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) 2018-2020 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 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
51 struct ieee80211_hdr *hdr;
53 skb_queue_walk(&tx->skbs, skb) {
54 hdr = (struct ieee80211_hdr *) skb->data;
55 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
59 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
60 int rate, int erp, int short_preamble,
65 /* calculate duration (in microseconds, rounded up to next higher
66 * integer if it includes a fractional microsecond) to send frame of
67 * len bytes (does not include FCS) at the given rate. Duration will
70 * rate is in 100 kbps, so divident is multiplied by 10 in the
71 * DIV_ROUND_UP() operations.
73 * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
74 * is assumed to be 0 otherwise.
77 if (band == NL80211_BAND_5GHZ || erp) {
81 * N_DBPS = DATARATE x 4
82 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
83 * (16 = SIGNAL time, 6 = tail bits)
84 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
87 * 802.11a - 18.5.2: aSIFSTime = 16 usec
88 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
91 dur = 16; /* SIFS + signal ext */
92 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
93 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
95 /* IEEE 802.11-2012 18.3.2.4: all values above are:
97 * * times 2 for 10 MHz
101 /* rates should already consider the channel bandwidth,
102 * don't apply divisor again.
104 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
105 4 * rate); /* T_SYM x N_SYM */
108 * 802.11b or 802.11g with 802.11b compatibility:
109 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
110 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
112 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
113 * aSIFSTime = 10 usec
114 * aPreambleLength = 144 usec or 72 usec with short preamble
115 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
117 dur = 10; /* aSIFSTime = 10 usec */
118 dur += short_preamble ? (72 + 24) : (144 + 48);
120 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
126 /* Exported duration function for driver use */
127 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
128 struct ieee80211_vif *vif,
129 enum nl80211_band band,
131 struct ieee80211_rate *rate)
133 struct ieee80211_sub_if_data *sdata;
136 bool short_preamble = false;
140 sdata = vif_to_sdata(vif);
141 short_preamble = sdata->vif.bss_conf.use_short_preamble;
142 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
143 erp = rate->flags & IEEE80211_RATE_ERP_G;
144 shift = ieee80211_vif_get_shift(vif);
147 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
148 short_preamble, shift);
150 return cpu_to_le16(dur);
152 EXPORT_SYMBOL(ieee80211_generic_frame_duration);
154 __le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
155 struct ieee80211_vif *vif, size_t frame_len,
156 const struct ieee80211_tx_info *frame_txctl)
158 struct ieee80211_local *local = hw_to_local(hw);
159 struct ieee80211_rate *rate;
160 struct ieee80211_sub_if_data *sdata;
162 int erp, shift = 0, bitrate;
164 struct ieee80211_supported_band *sband;
166 sband = local->hw.wiphy->bands[frame_txctl->band];
168 short_preamble = false;
170 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
174 sdata = vif_to_sdata(vif);
175 short_preamble = sdata->vif.bss_conf.use_short_preamble;
176 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
177 erp = rate->flags & IEEE80211_RATE_ERP_G;
178 shift = ieee80211_vif_get_shift(vif);
181 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
184 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
185 erp, short_preamble, shift);
186 /* Data frame duration */
187 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
188 erp, short_preamble, shift);
190 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
191 erp, short_preamble, shift);
193 return cpu_to_le16(dur);
195 EXPORT_SYMBOL(ieee80211_rts_duration);
197 __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
198 struct ieee80211_vif *vif,
200 const struct ieee80211_tx_info *frame_txctl)
202 struct ieee80211_local *local = hw_to_local(hw);
203 struct ieee80211_rate *rate;
204 struct ieee80211_sub_if_data *sdata;
206 int erp, shift = 0, bitrate;
208 struct ieee80211_supported_band *sband;
210 sband = local->hw.wiphy->bands[frame_txctl->band];
212 short_preamble = false;
214 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
217 sdata = vif_to_sdata(vif);
218 short_preamble = sdata->vif.bss_conf.use_short_preamble;
219 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
220 erp = rate->flags & IEEE80211_RATE_ERP_G;
221 shift = ieee80211_vif_get_shift(vif);
224 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
226 /* Data frame duration */
227 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
228 erp, short_preamble, shift);
229 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
231 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
232 erp, short_preamble, shift);
235 return cpu_to_le16(dur);
237 EXPORT_SYMBOL(ieee80211_ctstoself_duration);
239 static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
241 struct ieee80211_local *local = sdata->local;
242 struct ieee80211_vif *vif = &sdata->vif;
243 struct fq *fq = &local->fq;
244 struct ps_data *ps = NULL;
245 struct txq_info *txqi;
246 struct sta_info *sta;
250 spin_lock(&fq->lock);
252 if (sdata->vif.type == NL80211_IFTYPE_AP)
253 ps = &sdata->bss->ps;
255 sdata->vif.txqs_stopped[ac] = false;
257 list_for_each_entry_rcu(sta, &local->sta_list, list) {
258 if (sdata != sta->sdata)
261 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
262 struct ieee80211_txq *txq = sta->sta.txq[i];
267 txqi = to_txq_info(txq);
272 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX,
276 spin_unlock(&fq->lock);
277 drv_wake_tx_queue(local, txqi);
278 spin_lock(&fq->lock);
285 txqi = to_txq_info(vif->txq);
287 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, &txqi->flags) ||
288 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
291 spin_unlock(&fq->lock);
293 drv_wake_tx_queue(local, txqi);
297 spin_unlock(&fq->lock);
302 __releases(&local->queue_stop_reason_lock)
303 __acquires(&local->queue_stop_reason_lock)
304 _ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
306 struct ieee80211_sub_if_data *sdata;
307 int n_acs = IEEE80211_NUM_ACS;
312 if (local->hw.queues < IEEE80211_NUM_ACS)
315 for (i = 0; i < local->hw.queues; i++) {
316 if (local->queue_stop_reasons[i])
319 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
320 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
323 for (ac = 0; ac < n_acs; ac++) {
324 int ac_queue = sdata->vif.hw_queue[ac];
327 sdata->vif.cab_queue == i)
328 __ieee80211_wake_txqs(sdata, ac);
331 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
337 void ieee80211_wake_txqs(unsigned long data)
339 struct ieee80211_local *local = (struct ieee80211_local *)data;
342 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
343 _ieee80211_wake_txqs(local, &flags);
344 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
347 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
349 struct ieee80211_sub_if_data *sdata;
350 int n_acs = IEEE80211_NUM_ACS;
352 if (local->ops->wake_tx_queue)
355 if (local->hw.queues < IEEE80211_NUM_ACS)
358 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
364 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
365 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
368 for (ac = 0; ac < n_acs; ac++) {
369 int ac_queue = sdata->vif.hw_queue[ac];
371 if (ac_queue == queue ||
372 (sdata->vif.cab_queue == queue &&
373 local->queue_stop_reasons[ac_queue] == 0 &&
374 skb_queue_empty(&local->pending[ac_queue])))
375 netif_wake_subqueue(sdata->dev, ac);
380 static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
381 enum queue_stop_reason reason,
383 unsigned long *flags)
385 struct ieee80211_local *local = hw_to_local(hw);
387 trace_wake_queue(local, queue, reason);
389 if (WARN_ON(queue >= hw->queues))
392 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
396 local->q_stop_reasons[queue][reason] = 0;
398 local->q_stop_reasons[queue][reason]--;
399 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
400 local->q_stop_reasons[queue][reason] = 0;
403 if (local->q_stop_reasons[queue][reason] == 0)
404 __clear_bit(reason, &local->queue_stop_reasons[queue]);
406 if (local->queue_stop_reasons[queue] != 0)
407 /* someone still has this queue stopped */
410 if (skb_queue_empty(&local->pending[queue])) {
412 ieee80211_propagate_queue_wake(local, queue);
415 tasklet_schedule(&local->tx_pending_tasklet);
418 * Calling _ieee80211_wake_txqs here can be a problem because it may
419 * release queue_stop_reason_lock which has been taken by
420 * __ieee80211_wake_queue's caller. It is certainly not very nice to
421 * release someone's lock, but it is fine because all the callers of
422 * __ieee80211_wake_queue call it right before releasing the lock.
