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 switch (sdata->vif.type) { 756 case NL80211_IFTYPE_MONITOR: 757 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) 758 continue; 759 break; 760 case NL80211_IFTYPE_AP_VLAN: 761 continue; 762 default: 763 break; 764 } 765 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) && 766 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 767 continue; 768 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) && 769 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 770 continue; 771 if (ieee80211_sdata_running(sdata) || !active_only) 772 iterator(data, sdata->vif.addr, 773 &sdata->vif); 774 } 775 776 sdata = rcu_dereference_check(local->monitor_sdata, 777 lockdep_is_held(&local->iflist_mtx) || 778 lockdep_is_held(&local->hw.wiphy->mtx)); 779 if (sdata && 780 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only || 781 sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 782 iterator(data, sdata->vif.addr, &sdata->vif); 783 } 784 785 void ieee80211_iterate_interfaces( 786 struct ieee80211_hw *hw, u32 iter_flags, 787 void (*iterator)(void *data, u8 *mac, 788 struct ieee80211_vif *vif), 789 void *data) 790 { 791 struct ieee80211_local *local = hw_to_local(hw); 792 793 mutex_lock(&local->iflist_mtx); 794 __iterate_interfaces(local, iter_flags, iterator, data); 795 mutex_unlock(&local->iflist_mtx); 796 } 797 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces); 798 799 void ieee80211_iterate_active_interfaces_atomic( 800 struct ieee80211_hw *hw, u32 iter_flags, 801 void (*iterator)(void *data, u8 *mac, 802 struct ieee80211_vif *vif), 803 void *data) 804 { 805 struct ieee80211_local *local = hw_to_local(hw); 806 807 rcu_read_lock(); 808 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 809 iterator, data); 810 rcu_read_unlock(); 811 } 812 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic); 813 814 void ieee80211_iterate_active_interfaces_mtx( 815 struct ieee80211_hw *hw, u32 iter_flags, 816 void (*iterator)(void *data, u8 *mac, 817 struct ieee80211_vif *vif), 818 void *data) 819 { 820 struct ieee80211_local *local = hw_to_local(hw); 821 822 lockdep_assert_wiphy(hw->wiphy); 823 824 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 825 iterator, data); 826 } 827 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx); 828 829 static void __iterate_stations(struct ieee80211_local *local, 830 void (*iterator)(void *data, 831 struct ieee80211_sta *sta), 832 void *data) 833 { 834 struct sta_info *sta; 835 836 list_for_each_entry_rcu(sta, &local->sta_list, list) { 837 if (!sta->uploaded) 838 continue; 839 840 iterator(data, &sta->sta); 841 } 842 } 843 844 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, 845 void (*iterator)(void *data, 846 struct ieee80211_sta *sta), 847 void *data) 848 { 849 struct ieee80211_local *local = hw_to_local(hw); 850 851 rcu_read_lock(); 852 __iterate_stations(local, iterator, data); 853 rcu_read_unlock(); 854 } 855 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic); 856 857 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev) 858 { 859 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 860 861 if (!ieee80211_sdata_running(sdata) || 862 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) 863 return NULL; 864 return &sdata->vif; 865 } 866 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif); 867 868 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif) 869 { 870 if (!vif) 871 return NULL; 872 873 return &vif_to_sdata(vif)->wdev; 874 } 875 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev); 876 877 /* 878 * Nothing should have been stuffed into the workqueue during 879 * the suspend->resume cycle. Since we can't check each caller 880 * of this function if we are already quiescing / suspended, 881 * check here and don't WARN since this can actually happen when 882 * the rx path (for example) is racing against __ieee80211_suspend 883 * and suspending / quiescing was set after the rx path checked 884 * them. 885 */ 886 static bool ieee80211_can_queue_work(struct ieee80211_local *local) 887 { 888 if (local->quiescing || (local->suspended && !local->resuming)) { 889 pr_warn("queueing ieee80211 work while going to suspend\n"); 890 return false; 891 } 892 893 return true; 894 } 895 896 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work) 897 { 898 struct ieee80211_local *local = hw_to_local(hw); 899 900 if (!ieee80211_can_queue_work(local)) 901 return; 902 903 queue_work(local->workqueue, work); 904 } 905 EXPORT_SYMBOL(ieee80211_queue_work); 906 907 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, 908 struct delayed_work *dwork, 909 unsigned long delay) 910 { 911 struct ieee80211_local *local = hw_to_local(hw); 912 913 if (!ieee80211_can_queue_work(local)) 914 return; 915 916 queue_delayed_work(local->workqueue, dwork, delay); 917 } 918 EXPORT_SYMBOL(ieee80211_queue_delayed_work); 919 920 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 921 struct ieee80211_tx_queue_params 922 *qparam, int ac) 923 { 924 struct ieee80211_chanctx_conf *chanctx_conf; 925 const struct ieee80211_reg_rule *rrule; 926 const struct ieee80211_wmm_ac *wmm_ac; 927 u16 center_freq = 0; 928 929 if (sdata->vif.type != NL80211_IFTYPE_AP && 930 sdata->vif.type != NL80211_IFTYPE_STATION) 931 return; 932 933 rcu_read_lock(); 934 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 935 if (chanctx_conf) 936 center_freq = chanctx_conf->def.chan->center_freq; 937 938 if (!center_freq) { 939 rcu_read_unlock(); 940 return; 941 } 942 943 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq)); 944 945 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) { 946 rcu_read_unlock(); 947 return; 948 } 949 950 if (sdata->vif.type == NL80211_IFTYPE_AP) 951 wmm_ac = &rrule->wmm_rule.ap[ac]; 952 else 953 wmm_ac = &rrule->wmm_rule.client[ac]; 954 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min); 955 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max); 956 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn); 957 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32); 958 rcu_read_unlock(); 959 } 960 961 void ieee80211_set_wmm_default(struct ieee80211_link_data *link, 962 bool bss_notify, bool enable_qos) 963 { 964 struct ieee80211_sub_if_data *sdata = link->sdata; 965 struct ieee80211_local *local = sdata->local; 966 struct ieee80211_tx_queue_params qparam; 967 struct ieee80211_chanctx_conf *chanctx_conf; 968 int ac; 969 bool use_11b; 970 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */ 971 int aCWmin, aCWmax; 972 973 if (!local->ops->conf_tx) 974 return; 975 976 if (local->hw.queues < IEEE80211_NUM_ACS) 977 return; 978 979 memset(&qparam, 0, sizeof(qparam)); 980 981 rcu_read_lock(); 982 chanctx_conf = rcu_dereference(link->conf->chanctx_conf); 983 use_11b = (chanctx_conf && 984 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) && 985 !link->operating_11g_mode; 986 rcu_read_unlock(); 987 988 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB); 989 990 /* Set defaults according to 802.11-2007 Table 7-37 */ 991 aCWmax = 1023; 992 if (use_11b) 993 aCWmin = 31; 994 else 995 aCWmin = 15; 996 997 /* Confiure old 802.11b/g medium access rules. */ 998 qparam.cw_max = aCWmax; 999 qparam.cw_min = aCWmin; 1000 qparam.txop = 0; 1001 qparam.aifs = 2; 1002 1003 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 1004 /* Update if QoS is enabled. */ 1005 if (enable_qos) { 1006 switch (ac) { 1007 case IEEE80211_AC_BK: 1008 qparam.cw_max = aCWmax; 1009 qparam.cw_min = aCWmin; 1010 qparam.txop = 0; 1011 if (is_ocb) 1012 qparam.aifs = 9; 1013 else 1014 qparam.aifs = 7; 1015 break; 1016 /* never happens but let's not leave undefined */ 1017 default: 1018 case IEEE80211_AC_BE: 1019 qparam.cw_max = aCWmax; 1020 qparam.cw_min = aCWmin; 1021 qparam.txop = 0; 1022 if (is_ocb) 1023 qparam.aifs = 6; 1024 else 1025 qparam.aifs = 3; 1026 break; 1027 case IEEE80211_AC_VI: 1028 qparam.cw_max = aCWmin; 1029 qparam.cw_min = (aCWmin + 1) / 2 - 1; 1030 if (is_ocb) 1031 qparam.txop = 0; 1032 else if (use_11b) 1033 qparam.txop = 6016/32; 1034 else 1035 qparam.txop = 3008/32; 1036 1037 if (is_ocb) 1038 qparam.aifs = 3; 1039 else 1040 qparam.aifs = 2; 1041 break; 1042 case IEEE80211_AC_VO: 1043 qparam.cw_max = (aCWmin + 1) / 2 - 1; 1044 qparam.cw_min = (aCWmin + 1) / 4 - 1; 1045 if (is_ocb) 1046 qparam.txop = 0; 1047 else if (use_11b) 1048 qparam.txop = 3264/32; 1049 else 1050 qparam.txop = 1504/32; 1051 qparam.aifs = 2; 1052 break; 1053 } 1054 } 1055 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac); 1056 1057 qparam.uapsd = false; 1058 1059 link->tx_conf[ac] = qparam; 1060 drv_conf_tx(local, link, ac, &qparam); 1061 } 1062 1063 if (sdata->vif.type != NL80211_IFTYPE_MONITOR && 1064 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && 1065 sdata->vif.type != NL80211_IFTYPE_NAN) { 1066 link->conf->qos = enable_qos; 1067 if (bss_notify) 1068 ieee80211_link_info_change_notify(sdata, link, 1069 BSS_CHANGED_QOS); 1070 } 1071 } 1072 1073 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1074 u16 transaction, u16 auth_alg, u16 status, 1075 const u8 *extra, size_t extra_len, const u8 *da, 1076 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx, 1077 u32 tx_flags) 1078 { 1079 struct ieee80211_local *local = sdata->local; 1080 struct sk_buff *skb; 1081 struct ieee80211_mgmt *mgmt; 1082 bool multi_link = ieee80211_vif_is_mld(&sdata->vif); 1083 struct { 1084 u8 id; 1085 u8 len; 1086 u8 ext_id; 1087 struct ieee80211_multi_link_elem ml; 1088 struct ieee80211_mle_basic_common_info basic; 1089 } __packed mle = { 1090 .id = WLAN_EID_EXTENSION, 1091 .len = sizeof(mle) - 2, 1092 .ext_id = WLAN_EID_EXT_EHT_MULTI_LINK, 1093 .ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC), 1094 .basic.len = sizeof(mle.basic), 1095 }; 1096 int err; 1097 1098 memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN); 1099 1100 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */ 1101 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN + 1102 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN + 1103 multi_link * sizeof(mle)); 1104 if (!skb) 1105 return; 1106 1107 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN); 1108 1109 mgmt = skb_put_zero(skb, 24 + 6); 1110 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 1111 IEEE80211_STYPE_AUTH); 1112 memcpy(mgmt->da, da, ETH_ALEN); 1113 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 1114 memcpy(mgmt->bssid, bssid, ETH_ALEN); 1115 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg); 1116 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); 1117 mgmt->u.auth.status_code = cpu_to_le16(status); 1118 if (extra) 1119 skb_put_data(skb, extra, extra_len); 1120 if (multi_link) 1121 skb_put_data(skb, &mle, sizeof(mle)); 1122 1123 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) { 1124 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 1125 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx); 1126 if (WARN_ON(err)) { 1127 kfree_skb(skb); 1128 return; 1129 } 1130 } 1131 1132 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | 1133 tx_flags; 1134 ieee80211_tx_skb(sdata, skb); 1135 } 1136 1137 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1138 const u8 *da, const u8 *bssid, 1139 u16 stype, u16 reason, 1140 bool send_frame, u8 *frame_buf) 1141 { 1142 struct ieee80211_local *local = sdata->local; 1143 struct sk_buff *skb; 1144 struct ieee80211_mgmt *mgmt = (void *)frame_buf; 1145 1146 /* build frame */ 1147 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); 1148 mgmt->duration = 0; /* initialize only */ 1149 mgmt->seq_ctrl = 0; /* initialize only */ 1150 memcpy(mgmt->da, da, ETH_ALEN); 1151 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 1152 memcpy(mgmt->bssid, bssid, ETH_ALEN); 1153 /* u.deauth.reason_code == u.disassoc.reason_code */ 1154 mgmt->u.deauth.reason_code = cpu_to_le16(reason); 1155 1156 if (send_frame) { 1157 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 1158 IEEE80211_DEAUTH_FRAME_LEN); 1159 if (!skb) 1160 return; 1161 1162 skb_reserve(skb, local->hw.extra_tx_headroom); 1163 1164 /* copy in frame */ 1165 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN); 1166 1167 if (sdata->vif.type != NL80211_IFTYPE_STATION || 1168 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED)) 1169 IEEE80211_SKB_CB(skb)->flags |= 1170 IEEE80211_TX_INTFL_DONT_ENCRYPT; 1171 1172 ieee80211_tx_skb(sdata, skb); 1173 } 1174 } 1175 1176 static int ieee80211_put_s1g_cap(struct sk_buff *skb, 1177 struct ieee80211_sta_s1g_cap *s1g_cap) 1178 { 1179 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_s1g_cap)) 1180 return -ENOBUFS; 1181 1182 skb_put_u8(skb, WLAN_EID_S1G_CAPABILITIES); 1183 skb_put_u8(skb, sizeof(struct ieee80211_s1g_cap)); 1184 1185 skb_put_data(skb, &s1g_cap->cap, sizeof(s1g_cap->cap)); 1186 skb_put_data(skb, &s1g_cap->nss_mcs, sizeof(s1g_cap->nss_mcs)); 1187 1188 return 0; 1189 } 1190 1191 static int ieee80211_put_preq_ies_band(struct sk_buff *skb, 1192 struct ieee80211_sub_if_data *sdata, 1193 const u8 *ie, size_t ie_len, 1194 size_t *offset, 1195 enum nl80211_band band, 1196 u32 rate_mask, 1197 struct cfg80211_chan_def *chandef, 1198 u32 flags) 1199 { 1200 struct ieee80211_local *local = sdata->local; 1201 struct ieee80211_supported_band *sband; 1202 int i, err; 1203 size_t noffset; 1204 u32 rate_flags; 