4414 /* this may return more than ieee80211_put_eht_cap() will need */ 4415 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata) 4416 { 4417 const struct ieee80211_sta_he_cap *he_cap; 4418 const struct ieee80211_sta_eht_cap *eht_cap; 4419 struct ieee80211_supported_band *sband; 4420 bool is_ap; 4421 u8 n; 4422 4423 sband = ieee80211_get_sband(sdata); 4424 if (!sband) 4425 return 0; 4426 4427 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 4428 eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); 4429 if (!he_cap || !eht_cap) 4430 return 0; 4431 4432 is_ap = sdata->vif.type == NL80211_IFTYPE_AP; 4433 4434 n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 4435 &eht_cap->eht_cap_elem, 4436 is_ap); 4437 return 2 + 1 + 4438 sizeof(eht_cap->eht_cap_elem) + n + 4439 ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], 4440 eht_cap->eht_cap_elem.phy_cap_info); 4441 return 0; 4442 } 4443 4444 int ieee80211_put_eht_cap(struct sk_buff *skb, 4445 struct ieee80211_sub_if_data *sdata, 4446 const struct ieee80211_supported_band *sband, 4447 const struct ieee80211_conn_settings *conn) 4448 { 4449 const struct ieee80211_sta_he_cap *he_cap = 4450 ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 4451 const struct ieee80211_sta_eht_cap *eht_cap = 4452 ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); 4453 bool for_ap = sdata->vif.type == NL80211_IFTYPE_AP; 4454 struct ieee80211_eht_cap_elem_fixed fixed; 4455 struct ieee80211_he_cap_elem he; 4456 u8 mcs_nss_len, ppet_len; 4457 u8 orig_mcs_nss_len; 4458 u8 ie_len; 4459 4460 if (!conn) 4461 conn = &ieee80211_conn_settings_unlimited; 4462 4463 /* Make sure we have place for the IE */ 4464 if (!he_cap || !eht_cap) 4465 return 0; 4466 4467 orig_mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 4468 &eht_cap->eht_cap_elem, 4469 for_ap); 4470 4471 ieee80211_get_adjusted_he_cap(conn, he_cap, &he); 4472 4473 fixed = eht_cap->eht_cap_elem; 4474 4475 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_80) 4476 fixed.phy_cap_info[6] &= 4477 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_80MHZ; 4478 4479 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) { 4480 fixed.phy_cap_info[1] &= 4481 ~IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK; 4482 fixed.phy_cap_info[2] &= 4483 ~IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK; 4484 fixed.phy_cap_info[6] &= 4485 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_160MHZ; 4486 } 4487 4488 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_320) { 4489 fixed.phy_cap_info[0] &= 4490 ~IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ; 4491 fixed.phy_cap_info[1] &= 4492 ~IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK; 4493 fixed.phy_cap_info[2] &= 4494 ~IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK; 4495 fixed.phy_cap_info[6] &= 4496 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_320MHZ; 4497 } 4498 4499 if (conn->bw_limit == IEEE80211_CONN_BW_LIMIT_20) 4500 fixed.phy_cap_info[0] &= 4501 ~IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ; 4502 4503 mcs_nss_len = ieee80211_eht_mcs_nss_size(&he, &fixed, for_ap); 4504 ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], 4505 fixed.phy_cap_info); 4506 4507 ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len; 4508 if (skb_tailroom(skb) < ie_len) 4509 return -ENOBUFS; 4510 4511 skb_put_u8(skb, WLAN_EID_EXTENSION); 4512 skb_put_u8(skb, ie_len - 2); 4513 skb_put_u8(skb, WLAN_EID_EXT_EHT_CAPABILITY); 4514 skb_put_data(skb, &fixed, sizeof(fixed)); 4515 4516 if (mcs_nss_len == 4 && orig_mcs_nss_len != 4) { 4517 /* 4518 * If the (non-AP) STA became 20 MHz only, then convert from 4519 * <=80 to 20-MHz-only format, where MCSes are indicated in 4520 * the groups 0-7, 8-9, 10-11, 12-13 rather than just 0-9, 4521 * 10-11, 12-13. Thus, use 0-9 for 0-7 and 8-9. 