1 // SPDX-License-Identifier: GPL-2.0-only
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) 2018-2022 Intel Corporation
11 * utilities for mac80211
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>
28 #include "ieee80211_i.h"
29 #include "driver-ops.h"
36 /* privid for wiphys to determine whether they belong to us or not */
37 const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
39 struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
41 struct ieee80211_local *local;
43 local = wiphy_priv(wiphy);
46 EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
48 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
49 enum nl80211_iftype type)
51 __le16 fc = hdr->frame_control;
53 if (ieee80211_is_data(fc)) {
54 if (len < 24) /* drop incorrect hdr len (data) */
57 if (ieee80211_has_a4(fc))
59 if (ieee80211_has_tods(fc))
61 if (ieee80211_has_fromds(fc))
67 if (ieee80211_is_s1g_beacon(fc)) {
68 struct ieee80211_ext *ext = (void *) hdr;
70 return ext->u.s1g_beacon.sa;
73 if (ieee80211_is_mgmt(fc)) {
74 if (len < 24) /* drop incorrect hdr len (mgmt) */
79 if (ieee80211_is_ctl(fc)) {
80 if (ieee80211_is_pspoll(fc))
83 if (ieee80211_is_back_req(fc)) {
85 case NL80211_IFTYPE_STATION:
87 case NL80211_IFTYPE_AP:
88 case NL80211_IFTYPE_AP_VLAN:
91 break; /* fall through to the return */
98 EXPORT_SYMBOL(ieee80211_get_bssid);
100 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
103 struct ieee80211_hdr *hdr;
105 skb_queue_walk(&tx->skbs, skb) {
106 hdr = (struct ieee80211_hdr *) skb->data;
107 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
111 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
112 int rate, int erp, int short_preamble,
117 /* calculate duration (in microseconds, rounded up to next higher
118 * integer if it includes a fractional microsecond) to send frame of
119 * len bytes (does not include FCS) at the given rate. Duration will
122 * rate is in 100 kbps, so divident is multiplied by 10 in the
123 * DIV_ROUND_UP() operations.
125 * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
126 * is assumed to be 0 otherwise.
129 if (band == NL80211_BAND_5GHZ || erp) {
133 * N_DBPS = DATARATE x 4
134 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
135 * (16 = SIGNAL time, 6 = tail bits)
136 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
139 * 802.11a - 18.5.2: aSIFSTime = 16 usec
140 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
141 * signal ext = 6 usec
143 dur = 16; /* SIFS + signal ext */
144 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
145 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
147 /* IEEE 802.11-2012 18.3.2.4: all values above are:
148 * * times 4 for 5 MHz
149 * * times 2 for 10 MHz
153 /* rates should already consider the channel bandwidth,
154 * don't apply divisor again.
156 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
157 4 * rate); /* T_SYM x N_SYM */
160 * 802.11b or 802.11g with 802.11b compatibility:
161 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
162 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
164 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
165 * aSIFSTime = 10 usec
166 * aPreambleLength = 144 usec or 72 usec with short preamble
167 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
169 dur = 10; /* aSIFSTime = 10 usec */
170 dur += short_preamble ? (72 + 24) : (144 + 48);
172 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
178 /* Exported duration function for driver use */
179 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
180 struct ieee80211_vif *vif,
181 enum nl80211_band band,
183 struct ieee80211_rate *rate)
185 struct ieee80211_sub_if_data *sdata;
188 bool short_preamble = false;
192 sdata = vif_to_sdata(vif);
193 short_preamble = sdata->vif.bss_conf.use_short_preamble;
194 if (sdata->deflink.operating_11g_mode)
195 erp = rate->flags & IEEE80211_RATE_ERP_G;
196 shift = ieee80211_vif_get_shift(vif);
199 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
200 short_preamble, shift);
202 return cpu_to_le16(dur);
204 EXPORT_SYMBOL(ieee80211_generic_frame_duration);
206 __le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
207 struct ieee80211_vif *vif, size_t frame_len,
208 const struct ieee80211_tx_info *frame_txctl)
210 struct ieee80211_local *local = hw_to_local(hw);
211 struct ieee80211_rate *rate;
212 struct ieee80211_sub_if_data *sdata;
214 int erp, shift = 0, bitrate;
216 struct ieee80211_supported_band *sband;
218 sband = local->hw.wiphy->bands[frame_txctl->band];
220 short_preamble = false;
222 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
226 sdata = vif_to_sdata(vif);
227 short_preamble = sdata->vif.bss_conf.use_short_preamble;
228 if (sdata->deflink.operating_11g_mode)
229 erp = rate->flags & IEEE80211_RATE_ERP_G;
230 shift = ieee80211_vif_get_shift(vif);
233 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
236 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
237 erp, short_preamble, shift);
238 /* Data frame duration */
239 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
240 erp, short_preamble, shift);
242 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
243 erp, short_preamble, shift);
245 return cpu_to_le16(dur);
247 EXPORT_SYMBOL(ieee80211_rts_duration);
249 __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
250 struct ieee80211_vif *vif,
252 const struct ieee80211_tx_info *frame_txctl)
254 struct ieee80211_local *local = hw_to_local(hw);
255 struct ieee80211_rate *rate;
256 struct ieee80211_sub_if_data *sdata;
258 int erp, shift = 0, bitrate;
260 struct ieee80211_supported_band *sband;
262 sband = local->hw.wiphy->bands[frame_txctl->band];
264 short_preamble = false;
266 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
269 sdata = vif_to_sdata(vif);
270 short_preamble = sdata->vif.bss_conf.use_short_preamble;
271 if (sdata->deflink.operating_11g_mode)
272 erp = rate->flags & IEEE80211_RATE_ERP_G;
273 shift = ieee80211_vif_get_shift(vif);
276 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
278 /* Data frame duration */
279 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
280 erp, short_preamble, shift);
281 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
283 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
284 erp, short_preamble, shift);
287 return cpu_to_le16(dur);
289 EXPORT_SYMBOL(ieee80211_ctstoself_duration);
291 static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
293 struct ieee80211_local *local = sdata->local;
294 struct ieee80211_vif *vif = &sdata->vif;
295 struct fq *fq = &local->fq;
296 struct ps_data *ps = NULL;
297 struct txq_info *txqi;
298 struct sta_info *sta;
302 spin_lock(&fq->lock);
304 if (!test_bit(SDATA_STATE_RUNNING, &sdata->state))
307 if (sdata->vif.type == NL80211_IFTYPE_AP)
308 ps = &sdata->bss->ps;
310 sdata->vif.txqs_stopped[ac] = false;
312 list_for_each_entry_rcu(sta, &local->sta_list, list) {
313 if (sdata != sta->sdata)
316 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
317 struct ieee80211_txq *txq = sta->sta.txq[i];
322 txqi = to_txq_info(txq);
327 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX,
331 spin_unlock(&fq->lock);
332 drv_wake_tx_queue(local, txqi);
333 spin_lock(&fq->lock);
340 txqi = to_txq_info(vif->txq);
342 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, &txqi->flags) ||
343 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
346 spin_unlock(&fq->lock);
348 drv_wake_tx_queue(local, txqi);
352 spin_unlock(&fq->lock);
357 __releases(&local->queue_stop_reason_lock)
358 __acquires(&local->queue_stop_reason_lock)
359 _ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
361 struct ieee80211_sub_if_data *sdata;
362 int n_acs = IEEE80211_NUM_ACS;
367 if (local->hw.queues < IEEE80211_NUM_ACS)
370 for (i = 0; i < local->hw.queues; i++) {
371 if (local->queue_stop_reasons[i])
374 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
375 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
378 for (ac = 0; ac < n_acs; ac++) {
379 int ac_queue = sdata->vif.hw_queue[ac];
382 sdata->vif.cab_queue == i)
383 __ieee80211_wake_txqs(sdata, ac);
386 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
392 void ieee80211_wake_txqs(struct tasklet_struct *t)
394 struct ieee80211_local *local = from_tasklet(local, t,
398 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
399 _ieee80211_wake_txqs(local, &flags);
400 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
403 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
405 struct ieee80211_sub_if_data *sdata;
406 int n_acs = IEEE80211_NUM_ACS;
408 if (local->ops->wake_tx_queue)
411 if (local->hw.queues < IEEE80211_NUM_ACS)
414 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
420 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
421 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
424 for (ac = 0; ac < n_acs; ac++) {
425 int ac_queue = sdata->vif.hw_queue[ac];
427 if (ac_queue == queue ||
428 (sdata->vif.cab_queue == queue &&
429 local->queue_stop_reasons[ac_queue] == 0 &&
430 skb_queue_empty(&local->pending[ac_queue])))
431 netif_wake_subqueue(sdata->dev, ac);
436 static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
437 enum queue_stop_reason reason,
439 unsigned long *flags)
441 struct ieee80211_local *local = hw_to_local(hw);
443 trace_wake_queue(local, queue, reason);
445 if (WARN_ON(queue >= hw->queues))
448 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
452 local->q_stop_reasons[queue][reason] = 0;
454 local->q_stop_reasons[queue][reason]--;
455 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
456 local->q_stop_reasons[queue][reason] = 0;
459 if (local->q_stop_reasons[queue][reason] == 0)
460 __clear_bit(reason, &local->queue_stop_reasons[queue]);
462 if (local->queue_stop_reasons[queue] != 0)
463 /* someone still has this queue stopped */
466 if (skb_queue_empty(&local->pending[queue])) {
468 ieee80211_propagate_queue_wake(local, queue);
471 tasklet_schedule(&local->tx_pending_tasklet);
474 * Calling _ieee80211_wake_txqs here can be a problem because it may
475 * release queue_stop_reason_lock which has been taken by
476 * __ieee80211_wake_queue's caller. It is certainly not very nice to
477 * release someone's lock, but it is fine because all the callers of
478 * __ieee80211_wake_queue call it right before releasing the lock.
480 if (local->ops->wake_tx_queue) {
481 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
482 tasklet_schedule(&local->wake_txqs_tasklet);
484 _ieee80211_wake_txqs(local, flags);
488 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
489 enum queue_stop_reason reason,
492 struct ieee80211_local *local = hw_to_local(hw);
495 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
496 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
497 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
500 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
502 ieee80211_wake_queue_by_reason(hw, queue,
503 IEEE80211_QUEUE_STOP_REASON_DRIVER,
506 EXPORT_SYMBOL(ieee80211_wake_queue);
508 static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
509 enum queue_stop_reason reason,
512 struct ieee80211_local *local = hw_to_local(hw);
513 struct ieee80211_sub_if_data *sdata;
514 int n_acs = IEEE80211_NUM_ACS;
516 trace_stop_queue(local, queue, reason);
518 if (WARN_ON(queue >= hw->queues))
522 local->q_stop_reasons[queue][reason] = 1;
524 local->q_stop_reasons[queue][reason]++;
526 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
529 if (local->hw.queues < IEEE80211_NUM_ACS)
533 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
539 for (ac = 0; ac < n_acs; ac++) {
540 if (sdata->vif.hw_queue[ac] == queue ||
541 sdata->vif.cab_queue == queue) {
542 if (!local->ops->wake_tx_queue) {
543 netif_stop_subqueue(sdata->dev, ac);
546 spin_lock(&local->fq.lock);
547 sdata->vif.txqs_stopped[ac] = true;
548 spin_unlock(&local->fq.lock);
555 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
556 enum queue_stop_reason reason,
559 struct ieee80211_local *local = hw_to_local(hw);
562 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
563 __ieee80211_stop_queue(hw, queue, reason, refcounted);
564 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
567 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
569 ieee80211_stop_queue_by_reason(hw, queue,
570 IEEE80211_QUEUE_STOP_REASON_DRIVER,
573 EXPORT_SYMBOL(ieee80211_stop_queue);
575 void ieee80211_add_pending_skb(struct ieee80211_local *local,
578 struct ieee80211_hw *hw = &local->hw;
580 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
581 int queue = info->hw_queue;
583 if (WARN_ON(!info->control.vif)) {
584 ieee80211_free_txskb(&local->hw, skb);
588 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
589 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
591 __skb_queue_tail(&local->pending[queue], skb);
592 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
594 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
597 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
598 struct sk_buff_head *skbs)
600 struct ieee80211_hw *hw = &local->hw;
605 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
606 while ((skb = skb_dequeue(skbs))) {
607 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
609 if (WARN_ON(!info->control.vif)) {
610 ieee80211_free_txskb(&local->hw, skb);
614 queue = info->hw_queue;
616 __ieee80211_stop_queue(hw, queue,
617 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
620 __skb_queue_tail(&local->pending[queue], skb);
623 for (i = 0; i < hw->queues; i++)
624 __ieee80211_wake_queue(hw, i,
625 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
627 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
630 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
631 unsigned long queues,
632 enum queue_stop_reason reason,
635 struct ieee80211_local *local = hw_to_local(hw);
639 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
641 for_each_set_bit(i, &queues, hw->queues)
642 __ieee80211_stop_queue(hw, i, reason, refcounted);
644 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
647 void ieee80211_stop_queues(struct ieee80211_hw *hw)
649 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
650 IEEE80211_QUEUE_STOP_REASON_DRIVER,
653 EXPORT_SYMBOL(ieee80211_stop_queues);
655 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
657 struct ieee80211_local *local = hw_to_local(hw);
661 if (WARN_ON(queue >= hw->queues))
664 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
665 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
666 &local->queue_stop_reasons[queue]);
667 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
670 EXPORT_SYMBOL(ieee80211_queue_stopped);
