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) 2018-2024 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 EXPORT_SYMBOL(ieee80211_get_bssid); 105 106 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) 107 { 108 struct sk_buff *skb; 109 struct ieee80211_hdr *hdr; 110 111 skb_queue_walk(&tx->skbs, skb) { 112 hdr = (struct ieee80211_hdr *) skb->data; 113 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 114 } 115 } 116 117 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 118 int rate, int erp, int short_preamble) 119 { 120 int dur; 121 122 /* calculate duration (in microseconds, rounded up to next higher 123 * integer if it includes a fractional microsecond) to send frame of 124 * len bytes (does not include FCS) at the given rate. Duration will 125 * also include SIFS. 126 * 127 * rate is in 100 kbps, so divident is multiplied by 10 in the 128 * DIV_ROUND_UP() operations. 129 */ 130 131 if (band == NL80211_BAND_5GHZ || erp) { 132 /* 133 * OFDM: 134 * 135 * N_DBPS = DATARATE x 4 136 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS) 137 * (16 = SIGNAL time, 6 = tail bits) 138 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext 139 * 140 * T_SYM = 4 usec 141 * 802.11a - 18.5.2: aSIFSTime = 16 usec 142 * 802.11g - 19.8.4: aSIFSTime = 10 usec + 143 * signal ext = 6 usec 144 */ 145 dur = 16; /* SIFS + signal ext */ 146 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */ 147 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */ 148 149 /* rates should already consider the channel bandwidth, 150 * don't apply divisor again. 151 */ 152 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10, 153 4 * rate); /* T_SYM x N_SYM */ 154 } else { 155 /* 156 * 802.11b or 802.11g with 802.11b compatibility: 157 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime + 158 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0. 159 * 160 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4 161 * aSIFSTime = 10 usec 162 * aPreambleLength = 144 usec or 72 usec with short preamble 163 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble 164 */ 165 dur = 10; /* aSIFSTime = 10 usec */ 166 dur += short_preamble ? (72 + 24) : (144 + 48); 167 168 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate); 169 } 170 171 return dur; 172 } 173 174 /* Exported duration function for driver use */ 175 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, 176 struct ieee80211_vif *vif, 177 enum nl80211_band band, 178 size_t frame_len, 179 struct ieee80211_rate *rate) 180 { 181 struct ieee80211_sub_if_data *sdata; 182 u16 dur; 183 int erp; 184 bool short_preamble = false; 185 186 erp = 0; 187 if (vif) { 188 sdata = vif_to_sdata(vif); 189 short_preamble = sdata->vif.bss_conf.use_short_preamble; 190 if (sdata->deflink.operating_11g_mode) 191 erp = rate->flags & IEEE80211_RATE_ERP_G; 192 } 193 194 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp, 195 short_preamble); 196 197 return cpu_to_le16(dur); 198 } 199 EXPORT_SYMBOL(ieee80211_generic_frame_duration); 200 201 __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, 202 struct ieee80211_vif *vif, size_t frame_len, 203 const struct ieee80211_tx_info *frame_txctl) 204 { 205 struct ieee80211_local *local = hw_to_local(hw); 206 struct ieee80211_rate *rate; 207 struct ieee80211_sub_if_data *sdata; 208 bool short_preamble; 209 int erp, bitrate; 210 u16 dur; 211 struct ieee80211_supported_band *sband; 212 213 sband = local->hw.wiphy->bands[frame_txctl->band]; 214 215 short_preamble = false; 216 217 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 218 219 erp = 0; 220 if (vif) { 221 sdata = vif_to_sdata(vif); 222 short_preamble = sdata->vif.bss_conf.use_short_preamble; 223 if (sdata->deflink.operating_11g_mode) 224 erp = rate->flags & IEEE80211_RATE_ERP_G; 225 } 226 227 bitrate = rate->bitrate; 228 229 /* CTS duration */ 230 dur = ieee80211_frame_duration(sband->band, 10, bitrate, 231 erp, short_preamble); 232 /* Data frame duration */ 233 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate, 234 erp, short_preamble); 235 /* ACK duration */ 236 dur += ieee80211_frame_duration(sband->band, 10, bitrate, 237 erp, short_preamble); 238 239 return cpu_to_le16(dur); 240 } 241 EXPORT_SYMBOL(ieee80211_rts_duration); 242 243 __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, 244 struct ieee80211_vif *vif, 245 size_t frame_len, 246 const struct ieee80211_tx_info *frame_txctl) 247 { 248 struct ieee80211_local *local = hw_to_local(hw); 249 struct ieee80211_rate *rate; 250 struct ieee80211_sub_if_data *sdata; 251 bool short_preamble; 252 int erp, bitrate; 253 u16 dur; 254 struct ieee80211_supported_band *sband; 255 256 sband = local->hw.wiphy->bands[frame_txctl->band]; 257 258 short_preamble = false; 259 260 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx]; 261 erp = 0; 262 if (vif) { 263 sdata = vif_to_sdata(vif); 264 short_preamble = sdata->vif.bss_conf.use_short_preamble; 265 if (sdata->deflink.operating_11g_mode) 266 erp = rate->flags & IEEE80211_RATE_ERP_G; 267 } 268 269 bitrate = rate->bitrate; 270 271 /* Data frame duration */ 272 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate, 273 erp, short_preamble); 274 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) { 275 /* ACK duration */ 276 dur += ieee80211_frame_duration(sband->band, 10, bitrate, 277 erp, short_preamble); 278 } 279 280 return cpu_to_le16(dur); 281 } 282 EXPORT_SYMBOL(ieee80211_ctstoself_duration); 283 284 static void wake_tx_push_queue(struct ieee80211_local *local, 285 struct ieee80211_sub_if_data *sdata, 286 struct ieee80211_txq *queue) 287 { 288 struct ieee80211_tx_control control = { 289 .sta = queue->sta, 290 }; 291 struct sk_buff *skb; 292 293 while (1) { 294 skb = ieee80211_tx_dequeue(&local->hw, queue); 295 if (!skb) 296 break; 297 298 drv_tx(local, &control, skb); 299 } 300 } 301 302 /* wake_tx_queue handler for driver not implementing a custom one*/ 303 void ieee80211_handle_wake_tx_queue(struct ieee80211_hw *hw, 304 struct ieee80211_txq *txq) 305 { 306 struct ieee80211_local *local = hw_to_local(hw); 307 struct ieee80211_sub_if_data *sdata = vif_to_sdata(txq->vif); 308 struct ieee80211_txq *queue; 309 310 spin_lock(&local->handle_wake_tx_queue_lock); 311 312 /* Use ieee80211_next_txq() for airtime fairness accounting */ 313 ieee80211_txq_schedule_start(hw, txq->ac); 314 while ((queue = ieee80211_next_txq(hw, txq->ac))) { 315 wake_tx_push_queue(local, sdata, queue); 316 ieee80211_return_txq(hw, queue, false); 317 } 318 ieee80211_txq_schedule_end(hw, txq->ac); 319 spin_unlock(&local->handle_wake_tx_queue_lock); 320 } 321 EXPORT_SYMBOL(ieee80211_handle_wake_tx_queue); 322 323 static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac) 324 { 325 struct ieee80211_local *local = sdata->local; 326 struct ieee80211_vif *vif = &sdata->vif; 327 struct fq *fq = &local->fq; 328 struct ps_data *ps = NULL; 329 struct txq_info *txqi; 330 struct sta_info *sta; 331 int i; 332 333 local_bh_disable(); 334 spin_lock(&fq->lock); 335 336 if (!test_bit(SDATA_STATE_RUNNING, &sdata->state)) 337 goto out; 338 339 if (sdata->vif.type == NL80211_IFTYPE_AP) 340 ps = &sdata->bss->ps; 341 342 list_for_each_entry_rcu(sta, &local->sta_list, list) { 343 if (sdata != sta->sdata) 344 continue; 345 346 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { 347 struct ieee80211_txq *txq = sta->sta.txq[i]; 348 349 if (!txq) 350 continue; 351 352 txqi = to_txq_info(txq); 353 354 if (ac != txq->ac) 355 continue; 356 357 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, 358 &txqi->flags)) 359 continue; 360 361 spin_unlock(&fq->lock); 362 drv_wake_tx_queue(local, txqi); 363 spin_lock(&fq->lock); 364 } 365 } 366 367 if (!vif->txq) 368 goto out; 369 370 txqi = to_txq_info(vif->txq); 371 372 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) || 373 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac) 374 goto out; 375 376 spin_unlock(&fq->lock); 377 378 drv_wake_tx_queue(local, txqi); 379 local_bh_enable(); 380 return; 381 out: 382 spin_unlock(&fq->lock); 383 local_bh_enable(); 384 } 385 386 static void 387 __releases(&local->queue_stop_reason_lock) 388 __acquires(&local->queue_stop_reason_lock) 389 _ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags) 390 { 391 struct ieee80211_sub_if_data *sdata; 392 int n_acs = IEEE80211_NUM_ACS; 393 int i; 394 395 rcu_read_lock(); 396 397 if (local->hw.queues < IEEE80211_NUM_ACS) 398 n_acs = 1; 399 400 for (i = 0; i < local->hw.queues; i++) { 401 if (local->queue_stop_reasons[i]) 402 continue; 403 404 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags); 405 list_for_each_entry_rcu(sdata, &local->interfaces, list) { 406 int ac; 407 408 for (ac = 0; ac < n_acs; ac++) { 409 int ac_queue = sdata->vif.hw_queue[ac]; 410 411 if (ac_queue == i || 412 sdata->vif.cab_queue == i) 413 __ieee80211_wake_txqs(sdata, ac); 414 } 415 } 416 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags); 417 } 418 419 rcu_read_unlock(); 420 } 421 422 void ieee80211_wake_txqs(struct tasklet_struct *t) 423 { 424 struct ieee80211_local *local = from_tasklet(local, t, 425 wake_txqs_tasklet); 426 unsigned long flags; 427 428 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 429 _ieee80211_wake_txqs(local, &flags); 430 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 431 } 432 433 static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, 434 enum queue_stop_reason reason, 435 bool refcounted, 436 unsigned long *flags) 437 { 438 struct ieee80211_local *local = hw_to_local(hw); 439 440 trace_wake_queue(local, queue, reason); 441 442 if (WARN_ON(queue >= hw->queues)) 443 return; 444 445 if (!test_bit(reason, &local->queue_stop_reasons[queue])) 446 return; 447 448 if (!refcounted) { 449 local->q_stop_reasons[queue][reason] = 0; 450 } else { 451 local->q_stop_reasons[queue][reason]--; 452 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0)) 453 local->q_stop_reasons[queue][reason] = 0; 454 } 455 456 if (local->q_stop_reasons[queue][reason] == 0) 457 __clear_bit(reason, &local->queue_stop_reasons[queue]); 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 trace_stop_queue(local, queue, reason); 506 507 if (WARN_ON(queue >= hw->queues)) 508 return; 509 510 if (!refcounted) 511 local->q_stop_reasons[queue][reason] = 1; 512 else 513 local->q_stop_reasons[queue][reason]++; 514 515 set_bit(reason, &local->queue_stop_reasons[queue]); 516 } 517 518 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 519 enum queue_stop_reason reason, 520 bool refcounted) 521 { 522 struct ieee80211_local *local = hw_to_local(hw); 523 unsigned long flags; 524 525 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 526 __ieee80211_stop_queue(hw, queue, reason, refcounted); 527 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 528 } 529 530 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) 531 { 532 ieee80211_stop_queue_by_reason(hw, queue, 533 IEEE80211_QUEUE_STOP_REASON_DRIVER, 534 false); 535 } 536 EXPORT_SYMBOL(ieee80211_stop_queue); 537 538 void ieee80211_add_pending_skb(struct ieee80211_local *local, 539 struct sk_buff *skb) 540 { 541 struct ieee80211_hw *hw = &local->hw; 542 unsigned long flags; 543 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 544 int queue = info->hw_queue; 545 546 if (WARN_ON(!info->control.vif)) { 547 ieee80211_free_txskb(&local->hw, skb); 548 return; 549 } 550 551 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 552 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 553 false); 554 __skb_queue_tail(&local->pending[queue], skb); 555 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 556 false, &flags); 557 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 558 } 559 560 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 561 struct sk_buff_head *skbs) 562 { 563 struct ieee80211_hw *hw = &local->hw; 564 struct sk_buff *skb; 565 unsigned long flags; 566 int queue, i; 567 568 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 569 while ((skb = skb_dequeue(skbs))) { 570 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 571 572 if (WARN_ON(!info->control.vif)) { 573 ieee80211_free_txskb(&local->hw, skb); 574 continue; 575 } 576 577 queue = info->hw_queue; 578 579 __ieee80211_stop_queue(hw, queue, 580 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 581 false); 582 583 __skb_queue_tail(&local->pending[queue], skb); 584 } 585 586 for (i = 0; i < hw->queues; i++) 587 __ieee80211_wake_queue(hw, i, 588 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 589 false, &flags); 590 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 591 } 592 593 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 594 unsigned long queues, 595 enum queue_stop_reason reason, 596 bool refcounted) 597 { 598 struct ieee80211_local *local = hw_to_local(hw); 599 unsigned long flags; 600 int i; 601 602 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 603 604 for_each_set_bit(i, &queues, hw->queues) 605 __ieee80211_stop_queue(hw, i, reason, refcounted); 606 607 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 608 } 609 610 void ieee80211_stop_queues(struct ieee80211_hw *hw) 611 { 612 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 613 IEEE80211_QUEUE_STOP_REASON_DRIVER, 614 false); 615 } 616 EXPORT_SYMBOL(ieee80211_stop_queues); 617 618 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) 619 { 620 struct ieee80211_local *local = hw_to_local(hw); 621 unsigned long flags; 622 int ret; 623 624 if (WARN_ON(queue >= hw->queues)) 625 return true; 626 627 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 628 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER, 629 &local->queue_stop_reasons[queue]); 630 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 631 return ret; 632 } 633 EXPORT_SYMBOL(ieee80211_queue_stopped); 634 635 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 636 unsigned long queues, 637 enum queue_stop_reason reason, 638 bool refcounted) 639 { 640 struct ieee80211_local *local = hw_to_local(hw); 641 unsigned long flags; 642 int i; 643 644 spin_lock_irqsave(&local->queue_stop_reason_lock, flags); 645 646 for_each_set_bit(i, &queues, hw->queues) 647 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags); 648 649 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); 650 } 651 652 void ieee80211_wake_queues(struct ieee80211_hw *hw) 653 { 654 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 655 IEEE80211_QUEUE_STOP_REASON_DRIVER, 656 false); 657 } 658 EXPORT_SYMBOL(ieee80211_wake_queues); 659 660 static unsigned int 661 ieee80211_get_vif_queues(struct ieee80211_local *local, 662 struct ieee80211_sub_if_data *sdata) 663 { 664 unsigned int queues; 665 666 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) { 667 int ac; 668 669 queues = 0; 670 671 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 672 queues |= BIT(sdata->vif.hw_queue[ac]); 673 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE) 674 queues |= BIT(sdata->vif.cab_queue); 675 } else { 676 /* all queues */ 677 queues = BIT(local->hw.queues) - 1; 678 } 679 680 return queues; 681 } 682 683 void __ieee80211_flush_queues(struct ieee80211_local *local, 684 struct ieee80211_sub_if_data *sdata, 685 unsigned int queues, bool drop) 686 { 687 if (!local->ops->flush) 688 return; 689 690 /* 691 * If no queue was set, or if the HW doesn't support 692 * IEEE80211_HW_QUEUE_CONTROL - flush all queues 693 */ 694 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) 695 queues = ieee80211_get_vif_queues(local, sdata); 696 697 ieee80211_stop_queues_by_reason(&local->hw, queues, 698 IEEE80211_QUEUE_STOP_REASON_FLUSH, 699 false); 700 701 if (drop) { 702 struct sta_info *sta; 703 704 /* Purge the queues, so the frames on them won't be 705 * sent during __ieee80211_wake_queue() 706 */ 707 list_for_each_entry(sta, &local->sta_list, list) { 708 if (sdata != sta->sdata) 709 continue; 710 ieee80211_purge_sta_txqs(sta); 711 } 712 } 713 714 drv_flush(local, sdata, queues, drop); 715 716 ieee80211_wake_queues_by_reason(&local->hw, queues, 717 