1205 bool have_80mhz = false; 1206 1207 *offset = 0; 1208 1209 sband = local->hw.wiphy->bands[band]; 1210 if (WARN_ON_ONCE(!sband)) 1211 return 0; 1212 1213 rate_flags = ieee80211_chandef_rate_flags(chandef); 1214 1215 /* For direct scan add S1G IE and consider its override bits */ 1216 if (band == NL80211_BAND_S1GHZ) 1217 return ieee80211_put_s1g_cap(skb, &sband->s1g_cap); 1218 1219 err = ieee80211_put_srates_elem(skb, sband, 0, rate_flags, 1220 ~rate_mask, WLAN_EID_SUPP_RATES); 1221 if (err) 1222 return err; 1223 1224 /* insert "request information" if in custom IEs */ 1225 if (ie && ie_len) { 1226 static const u8 before_extrates[] = { 1227 WLAN_EID_SSID, 1228 WLAN_EID_SUPP_RATES, 1229 WLAN_EID_REQUEST, 1230 }; 1231 noffset = ieee80211_ie_split(ie, ie_len, 1232 before_extrates, 1233 ARRAY_SIZE(before_extrates), 1234 *offset); 1235 if (skb_tailroom(skb) < noffset - *offset) 1236 return -ENOBUFS; 1237 skb_put_data(skb, ie + *offset, noffset - *offset); 1238 *offset = noffset; 1239 } 1240 1241 err = ieee80211_put_srates_elem(skb, sband, 0, rate_flags, 1242 ~rate_mask, WLAN_EID_EXT_SUPP_RATES); 1243 if (err) 1244 return err; 1245 1246 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) { 1247 if (skb_tailroom(skb) < 3) 1248 return -ENOBUFS; 1249 skb_put_u8(skb, WLAN_EID_DS_PARAMS); 1250 skb_put_u8(skb, 1); 1251 skb_put_u8(skb, 1252 ieee80211_frequency_to_channel(chandef->chan->center_freq)); 1253 } 1254 1255 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT) 1256 return 0; 1257 1258 /* insert custom IEs that go before HT */ 1259 if (ie && ie_len) { 1260 static const u8 before_ht[] = { 1261 /* 1262 * no need to list the ones split off already 1263 * (or generated here) 1264 */ 1265 WLAN_EID_DS_PARAMS, 1266 WLAN_EID_SUPPORTED_REGULATORY_CLASSES, 1267 }; 1268 noffset = ieee80211_ie_split(ie, ie_len, 1269 before_ht, ARRAY_SIZE(before_ht), 1270 *offset); 1271 if (skb_tailroom(skb) < noffset - *offset) 1272 return -ENOBUFS; 1273 skb_put_data(skb, ie + *offset, noffset - *offset); 1274 *offset = noffset; 1275 } 1276 1277 if (sband->ht_cap.ht_supported) { 1278 u8 *pos; 1279 1280 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap)) 1281 return -ENOBUFS; 1282 1283 pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_cap)); 1284 ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, 1285 sband->ht_cap.cap); 1286 } 1287 1288 /* insert custom IEs that go before VHT */ 1289 if (ie && ie_len) { 1290 static const u8 before_vht[] = { 1291 /* 1292 * no need to list the ones split off already 1293 * (or generated here) 1294 */ 1295 WLAN_EID_BSS_COEX_2040, 1296 WLAN_EID_EXT_CAPABILITY, 1297 WLAN_EID_SSID_LIST, 1298 WLAN_EID_CHANNEL_USAGE, 1299 WLAN_EID_INTERWORKING, 1300 WLAN_EID_MESH_ID, 1301 /* 60 GHz (Multi-band, DMG, MMS) can't happen */ 1302 }; 1303 noffset = ieee80211_ie_split(ie, ie_len, 1304 before_vht, ARRAY_SIZE(before_vht), 1305 *offset); 1306 if (skb_tailroom(skb) < noffset - *offset) 1307 return -ENOBUFS; 1308 skb_put_data(skb, ie + *offset, noffset - *offset); 1309 *offset = noffset; 1310 } 1311 1312 /* Check if any channel in this sband supports at least 80 MHz */ 1313 for (i = 0; i < sband->n_channels; i++) { 1314 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | 1315 IEEE80211_CHAN_NO_80MHZ)) 1316 continue; 1317 1318 have_80mhz = true; 1319 break; 1320 } 1321 1322 if (sband->vht_cap.vht_supported && have_80mhz) { 1323 u8 *pos; 1324 1325 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_vht_cap)) 1326 return -ENOBUFS; 1327 1328 pos = skb_put(skb, 2 + sizeof(struct ieee80211_vht_cap)); 1329 ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, 1330 sband->vht_cap.cap); 1331 } 1332 1333 /* insert custom IEs that go before HE */ 1334 if (ie && ie_len) { 1335 static const u8 before_he[] = { 1336 /* 1337 * no need to list the ones split off before VHT 1338 * or generated here 1339 */ 1340 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS, 1341 WLAN_EID_AP_CSN, 1342 /* TODO: add 11ah/11aj/11ak elements */ 1343 }; 1344 noffset = ieee80211_ie_split(ie, ie_len, 1345 before_he, ARRAY_SIZE(before_he), 1346 *offset); 1347 if (skb_tailroom(skb) < noffset - *offset) 1348 return -ENOBUFS; 1349 skb_put_data(skb, ie + *offset, noffset - *offset); 1350 *offset = noffset; 1351 } 1352 1353 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 1354 IEEE80211_CHAN_NO_HE)) { 1355 err = ieee80211_put_he_cap(skb, sdata, sband, NULL); 1356 if (err) 1357 return err; 1358 } 1359 1360 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), 1361 IEEE80211_CHAN_NO_HE | 1362 IEEE80211_CHAN_NO_EHT)) { 1363 err = ieee80211_put_eht_cap(skb, sdata, sband, NULL); 1364 if (err) 1365 return err; 1366 } 1367 1368 err = ieee80211_put_he_6ghz_cap(skb, sdata, IEEE80211_SMPS_OFF); 1369 if (err) 1370 return err; 1371 1372 /* 1373 * If adding more here, adjust code in main.c 1374 * that calculates local->scan_ies_len. 1375 */ 1376 1377 return 0; 1378 } 1379 1380 static int ieee80211_put_preq_ies(struct sk_buff *skb, 1381 struct ieee80211_sub_if_data *sdata, 1382 struct ieee80211_scan_ies *ie_desc, 1383 const u8 *ie, size_t ie_len, 1384 u8 bands_used, u32 *rate_masks, 1385 struct cfg80211_chan_def *chandef, 1386 u32 flags) 1387 { 1388 size_t custom_ie_offset = 0; 1389 int i, err; 1390 1391 memset(ie_desc, 0, sizeof(*ie_desc)); 1392 1393 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1394 if (bands_used & BIT(i)) { 1395 ie_desc->ies[i] = skb_tail_pointer(skb); 1396 err = ieee80211_put_preq_ies_band(skb, sdata, 1397 ie, ie_len, 1398 &custom_ie_offset, 1399 i, rate_masks[i], 1400 chandef, flags); 1401 if (err) 1402 return err; 1403 ie_desc->len[i] = skb_tail_pointer(skb) - 1404 ie_desc->ies[i]; 1405 } 1406 } 1407 1408 /* add any remaining custom IEs */ 1409 if (ie && ie_len) { 1410 if (WARN_ONCE(skb_tailroom(skb) < ie_len - custom_ie_offset, 1411 "not enough space for preq custom IEs\n")) 1412 return -ENOBUFS; 1413 ie_desc->common_ies = skb_tail_pointer(skb); 1414 skb_put_data(skb, ie + custom_ie_offset, 1415 ie_len - custom_ie_offset); 1416 ie_desc->common_ie_len = skb_tail_pointer(skb) - 1417 ie_desc->common_ies; 1418 } 1419 1420 return 0; 1421 }; 1422 1423 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 1424 size_t buffer_len, 1425 struct ieee80211_scan_ies *ie_desc, 1426 const u8 *ie, size_t ie_len, 1427 u8 bands_used, u32 *rate_masks, 1428 struct cfg80211_chan_def *chandef, 1429 u32 flags) 1430 { 1431 struct sk_buff *skb = alloc_skb(buffer_len, GFP_KERNEL); 1432 uintptr_t offs; 1433 int ret, i; 1434 u8 *start; 1435 1436 if (!skb) 1437 return -ENOMEM; 1438 1439 start = skb_tail_pointer(skb); 1440 memset(start, 0, skb_tailroom(skb)); 1441 ret = ieee80211_put_preq_ies(skb, sdata, ie_desc, ie, ie_len, 1442 bands_used, rate_masks, chandef, 1443 flags); 1444 if (ret < 0) { 1445 goto out; 1446 } 1447 1448 if (skb->len > buffer_len) { 1449 ret = -ENOBUFS; 1450 goto out; 1451 } 1452 1453 memcpy(buffer, start, skb->len); 1454 1455 /* adjust ie_desc for copy */ 1456 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1457 offs = ie_desc->ies[i] - start; 1458 ie_desc->ies[i] = buffer + offs; 1459 } 1460 offs = ie_desc->common_ies - start; 1461 ie_desc->common_ies = buffer + offs; 1462 1463 ret = skb->len; 1464 out: 1465 consume_skb(skb); 1466 return ret; 1467 } 1468 1469 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1470 const u8 *src, const u8 *dst, 1471 u32 ratemask, 1472 struct ieee80211_channel *chan, 1473 const u8 *ssid, size_t ssid_len, 1474 const u8 *ie, size_t ie_len, 1475 u32 flags) 1476 { 1477 struct ieee80211_local *local = sdata->local; 1478 struct cfg80211_chan_def chandef; 1479 struct sk_buff *skb; 1480 struct ieee80211_mgmt *mgmt; 1481 u32 rate_masks[NUM_NL80211_BANDS] = {}; 1482 struct ieee80211_scan_ies dummy_ie_desc; 1483 1484 /* 1485 * Do not send DS Channel parameter for directed probe requests 1486 * in order to maximize the chance that we get a response. Some 1487 * badly-behaved APs don't respond when this parameter is included. 1488 */ 1489 chandef.width = sdata->vif.bss_conf.chanreq.oper.width; 1490 if (flags & IEEE80211_PROBE_FLAG_DIRECTED) 1491 chandef.chan = NULL; 1492 else 1493 chandef.chan = chan; 1494 1495 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len, 1496 local->scan_ies_len + ie_len); 1497 if (!skb) 1498 return NULL; 1499 1500 rate_masks[chan->band] = ratemask; 1501 ieee80211_put_preq_ies(skb, sdata, &dummy_ie_desc, 1502 ie, ie_len, BIT(chan->band), 1503 rate_masks, &chandef, flags); 1504 1505 if (dst) { 1506 mgmt = (struct ieee80211_mgmt *) skb->data; 1507 memcpy(mgmt->da, dst, ETH_ALEN); 1508 memcpy(mgmt->bssid, dst, ETH_ALEN); 1509 } 1510 1511 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 1512 1513 return skb; 1514 } 1515 1516 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1517 struct ieee802_11_elems *elems, 1518 enum nl80211_band band, u32 *basic_rates) 1519 { 1520 struct ieee80211_supported_band *sband; 1521 size_t num_rates; 1522 u32 supp_rates, rate_flags; 1523 int i, j; 1524 1525 sband = sdata->local->hw.wiphy->bands[band]; 1526 if (WARN_ON(!sband)) 1527 return 1; 1528 1529 rate_flags = 1530 ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chanreq.oper); 1531 1532 num_rates = sband->n_bitrates; 1533 supp_rates = 0; 1534 for (i = 0; i < elems->supp_rates_len + 1535 elems->ext_supp_rates_len; i++) { 1536 u8 rate = 0; 1537 int own_rate; 1538 bool is_basic; 1539 if (i < elems->supp_rates_len) 1540 rate = elems->supp_rates[i]; 1541 else if (elems->ext_supp_rates) 1542 rate = elems->ext_supp_rates 1543 [i - elems->supp_rates_len]; 1544 own_rate = 5 * (rate & 0x7f); 1545 is_basic = !!(rate & 0x80); 1546 1547 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 1548 continue; 1549 1550 for (j = 0; j < num_rates; j++) { 1551 int brate; 1552 if ((rate_flags & sband->bitrates[j].flags) 1553 != rate_flags) 1554 continue; 1555 1556 brate = sband->bitrates[j].bitrate; 1557 1558 if (brate == own_rate) { 1559 supp_rates |= BIT(j); 1560 if (basic_rates && is_basic) 1561 *basic_rates |= BIT(j); 1562 } 1563 } 1564 } 1565 return supp_rates; 1566 } 1567 1568 void ieee80211_stop_device(struct ieee80211_local *local) 1569 { 1570 ieee80211_led_radio(local, false); 1571 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO); 1572 1573 wiphy_work_cancel(local->hw.wiphy, &local->reconfig_filter); 1574 1575 flush_workqueue(local->workqueue); 1576 wiphy_work_flush(local->hw.wiphy, NULL); 1577 drv_stop(local); 1578 } 1579 1580 static void ieee80211_flush_completed_scan(struct ieee80211_local *local, 1581 bool aborted) 1582 { 1583 /* It's possible that we don't handle the scan completion in 1584 * time during suspend, so if it's still marked as completed 1585 * here, queue the work and flush it to clean things up. 1586 * Instead of calling the worker function directly here, we 1587 * really queue it to avoid potential races with other flows 1588 * scheduling the same work. 1589 */ 1590 if (test_bit(SCAN_COMPLETED, &local->scanning)) { 1591 /* If coming from reconfiguration failure, abort the scan so 1592 * we don't attempt to continue a partial HW scan - which is 1593 * possible otherwise if (e.g.) the 2.4 GHz portion was the 1594 * completed scan, and a 5 GHz portion is still pending. 1595 */ 1596 if (aborted) 1597 set_bit(SCAN_ABORTED, &local->scanning); 1598 wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work, 0); 1599 wiphy_delayed_work_flush(local->hw.wiphy, &local->scan_work); 1600 } 1601 } 1602 1603 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local) 1604 { 1605 struct ieee80211_sub_if_data *sdata; 1606 struct ieee80211_chanctx *ctx; 1607 1608 lockdep_assert_wiphy(local->hw.wiphy); 1609 1610 /* 1611 * We get here if during resume the device can't be restarted properly. 1612 * We might also get here if this happens during HW reset, which is a 1613 * slightly different situation and we need to drop all connections in 1614 * the latter case. 1615 * 1616 * Ask cfg80211 to turn off all interfaces, this will result in more 1617 * warnings but at least we'll then get into a clean stopped state. 1618 */ 1619 1620 local->resuming = false; 1621 local->suspended = false; 1622 local->in_reconfig = false; 1623 local->reconfig_failure = true; 1624 1625 ieee80211_flush_completed_scan(local, true); 1626 1627 /* scheduled scan clearly can't be running any more, but tell 1628 * cfg80211 and clear local state 1629 */ 1630 ieee80211_sched_scan_end(local); 1631 1632 list_for_each_entry(sdata, &local->interfaces, list) 1633 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; 1634 1635 /* Mark channel contexts as not being in the driver any more to avoid 1636 * removing them from the driver during the shutdown process... 