672 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
673 unsigned long queues,
674 enum queue_stop_reason reason,
677 struct ieee80211_local *local = hw_to_local(hw);
681 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
683 for_each_set_bit(i, &queues, hw->queues)
684 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
686 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
689 void ieee80211_wake_queues(struct ieee80211_hw *hw)
691 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
692 IEEE80211_QUEUE_STOP_REASON_DRIVER,
695 EXPORT_SYMBOL(ieee80211_wake_queues);
698 ieee80211_get_vif_queues(struct ieee80211_local *local,
699 struct ieee80211_sub_if_data *sdata)
703 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
708 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
709 queues |= BIT(sdata->vif.hw_queue[ac]);
710 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
711 queues |= BIT(sdata->vif.cab_queue);
714 queues = BIT(local->hw.queues) - 1;
720 void __ieee80211_flush_queues(struct ieee80211_local *local,
721 struct ieee80211_sub_if_data *sdata,
722 unsigned int queues, bool drop)
724 if (!local->ops->flush)
728 * If no queue was set, or if the HW doesn't support
729 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
731 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
732 queues = ieee80211_get_vif_queues(local, sdata);
734 ieee80211_stop_queues_by_reason(&local->hw, queues,
735 IEEE80211_QUEUE_STOP_REASON_FLUSH,
738 drv_flush(local, sdata, queues, drop);
740 ieee80211_wake_queues_by_reason(&local->hw, queues,
741 IEEE80211_QUEUE_STOP_REASON_FLUSH,
745 void ieee80211_flush_queues(struct ieee80211_local *local,
746 struct ieee80211_sub_if_data *sdata, bool drop)
748 __ieee80211_flush_queues(local, sdata, 0, drop);
751 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
752 struct ieee80211_sub_if_data *sdata,
753 enum queue_stop_reason reason)
755 ieee80211_stop_queues_by_reason(&local->hw,
756 ieee80211_get_vif_queues(local, sdata),
760 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
761 struct ieee80211_sub_if_data *sdata,
762 enum queue_stop_reason reason)
764 ieee80211_wake_queues_by_reason(&local->hw,
765 ieee80211_get_vif_queues(local, sdata),
769 static void __iterate_interfaces(struct ieee80211_local *local,
771 void (*iterator)(void *data, u8 *mac,
772 struct ieee80211_vif *vif),
775 struct ieee80211_sub_if_data *sdata;
776 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
778 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
779 switch (sdata->vif.type) {
780 case NL80211_IFTYPE_MONITOR:
781 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
784 case NL80211_IFTYPE_AP_VLAN:
789 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
790 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
792 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) &&
793 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
795 if (ieee80211_sdata_running(sdata) || !active_only)
796 iterator(data, sdata->vif.addr,
800 sdata = rcu_dereference_check(local->monitor_sdata,
801 lockdep_is_held(&local->iflist_mtx) ||
802 lockdep_is_held(&local->hw.wiphy->mtx));
804 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
805 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
806 iterator(data, sdata->vif.addr, &sdata->vif);
809 void ieee80211_iterate_interfaces(
810 struct ieee80211_hw *hw, u32 iter_flags,
811 void (*iterator)(void *data, u8 *mac,
812 struct ieee80211_vif *vif),
815 struct ieee80211_local *local = hw_to_local(hw);
817 mutex_lock(&local->iflist_mtx);
818 __iterate_interfaces(local, iter_flags, iterator, data);
819 mutex_unlock(&local->iflist_mtx);
821 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
823 void ieee80211_iterate_active_interfaces_atomic(
824 struct ieee80211_hw *hw, u32 iter_flags,
825 void (*iterator)(void *data, u8 *mac,
826 struct ieee80211_vif *vif),
829 struct ieee80211_local *local = hw_to_local(hw);
832 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
836 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
838 void ieee80211_iterate_active_interfaces_mtx(
839 struct ieee80211_hw *hw, u32 iter_flags,
840 void (*iterator)(void *data, u8 *mac,
841 struct ieee80211_vif *vif),
844 struct ieee80211_local *local = hw_to_local(hw);
846 lockdep_assert_wiphy(hw->wiphy);
848 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
851 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx);
853 static void __iterate_stations(struct ieee80211_local *local,
854 void (*iterator)(void *data,
855 struct ieee80211_sta *sta),
858 struct sta_info *sta;
860 list_for_each_entry_rcu(sta, &local->sta_list, list) {
864 iterator(data, &sta->sta);
868 void ieee80211_iterate_stations(struct ieee80211_hw *hw,
869 void (*iterator)(void *data,
870 struct ieee80211_sta *sta),
873 struct ieee80211_local *local = hw_to_local(hw);
875 mutex_lock(&local->sta_mtx);
876 __iterate_stations(local, iterator, data);
877 mutex_unlock(&local->sta_mtx);
879 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations);
881 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
882 void (*iterator)(void *data,
883 struct ieee80211_sta *sta),
886 struct ieee80211_local *local = hw_to_local(hw);
889 __iterate_stations(local, iterator, data);
892 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
894 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
896 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
898 if (!ieee80211_sdata_running(sdata) ||
899 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
903 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
905 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
910 return &vif_to_sdata(vif)->wdev;
912 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
915 * Nothing should have been stuffed into the workqueue during
916 * the suspend->resume cycle. Since we can't check each caller
917 * of this function if we are already quiescing / suspended,
918 * check here and don't WARN since this can actually happen when
919 * the rx path (for example) is racing against __ieee80211_suspend
920 * and suspending / quiescing was set after the rx path checked
923 static bool ieee80211_can_queue_work(struct ieee80211_local *local)
925 if (local->quiescing || (local->suspended && !local->resuming)) {
926 pr_warn("queueing ieee80211 work while going to suspend\n");
933 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
935 struct ieee80211_local *local = hw_to_local(hw);
937 if (!ieee80211_can_queue_work(local))
940 queue_work(local->workqueue, work);
942 EXPORT_SYMBOL(ieee80211_queue_work);
944 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
945 struct delayed_work *dwork,
948 struct ieee80211_local *local = hw_to_local(hw);
950 if (!ieee80211_can_queue_work(local))
953 queue_delayed_work(local->workqueue, dwork, delay);
955 EXPORT_SYMBOL(ieee80211_queue_delayed_work);
957 static void ieee80211_parse_extension_element(u32 *crc,
958 const struct element *elem,
959 struct ieee802_11_elems *elems)
961 const void *data = elem->data + 1;
967 len = elem->datalen - 1;
969 switch (elem->data[0]) {
970 case WLAN_EID_EXT_HE_MU_EDCA:
971 if (len >= sizeof(*elems->mu_edca_param_set)) {
972 elems->mu_edca_param_set = data;
974 *crc = crc32_be(*crc, (void *)elem,
978 case WLAN_EID_EXT_HE_CAPABILITY:
979 if (ieee80211_he_capa_size_ok(data, len)) {
980 elems->he_cap = data;
981 elems->he_cap_len = len;
984 case WLAN_EID_EXT_HE_OPERATION:
985 if (len >= sizeof(*elems->he_operation) &&
986 len >= ieee80211_he_oper_size(data) - 1) {
988 *crc = crc32_be(*crc, (void *)elem,
990 elems->he_operation = data;
993 case WLAN_EID_EXT_UORA:
995 elems->uora_element = data;
997 case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME:
999 elems->max_channel_switch_time = data;
1001 case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION:
1002 if (len >= sizeof(*elems->mbssid_config_ie))
1003 elems->mbssid_config_ie = data;
1005 case WLAN_EID_EXT_HE_SPR:
1006 if (len >= sizeof(*elems->he_spr) &&
1007 len >= ieee80211_he_spr_size(data))
1008 elems->he_spr = data;
1010 case WLAN_EID_EXT_HE_6GHZ_CAPA:
1011 if (len >= sizeof(*elems->he_6ghz_capa))
1012 elems->he_6ghz_capa = data;
1014 case WLAN_EID_EXT_EHT_CAPABILITY:
1015 if (ieee80211_eht_capa_size_ok(elems->he_cap,
1017 elems->eht_cap = data;
1018 elems->eht_cap_len = len;
1021 case WLAN_EID_EXT_EHT_OPERATION:
1022 if (ieee80211_eht_oper_size_ok(data, len))
1023 elems->eht_operation = data;
1025 case WLAN_EID_EXT_EHT_MULTI_LINK:
1026 if (ieee80211_mle_size_ok(data, len))
1027 elems->multi_link = (void *)data;
1033 _ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params,
1034 struct ieee802_11_elems *elems,
1035 const struct element *check_inherit)
1037 const struct element *elem;
1038 bool calc_crc = params->filter != 0;
1039 DECLARE_BITMAP(seen_elems, 256);
1040 u32 crc = params->crc;
1043 bitmap_zero(seen_elems, 256);
1045 for_each_element(elem, params->start, params->len) {
1046 bool elem_parse_failed;
1048 u8 elen = elem->datalen;
1049 const u8 *pos = elem->data;
1051 if (check_inherit &&
1052 !cfg80211_is_element_inherited(elem,
1058 case WLAN_EID_SUPP_RATES:
1059 case WLAN_EID_FH_PARAMS:
1060 case WLAN_EID_DS_PARAMS:
1061 case WLAN_EID_CF_PARAMS:
1063 case WLAN_EID_IBSS_PARAMS:
1064 case WLAN_EID_CHALLENGE:
1066 case WLAN_EID_ERP_INFO:
1067 case WLAN_EID_EXT_SUPP_RATES:
1068 case WLAN_EID_HT_CAPABILITY:
1069 case WLAN_EID_HT_OPERATION:
1070 case WLAN_EID_VHT_CAPABILITY:
1071 case WLAN_EID_VHT_OPERATION:
1072 case WLAN_EID_MESH_ID:
1073 case WLAN_EID_MESH_CONFIG:
1074 case WLAN_EID_PEER_MGMT:
1079 case WLAN_EID_CHANNEL_SWITCH:
1080 case WLAN_EID_EXT_CHANSWITCH_ANN:
1081 case WLAN_EID_COUNTRY:
1082 case WLAN_EID_PWR_CONSTRAINT:
1083 case WLAN_EID_TIMEOUT_INTERVAL:
1084 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1085 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1086 case WLAN_EID_CHAN_SWITCH_PARAM:
1087 case WLAN_EID_EXT_CAPABILITY:
1088 case WLAN_EID_CHAN_SWITCH_TIMING:
1089 case WLAN_EID_LINK_ID:
1090 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1092 case WLAN_EID_S1G_BCN_COMPAT:
1093 case WLAN_EID_S1G_CAPABILITIES:
1094 case WLAN_EID_S1G_OPERATION:
1095 case WLAN_EID_AID_RESPONSE:
1096 case WLAN_EID_S1G_SHORT_BCN_INTERVAL:
1098 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
1099 * that if the content gets bigger it might be needed more than once
1101 if (test_bit(id, seen_elems)) {
1102 elems->parse_error = true;
1108 if (calc_crc && id < 64 && (params->filter & (1ULL << id)))
1109 crc = crc32_be(crc, pos - 2, elen + 2);
1111 elem_parse_failed = false;
1114 case WLAN_EID_LINK_ID:
1115 if (elen + 2 < sizeof(struct ieee80211_tdls_lnkie)) {
1116 elem_parse_failed = true;
1119 elems->lnk_id = (void *)(pos - 2);
1121 case WLAN_EID_CHAN_SWITCH_TIMING:
1122 if (elen < sizeof(struct ieee80211_ch_switch_timing)) {
1123 elem_parse_failed = true;
1126 elems->ch_sw_timing = (void *)pos;
1128 case WLAN_EID_EXT_CAPABILITY:
1129 elems->ext_capab = pos;
1130 elems->ext_capab_len = elen;
1134 elems->ssid_len = elen;
1136 case WLAN_EID_SUPP_RATES:
1137 elems->supp_rates = pos;
1138 elems->supp_rates_len = elen;
1140 case WLAN_EID_DS_PARAMS:
1142 elems->ds_params = pos;
1144 elem_parse_failed = true;
1147 if (elen >= sizeof(struct ieee80211_tim_ie)) {
1148 elems->tim = (void *)pos;
1149 elems->tim_len = elen;
1151 elem_parse_failed = true;
1153 case WLAN_EID_VENDOR_SPECIFIC:
1154 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1156 /* Microsoft OUI (00:50:F2) */
1159 crc = crc32_be(crc, pos - 2, elen + 2);
1161 if (elen >= 5 && pos[3] == 2) {
1162 /* OUI Type 2 - WMM IE */
1164 elems->wmm_info = pos;
1165 elems->wmm_info_len = elen;
1166 } else if (pos[4] == 1) {
1167 elems->wmm_param = pos;
1168 elems->wmm_param_len = elen;
1175 elems->rsn_len = elen;
1177 case WLAN_EID_ERP_INFO:
1179 elems->erp_info = pos;
1181 elem_parse_failed = true;
1183 case WLAN_EID_EXT_SUPP_RATES:
1184 elems->ext_supp_rates = pos;
1185 elems->ext_supp_rates_len = elen;
1187 case WLAN_EID_HT_CAPABILITY:
1188 if (elen >= sizeof(struct ieee80211_ht_cap))
1189 elems->ht_cap_elem = (void *)pos;
1191 elem_parse_failed = true;
1193 case WLAN_EID_HT_OPERATION:
1194 if (elen >= sizeof(struct ieee80211_ht_operation))
1195 elems->ht_operation = (void *)pos;
1197 elem_parse_failed = true;
1199 case WLAN_EID_VHT_CAPABILITY:
1200 if (elen >= sizeof(struct ieee80211_vht_cap))
1201 elems->vht_cap_elem = (void *)pos;
1203 elem_parse_failed = true;
1205 case WLAN_EID_VHT_OPERATION:
1206 if (elen >= sizeof(struct ieee80211_vht_operation)) {
1207 elems->vht_operation = (void *)pos;
1209 crc = crc32_be(crc, pos - 2, elen + 2);
1212 elem_parse_failed = true;
1214 case WLAN_EID_OPMODE_NOTIF:
1216 elems->opmode_notif = pos;
1218 crc = crc32_be(crc, pos - 2, elen + 2);
1221 elem_parse_failed = true;
1223 case WLAN_EID_MESH_ID:
1224 elems->mesh_id = pos;
1225 elems->mesh_id_len = elen;
1227 case WLAN_EID_MESH_CONFIG:
1228 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1229 elems->mesh_config = (void *)pos;
1231 elem_parse_failed = true;
1233 case WLAN_EID_PEER_MGMT:
1234 elems->peering = pos;
1235 elems->peering_len = elen;
1237 case WLAN_EID_MESH_AWAKE_WINDOW:
1239 elems->awake_window = (void *)pos;
1243 elems->preq_len = elen;
1247 elems->prep_len = elen;
1251 elems->perr_len = elen;
1254 if (elen >= sizeof(struct ieee80211_rann_ie))
1255 elems->rann = (void *)pos;
1257 elem_parse_failed = true;
1259 case WLAN_EID_CHANNEL_SWITCH:
1260 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1261 elem_parse_failed = true;
1264 elems->ch_switch_ie = (void *)pos;
1266 case WLAN_EID_EXT_CHANSWITCH_ANN:
1267 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1268 elem_parse_failed = true;
1271 elems->ext_chansw_ie = (void *)pos;
1273 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1274 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1275 elem_parse_failed = true;
1278 elems->sec_chan_offs = (void *)pos;
1280 case WLAN_EID_CHAN_SWITCH_PARAM:
1282 sizeof(*elems->mesh_chansw_params_ie)) {
1283 elem_parse_failed = true;
1286 elems->mesh_chansw_params_ie = (void *)pos;
1288 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1289 if (!params->action ||
1290 elen < sizeof(*elems->wide_bw_chansw_ie)) {
1291 elem_parse_failed = true;
1294 elems->wide_bw_chansw_ie = (void *)pos;
1296 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1297 if (params->action) {
1298 elem_parse_failed = true;
1302 * This is a bit tricky, but as we only care about
1303 * the wide bandwidth channel switch element, so
1304 * just parse it out manually.