IEEE80211_QUEUE_STOP_REASON_FLUSH, 718 false); 719 } 720 721 void ieee80211_flush_queues(struct ieee80211_local *local, 722 struct ieee80211_sub_if_data *sdata, bool drop) 723 { 724 __ieee80211_flush_queues(local, sdata, 0, drop); 725 } 726 727 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 728 struct ieee80211_sub_if_data *sdata, 729 enum queue_stop_reason reason) 730 { 731 ieee80211_stop_queues_by_reason(&local->hw, 732 ieee80211_get_vif_queues(local, sdata), 733 reason, true); 734 } 735 736 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 737 struct ieee80211_sub_if_data *sdata, 738 enum queue_stop_reason reason) 739 { 740 ieee80211_wake_queues_by_reason(&local->hw, 741 ieee80211_get_vif_queues(local, sdata), 742 reason, true); 743 } 744 745 static void __iterate_interfaces(struct ieee80211_local *local, 746 u32 iter_flags, 747 void (*iterator)(void *data, u8 *mac, 748 struct ieee80211_vif *vif), 749 void *data) 750 { 751 struct ieee80211_sub_if_data *sdata; 752 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; 753 754 list_for_each_entry_rcu(sdata, &local->interfaces, list, 755 lockdep_is_held(&local->iflist_mtx) || 756 lockdep_is_held(&local->hw.wiphy->mtx)) { 757 switch (sdata->vif.type) { 758 case NL80211_IFTYPE_MONITOR: 759 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) && 760 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 761 continue; 762 break; 763 case NL80211_IFTYPE_AP_VLAN: 764 continue; 765 default: 766 break; 767 } 768 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && 769 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 770 continue; 771 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) && 772 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 773 continue; 774 if (ieee80211_sdata_running(sdata) || !active_only) 775 iterator(data, sdata->vif.addr, 776 &sdata->vif); 777 } 778 779 sdata = rcu_dereference_check(local->monitor_sdata, 780 lockdep_is_held(&local->iflist_mtx) || 781 lockdep_is_held(&local->hw.wiphy->mtx)); 782 if (sdata && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) && 783 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || 784 sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 785 iterator(data, sdata->vif.addr, &sdata->vif); 786 } 787 788 void ieee80211_iterate_interfaces( 789 struct ieee80211_hw *hw, u32 iter_flags, 790 void (*iterator)(void *data, u8 *mac, 791 struct ieee80211_vif *vif), 792 void *data) 793 { 794 struct ieee80211_local *local = hw_to_local(hw); 795 796 mutex_lock(&local->iflist_mtx); 797 __iterate_interfaces(local, iter_flags, iterator, data); 798 mutex_unlock(&local->iflist_mtx); 799 } 800 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces); 801 802 void ieee80211_iterate_active_interfaces_atomic( 803 struct ieee80211_hw *hw, u32 iter_flags, 804 void (*iterator)(void *data, u8 *mac, 805 struct ieee80211_vif *vif), 806 void *data) 807 { 808 struct ieee80211_local *local = hw_to_local(hw); 809 810 rcu_read_lock(); 811 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 812 iterator, data); 813 rcu_read_unlock(); 814 } 815 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); 816 817 void ieee80211_iterate_active_interfaces_mtx( 818 struct ieee80211_hw *hw, u32 iter_flags, 819 void (*iterator)(void *data, u8 *mac, 820 struct ieee80211_vif *vif), 821 void *data) 822 { 823 struct ieee80211_local *local = hw_to_local(hw); 824 825 lockdep_assert_wiphy(hw->wiphy); 826 827 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 828 iterator, data); 829 } 830 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx); 831 832 static void __iterate_stations(struct ieee80211_local *local, 833 void (*iterator)(void *data, 834 struct ieee80211_sta *sta), 835 void *data) 836 { 837 struct sta_info *sta; 838 839 list_for_each_entry_rcu(sta, &local->sta_list, list, 840 lockdep_is_held(&local->hw.wiphy->mtx)) { 841 if (!sta->uploaded) 842 continue; 843 844 iterator(data, &sta->sta); 845 } 846 } 847 848 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, 849 void (*iterator)(void *data, 850 struct ieee80211_sta *sta), 851 void *data) 852 { 853 struct ieee80211_local *local = hw_to_local(hw); 854 855 rcu_read_lock(); 856 __iterate_stations(local, iterator, data); 857 rcu_read_unlock(); 858 } 859 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic); 860 861 void ieee80211_iterate_stations_mtx(struct ieee80211_hw *hw, 862 void (*iterator)(void *data, 863 struct ieee80211_sta *sta), 864 void *data) 865 { 866 struct ieee80211_local *local = hw_to_local(hw); 867 868 lockdep_assert_wiphy(local->hw.wiphy); 869 870 __iterate_stations(local, iterator, data); 871 } 872 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_mtx); 873 874 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) 875 { 876 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 877 878 if (!ieee80211_sdata_running(sdata) || 879 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 880 return NULL; 881 return &sdata->vif; 882 } 883 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); 884 885 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif) 886 { 887 if (!vif) 888 return NULL; 889 890 return &vif_to_sdata(vif)->wdev; 891 } 892 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev); 893 894 /* 895 * Nothing should have been stuffed into the workqueue during 896 * the suspend->resume cycle. Since we can't check each caller 897 * of this function if we are already quiescing / suspended, 898 * check here and don't WARN since this can actually happen when 899 * the rx path (for example) is racing against __ieee80211_suspend 900 * and suspending / quiescing was set after the rx path checked 901 * them. 902 */ 903 static bool ieee80211_can_queue_work(struct ieee80211_local *local) 904 { 905 if (local->quiescing || (local->suspended && !local->resuming)) { 906 pr_warn("queueing ieee80211 work while going to suspend\n"); 907 return false; 908 } 909 910 return true; 911 } 912 913 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) 914 { 915 struct ieee80211_local *local = hw_to_local(hw); 916 917 if (!ieee80211_can_queue_work(local)) 918 return; 919 920 queue_work(local->workqueue, work); 921 } 922 EXPORT_SYMBOL(ieee80211_queue_work); 923 924 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, 925 struct delayed_work *dwork, 926 unsigned long delay) 927 { 928 struct ieee80211_local *local = hw_to_local(hw); 929 930 if (!ieee80211_can_queue_work(local)) 931 return; 932 933 queue_delayed_work(local->workqueue, dwork, delay); 934 } 935 EXPORT_SYMBOL(ieee80211_queue_delayed_work); 936 937 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 938 struct ieee80211_tx_queue_params 939 *qparam, int ac) 940 { 941 struct ieee80211_chanctx_conf *chanctx_conf; 942 const struct ieee80211_reg_rule *rrule; 943 const struct ieee80211_wmm_ac *wmm_ac; 944 u16 center_freq = 0; 945 946 if (sdata->vif.type != NL80211_IFTYPE_AP && 947 sdata->vif.type != NL80211_IFTYPE_STATION) 948 return; 949 950 rcu_read_lock(); 951 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 952 if (chanctx_conf) 953 center_freq = chanctx_conf->def.chan->center_freq; 954 955 if (!center_freq) { 956 rcu_read_unlock(); 957 return; 958 } 959 960 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq)); 961 962 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) { 963 rcu_read_unlock(); 964 return; 965 } 966 967 if (sdata->vif.type == NL80211_IFTYPE_AP) 968 wmm_ac = &rrule->wmm_rule.ap[ac]; 969 else 970 wmm_ac = &rrule->wmm_rule.client[ac]; 971 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min); 972 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max); 973 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn); 974 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32); 975 rcu_read_unlock(); 976 } 977 978 void ieee80211_set_wmm_default(struct ieee80211_link_data *link, 979 bool bss_notify, bool enable_qos) 980 { 981 struct ieee80211_sub_if_data *sdata = link->sdata; 982 struct ieee80211_local *local = sdata->local; 983 struct ieee80211_tx_queue_params qparam; 984 struct ieee80211_chanctx_conf *chanctx_conf; 985 int ac; 986 bool use_11b; 987 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ 988 int aCWmin, aCWmax; 989 990 if (!local->ops->conf_tx) 991 return; 992 993 if (local->hw.queues < IEEE80211_NUM_ACS) 994 return; 995 996 memset(&qparam, 0, sizeof(qparam)); 997 998 rcu_read_lock(); 999 chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 1000 use_11b = (chanctx_conf && 1001 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) && 1002 !link->operating_11g_mode; 1003 rcu_read_unlock(); 1004 1005 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); 1006 1007 /* Set defaults according to 802.11-2007 Table 7-37 */ 1008 aCWmax = 1023; 1009 if (use_11b) 1010 aCWmin = 31; 1011 else 1012 aCWmin = 15; 1013 1014 /* Configure old 802.11b/g medium access rules. */ 1015 qparam.cw_max = aCWmax; 1016 qparam.cw_min = aCWmin; 1017 qparam.txop = 0; 1018 qparam.aifs = 2; 1019 1020 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 1021 /* Update if QoS is enabled. */ 1022 if (enable_qos) { 1023 switch (ac) { 1024 case IEEE80211_AC_BK: 1025 qparam.cw_max = aCWmax; 1026 qparam.cw_min = aCWmin; 1027 qparam.txop = 0; 1028 if (is_ocb) 1029 qparam.aifs = 9; 1030 else 1031 qparam.aifs = 7; 1032 break; 1033 /* never happens but let's not leave undefined */ 1034 default: 1035 case IEEE80211_AC_BE: 1036 qparam.cw_max = aCWmax; 1037 qparam.cw_min = aCWmin; 1038 qparam.txop = 0; 1039 if (is_ocb) 1040 qparam.aifs = 6; 1041 else 1042 qparam.aifs = 3; 1043 break; 1044 case IEEE80211_AC_VI: 1045 qparam.cw_max = aCWmin; 1046 qparam.cw_min = (aCWmin + 1) / 2 - 1; 1047 if (is_ocb) 1048 qparam.txop = 0; 1049 else if (use_11b) 1050 qparam.txop = 6016/32; 1051 else 1052 qparam.txop = 3008/32; 1053 1054 if (is_ocb) 1055 qparam.aifs = 3; 1056 else 1057 qparam.aifs = 2; 1058 break; 1059 case IEEE80211_AC_VO: 1060 qparam.cw_max = (aCWmin + 1) / 2 - 1; 1061 qparam.cw_min = (aCWmin + 1) / 4 - 1; 1062 if (is_ocb) 1063 qparam.txop = 0; 1064 else if (use_11b) 1065 qparam.txop = 3264/32; 1066 else 1067 qparam.txop = 1504/32; 1068 qparam.aifs = 2; 1069 break; 1070 } 1071 } 1072 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac); 1073 1074 qparam.uapsd = false; 1075 1076 link->tx_conf[ac] = qparam; 1077 drv_conf_tx(local, link, ac, &qparam); 1078 } 1079 1080 if (sdata->vif.type != NL80211_IFTYPE_MONITOR && 1081 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 1082 sdata->vif.type != NL80211_IFTYPE_NAN) { 1083 link->conf->qos = enable_qos; 1084 if (bss_notify) 1085 ieee80211_link_info_change_notify(sdata, link, 1086 BSS_CHANGED_QOS); 1087 } 1088 } 1089 1090 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1091 u16 transaction, u16 auth_alg, u16 status, 1092 const u8 *extra, size_t extra_len, const u8 *da, 1093 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, 1094 u32 tx_flags) 1095 { 1096 struct ieee80211_local *local = sdata->local; 1097 struct sk_buff *skb; 1098 struct ieee80211_mgmt *mgmt; 1099 bool multi_link = ieee80211_vif_is_mld(&sdata->vif); 1100 struct { 1101 u8 id; 1102 u8 len; 1103 u8 ext_id; 1104 struct ieee80211_multi_link_elem ml; 1105 struct ieee80211_mle_basic_common_info basic; 1106 } __packed mle = { 1107 .id = WLAN_EID_EXTENSION, 1108 .len = sizeof(mle) - 2, 1109 .ext_id = WLAN_EID_EXT_EHT_MULTI_LINK, 1110 .ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC), 1111 .basic.len = sizeof(mle.basic), 1112 }; 1113 int err; 1114 1115 memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN); 1116 1117 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ 1118 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + 1119 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN + 1120 multi_link * sizeof(mle)); 1121 if (!skb) 1122 return; 1123 1124 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); 1125 1126 mgmt = skb_put_zero(skb, 24 + 6); 1127 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 1128 IEEE80211_STYPE_AUTH); 1129 memcpy(mgmt->da, da, ETH_ALEN); 1130 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 1131 memcpy(mgmt->bssid, bssid, ETH_ALEN); 1132 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); 1133 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); 1134 mgmt->u.auth.status_code = cpu_to_le16(status); 1135 if (extra) 1136 skb_put_data(skb, extra, extra_len); 1137 if (multi_link) 1138 skb_put_data(skb, &mle, sizeof(mle)); 1139 1140 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { 1141 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 1142 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); 1143 if (WARN_ON(err)) { 1144 kfree_skb(skb); 1145 return; 1146 } 1147 } 1148 1149 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | 1150 tx_flags; 1151 ieee80211_tx_skb(sdata, skb); 1152 } 1153 1154 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1155 const u8 *da, const u8 *bssid, 1156 u16 stype, u16 reason, 1157 bool send_frame, u8 *frame_buf) 1158 { 1159 struct ieee80211_local *local = sdata->local; 1160 struct sk_buff *skb; 1161 struct ieee80211_mgmt *mgmt = (void *)frame_buf; 1162 1163 /* build frame */ 1164 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); 1165 mgmt->duration = 0; /* initialize only */ 1166 mgmt->seq_ctrl = 0; /* initialize only */ 1167 memcpy(mgmt->da, da, ETH_ALEN); 1168 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 1169 memcpy(mgmt->bssid, bssid, ETH_ALEN); 1170 /* u.deauth.reason_code == u.disassoc.reason_code */ 1171 mgmt->u.deauth.reason_code = cpu_to_le16(reason); 1172 1173 if (send_frame) { 1174 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 1175 IEEE80211_DEAUTH_FRAME_LEN); 1176 if (!skb) 1177 return; 1178 1179 skb_reserve(skb, local->hw.extra_tx_headroom); 1180 1181 /* copy in frame */ 1182 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN); 1183 1184 if (sdata->vif.type != NL80211_IFTYPE_STATION || 1185 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) 1186 IEEE80211_SKB_CB(skb)->flags |= 1187 IEEE80211_TX_INTFL_DONT_ENCRYPT; 1188 1189 ieee80211_tx_skb(sdata, skb); 1190 } 1191 } 1192 1193 static int ieee80211_put_s1g_cap(struct sk_buff *skb, 1194 struct ieee80211_sta_s1g_cap *s1g_cap) 1195 { 1196 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_s1g_cap)) 1197 return -ENOBUFS; 1198 1199 skb_put_u8(skb, WLAN_EID_S1G_CAPABILITIES); 1200 skb_put_u8(skb, sizeof(struct ieee80211_s1g_cap)); 1201 1202 skb_put_data(skb, &s1g_cap->cap, sizeof(s1g_cap->cap)); 1203 skb_put_data(skb, &s1g_cap->nss_mcs, sizeof(s1g_cap->nss_mcs)); 1204 1205 return 0; 1206 } 1207 1208 static int ieee80211_put_preq_ies_band(struct sk_buff *skb, 1209 struct ieee80211_sub_if_data *sdata, 1210 const u8 *ie, size_t ie_len, 1211 size_t *offset, 1212 enum nl80211_band band, 1213 u32 rate_mask, 1214 struct cfg80211_chan_def *chandef, 1215 u32 flags) 1216 { 1217 struct ieee80211_local *local = sdata->local; 1218 struct ieee80211_supported_band *sband; 1219 int i, err; 1220 size_t noffset; 1221 u32 rate_flags; 1222 bool have_80mhz = false; 1223 1224 *offset = 0; 1225 1226 sband = local->hw.wiphy->bands[band]; 1227 if (WARN_ON_ONCE(!sband)) 1228 return 0; 1229 1230 rate_flags = ieee80211_chandef_rate_flags(chandef); 1231 1232 /* For direct scan add S1G IE and consider its override bits */ 1233 if (band == NL80211_BAND_S1GHZ) 1234 return ieee80211_put_s1g_cap(skb, &sband->s1g_cap); 1235 1236 err = ieee80211_put_srates_elem(skb, sband, 0, rate_flags, 1237 ~rate_mask, WLAN_EID_SUPP_RATES); 1238 if (err) 1239 return err; 1240 1241 /* insert "request information" if in custom IEs */ 1242 if (ie && ie_len) { 1243 static const u8 before_extrates[] = { 1244 WLAN_EID_SSID, 1245 WLAN_EID_SUPP_RATES, 1246 WLAN_EID_REQUEST, 1247 }; 1248 noffset = ieee80211_ie_split(ie, ie_len, 1249 before_extrates, 1250 ARRAY_SIZE(before_extrates), 1251 *offset); 1252 if (skb_tailroom(skb) < noffset - *offset) 1253 return -ENOBUFS; 1254 skb_put_data(skb, ie + *offset, noffset - *offset); 1255 *offset = noffset; 1256 } 1257 