1637 */ 1638 list_for_each_entry(ctx, &local->chanctx_list, list) 1639 ctx->driver_present = false; 1640 } 1641 1642 static void ieee80211_assign_chanctx(struct ieee80211_local *local, 1643 struct ieee80211_sub_if_data *sdata, 1644 struct ieee80211_link_data *link) 1645 { 1646 struct ieee80211_chanctx_conf *conf; 1647 struct ieee80211_chanctx *ctx; 1648 1649 lockdep_assert_wiphy(local->hw.wiphy); 1650 1651 conf = rcu_dereference_protected(link->conf->chanctx_conf, 1652 lockdep_is_held(&local->hw.wiphy->mtx)); 1653 if (conf) { 1654 ctx = container_of(conf, struct ieee80211_chanctx, conf); 1655 drv_assign_vif_chanctx(local, sdata, link->conf, ctx); 1656 } 1657 } 1658 1659 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata) 1660 { 1661 struct ieee80211_local *local = sdata->local; 1662 struct sta_info *sta; 1663 1664 lockdep_assert_wiphy(local->hw.wiphy); 1665 1666 /* add STAs back */ 1667 list_for_each_entry(sta, &local->sta_list, list) { 1668 enum ieee80211_sta_state state; 1669 1670 if (!sta->uploaded || sta->sdata != sdata) 1671 continue; 1672 1673 for (state = IEEE80211_STA_NOTEXIST; 1674 state < sta->sta_state; state++) 1675 WARN_ON(drv_sta_state(local, sta->sdata, sta, state, 1676 state + 1)); 1677 } 1678 } 1679 1680 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata) 1681 { 1682 struct cfg80211_nan_func *func, **funcs; 1683 int res, id, i = 0; 1684 1685 res = drv_start_nan(sdata->local, sdata, 1686 &sdata->u.nan.conf); 1687 if (WARN_ON(res)) 1688 return res; 1689 1690 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1, 1691 sizeof(*funcs), 1692 GFP_KERNEL); 1693 if (!funcs) 1694 return -ENOMEM; 1695 1696 /* Add all the functions: 1697 * This is a little bit ugly. We need to call a potentially sleeping 1698 * callback for each NAN function, so we can't hold the spinlock. 1699 */ 1700 spin_lock_bh(&sdata->u.nan.func_lock); 1701 1702 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) 1703 funcs[i++] = func; 1704 1705 spin_unlock_bh(&sdata->u.nan.func_lock); 1706 1707 for (i = 0; funcs[i]; i++) { 1708 res = drv_add_nan_func(sdata->local, sdata, funcs[i]); 1709 if (WARN_ON(res)) 1710 ieee80211_nan_func_terminated(&sdata->vif, 1711 funcs[i]->instance_id, 1712 NL80211_NAN_FUNC_TERM_REASON_ERROR, 1713 GFP_KERNEL); 1714 } 1715 1716 kfree(funcs); 1717 1718 return 0; 1719 } 1720 1721 static void ieee80211_reconfig_ap_links(struct ieee80211_local *local, 1722 struct ieee80211_sub_if_data *sdata, 1723 u64 changed) 1724 { 1725 int link_id; 1726 1727 for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { 1728 struct ieee80211_link_data *link; 1729 1730 if (!(sdata->vif.active_links & BIT(link_id))) 1731 continue; 1732 1733 link = sdata_dereference(sdata->link[link_id], sdata); 1734 if (!link) 1735 continue; 1736 1737 if (rcu_access_pointer(link->u.ap.beacon)) 1738 drv_start_ap(local, sdata, link->conf); 1739 1740 if (!link->conf->enable_beacon) 1741 continue; 1742 1743 changed |= BSS_CHANGED_BEACON | 1744 BSS_CHANGED_BEACON_ENABLED; 1745 1746 ieee80211_link_info_change_notify(sdata, link, changed); 1747 } 1748 } 1749 1750 int ieee80211_reconfig(struct ieee80211_local *local) 1751 { 1752 struct ieee80211_hw *hw = &local->hw; 1753 struct ieee80211_sub_if_data *sdata; 1754 struct ieee80211_chanctx *ctx; 1755 struct sta_info *sta; 1756 int res, i; 1757 bool reconfig_due_to_wowlan = false; 1758 struct ieee80211_sub_if_data *sched_scan_sdata; 1759 struct cfg80211_sched_scan_request *sched_scan_req; 1760 bool sched_scan_stopped = false; 1761 bool suspended = local->suspended; 1762 bool in_reconfig = false; 1763 1764 lockdep_assert_wiphy(local->hw.wiphy); 1765 1766 /* nothing to do if HW shouldn't run */ 1767 if (!local->open_count) 1768 goto wake_up; 1769 1770 #ifdef CONFIG_PM 1771 if (suspended) 1772 local->resuming = true; 1773 1774 if (local->wowlan) { 1775 /* 1776 * In the wowlan case, both mac80211 and the device 1777 * are functional when the resume op is called, so 1778 * clear local->suspended so the device could operate 1779 * normally (e.g. pass rx frames). 1780 */ 1781 local->suspended = false; 1782 res = drv_resume(local); 1783 local->wowlan = false; 1784 if (res < 0) { 1785 local->resuming = false; 1786 return res; 1787 } 1788 if (res == 0) 1789 goto wake_up; 1790 WARN_ON(res > 1); 1791 /* 1792 * res is 1, which means the driver requested 1793 * to go through a regular reset on wakeup. 1794 * restore local->suspended in this case. 1795 */ 1796 reconfig_due_to_wowlan = true; 1797 local->suspended = true; 1798 } 1799 #endif 1800 1801 /* 1802 * In case of hw_restart during suspend (without wowlan), 1803 * cancel restart work, as we are reconfiguring the device 1804 * anyway. 1805 * Note that restart_work is scheduled on a frozen workqueue, 1806 * so we can't deadlock in this case. 1807 */ 1808 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan) 1809 cancel_work_sync(&local->restart_work); 1810 1811 local->started = false; 1812 1813 /* 1814 * Upon resume hardware can sometimes be goofy due to 1815 * various platform / driver / bus issues, so restarting 1816 * the device may at times not work immediately. Propagate 1817 * the error. 1818 */ 1819 res = drv_start(local); 1820 if (res) { 1821 if (suspended) 1822 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n"); 1823 else 1824 WARN(1, "Hardware became unavailable during restart.\n"); 1825 ieee80211_handle_reconfig_failure(local); 1826 return res; 1827 } 1828 1829 /* setup fragmentation threshold */ 1830 drv_set_frag_threshold(local, hw->wiphy->frag_threshold); 1831 1832 /* setup RTS threshold */ 1833 drv_set_rts_threshold(local, hw->wiphy->rts_threshold); 1834 1835 /* reset coverage class */ 1836 drv_set_coverage_class(local, hw->wiphy->coverage_class); 1837 1838 ieee80211_led_radio(local, true); 1839 ieee80211_mod_tpt_led_trig(local, 1840 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); 1841 1842 /* add interfaces */ 1843 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); 1844 if (sdata) { 1845 /* in HW restart it exists already */ 1846 WARN_ON(local->resuming); 1847 res = drv_add_interface(local, sdata); 1848 if (WARN_ON(res)) { 1849 RCU_INIT_POINTER(local->monitor_sdata, NULL); 1850 synchronize_net(); 1851 kfree(sdata); 1852 } 1853 } 1854 1855 list_for_each_entry(sdata, &local->interfaces, list) { 1856 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1857 sdata->vif.type != NL80211_IFTYPE_MONITOR && 1858 ieee80211_sdata_running(sdata)) { 1859 res = drv_add_interface(local, sdata); 1860 if (WARN_ON(res)) 1861 break; 1862 } 1863 } 1864 1865 /* If adding any of the interfaces failed above, roll back and 1866 * report failure. 1867 */ 1868 if (res) { 1869 list_for_each_entry_continue_reverse(sdata, &local->interfaces, 1870 list) 1871 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1872 sdata->vif.type != NL80211_IFTYPE_MONITOR && 1873 ieee80211_sdata_running(sdata)) 1874 drv_remove_interface(local, sdata); 1875 ieee80211_handle_reconfig_failure(local); 1876 return res; 1877 } 1878 1879 /* add channel contexts */ 1880 list_for_each_entry(ctx, &local->chanctx_list, list) 1881 if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER) 1882 WARN_ON(drv_add_chanctx(local, ctx)); 1883 1884 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); 1885 if (sdata && ieee80211_sdata_running(sdata)) 1886 ieee80211_assign_chanctx(local, sdata, &sdata->deflink); 1887 1888 /* reconfigure hardware */ 1889 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_LISTEN_INTERVAL | 1890 IEEE80211_CONF_CHANGE_MONITOR | 1891 IEEE80211_CONF_CHANGE_PS | 1892 IEEE80211_CONF_CHANGE_RETRY_LIMITS | 1893 IEEE80211_CONF_CHANGE_IDLE); 1894 1895 ieee80211_configure_filter(local); 1896 1897 /* Finally also reconfigure all the BSS information */ 1898 list_for_each_entry(sdata, &local->interfaces, list) { 1899 /* common change flags for all interface types - link only */ 1900 u64 changed = BSS_CHANGED_ERP_CTS_PROT | 1901 BSS_CHANGED_ERP_PREAMBLE | 1902 BSS_CHANGED_ERP_SLOT | 1903 BSS_CHANGED_HT | 1904 BSS_CHANGED_BASIC_RATES | 1905 BSS_CHANGED_BEACON_INT | 1906 BSS_CHANGED_BSSID | 1907 BSS_CHANGED_CQM | 1908 BSS_CHANGED_QOS | 1909 BSS_CHANGED_TXPOWER | 1910 BSS_CHANGED_MCAST_RATE; 1911 struct ieee80211_link_data *link = NULL; 1912 unsigned int link_id; 1913 u32 active_links = 0; 1914 1915 if (!ieee80211_sdata_running(sdata)) 1916 continue; 1917 1918 if (ieee80211_vif_is_mld(&sdata->vif)) { 1919 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS] = { 1920 [0] = &sdata->vif.bss_conf, 1921 }; 1922 1923 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 1924 /* start with a single active link */ 1925 active_links = sdata->vif.active_links; 1926 link_id = ffs(active_links) - 1; 1927 sdata->vif.active_links = BIT(link_id); 1928 } 1929 1930 drv_change_vif_links(local, sdata, 0, 1931 sdata->vif.active_links, 1932 old); 1933 } 1934 1935 for (link_id = 0; 1936 link_id < ARRAY_SIZE(sdata->vif.link_conf); 1937 link_id++) { 1938 if (!ieee80211_vif_link_active(&sdata->vif, link_id)) 1939 continue; 1940 1941 link = sdata_dereference(sdata->link[link_id], sdata); 1942 if (!link) 1943 continue; 1944 1945 ieee80211_assign_chanctx(local, sdata, link); 1946 } 1947 1948 switch (sdata->vif.type) { 1949 case NL80211_IFTYPE_AP_VLAN: 1950 case NL80211_IFTYPE_MONITOR: 1951 break; 1952 case NL80211_IFTYPE_ADHOC: 1953 if (sdata->vif.cfg.ibss_joined) 1954 WARN_ON(drv_join_ibss(local, sdata)); 1955 fallthrough; 1956 default: 1957 ieee80211_reconfig_stations(sdata); 1958 fallthrough; 1959 case NL80211_IFTYPE_AP: /* AP stations are handled later */ 1960 for (i = 0; i < IEEE80211_NUM_ACS; i++) 1961 drv_conf_tx(local, &sdata->deflink, i, 1962 &sdata->deflink.tx_conf[i]); 1963 break; 1964 } 1965 1966 if (sdata->vif.bss_conf.mu_mimo_owner) 1967 changed |= BSS_CHANGED_MU_GROUPS; 1968 1969 if (!ieee80211_vif_is_mld(&sdata->vif)) 1970 changed |= BSS_CHANGED_IDLE; 1971 1972 switch (sdata->vif.type) { 1973 case NL80211_IFTYPE_STATION: 1974 if (!ieee80211_vif_is_mld(&sdata->vif)) { 1975 changed |= BSS_CHANGED_ASSOC | 1976 BSS_CHANGED_ARP_FILTER | 1977 BSS_CHANGED_PS; 1978 1979 /* Re-send beacon info report to the driver */ 1980 if (sdata->deflink.u.mgd.have_beacon) 1981 changed |= BSS_CHANGED_BEACON_INFO; 1982 1983 if (sdata->vif.bss_conf.max_idle_period || 1984 sdata->vif.bss_conf.protected_keep_alive) 1985 changed |= BSS_CHANGED_KEEP_ALIVE; 1986 1987 ieee80211_bss_info_change_notify(sdata, 1988 changed); 1989 } else if (!WARN_ON(!link)) { 1990 ieee80211_link_info_change_notify(sdata, link, 1991 changed); 1992 changed = BSS_CHANGED_ASSOC | 1993 BSS_CHANGED_IDLE | 1994 BSS_CHANGED_PS | 1995 BSS_CHANGED_ARP_FILTER; 1996 ieee80211_vif_cfg_change_notify(sdata, changed); 1997 } 1998 break; 1999 case NL80211_IFTYPE_OCB: 2000 changed |= BSS_CHANGED_OCB; 2001 ieee80211_bss_info_change_notify(sdata, changed); 2002 break; 2003 case NL80211_IFTYPE_ADHOC: 2004 changed |= BSS_CHANGED_IBSS; 2005 fallthrough; 2006 case NL80211_IFTYPE_AP: 2007 changed |= BSS_CHANGED_P2P_PS; 2008 2009 if (ieee80211_vif_is_mld(&sdata->vif)) 2010 ieee80211_vif_cfg_change_notify(sdata, 2011 BSS_CHANGED_SSID); 2012 else 2013 changed |= BSS_CHANGED_SSID; 2014 2015 if (sdata->vif.bss_conf.ftm_responder == 1 && 2016 wiphy_ext_feature_isset(sdata->local->hw.wiphy, 2017 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER)) 2018 changed |= BSS_CHANGED_FTM_RESPONDER; 2019 2020 if (sdata->vif.type == NL80211_IFTYPE_AP) { 2021 changed |= BSS_CHANGED_AP_PROBE_RESP; 2022 2023 if (ieee80211_vif_is_mld(&sdata->vif)) { 2024 ieee80211_reconfig_ap_links(local, 2025 sdata, 2026 changed); 2027 break; 2028 } 2029 2030 if (rcu_access_pointer(sdata->deflink.u.ap.beacon)) 2031 drv_start_ap(local, sdata, 2032 sdata->deflink.conf); 2033 } 2034 fallthrough; 2035 case NL80211_IFTYPE_MESH_POINT: 2036 if (sdata->vif.bss_conf.enable_beacon) { 2037 changed |= BSS_CHANGED_BEACON | 2038 BSS_CHANGED_BEACON_ENABLED; 2039 ieee80211_bss_info_change_notify(sdata, changed); 2040 } 2041 break; 2042 case NL80211_IFTYPE_NAN: 2043 res = ieee80211_reconfig_nan(sdata); 2044 if (res < 0) { 2045 ieee80211_handle_reconfig_failure(local); 2046 return res; 2047 } 2048 break; 2049 case NL80211_IFTYPE_AP_VLAN: 2050 case NL80211_IFTYPE_MONITOR: 2051 case NL80211_IFTYPE_P2P_DEVICE: 2052 /* nothing to do */ 2053 break; 2054 case NL80211_IFTYPE_UNSPECIFIED: 2055 case NUM_NL80211_IFTYPES: 2056 case NL80211_IFTYPE_P2P_CLIENT: 2057 case NL80211_IFTYPE_P2P_GO: 2058 case NL80211_IFTYPE_WDS: 2059 WARN_ON(1); 2060 break; 2061 } 2062 2063 if (active_links) 2064 ieee80211_set_active_links(&sdata->vif, active_links); 2065 } 2066 2067 ieee80211_recalc_ps(local); 2068 2069 /* 2070 * The sta might be in psm against the ap (e.g. because 2071 * this was the state before a hw restart), so we 2072 * explicitly send a null packet in order to make sure 2073 * it'll sync against the ap (and get out of psm). 2074 */ 2075 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) { 2076 list_for_each_entry(sdata, &local->interfaces, list) { 2077 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2078 continue; 2079 if (!sdata->u.mgd.associated) 2080 continue; 2081 2082 ieee80211_send_nullfunc(local, sdata, false); 2083 } 2084 } 2085 2086 /* APs are now beaconing, add back stations */ 2087 list_for_each_entry(sdata, &local->interfaces, list) { 2088 if (!ieee80211_sdata_running(sdata)) 2089 continue; 2090 2091 switch (sdata->vif.type) { 2092 case NL80211_IFTYPE_AP_VLAN: 2093 case NL80211_IFTYPE_AP: 2094 ieee80211_reconfig_stations(sdata); 2095 break; 2096 default: 2097 break; 2098 } 2099 } 2100 2101 /* add back keys */ 2102 list_for_each_entry(sdata, &local->interfaces, list) 2103 ieee80211_reenable_keys(sdata); 2104 2105 /* Reconfigure sched scan if it was interrupted by FW restart */ 2106 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, 2107 lockdep_is_held(&local->hw.wiphy->mtx)); 2108 sched_scan_req = rcu_dereference_protected(local->sched_scan_req, 2109 lockdep_is_held(&local->hw.wiphy->mtx)); 2110 if (sched_scan_sdata && sched_scan_req) 2111 /* 2112 * Sched scan stopped, but we don't want to report it. Instead, 2113 * we're trying to reschedule. However, if more than one scan 2114 * plan was set, we cannot reschedule since we don't know which 2115 * scan plan was currently running (and some scan plans may have 2116 * already finished). 