1306 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1309 if (ie[1] >= sizeof(*elems->wide_bw_chansw_ie))
1310 elems->wide_bw_chansw_ie =
1313 elem_parse_failed = true;
1316 case WLAN_EID_COUNTRY:
1317 elems->country_elem = pos;
1318 elems->country_elem_len = elen;
1320 case WLAN_EID_PWR_CONSTRAINT:
1322 elem_parse_failed = true;
1325 elems->pwr_constr_elem = pos;
1327 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1328 /* Lots of different options exist, but we only care
1329 * about the Dynamic Transmit Power Control element.
1330 * First check for the Cisco OUI, then for the DTPC
1334 elem_parse_failed = true;
1338 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1339 pos[2] != 0x96 || pos[3] != 0x00)
1343 elem_parse_failed = true;
1348 crc = crc32_be(crc, pos - 2, elen + 2);
1350 elems->cisco_dtpc_elem = pos;
1352 case WLAN_EID_ADDBA_EXT:
1353 if (elen < sizeof(struct ieee80211_addba_ext_ie)) {
1354 elem_parse_failed = true;
1357 elems->addba_ext_ie = (void *)pos;
1359 case WLAN_EID_TIMEOUT_INTERVAL:
1360 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1361 elems->timeout_int = (void *)pos;
1363 elem_parse_failed = true;
1365 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1366 if (elen >= sizeof(*elems->max_idle_period_ie))
1367 elems->max_idle_period_ie = (void *)pos;
1371 elems->rsnx_len = elen;
1373 case WLAN_EID_TX_POWER_ENVELOPE:
1375 elen > sizeof(struct ieee80211_tx_pwr_env))
1378 if (elems->tx_pwr_env_num >= ARRAY_SIZE(elems->tx_pwr_env))
1381 elems->tx_pwr_env[elems->tx_pwr_env_num] = (void *)pos;
1382 elems->tx_pwr_env_len[elems->tx_pwr_env_num] = elen;
1383 elems->tx_pwr_env_num++;
1385 case WLAN_EID_EXTENSION:
1386 ieee80211_parse_extension_element(calc_crc ?
1390 case WLAN_EID_S1G_CAPABILITIES:
1391 if (elen >= sizeof(*elems->s1g_capab))
1392 elems->s1g_capab = (void *)pos;
1394 elem_parse_failed = true;
1396 case WLAN_EID_S1G_OPERATION:
1397 if (elen == sizeof(*elems->s1g_oper))
1398 elems->s1g_oper = (void *)pos;
1400 elem_parse_failed = true;
1402 case WLAN_EID_S1G_BCN_COMPAT:
1403 if (elen == sizeof(*elems->s1g_bcn_compat))
1404 elems->s1g_bcn_compat = (void *)pos;
1406 elem_parse_failed = true;
1408 case WLAN_EID_AID_RESPONSE:
1409 if (elen == sizeof(struct ieee80211_aid_response_ie))
1410 elems->aid_resp = (void *)pos;
1412 elem_parse_failed = true;
1418 if (elem_parse_failed)
1419 elems->parse_error = true;
1421 __set_bit(id, seen_elems);
1424 if (!for_each_element_completed(elem, params->start, params->len))
1425 elems->parse_error = true;
1430 static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1431 struct ieee802_11_elems *elems,
1432 struct cfg80211_bss *bss,
1433 u8 *nontransmitted_profile)
1435 const struct element *elem, *sub;
1436 size_t profile_len = 0;
1439 if (!bss || !bss->transmitted_bss)
1442 for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1443 if (elem->datalen < 2)
1446 for_each_element(sub, elem->data + 1, elem->datalen - 1) {
1447 u8 new_bssid[ETH_ALEN];
1450 if (sub->id != 0 || sub->datalen < 4) {
1451 /* not a valid BSS profile */
1455 if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1456 sub->data[1] != 2) {
1457 /* The first element of the
1458 * Nontransmitted BSSID Profile is not
1459 * the Nontransmitted BSSID Capability
1465 memset(nontransmitted_profile, 0, len);
1466 profile_len = cfg80211_merge_profile(start, len,
1469 nontransmitted_profile,
1472 /* found a Nontransmitted BSSID Profile */
1473 index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
1474 nontransmitted_profile,
1476 if (!index || index[1] < 1 || index[2] == 0) {
1477 /* Invalid MBSSID Index element */
1481 cfg80211_gen_new_bssid(bss->transmitted_bss->bssid,
1485 if (ether_addr_equal(new_bssid, bss->bssid)) {
1487 elems->bssid_index_len = index[1];
1488 elems->bssid_index = (void *)&index[2];
1494 return found ? profile_len : 0;
1497 struct ieee802_11_elems *
1498 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params)
1500 struct ieee802_11_elems *elems;
1501 const struct element *non_inherit = NULL;
1502 u8 *nontransmitted_profile;
1503 int nontransmitted_profile_len = 0;
1505 elems = kzalloc(sizeof(*elems), GFP_ATOMIC);
1508 elems->ie_start = params->start;
1509 elems->total_len = params->len;
1511 nontransmitted_profile = kmalloc(params->len, GFP_ATOMIC);
1512 if (nontransmitted_profile) {
1513 nontransmitted_profile_len =
1514 ieee802_11_find_bssid_profile(params->start, params->len,
1516 nontransmitted_profile);
1518 cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1519 nontransmitted_profile,
1520 nontransmitted_profile_len);
1523 elems->crc = _ieee802_11_parse_elems_full(params, elems, non_inherit);
1525 /* Override with nontransmitted profile, if found */
1526 if (nontransmitted_profile_len) {
1527 struct ieee80211_elems_parse_params sub = {
1528 .start = nontransmitted_profile,
1529 .len = nontransmitted_profile_len,
1530 .action = params->action,
1531 .link_id = params->link_id,
1534 _ieee802_11_parse_elems_full(&sub, elems, NULL);
1537 if (elems->tim && !elems->parse_error) {
1538 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1540 elems->dtim_period = tim_ie->dtim_period;
1541 elems->dtim_count = tim_ie->dtim_count;
1544 /* Override DTIM period and count if needed */
1545 if (elems->bssid_index &&
1546 elems->bssid_index_len >=
1547 offsetofend(struct ieee80211_bssid_index, dtim_period))
1548 elems->dtim_period = elems->bssid_index->dtim_period;
1550 if (elems->bssid_index &&
1551 elems->bssid_index_len >=
1552 offsetofend(struct ieee80211_bssid_index, dtim_count))
1553 elems->dtim_count = elems->bssid_index->dtim_count;
1555 kfree(nontransmitted_profile);
1560 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1561 struct ieee80211_tx_queue_params
1564 struct ieee80211_chanctx_conf *chanctx_conf;
1565 const struct ieee80211_reg_rule *rrule;
1566 const struct ieee80211_wmm_ac *wmm_ac;
1567 u16 center_freq = 0;
1569 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1570 sdata->vif.type != NL80211_IFTYPE_STATION)
1574 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
1576 center_freq = chanctx_conf->def.chan->center_freq;
1583 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1585 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
1590 if (sdata->vif.type == NL80211_IFTYPE_AP)
1591 wmm_ac = &rrule->wmm_rule.ap[ac];
1593 wmm_ac = &rrule->wmm_rule.client[ac];
1594 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1595 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1596 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
1597 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
1601 void ieee80211_set_wmm_default(struct ieee80211_link_data *link,
1602 bool bss_notify, bool enable_qos)
1604 struct ieee80211_sub_if_data *sdata = link->sdata;
1605 struct ieee80211_local *local = sdata->local;
1606 struct ieee80211_tx_queue_params qparam;
1607 struct ieee80211_chanctx_conf *chanctx_conf;
1610 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
1613 if (!local->ops->conf_tx)
1616 if (local->hw.queues < IEEE80211_NUM_ACS)
1619 memset(&qparam, 0, sizeof(qparam));
1622 chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
1623 use_11b = (chanctx_conf &&
1624 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
1625 !link->operating_11g_mode;
1628 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1630 /* Set defaults according to 802.11-2007 Table 7-37 */
1637 /* Confiure old 802.11b/g medium access rules. */
1638 qparam.cw_max = aCWmax;
1639 qparam.cw_min = aCWmin;
1643 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1644 /* Update if QoS is enabled. */
1647 case IEEE80211_AC_BK:
1648 qparam.cw_max = aCWmax;
1649 qparam.cw_min = aCWmin;
1656 /* never happens but let's not leave undefined */
1658 case IEEE80211_AC_BE:
1659 qparam.cw_max = aCWmax;
1660 qparam.cw_min = aCWmin;
1667 case IEEE80211_AC_VI:
1668 qparam.cw_max = aCWmin;
1669 qparam.cw_min = (aCWmin + 1) / 2 - 1;
1673 qparam.txop = 6016/32;
1675 qparam.txop = 3008/32;
1682 case IEEE80211_AC_VO:
1683 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1684 qparam.cw_min = (aCWmin + 1) / 4 - 1;
1688 qparam.txop = 3264/32;
1690 qparam.txop = 1504/32;
1695 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
1697 qparam.uapsd = false;
1699 link->tx_conf[ac] = qparam;
1700 drv_conf_tx(local, link, ac, &qparam);
1703 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1704 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1705 sdata->vif.type != NL80211_IFTYPE_NAN) {
1706 link->conf->qos = enable_qos;
1708 ieee80211_link_info_change_notify(sdata, link,
1713 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1714 u16 transaction, u16 auth_alg, u16 status,
1715 const u8 *extra, size_t extra_len, const u8 *da,
1716 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1719 struct ieee80211_local *local = sdata->local;
1720 struct sk_buff *skb;
1721 struct ieee80211_mgmt *mgmt;
1722 bool multi_link = sdata->vif.valid_links;
1727 struct ieee80211_multi_link_elem ml;
1728 struct ieee80211_mle_basic_common_info basic;
1730 .id = WLAN_EID_EXTENSION,
1731 .len = sizeof(mle) - 2,
1732 .ext_id = WLAN_EID_EXT_EHT_MULTI_LINK,
1733 .ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC),
1734 .basic.len = sizeof(mle.basic),
1738 memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN);
1740 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
1741 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1742 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN +
1743 multi_link * sizeof(mle));
1747 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
1749 mgmt = skb_put_zero(skb, 24 + 6);
1750 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1751 IEEE80211_STYPE_AUTH);
1752 memcpy(mgmt->da, da, ETH_ALEN);
1753 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1754 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1755 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1756 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
1757 mgmt->u.auth.status_code = cpu_to_le16(status);
1759 skb_put_data(skb, extra, extra_len);
1761 skb_put_data(skb, &mle, sizeof(mle));
1763 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1764 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1765 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1772 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1774 ieee80211_tx_skb(sdata, skb);
1777 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1778 const u8 *da, const u8 *bssid,
1779 u16 stype, u16 reason,
1780 bool send_frame, u8 *frame_buf)
1782 struct ieee80211_local *local = sdata->local;
1783 struct sk_buff *skb;
1784 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1787 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1788 mgmt->duration = 0; /* initialize only */
1789 mgmt->seq_ctrl = 0; /* initialize only */
1790 memcpy(mgmt->da, da, ETH_ALEN);
1791 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1792 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1793 /* u.deauth.reason_code == u.disassoc.reason_code */
1794 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1797 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1798 IEEE80211_DEAUTH_FRAME_LEN);
1802 skb_reserve(skb, local->hw.extra_tx_headroom);
1805 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1807 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1808 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1809 IEEE80211_SKB_CB(skb)->flags |=
1810 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1812 ieee80211_tx_skb(sdata, skb);
1816 static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end)
1818 if ((end - pos) < 5)
1821 *pos++ = WLAN_EID_EXTENSION;
1822 *pos++ = 1 + sizeof(cap);
1823 *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA;
1824 memcpy(pos, &cap, sizeof(cap));
1829 static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
1830 u8 *buffer, size_t buffer_len,
1831 const u8 *ie, size_t ie_len,
1832 enum nl80211_band band,
1834 struct cfg80211_chan_def *chandef,
1835 size_t *offset, u32 flags)
1837 struct ieee80211_local *local = sdata->local;
1838 struct ieee80211_supported_band *sband;
1839 const struct ieee80211_sta_he_cap *he_cap;
1840 const struct ieee80211_sta_eht_cap *eht_cap;
1841 u8 *pos = buffer, *end = buffer + buffer_len;
1843 int supp_rates_len, i;
1849 bool have_80mhz = false;
1853 sband = local->hw.wiphy->bands[band];
1854 if (WARN_ON_ONCE(!sband))
1857 rate_flags = ieee80211_chandef_rate_flags(chandef);
1858 shift = ieee80211_chandef_get_shift(chandef);
1861 for (i = 0; i < sband->n_bitrates; i++) {
1862 if ((BIT(i) & rate_mask) == 0)
1863 continue; /* skip rate */
1864 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1867 rates[num_rates++] =
1868 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1872 supp_rates_len = min_t(int, num_rates, 8);