1258 err = ieee80211_put_srates_elem(skb, sband, 0, rate_flags, 1259 ~rate_mask, WLAN_EID_EXT_SUPP_RATES); 1260 if (err) 1261 return err; 1262 1263 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) { 1264 if (skb_tailroom(skb) < 3) 1265 return -ENOBUFS; 1266 skb_put_u8(skb, WLAN_EID_DS_PARAMS); 1267 skb_put_u8(skb, 1); 1268 skb_put_u8(skb, 1269 ieee80211_frequency_to_channel(chandef->chan->center_freq)); 1270 } 1271 1272 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT) 1273 return 0; 1274 1275 /* insert custom IEs that go before HT */ 1276 if (ie && ie_len) { 1277 static const u8 before_ht[] = { 1278 /* 1279 * no need to list the ones split off already 1280 * (or generated here) 1281 */ 1282 WLAN_EID_DS_PARAMS, 1283 WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 1284 }; 1285 noffset = ieee80211_ie_split(ie, ie_len, 1286 before_ht, ARRAY_SIZE(before_ht), 1287 *offset); 1288 if (skb_tailroom(skb) < noffset - *offset) 1289 return -ENOBUFS; 1290 skb_put_data(skb, ie + *offset, noffset - *offset); 1291 *offset = noffset; 1292 } 1293 1294 if (sband->ht_cap.ht_supported) { 1295 u8 *pos; 1296 1297 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap)) 1298 return -ENOBUFS; 1299 1300 pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_cap)); 1301 ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, 1302 sband->ht_cap.cap); 1303 } 1304 1305 /* insert custom IEs that go before VHT */ 1306 if (ie && ie_len) { 1307 static const u8 before_vht[] = { 1308 /* 1309 * no need to list the ones split off already 1310 * (or generated here) 1311 */ 1312 WLAN_EID_BSS_COEX_2040, 1313 WLAN_EID_EXT_CAPABILITY, 1314 WLAN_EID_SSID_LIST, 1315 WLAN_EID_CHANNEL_USAGE, 1316 WLAN_EID_INTERWORKING, 1317 WLAN_EID_MESH_ID, 1318 /* 60 GHz (Multi-band, DMG, MMS) can't happen */ 1319 }; 1320 noffset = ieee80211_ie_split(ie, ie_len, 1321 before_vht, ARRAY_SIZE(before_vht), 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 /* Check if any channel in this sband supports at least 80 MHz */ 1330 for (i = 0; i < sband->n_channels; i++) { 1331 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | 1332 IEEE80211_CHAN_NO_80MHZ)) 1333 continue; 1334 1335 have_80mhz = true; 1336 break; 1337 } 1338 1339 if (sband->vht_cap.vht_supported && have_80mhz) { 1340 u8 *pos; 1341 1342 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_vht_cap)) 1343 return -ENOBUFS; 1344 1345 pos = skb_put(skb, 2 + sizeof(struct ieee80211_vht_cap)); 1346 ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, 1347 sband->vht_cap.cap); 1348 } 1349 1350 /* insert custom IEs that go before HE */ 1351 if (ie && ie_len) { 1352 static const u8 before_he[] = { 1353 /* 1354 * no need to list the ones split off before VHT 1355 * or generated here 1356 */ 1357 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS, 1358 WLAN_EID_AP_CSN, 1359 /* TODO: add 11ah/11aj/11ak elements */ 1360 }; 1361 noffset = ieee80211_ie_split(ie, ie_len, 1362 before_he, ARRAY_SIZE(before_he), 1363 *offset); 1364 if (skb_tailroom(skb) < noffset - *offset) 1365 return -ENOBUFS; 1366 skb_put_data(skb, ie + *offset, noffset - *offset); 1367 *offset = noffset; 1368 } 1369 1370 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 1371 IEEE80211_CHAN_NO_HE)) { 1372 err = ieee80211_put_he_cap(skb, sdata, sband, NULL); 1373 if (err) 1374 return err; 1375 } 1376 1377 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 1378 IEEE80211_CHAN_NO_HE | 1379 IEEE80211_CHAN_NO_EHT)) { 1380 err = ieee80211_put_eht_cap(skb, sdata, sband, NULL); 1381 if (err) 1382 return err; 1383 } 1384 1385 err = ieee80211_put_he_6ghz_cap(skb, sdata, IEEE80211_SMPS_OFF); 1386 if (err) 1387 return err; 1388 1389 /* 1390 * If adding more here, adjust code in main.c 1391 * that calculates local->scan_ies_len. 1392 */ 1393 1394 return 0; 1395 } 1396 1397 static int ieee80211_put_preq_ies(struct sk_buff *skb, 1398 struct ieee80211_sub_if_data *sdata, 1399 struct ieee80211_scan_ies *ie_desc, 1400 const u8 *ie, size_t ie_len, 1401 u8 bands_used, u32 *rate_masks, 1402 struct cfg80211_chan_def *chandef, 1403 u32 flags) 1404 { 1405 size_t custom_ie_offset = 0; 1406 int i, err; 1407 1408 memset(ie_desc, 0, sizeof(*ie_desc)); 1409 1410 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1411 if (bands_used & BIT(i)) { 1412 ie_desc->ies[i] = skb_tail_pointer(skb); 1413 err = ieee80211_put_preq_ies_band(skb, sdata, 1414 ie, ie_len, 1415 &custom_ie_offset, 1416 i, rate_masks[i], 1417 chandef, flags); 1418 if (err) 1419 return err; 1420 ie_desc->len[i] = skb_tail_pointer(skb) - 1421 ie_desc->ies[i]; 1422 } 1423 } 1424 1425 /* add any remaining custom IEs */ 1426 if (ie && ie_len) { 1427 if (WARN_ONCE(skb_tailroom(skb) < ie_len - custom_ie_offset, 1428 "not enough space for preq custom IEs\n")) 1429 return -ENOBUFS; 1430 ie_desc->common_ies = skb_tail_pointer(skb); 1431 skb_put_data(skb, ie + custom_ie_offset, 1432 ie_len - custom_ie_offset); 1433 ie_desc->common_ie_len = skb_tail_pointer(skb) - 1434 ie_desc->common_ies; 1435 } 1436 1437 return 0; 1438 }; 1439 1440 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 1441 size_t buffer_len, 1442 struct ieee80211_scan_ies *ie_desc, 1443 const u8 *ie, size_t ie_len, 1444 u8 bands_used, u32 *rate_masks, 1445 struct cfg80211_chan_def *chandef, 1446 u32 flags) 1447 { 1448 struct sk_buff *skb = alloc_skb(buffer_len, GFP_KERNEL); 1449 uintptr_t offs; 1450 int ret, i; 1451 u8 *start; 1452 1453 if (!skb) 1454 return -ENOMEM; 1455 1456 start = skb_tail_pointer(skb); 1457 memset(start, 0, skb_tailroom(skb)); 1458 ret = ieee80211_put_preq_ies(skb, sdata, ie_desc, ie, ie_len, 1459 bands_used, rate_masks, chandef, 1460 flags); 1461 if (ret < 0) { 1462 goto out; 1463 } 1464 1465 if (skb->len > buffer_len) { 1466 ret = -ENOBUFS; 1467 goto out; 1468 } 1469 1470 memcpy(buffer, start, skb->len); 1471 1472 /* adjust ie_desc for copy */ 1473 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1474 offs = ie_desc->ies[i] - start; 1475 ie_desc->ies[i] = buffer + offs; 1476 } 1477 offs = ie_desc->common_ies - start; 1478 ie_desc->common_ies = buffer + offs; 1479 1480 ret = skb->len; 1481 out: 1482 consume_skb(skb); 1483 return ret; 1484 } 1485 1486 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1487 const u8 *src, const u8 *dst, 1488 u32 ratemask, 1489 struct ieee80211_channel *chan, 1490 const u8 *ssid, size_t ssid_len, 1491 const u8 *ie, size_t ie_len, 1492 u32 flags) 1493 { 1494 struct ieee80211_local *local = sdata->local; 1495 struct cfg80211_chan_def chandef; 1496 struct sk_buff *skb; 1497 struct ieee80211_mgmt *mgmt; 1498 u32 rate_masks[NUM_NL80211_BANDS] = {}; 1499 struct ieee80211_scan_ies dummy_ie_desc; 1500 1501 /* 1502 * Do not send DS Channel parameter for directed probe requests 1503 * in order to maximize the chance that we get a response. Some 1504 * badly-behaved APs don't respond when this parameter is included. 1505 */ 1506 chandef.width = sdata->vif.bss_conf.chanreq.oper.width; 1507 if (flags & IEEE80211_PROBE_FLAG_DIRECTED) 1508 chandef.chan = NULL; 1509 else 1510 chandef.chan = chan; 1511 1512 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len, 1513 local->scan_ies_len + ie_len); 1514 if (!skb) 1515 return NULL; 1516 1517 rate_masks[chan->band] = ratemask; 1518 ieee80211_put_preq_ies(skb, sdata, &dummy_ie_desc, 1519 ie, ie_len, BIT(chan->band), 1520 rate_masks, &chandef, flags); 1521 1522 if (dst) { 1523 mgmt = (struct ieee80211_mgmt *) skb->data; 1524 memcpy(mgmt->da, dst, ETH_ALEN); 1525 memcpy(mgmt->bssid, dst, ETH_ALEN); 1526 } 1527 1528 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 1529 1530 return skb; 1531 } 1532 1533 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1534 struct ieee802_11_elems *elems, 1535 enum nl80211_band band, u32 *basic_rates) 1536 { 1537 struct ieee80211_supported_band *sband; 1538 size_t num_rates; 1539 u32 supp_rates, rate_flags; 1540 int i, j; 1541 1542 sband = sdata->local->hw.wiphy->bands[band]; 1543 if (WARN_ON(!sband)) 1544 return 1; 1545 1546 rate_flags = 1547 ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chanreq.oper); 1548 1549 num_rates = sband->n_bitrates; 1550 supp_rates = 0; 1551 for (i = 0; i < elems->supp_rates_len + 1552 elems->ext_supp_rates_len; i++) { 1553 u8 rate = 0; 1554 int own_rate; 1555 bool is_basic; 1556 if (i < elems->supp_rates_len) 1557 rate = elems->supp_rates[i]; 1558 else if (elems->ext_supp_rates) 1559 rate = elems->ext_supp_rates 1560 [i - elems->supp_rates_len]; 1561 own_rate = 5 * (rate & 0x7f); 1562 is_basic = !!(rate & 0x80); 1563 1564 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 1565 continue; 1566 1567 for (j = 0; j < num_rates; j++) { 1568 int brate; 1569 if ((rate_flags & sband->bitrates[j].flags) 1570 != rate_flags) 1571 continue; 1572 1573 brate = sband->bitrates[j].bitrate; 1574 1575 if (brate == own_rate) { 1576 supp_rates |= BIT(j); 1577 if (basic_rates && is_basic) 1578 *basic_rates |= BIT(j); 1579 } 1580 } 1581 } 1582 return supp_rates; 1583 } 1584 1585 void ieee80211_stop_device(struct ieee80211_local *local, bool suspend) 1586 { 1587 local_bh_disable(); 1588 ieee80211_handle_queued_frames(local); 1589 local_bh_enable(); 1590 1591 ieee80211_led_radio(local, false); 1592 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); 1593 1594 wiphy_work_cancel(local->hw.wiphy, &local->reconfig_filter); 1595 1596 flush_workqueue(local->workqueue); 1597 wiphy_work_flush(local->hw.wiphy, NULL); 1598 drv_stop(local, suspend); 1599 } 1600 1601 static void ieee80211_flush_completed_scan(struct ieee80211_local *local, 1602 bool aborted) 1603 { 1604 /* It's possible that we don't handle the scan completion in 1605 * time during suspend, so if it's still marked as completed 1606 * here, queue the work and flush it to clean things up. 1607 * Instead of calling the worker function directly here, we 1608 * really queue it to avoid potential races with other flows 1609 * scheduling the same work. 1610 */ 1611 if (test_bit(SCAN_COMPLETED, &local->scanning)) { 1612 /* If coming from reconfiguration failure, abort the scan so 1613 * we don't attempt to continue a partial HW scan - which is 1614 * possible otherwise if (e.g.) the 2.4 GHz portion was the 1615 * completed scan, and a 5 GHz portion is still pending. 1616 */ 1617 if (aborted) 1618 set_bit(SCAN_ABORTED, &local->scanning); 1619 wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work, 0); 1620 wiphy_delayed_work_flush(local->hw.wiphy, &local->scan_work); 1621 } 1622 } 1623 1624 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) 1625 { 1626 struct ieee80211_sub_if_data *sdata; 1627 struct ieee80211_chanctx *ctx; 1628 1629 lockdep_assert_wiphy(local->hw.wiphy); 1630 1631 /* 1632 * We get here if during resume the device can't be restarted properly. 1633 * We might also get here if this happens during HW reset, which is a 1634 * slightly different situation and we need to drop all connections in 1635 * the latter case. 1636 * 1637 * Ask cfg80211 to turn off all interfaces, this will result in more 1638 * warnings but at least we'll then get into a clean stopped state. 1639 */ 1640 1641 local->resuming = false; 1642 local->suspended = false; 1643 local->in_reconfig = false; 1644 local->reconfig_failure = true; 1645 1646 ieee80211_flush_completed_scan(local, true); 1647 1648 /* scheduled scan clearly can't be running any more, but tell 1649 * cfg80211 and clear local state 1650 */ 1651 ieee80211_sched_scan_end(local); 1652 1653 list_for_each_entry(sdata, &local->interfaces, list) 1654 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; 1655 1656 /* Mark channel contexts as not being in the driver any more to avoid 1657 * removing them from the driver during the shutdown process... 1658 */ 1659 list_for_each_entry(ctx, &local->chanctx_list, list) 1660 ctx->driver_present = false; 1661 } 1662 1663 static void ieee80211_assign_chanctx(struct ieee80211_local *local, 1664 struct ieee80211_sub_if_data *sdata, 1665 struct ieee80211_link_data *link) 1666 { 1667 struct ieee80211_chanctx_conf *conf; 1668 struct ieee80211_chanctx *ctx; 1669 1670 lockdep_assert_wiphy(local->hw.wiphy); 1671 1672 conf = rcu_dereference_protected(link->conf->chanctx_conf, 1673 lockdep_is_held(&local->hw.wiphy->mtx)); 1674 if (conf) { 1675 ctx = container_of(conf, struct ieee80211_chanctx, conf); 1676 drv_assign_vif_chanctx(local, sdata, link->conf, ctx); 1677 } 1678 } 1679 1680 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata) 1681 { 1682 struct ieee80211_local *local = sdata->local; 1683 struct sta_info *sta; 1684 1685 lockdep_assert_wiphy(local->hw.wiphy); 1686 1687 /* add STAs back */ 1688 list_for_each_entry(sta, &local->sta_list, list) { 1689 enum ieee80211_sta_state state; 1690 1691 if (!sta->uploaded || sta->sdata != sdata) 1692 continue; 1693 1694 for (state = IEEE80211_STA_NOTEXIST; 1695 state < sta->sta_state; state++) 1696 WARN_ON(drv_sta_state(local, sta->sdata, sta, state, 1697 state + 1)); 1698 } 1699 } 1700 1701 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata) 1702 { 1703 struct cfg80211_nan_func *func, **funcs; 1704 int res, id, i = 0; 1705 1706 res = drv_start_nan(sdata->local, sdata, 1707 &sdata->u.nan.conf); 1708 if (WARN_ON(res)) 1709 return res; 1710 1711 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1, 1712 sizeof(*funcs), 1713 GFP_KERNEL); 1714 if (!funcs) 1715 return -ENOMEM; 1716 1717 /* Add all the functions: 1718 * This is a little bit ugly. We need to call a potentially sleeping 1719 * callback for each NAN function, so we can't hold the spinlock. 1720 */ 1721 spin_lock_bh(&sdata->u.nan.func_lock); 1722 1723 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) 1724 funcs[i++] = func; 1725 1726 spin_unlock_bh(&sdata->u.nan.func_lock); 1727 1728 for (i = 0; funcs[i]; i++) { 1729 res = drv_add_nan_func(sdata->local, sdata, funcs[i]); 1730 if (WARN_ON(res)) 1731 ieee80211_nan_func_terminated(&sdata->vif, 1732 funcs[i]->instance_id, 1733 NL80211_NAN_FUNC_TERM_REASON_ERROR, 1734 GFP_KERNEL); 1735 } 1736 1737 kfree(funcs); 1738 1739 return 0; 1740 } 1741 1742 static void ieee80211_reconfig_ap_links(struct ieee80211_local *local, 1743 struct ieee80211_sub_if_data *sdata, 1744 u64 changed) 1745 { 1746 int link_id; 1747 1748 for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { 1749 struct ieee80211_link_data *link; 1750 1751 if (!(sdata->vif.active_links & BIT(link_id))) 1752 continue; 1753 1754 link = sdata_dereference(sdata->link[link_id], sdata); 1755 if (!link) 1756 continue; 1757 1758 if (rcu_access_pointer(link->u.ap.beacon)) 1759 drv_start_ap(local, sdata, link->conf); 1760 1761 if (!link->conf->enable_beacon) 1762 continue; 1763 1764 changed |= BSS_CHANGED_BEACON | 1765 BSS_CHANGED_BEACON_ENABLED; 1766 1767 ieee80211_link_info_change_notify(sdata, link, changed); 1768 } 1769 } 1770 1771 int ieee80211_reconfig(struct ieee80211_local *local) 1772 { 1773 struct ieee80211_hw *hw = &local->hw; 1774 struct ieee80211_sub_if_data *sdata; 1775 struct ieee80211_chanctx *ctx; 1776 struct sta_info *sta; 1777 int res, i; 1778 bool reconfig_due_to_wowlan = false; 1779 struct ieee80211_sub_if_data *sched_scan_sdata; 1780 struct cfg80211_sched_scan_request *sched_scan_req; 1781 bool sched_scan_stopped = false; 1782 bool suspended = local->suspended; 1783 bool in_reconfig = false; 1784 1785 lockdep_assert_wiphy(local->hw.wiphy); 1786 1787 /* nothing to do if HW shouldn't run */ 1788 if (!local->open_count) 1789 goto wake_up; 1790 1791 #ifdef CONFIG_PM 1792 if (suspended) 1793 local->resuming = true; 1794 1795 if (local->wowlan) { 1796 /* 1797 * In the wowlan case, both mac80211 and the device 1798 * are functional when the resume op is called, so 1799 * clear local->suspended so the device could operate 1800 * normally (e.g. pass rx frames). 1801 */ 1802 local->suspended = false; 1803 res = drv_resume(local); 1804 local->wowlan = false; 1805 if (res < 0) { 1806 local->resuming = false; 1807 return res; 1808 } 1809 if (res == 0) 1810 goto wake_up; 1811 WARN_ON(res > 1); 1812 /* 1813 * res is 1, which means the driver requested 1814 * to go through a regular reset on wakeup. 