424 if (local->ops->wake_tx_queue) {
425 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
426 tasklet_schedule(&local->wake_txqs_tasklet);
428 _ieee80211_wake_txqs(local, flags);
432 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
433 enum queue_stop_reason reason,
436 struct ieee80211_local *local = hw_to_local(hw);
439 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
440 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
441 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
444 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
446 ieee80211_wake_queue_by_reason(hw, queue,
447 IEEE80211_QUEUE_STOP_REASON_DRIVER,
450 EXPORT_SYMBOL(ieee80211_wake_queue);
452 static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
453 enum queue_stop_reason reason,
456 struct ieee80211_local *local = hw_to_local(hw);
457 struct ieee80211_sub_if_data *sdata;
458 int n_acs = IEEE80211_NUM_ACS;
460 trace_stop_queue(local, queue, reason);
462 if (WARN_ON(queue >= hw->queues))
466 local->q_stop_reasons[queue][reason] = 1;
468 local->q_stop_reasons[queue][reason]++;
470 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
473 if (local->hw.queues < IEEE80211_NUM_ACS)
477 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
483 for (ac = 0; ac < n_acs; ac++) {
484 if (sdata->vif.hw_queue[ac] == queue ||
485 sdata->vif.cab_queue == queue) {
486 if (!local->ops->wake_tx_queue) {
487 netif_stop_subqueue(sdata->dev, ac);
490 spin_lock(&local->fq.lock);
491 sdata->vif.txqs_stopped[ac] = true;
492 spin_unlock(&local->fq.lock);
499 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
500 enum queue_stop_reason reason,
503 struct ieee80211_local *local = hw_to_local(hw);
506 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
507 __ieee80211_stop_queue(hw, queue, reason, refcounted);
508 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
511 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
513 ieee80211_stop_queue_by_reason(hw, queue,
514 IEEE80211_QUEUE_STOP_REASON_DRIVER,
517 EXPORT_SYMBOL(ieee80211_stop_queue);
519 void ieee80211_add_pending_skb(struct ieee80211_local *local,
522 struct ieee80211_hw *hw = &local->hw;
524 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
525 int queue = info->hw_queue;
527 if (WARN_ON(!info->control.vif)) {
528 ieee80211_free_txskb(&local->hw, skb);
532 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
533 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
535 __skb_queue_tail(&local->pending[queue], skb);
536 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
538 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
541 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
542 struct sk_buff_head *skbs)
544 struct ieee80211_hw *hw = &local->hw;
549 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
550 while ((skb = skb_dequeue(skbs))) {
551 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
553 if (WARN_ON(!info->control.vif)) {
554 ieee80211_free_txskb(&local->hw, skb);
558 queue = info->hw_queue;
560 __ieee80211_stop_queue(hw, queue,
561 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
564 __skb_queue_tail(&local->pending[queue], skb);
567 for (i = 0; i < hw->queues; i++)
568 __ieee80211_wake_queue(hw, i,
569 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
571 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
574 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
575 unsigned long queues,
576 enum queue_stop_reason reason,
579 struct ieee80211_local *local = hw_to_local(hw);
583 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
585 for_each_set_bit(i, &queues, hw->queues)
586 __ieee80211_stop_queue(hw, i, reason, refcounted);
588 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
591 void ieee80211_stop_queues(struct ieee80211_hw *hw)
593 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
594 IEEE80211_QUEUE_STOP_REASON_DRIVER,
597 EXPORT_SYMBOL(ieee80211_stop_queues);
599 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
601 struct ieee80211_local *local = hw_to_local(hw);
605 if (WARN_ON(queue >= hw->queues))
608 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
609 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
610 &local->queue_stop_reasons[queue]);
611 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
614 EXPORT_SYMBOL(ieee80211_queue_stopped);
616 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
617 unsigned long queues,
618 enum queue_stop_reason reason,
621 struct ieee80211_local *local = hw_to_local(hw);
625 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
627 for_each_set_bit(i, &queues, hw->queues)
628 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
630 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
633 void ieee80211_wake_queues(struct ieee80211_hw *hw)
635 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
636 IEEE80211_QUEUE_STOP_REASON_DRIVER,
639 EXPORT_SYMBOL(ieee80211_wake_queues);
642 ieee80211_get_vif_queues(struct ieee80211_local *local,
643 struct ieee80211_sub_if_data *sdata)
647 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
652 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
653 queues |= BIT(sdata->vif.hw_queue[ac]);
654 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
655 queues |= BIT(sdata->vif.cab_queue);
658 queues = BIT(local->hw.queues) - 1;
664 void __ieee80211_flush_queues(struct ieee80211_local *local,
665 struct ieee80211_sub_if_data *sdata,
666 unsigned int queues, bool drop)
668 if (!local->ops->flush)
672 * If no queue was set, or if the HW doesn't support
673 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
675 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
676 queues = ieee80211_get_vif_queues(local, sdata);
678 ieee80211_stop_queues_by_reason(&local->hw, queues,
679 IEEE80211_QUEUE_STOP_REASON_FLUSH,
682 drv_flush(local, sdata, queues, drop);
684 ieee80211_wake_queues_by_reason(&local->hw, queues,
685 IEEE80211_QUEUE_STOP_REASON_FLUSH,
689 void ieee80211_flush_queues(struct ieee80211_local *local,
690 struct ieee80211_sub_if_data *sdata, bool drop)
692 __ieee80211_flush_queues(local, sdata, 0, drop);
695 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
696 struct ieee80211_sub_if_data *sdata,
697 enum queue_stop_reason reason)
699 ieee80211_stop_queues_by_reason(&local->hw,
700 ieee80211_get_vif_queues(local, sdata),
704 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
705 struct ieee80211_sub_if_data *sdata,
706 enum queue_stop_reason reason)
708 ieee80211_wake_queues_by_reason(&local->hw,
709 ieee80211_get_vif_queues(local, sdata),
713 static void __iterate_interfaces(struct ieee80211_local *local,
715 void (*iterator)(void *data, u8 *mac,
716 struct ieee80211_vif *vif),
719 struct ieee80211_sub_if_data *sdata;
720 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
722 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
723 switch (sdata->vif.type) {
724 case NL80211_IFTYPE_MONITOR:
725 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
728 case NL80211_IFTYPE_AP_VLAN:
733 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
734 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
736 if (ieee80211_sdata_running(sdata) || !active_only)
737 iterator(data, sdata->vif.addr,
741 sdata = rcu_dereference_check(local->monitor_sdata,
742 lockdep_is_held(&local->iflist_mtx) ||
743 lockdep_rtnl_is_held());
745 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