1874 if (end - pos < 2 + supp_rates_len)
1876 *pos++ = WLAN_EID_SUPP_RATES;
1877 *pos++ = supp_rates_len;
1878 memcpy(pos, rates, supp_rates_len);
1879 pos += supp_rates_len;
1881 /* insert "request information" if in custom IEs */
1883 static const u8 before_extrates[] = {
1885 WLAN_EID_SUPP_RATES,
1888 noffset = ieee80211_ie_split(ie, ie_len,
1890 ARRAY_SIZE(before_extrates),
1892 if (end - pos < noffset - *offset)
1894 memcpy(pos, ie + *offset, noffset - *offset);
1895 pos += noffset - *offset;
1899 ext_rates_len = num_rates - supp_rates_len;
1900 if (ext_rates_len > 0) {
1901 if (end - pos < 2 + ext_rates_len)
1903 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1904 *pos++ = ext_rates_len;
1905 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1906 pos += ext_rates_len;
1909 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
1912 *pos++ = WLAN_EID_DS_PARAMS;
1914 *pos++ = ieee80211_frequency_to_channel(
1915 chandef->chan->center_freq);
1918 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1921 /* insert custom IEs that go before HT */
1923 static const u8 before_ht[] = {
1925 * no need to list the ones split off already
1926 * (or generated here)
1929 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1931 noffset = ieee80211_ie_split(ie, ie_len,
1932 before_ht, ARRAY_SIZE(before_ht),
1934 if (end - pos < noffset - *offset)
1936 memcpy(pos, ie + *offset, noffset - *offset);
1937 pos += noffset - *offset;
1941 if (sband->ht_cap.ht_supported) {
1942 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1944 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1948 /* insert custom IEs that go before VHT */
1950 static const u8 before_vht[] = {
1952 * no need to list the ones split off already
1953 * (or generated here)
1955 WLAN_EID_BSS_COEX_2040,
1956 WLAN_EID_EXT_CAPABILITY,
1958 WLAN_EID_CHANNEL_USAGE,
1959 WLAN_EID_INTERWORKING,
1961 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
1963 noffset = ieee80211_ie_split(ie, ie_len,
1964 before_vht, ARRAY_SIZE(before_vht),
1966 if (end - pos < noffset - *offset)
1968 memcpy(pos, ie + *offset, noffset - *offset);
1969 pos += noffset - *offset;
1973 /* Check if any channel in this sband supports at least 80 MHz */
1974 for (i = 0; i < sband->n_channels; i++) {
1975 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1976 IEEE80211_CHAN_NO_80MHZ))
1983 if (sband->vht_cap.vht_supported && have_80mhz) {
1984 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1986 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1987 sband->vht_cap.cap);
1990 /* insert custom IEs that go before HE */
1992 static const u8 before_he[] = {
1994 * no need to list the ones split off before VHT
1997 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1999 /* TODO: add 11ah/11aj/11ak elements */
2001 noffset = ieee80211_ie_split(ie, ie_len,
2002 before_he, ARRAY_SIZE(before_he),
2004 if (end - pos < noffset - *offset)
2006 memcpy(pos, ie + *offset, noffset - *offset);
2007 pos += noffset - *offset;
2011 he_cap = ieee80211_get_he_iftype_cap(sband,
2012 ieee80211_vif_type_p2p(&sdata->vif));
2014 cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
2015 IEEE80211_CHAN_NO_HE)) {
2016 pos = ieee80211_ie_build_he_cap(0, pos, he_cap, end);
2021 eht_cap = ieee80211_get_eht_iftype_cap(sband,
2022 ieee80211_vif_type_p2p(&sdata->vif));
2025 cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
2026 IEEE80211_CHAN_NO_HE |
2027 IEEE80211_CHAN_NO_EHT)) {
2028 pos = ieee80211_ie_build_eht_cap(pos, he_cap, eht_cap, end);
2033 if (cfg80211_any_usable_channels(local->hw.wiphy,
2034 BIT(NL80211_BAND_6GHZ),
2035 IEEE80211_CHAN_NO_HE)) {
2036 struct ieee80211_supported_band *sband6;
2038 sband6 = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
2039 he_cap = ieee80211_get_he_iftype_cap(sband6,
2040 ieee80211_vif_type_p2p(&sdata->vif));
2043 enum nl80211_iftype iftype =
2044 ieee80211_vif_type_p2p(&sdata->vif);
2045 __le16 cap = ieee80211_get_he_6ghz_capa(sband, iftype);
2047 pos = ieee80211_write_he_6ghz_cap(pos, cap, end);
2052 * If adding more here, adjust code in main.c
2053 * that calculates local->scan_ies_len.
2056 return pos - buffer;
2058 WARN_ONCE(1, "not enough space for preq IEs\n");
2060 return pos - buffer;
2063 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2065 struct ieee80211_scan_ies *ie_desc,
2066 const u8 *ie, size_t ie_len,
2067 u8 bands_used, u32 *rate_masks,
2068 struct cfg80211_chan_def *chandef,
2071 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
2074 memset(ie_desc, 0, sizeof(*ie_desc));
2076 for (i = 0; i < NUM_NL80211_BANDS; i++) {
2077 if (bands_used & BIT(i)) {
2078 pos += ieee80211_build_preq_ies_band(sdata,
2086 ie_desc->ies[i] = buffer + old_pos;
2087 ie_desc->len[i] = pos - old_pos;
2092 /* add any remaining custom IEs */
2094 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
2095 "not enough space for preq custom IEs\n"))
2097 memcpy(buffer + pos, ie + custom_ie_offset,
2098 ie_len - custom_ie_offset);
2099 ie_desc->common_ies = buffer + pos;
2100 ie_desc->common_ie_len = ie_len - custom_ie_offset;
2101 pos += ie_len - custom_ie_offset;
2107 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2108 const u8 *src, const u8 *dst,
2110 struct ieee80211_channel *chan,
2111 const u8 *ssid, size_t ssid_len,
2112 const u8 *ie, size_t ie_len,
2115 struct ieee80211_local *local = sdata->local;
2116 struct cfg80211_chan_def chandef;
2117 struct sk_buff *skb;
2118 struct ieee80211_mgmt *mgmt;
2120 u32 rate_masks[NUM_NL80211_BANDS] = {};
2121 struct ieee80211_scan_ies dummy_ie_desc;
2124 * Do not send DS Channel parameter for directed probe requests
2125 * in order to maximize the chance that we get a response. Some
2126 * badly-behaved APs don't respond when this parameter is included.
2128 chandef.width = sdata->vif.bss_conf.chandef.width;
2129 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
2130 chandef.chan = NULL;
2132 chandef.chan = chan;
2134 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
2135 local->scan_ies_len + ie_len);
2139 rate_masks[chan->band] = ratemask;
2140 ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb),
2141 skb_tailroom(skb), &dummy_ie_desc,
2142 ie, ie_len, BIT(chan->band),
2143 rate_masks, &chandef, flags);
2144 skb_put(skb, ies_len);
2147 mgmt = (struct ieee80211_mgmt *) skb->data;
2148 memcpy(mgmt->da, dst, ETH_ALEN);
2149 memcpy(mgmt->bssid, dst, ETH_ALEN);
2152 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
2157 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2158 struct ieee802_11_elems *elems,
2159 enum nl80211_band band, u32 *basic_rates)
2161 struct ieee80211_supported_band *sband;
2163 u32 supp_rates, rate_flags;
2166 sband = sdata->local->hw.wiphy->bands[band];
2167 if (WARN_ON(!sband))
2170 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2171 shift = ieee80211_vif_get_shift(&sdata->vif);
2173 num_rates = sband->n_bitrates;
2175 for (i = 0; i < elems->supp_rates_len +
2176 elems->ext_supp_rates_len; i++) {
2180 if (i < elems->supp_rates_len)
2181 rate = elems->supp_rates[i];
2182 else if (elems->ext_supp_rates)
2183 rate = elems->ext_supp_rates
2184 [i - elems->supp_rates_len];
2185 own_rate = 5 * (rate & 0x7f);
2186 is_basic = !!(rate & 0x80);
2188 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2191 for (j = 0; j < num_rates; j++) {
2193 if ((rate_flags & sband->bitrates[j].flags)
2197 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
2200 if (brate == own_rate) {
2201 supp_rates |= BIT(j);
2202 if (basic_rates && is_basic)
2203 *basic_rates |= BIT(j);
2210 void ieee80211_stop_device(struct ieee80211_local *local)
2212 ieee80211_led_radio(local, false);
2213 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
2215 cancel_work_sync(&local->reconfig_filter);
2217 flush_workqueue(local->workqueue);
2221 static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
2224 /* It's possible that we don't handle the scan completion in
2225 * time during suspend, so if it's still marked as completed
2226 * here, queue the work and flush it to clean things up.
2227 * Instead of calling the worker function directly here, we
2228 * really queue it to avoid potential races with other flows
2229 * scheduling the same work.
2231 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2232 /* If coming from reconfiguration failure, abort the scan so
2233 * we don't attempt to continue a partial HW scan - which is
2234 * possible otherwise if (e.g.) the 2.4 GHz portion was the
2235 * completed scan, and a 5 GHz portion is still pending.
2238 set_bit(SCAN_ABORTED, &local->scanning);
2239 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2240 flush_delayed_work(&local->scan_work);
2244 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2246 struct ieee80211_sub_if_data *sdata;
2247 struct ieee80211_chanctx *ctx;
2250 * We get here if during resume the device can't be restarted properly.
2251 * We might also get here if this happens during HW reset, which is a
2252 * slightly different situation and we need to drop all connections in
2255 * Ask cfg80211 to turn off all interfaces, this will result in more
2256 * warnings but at least we'll then get into a clean stopped state.
2259 local->resuming = false;
2260 local->suspended = false;
2261 local->in_reconfig = false;
2263 ieee80211_flush_completed_scan(local, true);
2265 /* scheduled scan clearly can't be running any more, but tell
2266 * cfg80211 and clear local state
2268 ieee80211_sched_scan_end(local);
2270 list_for_each_entry(sdata, &local->interfaces, list)
2271 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2273 /* Mark channel contexts as not being in the driver any more to avoid
2274 * removing them from the driver during the shutdown process...
2276 mutex_lock(&local->chanctx_mtx);
2277 list_for_each_entry(ctx, &local->chanctx_list, list)
2278 ctx->driver_present = false;
2279 mutex_unlock(&local->chanctx_mtx);
2282 static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2283 struct ieee80211_sub_if_data *sdata,
2284 struct ieee80211_link_data *link)
2286 struct ieee80211_chanctx_conf *conf;
2287 struct ieee80211_chanctx *ctx;
2289 if (!local->use_chanctx)
2292 mutex_lock(&local->chanctx_mtx);
2293 conf = rcu_dereference_protected(link->conf->chanctx_conf,
2294 lockdep_is_held(&local->chanctx_mtx));
2296 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2297 drv_assign_vif_chanctx(local, sdata, link->conf, ctx);
2299 mutex_unlock(&local->chanctx_mtx);
2302 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2304 struct ieee80211_local *local = sdata->local;
2305 struct sta_info *sta;
2308 mutex_lock(&local->sta_mtx);
2309 list_for_each_entry(sta, &local->sta_list, list) {
2310 enum ieee80211_sta_state state;
2312 if (!sta->uploaded || sta->sdata != sdata)
2315 for (state = IEEE80211_STA_NOTEXIST;
2316 state < sta->sta_state; state++)
2317 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2320 mutex_unlock(&local->sta_mtx);
2323 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2325 struct cfg80211_nan_func *func, **funcs;
2328 res = drv_start_nan(sdata->local, sdata,
2329 &sdata->u.nan.conf);
2333 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2339 /* Add all the functions:
2340 * This is a little bit ugly. We need to call a potentially sleeping
2341 * callback for each NAN function, so we can't hold the spinlock.
2343 spin_lock_bh(&sdata->u.nan.func_lock);
2345 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2348 spin_unlock_bh(&sdata->u.nan.func_lock);
2350 for (i = 0; funcs[i]; i++) {
2351 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2353 ieee80211_nan_func_terminated(&sdata->vif,
2354 funcs[i]->instance_id,
2355 NL80211_NAN_FUNC_TERM_REASON_ERROR,
2364 int ieee80211_reconfig(struct ieee80211_local *local)
2366 struct ieee80211_hw *hw = &local->hw;
2367 struct ieee80211_sub_if_data *sdata;
2368 struct ieee80211_chanctx *ctx;
2369 struct sta_info *sta;
2371 bool reconfig_due_to_wowlan = false;
2372 struct ieee80211_sub_if_data *sched_scan_sdata;
2373 struct cfg80211_sched_scan_request *sched_scan_req;
2374 bool sched_scan_stopped = false;
2375 bool suspended = local->suspended;
2376 bool in_reconfig = false;
2378 /* nothing to do if HW shouldn't run */
2379 if (!local->open_count)
2384 local->resuming = true;
2386 if (local->wowlan) {
2388 * In the wowlan case, both mac80211 and the device
2389 * are functional when the resume op is called, so
2390 * clear local->suspended so the device could operate
2391 * normally (e.g. pass rx frames).
2393 local->suspended = false;
2394 res = drv_resume(local);
2395 local->wowlan = false;
2397 local->resuming = false;
2404 * res is 1, which means the driver requested
2405 * to go through a regular reset on wakeup.
2406 * restore local->suspended in this case.