1815 * restore local->suspended in this case. 1816 */ 1817 reconfig_due_to_wowlan = true; 1818 local->suspended = true; 1819 } 1820 #endif 1821 1822 /* 1823 * In case of hw_restart during suspend (without wowlan), 1824 * cancel restart work, as we are reconfiguring the device 1825 * anyway. 1826 * Note that restart_work is scheduled on a frozen workqueue, 1827 * so we can't deadlock in this case. 1828 */ 1829 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan) 1830 cancel_work_sync(&local->restart_work); 1831 1832 local->started = false; 1833 1834 /* 1835 * Upon resume hardware can sometimes be goofy due to 1836 * various platform / driver / bus issues, so restarting 1837 * the device may at times not work immediately. Propagate 1838 * the error. 1839 */ 1840 res = drv_start(local); 1841 if (res) { 1842 if (suspended) 1843 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); 1844 else 1845 WARN(1, "Hardware became unavailable during restart.\n"); 1846 ieee80211_handle_reconfig_failure(local); 1847 return res; 1848 } 1849 1850 /* setup fragmentation threshold */ 1851 drv_set_frag_threshold(local, hw->wiphy->frag_threshold); 1852 1853 /* setup RTS threshold */ 1854 drv_set_rts_threshold(local, hw->wiphy->rts_threshold); 1855 1856 /* reset coverage class */ 1857 drv_set_coverage_class(local, hw->wiphy->coverage_class); 1858 1859 ieee80211_led_radio(local, true); 1860 ieee80211_mod_tpt_led_trig(local, 1861 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); 1862 1863 /* add interfaces */ 1864 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); 1865 if (sdata && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) { 1866 /* in HW restart it exists already */ 1867 WARN_ON(local->resuming); 1868 res = drv_add_interface(local, sdata); 1869 if (WARN_ON(res)) { 1870 RCU_INIT_POINTER(local->monitor_sdata, NULL); 1871 synchronize_net(); 1872 kfree(sdata); 1873 } 1874 } 1875 1876 list_for_each_entry(sdata, &local->interfaces, list) { 1877 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && 1878 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 1879 continue; 1880 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1881 ieee80211_sdata_running(sdata)) { 1882 res = drv_add_interface(local, sdata); 1883 if (WARN_ON(res)) 1884 break; 1885 } 1886 } 1887 1888 /* If adding any of the interfaces failed above, roll back and 1889 * report failure. 1890 */ 1891 if (res) { 1892 list_for_each_entry_continue_reverse(sdata, &local->interfaces, 1893 list) { 1894 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && 1895 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) 1896 continue; 1897 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1898 ieee80211_sdata_running(sdata)) 1899 drv_remove_interface(local, sdata); 1900 } 1901 ieee80211_handle_reconfig_failure(local); 1902 return res; 1903 } 1904 1905 /* add channel contexts */ 1906 list_for_each_entry(ctx, &local->chanctx_list, list) 1907 if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER) 1908 WARN_ON(drv_add_chanctx(local, ctx)); 1909 1910 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); 1911 if (sdata && ieee80211_sdata_running(sdata)) 1912 ieee80211_assign_chanctx(local, sdata, &sdata->deflink); 1913 1914 /* reconfigure hardware */ 1915 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_LISTEN_INTERVAL | 1916 IEEE80211_CONF_CHANGE_MONITOR | 1917 IEEE80211_CONF_CHANGE_PS | 1918 IEEE80211_CONF_CHANGE_RETRY_LIMITS | 1919 IEEE80211_CONF_CHANGE_IDLE); 1920 1921 ieee80211_configure_filter(local); 1922 1923 /* Finally also reconfigure all the BSS information */ 1924 list_for_each_entry(sdata, &local->interfaces, list) { 1925 /* common change flags for all interface types - link only */ 1926 u64 changed = BSS_CHANGED_ERP_CTS_PROT | 1927 BSS_CHANGED_ERP_PREAMBLE | 1928 BSS_CHANGED_ERP_SLOT | 1929 BSS_CHANGED_HT | 1930 BSS_CHANGED_BASIC_RATES | 1931 BSS_CHANGED_BEACON_INT | 1932 BSS_CHANGED_BSSID | 1933 BSS_CHANGED_CQM | 1934 BSS_CHANGED_QOS | 1935 BSS_CHANGED_TXPOWER | 1936 BSS_CHANGED_MCAST_RATE; 1937 struct ieee80211_link_data *link = NULL; 1938 unsigned int link_id; 1939 u32 active_links = 0; 1940 1941 if (!ieee80211_sdata_running(sdata)) 1942 continue; 1943 1944 if (ieee80211_vif_is_mld(&sdata->vif)) { 1945 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS] = { 1946 [0] = &sdata->vif.bss_conf, 1947 }; 1948 1949 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 1950 /* start with a single active link */ 1951 active_links = sdata->vif.active_links; 1952 link_id = ffs(active_links) - 1; 1953 sdata->vif.active_links = BIT(link_id); 1954 } 1955 1956 drv_change_vif_links(local, sdata, 0, 1957 sdata->vif.active_links, 1958 old); 1959 } 1960 1961 sdata->restart_active_links = active_links; 1962 1963 for (link_id = 0; 1964 link_id < ARRAY_SIZE(sdata->vif.link_conf); 1965 link_id++) { 1966 if (!ieee80211_vif_link_active(&sdata->vif, link_id)) 1967 continue; 1968 1969 link = sdata_dereference(sdata->link[link_id], sdata); 1970 if (!link) 1971 continue; 1972 1973 ieee80211_assign_chanctx(local, sdata, link); 1974 } 1975 1976 switch (sdata->vif.type) { 1977 case NL80211_IFTYPE_AP_VLAN: 1978 case NL80211_IFTYPE_MONITOR: 1979 break; 1980 case NL80211_IFTYPE_ADHOC: 1981 if (sdata->vif.cfg.ibss_joined) 1982 WARN_ON(drv_join_ibss(local, sdata)); 1983 fallthrough; 1984 default: 1985 ieee80211_reconfig_stations(sdata); 1986 fallthrough; 1987 case NL80211_IFTYPE_AP: /* AP stations are handled later */ 1988 for (i = 0; i < IEEE80211_NUM_ACS; i++) 1989 drv_conf_tx(local, &sdata->deflink, i, 1990 &sdata->deflink.tx_conf[i]); 1991 break; 1992 } 1993 1994 if (sdata->vif.bss_conf.mu_mimo_owner) 1995 changed |= BSS_CHANGED_MU_GROUPS; 1996 1997 if (!ieee80211_vif_is_mld(&sdata->vif)) 1998 changed |= BSS_CHANGED_IDLE; 1999 2000 switch (sdata->vif.type) { 2001 case NL80211_IFTYPE_STATION: 2002 if (!ieee80211_vif_is_mld(&sdata->vif)) { 2003 changed |= BSS_CHANGED_ASSOC | 2004 BSS_CHANGED_ARP_FILTER | 2005 BSS_CHANGED_PS; 2006 2007 /* Re-send beacon info report to the driver */ 2008 if (sdata->deflink.u.mgd.have_beacon) 2009 changed |= BSS_CHANGED_BEACON_INFO; 2010 2011 if (sdata->vif.bss_conf.max_idle_period || 2012 sdata->vif.bss_conf.protected_keep_alive) 2013 changed |= BSS_CHANGED_KEEP_ALIVE; 2014 2015 ieee80211_bss_info_change_notify(sdata, 2016 changed); 2017 } else if (!WARN_ON(!link)) { 2018 ieee80211_link_info_change_notify(sdata, link, 2019 changed); 2020 changed = BSS_CHANGED_ASSOC | 2021 BSS_CHANGED_IDLE | 2022 BSS_CHANGED_PS | 2023 BSS_CHANGED_ARP_FILTER; 2024 ieee80211_vif_cfg_change_notify(sdata, changed); 2025 } 2026 break; 2027 case NL80211_IFTYPE_OCB: 2028 changed |= BSS_CHANGED_OCB; 2029 ieee80211_bss_info_change_notify(sdata, changed); 2030 break; 2031 case NL80211_IFTYPE_ADHOC: 2032 changed |= BSS_CHANGED_IBSS; 2033 fallthrough; 2034 case NL80211_IFTYPE_AP: 2035 changed |= BSS_CHANGED_P2P_PS; 2036 2037 if (ieee80211_vif_is_mld(&sdata->vif)) 2038 ieee80211_vif_cfg_change_notify(sdata, 2039 BSS_CHANGED_SSID); 2040 else 2041 changed |= BSS_CHANGED_SSID; 2042 2043 if (sdata->vif.bss_conf.ftm_responder == 1 && 2044 wiphy_ext_feature_isset(sdata->local->hw.wiphy, 2045 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER)) 2046 changed |= BSS_CHANGED_FTM_RESPONDER; 2047 2048 if (sdata->vif.type == NL80211_IFTYPE_AP) { 2049 changed |= BSS_CHANGED_AP_PROBE_RESP; 2050 2051 if (ieee80211_vif_is_mld(&sdata->vif)) { 2052 ieee80211_reconfig_ap_links(local, 2053 sdata, 2054 changed); 2055 break; 2056 } 2057 2058 if (rcu_access_pointer(sdata->deflink.u.ap.beacon)) 2059 drv_start_ap(local, sdata, 2060 sdata->deflink.conf); 2061 } 2062 fallthrough; 2063 case NL80211_IFTYPE_MESH_POINT: 2064 if (sdata->vif.bss_conf.enable_beacon) { 2065 changed |= BSS_CHANGED_BEACON | 2066 BSS_CHANGED_BEACON_ENABLED; 2067 ieee80211_bss_info_change_notify(sdata, changed); 2068 } 2069 break; 2070 case NL80211_IFTYPE_NAN: 2071 res = ieee80211_reconfig_nan(sdata); 2072 if (res < 0) { 2073 ieee80211_handle_reconfig_failure(local); 2074 return res; 2075 } 2076 break; 2077 case NL80211_IFTYPE_AP_VLAN: 2078 case NL80211_IFTYPE_MONITOR: 2079 case NL80211_IFTYPE_P2P_DEVICE: 2080 /* nothing to do */ 2081 break; 2082 case NL80211_IFTYPE_UNSPECIFIED: 2083 case NUM_NL80211_IFTYPES: 2084 case NL80211_IFTYPE_P2P_CLIENT: 2085 case NL80211_IFTYPE_P2P_GO: 2086 case NL80211_IFTYPE_WDS: 2087 WARN_ON(1); 2088 break; 2089 } 2090 } 2091 2092 ieee80211_recalc_ps(local); 2093 2094 /* 2095 * The sta might be in psm against the ap (e.g. because 2096 * this was the state before a hw restart), so we 2097 * explicitly send a null packet in order to make sure 2098 * it'll sync against the ap (and get out of psm). 2099 */ 2100 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { 2101 list_for_each_entry(sdata, &local->interfaces, list) { 2102 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2103 continue; 2104 if (!sdata->u.mgd.associated) 2105 continue; 2106 2107 ieee80211_send_nullfunc(local, sdata, false); 2108 } 2109 } 2110 2111 /* APs are now beaconing, add back stations */ 2112 list_for_each_entry(sdata, &local->interfaces, list) { 2113 if (!ieee80211_sdata_running(sdata)) 2114 continue; 2115 2116 switch (sdata->vif.type) { 2117 case NL80211_IFTYPE_AP_VLAN: 2118 case NL80211_IFTYPE_AP: 2119 ieee80211_reconfig_stations(sdata); 2120 break; 2121 default: 2122 break; 2123 } 2124 } 2125 2126 /* add back keys */ 2127 list_for_each_entry(sdata, &local->interfaces, list) 2128 ieee80211_reenable_keys(sdata); 2129 2130 /* re-enable multi-link for client interfaces */ 2131 list_for_each_entry(sdata, &local->interfaces, list) { 2132 if (sdata->restart_active_links) 2133 ieee80211_set_active_links(&sdata->vif, 2134 sdata->restart_active_links); 2135 /* 2136 * If a link switch was scheduled before the restart, and ran 2137 * before reconfig, it will do nothing, so re-schedule. 2138 */ 2139 if (sdata->desired_active_links) 2140 wiphy_work_queue(sdata->local->hw.wiphy, 2141 &sdata->activate_links_work); 2142 } 2143 2144 /* Reconfigure sched scan if it was interrupted by FW restart */ 2145 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, 2146 lockdep_is_held(&local->hw.wiphy->mtx)); 2147 sched_scan_req = rcu_dereference_protected(local->sched_scan_req, 2148 lockdep_is_held(&local->hw.wiphy->mtx)); 2149 if (sched_scan_sdata && sched_scan_req) 2150 /* 2151 * Sched scan stopped, but we don't want to report it. Instead, 2152 * we're trying to reschedule. However, if more than one scan 2153 * plan was set, we cannot reschedule since we don't know which 2154 * scan plan was currently running (and some scan plans may have 2155 * already finished). 2156 */ 2157 if (sched_scan_req->n_scan_plans > 1 || 2158 __ieee80211_request_sched_scan_start(sched_scan_sdata, 2159 sched_scan_req)) { 2160 RCU_INIT_POINTER(local->sched_scan_sdata, NULL); 2161 RCU_INIT_POINTER(local->sched_scan_req, NULL); 2162 sched_scan_stopped = true; 2163 } 2164 2165 if (sched_scan_stopped) 2166 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0); 2167 2168 wake_up: 2169 2170 if (local->monitors == local->open_count && local->monitors > 0) 2171 ieee80211_add_virtual_monitor(local); 2172 2173 /* 2174 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation 2175 * sessions can be established after a resume. 2176 * 2177 * Also tear down aggregation sessions since reconfiguring 2178 * them in a hardware restart scenario is not easily done 2179 * right now, and the hardware will have lost information 2180 * about the sessions, but we and the AP still think they 2181 * are active. This is really a workaround though. 2182 */ 2183 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { 2184 list_for_each_entry(sta, &local->sta_list, list) { 2185 if (!local->resuming) 2186 ieee80211_sta_tear_down_BA_sessions( 2187 sta, AGG_STOP_LOCAL_REQUEST); 2188 clear_sta_flag(sta, WLAN_STA_BLOCK_BA); 2189 } 2190 } 2191 2192 /* 2193 * If this is for hw restart things are still running. 2194 * We may want to change that later, however. 2195 */ 2196 if (local->open_count && (!suspended || reconfig_due_to_wowlan)) 2197 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART); 2198 2199 if (local->in_reconfig) { 2200 in_reconfig = local->in_reconfig; 2201 local->in_reconfig = false; 2202 barrier(); 2203 2204 ieee80211_reconfig_roc(local); 2205 2206 /* Requeue all works */ 2207 list_for_each_entry(sdata, &local->interfaces, list) 2208 wiphy_work_queue(local->hw.wiphy, &sdata->work); 2209 } 2210 2211 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 2212 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 2213 false); 2214 2215 if (in_reconfig) { 2216 list_for_each_entry(sdata, &local->interfaces, list) { 2217 if (!ieee80211_sdata_running(sdata)) 2218 continue; 2219 if (sdata->vif.type == NL80211_IFTYPE_STATION) 2220 ieee80211_sta_restart(sdata); 2221 } 2222 } 2223 2224 if (!suspended) 2225 return 0; 2226 2227 #ifdef CONFIG_PM 2228 /* first set suspended false, then resuming */ 2229 local->suspended = false; 2230 mb(); 2231 local->resuming = false; 2232 2233 ieee80211_flush_completed_scan(local, false); 2234 2235 if (local->open_count && !reconfig_due_to_wowlan) 2236 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND); 2237 2238 list_for_each_entry(sdata, &local->interfaces, list) { 2239 if (!ieee80211_sdata_running(sdata)) 2240 continue; 2241 if (sdata->vif.type == NL80211_IFTYPE_STATION) 2242 ieee80211_sta_restart(sdata); 2243 } 2244 2245 mod_timer(&local->sta_cleanup, jiffies + 1); 2246 #else 2247 WARN_ON(1); 2248 #endif 2249 2250 return 0; 2251 } 2252 2253 static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag) 2254 { 2255 struct ieee80211_sub_if_data *sdata; 2256 struct ieee80211_local *local; 2257 struct ieee80211_key *key; 2258 2259 if (WARN_ON(!vif)) 2260 return; 2261 2262 sdata = vif_to_sdata(vif); 2263 local = sdata->local; 2264 2265 lockdep_assert_wiphy(local->hw.wiphy); 2266 2267 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME && 2268 !local->resuming)) 2269 return; 2270 2271 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART && 2272 !local->in_reconfig)) 2273 return; 2274 2275 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) 2276 return; 2277 2278 sdata->flags |= flag; 2279 2280 list_for_each_entry(key, &sdata->key_list, list) 2281 key->flags |= KEY_FLAG_TAINTED; 2282 } 2283 2284 void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif) 2285 { 2286 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART); 2287 } 2288 EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect); 2289 2290 void ieee80211_resume_disconnect(struct ieee80211_vif *vif) 2291 { 2292 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME); 2293 } 2294 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); 2295 2296 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, 2297 struct ieee80211_link_data *link) 2298 { 2299 struct ieee80211_local *local = sdata->local; 2300 struct ieee80211_chanctx_conf *chanctx_conf; 2301 struct ieee80211_chanctx *chanctx; 2302 2303 lockdep_assert_wiphy(local->hw.wiphy); 2304 2305 chanctx_conf = rcu_dereference_protected(link->conf->chanctx_conf, 2306 lockdep_is_held(&local->hw.wiphy->mtx)); 2307 2308 /* 2309 * This function can be called from a work, thus it may be possible 2310 * that the chanctx_conf is removed (due to a disconnection, for 2311 * example). 