746 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
747 iterator(data, sdata->vif.addr, &sdata->vif);
750 void ieee80211_iterate_interfaces(
751 struct ieee80211_hw *hw, u32 iter_flags,
752 void (*iterator)(void *data, u8 *mac,
753 struct ieee80211_vif *vif),
756 struct ieee80211_local *local = hw_to_local(hw);
758 mutex_lock(&local->iflist_mtx);
759 __iterate_interfaces(local, iter_flags, iterator, data);
760 mutex_unlock(&local->iflist_mtx);
762 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
764 void ieee80211_iterate_active_interfaces_atomic(
765 struct ieee80211_hw *hw, u32 iter_flags,
766 void (*iterator)(void *data, u8 *mac,
767 struct ieee80211_vif *vif),
770 struct ieee80211_local *local = hw_to_local(hw);
773 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
777 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
779 void ieee80211_iterate_active_interfaces_rtnl(
780 struct ieee80211_hw *hw, u32 iter_flags,
781 void (*iterator)(void *data, u8 *mac,
782 struct ieee80211_vif *vif),
785 struct ieee80211_local *local = hw_to_local(hw);
789 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
792 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl);
794 static void __iterate_stations(struct ieee80211_local *local,
795 void (*iterator)(void *data,
796 struct ieee80211_sta *sta),
799 struct sta_info *sta;
801 list_for_each_entry_rcu(sta, &local->sta_list, list) {
805 iterator(data, &sta->sta);
809 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
810 void (*iterator)(void *data,
811 struct ieee80211_sta *sta),
814 struct ieee80211_local *local = hw_to_local(hw);
817 __iterate_stations(local, iterator, data);
820 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
822 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
824 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
826 if (!ieee80211_sdata_running(sdata) ||
827 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
831 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
833 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
835 struct ieee80211_sub_if_data *sdata;
840 sdata = vif_to_sdata(vif);
842 if (!ieee80211_sdata_running(sdata) ||
843 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
848 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
851 * Nothing should have been stuffed into the workqueue during
852 * the suspend->resume cycle. Since we can't check each caller
853 * of this function if we are already quiescing / suspended,
854 * check here and don't WARN since this can actually happen when
855 * the rx path (for example) is racing against __ieee80211_suspend
856 * and suspending / quiescing was set after the rx path checked
859 static bool ieee80211_can_queue_work(struct ieee80211_local *local)
861 if (local->quiescing || (local->suspended && !local->resuming)) {
862 pr_warn("queueing ieee80211 work while going to suspend\n");
869 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
871 struct ieee80211_local *local = hw_to_local(hw);
873 if (!ieee80211_can_queue_work(local))
876 queue_work(local->workqueue, work);
878 EXPORT_SYMBOL(ieee80211_queue_work);
880 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
881 struct delayed_work *dwork,
884 struct ieee80211_local *local = hw_to_local(hw);
886 if (!ieee80211_can_queue_work(local))
889 queue_delayed_work(local->workqueue, dwork, delay);
891 EXPORT_SYMBOL(ieee80211_queue_delayed_work);
893 static void ieee80211_parse_extension_element(u32 *crc,
894 const struct element *elem,
895 struct ieee802_11_elems *elems)
897 const void *data = elem->data + 1;
898 u8 len = elem->datalen - 1;
900 switch (elem->data[0]) {
901 case WLAN_EID_EXT_HE_MU_EDCA:
902 if (len == sizeof(*elems->mu_edca_param_set)) {
903 elems->mu_edca_param_set = data;
905 *crc = crc32_be(*crc, (void *)elem,
909 case WLAN_EID_EXT_HE_CAPABILITY:
910 elems->he_cap = data;
911 elems->he_cap_len = len;
913 case WLAN_EID_EXT_HE_OPERATION:
914 if (len >= sizeof(*elems->he_operation) &&
915 len == ieee80211_he_oper_size(data) - 1) {
917 *crc = crc32_be(*crc, (void *)elem,
919 elems->he_operation = data;
922 case WLAN_EID_EXT_UORA:
924 elems->uora_element = data;
926 case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME:
928 elems->max_channel_switch_time = data;
930 case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION:
931 if (len == sizeof(*elems->mbssid_config_ie))
932 elems->mbssid_config_ie = data;
934 case WLAN_EID_EXT_HE_SPR:
935 if (len >= sizeof(*elems->he_spr) &&
936 len >= ieee80211_he_spr_size(data))
937 elems->he_spr = data;
939 case WLAN_EID_EXT_HE_6GHZ_CAPA:
940 if (len == sizeof(*elems->he_6ghz_capa))
941 elems->he_6ghz_capa = data;
947 _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
948 struct ieee802_11_elems *elems,
950 const struct element *check_inherit)
952 const struct element *elem;
953 bool calc_crc = filter != 0;
954 DECLARE_BITMAP(seen_elems, 256);
957 bitmap_zero(seen_elems, 256);
959 for_each_element(elem, start, len) {
960 bool elem_parse_failed;
962 u8 elen = elem->datalen;
963 const u8 *pos = elem->data;
966 !cfg80211_is_element_inherited(elem,
972 case WLAN_EID_SUPP_RATES:
973 case WLAN_EID_FH_PARAMS:
974 case WLAN_EID_DS_PARAMS:
975 case WLAN_EID_CF_PARAMS:
977 case WLAN_EID_IBSS_PARAMS:
978 case WLAN_EID_CHALLENGE:
980 case WLAN_EID_ERP_INFO:
981 case WLAN_EID_EXT_SUPP_RATES:
982 case WLAN_EID_HT_CAPABILITY:
983 case WLAN_EID_HT_OPERATION:
984 case WLAN_EID_VHT_CAPABILITY:
985 case WLAN_EID_VHT_OPERATION:
986 case WLAN_EID_MESH_ID:
987 case WLAN_EID_MESH_CONFIG:
988 case WLAN_EID_PEER_MGMT:
993 case WLAN_EID_CHANNEL_SWITCH:
994 case WLAN_EID_EXT_CHANSWITCH_ANN:
995 case WLAN_EID_COUNTRY:
996 case WLAN_EID_PWR_CONSTRAINT:
997 case WLAN_EID_TIMEOUT_INTERVAL:
998 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
999 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1000 case WLAN_EID_CHAN_SWITCH_PARAM:
1001 case WLAN_EID_EXT_CAPABILITY:
1002 case WLAN_EID_CHAN_SWITCH_TIMING:
1003 case WLAN_EID_LINK_ID:
1004 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1007 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
1008 * that if the content gets bigger it might be needed more than once
1010 if (test_bit(id, seen_elems)) {
1011 elems->parse_error = true;
1017 if (calc_crc && id < 64 && (filter & (1ULL << id)))
1018 crc = crc32_be(crc, pos - 2, elen + 2);
1020 elem_parse_failed = false;
1023 case WLAN_EID_LINK_ID:
1024 if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) {
1025 elem_parse_failed = true;
1028 elems->lnk_id = (void *)(pos - 2);
1030 case WLAN_EID_CHAN_SWITCH_TIMING:
1031 if (elen != sizeof(struct ieee80211_ch_switch_timing)) {
1032 elem_parse_failed = true;
1035 elems->ch_sw_timing = (void *)pos;
1037 case WLAN_EID_EXT_CAPABILITY:
1038 elems->ext_capab = pos;
1039 elems->ext_capab_len = elen;
1043 elems->ssid_len = elen;
1045 case WLAN_EID_SUPP_RATES:
1046 elems->supp_rates = pos;
1047 elems->supp_rates_len = elen;
1049 case WLAN_EID_DS_PARAMS:
1051 elems->ds_params = pos;
1053 elem_parse_failed = true;
1056 if (elen >= sizeof(struct ieee80211_tim_ie)) {
1057 elems->tim = (void *)pos;
1058 elems->tim_len = elen;
1060 elem_parse_failed = true;
1062 case WLAN_EID_CHALLENGE:
1063 elems->challenge = pos;
1064 elems->challenge_len = elen;
1066 case WLAN_EID_VENDOR_SPECIFIC:
1067 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1069 /* Microsoft OUI (00:50:F2) */
1072 crc = crc32_be(crc, pos - 2, elen + 2);