2408 reconfig_due_to_wowlan = true;
2409 local->suspended = true;
2414 * In case of hw_restart during suspend (without wowlan),
2415 * cancel restart work, as we are reconfiguring the device
2417 * Note that restart_work is scheduled on a frozen workqueue,
2418 * so we can't deadlock in this case.
2420 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2421 cancel_work_sync(&local->restart_work);
2423 local->started = false;
2426 * Upon resume hardware can sometimes be goofy due to
2427 * various platform / driver / bus issues, so restarting
2428 * the device may at times not work immediately. Propagate
2431 res = drv_start(local);
2434 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2436 WARN(1, "Hardware became unavailable during restart.\n");
2437 ieee80211_handle_reconfig_failure(local);
2441 /* setup fragmentation threshold */
2442 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2444 /* setup RTS threshold */
2445 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2447 /* reset coverage class */
2448 drv_set_coverage_class(local, hw->wiphy->coverage_class);
2450 ieee80211_led_radio(local, true);
2451 ieee80211_mod_tpt_led_trig(local,
2452 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2454 /* add interfaces */
2455 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata);
2457 /* in HW restart it exists already */
2458 WARN_ON(local->resuming);
2459 res = drv_add_interface(local, sdata);
2461 RCU_INIT_POINTER(local->monitor_sdata, NULL);
2467 list_for_each_entry(sdata, &local->interfaces, list) {
2468 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2469 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2470 ieee80211_sdata_running(sdata)) {
2471 res = drv_add_interface(local, sdata);
2477 /* If adding any of the interfaces failed above, roll back and
2481 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2483 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2484 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2485 ieee80211_sdata_running(sdata))
2486 drv_remove_interface(local, sdata);
2487 ieee80211_handle_reconfig_failure(local);
2491 /* add channel contexts */
2492 if (local->use_chanctx) {
2493 mutex_lock(&local->chanctx_mtx);
2494 list_for_each_entry(ctx, &local->chanctx_list, list)
2495 if (ctx->replace_state !=
2496 IEEE80211_CHANCTX_REPLACES_OTHER)
2497 WARN_ON(drv_add_chanctx(local, ctx));
2498 mutex_unlock(&local->chanctx_mtx);
2500 sdata = wiphy_dereference(local->hw.wiphy,
2501 local->monitor_sdata);
2502 if (sdata && ieee80211_sdata_running(sdata))
2503 ieee80211_assign_chanctx(local, sdata, &sdata->deflink);
2506 /* reconfigure hardware */
2507 ieee80211_hw_config(local, ~0);
2509 ieee80211_configure_filter(local);
2511 /* Finally also reconfigure all the BSS information */
2512 list_for_each_entry(sdata, &local->interfaces, list) {
2513 unsigned int link_id;
2516 if (!ieee80211_sdata_running(sdata))
2521 link_id < ARRAY_SIZE(sdata->vif.link_conf);
2523 struct ieee80211_link_data *link;
2525 link = sdata_dereference(sdata->link[link_id], sdata);
2527 ieee80211_assign_chanctx(local, sdata, link);
2529 sdata_unlock(sdata);
2531 switch (sdata->vif.type) {
2532 case NL80211_IFTYPE_AP_VLAN:
2533 case NL80211_IFTYPE_MONITOR:
2535 case NL80211_IFTYPE_ADHOC:
2536 if (sdata->vif.cfg.ibss_joined)
2537 WARN_ON(drv_join_ibss(local, sdata));
2540 ieee80211_reconfig_stations(sdata);
2542 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2543 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2544 drv_conf_tx(local, &sdata->deflink, i,
2545 &sdata->deflink.tx_conf[i]);
2549 /* common change flags for all interface types */
2550 changed = BSS_CHANGED_ERP_CTS_PROT |
2551 BSS_CHANGED_ERP_PREAMBLE |
2552 BSS_CHANGED_ERP_SLOT |
2554 BSS_CHANGED_BASIC_RATES |
2555 BSS_CHANGED_BEACON_INT |
2560 BSS_CHANGED_TXPOWER |
2561 BSS_CHANGED_MCAST_RATE;
2563 if (sdata->vif.bss_conf.mu_mimo_owner)
2564 changed |= BSS_CHANGED_MU_GROUPS;
2566 switch (sdata->vif.type) {
2567 case NL80211_IFTYPE_STATION:
2568 changed |= BSS_CHANGED_ASSOC |
2569 BSS_CHANGED_ARP_FILTER |
2572 /* Re-send beacon info report to the driver */
2573 if (sdata->deflink.u.mgd.have_beacon)
2574 changed |= BSS_CHANGED_BEACON_INFO;
2576 if (sdata->vif.bss_conf.max_idle_period ||
2577 sdata->vif.bss_conf.protected_keep_alive)
2578 changed |= BSS_CHANGED_KEEP_ALIVE;
2581 ieee80211_bss_info_change_notify(sdata, changed);
2582 sdata_unlock(sdata);
2584 case NL80211_IFTYPE_OCB:
2585 changed |= BSS_CHANGED_OCB;
2586 ieee80211_bss_info_change_notify(sdata, changed);
2588 case NL80211_IFTYPE_ADHOC:
2589 changed |= BSS_CHANGED_IBSS;
2591 case NL80211_IFTYPE_AP:
2592 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
2594 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2595 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2596 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2597 changed |= BSS_CHANGED_FTM_RESPONDER;
2599 if (sdata->vif.type == NL80211_IFTYPE_AP) {
2600 changed |= BSS_CHANGED_AP_PROBE_RESP;
2602 if (rcu_access_pointer(sdata->deflink.u.ap.beacon))
2603 drv_start_ap(local, sdata,
2604 sdata->deflink.conf);
2607 case NL80211_IFTYPE_MESH_POINT:
2608 if (sdata->vif.bss_conf.enable_beacon) {
2609 changed |= BSS_CHANGED_BEACON |
2610 BSS_CHANGED_BEACON_ENABLED;
2611 ieee80211_bss_info_change_notify(sdata, changed);
2614 case NL80211_IFTYPE_NAN:
2615 res = ieee80211_reconfig_nan(sdata);
2617 ieee80211_handle_reconfig_failure(local);
2621 case NL80211_IFTYPE_AP_VLAN:
2622 case NL80211_IFTYPE_MONITOR:
2623 case NL80211_IFTYPE_P2P_DEVICE:
2626 case NL80211_IFTYPE_UNSPECIFIED:
2627 case NUM_NL80211_IFTYPES:
2628 case NL80211_IFTYPE_P2P_CLIENT:
2629 case NL80211_IFTYPE_P2P_GO:
2630 case NL80211_IFTYPE_WDS:
2636 ieee80211_recalc_ps(local);
2639 * The sta might be in psm against the ap (e.g. because
2640 * this was the state before a hw restart), so we
2641 * explicitly send a null packet in order to make sure
2642 * it'll sync against the ap (and get out of psm).
2644 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2645 list_for_each_entry(sdata, &local->interfaces, list) {
2646 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2648 if (!sdata->u.mgd.associated)
2651 ieee80211_send_nullfunc(local, sdata, false);
2655 /* APs are now beaconing, add back stations */
2656 mutex_lock(&local->sta_mtx);
2657 list_for_each_entry(sta, &local->sta_list, list) {
2658 enum ieee80211_sta_state state;
2663 if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
2664 sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
2667 for (state = IEEE80211_STA_NOTEXIST;
2668 state < sta->sta_state; state++)
2669 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2672 mutex_unlock(&local->sta_mtx);
2675 list_for_each_entry(sdata, &local->interfaces, list)
2676 ieee80211_reenable_keys(sdata);
2678 /* Reconfigure sched scan if it was interrupted by FW restart */
2679 mutex_lock(&local->mtx);
2680 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2681 lockdep_is_held(&local->mtx));
2682 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2683 lockdep_is_held(&local->mtx));
2684 if (sched_scan_sdata && sched_scan_req)
2686 * Sched scan stopped, but we don't want to report it. Instead,
2687 * we're trying to reschedule. However, if more than one scan
2688 * plan was set, we cannot reschedule since we don't know which
2689 * scan plan was currently running (and some scan plans may have
2690 * already finished).
2692 if (sched_scan_req->n_scan_plans > 1 ||
2693 __ieee80211_request_sched_scan_start(sched_scan_sdata,
2695 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2696 RCU_INIT_POINTER(local->sched_scan_req, NULL);
2697 sched_scan_stopped = true;
2699 mutex_unlock(&local->mtx);
2701 if (sched_scan_stopped)
2702 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
2706 if (local->monitors == local->open_count && local->monitors > 0)
2707 ieee80211_add_virtual_monitor(local);
2710 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2711 * sessions can be established after a resume.
2713 * Also tear down aggregation sessions since reconfiguring
2714 * them in a hardware restart scenario is not easily done
2715 * right now, and the hardware will have lost information
2716 * about the sessions, but we and the AP still think they
2717 * are active. This is really a workaround though.
2719 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2720 mutex_lock(&local->sta_mtx);
2722 list_for_each_entry(sta, &local->sta_list, list) {
2723 if (!local->resuming)
2724 ieee80211_sta_tear_down_BA_sessions(
2725 sta, AGG_STOP_LOCAL_REQUEST);
2726 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
2729 mutex_unlock(&local->sta_mtx);
2733 * If this is for hw restart things are still running.
2734 * We may want to change that later, however.
2736 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2737 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2739 if (local->in_reconfig) {
2740 in_reconfig = local->in_reconfig;
2741 local->in_reconfig = false;
2744 /* Restart deferred ROCs */
2745 mutex_lock(&local->mtx);
2746 ieee80211_start_next_roc(local);
2747 mutex_unlock(&local->mtx);
2749 /* Requeue all works */
2750 list_for_each_entry(sdata, &local->interfaces, list)
2751 ieee80211_queue_work(&local->hw, &sdata->work);
2754 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
2755 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2759 list_for_each_entry(sdata, &local->interfaces, list) {
2760 if (!ieee80211_sdata_running(sdata))
2762 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2763 ieee80211_sta_restart(sdata);
2771 /* first set suspended false, then resuming */
2772 local->suspended = false;
2774 local->resuming = false;
2776 ieee80211_flush_completed_scan(local, false);
2778 if (local->open_count && !reconfig_due_to_wowlan)
2779 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2781 list_for_each_entry(sdata, &local->interfaces, list) {
2782 if (!ieee80211_sdata_running(sdata))
2784 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2785 ieee80211_sta_restart(sdata);
2788 mod_timer(&local->sta_cleanup, jiffies + 1);
2796 static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag)
2798 struct ieee80211_sub_if_data *sdata;
2799 struct ieee80211_local *local;
2800 struct ieee80211_key *key;
2805 sdata = vif_to_sdata(vif);
2806 local = sdata->local;
2808 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME &&
2812 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART &&
2813 !local->in_reconfig))
2816 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2819 sdata->flags |= flag;
2821 mutex_lock(&local->key_mtx);
2822 list_for_each_entry(key, &sdata->key_list, list)
2823 key->flags |= KEY_FLAG_TAINTED;
2824 mutex_unlock(&local->key_mtx);
2827 void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif)
2829 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART);
2831 EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect);
2833 void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2835 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME);
2837 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2839 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
2840 struct ieee80211_link_data *link)
2842 struct ieee80211_local *local = sdata->local;
2843 struct ieee80211_chanctx_conf *chanctx_conf;
2844 struct ieee80211_chanctx *chanctx;
2846 mutex_lock(&local->chanctx_mtx);
2848 chanctx_conf = rcu_dereference_protected(link->conf->chanctx_conf,
2849 lockdep_is_held(&local->chanctx_mtx));
2852 * This function can be called from a work, thus it may be possible
2853 * that the chanctx_conf is removed (due to a disconnection, for
2855 * So nothing should be done in such case.
2860 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2861 ieee80211_recalc_smps_chanctx(local, chanctx);
2863 mutex_unlock(&local->chanctx_mtx);
2866 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
2869 struct ieee80211_local *local = sdata->local;
2870 struct ieee80211_chanctx_conf *chanctx_conf;
2871 struct ieee80211_chanctx *chanctx;
2874 mutex_lock(&local->chanctx_mtx);
2876 for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) {
2877 struct ieee80211_bss_conf *bss_conf;
2879 if (link_id >= 0 && link_id != i)
2883 bss_conf = rcu_dereference(sdata->vif.link_conf[i]);
2889 chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf,
2890 lockdep_is_held(&local->chanctx_mtx));
2892 * Since we hold the chanctx_mtx (checked above)
2893 * we can take the chanctx_conf pointer out of the
2894 * RCU critical section, it cannot go away without
2895 * the mutex. Just the way we reached it could - in
2896 * theory - go away, but we don't really care and
2897 * it really shouldn't happen anyway.
2901 if (WARN_ON_ONCE(!chanctx_conf))
2904 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx,
2906 ieee80211_recalc_chanctx_min_def(local, chanctx);
2909 mutex_unlock(&local->chanctx_mtx);
2912 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2914 size_t pos = offset;
2916 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2917 pos += 2 + ies[pos + 1];
2922 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2927 *pos++ = WLAN_EID_HT_CAPABILITY;
2928 *pos++ = sizeof(struct ieee80211_ht_cap);
2929 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2931 /* capability flags */
2932 tmp = cpu_to_le16(cap);
2933 memcpy(pos, &tmp, sizeof(u16));
2936 /* AMPDU parameters */
2937 *pos++ = ht_cap->ampdu_factor |
2938 (ht_cap->ampdu_density <<
2939 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2942 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2943 pos += sizeof(ht_cap->mcs);
2945 /* extended capabilities */
2946 pos += sizeof(__le16);
2948 /* BF capabilities */
2949 pos += sizeof(__le32);
2951 /* antenna selection */
2957 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2962 *pos++ = WLAN_EID_VHT_CAPABILITY;
2963 *pos++ = sizeof(struct ieee80211_vht_cap);
2964 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
2966 /* capability flags */
2967 tmp = cpu_to_le32(cap);
2968 memcpy(pos, &tmp, sizeof(u32));
2972 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2973 pos += sizeof(vht_cap->vht_mcs);
2978 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
2980 const struct ieee80211_sta_he_cap *he_cap;
2981 struct ieee80211_supported_band *sband;
2984 sband = ieee80211_get_sband(sdata);
2988 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
2992 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2994 sizeof(he_cap->he_cap_elem) + n +
2995 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2996 he_cap->he_cap_elem.phy_cap_info);
2999 u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos,
3000 const struct ieee80211_sta_he_cap *he_cap,
3003 struct ieee80211_he_cap_elem elem;
3008 /* Make sure we have place for the IE */
3010 * TODO: the 1 added is because this temporarily is under the EXTENSION
3011 * IE. Get rid of it when it moves.