2312 * So nothing should be done in such case. 2313 */ 2314 if (!chanctx_conf) 2315 return; 2316 2317 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 2318 ieee80211_recalc_smps_chanctx(local, chanctx); 2319 } 2320 2321 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, 2322 int link_id) 2323 { 2324 struct ieee80211_local *local = sdata->local; 2325 struct ieee80211_chanctx_conf *chanctx_conf; 2326 struct ieee80211_chanctx *chanctx; 2327 int i; 2328 2329 lockdep_assert_wiphy(local->hw.wiphy); 2330 2331 for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) { 2332 struct ieee80211_bss_conf *bss_conf; 2333 2334 if (link_id >= 0 && link_id != i) 2335 continue; 2336 2337 rcu_read_lock(); 2338 bss_conf = rcu_dereference(sdata->vif.link_conf[i]); 2339 if (!bss_conf) { 2340 rcu_read_unlock(); 2341 continue; 2342 } 2343 2344 chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf, 2345 lockdep_is_held(&local->hw.wiphy->mtx)); 2346 /* 2347 * Since we hold the wiphy mutex (checked above) 2348 * we can take the chanctx_conf pointer out of the 2349 * RCU critical section, it cannot go away without 2350 * the mutex. Just the way we reached it could - in 2351 * theory - go away, but we don't really care and 2352 * it really shouldn't happen anyway. 2353 */ 2354 rcu_read_unlock(); 2355 2356 if (!chanctx_conf) 2357 return; 2358 2359 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, 2360 conf); 2361 ieee80211_recalc_chanctx_min_def(local, chanctx, NULL, false); 2362 } 2363 } 2364 2365 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) 2366 { 2367 size_t pos = offset; 2368 2369 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) 2370 pos += 2 + ies[pos + 1]; 2371 2372 return pos; 2373 } 2374 2375 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2376 u16 cap) 2377 { 2378 __le16 tmp; 2379 2380 *pos++ = WLAN_EID_HT_CAPABILITY; 2381 *pos++ = sizeof(struct ieee80211_ht_cap); 2382 memset(pos, 0, sizeof(struct ieee80211_ht_cap)); 2383 2384 /* capability flags */ 2385 tmp = cpu_to_le16(cap); 2386 memcpy(pos, &tmp, sizeof(u16)); 2387 pos += sizeof(u16); 2388 2389 /* AMPDU parameters */ 2390 *pos++ = ht_cap->ampdu_factor | 2391 (ht_cap->ampdu_density << 2392 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); 2393 2394 /* MCS set */ 2395 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); 2396 pos += sizeof(ht_cap->mcs); 2397 2398 /* extended capabilities */ 2399 pos += sizeof(__le16); 2400 2401 /* BF capabilities */ 2402 pos += sizeof(__le32); 2403 2404 /* antenna selection */ 2405 pos += sizeof(u8); 2406 2407 return pos; 2408 } 2409 2410 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2411 u32 cap) 2412 { 2413 __le32 tmp; 2414 2415 *pos++ = WLAN_EID_VHT_CAPABILITY; 2416 *pos++ = sizeof(struct ieee80211_vht_cap); 2417 memset(pos, 0, sizeof(struct ieee80211_vht_cap)); 2418 2419 /* capability flags */ 2420 tmp = cpu_to_le32(cap); 2421 memcpy(pos, &tmp, sizeof(u32)); 2422 pos += sizeof(u32); 2423 2424 /* VHT MCS set */ 2425 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); 2426 pos += sizeof(vht_cap->vht_mcs); 2427 2428 return pos; 2429 } 2430 2431 /* this may return more than ieee80211_put_he_6ghz_cap() will need */ 2432 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata) 2433 { 2434 const struct ieee80211_sta_he_cap *he_cap; 2435 struct ieee80211_supported_band *sband; 2436 u8 n; 2437 2438 sband = ieee80211_get_sband(sdata); 2439 if (!sband) 2440 return 0; 2441 2442 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 2443 if (!he_cap) 2444 return 0; 2445 2446 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem); 2447 return 2 + 1 + 2448 sizeof(he_cap->he_cap_elem) + n + 2449 ieee80211_he_ppe_size(he_cap->ppe_thres[0], 2450 he_cap->he_cap_elem.phy_cap_info); 2451 } 2452 2453 static void 2454 ieee80211_get_adjusted_he_cap(const struct ieee80211_conn_settings *conn, 2455 const struct ieee80211_sta_he_cap *he_cap, 2456 struct ieee80211_he_cap_elem *elem) 2457 { 2458 u8 ru_limit, max_ru; 2459 2460 *elem = he_cap->he_cap_elem; 2461 2462 switch (conn->bw_limit) { 2463 case IEEE80211_CONN_BW_LIMIT_20: 2464 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242; 2465 break; 2466 case IEEE80211_CONN_BW_LIMIT_40: 2467 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484; 2468 break; 2469 case IEEE80211_CONN_BW_LIMIT_80: 2470 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996; 2471 break; 2472 default: 2473 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996; 2474 break; 2475 } 2476 2477 max_ru = elem->phy_cap_info[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK; 2478 max_ru = min(max_ru, ru_limit); 2479 elem->phy_cap_info[8] &= ~IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK; 2480 elem->phy_cap_info[8] |= max_ru; 2481 2482 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_40) { 2483 elem->phy_cap_info[0] &= 2484 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G | 2485 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G); 2486 elem->phy_cap_info[9] &= 2487 ~IEEE80211_HE_PHY_CAP9_LONGER_THAN_16_SIGB_OFDM_SYM; 2488 } 2489 2490 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) { 2491 elem->phy_cap_info[0] &= 2492 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G | 2493 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G); 2494 elem->phy_cap_info[5] &= 2495 ~IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ_MASK; 2496 elem->phy_cap_info[7] &= 2497 ~(IEEE80211_HE_PHY_CAP7_STBC_TX_ABOVE_80MHZ | 2498 IEEE80211_HE_PHY_CAP7_STBC_RX_ABOVE_80MHZ); 2499 } 2500 } 2501 2502 int ieee80211_put_he_cap(struct sk_buff *skb, 2503 struct ieee80211_sub_if_data *sdata, 2504 const struct ieee80211_supported_band *sband, 2505 const struct ieee80211_conn_settings *conn) 2506 { 2507 const struct ieee80211_sta_he_cap *he_cap; 2508 struct ieee80211_he_cap_elem elem; 2509 u8 *len; 2510 u8 n; 2511 u8 ie_len; 2512 2513 if (!conn) 2514 conn = &ieee80211_conn_settings_unlimited; 2515 2516 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 2517 if (!he_cap) 2518 return 0; 2519 2520 /* modify on stack first to calculate 'n' and 'ie_len' correctly */ 2521 ieee80211_get_adjusted_he_cap(conn, he_cap, &elem); 2522 2523 n = ieee80211_he_mcs_nss_size(&elem); 2524 ie_len = 2 + 1 + 2525 sizeof(he_cap->he_cap_elem) + n + 2526 ieee80211_he_ppe_size(he_cap->ppe_thres[0], 2527 he_cap->he_cap_elem.phy_cap_info); 2528 2529 if (skb_tailroom(skb) < ie_len) 2530 return -ENOBUFS; 2531 2532 skb_put_u8(skb, WLAN_EID_EXTENSION); 2533 len = skb_put(skb, 1); /* We'll set the size later below */ 2534 skb_put_u8(skb, WLAN_EID_EXT_HE_CAPABILITY); 2535 2536 /* Fixed data */ 2537 skb_put_data(skb, &elem, sizeof(elem)); 2538 2539 skb_put_data(skb, &he_cap->he_mcs_nss_supp, n); 2540 2541 /* Check if PPE Threshold should be present */ 2542 if ((he_cap->he_cap_elem.phy_cap_info[6] & 2543 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0) 2544 goto end; 2545 2546 /* 2547 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm: 2548 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK) 2549 */ 2550 n = hweight8(he_cap->ppe_thres[0] & 2551 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK); 2552 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >> 2553 IEEE80211_PPE_THRES_NSS_POS)); 2554 2555 /* 2556 * Each pair is 6 bits, and we need to add the 7 "header" bits to the 2557 * total size. 2558 */ 2559 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7; 2560 n = DIV_ROUND_UP(n, 8); 2561 2562 /* Copy PPE Thresholds */ 2563 skb_put_data(skb, &he_cap->ppe_thres, n); 2564 2565 end: 2566 *len = skb_tail_pointer(skb) - len - 1; 2567 return 0; 2568 } 2569 2570 int ieee80211_put_he_6ghz_cap(struct sk_buff *skb, 2571 struct ieee80211_sub_if_data *sdata, 2572 enum ieee80211_smps_mode smps_mode) 2573 { 2574 struct ieee80211_supported_band *sband; 2575 const struct ieee80211_sband_iftype_data *iftd; 2576 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif); 2577 __le16 cap; 2578 2579 if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy, 2580 BIT(NL80211_BAND_6GHZ), 2581 IEEE80211_CHAN_NO_HE)) 2582 return 0; 2583 2584 sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ]; 2585 2586 iftd = ieee80211_get_sband_iftype_data(sband, iftype); 2587 if (!iftd) 2588 return 0; 2589 2590 /* Check for device HE 6 GHz capability before adding element */ 2591 if (!iftd->he_6ghz_capa.capa) 2592 return 0; 2593 2594 cap = iftd->he_6ghz_capa.capa; 2595 cap &= cpu_to_le16(~IEEE80211_HE_6GHZ_CAP_SM_PS); 2596 2597 switch (smps_mode) { 2598 case IEEE80211_SMPS_AUTOMATIC: 2599 case IEEE80211_SMPS_NUM_MODES: 2600 WARN_ON(1); 2601 fallthrough; 2602 case IEEE80211_SMPS_OFF: 2603 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED, 2604 IEEE80211_HE_6GHZ_CAP_SM_PS); 2605 break; 2606 case IEEE80211_SMPS_STATIC: 2607 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC, 2608 IEEE80211_HE_6GHZ_CAP_SM_PS); 2609 break; 2610 case IEEE80211_SMPS_DYNAMIC: 2611 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC, 2612 IEEE80211_HE_6GHZ_CAP_SM_PS); 2613 break; 2614 } 2615 2616 if (skb_tailroom(skb) < 2 + 1 + sizeof(cap)) 2617 return -ENOBUFS; 2618 2619 skb_put_u8(skb, WLAN_EID_EXTENSION); 2620 skb_put_u8(skb, 1 + sizeof(cap)); 2621 skb_put_u8(skb, WLAN_EID_EXT_HE_6GHZ_CAPA); 2622 skb_put_data(skb, &cap, sizeof(cap)); 2623 return 0; 2624 } 2625 2626 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2627 const struct cfg80211_chan_def *chandef, 2628 u16 prot_mode, bool rifs_mode) 2629 { 2630 struct ieee80211_ht_operation *ht_oper; 2631 /* Build HT Information */ 2632 *pos++ = WLAN_EID_HT_OPERATION; 2633 *pos++ = sizeof(struct ieee80211_ht_operation); 2634 ht_oper = (struct ieee80211_ht_operation *)pos; 2635 ht_oper->primary_chan = ieee80211_frequency_to_channel( 2636 chandef->chan->center_freq); 2637 switch (chandef->width) { 2638 case NL80211_CHAN_WIDTH_160: 2639 case NL80211_CHAN_WIDTH_80P80: 2640 case NL80211_CHAN_WIDTH_80: 2641 case NL80211_CHAN_WIDTH_40: 2642 if (chandef->center_freq1 > chandef->chan->center_freq) 2643 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 2644 else 2645 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 2646 break; 2647 case NL80211_CHAN_WIDTH_320: 2648 /* HT information element should not be included on 6GHz */ 2649 WARN_ON(1); 2650 return pos; 2651 default: 2652 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; 2653 break; 2654 } 2655 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 2656 chandef->width != NL80211_CHAN_WIDTH_20_NOHT && 2657 chandef->width != NL80211_CHAN_WIDTH_20) 2658 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; 2659 2660 if (rifs_mode) 2661 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE; 2662 2663 ht_oper->operation_mode = cpu_to_le16(prot_mode); 2664 ht_oper->stbc_param = 0x0000; 2665 2666 /* It seems that Basic MCS set and Supported MCS set 2667 are identical for the first 10 bytes */ 2668 memset(&ht_oper->basic_set, 0, 16); 2669 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); 2670 2671 return pos + sizeof(struct ieee80211_ht_operation); 2672 } 2673 2674 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2675 const struct cfg80211_chan_def *chandef) 2676 { 2677 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */ 2678 *pos++ = 3; /* IE length */ 2679 /* New channel width */ 2680 switch (chandef->width) { 2681 case NL80211_CHAN_WIDTH_80: 2682 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ; 2683 break; 2684 case NL80211_CHAN_WIDTH_160: 2685 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ; 2686 break; 2687 case NL80211_CHAN_WIDTH_80P80: 2688 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ; 2689 break; 2690 case NL80211_CHAN_WIDTH_320: 2691 /* The behavior is not defined for 320 MHz channels */ 2692 WARN_ON(1); 2693 fallthrough; 2694 default: 2695 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT; 2696 } 2697 2698 /* new center frequency segment 0 */ 2699 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1); 2700 /* new center frequency segment 1 */ 2701 if (chandef->center_freq2) 2702 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2); 2703 else 2704 *pos++ = 0; 2705 } 2706 2707 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2708 const struct cfg80211_chan_def *chandef) 2709 { 2710 struct ieee80211_vht_operation *vht_oper; 2711 2712 *pos++ = WLAN_EID_VHT_OPERATION; 2713 *pos++ = sizeof(struct ieee80211_vht_operation); 2714 vht_oper = (struct ieee80211_vht_operation *)pos; 2715 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel( 2716 chandef->center_freq1); 2717 if (chandef->center_freq2) 2718 vht_oper->center_freq_seg1_idx = 2719 ieee80211_frequency_to_channel(chandef->center_freq2); 2720 else 2721 vht_oper->center_freq_seg1_idx = 0x00; 2722 2723 switch (chandef->width) { 2724 case NL80211_CHAN_WIDTH_160: 2725 /* 2726 * Convert 160 MHz channel width to new style as interop 2727 * workaround. 2728 */ 2729 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2730 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx; 2731 if (chandef->chan->center_freq < chandef->center_freq1) 2732 vht_oper->center_freq_seg0_idx -= 8; 2733 else 2734 vht_oper->center_freq_seg0_idx += 8; 2735 break; 2736 case NL80211_CHAN_WIDTH_80P80: 2737 /* 2738 * Convert 80+80 MHz channel width to new style as interop 2739 * workaround. 2740 */ 2741 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2742 break; 2743 case NL80211_CHAN_WIDTH_80: 2744 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2745 break; 2746 case NL80211_CHAN_WIDTH_320: 2747 /* VHT information element should not be included on 6GHz */ 2748 WARN_ON(1); 2749 return pos; 2750 default: 2751 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; 2752 break; 2753 } 2754 2755 /* don't require special VHT peer rates */ 2756 vht_oper->basic_mcs_set = cpu_to_le16(0xffff); 2757 2758 return pos + sizeof(struct ieee80211_vht_operation); 2759 } 2760 2761 u8 *ieee80211_ie_build_he_oper(u8 *pos, const struct cfg80211_chan_def *chandef) 2762 { 2763 struct ieee80211_he_operation *he_oper; 2764 struct ieee80211_he_6ghz_oper *he_6ghz_op; 2765 u32 he_oper_params; 2766 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation); 2767 2768 if (chandef->chan->band == NL80211_BAND_6GHZ) 2769 ie_len += sizeof(struct ieee80211_he_6ghz_oper); 2770 2771 *pos++ = WLAN_EID_EXTENSION; 2772 *pos++ = ie_len; 2773 *pos++ = WLAN_EID_EXT_HE_OPERATION; 2774 2775 he_oper_params = 0; 2776 he_oper_params |= u32_encode_bits(1023, /* disabled */ 2777 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK); 2778 he_oper_params |= u32_encode_bits(1, 2779 IEEE80211_HE_OPERATION_ER_SU_DISABLE); 2780 he_oper_params |= u32_encode_bits(1, 2781 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED); 2782 if (chandef->chan->band == NL80211_BAND_6GHZ) 2783 he_oper_params |= u32_encode_bits(1, 2784 IEEE80211_HE_OPERATION_6GHZ_OP_INFO); 2785 2786 he_oper = (struct ieee80211_he_operation *)pos; 2787 he_oper->he_oper_params = cpu_to_le32(he_oper_params); 2788 2789 /* don't require special HE peer rates */ 2790 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff); 2791 pos += sizeof(struct ieee80211_he_operation); 2792 2793 if (chandef->chan->band != NL80211_BAND_6GHZ) 2794 goto out; 2795 2796 /* TODO add VHT operational */ 2797 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos; 2798 he_6ghz_op->minrate = 6; /* 6 Mbps */ 2799 he_6ghz_op->primary = 2800 ieee80211_frequency_to_channel(chandef->chan->center_freq); 2801 he_6ghz_op->ccfs0 = 2802 ieee80211_frequency_to_channel(chandef->center_freq1); 2803 if (chandef->center_freq2) 2804 he_6ghz_op->ccfs1 = 2805 ieee80211_frequency_to_channel(chandef->center_freq2); 2806 else 2807 he_6ghz_op->ccfs1 = 0; 2808 2809 switch (chandef->width) { 2810 case NL80211_CHAN_WIDTH_320: 2811 /* 2812 * TODO: mesh operation is not defined over 6GHz 320 MHz 2813 * channels. 2814 */ 2815 WARN_ON(1); 2816 break; 2817 case NL80211_CHAN_WIDTH_160: 2818 /* Convert 160 MHz channel width to new style as interop 2819 * workaround. 