2117 */ 2118 if (sched_scan_req->n_scan_plans > 1 || 2119 __ieee80211_request_sched_scan_start(sched_scan_sdata, 2120 sched_scan_req)) { 2121 RCU_INIT_POINTER(local->sched_scan_sdata, NULL); 2122 RCU_INIT_POINTER(local->sched_scan_req, NULL); 2123 sched_scan_stopped = true; 2124 } 2125 2126 if (sched_scan_stopped) 2127 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0); 2128 2129 wake_up: 2130 2131 if (local->monitors == local->open_count && local->monitors > 0) 2132 ieee80211_add_virtual_monitor(local); 2133 2134 /* 2135 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation 2136 * sessions can be established after a resume. 2137 * 2138 * Also tear down aggregation sessions since reconfiguring 2139 * them in a hardware restart scenario is not easily done 2140 * right now, and the hardware will have lost information 2141 * about the sessions, but we and the AP still think they 2142 * are active. This is really a workaround though. 2143 */ 2144 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) { 2145 list_for_each_entry(sta, &local->sta_list, list) { 2146 if (!local->resuming) 2147 ieee80211_sta_tear_down_BA_sessions( 2148 sta, AGG_STOP_LOCAL_REQUEST); 2149 clear_sta_flag(sta, WLAN_STA_BLOCK_BA); 2150 } 2151 } 2152 2153 /* 2154 * If this is for hw restart things are still running. 2155 * We may want to change that later, however. 2156 */ 2157 if (local->open_count && (!suspended || reconfig_due_to_wowlan)) 2158 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART); 2159 2160 if (local->in_reconfig) { 2161 in_reconfig = local->in_reconfig; 2162 local->in_reconfig = false; 2163 barrier(); 2164 2165 /* Restart deferred ROCs */ 2166 ieee80211_start_next_roc(local); 2167 2168 /* Requeue all works */ 2169 list_for_each_entry(sdata, &local->interfaces, list) 2170 wiphy_work_queue(local->hw.wiphy, &sdata->work); 2171 } 2172 2173 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 2174 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 2175 false); 2176 2177 if (in_reconfig) { 2178 list_for_each_entry(sdata, &local->interfaces, list) { 2179 if (!ieee80211_sdata_running(sdata)) 2180 continue; 2181 if (sdata->vif.type == NL80211_IFTYPE_STATION) 2182 ieee80211_sta_restart(sdata); 2183 } 2184 } 2185 2186 if (!suspended) 2187 return 0; 2188 2189 #ifdef CONFIG_PM 2190 /* first set suspended false, then resuming */ 2191 local->suspended = false; 2192 mb(); 2193 local->resuming = false; 2194 2195 ieee80211_flush_completed_scan(local, false); 2196 2197 if (local->open_count && !reconfig_due_to_wowlan) 2198 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND); 2199 2200 list_for_each_entry(sdata, &local->interfaces, list) { 2201 if (!ieee80211_sdata_running(sdata)) 2202 continue; 2203 if (sdata->vif.type == NL80211_IFTYPE_STATION) 2204 ieee80211_sta_restart(sdata); 2205 } 2206 2207 mod_timer(&local->sta_cleanup, jiffies + 1); 2208 #else 2209 WARN_ON(1); 2210 #endif 2211 2212 return 0; 2213 } 2214 2215 static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag) 2216 { 2217 struct ieee80211_sub_if_data *sdata; 2218 struct ieee80211_local *local; 2219 struct ieee80211_key *key; 2220 2221 if (WARN_ON(!vif)) 2222 return; 2223 2224 sdata = vif_to_sdata(vif); 2225 local = sdata->local; 2226 2227 lockdep_assert_wiphy(local->hw.wiphy); 2228 2229 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME && 2230 !local->resuming)) 2231 return; 2232 2233 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART && 2234 !local->in_reconfig)) 2235 return; 2236 2237 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) 2238 return; 2239 2240 sdata->flags |= flag; 2241 2242 list_for_each_entry(key, &sdata->key_list, list) 2243 key->flags |= KEY_FLAG_TAINTED; 2244 } 2245 2246 void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif) 2247 { 2248 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART); 2249 } 2250 EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect); 2251 2252 void ieee80211_resume_disconnect(struct ieee80211_vif *vif) 2253 { 2254 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME); 2255 } 2256 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); 2257 2258 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata, 2259 struct ieee80211_link_data *link) 2260 { 2261 struct ieee80211_local *local = sdata->local; 2262 struct ieee80211_chanctx_conf *chanctx_conf; 2263 struct ieee80211_chanctx *chanctx; 2264 2265 lockdep_assert_wiphy(local->hw.wiphy); 2266 2267 chanctx_conf = rcu_dereference_protected(link->conf->chanctx_conf, 2268 lockdep_is_held(&local->hw.wiphy->mtx)); 2269 2270 /* 2271 * This function can be called from a work, thus it may be possible 2272 * that the chanctx_conf is removed (due to a disconnection, for 2273 * example). 2274 * So nothing should be done in such case. 2275 */ 2276 if (!chanctx_conf) 2277 return; 2278 2279 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); 2280 ieee80211_recalc_smps_chanctx(local, chanctx); 2281 } 2282 2283 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata, 2284 int link_id) 2285 { 2286 struct ieee80211_local *local = sdata->local; 2287 struct ieee80211_chanctx_conf *chanctx_conf; 2288 struct ieee80211_chanctx *chanctx; 2289 int i; 2290 2291 lockdep_assert_wiphy(local->hw.wiphy); 2292 2293 for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) { 2294 struct ieee80211_bss_conf *bss_conf; 2295 2296 if (link_id >= 0 && link_id != i) 2297 continue; 2298 2299 rcu_read_lock(); 2300 bss_conf = rcu_dereference(sdata->vif.link_conf[i]); 2301 if (!bss_conf) { 2302 rcu_read_unlock(); 2303 continue; 2304 } 2305 2306 chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf, 2307 lockdep_is_held(&local->hw.wiphy->mtx)); 2308 /* 2309 * Since we hold the wiphy mutex (checked above) 2310 * we can take the chanctx_conf pointer out of the 2311 * RCU critical section, it cannot go away without 2312 * the mutex. Just the way we reached it could - in 2313 * theory - go away, but we don't really care and 2314 * it really shouldn't happen anyway. 2315 */ 2316 rcu_read_unlock(); 2317 2318 if (!chanctx_conf) 2319 return; 2320 2321 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, 2322 conf); 2323 ieee80211_recalc_chanctx_min_def(local, chanctx, NULL); 2324 } 2325 } 2326 2327 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) 2328 { 2329 size_t pos = offset; 2330 2331 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC) 2332 pos += 2 + ies[pos + 1]; 2333 2334 return pos; 2335 } 2336 2337 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2338 u16 cap) 2339 { 2340 __le16 tmp; 2341 2342 *pos++ = WLAN_EID_HT_CAPABILITY; 2343 *pos++ = sizeof(struct ieee80211_ht_cap); 2344 memset(pos, 0, sizeof(struct ieee80211_ht_cap)); 2345 2346 /* capability flags */ 2347 tmp = cpu_to_le16(cap); 2348 memcpy(pos, &tmp, sizeof(u16)); 2349 pos += sizeof(u16); 2350 2351 /* AMPDU parameters */ 2352 *pos++ = ht_cap->ampdu_factor | 2353 (ht_cap->ampdu_density << 2354 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); 2355 2356 /* MCS set */ 2357 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs)); 2358 pos += sizeof(ht_cap->mcs); 2359 2360 /* extended capabilities */ 2361 pos += sizeof(__le16); 2362 2363 /* BF capabilities */ 2364 pos += sizeof(__le32); 2365 2366 /* antenna selection */ 2367 pos += sizeof(u8); 2368 2369 return pos; 2370 } 2371 2372 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2373 u32 cap) 2374 { 2375 __le32 tmp; 2376 2377 *pos++ = WLAN_EID_VHT_CAPABILITY; 2378 *pos++ = sizeof(struct ieee80211_vht_cap); 2379 memset(pos, 0, sizeof(struct ieee80211_vht_cap)); 2380 2381 /* capability flags */ 2382 tmp = cpu_to_le32(cap); 2383 memcpy(pos, &tmp, sizeof(u32)); 2384 pos += sizeof(u32); 2385 2386 /* VHT MCS set */ 2387 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs)); 2388 pos += sizeof(vht_cap->vht_mcs); 2389 2390 return pos; 2391 } 2392 2393 /* this may return more than ieee80211_put_he_6ghz_cap() will need */ 2394 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata) 2395 { 2396 const struct ieee80211_sta_he_cap *he_cap; 2397 struct ieee80211_supported_band *sband; 2398 u8 n; 2399 2400 sband = ieee80211_get_sband(sdata); 2401 if (!sband) 2402 return 0; 2403 2404 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 2405 if (!he_cap) 2406 return 0; 2407 2408 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem); 2409 return 2 + 1 + 2410 sizeof(he_cap->he_cap_elem) + n + 2411 ieee80211_he_ppe_size(he_cap->ppe_thres[0], 2412 he_cap->he_cap_elem.phy_cap_info); 2413 } 2414 2415 static void 2416 ieee80211_get_adjusted_he_cap(const struct ieee80211_conn_settings *conn, 2417 const struct ieee80211_sta_he_cap *he_cap, 2418 struct ieee80211_he_cap_elem *elem) 2419 { 2420 u8 ru_limit, max_ru; 2421 2422 *elem = he_cap->he_cap_elem; 2423 2424 switch (conn->bw_limit) { 2425 case IEEE80211_CONN_BW_LIMIT_20: 2426 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242; 2427 break; 2428 case IEEE80211_CONN_BW_LIMIT_40: 2429 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484; 2430 break; 2431 case IEEE80211_CONN_BW_LIMIT_80: 2432 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996; 2433 break; 2434 default: 2435 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996; 2436 break; 2437 } 2438 2439 max_ru = elem->phy_cap_info[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK; 2440 max_ru = min(max_ru, ru_limit); 2441 elem->phy_cap_info[8] &= ~IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK; 2442 elem->phy_cap_info[8] |= max_ru; 2443 2444 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_40) { 2445 elem->phy_cap_info[0] &= 2446 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G | 2447 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G); 2448 elem->phy_cap_info[9] &= 2449 ~IEEE80211_HE_PHY_CAP9_LONGER_THAN_16_SIGB_OFDM_SYM; 2450 } 2451 2452 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) { 2453 elem->phy_cap_info[0] &= 2454 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G | 2455 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G); 2456 elem->phy_cap_info[5] &= 2457 ~IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ_MASK; 2458 elem->phy_cap_info[7] &= 2459 ~(IEEE80211_HE_PHY_CAP7_STBC_TX_ABOVE_80MHZ | 2460 IEEE80211_HE_PHY_CAP7_STBC_RX_ABOVE_80MHZ); 2461 } 2462 } 2463 2464 int ieee80211_put_he_cap(struct sk_buff *skb, 2465 struct ieee80211_sub_if_data *sdata, 2466 const struct ieee80211_supported_band *sband, 2467 const struct ieee80211_conn_settings *conn) 2468 { 2469 const struct ieee80211_sta_he_cap *he_cap; 2470 struct ieee80211_he_cap_elem elem; 2471 u8 *len; 2472 u8 n; 2473 u8 ie_len; 2474 2475 if (!conn) 2476 conn = &ieee80211_conn_settings_unlimited; 2477 2478 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 2479 if (!he_cap) 2480 return 0; 2481 2482 /* modify on stack first to calculate 'n' and 'ie_len' correctly */ 2483 ieee80211_get_adjusted_he_cap(conn, he_cap, &elem); 2484 2485 n = ieee80211_he_mcs_nss_size(&elem); 2486 ie_len = 2 + 1 + 2487 sizeof(he_cap->he_cap_elem) + n + 2488 ieee80211_he_ppe_size(he_cap->ppe_thres[0], 2489 he_cap->he_cap_elem.phy_cap_info); 2490 2491 if (skb_tailroom(skb) < ie_len) 2492 return -ENOBUFS; 2493 2494 skb_put_u8(skb, WLAN_EID_EXTENSION); 2495 len = skb_put(skb, 1); /* We'll set the size later below */ 2496 skb_put_u8(skb, WLAN_EID_EXT_HE_CAPABILITY); 2497 2498 /* Fixed data */ 2499 skb_put_data(skb, &elem, sizeof(elem)); 2500 2501 skb_put_data(skb, &he_cap->he_mcs_nss_supp, n); 2502 2503 /* Check if PPE Threshold should be present */ 2504 if ((he_cap->he_cap_elem.phy_cap_info[6] & 2505 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0) 2506 goto end; 2507 2508 /* 2509 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm: 2510 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK) 2511 */ 2512 n = hweight8(he_cap->ppe_thres[0] & 2513 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK); 2514 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >> 2515 IEEE80211_PPE_THRES_NSS_POS)); 2516 2517 /* 2518 * Each pair is 6 bits, and we need to add the 7 "header" bits to the 2519 * total size. 2520 */ 2521 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7; 2522 n = DIV_ROUND_UP(n, 8); 2523 2524 /* Copy PPE Thresholds */ 2525 skb_put_data(skb, &he_cap->ppe_thres, n); 2526 2527 end: 2528 *len = skb_tail_pointer(skb) - len - 1; 2529 return 0; 2530 } 2531 2532 int ieee80211_put_he_6ghz_cap(struct sk_buff *skb, 2533 struct ieee80211_sub_if_data *sdata, 2534 enum ieee80211_smps_mode smps_mode) 2535 { 2536 struct ieee80211_supported_band *sband; 2537 const struct ieee80211_sband_iftype_data *iftd; 2538 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif); 2539 __le16 cap; 2540 2541 if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy, 2542 BIT(NL80211_BAND_6GHZ), 2543 IEEE80211_CHAN_NO_HE)) 2544 return 0; 2545 2546 sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ]; 2547 2548 iftd = ieee80211_get_sband_iftype_data(sband, iftype); 2549 if (!iftd) 2550 return 0; 2551 2552 /* Check