3016 /* modify on stack first to calculate 'n' and 'ie_len' correctly */
3017 elem = he_cap->he_cap_elem;
3019 if (disable_flags & IEEE80211_CONN_DISABLE_40MHZ)
3020 elem.phy_cap_info[0] &=
3021 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
3022 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G);
3024 if (disable_flags & IEEE80211_CONN_DISABLE_160MHZ)
3025 elem.phy_cap_info[0] &=
3026 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3028 if (disable_flags & IEEE80211_CONN_DISABLE_80P80MHZ)
3029 elem.phy_cap_info[0] &=
3030 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3032 n = ieee80211_he_mcs_nss_size(&elem);
3034 sizeof(he_cap->he_cap_elem) + n +
3035 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
3036 he_cap->he_cap_elem.phy_cap_info);
3038 if ((end - pos) < ie_len)
3041 *pos++ = WLAN_EID_EXTENSION;
3042 pos++; /* We'll set the size later below */
3043 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
3046 memcpy(pos, &elem, sizeof(elem));
3047 pos += sizeof(elem);
3049 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
3052 /* Check if PPE Threshold should be present */
3053 if ((he_cap->he_cap_elem.phy_cap_info[6] &
3054 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
3058 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
3059 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
3061 n = hweight8(he_cap->ppe_thres[0] &
3062 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
3063 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
3064 IEEE80211_PPE_THRES_NSS_POS));
3067 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
3070 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
3071 n = DIV_ROUND_UP(n, 8);
3073 /* Copy PPE Thresholds */
3074 memcpy(pos, &he_cap->ppe_thres, n);
3078 orig_pos[1] = (pos - orig_pos) - 2;
3082 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
3083 struct sk_buff *skb)
3085 struct ieee80211_supported_band *sband;
3086 const struct ieee80211_sband_iftype_data *iftd;
3087 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3091 if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy,
3092 BIT(NL80211_BAND_6GHZ),
3093 IEEE80211_CHAN_NO_HE))
3096 sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3098 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
3102 /* Check for device HE 6 GHz capability before adding element */
3103 if (!iftd->he_6ghz_capa.capa)
3106 cap = le16_to_cpu(iftd->he_6ghz_capa.capa);
3107 cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS;
3109 switch (sdata->deflink.smps_mode) {
3110 case IEEE80211_SMPS_AUTOMATIC:
3111 case IEEE80211_SMPS_NUM_MODES:
3114 case IEEE80211_SMPS_OFF:
3115 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
3116 IEEE80211_HE_6GHZ_CAP_SM_PS);
3118 case IEEE80211_SMPS_STATIC:
3119 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
3120 IEEE80211_HE_6GHZ_CAP_SM_PS);
3122 case IEEE80211_SMPS_DYNAMIC:
3123 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
3124 IEEE80211_HE_6GHZ_CAP_SM_PS);
3128 pos = skb_put(skb, 2 + 1 + sizeof(cap));
3129 ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap),
3130 pos + 2 + 1 + sizeof(cap));
3133 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
3134 const struct cfg80211_chan_def *chandef,
3135 u16 prot_mode, bool rifs_mode)
3137 struct ieee80211_ht_operation *ht_oper;
3138 /* Build HT Information */
3139 *pos++ = WLAN_EID_HT_OPERATION;
3140 *pos++ = sizeof(struct ieee80211_ht_operation);
3141 ht_oper = (struct ieee80211_ht_operation *)pos;
3142 ht_oper->primary_chan = ieee80211_frequency_to_channel(
3143 chandef->chan->center_freq);
3144 switch (chandef->width) {
3145 case NL80211_CHAN_WIDTH_160:
3146 case NL80211_CHAN_WIDTH_80P80:
3147 case NL80211_CHAN_WIDTH_80:
3148 case NL80211_CHAN_WIDTH_40:
3149 if (chandef->center_freq1 > chandef->chan->center_freq)
3150 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3152 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3154 case NL80211_CHAN_WIDTH_320:
3155 /* HT information element should not be included on 6GHz */
3159 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
3162 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
3163 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
3164 chandef->width != NL80211_CHAN_WIDTH_20)
3165 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
3168 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
3170 ht_oper->operation_mode = cpu_to_le16(prot_mode);
3171 ht_oper->stbc_param = 0x0000;
3173 /* It seems that Basic MCS set and Supported MCS set
3174 are identical for the first 10 bytes */
3175 memset(&ht_oper->basic_set, 0, 16);
3176 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
3178 return pos + sizeof(struct ieee80211_ht_operation);
3181 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
3182 const struct cfg80211_chan_def *chandef)
3184 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
3185 *pos++ = 3; /* IE length */
3186 /* New channel width */
3187 switch (chandef->width) {
3188 case NL80211_CHAN_WIDTH_80:
3189 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
3191 case NL80211_CHAN_WIDTH_160:
3192 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
3194 case NL80211_CHAN_WIDTH_80P80:
3195 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
3197 case NL80211_CHAN_WIDTH_320:
3198 /* The behavior is not defined for 320 MHz channels */
3202 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
3205 /* new center frequency segment 0 */
3206 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
3207 /* new center frequency segment 1 */
3208 if (chandef->center_freq2)
3209 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
3214 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
3215 const struct cfg80211_chan_def *chandef)
3217 struct ieee80211_vht_operation *vht_oper;
3219 *pos++ = WLAN_EID_VHT_OPERATION;
3220 *pos++ = sizeof(struct ieee80211_vht_operation);
3221 vht_oper = (struct ieee80211_vht_operation *)pos;
3222 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
3223 chandef->center_freq1);
3224 if (chandef->center_freq2)
3225 vht_oper->center_freq_seg1_idx =
3226 ieee80211_frequency_to_channel(chandef->center_freq2);
3228 vht_oper->center_freq_seg1_idx = 0x00;
3230 switch (chandef->width) {
3231 case NL80211_CHAN_WIDTH_160:
3233 * Convert 160 MHz channel width to new style as interop
3236 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3237 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
3238 if (chandef->chan->center_freq < chandef->center_freq1)
3239 vht_oper->center_freq_seg0_idx -= 8;
3241 vht_oper->center_freq_seg0_idx += 8;
3243 case NL80211_CHAN_WIDTH_80P80:
3245 * Convert 80+80 MHz channel width to new style as interop
3248 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3250 case NL80211_CHAN_WIDTH_80:
3251 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3253 case NL80211_CHAN_WIDTH_320:
3254 /* VHT information element should not be included on 6GHz */
3258 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
3262 /* don't require special VHT peer rates */
3263 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
3265 return pos + sizeof(struct ieee80211_vht_operation);
3268 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
3270 struct ieee80211_he_operation *he_oper;
3271 struct ieee80211_he_6ghz_oper *he_6ghz_op;
3273 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
3275 if (chandef->chan->band == NL80211_BAND_6GHZ)
3276 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
3278 *pos++ = WLAN_EID_EXTENSION;
3280 *pos++ = WLAN_EID_EXT_HE_OPERATION;
3283 he_oper_params |= u32_encode_bits(1023, /* disabled */
3284 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3285 he_oper_params |= u32_encode_bits(1,
3286 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
3287 he_oper_params |= u32_encode_bits(1,
3288 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3289 if (chandef->chan->band == NL80211_BAND_6GHZ)
3290 he_oper_params |= u32_encode_bits(1,
3291 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
3293 he_oper = (struct ieee80211_he_operation *)pos;
3294 he_oper->he_oper_params = cpu_to_le32(he_oper_params);
3296 /* don't require special HE peer rates */
3297 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
3298 pos += sizeof(struct ieee80211_he_operation);
3300 if (chandef->chan->band != NL80211_BAND_6GHZ)
3303 /* TODO add VHT operational */
3304 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
3305 he_6ghz_op->minrate = 6; /* 6 Mbps */
3306 he_6ghz_op->primary =
3307 ieee80211_frequency_to_channel(chandef->chan->center_freq);
3309 ieee80211_frequency_to_channel(chandef->center_freq1);
3310 if (chandef->center_freq2)
3312 ieee80211_frequency_to_channel(chandef->center_freq2);
3314 he_6ghz_op->ccfs1 = 0;
3316 switch (chandef->width) {
3317 case NL80211_CHAN_WIDTH_320:
3319 * TODO: mesh operation is not defined over 6GHz 320 MHz
3324 case NL80211_CHAN_WIDTH_160:
3325 /* Convert 160 MHz channel width to new style as interop
3328 he_6ghz_op->control =
3329 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3330 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
3331 if (chandef->chan->center_freq < chandef->center_freq1)
3332 he_6ghz_op->ccfs0 -= 8;
3334 he_6ghz_op->ccfs0 += 8;
3336 case NL80211_CHAN_WIDTH_80P80:
3337 he_6ghz_op->control =
3338 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3340 case NL80211_CHAN_WIDTH_80:
3341 he_6ghz_op->control =
3342 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
3344 case NL80211_CHAN_WIDTH_40:
3345 he_6ghz_op->control =
3346 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
3349 he_6ghz_op->control =
3350 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
3354 pos += sizeof(struct ieee80211_he_6ghz_oper);
3360 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
3361 struct cfg80211_chan_def *chandef)
3363 enum nl80211_channel_type channel_type;
3368 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
3369 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3370 channel_type = NL80211_CHAN_HT20;
3372 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3373 channel_type = NL80211_CHAN_HT40PLUS;
3375 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3376 channel_type = NL80211_CHAN_HT40MINUS;
3382 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
3386 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
3387 const struct ieee80211_vht_operation *oper,
3388 const struct ieee80211_ht_operation *htop,
3389 struct cfg80211_chan_def *chandef)
3391 struct cfg80211_chan_def new = *chandef;
3393 int ccfs0, ccfs1, ccfs2;
3396 bool support_80_80 = false;
3397 bool support_160 = false;
3398 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
3399 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
3400 u8 supp_chwidth = u32_get_bits(vht_cap_info,
3401 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
3406 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
3407 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
3408 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
3409 support_80_80 = ((vht_cap &
3410 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
3411 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
3412 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
3413 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
3414 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
3415 ccfs0 = oper->center_freq_seg0_idx;
3416 ccfs1 = oper->center_freq_seg1_idx;
3417 ccfs2 = (le16_to_cpu(htop->operation_mode) &
3418 IEEE80211_HT_OP_MODE_CCFS2_MASK)
3419 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
3423 /* if not supported, parse as though we didn't understand it */
3424 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3425 ext_nss_bw_supp = 0;
3428 * Cf. IEEE 802.11 Table 9-250
3430 * We really just consider that because it's inefficient to connect
3431 * at a higher bandwidth than we'll actually be able to use.