1074 if (elen >= 5 && pos[3] == 2) {
1075 /* OUI Type 2 - WMM IE */
1077 elems->wmm_info = pos;
1078 elems->wmm_info_len = elen;
1079 } else if (pos[4] == 1) {
1080 elems->wmm_param = pos;
1081 elems->wmm_param_len = elen;
1088 elems->rsn_len = elen;
1090 case WLAN_EID_ERP_INFO:
1092 elems->erp_info = pos;
1094 elem_parse_failed = true;
1096 case WLAN_EID_EXT_SUPP_RATES:
1097 elems->ext_supp_rates = pos;
1098 elems->ext_supp_rates_len = elen;
1100 case WLAN_EID_HT_CAPABILITY:
1101 if (elen >= sizeof(struct ieee80211_ht_cap))
1102 elems->ht_cap_elem = (void *)pos;
1104 elem_parse_failed = true;
1106 case WLAN_EID_HT_OPERATION:
1107 if (elen >= sizeof(struct ieee80211_ht_operation))
1108 elems->ht_operation = (void *)pos;
1110 elem_parse_failed = true;
1112 case WLAN_EID_VHT_CAPABILITY:
1113 if (elen >= sizeof(struct ieee80211_vht_cap))
1114 elems->vht_cap_elem = (void *)pos;
1116 elem_parse_failed = true;
1118 case WLAN_EID_VHT_OPERATION:
1119 if (elen >= sizeof(struct ieee80211_vht_operation)) {
1120 elems->vht_operation = (void *)pos;
1122 crc = crc32_be(crc, pos - 2, elen + 2);
1125 elem_parse_failed = true;
1127 case WLAN_EID_OPMODE_NOTIF:
1129 elems->opmode_notif = pos;
1131 crc = crc32_be(crc, pos - 2, elen + 2);
1134 elem_parse_failed = true;
1136 case WLAN_EID_MESH_ID:
1137 elems->mesh_id = pos;
1138 elems->mesh_id_len = elen;
1140 case WLAN_EID_MESH_CONFIG:
1141 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1142 elems->mesh_config = (void *)pos;
1144 elem_parse_failed = true;
1146 case WLAN_EID_PEER_MGMT:
1147 elems->peering = pos;
1148 elems->peering_len = elen;
1150 case WLAN_EID_MESH_AWAKE_WINDOW:
1152 elems->awake_window = (void *)pos;
1156 elems->preq_len = elen;
1160 elems->prep_len = elen;
1164 elems->perr_len = elen;
1167 if (elen >= sizeof(struct ieee80211_rann_ie))
1168 elems->rann = (void *)pos;
1170 elem_parse_failed = true;
1172 case WLAN_EID_CHANNEL_SWITCH:
1173 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1174 elem_parse_failed = true;
1177 elems->ch_switch_ie = (void *)pos;
1179 case WLAN_EID_EXT_CHANSWITCH_ANN:
1180 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1181 elem_parse_failed = true;
1184 elems->ext_chansw_ie = (void *)pos;
1186 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1187 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1188 elem_parse_failed = true;
1191 elems->sec_chan_offs = (void *)pos;
1193 case WLAN_EID_CHAN_SWITCH_PARAM:
1195 sizeof(*elems->mesh_chansw_params_ie)) {
1196 elem_parse_failed = true;
1199 elems->mesh_chansw_params_ie = (void *)pos;
1201 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1203 elen != sizeof(*elems->wide_bw_chansw_ie)) {
1204 elem_parse_failed = true;
1207 elems->wide_bw_chansw_ie = (void *)pos;
1209 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1211 elem_parse_failed = true;
1215 * This is a bit tricky, but as we only care about
1216 * the wide bandwidth channel switch element, so
1217 * just parse it out manually.
1219 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1222 if (ie[1] == sizeof(*elems->wide_bw_chansw_ie))
1223 elems->wide_bw_chansw_ie =
1226 elem_parse_failed = true;
1229 case WLAN_EID_COUNTRY:
1230 elems->country_elem = pos;
1231 elems->country_elem_len = elen;
1233 case WLAN_EID_PWR_CONSTRAINT:
1235 elem_parse_failed = true;
1238 elems->pwr_constr_elem = pos;
1240 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1241 /* Lots of different options exist, but we only care
1242 * about the Dynamic Transmit Power Control element.
1243 * First check for the Cisco OUI, then for the DTPC
1247 elem_parse_failed = true;
1251 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1252 pos[2] != 0x96 || pos[3] != 0x00)
1256 elem_parse_failed = true;
1261 crc = crc32_be(crc, pos - 2, elen + 2);
1263 elems->cisco_dtpc_elem = pos;
1265 case WLAN_EID_ADDBA_EXT:
1266 if (elen != sizeof(struct ieee80211_addba_ext_ie)) {
1267 elem_parse_failed = true;
1270 elems->addba_ext_ie = (void *)pos;
1272 case WLAN_EID_TIMEOUT_INTERVAL:
1273 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1274 elems->timeout_int = (void *)pos;
1276 elem_parse_failed = true;
1278 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1279 if (elen >= sizeof(*elems->max_idle_period_ie))
1280 elems->max_idle_period_ie = (void *)pos;
1284 elems->rsnx_len = elen;
1286 case WLAN_EID_EXTENSION:
1287 ieee80211_parse_extension_element(calc_crc ?
1295 if (elem_parse_failed)
1296 elems->parse_error = true;
1298 __set_bit(id, seen_elems);
1301 if (!for_each_element_completed(elem, start, len))
1302 elems->parse_error = true;
1307 static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1308 struct ieee802_11_elems *elems,
1309 u8 *transmitter_bssid,
1311 u8 *nontransmitted_profile)
1313 const struct element *elem, *sub;
1314 size_t profile_len = 0;
1317 if (!bss_bssid || !transmitter_bssid)
1320 for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1321 if (elem->datalen < 2)
1324 for_each_element(sub, elem->data + 1, elem->datalen - 1) {
1325 u8 new_bssid[ETH_ALEN];
1328 if (sub->id != 0 || sub->datalen < 4) {
1329 /* not a valid BSS profile */
1333 if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1334 sub->data[1] != 2) {
1335 /* The first element of the
1336 * Nontransmitted BSSID Profile is not
1337 * the Nontransmitted BSSID Capability
1343 memset(nontransmitted_profile, 0, len);
1344 profile_len = cfg80211_merge_profile(start, len,
1347 nontransmitted_profile,
1350 /* found a Nontransmitted BSSID Profile */
1351 index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
1352 nontransmitted_profile,
1354 if (!index || index[1] < 1 || index[2] == 0) {
1355 /* Invalid MBSSID Index element */
1359 cfg80211_gen_new_bssid(transmitter_bssid,
1363 if (ether_addr_equal(new_bssid, bss_bssid)) {
1365 elems->bssid_index_len = index[1];
1366 elems->bssid_index = (void *)&index[2];
1372 return found ? profile_len : 0;
1375 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1376 struct ieee802_11_elems *elems,
1377 u64 filter, u32 crc, u8 *transmitter_bssid,
1380 const struct element *non_inherit = NULL;
1381 u8 *nontransmitted_profile;
1382 int nontransmitted_profile_len = 0;
1384 memset(elems, 0, sizeof(*elems));
1385 elems->ie_start = start;
1386 elems->total_len = len;
1388 nontransmitted_profile = kmalloc(len, GFP_ATOMIC);
1389 if (nontransmitted_profile) {
1390 nontransmitted_profile_len =
1391 ieee802_11_find_bssid_profile(start, len, elems,
1394 nontransmitted_profile);
1396 cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1397 nontransmitted_profile,
1398 nontransmitted_profile_len);
1401 crc = _ieee802_11_parse_elems_crc(start, len, action, elems, filter,
1404 /* Override with nontransmitted profile, if found */
1405 if (nontransmitted_profile_len)
1406 _ieee802_11_parse_elems_crc(nontransmitted_profile,
1407 nontransmitted_profile_len,
1408 action, elems, 0, 0, NULL);
1410 if (elems->tim && !elems->parse_error) {
1411 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1413 elems->dtim_period = tim_ie->dtim_period;
1414 elems->dtim_count = tim_ie->dtim_count;
1417 /* Override DTIM period and count if needed */
1418 if (elems->bssid_index &&
1419 elems->bssid_index_len >=
1420 offsetofend(struct ieee80211_bssid_index, dtim_period))
1421 elems->dtim_period = elems->bssid_index->dtim_period;
1423 if (elems->bssid_index &&
1424 elems->bssid_index_len >=
1425 offsetofend(struct ieee80211_bssid_index, dtim_count))