for device HE 6 GHz capability before adding element */ 2553 if (!iftd->he_6ghz_capa.capa) 2554 return 0; 2555 2556 cap = iftd->he_6ghz_capa.capa; 2557 cap &= cpu_to_le16(~IEEE80211_HE_6GHZ_CAP_SM_PS); 2558 2559 switch (smps_mode) { 2560 case IEEE80211_SMPS_AUTOMATIC: 2561 case IEEE80211_SMPS_NUM_MODES: 2562 WARN_ON(1); 2563 fallthrough; 2564 case IEEE80211_SMPS_OFF: 2565 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED, 2566 IEEE80211_HE_6GHZ_CAP_SM_PS); 2567 break; 2568 case IEEE80211_SMPS_STATIC: 2569 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC, 2570 IEEE80211_HE_6GHZ_CAP_SM_PS); 2571 break; 2572 case IEEE80211_SMPS_DYNAMIC: 2573 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC, 2574 IEEE80211_HE_6GHZ_CAP_SM_PS); 2575 break; 2576 } 2577 2578 if (skb_tailroom(skb) < 2 + 1 + sizeof(cap)) 2579 return -ENOBUFS; 2580 2581 skb_put_u8(skb, WLAN_EID_EXTENSION); 2582 skb_put_u8(skb, 1 + sizeof(cap)); 2583 skb_put_u8(skb, WLAN_EID_EXT_HE_6GHZ_CAPA); 2584 skb_put_data(skb, &cap, sizeof(cap)); 2585 return 0; 2586 } 2587 2588 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2589 const struct cfg80211_chan_def *chandef, 2590 u16 prot_mode, bool rifs_mode) 2591 { 2592 struct ieee80211_ht_operation *ht_oper; 2593 /* Build HT Information */ 2594 *pos++ = WLAN_EID_HT_OPERATION; 2595 *pos++ = sizeof(struct ieee80211_ht_operation); 2596 ht_oper = (struct ieee80211_ht_operation *)pos; 2597 ht_oper->primary_chan = ieee80211_frequency_to_channel( 2598 chandef->chan->center_freq); 2599 switch (chandef->width) { 2600 case NL80211_CHAN_WIDTH_160: 2601 case NL80211_CHAN_WIDTH_80P80: 2602 case NL80211_CHAN_WIDTH_80: 2603 case NL80211_CHAN_WIDTH_40: 2604 if (chandef->center_freq1 > chandef->chan->center_freq) 2605 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 2606 else 2607 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 2608 break; 2609 case NL80211_CHAN_WIDTH_320: 2610 /* HT information element should not be included on 6GHz */ 2611 WARN_ON(1); 2612 return pos; 2613 default: 2614 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; 2615 break; 2616 } 2617 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 2618 chandef->width != NL80211_CHAN_WIDTH_20_NOHT && 2619 chandef->width != NL80211_CHAN_WIDTH_20) 2620 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; 2621 2622 if (rifs_mode) 2623 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE; 2624 2625 ht_oper->operation_mode = cpu_to_le16(prot_mode); 2626 ht_oper->stbc_param = 0x0000; 2627 2628 /* It seems that Basic MCS set and Supported MCS set 2629 are identical for the first 10 bytes */ 2630 memset(&ht_oper->basic_set, 0, 16); 2631 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10); 2632 2633 return pos + sizeof(struct ieee80211_ht_operation); 2634 } 2635 2636 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2637 const struct cfg80211_chan_def *chandef) 2638 { 2639 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */ 2640 *pos++ = 3; /* IE length */ 2641 /* New channel width */ 2642 switch (chandef->width) { 2643 case NL80211_CHAN_WIDTH_80: 2644 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ; 2645 break; 2646 case NL80211_CHAN_WIDTH_160: 2647 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ; 2648 break; 2649 case NL80211_CHAN_WIDTH_80P80: 2650 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ; 2651 break; 2652 case NL80211_CHAN_WIDTH_320: 2653 /* The behavior is not defined for 320 MHz channels */ 2654 WARN_ON(1); 2655 fallthrough; 2656 default: 2657 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT; 2658 } 2659 2660 /* new center frequency segment 0 */ 2661 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1); 2662 /* new center frequency segment 1 */ 2663 if (chandef->center_freq2) 2664 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2); 2665 else 2666 *pos++ = 0; 2667 } 2668 2669 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2670 const struct cfg80211_chan_def *chandef) 2671 { 2672 struct ieee80211_vht_operation *vht_oper; 2673 2674 *pos++ = WLAN_EID_VHT_OPERATION; 2675 *pos++ = sizeof(struct ieee80211_vht_operation); 2676 vht_oper = (struct ieee80211_vht_operation *)pos; 2677 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel( 2678 chandef->center_freq1); 2679 if (chandef->center_freq2) 2680 vht_oper->center_freq_seg1_idx = 2681 ieee80211_frequency_to_channel(chandef->center_freq2); 2682 else 2683 vht_oper->center_freq_seg1_idx = 0x00; 2684 2685 switch (chandef->width) { 2686 case NL80211_CHAN_WIDTH_160: 2687 /* 2688 * Convert 160 MHz channel width to new style as interop 2689 * workaround. 2690 */ 2691 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2692 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx; 2693 if (chandef->chan->center_freq < chandef->center_freq1) 2694 vht_oper->center_freq_seg0_idx -= 8; 2695 else 2696 vht_oper->center_freq_seg0_idx += 8; 2697 break; 2698 case NL80211_CHAN_WIDTH_80P80: 2699 /* 2700 * Convert 80+80 MHz channel width to new style as interop 2701 * workaround. 2702 */ 2703 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2704 break; 2705 case NL80211_CHAN_WIDTH_80: 2706 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; 2707 break; 2708 case NL80211_CHAN_WIDTH_320: 2709 /* VHT information element should not be included on 6GHz */ 2710 WARN_ON(1); 2711 return pos; 2712 default: 2713 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; 2714 break; 2715 } 2716 2717 /* don't require special VHT peer rates */ 2718 vht_oper->basic_mcs_set = cpu_to_le16(0xffff); 2719 2720 return pos + sizeof(struct ieee80211_vht_operation); 2721 } 2722 2723 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef) 2724 { 2725 struct ieee80211_he_operation *he_oper; 2726 struct ieee80211_he_6ghz_oper *he_6ghz_op; 2727 u32 he_oper_params; 2728 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation); 2729 2730 if (chandef->chan->band == NL80211_BAND_6GHZ) 2731 ie_len += sizeof(struct ieee80211_he_6ghz_oper); 2732 2733 *pos++ = WLAN_EID_EXTENSION; 2734 *pos++ = ie_len; 2735 *pos++ = WLAN_EID_EXT_HE_OPERATION; 2736 2737 he_oper_params = 0; 2738 he_oper_params |= u32_encode_bits(1023, /* disabled */ 2739 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK); 2740 he_oper_params |= u32_encode_bits(1, 2741 IEEE80211_HE_OPERATION_ER_SU_DISABLE); 2742 he_oper_params |= u32_encode_bits(1, 2743 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED); 2744 if (chandef->chan->band == NL80211_BAND_6GHZ) 2745 he_oper_params |= u32_encode_bits(1, 2746 IEEE80211_HE_OPERATION_6GHZ_OP_INFO); 2747 2748 he_oper = (struct ieee80211_he_operation *)pos; 2749 he_oper->he_oper_params = cpu_to_le32(he_oper_params); 2750 2751 /* don't require special HE peer rates */ 2752 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff); 2753 pos += sizeof(struct ieee80211_he_operation); 2754 2755 if (chandef->chan->band != NL80211_BAND_6GHZ) 2756 goto out; 2757 2758 /* TODO add VHT operational */ 2759 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos; 2760 he_6ghz_op->minrate = 6; /* 6 Mbps */ 2761 he_6ghz_op->primary = 2762 ieee80211_frequency_to_channel(chandef->chan->center_freq); 2763 he_6ghz_op->ccfs0 = 2764 ieee80211_frequency_to_channel(chandef->center_freq1); 2765 if (chandef->center_freq2) 2766 he_6ghz_op->ccfs1 = 2767 ieee80211_frequency_to_channel(chandef->center_freq2); 2768 else 2769 he_6ghz_op->ccfs1 = 0; 2770 2771 switch (chandef->width) { 2772 case NL80211_CHAN_WIDTH_320: 2773 /* 2774 * TODO: mesh operation is not defined over 6GHz 320 MHz 2775 * channels. 2776 */ 2777 WARN_ON(1); 2778 break; 2779 case NL80211_CHAN_WIDTH_160: 2780 /* Convert 160 MHz channel width to new style as interop 2781 * workaround. 2782 */ 2783 he_6ghz_op->control = 2784 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; 2785 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0; 2786 if (chandef->chan->center_freq < chandef->center_freq1) 2787 he_6ghz_op->ccfs0 -= 8; 2788 else 2789 he_6ghz_op->ccfs0 += 8; 2790 fallthrough; 2791 case NL80211_CHAN_WIDTH_80P80: 2792 he_6ghz_op->control = 2793 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ; 2794 break; 2795 case NL80211_CHAN_WIDTH_80: 2796 he_6ghz_op->control = 2797 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ; 2798 break; 2799 case NL80211_CHAN_WIDTH_40: 2800 he_6ghz_op->control = 2801 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ; 2802 break; 2803 default: 2804 he_6ghz_op->control = 2805 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ; 2806 break; 2807 } 2808 2809 pos += sizeof(struct ieee80211_he_6ghz_oper); 2810 2811 out: 2812 return pos; 2813 } 2814 2815 u8 *ieee80211_ie_build_eht_oper(u8 *pos, struct cfg80211_chan_def *chandef, 2816 const struct ieee80211_sta_eht_cap *eht_cap) 2817 2818 { 2819 const struct ieee80211_eht_mcs_nss_supp_20mhz_only *eht_mcs_nss = 2820 &eht_cap->eht_mcs_nss_supp.only_20mhz; 2821 struct ieee80211_eht_operation *eht_oper; 2822 struct ieee80211_eht_operation_info *eht_oper_info; 2823 u8 eht_oper_len = offsetof(struct ieee80211_eht_operation, optional); 2824 u8 eht_oper_info_len = 2825 offsetof(struct ieee80211_eht_operation_info, optional); 2826 u8 chan_width = 0; 2827 2828 *pos++ = WLAN_EID_EXTENSION; 2829 *pos++ = 1 + eht_oper_len + eht_oper_info_len; 2830 *pos++ = WLAN_EID_EXT_EHT_OPERATION; 2831 2832 eht_oper = (struct ieee80211_eht_operation *)pos; 2833 2834 memcpy(&eht_oper->basic_mcs_nss, eht_mcs_nss, sizeof(*eht_mcs_nss)); 2835 eht_oper->params |= IEEE80211_EHT_OPER_INFO_PRESENT; 2836 pos += eht_oper_len; 2837 2838 eht_oper_info = 2839 (struct ieee80211_eht_operation_info *)eht_oper->optional; 2840 2841 eht_oper_info->ccfs0 = 2842 ieee80211_frequency_to_channel(chandef->center_freq1); 2843 if (chandef->center_freq2) 2844 eht_oper_info->ccfs1 = 2845 ieee80211_frequency_to_channel(chandef->center_freq2); 2846 else 2847 eht_oper_info->ccfs1 = 0; 2848 2849 switch (chandef->width) { 2850 case NL80211_CHAN_WIDTH_320: 2851 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ; 2852 eht_oper_info->ccfs1 = eht_oper_info->ccfs0; 2853 if (chandef->chan->center_freq < chandef->center_freq1) 2854 eht_oper_info->ccfs0 -= 16; 2855 else 2856 eht_oper_info->ccfs0 += 16; 2857 break; 2858 case NL80211_CHAN_WIDTH_160: 2859 eht_oper_info->ccfs1 = eht_oper_info->ccfs0; 2860 if (chandef->chan->center_freq < chandef->center_freq1) 2861 eht_oper_info->ccfs0 -= 8; 2862 else 2863 eht_oper_info->ccfs0 += 8; 2864 fallthrough; 2865 case NL80211_CHAN_WIDTH_80P80: 2866 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ; 2867 break; 2868 case NL80211_CHAN_WIDTH_80: 2869 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ; 2870 break; 2871 case NL80211_CHAN_WIDTH_40: 2872 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ; 2873 break; 2874 default: 2875 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ; 2876 break; 2877 } 2878 eht_oper_info->control = chan_width; 2879 pos += eht_oper_info_len; 2880 2881 /* TODO: eht_oper_info->optional */ 2882 2883 return pos; 2884 } 2885 2886 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2887 struct cfg80211_chan_def *chandef) 2888 { 2889 enum nl80211_channel_type channel_type; 2890 2891 if (!ht_oper) 2892 return false; 2893 2894 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { 2895 case IEEE80211_HT_PARAM_CHA_SEC_NONE: 2896 channel_type = NL80211_CHAN_HT20; 2897 break; 2898 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: 2899 channel_type = NL80211_CHAN_HT40PLUS; 2900 break; 2901 case IEEE80211_HT_PARAM_CHA_SEC_BELOW: 2902 channel_type = NL80211_CHAN_HT40MINUS; 2903 break; 2904 default: 2905 return false; 2906 } 2907 2908 cfg80211_chandef_create(chandef, chandef->chan, channel_type); 2909 return true; 2910 } 2911 2912 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 2913 const struct ieee80211_vht_operation *oper, 2914 const struct ieee80211_ht_operation *htop, 2915 struct cfg80211_chan_def *chandef) 2916 { 2917 struct cfg80211_chan_def new = *chandef; 2918 int cf0, cf1; 2919 int ccfs0, ccfs1, ccfs2; 2920 int ccf0, ccf1; 2921 u32 vht_cap; 2922 bool support_80_80 = false; 2923 bool support_160 = false; 2924 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info, 2925 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK); 2926 u8 supp_chwidth = u32_get_bits(vht_cap_info, 2927 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK); 2928 2929 if (!oper || !htop) 2930 return false; 2931 2932 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap; 2933 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK | 2934 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)); 2935 support_80_80 = ((vht_cap & 2936 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) || 2937 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ && 2938 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) || 2939 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >> 2940 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1)); 2941 ccfs0 = oper->center_freq_seg0_idx; 2942 ccfs1 = oper->center_freq_seg1_idx; 2943 ccfs2 = (le16_to_cpu(htop->operation_mode) & 2944 IEEE80211_HT_OP_MODE_CCFS2_MASK) 2945 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT; 2946 2947 ccf0 = ccfs0; 2948 2949 /* if not supported, parse as though we didn't understand it */ 2950 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW)) 2951 ext_nss_bw_supp = 0; 2952 2953 /* 2954 * Cf. IEEE 802.11 Table 9-250 2955 * 2956 * We really just consider that because it's inefficient to connect 2957 * at a higher bandwidth than we'll actually be able to use. 2958 */ 2959 switch ((supp_chwidth << 4) | ext_nss_bw_supp) { 2960 default: 2961 case 0x00: 2962 ccf1 = 0; 2963 support_160 = false; 2964 support_80_80 = false; 2965 break; 2966 case 0x01: 2967 support_80_80 = false; 2968 fallthrough; 2969 case 0x02: 2970 case 0x03: 2971 ccf1 = ccfs2; 2972 break; 2973 case 0x10: 2974 ccf1 = ccfs1; 2975 break; 2976 case 0x11: 2977 case 0x12: 2978 if (!ccfs1) 2979 ccf1 = ccfs2; 2980 else 2981 ccf1 = ccfs1; 2982 break; 2983 case 0x13: 2984 case 0x20: 2985 case 0x23: 2986 ccf1 = ccfs1; 2987 break; 2988 } 2989 2990 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band); 2991 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band); 2992 2993 switch (oper->chan_width) { 2994 case IEEE80211_VHT_CHANWIDTH_USE_HT: 2995 /* just use HT information directly */ 2996 break; 2997 case IEEE80211_VHT_CHANWIDTH_80MHZ: 2998 new.width = NL80211_CHAN_WIDTH_80; 2999 new.center_freq1 = cf0; 3000 /* If needed, adjust based on the newer interop workaround. */ 3001 if (ccf1) { 3002 unsigned int diff; 3003 3004 diff = abs(ccf1 - ccf0); 3005 if ((diff == 8) && support_160) { 3006 new.width = NL80211_CHAN_WIDTH_160; 3007 new.center_freq1 = cf1; 3008 } else if ((diff > 8) && support_80_80) { 3009 new.width = NL80211_CHAN_WIDTH_80P80; 3010 new.center_freq2 = cf1; 3011 } 3012 } 3013 break; 3014 case IEEE80211_VHT_CHANWIDTH_160MHZ: 3015 /* deprecated encoding */ 3016 new.width = NL80211_CHAN_WIDTH_160; 3017 new.center_freq1 = cf0; 3018 break; 3019 case IEEE80211_VHT_CHANWIDTH_80P80MHZ: 3020 /* deprecated encoding */ 3021 new.width = NL80211_CHAN_WIDTH_80P80; 3022 new.center_freq1 = cf0; 3023 new.center_freq2 = cf1; 3024 break; 3025 default: 3026 return false; 3027 } 3028 3029 if (!cfg80211_chandef_valid(&new)) 3030 return false; 3031 3032 *chandef = new; 3033 return true; 3034 } 3035 3036 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation_info *info, 3037 struct cfg80211_chan_def *chandef) 3038 { 3039 chandef->center_freq1 = 3040 ieee80211_channel_to_frequency(info->ccfs0, 3041 chandef->chan->band); 3042 3043 switch (u8_get_bits(info->control, 3044 IEEE80211_EHT_OPER_CHAN_WIDTH)) { 3045 case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ: 3046 chandef->width = NL80211_CHAN_WIDTH_20; 3047 break; 3048 case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ: 3049 chandef->width = NL80211_CHAN_WIDTH_40; 3050 break; 3051 case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ: 3052 chandef->width = NL80211_CHAN_WIDTH_80; 3053 break; 3054 case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ: 3055 chandef->width = NL80211_CHAN_WIDTH_160; 3056 chandef->center_freq1 = 3057 ieee80211_channel_to_frequency(info->ccfs1, 3058 chandef->chan->band); 3059 break; 3060 case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ: 3061 chandef->width = NL80211_CHAN_WIDTH_320; 3062 chandef->center_freq1 = 3063 ieee80211_channel_to_frequency(info->ccfs1, 3064 chandef->chan->band); 3065 break; 3066 } 3067 } 3068 3069 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_local *local, 3070 const struct ieee80211_he_operation *he_oper, 3071 const struct ieee80211_eht_operation *eht_oper, 3072 struct cfg80211_chan_def *chandef) 3073 { 3074 struct cfg80211_chan_def he_chandef = *chandef; 3075 const struct ieee80211_he_6ghz_oper *he_6ghz_oper; 3076 u32 freq; 3077 3078 if (chandef->chan->band != NL80211_BAND_6GHZ) 3079 return true; 3080 3081 if (!he_oper) 3082 return false; 3083 3084 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper); 3085 if (!he_6ghz_oper) 3086 return false; 3087 3088 /* 3089 * The EHT operation IE does not contain the primary channel so the 3090 * primary channel frequency should be taken from the 6 GHz operation 3091 * information. 3092 */ 3093 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary, 3094 NL80211_BAND_6GHZ); 3095 he_chandef.chan = ieee80211_get_channel(local->hw.wiphy, freq); 3096 3097 if (!he_chandef.chan) 3098 return false; 3099 3100 if (!eht_oper || 3101 !(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) { 3102 switch (u8_get_bits(he_6ghz_oper->control, 3103 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) { 3104 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ: 3105 he_chandef.width = NL80211_CHAN_WIDTH_20; 3106 break; 3107 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ: 3108 he_chandef.width = NL80211_CHAN_WIDTH_40; 3109 break; 3110 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ: 3111 he_chandef.width = NL80211_CHAN_WIDTH_80; 3112 break; 3113 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ: 3114 he_chandef.width = NL80211_CHAN_WIDTH_80; 3115 if (!he_6ghz_oper->ccfs1) 3116 break; 3117 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) 3118 he_chandef.width = NL80211_CHAN_WIDTH_160; 3119 else 3120 he_chandef.width = NL80211_CHAN_WIDTH_80P80; 3121 break; 3122 } 3123 3124 if (he_chandef.width == NL80211_CHAN_WIDTH_160) { 3125 he_chandef.center_freq1 = 3126 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, 3127 NL80211_BAND_6GHZ); 3128 } else { 3129 he_chandef.center_freq1 = 3130 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0, 3131 NL80211_BAND_6GHZ); 3132 he_chandef.center_freq2 = 3133 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1, 3134 NL80211_BAND_6GHZ); 3135 } 3136 } else { 3137 ieee80211_chandef_eht_oper((const void *)eht_oper->optional, 3138 &he_chandef); 3139 } 3140 3141 if (!cfg80211_chandef_valid(&he_chandef)) 3142 return false; 3143 3144 *chandef = he_chandef; 3145 3146 return true; 3147 } 3148 3149 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 3150 struct cfg80211_chan_def *chandef) 3151 { 3152 u32 oper_freq; 3153 3154 if (!oper) 3155 return false; 3156 3157 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) { 3158 case IEEE80211_S1G_CHANWIDTH_1MHZ: 3159 chandef->width = NL80211_CHAN_WIDTH_1; 3160 break; 3161 case IEEE80211_S1G_CHANWIDTH_2MHZ: 3162 chandef->width = NL80211_CHAN_WIDTH_2; 3163 break; 3164 case IEEE80211_S1G_CHANWIDTH_4MHZ: 3165 chandef->width = NL80211_CHAN_WIDTH_4; 3166 break; 3167 case IEEE80211_S1G_CHANWIDTH_8MHZ: 3168 chandef->width = NL80211_CHAN_WIDTH_8; 3169 break; 3170 case IEEE80211_S1G_CHANWIDTH_16MHZ: 3171 chandef->width = NL80211_CHAN_WIDTH_16; 3172 break; 3173 default: 3174 return false; 3175 } 3176 3177 oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch, 3178 NL80211_BAND_S1GHZ); 3179 chandef->center_freq1 = KHZ_TO_MHZ(oper_freq); 3180 chandef->freq1_offset = oper_freq % 1000; 3181 3182 return true; 3183 } 3184 3185 int ieee80211_put_srates_elem(struct sk_buff *skb, 3186 const struct ieee80211_supported_band *sband, 3187 u32 basic_rates, u32 rate_flags, u32 masked_rates, 3188 u8 element_id) 3189 { 3190 u8 i, rates, skip; 3191 3192 rates = 0; 3193 for (i = 0; i < sband->n_bitrates; i++) { 3194 if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 3195 continue; 3196 if (masked_rates & BIT(i)) 3197 continue; 3198 rates++; 3199 } 3200 3201 if (element_id == WLAN_EID_SUPP_RATES) { 3202 rates = min_t(u8, rates, 8); 3203 skip = 0; 3204 } else { 3205 skip = 8; 3206 if (rates <= skip) 3207 return 0; 3208 rates -= skip; 3209 } 3210 3211 if (skb_tailroom(skb) < rates + 2) 3212 return -ENOBUFS; 3213 3214 skb_put_u8(skb, element_id); 3215 skb_put_u8(skb, rates); 3216 3217 for (i = 0; i < sband->n_bitrates && rates; i++) { 3218 int rate; 3219 u8 basic; 3220 3221 if ((rate_flags & sband->bitrates[i].flags) != rate_flags) 3222 continue; 3223 if (masked_rates & BIT(i)) 3224 continue; 3225 3226 if (skip > 0) { 3227 skip--; 3228 continue; 3229 } 3230 3231 basic = basic_rates & BIT(i) ? 0x80 : 0; 3232 3233 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 5); 3234 skb_put_u8(skb, basic | (u8)rate); 3235 rates--; 3236 } 3237 3238 WARN(rates > 0, "rates confused: rates:%d, element:%d\n", 3239 rates, element_id); 3240 3241 return 0; 3242 } 3243 3244 int ieee80211_ave_rssi(struct ieee80211_vif *vif) 3245 { 3246 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3247 3248 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 3249 return 0; 3250 3251 return -ewma_beacon_signal_read(&sdata->deflink.u.mgd.ave_beacon_signal); 3252 } 3253 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); 3254 3255 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) 3256 { 3257 if (!mcs) 3258 return 1; 3259 3260 /* TODO: consider rx_highest */ 3261 3262 if (mcs->rx_mask[3]) 3263 return 4; 3264 if (mcs->rx_mask[2]) 3265 return 3; 3266 if (mcs->rx_mask[1]) 3267 return 2; 3268 return 1; 3269 } 3270 3271 /** 3272 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame 3273 * @local: mac80211 hw info struct 3274 * @status: RX status 3275 * @mpdu_len: total MPDU length (including FCS) 3276 * @mpdu_offset: offset into MPDU to calculate timestamp at 3277 * 3278 * This function calculates the RX timestamp at the given MPDU offset, taking 3279 * into account what the RX timestamp was. An offset of 0 will just normalize 3280 * the timestamp to TSF at beginning of MPDU reception. 3281 * 3282 * Returns: the calculated timestamp 3283 */ 3284 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 3285 struct ieee80211_rx_status *status, 3286 unsigned int mpdu_len, 3287 unsigned int mpdu_offset) 3288 { 3289 u64 ts = status->mactime; 3290 bool mactime_plcp_start; 3291 struct rate_info ri; 3292 u16 rate; 3293 u8 n_ltf; 3294 3295 if (WARN_ON(!ieee80211_have_rx_timestamp(status))) 3296 return 0; 3297 3298 mactime_plcp_start = (status->flag & RX_FLAG_MACTIME) == 3299 RX_FLAG_MACTIME_PLCP_START; 3300 3301 memset(&ri, 0, sizeof(ri)); 3302 3303 ri.bw = status->bw; 3304 3305 /* Fill cfg80211 rate info */ 3306 switch (status->encoding) { 3307 case RX_ENC_EHT: 3308 ri.flags |= RATE_INFO_FLAGS_EHT_MCS; 3309 ri.mcs = status->rate_idx; 3310 ri.nss = status->nss; 3311 ri.eht_ru_alloc = status->eht.ru; 3312 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3313 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3314 /* TODO/FIXME: is this right? handle other PPDUs */ 3315 if (mactime_plcp_start) { 3316 mpdu_offset += 2; 3317 ts += 36; 3318 } 3319 break; 3320 case RX_ENC_HE: 3321 ri.flags |= RATE_INFO_FLAGS_HE_MCS; 3322 ri.mcs = status->rate_idx; 3323 ri.nss = status->nss; 3324 ri.he_ru_alloc = status->he_ru; 3325 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3326 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3327 3328 /* 3329 * See P802.11ax_D6.0, section 27.3.4 for 3330 * VHT PPDU format. 3331 */ 3332 if (mactime_plcp_start) { 3333 mpdu_offset += 2; 3334 ts += 36; 3335 3336 /* 3337 * TODO: 3338 * For HE MU PPDU, add the HE-SIG-B. 3339 * For HE ER PPDU, add 8us for the HE-SIG-A. 3340 * For HE TB PPDU, add 4us for the HE-STF. 3341 * Add the HE-LTF durations - variable. 3342 */ 3343 } 3344 3345 break; 3346 case RX_ENC_HT: 3347 ri.mcs = status->rate_idx; 3348 ri.flags |= RATE_INFO_FLAGS_MCS; 3349 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3350 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3351 3352 /* 3353 * See P802.11REVmd_D3.0, section 19.3.2 for 3354 * HT PPDU format. 3355 */ 3356 if (mactime_plcp_start) { 3357 mpdu_offset += 2; 3358 if (status->enc_flags & RX_ENC_FLAG_HT_GF) 3359 ts += 24; 3360 else 3361 ts += 32; 3362 3363 /* 3364 * Add Data HT-LTFs per streams 3365 * TODO: add Extension HT-LTFs, 4us per LTF 3366 */ 3367 n_ltf = ((ri.mcs >> 3) & 3) + 1; 3368 n_ltf = n_ltf == 3 ? 4 : n_ltf; 3369 ts += n_ltf * 4; 3370 } 3371 3372 break; 3373 case RX_ENC_VHT: 3374 ri.flags |= RATE_INFO_FLAGS_VHT_MCS; 3375 ri.mcs = status->rate_idx; 3376 ri.nss = status->nss; 3377 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI) 3378 ri.flags |= RATE_INFO_FLAGS_SHORT_GI; 3379 3380 /* 3381 * See P802.11REVmd_D3.0, section 21.3.2 for 3382 * VHT PPDU format. 3383 */ 3384 if (mactime_plcp_start) { 3385 mpdu_offset += 2; 3386 ts += 36; 3387 3388 /* 3389 * Add VHT-LTFs per streams 3390 */ 3391 n_ltf = (ri.nss != 1) && (ri.nss % 2) ? 