3433 switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
3437 support_160 = false;
3438 support_80_80 = false;
3441 support_80_80 = false;
3464 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3465 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
3467 switch (oper->chan_width) {
3468 case IEEE80211_VHT_CHANWIDTH_USE_HT:
3469 /* just use HT information directly */
3471 case IEEE80211_VHT_CHANWIDTH_80MHZ:
3472 new.width = NL80211_CHAN_WIDTH_80;
3473 new.center_freq1 = cf0;
3474 /* If needed, adjust based on the newer interop workaround. */
3478 diff = abs(ccf1 - ccf0);
3479 if ((diff == 8) && support_160) {
3480 new.width = NL80211_CHAN_WIDTH_160;
3481 new.center_freq1 = cf1;
3482 } else if ((diff > 8) && support_80_80) {
3483 new.width = NL80211_CHAN_WIDTH_80P80;
3484 new.center_freq2 = cf1;
3488 case IEEE80211_VHT_CHANWIDTH_160MHZ:
3489 /* deprecated encoding */
3490 new.width = NL80211_CHAN_WIDTH_160;
3491 new.center_freq1 = cf0;
3493 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3494 /* deprecated encoding */
3495 new.width = NL80211_CHAN_WIDTH_80P80;
3496 new.center_freq1 = cf0;
3497 new.center_freq2 = cf1;
3503 if (!cfg80211_chandef_valid(&new))
3510 void ieee80211_chandef_eht_oper(struct ieee80211_sub_if_data *sdata,
3511 const struct ieee80211_eht_operation *eht_oper,
3512 bool support_160, bool support_320,
3513 struct cfg80211_chan_def *chandef)
3515 struct ieee80211_eht_operation_info *info = (void *)eht_oper->optional;
3517 chandef->center_freq1 =
3518 ieee80211_channel_to_frequency(info->ccfs0,
3519 chandef->chan->band);
3521 switch (u8_get_bits(info->control,
3522 IEEE80211_EHT_OPER_CHAN_WIDTH)) {
3523 case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ:
3524 chandef->width = NL80211_CHAN_WIDTH_20;
3526 case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ:
3527 chandef->width = NL80211_CHAN_WIDTH_40;
3529 case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ:
3530 chandef->width = NL80211_CHAN_WIDTH_80;
3532 case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ:
3534 chandef->width = NL80211_CHAN_WIDTH_160;
3535 chandef->center_freq1 =
3536 ieee80211_channel_to_frequency(info->ccfs1,
3537 chandef->chan->band);
3539 chandef->width = NL80211_CHAN_WIDTH_80;
3542 case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ:
3544 chandef->width = NL80211_CHAN_WIDTH_320;
3545 chandef->center_freq1 =
3546 ieee80211_channel_to_frequency(info->ccfs1,
3547 chandef->chan->band);
3548 } else if (support_160) {
3549 chandef->width = NL80211_CHAN_WIDTH_160;
3551 chandef->width = NL80211_CHAN_WIDTH_80;
3553 if (chandef->center_freq1 > chandef->chan->center_freq)
3554 chandef->center_freq1 -= 40;
3556 chandef->center_freq1 += 40;
3562 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
3563 const struct ieee80211_he_operation *he_oper,
3564 const struct ieee80211_eht_operation *eht_oper,
3565 struct cfg80211_chan_def *chandef)
3567 struct ieee80211_local *local = sdata->local;
3568 struct ieee80211_supported_band *sband;
3569 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3570 const struct ieee80211_sta_he_cap *he_cap;
3571 const struct ieee80211_sta_eht_cap *eht_cap;
3572 struct cfg80211_chan_def he_chandef = *chandef;
3573 const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3574 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3575 bool support_80_80, support_160, support_320;
3576 u8 he_phy_cap, eht_phy_cap;
3579 if (chandef->chan->band != NL80211_BAND_6GHZ)
3582 sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3584 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3586 sdata_info(sdata, "Missing iftype sband data/HE cap");
3590 he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
3593 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3596 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3600 "HE is not advertised on (on %d MHz), expect issues\n",
3601 chandef->chan->center_freq);
3605 eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
3607 sdata_info(sdata, "Missing iftype sband data/EHT cap");
3611 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3613 if (!he_6ghz_oper) {
3615 "HE 6GHz operation missing (on %d MHz), expect issues\n",
3616 chandef->chan->center_freq);
3621 * The EHT operation IE does not contain the primary channel so the
3622 * primary channel frequency should be taken from the 6 GHz operation
3625 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3627 he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
3629 switch (u8_get_bits(he_6ghz_oper->control,
3630 IEEE80211_HE_6GHZ_OPER_CTRL_REG_INFO)) {
3631 case IEEE80211_6GHZ_CTRL_REG_LPI_AP:
3632 bss_conf->power_type = IEEE80211_REG_LPI_AP;
3634 case IEEE80211_6GHZ_CTRL_REG_SP_AP:
3635 bss_conf->power_type = IEEE80211_REG_SP_AP;
3638 bss_conf->power_type = IEEE80211_REG_UNSET_AP;
3643 !(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) {
3644 switch (u8_get_bits(he_6ghz_oper->control,
3645 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3646 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3647 he_chandef.width = NL80211_CHAN_WIDTH_20;
3649 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3650 he_chandef.width = NL80211_CHAN_WIDTH_40;
3652 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3653 he_chandef.width = NL80211_CHAN_WIDTH_80;
3655 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3656 he_chandef.width = NL80211_CHAN_WIDTH_80;
3657 if (!he_6ghz_oper->ccfs1)
3659 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) {
3661 he_chandef.width = NL80211_CHAN_WIDTH_160;
3664 he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3669 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3670 he_chandef.center_freq1 =
3671 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3674 he_chandef.center_freq1 =
3675 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3677 if (support_80_80 || support_160)
3678 he_chandef.center_freq2 =
3679 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3683 eht_phy_cap = eht_cap->eht_cap_elem.phy_cap_info[0];
3685 eht_phy_cap & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ;
3687 ieee80211_chandef_eht_oper(sdata, eht_oper, support_160,
3688 support_320, &he_chandef);
3691 if (!cfg80211_chandef_valid(&he_chandef)) {
3693 "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n",
3694 he_chandef.chan ? he_chandef.chan->center_freq : 0,
3696 he_chandef.center_freq1,
3697 he_chandef.center_freq2);
3701 *chandef = he_chandef;
3706 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
3707 struct cfg80211_chan_def *chandef)
3714 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) {
3715 case IEEE80211_S1G_CHANWIDTH_1MHZ:
3716 chandef->width = NL80211_CHAN_WIDTH_1;
3718 case IEEE80211_S1G_CHANWIDTH_2MHZ:
3719 chandef->width = NL80211_CHAN_WIDTH_2;
3721 case IEEE80211_S1G_CHANWIDTH_4MHZ:
3722 chandef->width = NL80211_CHAN_WIDTH_4;
3724 case IEEE80211_S1G_CHANWIDTH_8MHZ:
3725 chandef->width = NL80211_CHAN_WIDTH_8;
3727 case IEEE80211_S1G_CHANWIDTH_16MHZ:
3728 chandef->width = NL80211_CHAN_WIDTH_16;
3734 oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch,
3735 NL80211_BAND_S1GHZ);
3736 chandef->center_freq1 = KHZ_TO_MHZ(oper_freq);
3737 chandef->freq1_offset = oper_freq % 1000;
3742 int ieee80211_parse_bitrates(enum nl80211_chan_width width,
3743 const struct ieee80211_supported_band *sband,
3744 const u8 *srates, int srates_len, u32 *rates)
3746 u32 rate_flags = ieee80211_chanwidth_rate_flags(width);
3747 int shift = ieee80211_chanwidth_get_shift(width);
3748 struct ieee80211_rate *br;
3749 int brate, rate, i, j, count = 0;
3753 for (i = 0; i < srates_len; i++) {
3754 rate = srates[i] & 0x7f;
3756 for (j = 0; j < sband->n_bitrates; j++) {
3757 br = &sband->bitrates[j];
3758 if ((rate_flags & br->flags) != rate_flags)
3761 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3762 if (brate == rate) {
3772 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
3773 struct sk_buff *skb, bool need_basic,
3774 enum nl80211_band band)
3776 struct ieee80211_local *local = sdata->local;
3777 struct ieee80211_supported_band *sband;
3780 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3783 shift = ieee80211_vif_get_shift(&sdata->vif);
3784 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3785 sband = local->hw.wiphy->bands[band];
3787 for (i = 0; i < sband->n_bitrates; i++) {
3788 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3795 if (skb_tailroom(skb) < rates + 2)
3798 pos = skb_put(skb, rates + 2);
3799 *pos++ = WLAN_EID_SUPP_RATES;
3801 for (i = 0; i < rates; i++) {
3803 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3806 if (need_basic && basic_rates & BIT(i))
3808 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3810 *pos++ = basic | (u8) rate;
3816 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
3817 struct sk_buff *skb, bool need_basic,
3818 enum nl80211_band band)
3820 struct ieee80211_local *local = sdata->local;
3821 struct ieee80211_supported_band *sband;
3823 u8 i, exrates, *pos;
3824 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3827 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3828 shift = ieee80211_vif_get_shift(&sdata->vif);
3830 sband = local->hw.wiphy->bands[band];
3832 for (i = 0; i < sband->n_bitrates; i++) {
3833 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3843 if (skb_tailroom(skb) < exrates + 2)
3847 pos = skb_put(skb, exrates + 2);
3848 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3850 for (i = 8; i < sband->n_bitrates; i++) {
3852 if ((rate_flags & sband->bitrates[i].flags)
3855 if (need_basic && basic_rates & BIT(i))
3857 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3859 *pos++ = basic | (u8) rate;
3865 int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3867 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3869 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
3872 return -ewma_beacon_signal_read(&sdata->deflink.u.mgd.ave_beacon_signal);
3874 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
3876 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3881 /* TODO: consider rx_highest */
3883 if (mcs->rx_mask[3])
3885 if (mcs->rx_mask[2])
3887 if (mcs->rx_mask[1])
3893 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3894 * @local: mac80211 hw info struct
3895 * @status: RX status
3896 * @mpdu_len: total MPDU length (including FCS)
3897 * @mpdu_offset: offset into MPDU to calculate timestamp at
3899 * This function calculates the RX timestamp at the given MPDU offset, taking
3900 * into account what the RX timestamp was. An offset of 0 will just normalize
3901 * the timestamp to TSF at beginning of MPDU reception.
3903 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3904 struct ieee80211_rx_status *status,
3905 unsigned int mpdu_len,
3906 unsigned int mpdu_offset)
3908 u64 ts = status->mactime;
3909 struct rate_info ri;
3913 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3916 memset(&ri, 0, sizeof(ri));
3920 /* Fill cfg80211 rate info */
3921 switch (status->encoding) {
3923 ri.flags |= RATE_INFO_FLAGS_HE_MCS;
3924 ri.mcs = status->rate_idx;
3925 ri.nss = status->nss;
3926 ri.he_ru_alloc = status->he_ru;
3927 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3928 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3931 * See P802.11ax_D6.0, section 27.3.4 for
3934 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3940 * For HE MU PPDU, add the HE-SIG-B.
3941 * For HE ER PPDU, add 8us for the HE-SIG-A.
3942 * For HE TB PPDU, add 4us for the HE-STF.
3943 * Add the HE-LTF durations - variable.
3949 ri.mcs = status->rate_idx;
3950 ri.flags |= RATE_INFO_FLAGS_MCS;
3951 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3952 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3955 * See P802.11REVmd_D3.0, section 19.3.2 for
3958 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3960 if (status->enc_flags & RX_ENC_FLAG_HT_GF)
3966 * Add Data HT-LTFs per streams
3967 * TODO: add Extension HT-LTFs, 4us per LTF
3969 n_ltf = ((ri.mcs >> 3) & 3) + 1;
3970 n_ltf = n_ltf == 3 ? 4 : n_ltf;
3976 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3977 ri.mcs = status->rate_idx;
3978 ri.nss = status->nss;
3979 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3980 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3983 * See P802.11REVmd_D3.0, section 21.3.2 for
3986 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3991 * Add VHT-LTFs per streams
3993 n_ltf = (ri.nss != 1) && (ri.nss % 2) ?
3994 ri.nss + 1 : ri.nss;
4002 case RX_ENC_LEGACY: {
4003 struct ieee80211_supported_band *sband;
4007 switch (status->bw) {
4008 case RATE_INFO_BW_10:
4011 case RATE_INFO_BW_5:
4016 sband = local->hw.wiphy->bands[status->band];
4017 bitrate = sband->bitrates[status->rate_idx].bitrate;
4018 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
4020 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
4021 if (status->band == NL80211_BAND_5GHZ) {
4024 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
4034 rate = cfg80211_calculate_bitrate(&ri);
4035 if (WARN_ONCE(!rate,
4036 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
4037 (unsigned long long)status->flag, status->rate_idx,
4041 /* rewind from end of MPDU */
4042 if (status->flag & RX_FLAG_MACTIME_END)
4043 ts -= mpdu_len * 8 * 10 / rate;
4045 ts += mpdu_offset * 8 * 10 / rate;
4050 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
4052 struct ieee80211_sub_if_data *sdata;
4053 struct cfg80211_chan_def chandef;
4055 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
4056 lockdep_assert_wiphy(local->hw.wiphy);
4058 mutex_lock(&local->mtx);
4059 list_for_each_entry(sdata, &local->interfaces, list) {
4060 /* it might be waiting for the local->mtx, but then
4061 * by the time it gets it, sdata->wdev.cac_started
4062 * will no longer be true
4064 cancel_delayed_work(&sdata->deflink.dfs_cac_timer_work);
4066 if (sdata->wdev.cac_started) {
4067 chandef = sdata->vif.bss_conf.chandef;
4068 ieee80211_link_release_channel(&sdata->deflink);
4069 cfg80211_cac_event(sdata->dev,
4071 NL80211_RADAR_CAC_ABORTED,
4075 mutex_unlock(&local->mtx);
4078 void ieee80211_dfs_radar_detected_work(struct work_struct *work)
4080 struct ieee80211_local *local =
4081 container_of(work, struct ieee80211_local, radar_detected_work);
4082 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
4083 struct ieee80211_chanctx *ctx;
4084 int num_chanctx = 0;
4086 mutex_lock(&local->chanctx_mtx);
4087 list_for_each_entry(ctx, &local->chanctx_list, list) {
4088 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
4092 chandef = ctx->conf.def;
4094 mutex_unlock(&local->chanctx_mtx);
4096 wiphy_lock(local->hw.wiphy);
4097 ieee80211_dfs_cac_cancel(local);
4098 wiphy_unlock(local->hw.wiphy);
4100 if (num_chanctx > 1)
4101 /* XXX: multi-channel is not supported yet */
4104 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
4107 void ieee80211_radar_detected(struct ieee80211_hw *hw)
4109 struct ieee80211_local *local = hw_to_local(hw);
4111 trace_api_radar_detected(local);
4113 schedule_work(&local->radar_detected_work);
4115 EXPORT_SYMBOL(ieee80211_radar_detected);
4117 ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
4119 ieee80211_conn_flags_t ret;
4123 case NL80211_CHAN_WIDTH_20:
4124 c->width = NL80211_CHAN_WIDTH_20_NOHT;
4125 ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
4127 case NL80211_CHAN_WIDTH_40:
4128 c->width = NL80211_CHAN_WIDTH_20;
4129 c->center_freq1 = c->chan->center_freq;
4130 ret = IEEE80211_CONN_DISABLE_40MHZ |
4131 IEEE80211_CONN_DISABLE_VHT;
4133 case NL80211_CHAN_WIDTH_80:
4134 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
4138 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
4139 c->width = NL80211_CHAN_WIDTH_40;
4140 ret = IEEE80211_CONN_DISABLE_VHT;
4142 case NL80211_CHAN_WIDTH_80P80:
4143 c->center_freq2 = 0;
4144 c->width = NL80211_CHAN_WIDTH_80;
4145 ret = IEEE80211_CONN_DISABLE_80P80MHZ |
4146 IEEE80211_CONN_DISABLE_160MHZ;
4148 case NL80211_CHAN_WIDTH_160:
4150 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
4153 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
4154 c->width = NL80211_CHAN_WIDTH_80;
4155 ret = IEEE80211_CONN_DISABLE_80P80MHZ |
4156 IEEE80211_CONN_DISABLE_160MHZ;
4158 case NL80211_CHAN_WIDTH_320:
4160 tmp = (150 + c->chan->center_freq - c->center_freq1) / 20;
4163 c->center_freq1 = c->center_freq1 - 80 + 160 * tmp;
4164 c->width = NL80211_CHAN_WIDTH_160;
4165 ret = IEEE80211_CONN_DISABLE_320MHZ;
4168 case NL80211_CHAN_WIDTH_20_NOHT:
4170 c->width = NL80211_CHAN_WIDTH_20_NOHT;
4171 ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
4173 case NL80211_CHAN_WIDTH_1:
4174 case NL80211_CHAN_WIDTH_2:
4175 case NL80211_CHAN_WIDTH_4:
4176 case NL80211_CHAN_WIDTH_8:
4177 case NL80211_CHAN_WIDTH_16:
4178 case NL80211_CHAN_WIDTH_5:
4179 case NL80211_CHAN_WIDTH_10:
4182 ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
4186 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
4192 * Returns true if smps_mode_new is strictly more restrictive than
4195 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
4196 enum ieee80211_smps_mode smps_mode_new)
4198 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
4199 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
4202 switch (smps_mode_old) {
4203 case IEEE80211_SMPS_STATIC:
4205 case IEEE80211_SMPS_DYNAMIC:
4206 return smps_mode_new == IEEE80211_SMPS_STATIC;
4207 case IEEE80211_SMPS_OFF:
4208 return smps_mode_new != IEEE80211_SMPS_OFF;
4216 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
4217 struct cfg80211_csa_settings *csa_settings)
4219 struct sk_buff *skb;
4220 struct ieee80211_mgmt *mgmt;
4221 struct ieee80211_local *local = sdata->local;
4223 int hdr_len = offsetofend(struct ieee80211_mgmt,
4224 u.action.u.chan_switch);
4227 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
4228 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
4231 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
4232 5 + /* channel switch announcement element */
4233 3 + /* secondary channel offset element */
4234 5 + /* wide bandwidth channel switch announcement */
4235 8); /* mesh channel switch parameters element */
4239 skb_reserve(skb, local->tx_headroom);
4240 mgmt = skb_put_zero(skb, hdr_len);
4241 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
4242 IEEE80211_STYPE_ACTION);
4244 eth_broadcast_addr(mgmt->da);
4245 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
4246 if (ieee80211_vif_is_mesh(&sdata->vif)) {
4247 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
4249 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
4250 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
4252 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
4253 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
4254 pos = skb_put(skb, 5);
4255 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
4256 *pos++ = 3; /* IE length */
4257 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
4258 freq = csa_settings->chandef.chan->center_freq;
4259 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
4260 *pos++ = csa_settings->count; /* count */
4262 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
4263 enum nl80211_channel_type ch_type;
4266 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
4267 *pos++ = 1; /* IE length */
4268 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
4269 if (ch_type == NL80211_CHAN_HT40PLUS)
4270 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
4272 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
4275 if (ieee80211_vif_is_mesh(&sdata->vif)) {
4276 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
4279 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
4280 *pos++ = 6; /* IE length */
4281 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
4282 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
4283 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
4284 *pos++ |= csa_settings->block_tx ?