2820 */ 2821 he_6ghz_op->control = 2822 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; 2823 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0; 2824 if (chandef->chan->center_freq < chandef->center_freq1) 2825 he_6ghz_op->ccfs0 -= 8; 2826 else 2827 he_6ghz_op->ccfs0 += 8; 2828 fallthrough; 2829 case NL80211_CHAN_WIDTH_80P80: 2830 he_6ghz_op->control = 2831 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; 2832 break; 2833 case NL80211_CHAN_WIDTH_80: 2834 he_6ghz_op->control = 2835 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ; 2836 break; 2837 case NL80211_CHAN_WIDTH_40: 2838 he_6ghz_op->control = 2839 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ; 2840 break; 2841 default: 2842 he_6ghz_op->control = 2843 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ; 2844 break; 2845 } 2846 2847 pos += sizeof(struct ieee80211_he_6ghz_oper); 2848 2849 out: 2850 return pos; 2851 } 2852 2853 u8 *ieee80211_ie_build_eht_oper(u8 *pos, const struct cfg80211_chan_def *chandef, 2854 const struct ieee80211_sta_eht_cap *eht_cap) 2855 2856 { 2857 const struct ieee80211_eht_mcs_nss_supp_20mhz_only *eht_mcs_nss = 2858 &eht_cap->eht_mcs_nss_supp.only_20mhz; 2859 struct ieee80211_eht_operation *eht_oper; 2860 struct ieee80211_eht_operation_info *eht_oper_info; 2861 u8 eht_oper_len = offsetof(struct ieee80211_eht_operation, optional); 2862 u8 eht_oper_info_len = 2863 offsetof(struct ieee80211_eht_operation_info, optional); 2864 u8 chan_width = 0; 2865 2866 *pos++ = WLAN_EID_EXTENSION; 2867 *pos++ = 1 + eht_oper_len + eht_oper_info_len; 2868 *pos++ = WLAN_EID_EXT_EHT_OPERATION; 2869 2870 eht_oper = (struct ieee80211_eht_operation *)pos; 2871 2872 memcpy(&eht_oper->basic_mcs_nss, eht_mcs_nss, sizeof(*eht_mcs_nss)); 2873 eht_oper->params |= IEEE80211_EHT_OPER_INFO_PRESENT; 2874 pos += eht_oper_len; 2875 2876 eht_oper_info = 2877 (struct ieee80211_eht_operation_info *)eht_oper->optional; 2878 2879 eht_oper_info->ccfs0 = 2880 ieee80211_frequency_to_channel(chandef->center_freq1); 2881 if (chandef->center_freq2) 2882 eht_oper_info->ccfs1 = 2883 ieee80211_frequency_to_channel(chandef->center_freq2); 2884 else 2885 eht_oper_info->ccfs1 = 0; 2886 2887 switch (chandef->width) { 2888 case NL80211_CHAN_WIDTH_320: 2889 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ; 2890 eht_oper_info->ccfs1 = eht_oper_info->ccfs0; 2891 if (chandef->chan->center_freq < chandef->center_freq1) 2892 eht_oper_info->ccfs0 -= 16; 2893 else 2894 eht_oper_info->ccfs0 += 16; 2895 break; 2896 case NL80211_CHAN_WIDTH_160: 2897 eht_oper_info->ccfs1 = eht_oper_info->ccfs0; 2898 if (chandef->chan->center_freq < chandef->center_freq1) 2899 eht_oper_info->ccfs0 -= 8; 2900 else 2901 eht_oper_info->ccfs0 += 8; 2902 fallthrough; 2903 case NL80211_CHAN_WIDTH_80P80: 2904 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ; 2905 break; 2906 case NL80211_CHAN_WIDTH_80: 2907 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ; 2908 break; 2909 case NL80211_CHAN_WIDTH_40: 2910 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ; 2911 break; 2912 default: 2913 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ; 2914 break; 2915 } 2916 eht_oper_info->control = chan_width; 2917 pos += eht_oper_info_len; 2918 2919 /* TODO: eht_oper_info->optional */ 2920 2921 return pos; 2922 } 2923 2924 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2925 struct cfg80211_chan_def *chandef) 2926 { 2927 enum nl80211_channel_type channel_type; 2928 2929 if (!ht_oper) 2930 return false; 2931 2932 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { 2933 case IEEE80211_HT_PARAM_CHA_SEC_NONE: 2934 channel_type = NL80211_CHAN_HT20; 2935 break; 2936 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: 2937 channel_type = NL80211_CHAN_HT40PLUS; 2938 break; 2939 case IEEE80211_HT_PARAM_CHA_SEC_BELOW: 2940 channel_type = NL80211_CHAN_HT40MINUS; 2941 break; 2942 default: 2943 return false; 2944 } 2945 2946 cfg80211_chandef_create(chandef, chandef->chan, channel_type); 2947 return true; 2948 } 2949 2950 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 2951 const struct ieee80211_vht_operation *oper, 2952 const struct ieee80211_ht_operation *htop, 2953 struct cfg80211_chan_def *chandef) 2954 { 2955 struct cfg80211_chan_def new = *chandef; 2956 int cf0, cf1; 2957 int ccfs0, ccfs1, ccfs2; 2958 int ccf0, ccf1; 2959 u32 vht_cap; 2960 bool support_80_80 = false; 2961 bool support_160 = false; 2962 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info, 2963 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK); 2964 u8 supp_chwidth = u32_get_bits(vht_cap_info, 2965 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK); 2966 2967 if (!oper || !htop) 2968 return false; 2969 2970 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap; 2971 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK | 2972 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)); 2973 support_80_80 = ((vht_cap & 2974 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) || 2975 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ && 2976 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) || 2977 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >> 2978 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1)); 2979 ccfs0 = oper->center_freq_seg0_idx; 2980 ccfs1 = oper->center_freq_seg1_idx; 2981 ccfs2 = (le16_to_cpu(htop->operation_mode) & 2982 IEEE80211_HT_OP_MODE_CCFS2_MASK) 2983 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT; 2984 2985 ccf0 = ccfs0; 2986 2987 /* if not supported, parse as though we didn't understand it */ 2988 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW)) 2989 ext_nss_bw_supp = 0; 2990 2991 /* 2992 * Cf. IEEE 802.11 Table 9-250 2993 * 2994 * We really just consider that because it's inefficient to connect 2995 * at a higher bandwidth than we'll actually be able to use. 2996 */ 2997 switch ((supp_chwidth << 4) | ext_nss_bw_supp) { 2998 default: 2999 case 0x00: 3000 ccf1 = 0; 3001 support_160 = false; 3002 support_80_80 = false; 3003 break; 3004 case 0x01: 3005 support_80_80 = false; 3006 fallthrough; 3007 case 0x02: 3008 case 0x03: 3009 ccf1 = ccfs2; 3010 break; 3011 case 0x10: 3012 ccf1 = ccfs1; 3013 break; 3014 case 0x11: 3015 case 0x12: 3016 if (!ccfs1) 3017 ccf1 = ccfs2; 3018 else 3019 ccf1 = ccfs1; 3020 break; 3021 case 0x13: 3022 case 0x20: 3023 case 0x23: 3024 ccf1 = ccfs1; 3025 break; 3026 } 3027 3028 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band); 3029 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band); 3030 3031 switch (oper->chan_width) { 3032 case IEEE80211_VHT_CHANWIDTH_USE_HT: 3033 /* just use HT information directly */ 3034 break; 3035 case IEEE80211_VHT_CHANWIDTH_80MHZ: 3036 new.width = NL80211_CHAN_WIDTH_80; 3037 new.center_freq1 = cf0; 3038 /* If needed, adjust based on the newer interop workaround. */ 3039 if (ccf1) { 3040 unsigned int diff; 3041 3042 diff = abs(ccf1 - ccf0); 3043 if ((diff == 8) && support_160) { 3044 new.width = NL80211_CHAN_WIDTH_160; 3045 new.center_freq1 = cf1; 3046 } else if ((diff > 8) && support_80_80) { 3047 new.width = NL80211_CHAN_WIDTH_80P80; 3048 new.center_freq2 = cf1; 3049 } 3050 } 3051 break; 3052 case IEEE80211_VHT_CHANWIDTH_160MHZ: 3053 /* deprecated encoding */ 3054 new.width = NL80211_CHAN_WIDTH_160; 3055 new.center_freq1 = cf0; 3056 break; 3057 case IEEE80211_VHT_CHANWIDTH_80P80MHZ: 3058 /* deprecated encoding */ 3059 new.width = NL80211_CHAN_WIDTH_80P80; 3060 new.center_freq1 = cf0; 3061 new.center_freq2 = cf1; 3062 break; 3063 default: 3064 return false; 3065 } 3066 3067 if (!cfg80211_chandef_valid(&new)) 3068 return false; 3069 3070 *chandef = new; 3071 return true; 3072 } 3073 3074 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation_info *info, 3075 struct cfg80211_chan_def *chandef) 3076 { 3077 chandef->center_freq1 = 3078 ieee80211_channel_to_frequency(info->ccfs0, 3079 chandef->chan->band); 3080 3081 switch (u8_get_bits(info->control, 3082 IEEE80211_EHT_OPER_CHAN_WIDTH)) { 3083 case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ: 3084 chandef->width = NL80211_CHAN_WIDTH_20; 3085 break; 3086 case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ: 3087 chandef->width = NL80211_CHAN_WIDTH_40; 3088 break; 3089 case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ: 3090 chandef->width = NL80211_CHAN_WIDTH_80; 3091 break; 3092 case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ: 3093 chandef->width = NL80211_CHAN_WIDTH_160; 3094 chandef->center_freq1 = 3095 ieee80211_channel_to_frequency(info->ccfs1, 3096 chandef->chan->band); 3097 break; 3098 case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ: 3099 chandef->width = NL80211_CHAN_WIDTH_320; 3100 chandef->center_freq1 = 3101 ieee80211_channel_to_frequency(info->ccfs1, 3102 chandef->chan->band); 3103 break; 3104 } 3105 } 3106 3107 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_local *local, 3108 const struct ieee80211_he_operation *he_oper, 3109 const struct ieee80211_eht_operation *eht_oper, 3110 struct cfg80211_chan_def *chandef) 3111 { 3112 struct cfg80211_chan_def he_chandef = *chandef; 3113 const struct ieee80211_he_6ghz_oper *he_6ghz_oper; 3114 u32 freq; 3115 3116 if (chandef->chan->band != NL80211_BAND_6GHZ) 3117 return true; 3118 3119 if (!he_oper) 3120 return false; 3121 3122 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper); 3123 if (!he_6ghz_oper) 3124 return false; 3125 3126 /* 3127 * The EHT operation IE does not contain the primary channel so the 3128 * primary channel frequency should be taken from the 6 GHz operation 3129 * information. 3130 */ 3131 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary, 3132 NL80211_BAND_6GHZ); 3133 he_chandef.chan = ieee80211_get_channel(local->hw.wiphy, freq); 3134 3135 if (!he_chandef.chan) 3136 return false; 3137 3138 if (!eht_oper || 3139 !(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) { 3140 switch (u8_get_bits(he_6ghz_oper->control, 3141 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) { 3142 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ: 3143 he_chandef.width = NL80211_CHAN_WIDTH_20; 3144 break; 3145 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ: 3146 he_chandef.width = NL80211_CHAN_WIDTH_40; 3147 break; 3148 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ: 3149 he_chandef.width = NL80211_CHAN_WIDTH_80; 3150 break; 3151 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ: 3152 he_chandef.width = NL80211_CHAN_WIDTH_80; 3153 if (!he_6ghz_oper->ccfs1) 3154 break; 3155 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) 3156 he_chandef.width = NL80211_CHAN_WIDTH_160; 3157 else 3158 he_chandef.width = NL80211_CHAN_WIDTH_80P80; 3159 break; 3160 } 3161 3162 if (he_chandef.width == NL80211_CHAN_WIDTH_160) { 3163 he_chandef.center_freq1 = 3164 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, 3165 NL80211_BAND_6GHZ); 3166 } else { 3167 he_chandef.center_freq1 = 3168 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0, 3169 NL80211_BAND_6GHZ); 3170 he_chandef.center_freq2 = 3171 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, 3172 NL80211_BAND_6GHZ); 3173 } 3174 } else { 3175 ieee80211_chandef_eht_oper((const void *)eht_oper->optional, 3176 &he_chandef); 3177 he_chandef.punctured = 3178 ieee80211_eht_oper_dis_subchan_bitmap(eht_oper); 3179 } 3180 3181 if (!cfg80211_chandef_valid(&he_chandef)) 3182 return false; 3183 3184 *chandef = he_chandef; 3185 3186 return true; 3187 } 3188 3189 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 3190 struct cfg80211_chan_def *chandef) 3191 { 3192 u32 oper_freq; 3193 3194 if (!oper) 3195 return false; 3196 3197 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) { 3198 case IEEE80211_S1G_CHANWIDTH_1MHZ: 3199 chandef->width = NL80211_CHAN_WIDTH_1; 3200 break; 3201 case IEEE80211_S1G_CHANWIDTH_2MHZ: 3202 chandef->width = NL80211_CHAN_WIDTH_2; 3203 break; 3204 case IEEE80211_S1G_CHANWIDTH_4MHZ: 3205 chandef->width = NL80211_CHAN_WIDTH_4; 3206 break; 3207 case IEEE80211_S1G_CHANWIDTH_8MHZ: 3208 chandef->width = NL80211_CHAN_WIDTH_8; 3209 break; 3210 case IEEE80211_S1G_CHANWIDTH_16MHZ: 3211 chandef->width = NL80211_CHAN_WIDTH_16; 3212 break; 3213 default: 3214 return false; 3215 } 3216 3217 oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch, 3218 NL80211_BAND_S1GHZ); 3219 chandef->center_freq1 = KHZ_TO_MHZ(oper_freq); 3220 chandef->freq1_offset = oper_freq % 1000; 3221 3222 return true; 3223 } 3224 3225 int ieee80211_put_srates_elem(struct sk_buff *skb, 3226 const struct ieee80211_supported_band *sband, 3227 u32 basic_rates, u32 rate_flags, u32 masked_rates, 3228 u8 element_id) 3229 { 3230 u8 i, rates, skip; 3231 3232 rates = 0; 3233 for (i = 0; i < sband->n_bitrates; i++) { 3234 if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 3235 continue; 3236 if (masked_rates & BIT(i)) 3237 continue; 3238 rates++; 3239 } 3240 3241 if (element_id == WLAN_EID_SUPP_RATES) { 3242 rates = min_t(u8, rates, 8); 3243 skip = 0; 3244 } else { 3245 skip = 8; 3246 if (rates <= skip) 3247 return 0; 3248 rates -= skip; 3249 } 3250 3251 if (skb_tailroom(skb) < rates + 2) 3252 return -ENOBUFS; 3253 3254 skb_put_u8(skb, element_id); 3255 skb_put_u8(skb, rates); 3256 3257 for (i = 0; i < sband->n_bitrates && rates; i++) { 3258 int rate; 3259 u8 basic; 3260 3261 if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 3262 continue; 3263 if (masked_rates & BIT(i)) 3264 continue; 3265 3266 if (skip > 0) { 3267 skip--; 3268 continue; 3269 } 3270 3271 basic = basic_rates & BIT(i) ? 0x80 : 0; 3272 3273 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 5); 3274 skb_put_u8(skb, basic | (u8)rate); 3275 rates--; 3276 } 3277 3278 WARN(rates > 0, "rates confused: rates:%d, element:%d\n", 3279 rates, element_id); 3280 3281 return 0; 3282 } 3283 3284 int ieee80211_ave_rssi(struct ieee80211_vif *vif) 3285 { 3286 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3287 3288 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 3289 return 0; 3290 3291 return -ewma_beacon_signal_read(&sdata->deflink.u.mgd.ave_beacon_signal); 3292 } 3293 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); 3294 3295 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) 3296 { 3297 if (!mcs) 3298 return 1; 3299 3300 /* TODO: consider rx_highest */ 3301 3302 if (mcs->rx_mask[3]) 3303 return 4; 3304 if (mcs->rx_mask[2]) 3305 return 3; 3306 if (mcs->rx_mask[1]) 3307 return 2; 3308 return 1; 3309 } 3310 3311 /** 3312 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame 3313 * @local: mac80211 hw info struct 3314 * @status: RX status 3315 * @mpdu_len: total MPDU length (including FCS) 3316 * @mpdu_offset: offset into MPDU to calculate timestamp at 3317 * 3318 * This function calculates the RX timestamp at the given MPDU offset, taking 3319 * into account what the RX timestamp was. An offset of 0 will just normalize 3320 * the timestamp to TSF at beginning of MPDU reception. 3321 * 3322 * Returns: the calculated timestamp 3323 */ 3324 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 3325 struct ieee80211_rx_status *status, 3326 unsigned int mpdu_len, 3327 unsigned int mpdu_offset) 3328 { 3329 u64 ts = status->mactime; 3330 bool mactime_plcp_start; 3331 struct rate_info ri; 3332 u16 rate; 3333 u8 n_ltf; 3334 3335 if (WARN_ON(!ieee80211_have_rx_timestamp(status))) 3336 return 0; 3337 3338 mactime_plcp_start = (status->flag & RX_FLAG_MACTIME) == 3339 RX_FLAG_MACTIME_PLCP_START; 3340 3341 memset(&ri, 0, sizeof(ri)); 3342 3343 ri.bw = status->bw; 3344 3345 /* Fill cfg80211 rate info */ 3346 switch (status->encoding) { 3347 case RX_ENC_EHT: 3348 ri.flags |= RATE_INFO_FLAGS_EHT_MCS; 3349 ri.mcs = status->rate_idx; 3350 ri.nss = status->nss; 3351 ri.eht_ru_alloc = status->eht.ru; 3352 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3353 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3354 /* TODO/FIXME: is this right? handle other PPDUs */ 3355 if (mactime_plcp_start) { 3356 mpdu_offset += 2; 3357 ts += 36; 3358 } 3359 break; 3360 case RX_ENC_HE: 3361 ri.flags |= RATE_INFO_FLAGS_HE_MCS; 3362 ri.mcs = status->rate_idx; 3363 ri.nss = status->nss; 3364 ri.he_ru_alloc = status->he_ru; 3365 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3366 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3367 3368 /* 3369 * See P802.11ax_D6.0, section 27.3.4 for 3370 * VHT PPDU format. 3371 */ 3372 if (mactime_plcp_start) { 3373 mpdu_offset += 2; 3374 ts += 36; 3375 3376 /* 3377 * TODO: 3378 * For HE MU PPDU, add the HE-SIG-B. 3379 * For HE ER PPDU, add 8us for the HE-SIG-A. 3380 * For HE TB PPDU, add 4us for the HE-STF. 3381 * Add the HE-LTF durations - variable. 