1426 elems->dtim_count = elems->bssid_index->dtim_count;
1428 kfree(nontransmitted_profile);
1433 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1434 struct ieee80211_tx_queue_params
1437 struct ieee80211_chanctx_conf *chanctx_conf;
1438 const struct ieee80211_reg_rule *rrule;
1439 const struct ieee80211_wmm_ac *wmm_ac;
1440 u16 center_freq = 0;
1442 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1443 sdata->vif.type != NL80211_IFTYPE_STATION)
1447 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1449 center_freq = chanctx_conf->def.chan->center_freq;
1456 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1458 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
1463 if (sdata->vif.type == NL80211_IFTYPE_AP)
1464 wmm_ac = &rrule->wmm_rule.ap[ac];
1466 wmm_ac = &rrule->wmm_rule.client[ac];
1467 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1468 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1469 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
1470 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
1474 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1475 bool bss_notify, bool enable_qos)
1477 struct ieee80211_local *local = sdata->local;
1478 struct ieee80211_tx_queue_params qparam;
1479 struct ieee80211_chanctx_conf *chanctx_conf;
1482 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
1485 if (!local->ops->conf_tx)
1488 if (local->hw.queues < IEEE80211_NUM_ACS)
1491 memset(&qparam, 0, sizeof(qparam));
1494 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1495 use_11b = (chanctx_conf &&
1496 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
1497 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
1500 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1502 /* Set defaults according to 802.11-2007 Table 7-37 */
1509 /* Confiure old 802.11b/g medium access rules. */
1510 qparam.cw_max = aCWmax;
1511 qparam.cw_min = aCWmin;
1515 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1516 /* Update if QoS is enabled. */
1519 case IEEE80211_AC_BK:
1520 qparam.cw_max = aCWmax;
1521 qparam.cw_min = aCWmin;
1528 /* never happens but let's not leave undefined */
1530 case IEEE80211_AC_BE:
1531 qparam.cw_max = aCWmax;
1532 qparam.cw_min = aCWmin;
1539 case IEEE80211_AC_VI:
1540 qparam.cw_max = aCWmin;
1541 qparam.cw_min = (aCWmin + 1) / 2 - 1;
1545 qparam.txop = 6016/32;
1547 qparam.txop = 3008/32;
1554 case IEEE80211_AC_VO:
1555 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1556 qparam.cw_min = (aCWmin + 1) / 4 - 1;
1560 qparam.txop = 3264/32;
1562 qparam.txop = 1504/32;
1567 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
1569 qparam.uapsd = false;
1571 sdata->tx_conf[ac] = qparam;
1572 drv_conf_tx(local, sdata, ac, &qparam);
1575 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1576 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1577 sdata->vif.type != NL80211_IFTYPE_NAN) {
1578 sdata->vif.bss_conf.qos = enable_qos;
1580 ieee80211_bss_info_change_notify(sdata,
1585 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1586 u16 transaction, u16 auth_alg, u16 status,
1587 const u8 *extra, size_t extra_len, const u8 *da,
1588 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1591 struct ieee80211_local *local = sdata->local;
1592 struct sk_buff *skb;
1593 struct ieee80211_mgmt *mgmt;
1596 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
1597 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1598 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
1602 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
1604 mgmt = skb_put_zero(skb, 24 + 6);
1605 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1606 IEEE80211_STYPE_AUTH);
1607 memcpy(mgmt->da, da, ETH_ALEN);
1608 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1609 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1610 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1611 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
1612 mgmt->u.auth.status_code = cpu_to_le16(status);
1614 skb_put_data(skb, extra, extra_len);
1616 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1617 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1618 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1622 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1624 ieee80211_tx_skb(sdata, skb);
1627 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1628 const u8 *da, const u8 *bssid,
1629 u16 stype, u16 reason,
1630 bool send_frame, u8 *frame_buf)
1632 struct ieee80211_local *local = sdata->local;
1633 struct sk_buff *skb;
1634 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1637 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1638 mgmt->duration = 0; /* initialize only */
1639 mgmt->seq_ctrl = 0; /* initialize only */
1640 memcpy(mgmt->da, da, ETH_ALEN);
1641 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1642 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1643 /* u.deauth.reason_code == u.disassoc.reason_code */
1644 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1647 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1648 IEEE80211_DEAUTH_FRAME_LEN);
1652 skb_reserve(skb, local->hw.extra_tx_headroom);
1655 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1657 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1658 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1659 IEEE80211_SKB_CB(skb)->flags |=
1660 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1662 ieee80211_tx_skb(sdata, skb);
1666 static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end)
1668 if ((end - pos) < 5)
1671 *pos++ = WLAN_EID_EXTENSION;
1672 *pos++ = 1 + sizeof(cap);
1673 *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA;
1674 memcpy(pos, &cap, sizeof(cap));
1679 static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
1680 u8 *buffer, size_t buffer_len,
1681 const u8 *ie, size_t ie_len,
1682 enum nl80211_band band,
1684 struct cfg80211_chan_def *chandef,
1685 size_t *offset, u32 flags)
1687 struct ieee80211_local *local = sdata->local;
1688 struct ieee80211_supported_band *sband;
1689 const struct ieee80211_sta_he_cap *he_cap;
1690 u8 *pos = buffer, *end = buffer + buffer_len;
1692 int supp_rates_len, i;
1698 bool have_80mhz = false;
1702 sband = local->hw.wiphy->bands[band];
1703 if (WARN_ON_ONCE(!sband))
1706 rate_flags = ieee80211_chandef_rate_flags(chandef);
1707 shift = ieee80211_chandef_get_shift(chandef);
1710 for (i = 0; i < sband->n_bitrates; i++) {
1711 if ((BIT(i) & rate_mask) == 0)
1712 continue; /* skip rate */
1713 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1716 rates[num_rates++] =
1717 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1721 supp_rates_len = min_t(int, num_rates, 8);
1723 if (end - pos < 2 + supp_rates_len)
1725 *pos++ = WLAN_EID_SUPP_RATES;
1726 *pos++ = supp_rates_len;
1727 memcpy(pos, rates, supp_rates_len);
1728 pos += supp_rates_len;
1730 /* insert "request information" if in custom IEs */
1732 static const u8 before_extrates[] = {
1734 WLAN_EID_SUPP_RATES,
1737 noffset = ieee80211_ie_split(ie, ie_len,
1739 ARRAY_SIZE(before_extrates),
1741 if (end - pos < noffset - *offset)
1743 memcpy(pos, ie + *offset, noffset - *offset);
1744 pos += noffset - *offset;
1748 ext_rates_len = num_rates - supp_rates_len;
1749 if (ext_rates_len > 0) {
1750 if (end - pos < 2 + ext_rates_len)
1752 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1753 *pos++ = ext_rates_len;