4522 */ 4523 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss); 4524 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss); 4525 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs11_max_nss); 4526 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs13_max_nss); 4527 } else { 4528 skb_put_data(skb, &eht_cap->eht_mcs_nss_supp, mcs_nss_len); 4529 } 4530 4531 if (ppet_len) 4532 skb_put_data(skb, &eht_cap->eht_ppe_thres, ppet_len); 4533 4534 return 0; 4535 } 4536 4537 int ieee80211_put_uhr_cap(struct sk_buff *skb, 4538 struct ieee80211_sub_if_data *sdata, 4539 const struct ieee80211_supported_band *sband) 4540 { 4541 const struct ieee80211_sta_uhr_cap *uhr_cap = 4542 ieee80211_get_uhr_iftype_cap_vif(sband, &sdata->vif); 4543 int len; 4544 4545 if (!uhr_cap) 4546 return 0; 4547 4548 len = 2 + 1 + sizeof(struct ieee80211_uhr_cap) + 4549 sizeof(struct ieee80211_uhr_cap_phy); 4550 4551 if (skb_tailroom(skb) < len) 4552 return -ENOBUFS; 4553 4554 skb_put_u8(skb, WLAN_EID_EXTENSION); 4555 skb_put_u8(skb, len - 2); 4556 skb_put_u8(skb, WLAN_EID_EXT_UHR_CAPA); 4557 skb_put_data(skb, &uhr_cap->mac, sizeof(uhr_cap->mac)); 4558 skb_put_data(skb, &uhr_cap->phy, sizeof(uhr_cap->phy)); 4559 4560 return 0; 4561 } 4562 4563 const char *ieee80211_conn_mode_str(enum ieee80211_conn_mode mode) 4564 { 4565 static const char * const modes[] = { 4566 [IEEE80211_CONN_MODE_S1G] = "S1G", 4567 [IEEE80211_CONN_MODE_LEGACY] = "legacy", 4568 [IEEE80211_CONN_MODE_HT] = "HT", 4569 [IEEE80211_CONN_MODE_VHT] = "VHT", 4570 [IEEE80211_CONN_MODE_HE] = "HE", 4571 [IEEE80211_CONN_MODE_EHT] = "EHT", 4572 [IEEE80211_CONN_MODE_UHR] = "UHR", 4573 }; 4574 4575 if (WARN_ON(mode >= ARRAY_SIZE(modes))) 4576 return "<out of range>"; 4577 4578 return modes[mode] ?: "<missing string>"; 4579 } 4580 4581 enum ieee80211_conn_bw_limit 4582 ieee80211_min_bw_limit_from_chandef(struct cfg80211_chan_def *chandef) 4583 { 4584 switch (chandef->width) { 4585 case NL80211_CHAN_WIDTH_20_NOHT: 4586 case NL80211_CHAN_WIDTH_20: 4587 return IEEE80211_CONN_BW_LIMIT_20; 4588 case NL80211_CHAN_WIDTH_40: 4589 return IEEE80211_CONN_BW_LIMIT_40; 4590 case NL80211_CHAN_WIDTH_80: 4591 return IEEE80211_CONN_BW_LIMIT_80; 4592 case NL80211_CHAN_WIDTH_80P80: 4593 case NL80211_CHAN_WIDTH_160: 4594 return IEEE80211_CONN_BW_LIMIT_160; 4595 case NL80211_CHAN_WIDTH_320: 4596 return IEEE80211_CONN_BW_LIMIT_320; 4597 default: 4598 WARN(1, "unhandled chandef width %d\n", chandef->width); 4599 return IEEE80211_CONN_BW_LIMIT_20; 4600 } 4601 } 4602 4603 void ieee80211_clear_tpe(struct ieee80211_parsed_tpe *tpe) 4604 { 4605 for (int i = 0; i < 2; i++) { 4606 tpe->max_local[i].valid = false; 4607 memset(tpe->max_local[i].power, 4608 IEEE80211_TPE_MAX_TX_PWR_NO_CONSTRAINT, 4609 sizeof(tpe->max_local[i].power)); 4610 4611 tpe->max_reg_client[i].valid = false; 4612 memset(tpe->max_reg_client[i].power, 4613 IEEE80211_TPE_MAX_TX_PWR_NO_CONSTRAINT, 4614 sizeof(tpe->max_reg_client[i].power)); 4615 4616 tpe->psd_local[i].valid = false; 4617 memset(tpe->psd_local[i].power, 4618 IEEE80211_TPE_PSD_NO_LIMIT, 4619 sizeof(tpe->psd_local[i].power)); 4620 4621 tpe->psd_reg_client[i].valid = false; 4622 memset(tpe->psd_reg_client[i].power, 4623 IEEE80211_TPE_PSD_NO_LIMIT, 4624 sizeof(tpe->psd_reg_client[i].power)); 4625 } 4626 } 4627 4628 bool ieee80211_vif_nan_started(struct ieee80211_vif *vif) 4629 { 4630 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 4631 4632 return vif->type == NL80211_IFTYPE_NAN && sdata->u.nan.started; 4633 } 4634 EXPORT_SYMBOL_GPL(ieee80211_vif_nan_started); 4635