3382 */ 3383 } 3384 3385 break; 3386 case RX_ENC_HT: 3387 ri.mcs = status->rate_idx; 3388 ri.flags |= RATE_INFO_FLAGS_MCS; 3389 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3390 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3391 3392 /* 3393 * See P802.11REVmd_D3.0, section 19.3.2 for 3394 * HT PPDU format. 3395 */ 3396 if (mactime_plcp_start) { 3397 mpdu_offset += 2; 3398 if (status->enc_flags & RX_ENC_FLAG_HT_GF) 3399 ts += 24; 3400 else 3401 ts += 32; 3402 3403 /* 3404 * Add Data HT-LTFs per streams 3405 * TODO: add Extension HT-LTFs, 4us per LTF 3406 */ 3407 n_ltf = ((ri.mcs >> 3) & 3) + 1; 3408 n_ltf = n_ltf == 3 ? 4 : n_ltf; 3409 ts += n_ltf * 4; 3410 } 3411 3412 break; 3413 case RX_ENC_VHT: 3414 ri.flags |= RATE_INFO_FLAGS_VHT_MCS; 3415 ri.mcs = status->rate_idx; 3416 ri.nss = status->nss; 3417 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3418 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3419 3420 /* 3421 * See P802.11REVmd_D3.0, section 21.3.2 for 3422 * VHT PPDU format. 3423 */ 3424 if (mactime_plcp_start) { 3425 mpdu_offset += 2; 3426 ts += 36; 3427 3428 /* 3429 * Add VHT-LTFs per streams 3430 */ 3431 n_ltf = (ri.nss != 1) && (ri.nss % 2) ? 3432 ri.nss + 1 : ri.nss; 3433 ts += 4 * n_ltf; 3434 } 3435 3436 break; 3437 default: 3438 WARN_ON(1); 3439 fallthrough; 3440 case RX_ENC_LEGACY: { 3441 struct ieee80211_supported_band *sband; 3442 3443 sband = local->hw.wiphy->bands[status->band]; 3444 ri.legacy = sband->bitrates[status->rate_idx].bitrate; 3445 3446 if (mactime_plcp_start) { 3447 if (status->band == NL80211_BAND_5GHZ) { 3448 ts += 20; 3449 mpdu_offset += 2; 3450 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) { 3451 ts += 96; 3452 } else { 3453 ts += 192; 3454 } 3455 } 3456 break; 3457 } 3458 } 3459 3460 rate = cfg80211_calculate_bitrate(&ri); 3461 if (WARN_ONCE(!rate, 3462 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n", 3463 (unsigned long long)status->flag, status->rate_idx, 3464 status->nss)) 3465 return 0; 3466 3467 /* rewind from end of MPDU */ 3468 if ((status->flag & RX_FLAG_MACTIME) == RX_FLAG_MACTIME_END) 3469 ts -= mpdu_len * 8 * 10 / rate; 3470 3471 ts += mpdu_offset * 8 * 10 / rate; 3472 3473 return ts; 3474 } 3475 3476 /* Cancel CAC for the interfaces under the specified @local. If @ctx is 3477 * also provided, only the interfaces using that ctx will be canceled. 3478 */ 3479 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local, 3480 struct ieee80211_chanctx *ctx) 3481 { 3482 struct ieee80211_sub_if_data *sdata; 3483 struct cfg80211_chan_def chandef; 3484 struct ieee80211_link_data *link; 3485 struct ieee80211_chanctx_conf *chanctx_conf; 3486 unsigned int link_id; 3487 3488 lockdep_assert_wiphy(local->hw.wiphy); 3489 3490 list_for_each_entry(sdata, &local->interfaces, list) { 3491 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; 3492 link_id++) { 3493 link = sdata_dereference(sdata->link[link_id], 3494 sdata); 3495 if (!link) 3496 continue; 3497 3498 chanctx_conf = sdata_dereference(link->conf->chanctx_conf, 3499 sdata); 3500 if (ctx && &ctx->conf != chanctx_conf) 3501 continue; 3502 3503 wiphy_delayed_work_cancel(local->hw.wiphy, 3504 &link->dfs_cac_timer_work); 3505 3506 if (!sdata->wdev.links[link_id].cac_started) 3507 continue; 3508 3509 chandef = link->conf->chanreq.oper; 3510 ieee80211_link_release_channel(link); 3511 cfg80211_cac_event(sdata->dev, &chandef, 3512 NL80211_RADAR_CAC_ABORTED, 3513 GFP_KERNEL, link_id); 3514 } 3515 } 3516 } 3517 3518 void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy, 3519 struct wiphy_work *work) 3520 { 3521 struct ieee80211_local *local = 3522 container_of(work, struct ieee80211_local, radar_detected_work); 3523 struct cfg80211_chan_def chandef; 3524 struct ieee80211_chanctx *ctx; 3525 3526 lockdep_assert_wiphy(local->hw.wiphy); 3527 3528 list_for_each_entry(ctx, &local->chanctx_list, list) { 3529 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) 3530 continue; 3531 3532 if (!ctx->radar_detected) 3533 continue; 3534 3535 ctx->radar_detected = false; 3536 3537 chandef = ctx->conf.def; 3538 3539 ieee80211_dfs_cac_cancel(local, ctx); 3540 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); 3541 } 3542 } 3543 3544 static void 3545 ieee80211_radar_mark_chan_ctx_iterator(struct ieee80211_hw *hw, 3546 struct ieee80211_chanctx_conf *chanctx_conf, 3547 void *data) 3548 { 3549 struct ieee80211_chanctx *ctx = 3550 container_of(chanctx_conf, struct ieee80211_chanctx, 3551 conf); 3552 3553 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) 3554 return; 3555 3556 if (data && data != chanctx_conf) 3557 return; 3558 3559 ctx->radar_detected = true; 3560 } 3561 3562 void ieee80211_radar_detected(struct ieee80211_hw *hw, 3563 struct ieee80211_chanctx_conf *chanctx_conf) 3564 { 3565 struct ieee80211_local *local = hw_to_local(hw); 3566 3567 trace_api_radar_detected(local); 3568 3569 ieee80211_iter_chan_contexts_atomic(hw, ieee80211_radar_mark_chan_ctx_iterator, 3570 chanctx_conf); 3571 3572 wiphy_work_queue(hw->wiphy, &local->radar_detected_work); 3573 } 3574 EXPORT_SYMBOL(ieee80211_radar_detected); 3575 3576 void ieee80211_chandef_downgrade(struct cfg80211_chan_def *c, 3577 struct ieee80211_conn_settings *conn) 3578 { 3579 enum nl80211_chan_width new_primary_width; 3580 struct ieee80211_conn_settings _ignored = {}; 3581 3582 /* allow passing NULL if caller doesn't care */ 3583 if (!conn) 3584 conn = &_ignored; 3585 3586 again: 3587 /* no-HT indicates nothing to do */ 3588 new_primary_width = NL80211_CHAN_WIDTH_20_NOHT; 3589 3590 switch (c->width) { 3591 default: 3592 case NL80211_CHAN_WIDTH_20_NOHT: 3593 WARN_ON_ONCE(1); 3594 fallthrough; 3595 case NL80211_CHAN_WIDTH_20: 3596 c->width = NL80211_CHAN_WIDTH_20_NOHT; 3597 conn->mode = IEEE80211_CONN_MODE_LEGACY; 3598 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3599 c->punctured = 0; 3600 break; 3601 case NL80211_CHAN_WIDTH_40: 3602 c->width = NL80211_CHAN_WIDTH_20; 3603 c->center_freq1 = c->chan->center_freq; 3604 if (conn->mode == IEEE80211_CONN_MODE_VHT) 3605 conn->mode = IEEE80211_CONN_MODE_HT; 3606 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3607 c->punctured = 0; 3608 break; 3609 case NL80211_CHAN_WIDTH_80: 3610 new_primary_width = NL80211_CHAN_WIDTH_40; 3611 if (conn->mode == IEEE80211_CONN_MODE_VHT) 3612 conn->mode = IEEE80211_CONN_MODE_HT; 3613 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_40; 3614 break; 3615 case NL80211_CHAN_WIDTH_80P80: 3616 c->center_freq2 = 0; 3617 c->width = NL80211_CHAN_WIDTH_80; 3618 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80; 3619 break; 3620 case NL80211_CHAN_WIDTH_160: 3621 new_primary_width = NL80211_CHAN_WIDTH_80; 3622 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80; 3623 break; 3624 case NL80211_CHAN_WIDTH_320: 3625 new_primary_width = NL80211_CHAN_WIDTH_160; 3626 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_160; 3627 break; 3628 case NL80211_CHAN_WIDTH_1: 3629 case NL80211_CHAN_WIDTH_2: 3630 case NL80211_CHAN_WIDTH_4: 3631 case NL80211_CHAN_WIDTH_8: 3632 case NL80211_CHAN_WIDTH_16: 3633 WARN_ON_ONCE(1); 3634 /* keep c->width */ 3635 conn->mode = IEEE80211_CONN_MODE_S1G; 3636 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3637 break; 3638 case NL80211_CHAN_WIDTH_5: 3639 case NL80211_CHAN_WIDTH_10: 3640 WARN_ON_ONCE(1); 3641 /* keep c->width */ 3642 conn->mode = IEEE80211_CONN_MODE_LEGACY; 3643 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3644 break; 3645 } 3646 3647 if (new_primary_width != NL80211_CHAN_WIDTH_20_NOHT) { 3648 c->center_freq1 = cfg80211_chandef_primary(c, new_primary_width, 3649 &c->punctured); 3650 c->width = new_primary_width; 3651 } 3652 3653 /* 3654 * With an 80 MHz channel, we might have the puncturing in the primary 3655 * 40 Mhz channel, but that's not valid when downgraded to 40 MHz width. 3656 * In that case, downgrade again. 3657 */ 3658 if (!cfg80211_chandef_valid(c) && c->punctured) 3659 goto again; 3660 3661 WARN_ON_ONCE(!cfg80211_chandef_valid(c)); 3662 } 3663 3664 /* 3665 * Returns true if smps_mode_new is strictly more restrictive than 3666 * smps_mode_old. 3667 */ 3668 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 3669 enum ieee80211_smps_mode smps_mode_new) 3670 { 3671 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || 3672 smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) 3673 return false; 3674 3675 switch (smps_mode_old) { 3676 case IEEE80211_SMPS_STATIC: 3677 return false; 3678 case IEEE80211_SMPS_DYNAMIC: 3679 return smps_mode_new == IEEE80211_SMPS_STATIC; 3680 case IEEE80211_SMPS_OFF: 3681 return smps_mode_new != IEEE80211_SMPS_OFF; 3682 default: 3683 WARN_ON(1); 3684 } 3685 3686 return false; 3687 } 3688 3689 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 3690 struct cfg80211_csa_settings *csa_settings) 3691 { 3692 struct sk_buff *skb; 3693 struct ieee80211_mgmt *mgmt; 3694 struct ieee80211_local *local = sdata->local; 3695 int freq; 3696 int hdr_len = offsetofend(struct ieee80211_mgmt, 3697 u.action.u.chan_switch); 3698 u8 *pos; 3699 3700 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3701 sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 3702 return -EOPNOTSUPP; 3703 3704 skb = dev_alloc_skb(local->tx_headroom + hdr_len + 3705 5 + /* channel switch announcement element */ 3706 3 + /* secondary channel offset element */ 3707 5 + /* wide bandwidth channel switch announcement */ 3708 8); /* mesh channel switch parameters element */ 3709 if (!skb) 3710 return -ENOMEM; 3711 3712 skb_reserve(skb, local->tx_headroom); 3713 mgmt = skb_put_zero(skb, hdr_len); 3714 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3715 IEEE80211_STYPE_ACTION); 3716 3717 eth_broadcast_addr(mgmt->da); 3718 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3719 if (ieee80211_vif_is_mesh(&sdata->vif)) { 3720 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); 3721 } else { 3722 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 3723 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 3724 } 3725 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; 3726 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; 3727 pos = skb_put(skb, 5); 3728 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ 3729 *pos++ = 3; /* IE length */ 3730 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ 3731 freq = csa_settings->chandef.chan->center_freq; 3732 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ 3733 *pos++ = csa_settings->count; /* count */ 3734 3735 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { 3736 enum nl80211_channel_type ch_type; 3737 3738 skb_put(skb, 3); 3739 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ 3740 *pos++ = 1; /* IE length */ 3741 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); 3742 if (ch_type == NL80211_CHAN_HT40PLUS) 3743 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 3744 else 3745 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 3746 } 3747 3748 if (ieee80211_vif_is_mesh(&sdata->vif)) { 3749 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3750 3751 skb_put(skb, 8); 3752 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ 3753 *pos++ = 6; /* IE length */ 3754 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ 3755 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ 3756 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; 3757 *pos++ |= csa_settings->block_tx ? 3758 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; 3759 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ 3760 pos += 2; 3761 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ 3762 pos += 2; 3763 } 3764 3765 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 || 3766 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 || 3767 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) { 3768 skb_put(skb, 5); 3769 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef); 3770 } 3771 3772 ieee80211_tx_skb(sdata, skb); 3773 return 0; 3774 } 3775 3776 static bool 3777 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) 3778 { 3779 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); 3780 int skip; 3781 3782 if (end > 0) 3783 return false; 3784 3785 /* One shot NOA */ 3786 if (data->count[i] == 1) 3787 return false; 3788 3789 if (data->desc[i].interval == 0) 3790 return false; 3791 3792 /* End time is in the past, check for repetitions */ 3793 skip = DIV_ROUND_UP(-end, data->desc[i].interval); 3794 if (data->count[i] < 255) { 3795 if (data->count[i] <= skip) { 3796 data->count[i] = 0; 3797 return false; 3798 } 3799 3800 data->count[i] -= skip; 3801 } 3802 3803 data->desc[i].start += skip * data->desc[i].interval; 3804 3805 return true; 3806 } 3807 3808 static bool 3809 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, 3810 s32 *offset) 3811 { 3812 bool ret = false; 3813 int i; 3814 3815 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3816 s32 cur; 3817 3818 if (!data->count[i]) 3819 continue; 3820 3821 if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) 3822 ret = true; 3823 3824 cur = data->desc[i].start - tsf; 3825 if (cur > *offset) 3826 continue; 3827 3828 cur = data->desc[i].start + data->desc[i].duration - tsf; 3829 if (cur > *offset) 3830 *offset = cur; 3831 } 3832 3833 return ret; 3834 } 3835 3836 static u32 3837 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) 3838 { 3839 s32 offset = 0; 3840 int tries = 0; 3841 /* 3842 * arbitrary limit, used to avoid infinite loops when combined NoA 3843 * descriptors cover the full time period. 3844 */ 3845 int max_tries = 5; 3846 3847 ieee80211_extend_absent_time(data, tsf, &offset); 3848 do { 3849 if (!ieee80211_extend_absent_time(data, tsf, &offset)) 3850 break; 3851 3852 tries++; 3853 } while (tries < max_tries); 3854 3855 return offset; 3856 } 3857 3858 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) 3859 { 3860 u32 next_offset = BIT(31) - 1; 3861 int i; 3862 3863 data->absent = 0; 3864 data->has_next_tsf = false; 3865 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3866 s32 start; 3867 3868 if (!data->count[i]) 3869 continue; 3870 3871 ieee80211_extend_noa_desc(data, tsf, i); 3872 start = data->desc[i].start - tsf; 3873 if (start <= 0) 3874 data->absent |= BIT(i); 3875 3876 if (next_offset > start) 3877 next_offset = start; 3878 3879 data->has_next_tsf = true; 3880 } 3881 3882 if (data->absent) 3883 next_offset = ieee80211_get_noa_absent_time(data, tsf); 3884 3885 data->next_tsf = tsf + next_offset; 3886 } 3887 EXPORT_SYMBOL(ieee80211_update_p2p_noa); 3888 3889 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, 3890 struct ieee80211_noa_data *data, u32 tsf) 3891 { 3892 int ret = 0; 3893 int i; 3894 3895 memset(data, 0, sizeof(*data)); 3896 3897 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3898 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; 3899 3900 if (!desc->count || !desc->duration) 3901 continue; 3902 3903 data->count[i] = desc->count; 3904 data->desc[i].start = le32_to_cpu(desc->start_time); 3905 data->desc[i].duration = le32_to_cpu(desc->duration); 3906 data->desc[i].interval = le32_to_cpu(desc->interval); 3907 3908 if (data->count[i] > 1 && 3909 data->desc[i].interval < data->desc[i].duration) 3910 continue; 3911 3912 ieee80211_extend_noa_desc(data, tsf, i); 3913 ret++; 3914 } 3915 3916 if (ret) 3917 ieee80211_update_p2p_noa(data, tsf); 3918 3919 return ret; 3920 } 3921 EXPORT_SYMBOL(ieee80211_parse_p2p_noa); 3922 3923 void ieee80211_recalc_dtim(struct ieee80211_local *local, 3924 struct ieee80211_sub_if_data *sdata) 3925 { 3926 u64 tsf = drv_get_tsf(local, sdata); 3927 u64 dtim_count = 0; 3928 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; 3929 u8 dtim_period = sdata->vif.bss_conf.dtim_period; 3930 struct ps_data *ps; 3931 u8 bcns_from_dtim; 3932 3933 if (tsf == -1ULL || !beacon_int || !dtim_period) 3934 return; 3935 3936 if (sdata->vif.type == NL80211_IFTYPE_AP || 3937 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { 3938 if (!sdata->bss) 3939 return; 3940 3941 ps = &sdata->bss->ps; 3942 } else if (ieee80211_vif_is_mesh(&sdata->vif)) { 3943 ps = &sdata->u.mesh.ps; 3944 } else { 3945 return; 3946 } 3947 3948 /* 3949 * actually finds last dtim_count, mac80211 will update in 3950 * __beacon_add_tim(). 