1754 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1755 pos += ext_rates_len;
1758 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
1761 *pos++ = WLAN_EID_DS_PARAMS;
1763 *pos++ = ieee80211_frequency_to_channel(
1764 chandef->chan->center_freq);
1767 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1770 /* insert custom IEs that go before HT */
1772 static const u8 before_ht[] = {
1774 * no need to list the ones split off already
1775 * (or generated here)
1778 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1780 noffset = ieee80211_ie_split(ie, ie_len,
1781 before_ht, ARRAY_SIZE(before_ht),
1783 if (end - pos < noffset - *offset)
1785 memcpy(pos, ie + *offset, noffset - *offset);
1786 pos += noffset - *offset;
1790 if (sband->ht_cap.ht_supported) {
1791 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1793 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1797 /* insert custom IEs that go before VHT */
1799 static const u8 before_vht[] = {
1801 * no need to list the ones split off already
1802 * (or generated here)
1804 WLAN_EID_BSS_COEX_2040,
1805 WLAN_EID_EXT_CAPABILITY,
1807 WLAN_EID_CHANNEL_USAGE,
1808 WLAN_EID_INTERWORKING,
1810 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
1812 noffset = ieee80211_ie_split(ie, ie_len,
1813 before_vht, ARRAY_SIZE(before_vht),
1815 if (end - pos < noffset - *offset)
1817 memcpy(pos, ie + *offset, noffset - *offset);
1818 pos += noffset - *offset;
1822 /* Check if any channel in this sband supports at least 80 MHz */
1823 for (i = 0; i < sband->n_channels; i++) {
1824 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1825 IEEE80211_CHAN_NO_80MHZ))
1832 if (sband->vht_cap.vht_supported && have_80mhz) {
1833 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1835 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1836 sband->vht_cap.cap);
1839 /* insert custom IEs that go before HE */
1841 static const u8 before_he[] = {
1843 * no need to list the ones split off before VHT
1846 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1848 /* TODO: add 11ah/11aj/11ak elements */
1850 noffset = ieee80211_ie_split(ie, ie_len,
1851 before_he, ARRAY_SIZE(before_he),
1853 if (end - pos < noffset - *offset)
1855 memcpy(pos, ie + *offset, noffset - *offset);
1856 pos += noffset - *offset;
1860 he_cap = ieee80211_get_he_sta_cap(sband);
1862 pos = ieee80211_ie_build_he_cap(pos, he_cap, end);
1866 if (sband->band == NL80211_BAND_6GHZ) {
1867 enum nl80211_iftype iftype =
1868 ieee80211_vif_type_p2p(&sdata->vif);
1869 __le16 cap = ieee80211_get_he_6ghz_capa(sband, iftype);
1871 pos = ieee80211_write_he_6ghz_cap(pos, cap, end);
1876 * If adding more here, adjust code in main.c
1877 * that calculates local->scan_ies_len.
1880 return pos - buffer;
1882 WARN_ONCE(1, "not enough space for preq IEs\n");
1884 return pos - buffer;
1887 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
1889 struct ieee80211_scan_ies *ie_desc,
1890 const u8 *ie, size_t ie_len,
1891 u8 bands_used, u32 *rate_masks,
1892 struct cfg80211_chan_def *chandef,
1895 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
1898 memset(ie_desc, 0, sizeof(*ie_desc));
1900 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1901 if (bands_used & BIT(i)) {
1902 pos += ieee80211_build_preq_ies_band(sdata,
1910 ie_desc->ies[i] = buffer + old_pos;
1911 ie_desc->len[i] = pos - old_pos;
1916 /* add any remaining custom IEs */
1918 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
1919 "not enough space for preq custom IEs\n"))
1921 memcpy(buffer + pos, ie + custom_ie_offset,
1922 ie_len - custom_ie_offset);
1923 ie_desc->common_ies = buffer + pos;
1924 ie_desc->common_ie_len = ie_len - custom_ie_offset;
1925 pos += ie_len - custom_ie_offset;
1931 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1932 const u8 *src, const u8 *dst,
1934 struct ieee80211_channel *chan,
1935 const u8 *ssid, size_t ssid_len,
1936 const u8 *ie, size_t ie_len,
1939 struct ieee80211_local *local = sdata->local;
1940 struct cfg80211_chan_def chandef;
1941 struct sk_buff *skb;
1942 struct ieee80211_mgmt *mgmt;
1944 u32 rate_masks[NUM_NL80211_BANDS] = {};
1945 struct ieee80211_scan_ies dummy_ie_desc;
1948 * Do not send DS Channel parameter for directed probe requests
1949 * in order to maximize the chance that we get a response. Some
1950 * badly-behaved APs don't respond when this parameter is included.
1952 chandef.width = sdata->vif.bss_conf.chandef.width;
1953 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
1954 chandef.chan = NULL;
1956 chandef.chan = chan;
1958 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
1963 rate_masks[chan->band] = ratemask;
1964 ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb),
1965 skb_tailroom(skb), &dummy_ie_desc,
1966 ie, ie_len, BIT(chan->band),
1967 rate_masks, &chandef, flags);
1968 skb_put(skb, ies_len);
1971 mgmt = (struct ieee80211_mgmt *) skb->data;
1972 memcpy(mgmt->da, dst, ETH_ALEN);
1973 memcpy(mgmt->bssid, dst, ETH_ALEN);
1976 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1981 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1982 struct ieee802_11_elems *elems,
1983 enum nl80211_band band, u32 *basic_rates)
1985 struct ieee80211_supported_band *sband;
1987 u32 supp_rates, rate_flags;
1990 sband = sdata->local->hw.wiphy->bands[band];
1991 if (WARN_ON(!sband))
1994 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
1995 shift = ieee80211_vif_get_shift(&sdata->vif);
1997 num_rates = sband->n_bitrates;
1999 for (i = 0; i < elems->supp_rates_len +
2000 elems->ext_supp_rates_len; i++) {
2004 if (i < elems->supp_rates_len)
2005 rate = elems->supp_rates[i];
2006 else if (elems->ext_supp_rates)
2007 rate = elems->ext_supp_rates
2008 [i - elems->supp_rates_len];
2009 own_rate = 5 * (rate & 0x7f);
2010 is_basic = !!(rate & 0x80);
2012 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2015 for (j = 0; j < num_rates; j++) {
2017 if ((rate_flags & sband->bitrates[j].flags)
2021 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
2024 if (brate == own_rate) {
2025 supp_rates |= BIT(j);
2026 if (basic_rates && is_basic)
2027 *basic_rates |= BIT(j);
2034 void ieee80211_stop_device(struct ieee80211_local *local)
2036 ieee80211_led_radio(local, false);
2037 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
2039 cancel_work_sync(&local->reconfig_filter);
2041 flush_workqueue(local->workqueue);
2045 static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
2048 /* It's possible that we don't handle the scan completion in
2049 * time during suspend, so if it's still marked as completed
2050 * here, queue the work and flush it to clean things up.
2051 * Instead of calling the worker function directly here, we
2052 * really queue it to avoid potential races with other flows
2053 * scheduling the same work.
2055 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2056 /* If coming from reconfiguration failure, abort the scan so
2057 * we don't attempt to continue a partial HW scan - which is
2058 * possible otherwise if (e.g.) the 2.4 GHz portion was the
2059 * completed scan, and a 5 GHz portion is still pending.
2062 set_bit(SCAN_ABORTED, &local->scanning);
2063 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2064 flush_delayed_work(&local->scan_work);
2068 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2070 struct ieee80211_sub_if_data *sdata;
2071 struct ieee80211_chanctx *ctx;
2074 * We get here if during resume the device can't be restarted properly.