3392 ri.nss + 1 : ri.nss; 3393 ts += 4 * n_ltf; 3394 } 3395 3396 break; 3397 default: 3398 WARN_ON(1); 3399 fallthrough; 3400 case RX_ENC_LEGACY: { 3401 struct ieee80211_supported_band *sband; 3402 3403 sband = local->hw.wiphy->bands[status->band]; 3404 ri.legacy = sband->bitrates[status->rate_idx].bitrate; 3405 3406 if (mactime_plcp_start) { 3407 if (status->band == NL80211_BAND_5GHZ) { 3408 ts += 20; 3409 mpdu_offset += 2; 3410 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) { 3411 ts += 96; 3412 } else { 3413 ts += 192; 3414 } 3415 } 3416 break; 3417 } 3418 } 3419 3420 rate = cfg80211_calculate_bitrate(&ri); 3421 if (WARN_ONCE(!rate, 3422 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n", 3423 (unsigned long long)status->flag, status->rate_idx, 3424 status->nss)) 3425 return 0; 3426 3427 /* rewind from end of MPDU */ 3428 if ((status->flag & RX_FLAG_MACTIME) == RX_FLAG_MACTIME_END) 3429 ts -= mpdu_len * 8 * 10 / rate; 3430 3431 ts += mpdu_offset * 8 * 10 / rate; 3432 3433 return ts; 3434 } 3435 3436 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) 3437 { 3438 struct ieee80211_sub_if_data *sdata; 3439 struct cfg80211_chan_def chandef; 3440 3441 lockdep_assert_wiphy(local->hw.wiphy); 3442 3443 list_for_each_entry(sdata, &local->interfaces, list) { 3444 /* it might be waiting for the local->mtx, but then 3445 * by the time it gets it, sdata->wdev.cac_started 3446 * will no longer be true 3447 */ 3448 wiphy_delayed_work_cancel(local->hw.wiphy, 3449 &sdata->deflink.dfs_cac_timer_work); 3450 3451 if (sdata->wdev.cac_started) { 3452 chandef = sdata->vif.bss_conf.chanreq.oper; 3453 ieee80211_link_release_channel(&sdata->deflink); 3454 cfg80211_cac_event(sdata->dev, 3455 &chandef, 3456 NL80211_RADAR_CAC_ABORTED, 3457 GFP_KERNEL); 3458 } 3459 } 3460 } 3461 3462 void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy, 3463 struct wiphy_work *work) 3464 { 3465 struct ieee80211_local *local = 3466 container_of(work, struct ieee80211_local, radar_detected_work); 3467 struct cfg80211_chan_def chandef = local->hw.conf.chandef; 3468 struct ieee80211_chanctx *ctx; 3469 int num_chanctx = 0; 3470 3471 lockdep_assert_wiphy(local->hw.wiphy); 3472 3473 list_for_each_entry(ctx, &local->chanctx_list, list) { 3474 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) 3475 continue; 3476 3477 num_chanctx++; 3478 chandef = ctx->conf.def; 3479 } 3480 3481 ieee80211_dfs_cac_cancel(local); 3482 3483 if (num_chanctx > 1) 3484 /* XXX: multi-channel is not supported yet */ 3485 WARN_ON(1); 3486 else 3487 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); 3488 } 3489 3490 void ieee80211_radar_detected(struct ieee80211_hw *hw) 3491 { 3492 struct ieee80211_local *local = hw_to_local(hw); 3493 3494 trace_api_radar_detected(local); 3495 3496 wiphy_work_queue(hw->wiphy, &local->radar_detected_work); 3497 } 3498 EXPORT_SYMBOL(ieee80211_radar_detected); 3499 3500 void ieee80211_chandef_downgrade(struct cfg80211_chan_def *c, 3501 struct ieee80211_conn_settings *conn) 3502 { 3503 enum nl80211_chan_width new_primary_width; 3504 struct ieee80211_conn_settings _ignored = {}; 3505 3506 /* allow passing NULL if caller doesn't care */ 3507 if (!conn) 3508 conn = &_ignored; 3509 3510 again: 3511 /* no-HT indicates nothing to do */ 3512 new_primary_width = NL80211_CHAN_WIDTH_20_NOHT; 3513 3514 switch (c->width) { 3515 default: 3516 case NL80211_CHAN_WIDTH_20_NOHT: 3517 WARN_ON_ONCE(1); 3518 fallthrough; 3519 case NL80211_CHAN_WIDTH_20: 3520 c->width = NL80211_CHAN_WIDTH_20_NOHT; 3521 conn->mode = IEEE80211_CONN_MODE_LEGACY; 3522 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3523 c->punctured = 0; 3524 break; 3525 case NL80211_CHAN_WIDTH_40: 3526 c->width = NL80211_CHAN_WIDTH_20; 3527 c->center_freq1 = c->chan->center_freq; 3528 if (conn->mode == IEEE80211_CONN_MODE_VHT) 3529 conn->mode = IEEE80211_CONN_MODE_HT; 3530 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3531 c->punctured = 0; 3532 break; 3533 case NL80211_CHAN_WIDTH_80: 3534 new_primary_width = NL80211_CHAN_WIDTH_40; 3535 if (conn->mode == IEEE80211_CONN_MODE_VHT) 3536 conn->mode = IEEE80211_CONN_MODE_HT; 3537 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_40; 3538 break; 3539 case NL80211_CHAN_WIDTH_80P80: 3540 c->center_freq2 = 0; 3541 c->width = NL80211_CHAN_WIDTH_80; 3542 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80; 3543 break; 3544 case NL80211_CHAN_WIDTH_160: 3545 new_primary_width = NL80211_CHAN_WIDTH_80; 3546 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80; 3547 break; 3548 case NL80211_CHAN_WIDTH_320: 3549 new_primary_width = NL80211_CHAN_WIDTH_160; 3550 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_160; 3551 break; 3552 case NL80211_CHAN_WIDTH_1: 3553 case NL80211_CHAN_WIDTH_2: 3554 case NL80211_CHAN_WIDTH_4: 3555 case NL80211_CHAN_WIDTH_8: 3556 case NL80211_CHAN_WIDTH_16: 3557 WARN_ON_ONCE(1); 3558 /* keep c->width */ 3559 conn->mode = IEEE80211_CONN_MODE_S1G; 3560 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3561 break; 3562 case NL80211_CHAN_WIDTH_5: 3563 case NL80211_CHAN_WIDTH_10: 3564 WARN_ON_ONCE(1); 3565 /* keep c->width */ 3566 conn->mode = IEEE80211_CONN_MODE_LEGACY; 3567 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20; 3568 break; 3569 } 3570 3571 if (new_primary_width != NL80211_CHAN_WIDTH_20_NOHT) { 3572 c->center_freq1 = cfg80211_chandef_primary(c, new_primary_width, 3573 &c->punctured); 3574 c->width = new_primary_width; 3575 } 3576 3577 /* 3578 * With an 80 MHz channel, we might have the puncturing in the primary 3579 * 40 Mhz channel, but that's not valid when downgraded to 40 MHz width. 3580 * In that case, downgrade again. 3581 */ 3582 if (!cfg80211_chandef_valid(c) && c->punctured) 3583 goto again; 3584 3585 WARN_ON_ONCE(!cfg80211_chandef_valid(c)); 3586 } 3587 3588 /* 3589 * Returns true if smps_mode_new is strictly more restrictive than 3590 * smps_mode_old. 3591 */ 3592 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 3593 enum ieee80211_smps_mode smps_mode_new) 3594 { 3595 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC || 3596 smps_mode_new == IEEE80211_SMPS_AUTOMATIC)) 3597 return false; 3598 3599 switch (smps_mode_old) { 3600 case IEEE80211_SMPS_STATIC: 3601 return false; 3602 case IEEE80211_SMPS_DYNAMIC: 3603 return smps_mode_new == IEEE80211_SMPS_STATIC; 3604 case IEEE80211_SMPS_OFF: 3605 return smps_mode_new != IEEE80211_SMPS_OFF; 3606 default: 3607 WARN_ON(1); 3608 } 3609 3610 return false; 3611 } 3612 3613 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 3614 struct cfg80211_csa_settings *csa_settings) 3615 { 3616 struct sk_buff *skb; 3617 struct ieee80211_mgmt *mgmt; 3618 struct ieee80211_local *local = sdata->local; 3619 int freq; 3620 int hdr_len = offsetofend(struct ieee80211_mgmt, 3621 u.action.u.chan_switch); 3622 u8 *pos; 3623 3624 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3625 sdata->vif.type != NL80211_IFTYPE_MESH_POINT) 3626 return -EOPNOTSUPP; 3627 3628 skb = dev_alloc_skb(local->tx_headroom + hdr_len + 3629 5 + /* channel switch announcement element */ 3630 3 + /* secondary channel offset element */ 3631 5 + /* wide bandwidth channel switch announcement */ 3632 8); /* mesh channel switch parameters element */ 3633 if (!skb) 3634 return -ENOMEM; 3635 3636 skb_reserve(skb, local->tx_headroom); 3637 mgmt = skb_put_zero(skb, hdr_len); 3638 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 3639 IEEE80211_STYPE_ACTION); 3640 3641 eth_broadcast_addr(mgmt->da); 3642 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 3643 if (ieee80211_vif_is_mesh(&sdata->vif)) { 3644 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); 3645 } else { 3646 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 3647 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 3648 } 3649 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; 3650 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH; 3651 pos = skb_put(skb, 5); 3652 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */ 3653 *pos++ = 3; /* IE length */ 3654 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */ 3655 freq = csa_settings->chandef.chan->center_freq; 3656 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */ 3657 *pos++ = csa_settings->count; /* count */ 3658 3659 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) { 3660 enum nl80211_channel_type ch_type; 3661 3662 skb_put(skb, 3); 3663 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */ 3664 *pos++ = 1; /* IE length */ 3665 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef); 3666 if (ch_type == NL80211_CHAN_HT40PLUS) 3667 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; 3668 else 3669 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW; 3670 } 3671 3672 if (ieee80211_vif_is_mesh(&sdata->vif)) { 3673 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3674 3675 skb_put(skb, 8); 3676 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ 3677 *pos++ = 6; /* IE length */ 3678 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */ 3679 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */ 3680 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR; 3681 *pos++ |= csa_settings->block_tx ? 3682 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00; 3683 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */ 3684 pos += 2; 3685 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ 3686 pos += 2; 3687 } 3688 3689 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 || 3690 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 || 3691 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) { 3692 skb_put(skb, 5); 3693 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef); 3694 } 3695 3696 ieee80211_tx_skb(sdata, skb); 3697 return 0; 3698 } 3699 3700 static bool 3701 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i) 3702 { 3703 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1); 3704 int skip; 3705 3706 if (end > 0) 3707 return false; 3708 3709 /* One shot NOA */ 3710 if (data->count[i] == 1) 3711 return false; 3712 3713 if (data->desc[i].interval == 0) 3714 return false; 3715 3716 /* End time is in the past, check for repetitions */ 3717 skip = DIV_ROUND_UP(-end, data->desc[i].interval); 3718 if (data->count[i] < 255) { 3719 if (data->count[i] <= skip) { 3720 data->count[i] = 0; 3721 return false; 3722 } 3723 3724 data->count[i] -= skip; 3725 } 3726 3727 data->desc[i].start += skip * data->desc[i].interval; 3728 3729 return true; 3730 } 3731 3732 static bool 3733 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf, 3734 s32 *offset) 3735 { 3736 bool ret = false; 3737 int i; 3738 3739 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3740 s32 cur; 3741 3742 if (!data->count[i]) 3743 continue; 3744 3745 if (ieee80211_extend_noa_desc(data, tsf + *offset, i)) 3746 ret = true; 3747 3748 cur = data->desc[i].start - tsf; 3749 if (cur > *offset) 3750 continue; 3751 3752 cur = data->desc[i].start + data->desc[i].duration - tsf; 3753 if (cur > *offset) 3754 *offset = cur; 3755 } 3756 3757 return ret; 3758 } 3759 3760 static u32 3761 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf) 3762 { 3763 s32 offset = 0; 3764 int tries = 0; 3765 /* 3766 * arbitrary limit, used to avoid infinite loops when combined NoA 3767 * descriptors cover the full time period. 3768 */ 3769 int max_tries = 5; 3770 3771 ieee80211_extend_absent_time(data, tsf, &offset); 3772 do { 3773 if (!ieee80211_extend_absent_time(data, tsf, &offset)) 3774 break; 3775 3776 tries++; 3777 } while (tries < max_tries); 3778 3779 return offset; 3780 } 3781 3782 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf) 3783 { 3784 u32 next_offset = BIT(31) - 1; 3785 int i; 3786 3787 data->absent = 0; 3788 data->has_next_tsf = false; 3789 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3790 s32 start; 3791 3792 if (!data->count[i]) 3793 continue; 3794 3795 ieee80211_extend_noa_desc(data, tsf, i); 3796 start = data->desc[i].start - tsf; 3797 if (start <= 0) 3798 data->absent |= BIT(i); 3799 3800 if (next_offset > start) 3801 next_offset = start; 3802 3803 data->has_next_tsf = true; 3804 } 3805 3806 if (data->absent) 3807 next_offset = ieee80211_get_noa_absent_time(data, tsf); 3808 3809 data->next_tsf = tsf + next_offset; 3810 } 3811 EXPORT_SYMBOL(ieee80211_update_p2p_noa); 3812 3813 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, 3814 struct ieee80211_noa_data *data, u32 tsf) 3815 { 3816 int ret = 0; 3817 int i; 3818 3819 memset(data, 0, sizeof(*data)); 3820 3821 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) { 3822 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i]; 3823 3824 if (!desc->count || !desc->duration) 3825 continue; 3826 3827 data->count[i] = desc->count; 3828 data->desc[i].start = le32_to_cpu(desc->start_time); 3829 data->desc[i].duration = le32_to_cpu(desc->duration); 3830 data->desc[i].interval = le32_to_cpu(desc->interval); 3831 3832 if (data->count[i] > 1 && 3833 data->desc[i].interval < data->desc[i].duration) 3834 continue; 3835 3836 ieee80211_extend_noa_desc(data, tsf, i); 3837 ret++; 3838 } 3839 3840 if (ret) 3841 ieee80211_update_p2p_noa(data, tsf); 3842 3843 return ret; 3844 } 3845 EXPORT_SYMBOL(ieee80211_parse_p2p_noa); 3846 3847 void ieee80211_recalc_dtim(struct ieee80211_local *local, 3848 struct ieee80211_sub_if_data *sdata) 3849 { 3850 u64 tsf = drv_get_tsf(local, sdata); 3851 u64 dtim_count = 0; 3852 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; 3853 u8 dtim_period = sdata->vif.bss_conf.dtim_period; 3854 struct ps_data *ps; 3855 u8 bcns_from_dtim; 3856 3857 if (tsf == -1ULL || !beacon_int || !dtim_period) 3858 return; 3859 3860 if (sdata->vif.type == NL80211_IFTYPE_AP || 3861 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { 3862 if (!sdata->bss) 3863 return; 3864 3865 ps = &sdata->bss->ps; 3866 } else if (ieee80211_vif_is_mesh(&sdata->vif)) { 3867 ps = &sdata->u.mesh.ps; 3868 } else { 3869 return; 3870 } 3871 3872 /* 3873 * actually finds last dtim_count, mac80211 will update in 3874 * __beacon_add_tim(). 3875 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period 3876 */ 3877 do_div(tsf, beacon_int); 3878 bcns_from_dtim = do_div(tsf, dtim_period); 3879 /* just had a DTIM */ 3880 if (!bcns_from_dtim) 3881 dtim_count = 0; 3882 else 3883 dtim_count = dtim_period - bcns_from_dtim; 3884 3885 ps->dtim_count = dtim_count; 3886 } 3887 3888 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, 3889 struct ieee80211_chanctx *ctx) 3890 { 3891 struct ieee80211_link_data *link; 3892 u8 radar_detect = 0; 3893 3894 lockdep_assert_wiphy(local->hw.wiphy); 3895 3896 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)) 3897 return 0; 3898 3899 list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list) 3900 if (link->reserved_radar_required) 3901 radar_detect |= BIT(link->reserved.oper.width); 3902 3903 /* 3904 * An in-place reservation context should not have any assigned vifs 3905 * until it replaces the other context. 