3951 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period 3952 */ 3953 do_div(tsf, beacon_int); 3954 bcns_from_dtim = do_div(tsf, dtim_period); 3955 /* just had a DTIM */ 3956 if (!bcns_from_dtim) 3957 dtim_count = 0; 3958 else 3959 dtim_count = dtim_period - bcns_from_dtim; 3960 3961 ps->dtim_count = dtim_count; 3962 } 3963 3964 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, 3965 struct ieee80211_chanctx *ctx) 3966 { 3967 struct ieee80211_link_data *link; 3968 u8 radar_detect = 0; 3969 3970 lockdep_assert_wiphy(local->hw.wiphy); 3971 3972 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) 3973 return 0; 3974 3975 list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list) 3976 if (link->reserved_radar_required) 3977 radar_detect |= BIT(link->reserved.oper.width); 3978 3979 /* 3980 * An in-place reservation context should not have any assigned vifs 3981 * until it replaces the other context. 3982 */ 3983 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER && 3984 !list_empty(&ctx->assigned_links)); 3985 3986 list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) { 3987 if (!link->radar_required) 3988 continue; 3989 3990 radar_detect |= 3991 BIT(link->conf->chanreq.oper.width); 3992 } 3993 3994 return radar_detect; 3995 } 3996 3997 static u32 3998 __ieee80211_get_radio_mask(struct ieee80211_sub_if_data *sdata) 3999 { 4000 struct ieee80211_bss_conf *link_conf; 4001 struct ieee80211_chanctx_conf *conf; 4002 unsigned int link_id; 4003 u32 mask = 0; 4004 4005 for_each_vif_active_link(&sdata->vif, link_conf, link_id) { 4006 conf = sdata_dereference(link_conf->chanctx_conf, sdata); 4007 if (!conf || conf->radio_idx < 0) 4008 continue; 4009 4010 mask |= BIT(conf->radio_idx); 4011 } 4012 4013 return mask; 4014 } 4015 4016 u32 ieee80211_get_radio_mask(struct wiphy *wiphy, struct net_device *dev) 4017 { 4018 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 4019 4020 return __ieee80211_get_radio_mask(sdata); 4021 } 4022 4023 static bool 4024 ieee80211_sdata_uses_radio(struct ieee80211_sub_if_data *sdata, int radio_idx) 4025 { 4026 if (radio_idx < 0) 4027 return true; 4028 4029 return __ieee80211_get_radio_mask(sdata) & BIT(radio_idx); 4030 } 4031 4032 static int 4033 ieee80211_fill_ifcomb_params(struct ieee80211_local *local, 4034 struct iface_combination_params *params, 4035 const struct cfg80211_chan_def *chandef, 4036 struct ieee80211_sub_if_data *sdata) 4037 { 4038 struct ieee80211_sub_if_data *sdata_iter; 4039 struct ieee80211_chanctx *ctx; 4040 int total = !!sdata; 4041 4042 list_for_each_entry(ctx, &local->chanctx_list, list) { 4043 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 4044 continue; 4045 4046 if (params->radio_idx >= 0 && 4047 ctx->conf.radio_idx != params->radio_idx) 4048 continue; 4049 4050 params->radar_detect |= 4051 ieee80211_chanctx_radar_detect(local, ctx); 4052 4053 if (chandef && ctx->mode != IEEE80211_CHANCTX_EXCLUSIVE && 4054 cfg80211_chandef_compatible(chandef, &ctx->conf.def)) 4055 continue; 4056 4057 params->num_different_channels++; 4058 } 4059 4060 list_for_each_entry(sdata_iter, &local->interfaces, list) { 4061 struct wireless_dev *wdev_iter; 4062 4063 wdev_iter = &sdata_iter->wdev; 4064 4065 if (sdata_iter == sdata || 4066 !ieee80211_sdata_running(sdata_iter) || 4067 cfg80211_iftype_allowed(local->hw.wiphy, 4068 wdev_iter->iftype, 0, 1)) 4069 continue; 4070 4071 if (!ieee80211_sdata_uses_radio(sdata_iter, params->radio_idx)) 4072 continue; 4073 4074 params->iftype_num[wdev_iter->iftype]++; 4075 total++; 4076 } 4077 4078 return total; 4079 } 4080 4081 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 4082 const struct cfg80211_chan_def *chandef, 4083 enum ieee80211_chanctx_mode chanmode, 4084 u8 radar_detect, int radio_idx) 4085 { 4086 bool shared = chanmode == IEEE80211_CHANCTX_SHARED; 4087 struct ieee80211_local *local = sdata->local; 4088 enum nl80211_iftype iftype = sdata->wdev.iftype; 4089 struct iface_combination_params params = { 4090 .radar_detect = radar_detect, 4091 .radio_idx = radio_idx, 4092 }; 4093 int total; 4094 4095 lockdep_assert_wiphy(local->hw.wiphy); 4096 4097 if (WARN_ON(hweight32(radar_detect) > 1)) 4098 return -EINVAL; 4099 4100 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && 4101 !chandef->chan)) 4102 return -EINVAL; 4103 4104 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) 4105 return -EINVAL; 4106 4107 if (sdata->vif.type == NL80211_IFTYPE_AP || 4108 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) { 4109 /* 4110 * always passing this is harmless, since it'll be the 4111 * same value that cfg80211 finds if it finds the same 4112 * interface ... and that's always allowed 4113 */ 4114 params.new_beacon_int = sdata->vif.bss_conf.beacon_int; 4115 } 4116 4117 /* Always allow software iftypes */ 4118 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) { 4119 if (radar_detect) 4120 return -EINVAL; 4121 return 0; 4122 } 4123 4124 if (chandef) 4125 params.num_different_channels = 1; 4126 4127 if (iftype != NL80211_IFTYPE_UNSPECIFIED) 4128 params.iftype_num[iftype] = 1; 4129 4130 total = ieee80211_fill_ifcomb_params(local, ¶ms, 4131 shared ? chandef : NULL, 4132 sdata); 4133 if (total == 1 && !params.radar_detect) 4134 return 0; 4135 4136 return cfg80211_check_combinations(local->hw.wiphy, ¶ms); 4137 } 4138 4139 static void 4140 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, 4141 void *data) 4142 { 4143 u32 *max_num_different_channels = data; 4144 4145 *max_num_different_channels = max(*max_num_different_channels, 4146 c->num_different_channels); 4147 } 4148 4149 int ieee80211_max_num_channels(struct ieee80211_local *local, int radio_idx) 4150 { 4151 u32 max_num_different_channels = 1; 4152 int err; 4153 struct iface_combination_params params = { 4154 .radio_idx = radio_idx, 4155 }; 4156 4157 lockdep_assert_wiphy(local->hw.wiphy); 4158 4159 ieee80211_fill_ifcomb_params(local, ¶ms, NULL, NULL); 4160 4161 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms, 4162 ieee80211_iter_max_chans, 4163 &max_num_different_channels); 4164 if (err < 0) 4165 return err; 4166 4167 return max_num_different_channels; 4168 } 4169 4170 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 4171 struct ieee80211_sta_s1g_cap *caps, 4172 struct sk_buff *skb) 4173 { 4174 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4175 struct ieee80211_s1g_cap s1g_capab; 4176 u8 *pos; 4177 int i; 4178 4179 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 4180 return; 4181 4182 if (!caps->s1g) 4183 return; 4184 4185 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap)); 4186 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs)); 4187 4188 /* override the capability info */ 4189 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) { 4190 u8 mask = ifmgd->s1g_capa_mask.capab_info[i]; 4191 4192 s1g_capab.capab_info[i] &= ~mask; 4193 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask; 4194 } 4195 4196 /* then MCS and NSS set */ 4197 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) { 4198 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i]; 4199 4200 s1g_capab.supp_mcs_nss[i] &= ~mask; 4201 s1g_capab.supp_mcs_nss[i] |= 4202 ifmgd->s1g_capa.supp_mcs_nss[i] & mask; 4203 } 4204 4205 pos = skb_put(skb, 2 + sizeof(s1g_capab)); 4206 *pos++ = WLAN_EID_S1G_CAPABILITIES; 4207 *pos++ = sizeof(s1g_capab); 4208 4209 memcpy(pos, &s1g_capab, sizeof(s1g_capab)); 4210 } 4211 4212 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 4213 struct sk_buff *skb) 4214 { 4215 u8 *pos = skb_put(skb, 3); 4216 4217 *pos++ = WLAN_EID_AID_REQUEST; 4218 *pos++ = 1; 4219 *pos++ = 0; 4220 } 4221 4222 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) 4223 { 4224 *buf++ = WLAN_EID_VENDOR_SPECIFIC; 4225 *buf++ = 7; /* len */ 4226 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ 4227 *buf++ = 0x50; 4228 *buf++ = 0xf2; 4229 *buf++ = 2; /* WME */ 4230 *buf++ = 0; /* WME info */ 4231 *buf++ = 1; /* WME ver */ 4232 *buf++ = qosinfo; /* U-APSD no in use */ 4233 4234 return buf; 4235 } 4236 4237 void ieee80211_txq_get_depth(struct ieee80211_txq *txq, 4238 unsigned long *frame_cnt, 4239 unsigned long *byte_cnt) 4240 { 4241 struct txq_info *txqi = to_txq_info(txq); 4242 u32 frag_cnt = 0, frag_bytes = 0; 4243 struct sk_buff *skb; 4244 4245 skb_queue_walk(&txqi->frags, skb) { 4246 frag_cnt++; 4247 frag_bytes += skb->len; 4248 } 4249 4250 if (frame_cnt) 4251 *frame_cnt = txqi->tin.backlog_packets + frag_cnt; 4252 4253 if (byte_cnt) 4254 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes; 4255 } 4256 EXPORT_SYMBOL(ieee80211_txq_get_depth); 4257 4258 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = { 4259 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO, 4260 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI, 4261 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE, 4262 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK 4263 }; 4264 4265 u16 ieee80211_encode_usf(int listen_interval) 4266 { 4267 static const int listen_int_usf[] = { 1, 10, 1000, 10000 }; 4268 u16 ui, usf = 0; 4269 4270 /* find greatest USF */ 4271 while (usf < IEEE80211_MAX_USF) { 4272 if (listen_interval % listen_int_usf[usf + 1]) 4273 break; 4274 usf += 1; 4275 } 4276 ui = listen_interval / listen_int_usf[usf]; 4277 4278 /* error if there is a remainder. Should've been checked by user */ 4279 WARN_ON_ONCE(ui > IEEE80211_MAX_UI); 4280 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) | 4281 FIELD_PREP(LISTEN_INT_UI, ui); 4282 4283 return (u16) listen_interval; 4284 } 4285 4286 /* this may return more than ieee80211_put_eht_cap() will need */ 4287 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata) 4288 { 4289 const struct ieee80211_sta_he_cap *he_cap; 4290 const struct ieee80211_sta_eht_cap *eht_cap; 4291 struct ieee80211_supported_band *sband; 4292 bool is_ap; 4293 u8 n; 4294 4295 sband = ieee80211_get_sband(sdata); 4296 if (!sband) 4297 return 0; 4298 4299 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 4300 eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); 4301 if (!he_cap || !eht_cap) 4302 return 0; 4303 4304 is_ap = sdata->vif.type == NL80211_IFTYPE_AP; 4305 4306 n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 4307 &eht_cap->eht_cap_elem, 4308 is_ap); 4309 return 2 + 1 + 4310 sizeof(eht_cap->eht_cap_elem) + n + 4311 ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], 4312 eht_cap->eht_cap_elem.phy_cap_info); 4313 return 0; 4314 } 4315 4316 int ieee80211_put_eht_cap(struct sk_buff *skb, 4317 struct ieee80211_sub_if_data *sdata, 4318 const struct ieee80211_supported_band *sband, 4319 const struct ieee80211_conn_settings *conn) 4320 { 4321 const struct ieee80211_sta_he_cap *he_cap = 4322 ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 4323 const struct ieee80211_sta_eht_cap *eht_cap = 4324 ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); 4325 bool for_ap = sdata->vif.type == NL80211_IFTYPE_AP; 4326 struct ieee80211_eht_cap_elem_fixed fixed; 4327 struct ieee80211_he_cap_elem he; 4328 u8 mcs_nss_len, ppet_len; 4329 u8 orig_mcs_nss_len; 4330 u8 ie_len; 4331 4332 if (!conn) 4333 conn = &ieee80211_conn_settings_unlimited; 4334 4335 /* Make sure we have place for the IE */ 4336 if (!he_cap || !eht_cap) 4337 return 0; 4338 4339 orig_mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 4340 &eht_cap->eht_cap_elem, 4341 for_ap); 4342 4343 ieee80211_get_adjusted_he_cap(conn, he_cap, &he); 4344 4345 fixed = eht_cap->eht_cap_elem; 4346 4347 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_80) 4348 fixed.phy_cap_info[6] &= 4349 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_80MHZ; 4350 4351 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) { 4352 fixed.phy_cap_info[1] &= 4353 ~IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK; 4354 fixed.phy_cap_info[2] &= 4355 ~IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK; 4356 fixed.phy_cap_info[6] &= 4357 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_160MHZ; 4358 } 4359 4360 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_320) { 4361 fixed.phy_cap_info[0] &= 4362 ~IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ; 4363 fixed.phy_cap_info[1] &= 4364 ~IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK; 4365 fixed.phy_cap_info[2] &= 4366 ~IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK; 4367 fixed.phy_cap_info[6] &= 4368 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_320MHZ; 4369 } 4370 4371 if (conn->bw_limit == IEEE80211_CONN_BW_LIMIT_20) 4372 fixed.phy_cap_info[0] &= 4373 ~IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ; 4374 4375 mcs_nss_len = ieee80211_eht_mcs_nss_size(&he, &fixed, for_ap); 4376 ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], 4377 fixed.phy_cap_info); 4378 4379 ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len; 4380 if (skb_tailroom(skb) < ie_len) 4381 return -ENOBUFS; 4382 4383 skb_put_u8(skb, WLAN_EID_EXTENSION); 4384 skb_put_u8(skb, ie_len - 2); 4385 skb_put_u8(skb, WLAN_EID_EXT_EHT_CAPABILITY); 4386 skb_put_data(skb, &fixed, sizeof(fixed)); 4387 4388 if (mcs_nss_len == 4 && orig_mcs_nss_len != 4) { 4389 /* 4390 * If the (non-AP) STA became 20 MHz only, then convert from 4391 * <=80 to 20-MHz-only format, where MCSes are indicated in 4392 * the groups 0-7, 8-9, 10-11, 12-13 rather than just 0-9, 4393 * 10-11, 12-13. Thus, use 0-9 for 0-7 and 8-9. 4394 */ 4395 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss); 4396 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss); 4397 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs11_max_nss); 4398 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs13_max_nss); 4399 } else { 4400 skb_put_data(skb, &eht_cap->eht_mcs_nss_supp, mcs_nss_len); 4401 } 4402 4403 if (ppet_len) 4404 skb_put_data(skb, &eht_cap->eht_ppe_thres, ppet_len); 4405 4406 return 0; 4407 } 4408 4409 const char *ieee80211_conn_mode_str(enum ieee80211_conn_mode mode) 4410 { 4411 static const char * const modes[] = { 4412 [IEEE80211_CONN_MODE_S1G] = "S1G", 4413 [IEEE80211_CONN_MODE_LEGACY] = "legacy", 4414 [IEEE80211_CONN_MODE_HT] = "HT", 4415 [IEEE80211_CONN_MODE_VHT] = "VHT", 4416 [IEEE80211_CONN_MODE_HE] = "HE", 4417 [IEEE80211_CONN_MODE_EHT] = "EHT", 4418 }; 4419 4420 if (WARN_ON(mode >= ARRAY_SIZE(modes))) 4421 return "<out of range>"; 4422 4423 return modes[mode] ?: "<missing string>"; 4424 } 4425 4426 enum ieee80211_conn_bw_limit 4427 ieee80211_min_bw_limit_from_chandef(struct cfg80211_chan_def *chandef) 4428 { 4429 switch (chandef->width) { 4430 case NL80211_CHAN_WIDTH_20_NOHT: 4431 case NL80211_CHAN_WIDTH_20: 4432 return IEEE80211_CONN_BW_LIMIT_20; 4433 case NL80211_CHAN_WIDTH_40: 4434 return IEEE80211_CONN_BW_LIMIT_40; 4435 case NL80211_CHAN_WIDTH_80: 4436 return IEEE80211_CONN_BW_LIMIT_80; 4437 case NL80211_CHAN_WIDTH_80P80: 4438 case NL80211_CHAN_WIDTH_160: 4439 return IEEE80211_CONN_BW_LIMIT_160; 4440 case NL80211_CHAN_WIDTH_320: 4441 return IEEE80211_CONN_BW_LIMIT_320; 4442 default: 4443 WARN(1, "unhandled chandef width %d\n", chandef->width); 4444 return IEEE80211_CONN_BW_LIMIT_20; 4445 } 4446 } 4447 4448 void ieee80211_clear_tpe(struct ieee80211_parsed_tpe *tpe) 4449 { 4450 for (int i = 0; i < 2; i++) { 4451 tpe->max_local[i].valid = false; 4452 memset(tpe->max_local[i].power, 4453 IEEE80211_TPE_MAX_TX_PWR_NO_CONSTRAINT, 4454 sizeof(tpe->max_local[i].power)); 4455 4456 tpe->max_reg_client[i].valid = false; 4457 memset(tpe->max_reg_client[i].power, 4458 IEEE80211_TPE_MAX_TX_PWR_NO_CONSTRAINT, 4459 sizeof(tpe->max_reg_client[i].power)); 4460 4461 tpe->psd_local[i].valid = false; 4462 memset(tpe->psd_local[i].power, 4463 IEEE80211_TPE_PSD_NO_LIMIT, 4464 sizeof(tpe->psd_local[i].power)); 4465 4466 tpe->psd_reg_client[i].valid = false; 4467 memset(tpe->psd_reg_client[i].power, 4468 IEEE80211_TPE_PSD_NO_LIMIT, 4469 sizeof(tpe->psd_reg_client[i].power)); 4470 } 4471 } 4472