2075 * We might also get here if this happens during HW reset, which is a
2076 * slightly different situation and we need to drop all connections in
2079 * Ask cfg80211 to turn off all interfaces, this will result in more
2080 * warnings but at least we'll then get into a clean stopped state.
2083 local->resuming = false;
2084 local->suspended = false;
2085 local->in_reconfig = false;
2087 ieee80211_flush_completed_scan(local, true);
2089 /* scheduled scan clearly can't be running any more, but tell
2090 * cfg80211 and clear local state
2092 ieee80211_sched_scan_end(local);
2094 list_for_each_entry(sdata, &local->interfaces, list)
2095 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2097 /* Mark channel contexts as not being in the driver any more to avoid
2098 * removing them from the driver during the shutdown process...
2100 mutex_lock(&local->chanctx_mtx);
2101 list_for_each_entry(ctx, &local->chanctx_list, list)
2102 ctx->driver_present = false;
2103 mutex_unlock(&local->chanctx_mtx);
2105 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
2108 static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2109 struct ieee80211_sub_if_data *sdata)
2111 struct ieee80211_chanctx_conf *conf;
2112 struct ieee80211_chanctx *ctx;
2114 if (!local->use_chanctx)
2117 mutex_lock(&local->chanctx_mtx);
2118 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2119 lockdep_is_held(&local->chanctx_mtx));
2121 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2122 drv_assign_vif_chanctx(local, sdata, ctx);
2124 mutex_unlock(&local->chanctx_mtx);
2127 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2129 struct ieee80211_local *local = sdata->local;
2130 struct sta_info *sta;
2133 mutex_lock(&local->sta_mtx);
2134 list_for_each_entry(sta, &local->sta_list, list) {
2135 enum ieee80211_sta_state state;
2137 if (!sta->uploaded || sta->sdata != sdata)
2140 for (state = IEEE80211_STA_NOTEXIST;
2141 state < sta->sta_state; state++)
2142 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2145 mutex_unlock(&local->sta_mtx);
2148 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2150 struct cfg80211_nan_func *func, **funcs;
2153 res = drv_start_nan(sdata->local, sdata,
2154 &sdata->u.nan.conf);
2158 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2164 /* Add all the functions:
2165 * This is a little bit ugly. We need to call a potentially sleeping
2166 * callback for each NAN function, so we can't hold the spinlock.
2168 spin_lock_bh(&sdata->u.nan.func_lock);
2170 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2173 spin_unlock_bh(&sdata->u.nan.func_lock);
2175 for (i = 0; funcs[i]; i++) {
2176 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2178 ieee80211_nan_func_terminated(&sdata->vif,
2179 funcs[i]->instance_id,
2180 NL80211_NAN_FUNC_TERM_REASON_ERROR,
2189 int ieee80211_reconfig(struct ieee80211_local *local)
2191 struct ieee80211_hw *hw = &local->hw;
2192 struct ieee80211_sub_if_data *sdata;
2193 struct ieee80211_chanctx *ctx;
2194 struct sta_info *sta;
2196 bool reconfig_due_to_wowlan = false;
2197 struct ieee80211_sub_if_data *sched_scan_sdata;
2198 struct cfg80211_sched_scan_request *sched_scan_req;
2199 bool sched_scan_stopped = false;
2200 bool suspended = local->suspended;
2202 /* nothing to do if HW shouldn't run */
2203 if (!local->open_count)
2208 local->resuming = true;
2210 if (local->wowlan) {
2212 * In the wowlan case, both mac80211 and the device
2213 * are functional when the resume op is called, so
2214 * clear local->suspended so the device could operate
2215 * normally (e.g. pass rx frames).
2217 local->suspended = false;
2218 res = drv_resume(local);
2219 local->wowlan = false;
2221 local->resuming = false;
2228 * res is 1, which means the driver requested
2229 * to go through a regular reset on wakeup.
2230 * restore local->suspended in this case.
2232 reconfig_due_to_wowlan = true;
2233 local->suspended = true;
2238 * In case of hw_restart during suspend (without wowlan),
2239 * cancel restart work, as we are reconfiguring the device
2241 * Note that restart_work is scheduled on a frozen workqueue,
2242 * so we can't deadlock in this case.
2244 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2245 cancel_work_sync(&local->restart_work);
2247 local->started = false;
2250 * Upon resume hardware can sometimes be goofy due to
2251 * various platform / driver / bus issues, so restarting
2252 * the device may at times not work immediately. Propagate
2255 res = drv_start(local);
2258 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2260 WARN(1, "Hardware became unavailable during restart.\n");
2261 ieee80211_handle_reconfig_failure(local);
2265 /* setup fragmentation threshold */
2266 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2268 /* setup RTS threshold */
2269 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2271 /* reset coverage class */
2272 drv_set_coverage_class(local, hw->wiphy->coverage_class);
2274 ieee80211_led_radio(local, true);
2275 ieee80211_mod_tpt_led_trig(local,
2276 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2278 /* add interfaces */
2279 sdata = rtnl_dereference(local->monitor_sdata);
2281 /* in HW restart it exists already */
2282 WARN_ON(local->resuming);
2283 res = drv_add_interface(local, sdata);
2285 RCU_INIT_POINTER(local->monitor_sdata, NULL);
2291 list_for_each_entry(sdata, &local->interfaces, list) {
2292 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2293 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2294 ieee80211_sdata_running(sdata)) {
2295 res = drv_add_interface(local, sdata);
2301 /* If adding any of the interfaces failed above, roll back and
2305 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2307 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2308 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2309 ieee80211_sdata_running(sdata))
2310 drv_remove_interface(local, sdata);
2311 ieee80211_handle_reconfig_failure(local);
2315 /* add channel contexts */
2316 if (local->use_chanctx) {
2317 mutex_lock(&local->chanctx_mtx);
2318 list_for_each_entry(ctx, &local->chanctx_list, list)
2319 if (ctx->replace_state !=
2320 IEEE80211_CHANCTX_REPLACES_OTHER)
2321 WARN_ON(drv_add_chanctx(local, ctx));
2322 mutex_unlock(&local->chanctx_mtx);
2324 sdata = rtnl_dereference(local->monitor_sdata);
2325 if (sdata && ieee80211_sdata_running(sdata))
2326 ieee80211_assign_chanctx(local, sdata);
2329 /* reconfigure hardware */
2330 ieee80211_hw_config(local, ~0);
2332 ieee80211_configure_filter(local);
2334 /* Finally also reconfigure all the BSS information */
2335 list_for_each_entry(sdata, &local->interfaces, list) {
2338 if (!ieee80211_sdata_running(sdata))
2341 ieee80211_assign_chanctx(local, sdata);
2343 switch (sdata->vif.type) {
2344 case NL80211_IFTYPE_AP_VLAN:
2345 case NL80211_IFTYPE_MONITOR:
2347 case NL80211_IFTYPE_ADHOC:
2348 if (sdata->vif.bss_conf.ibss_joined)
2349 WARN_ON(drv_join_ibss(local, sdata));
2352 ieee80211_reconfig_stations(sdata);
2354 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2355 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2356 drv_conf_tx(local, sdata, i,
2357 &sdata->tx_conf[i]);
2361 /* common change flags for all interface types */
2362 changed = BSS_CHANGED_ERP_CTS_PROT |
2363 BSS_CHANGED_ERP_PREAMBLE |
2364 BSS_CHANGED_ERP_SLOT |
2366 BSS_CHANGED_BASIC_RATES |
2367 BSS_CHANGED_BEACON_INT |
2372 BSS_CHANGED_TXPOWER |
2373 BSS_CHANGED_MCAST_RATE;