4285 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
4286 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
4288 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
4292 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
4293 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
4294 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
4296 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
4299 ieee80211_tx_skb(sdata, skb);
4304 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
4306 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
4313 if (data->count[i] == 1)
4316 if (data->desc[i].interval == 0)
4319 /* End time is in the past, check for repetitions */
4320 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
4321 if (data->count[i] < 255) {
4322 if (data->count[i] <= skip) {
4327 data->count[i] -= skip;
4330 data->desc[i].start += skip * data->desc[i].interval;
4336 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
4342 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4345 if (!data->count[i])
4348 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
4351 cur = data->desc[i].start - tsf;
4355 cur = data->desc[i].start + data->desc[i].duration - tsf;
4364 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
4369 * arbitrary limit, used to avoid infinite loops when combined NoA
4370 * descriptors cover the full time period.
4374 ieee80211_extend_absent_time(data, tsf, &offset);
4376 if (!ieee80211_extend_absent_time(data, tsf, &offset))
4380 } while (tries < max_tries);
4385 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
4387 u32 next_offset = BIT(31) - 1;
4391 data->has_next_tsf = false;
4392 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4395 if (!data->count[i])
4398 ieee80211_extend_noa_desc(data, tsf, i);
4399 start = data->desc[i].start - tsf;
4401 data->absent |= BIT(i);
4403 if (next_offset > start)
4404 next_offset = start;
4406 data->has_next_tsf = true;
4410 next_offset = ieee80211_get_noa_absent_time(data, tsf);
4412 data->next_tsf = tsf + next_offset;
4414 EXPORT_SYMBOL(ieee80211_update_p2p_noa);
4416 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
4417 struct ieee80211_noa_data *data, u32 tsf)
4422 memset(data, 0, sizeof(*data));
4424 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4425 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
4427 if (!desc->count || !desc->duration)
4430 data->count[i] = desc->count;
4431 data->desc[i].start = le32_to_cpu(desc->start_time);
4432 data->desc[i].duration = le32_to_cpu(desc->duration);
4433 data->desc[i].interval = le32_to_cpu(desc->interval);
4435 if (data->count[i] > 1 &&
4436 data->desc[i].interval < data->desc[i].duration)
4439 ieee80211_extend_noa_desc(data, tsf, i);
4444 ieee80211_update_p2p_noa(data, tsf);
4448 EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
4450 void ieee80211_recalc_dtim(struct ieee80211_local *local,
4451 struct ieee80211_sub_if_data *sdata)
4453 u64 tsf = drv_get_tsf(local, sdata);
4455 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
4456 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
4460 if (tsf == -1ULL || !beacon_int || !dtim_period)
4463 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4464 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
4468 ps = &sdata->bss->ps;
4469 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
4470 ps = &sdata->u.mesh.ps;
4476 * actually finds last dtim_count, mac80211 will update in
4477 * __beacon_add_tim().
4478 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
4480 do_div(tsf, beacon_int);
4481 bcns_from_dtim = do_div(tsf, dtim_period);
4482 /* just had a DTIM */
4483 if (!bcns_from_dtim)
4486 dtim_count = dtim_period - bcns_from_dtim;
4488 ps->dtim_count = dtim_count;
4491 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
4492 struct ieee80211_chanctx *ctx)
4494 struct ieee80211_link_data *link;
4495 u8 radar_detect = 0;
4497 lockdep_assert_held(&local->chanctx_mtx);
4499 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
4502 list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list)
4503 if (link->reserved_radar_required)
4504 radar_detect |= BIT(link->reserved_chandef.width);
4507 * An in-place reservation context should not have any assigned vifs
4508 * until it replaces the other context.
4510 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
4511 !list_empty(&ctx->assigned_links));
4513 list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) {
4514 if (!link->radar_required)
4518 BIT(link->conf->chandef.width);
4521 return radar_detect;
4524 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4525 const struct cfg80211_chan_def *chandef,
4526 enum ieee80211_chanctx_mode chanmode,
4529 struct ieee80211_local *local = sdata->local;
4530 struct ieee80211_sub_if_data *sdata_iter;
4531 enum nl80211_iftype iftype = sdata->wdev.iftype;
4532 struct ieee80211_chanctx *ctx;
4534 struct iface_combination_params params = {
4535 .radar_detect = radar_detect,
4538 lockdep_assert_held(&local->chanctx_mtx);
4540 if (WARN_ON(hweight32(radar_detect) > 1))
4543 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4547 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4550 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4551 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4553 * always passing this is harmless, since it'll be the
4554 * same value that cfg80211 finds if it finds the same
4555 * interface ... and that's always allowed
4557 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4560 /* Always allow software iftypes */
4561 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
4568 params.num_different_channels = 1;
4570 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
4571 params.iftype_num[iftype] = 1;
4573 list_for_each_entry(ctx, &local->chanctx_list, list) {
4574 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4576 params.radar_detect |=
4577 ieee80211_chanctx_radar_detect(local, ctx);
4578 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
4579 params.num_different_channels++;
4582 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4583 cfg80211_chandef_compatible(chandef,
4586 params.num_different_channels++;
4589 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4590 struct wireless_dev *wdev_iter;
4592 wdev_iter = &sdata_iter->wdev;
4594 if (sdata_iter == sdata ||
4595 !ieee80211_sdata_running(sdata_iter) ||
4596 cfg80211_iftype_allowed(local->hw.wiphy,
4597 wdev_iter->iftype, 0, 1))
4600 params.iftype_num[wdev_iter->iftype]++;
4604 if (total == 1 && !params.radar_detect)
4607 return cfg80211_check_combinations(local->hw.wiphy, ¶ms);
4611 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4614 u32 *max_num_different_channels = data;
4616 *max_num_different_channels = max(*max_num_different_channels,
4617 c->num_different_channels);
4620 int ieee80211_max_num_channels(struct ieee80211_local *local)
4622 struct ieee80211_sub_if_data *sdata;
4623 struct ieee80211_chanctx *ctx;
4624 u32 max_num_different_channels = 1;
4626 struct iface_combination_params params = {0};
4628 lockdep_assert_held(&local->chanctx_mtx);
4630 list_for_each_entry(ctx, &local->chanctx_list, list) {
4631 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4634 params.num_different_channels++;
4636 params.radar_detect |=
4637 ieee80211_chanctx_radar_detect(local, ctx);
4640 list_for_each_entry_rcu(sdata, &local->interfaces, list)
4641 params.iftype_num[sdata->wdev.iftype]++;
4643 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms,
4644 ieee80211_iter_max_chans,
4645 &max_num_different_channels);
4649 return max_num_different_channels;
4652 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
4653 struct ieee80211_sta_s1g_cap *caps,
4654 struct sk_buff *skb)
4656 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4657 struct ieee80211_s1g_cap s1g_capab;
4661 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
4667 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap));
4668 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs));
4670 /* override the capability info */
4671 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
4672 u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
4674 s1g_capab.capab_info[i] &= ~mask;
4675 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask;
4678 /* then MCS and NSS set */
4679 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
4680 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
4682 s1g_capab.supp_mcs_nss[i] &= ~mask;
4683 s1g_capab.supp_mcs_nss[i] |=
4684 ifmgd->s1g_capa.supp_mcs_nss[i] & mask;
4687 pos = skb_put(skb, 2 + sizeof(s1g_capab));
4688 *pos++ = WLAN_EID_S1G_CAPABILITIES;
4689 *pos++ = sizeof(s1g_capab);
4691 memcpy(pos, &s1g_capab, sizeof(s1g_capab));
4694 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
4695 struct sk_buff *skb)
4697 u8 *pos = skb_put(skb, 3);
4699 *pos++ = WLAN_EID_AID_REQUEST;
4704 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4706 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4707 *buf++ = 7; /* len */
4708 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4711 *buf++ = 2; /* WME */
4712 *buf++ = 0; /* WME info */
4713 *buf++ = 1; /* WME ver */
4714 *buf++ = qosinfo; /* U-APSD no in use */
4719 void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4720 unsigned long *frame_cnt,
4721 unsigned long *byte_cnt)
4723 struct txq_info *txqi = to_txq_info(txq);
4724 u32 frag_cnt = 0, frag_bytes = 0;
4725 struct sk_buff *skb;
4727 skb_queue_walk(&txqi->frags, skb) {
4729 frag_bytes += skb->len;
4733 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
4736 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
4738 EXPORT_SYMBOL(ieee80211_txq_get_depth);
4740 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4741 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4742 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4743 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4744 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
4747 u16 ieee80211_encode_usf(int listen_interval)
4749 static const int listen_int_usf[] = { 1, 10, 1000, 10000 };
4752 /* find greatest USF */
4753 while (usf < IEEE80211_MAX_USF) {
4754 if (listen_interval % listen_int_usf[usf + 1])
4758 ui = listen_interval / listen_int_usf[usf];
4760 /* error if there is a remainder. Should've been checked by user */
4761 WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
4762 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
4763 FIELD_PREP(LISTEN_INT_UI, ui);
4765 return (u16) listen_interval;
4768 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
4770 const struct ieee80211_sta_he_cap *he_cap;
4771 const struct ieee80211_sta_eht_cap *eht_cap;
4772 struct ieee80211_supported_band *sband;
4775 sband = ieee80211_get_sband(sdata);
4779 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
4780 eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
4781 if (!he_cap || !eht_cap)
4784 n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4785 &eht_cap->eht_cap_elem);
4787 sizeof(he_cap->he_cap_elem) + n +
4788 ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4789 eht_cap->eht_cap_elem.phy_cap_info);
4793 u8 *ieee80211_ie_build_eht_cap(u8 *pos,
4794 const struct ieee80211_sta_he_cap *he_cap,
4795 const struct ieee80211_sta_eht_cap *eht_cap,
4798 u8 mcs_nss_len, ppet_len;
4802 /* Make sure we have place for the IE */
4803 if (!he_cap || !eht_cap)
4806 mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4807 &eht_cap->eht_cap_elem);
4808 ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4809 eht_cap->eht_cap_elem.phy_cap_info);
4811 ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len;
4812 if ((end - pos) < ie_len)
4815 *pos++ = WLAN_EID_EXTENSION;
4816 *pos++ = ie_len - 2;
4817 *pos++ = WLAN_EID_EXT_EHT_CAPABILITY;
4820 memcpy(pos, &eht_cap->eht_cap_elem, sizeof(eht_cap->eht_cap_elem));
4821 pos += sizeof(eht_cap->eht_cap_elem);
4823 memcpy(pos, &eht_cap->eht_mcs_nss_supp, mcs_nss_len);
4827 memcpy(pos, &eht_cap->eht_ppe_thres, ppet_len);
4834 void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos)
4836 unsigned int elem_len;
4841 elem_len = skb->data + skb->len - len_pos - 1;
4843 while (elem_len > 255) {
4844 /* this one is 255 */
4846 /* remaining data gets smaller */
4848 /* make space for the fragment ID/len in SKB */
4850 /* shift back the remaining data to place fragment ID/len */
4851 memmove(len_pos + 255 + 3, len_pos + 255 + 1, elem_len);
4852 /* place the fragment ID */
4854 *len_pos = WLAN_EID_FRAGMENT;
4855 /* and point to fragment length to update later */
4859 *len_pos = elem_len;