3906 */ 3907 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER && 3908 !list_empty(&ctx->assigned_links)); 3909 3910 list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) { 3911 if (!link->radar_required) 3912 continue; 3913 3914 radar_detect |= 3915 BIT(link->conf->chanreq.oper.width); 3916 } 3917 3918 return radar_detect; 3919 } 3920 3921 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 3922 const struct cfg80211_chan_def *chandef, 3923 enum ieee80211_chanctx_mode chanmode, 3924 u8 radar_detect) 3925 { 3926 struct ieee80211_local *local = sdata->local; 3927 struct ieee80211_sub_if_data *sdata_iter; 3928 enum nl80211_iftype iftype = sdata->wdev.iftype; 3929 struct ieee80211_chanctx *ctx; 3930 int total = 1; 3931 struct iface_combination_params params = { 3932 .radar_detect = radar_detect, 3933 }; 3934 3935 lockdep_assert_wiphy(local->hw.wiphy); 3936 3937 if (WARN_ON(hweight32(radar_detect) > 1)) 3938 return -EINVAL; 3939 3940 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED && 3941 !chandef->chan)) 3942 return -EINVAL; 3943 3944 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) 3945 return -EINVAL; 3946 3947 if (sdata->vif.type == NL80211_IFTYPE_AP || 3948 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) { 3949 /* 3950 * always passing this is harmless, since it'll be the 3951 * same value that cfg80211 finds if it finds the same 3952 * interface ... and that's always allowed 3953 */ 3954 params.new_beacon_int = sdata->vif.bss_conf.beacon_int; 3955 } 3956 3957 /* Always allow software iftypes */ 3958 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) { 3959 if (radar_detect) 3960 return -EINVAL; 3961 return 0; 3962 } 3963 3964 if (chandef) 3965 params.num_different_channels = 1; 3966 3967 if (iftype != NL80211_IFTYPE_UNSPECIFIED) 3968 params.iftype_num[iftype] = 1; 3969 3970 list_for_each_entry(ctx, &local->chanctx_list, list) { 3971 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 3972 continue; 3973 params.radar_detect |= 3974 ieee80211_chanctx_radar_detect(local, ctx); 3975 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { 3976 params.num_different_channels++; 3977 continue; 3978 } 3979 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED && 3980 cfg80211_chandef_compatible(chandef, 3981 &ctx->conf.def)) 3982 continue; 3983 params.num_different_channels++; 3984 } 3985 3986 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) { 3987 struct wireless_dev *wdev_iter; 3988 3989 wdev_iter = &sdata_iter->wdev; 3990 3991 if (sdata_iter == sdata || 3992 !ieee80211_sdata_running(sdata_iter) || 3993 cfg80211_iftype_allowed(local->hw.wiphy, 3994 wdev_iter->iftype, 0, 1)) 3995 continue; 3996 3997 params.iftype_num[wdev_iter->iftype]++; 3998 total++; 3999 } 4000 4001 if (total == 1 && !params.radar_detect) 4002 return 0; 4003 4004 return cfg80211_check_combinations(local->hw.wiphy, ¶ms); 4005 } 4006 4007 static void 4008 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, 4009 void *data) 4010 { 4011 u32 *max_num_different_channels = data; 4012 4013 *max_num_different_channels = max(*max_num_different_channels, 4014 c->num_different_channels); 4015 } 4016 4017 int ieee80211_max_num_channels(struct ieee80211_local *local) 4018 { 4019 struct ieee80211_sub_if_data *sdata; 4020 struct ieee80211_chanctx *ctx; 4021 u32 max_num_different_channels = 1; 4022 int err; 4023 struct iface_combination_params params = {0}; 4024 4025 lockdep_assert_wiphy(local->hw.wiphy); 4026 4027 list_for_each_entry(ctx, &local->chanctx_list, list) { 4028 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) 4029 continue; 4030 4031 params.num_different_channels++; 4032 4033 params.radar_detect |= 4034 ieee80211_chanctx_radar_detect(local, ctx); 4035 } 4036 4037 list_for_each_entry_rcu(sdata, &local->interfaces, list) 4038 params.iftype_num[sdata->wdev.iftype]++; 4039 4040 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms, 4041 ieee80211_iter_max_chans, 4042 &max_num_different_channels); 4043 if (err < 0) 4044 return err; 4045 4046 return max_num_different_channels; 4047 } 4048 4049 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 4050 struct ieee80211_sta_s1g_cap *caps, 4051 struct sk_buff *skb) 4052 { 4053 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4054 struct ieee80211_s1g_cap s1g_capab; 4055 u8 *pos; 4056 int i; 4057 4058 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 4059 return; 4060 4061 if (!caps->s1g) 4062 return; 4063 4064 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap)); 4065 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs)); 4066 4067 /* override the capability info */ 4068 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) { 4069 u8 mask = ifmgd->s1g_capa_mask.capab_info[i]; 4070 4071 s1g_capab.capab_info[i] &= ~mask; 4072 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask; 4073 } 4074 4075 /* then MCS and NSS set */ 4076 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) { 4077 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i]; 4078 4079 s1g_capab.supp_mcs_nss[i] &= ~mask; 4080 s1g_capab.supp_mcs_nss[i] |= 4081 ifmgd->s1g_capa.supp_mcs_nss[i] & mask; 4082 } 4083 4084 pos = skb_put(skb, 2 + sizeof(s1g_capab)); 4085 *pos++ = WLAN_EID_S1G_CAPABILITIES; 4086 *pos++ = sizeof(s1g_capab); 4087 4088 memcpy(pos, &s1g_capab, sizeof(s1g_capab)); 4089 } 4090 4091 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 4092 struct sk_buff *skb) 4093 { 4094 u8 *pos = skb_put(skb, 3); 4095 4096 *pos++ = WLAN_EID_AID_REQUEST; 4097 *pos++ = 1; 4098 *pos++ = 0; 4099 } 4100 4101 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo) 4102 { 4103 *buf++ = WLAN_EID_VENDOR_SPECIFIC; 4104 *buf++ = 7; /* len */ 4105 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ 4106 *buf++ = 0x50; 4107 *buf++ = 0xf2; 4108 *buf++ = 2; /* WME */ 4109 *buf++ = 0; /* WME info */ 4110 *buf++ = 1; /* WME ver */ 4111 *buf++ = qosinfo; /* U-APSD no in use */ 4112 4113 return buf; 4114 } 4115 4116 void ieee80211_txq_get_depth(struct ieee80211_txq *txq, 4117 unsigned long *frame_cnt, 4118 unsigned long *byte_cnt) 4119 { 4120 struct txq_info *txqi = to_txq_info(txq); 4121 u32 frag_cnt = 0, frag_bytes = 0; 4122 struct sk_buff *skb; 4123 4124 skb_queue_walk(&txqi->frags, skb) { 4125 frag_cnt++; 4126 frag_bytes += skb->len; 4127 } 4128 4129 if (frame_cnt) 4130 *frame_cnt = txqi->tin.backlog_packets + frag_cnt; 4131 4132 if (byte_cnt) 4133 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes; 4134 } 4135 EXPORT_SYMBOL(ieee80211_txq_get_depth); 4136 4137 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = { 4138 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO, 4139 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI, 4140 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE, 4141 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK 4142 }; 4143 4144 u16 ieee80211_encode_usf(int listen_interval) 4145 { 4146 static const int listen_int_usf[] = { 1, 10, 1000, 10000 }; 4147 u16 ui, usf = 0; 4148 4149 /* find greatest USF */ 4150 while (usf < IEEE80211_MAX_USF) { 4151 if (listen_interval % listen_int_usf[usf + 1]) 4152 break; 4153 usf += 1; 4154 } 4155 ui = listen_interval / listen_int_usf[usf]; 4156 4157 /* error if there is a remainder. Should've been checked by user */ 4158 WARN_ON_ONCE(ui > IEEE80211_MAX_UI); 4159 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) | 4160 FIELD_PREP(LISTEN_INT_UI, ui); 4161 4162 return (u16) listen_interval; 4163 } 4164 4165 /* this may return more than ieee80211_put_eht_cap() will need */ 4166 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata) 4167 { 4168 const struct ieee80211_sta_he_cap *he_cap; 4169 const struct ieee80211_sta_eht_cap *eht_cap; 4170 struct ieee80211_supported_band *sband; 4171 bool is_ap; 4172 u8 n; 4173 4174 sband = ieee80211_get_sband(sdata); 4175 if (!sband) 4176 return 0; 4177 4178 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 4179 eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); 4180 if (!he_cap || !eht_cap) 4181 return 0; 4182 4183 is_ap = sdata->vif.type == NL80211_IFTYPE_AP; 4184 4185 n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 4186 &eht_cap->eht_cap_elem, 4187 is_ap); 4188 return 2 + 1 + 4189 sizeof(eht_cap->eht_cap_elem) + n + 4190 ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], 4191 eht_cap->eht_cap_elem.phy_cap_info); 4192 return 0; 4193 } 4194 4195 int ieee80211_put_eht_cap(struct sk_buff *skb, 4196 struct ieee80211_sub_if_data *sdata, 4197 const struct ieee80211_supported_band *sband, 4198 const struct ieee80211_conn_settings *conn) 4199 { 4200 const struct ieee80211_sta_he_cap *he_cap = 4201 ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); 4202 const struct ieee80211_sta_eht_cap *eht_cap = 4203 ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); 4204 bool for_ap = sdata->vif.type == NL80211_IFTYPE_AP; 4205 struct ieee80211_eht_cap_elem_fixed fixed; 4206 struct ieee80211_he_cap_elem he; 4207 u8 mcs_nss_len, ppet_len; 4208 u8 orig_mcs_nss_len; 4209 u8 ie_len; 4210 4211 if (!conn) 4212 conn = &ieee80211_conn_settings_unlimited; 4213 4214 /* Make sure we have place for the IE */ 4215 if (!he_cap || !eht_cap) 4216 return 0; 4217 4218 orig_mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, 4219 &eht_cap->eht_cap_elem, 4220 for_ap); 4221 4222 ieee80211_get_adjusted_he_cap(conn, he_cap, &he); 4223 4224 fixed = eht_cap->eht_cap_elem; 4225 4226 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_80) 4227 fixed.phy_cap_info[6] &= 4228 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_80MHZ; 4229 4230 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) { 4231 fixed.phy_cap_info[1] &= 4232 ~IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK; 4233 fixed.phy_cap_info[2] &= 4234 ~IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK; 4235 fixed.phy_cap_info[6] &= 4236 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_160MHZ; 4237 } 4238 4239 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_320) { 4240 fixed.phy_cap_info[0] &= 4241 ~IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ; 4242 fixed.phy_cap_info[1] &= 4243 ~IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK; 4244 fixed.phy_cap_info[2] &= 4245 ~IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK; 4246 fixed.phy_cap_info[6] &= 4247 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_320MHZ; 4248 } 4249 4250 if (conn->bw_limit == IEEE80211_CONN_BW_LIMIT_20) 4251 fixed.phy_cap_info[0] &= 4252 ~IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ; 4253 4254 mcs_nss_len = ieee80211_eht_mcs_nss_size(&he, &fixed, for_ap); 4255 ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], 4256 fixed.phy_cap_info); 4257 4258 ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len; 4259 if (skb_tailroom(skb) < ie_len) 4260 return -ENOBUFS; 4261 4262 skb_put_u8(skb, WLAN_EID_EXTENSION); 4263 skb_put_u8(skb, ie_len - 2); 4264 skb_put_u8(skb, WLAN_EID_EXT_EHT_CAPABILITY); 4265 skb_put_data(skb, &fixed, sizeof(fixed)); 4266 4267 if (mcs_nss_len == 4 && orig_mcs_nss_len != 4) { 4268 /* 4269 * If the (non-AP) STA became 20 MHz only, then convert from 4270 * <=80 to 20-MHz-only format, where MCSes are indicated in 4271 * the groups 0-7, 8-9, 10-11, 12-13 rather than just 0-9, 4272 * 10-11, 12-13. Thus, use 0-9 for 0-7 and 8-9. 4273 */ 4274 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss); 4275 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss); 4276 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs11_max_nss); 4277 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs13_max_nss); 4278 } else { 4279 skb_put_data(skb, &eht_cap->eht_mcs_nss_supp, mcs_nss_len); 4280 } 4281 4282 if (ppet_len) 4283 skb_put_data(skb, &eht_cap->eht_ppe_thres, ppet_len); 4284 4285 return 0; 4286 } 4287 4288 const char *ieee80211_conn_mode_str(enum ieee80211_conn_mode mode) 4289 { 4290 static const char * const modes[] = { 4291 [IEEE80211_CONN_MODE_S1G] = "S1G", 4292 [IEEE80211_CONN_MODE_LEGACY] = "legacy", 4293 [IEEE80211_CONN_MODE_HT] = "HT", 4294 [IEEE80211_CONN_MODE_VHT] = "VHT", 4295 [IEEE80211_CONN_MODE_HE] = "HE", 4296 [IEEE80211_CONN_MODE_EHT] = "EHT", 4297 }; 4298 4299 if (WARN_ON(mode >= ARRAY_SIZE(modes))) 4300 return "<out of range>"; 4301 4302 return modes[mode] ?: "<missing string>"; 4303 } 4304 4305 enum ieee80211_conn_bw_limit 4306 ieee80211_min_bw_limit_from_chandef(struct cfg80211_chan_def *chandef) 4307 { 4308 switch (chandef->width) { 4309 case NL80211_CHAN_WIDTH_20_NOHT: 4310 case NL80211_CHAN_WIDTH_20: 4311 return IEEE80211_CONN_BW_LIMIT_20; 4312 case NL80211_CHAN_WIDTH_40: 4313 return IEEE80211_CONN_BW_LIMIT_40; 4314 case NL80211_CHAN_WIDTH_80: 4315 return IEEE80211_CONN_BW_LIMIT_80; 4316 case NL80211_CHAN_WIDTH_80P80: 4317 case NL80211_CHAN_WIDTH_160: 4318 return IEEE80211_CONN_BW_LIMIT_160; 4319 case NL80211_CHAN_WIDTH_320: 4320 return IEEE80211_CONN_BW_LIMIT_320; 4321 default: 4322 WARN(1, "unhandled chandef width %d\n", chandef->width); 4323 return IEEE80211_CONN_BW_LIMIT_20; 4324 } 4325 } 4326