2375 if (sdata->vif.mu_mimo_owner)
2376 changed |= BSS_CHANGED_MU_GROUPS;
2378 switch (sdata->vif.type) {
2379 case NL80211_IFTYPE_STATION:
2380 changed |= BSS_CHANGED_ASSOC |
2381 BSS_CHANGED_ARP_FILTER |
2384 /* Re-send beacon info report to the driver */
2385 if (sdata->u.mgd.have_beacon)
2386 changed |= BSS_CHANGED_BEACON_INFO;
2388 if (sdata->vif.bss_conf.max_idle_period ||
2389 sdata->vif.bss_conf.protected_keep_alive)
2390 changed |= BSS_CHANGED_KEEP_ALIVE;
2393 ieee80211_bss_info_change_notify(sdata, changed);
2394 sdata_unlock(sdata);
2396 case NL80211_IFTYPE_OCB:
2397 changed |= BSS_CHANGED_OCB;
2398 ieee80211_bss_info_change_notify(sdata, changed);
2400 case NL80211_IFTYPE_ADHOC:
2401 changed |= BSS_CHANGED_IBSS;
2403 case NL80211_IFTYPE_AP:
2404 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
2406 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2407 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2408 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2409 changed |= BSS_CHANGED_FTM_RESPONDER;
2411 if (sdata->vif.type == NL80211_IFTYPE_AP) {
2412 changed |= BSS_CHANGED_AP_PROBE_RESP;
2414 if (rcu_access_pointer(sdata->u.ap.beacon))
2415 drv_start_ap(local, sdata);
2419 case NL80211_IFTYPE_MESH_POINT:
2420 if (sdata->vif.bss_conf.enable_beacon) {
2421 changed |= BSS_CHANGED_BEACON |
2422 BSS_CHANGED_BEACON_ENABLED;
2423 ieee80211_bss_info_change_notify(sdata, changed);
2426 case NL80211_IFTYPE_NAN:
2427 res = ieee80211_reconfig_nan(sdata);
2429 ieee80211_handle_reconfig_failure(local);
2433 case NL80211_IFTYPE_WDS:
2434 case NL80211_IFTYPE_AP_VLAN:
2435 case NL80211_IFTYPE_MONITOR:
2436 case NL80211_IFTYPE_P2P_DEVICE:
2439 case NL80211_IFTYPE_UNSPECIFIED:
2440 case NUM_NL80211_IFTYPES:
2441 case NL80211_IFTYPE_P2P_CLIENT:
2442 case NL80211_IFTYPE_P2P_GO:
2448 ieee80211_recalc_ps(local);
2451 * The sta might be in psm against the ap (e.g. because
2452 * this was the state before a hw restart), so we
2453 * explicitly send a null packet in order to make sure
2454 * it'll sync against the ap (and get out of psm).
2456 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2457 list_for_each_entry(sdata, &local->interfaces, list) {
2458 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2460 if (!sdata->u.mgd.associated)
2463 ieee80211_send_nullfunc(local, sdata, false);
2467 /* APs are now beaconing, add back stations */
2468 mutex_lock(&local->sta_mtx);
2469 list_for_each_entry(sta, &local->sta_list, list) {
2470 enum ieee80211_sta_state state;
2475 if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
2476 sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
2479 for (state = IEEE80211_STA_NOTEXIST;
2480 state < sta->sta_state; state++)
2481 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2484 mutex_unlock(&local->sta_mtx);
2487 list_for_each_entry(sdata, &local->interfaces, list)
2488 ieee80211_reenable_keys(sdata);
2490 /* Reconfigure sched scan if it was interrupted by FW restart */
2491 mutex_lock(&local->mtx);
2492 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2493 lockdep_is_held(&local->mtx));
2494 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2495 lockdep_is_held(&local->mtx));
2496 if (sched_scan_sdata && sched_scan_req)
2498 * Sched scan stopped, but we don't want to report it. Instead,
2499 * we're trying to reschedule. However, if more than one scan
2500 * plan was set, we cannot reschedule since we don't know which
2501 * scan plan was currently running (and some scan plans may have
2502 * already finished).
2504 if (sched_scan_req->n_scan_plans > 1 ||
2505 __ieee80211_request_sched_scan_start(sched_scan_sdata,
2507 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2508 RCU_INIT_POINTER(local->sched_scan_req, NULL);
2509 sched_scan_stopped = true;
2511 mutex_unlock(&local->mtx);
2513 if (sched_scan_stopped)
2514 cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy, 0);
2518 if (local->monitors == local->open_count && local->monitors > 0)
2519 ieee80211_add_virtual_monitor(local);
2522 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2523 * sessions can be established after a resume.
2525 * Also tear down aggregation sessions since reconfiguring
2526 * them in a hardware restart scenario is not easily done
2527 * right now, and the hardware will have lost information
2528 * about the sessions, but we and the AP still think they
2529 * are active. This is really a workaround though.
2531 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2532 mutex_lock(&local->sta_mtx);
2534 list_for_each_entry(sta, &local->sta_list, list) {
2535 if (!local->resuming)
2536 ieee80211_sta_tear_down_BA_sessions(
2537 sta, AGG_STOP_LOCAL_REQUEST);
2538 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
2541 mutex_unlock(&local->sta_mtx);
2544 if (local->in_reconfig) {
2545 local->in_reconfig = false;
2548 /* Restart deferred ROCs */
2549 mutex_lock(&local->mtx);
2550 ieee80211_start_next_roc(local);
2551 mutex_unlock(&local->mtx);
2553 /* Requeue all works */
2554 list_for_each_entry(sdata, &local->interfaces, list)
2555 ieee80211_queue_work(&local->hw, &sdata->work);
2558 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
2559 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2563 * If this is for hw restart things are still running.
2564 * We may want to change that later, however.
2566 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2567 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2573 /* first set suspended false, then resuming */
2574 local->suspended = false;
2576 local->resuming = false;
2578 ieee80211_flush_completed_scan(local, false);
2580 if (local->open_count && !reconfig_due_to_wowlan)
2581 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2583 list_for_each_entry(sdata, &local->interfaces, list) {
2584 if (!ieee80211_sdata_running(sdata))
2586 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2587 ieee80211_sta_restart(sdata);
2590 mod_timer(&local->sta_cleanup, jiffies + 1);
2598 void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2600 struct ieee80211_sub_if_data *sdata;
2601 struct ieee80211_local *local;
2602 struct ieee80211_key *key;
2607 sdata = vif_to_sdata(vif);
2608 local = sdata->local;
2610 if (WARN_ON(!local->resuming))
2613 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2616 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
2618 mutex_lock(&local->key_mtx);
2619 list_for_each_entry(key, &sdata->key_list, list)
2620 key->flags |= KEY_FLAG_TAINTED;
2621 mutex_unlock(&local->key_mtx);
2623 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2625 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
2627 struct ieee80211_local *local = sdata->local;
2628 struct ieee80211_chanctx_conf *chanctx_conf;
2629 struct ieee80211_chanctx *chanctx;
2631 mutex_lock(&local->chanctx_mtx);
2633 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2634 lockdep_is_held(&local->chanctx_mtx));
2637 * This function can be called from a work, thus it may be possible
2638 * that the chanctx_conf is removed (due to a disconnection, for
2640 * So nothing should be done in such case.
2645 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2646 ieee80211_recalc_smps_chanctx(local, chanctx);
2648 mutex_unlock(&local->chanctx_mtx);
2651 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2653 struct ieee80211_local *local = sdata->local;
2654 struct ieee80211_chanctx_conf *chanctx_conf;
2655 struct ieee80211_chanctx *chanctx;
2657 mutex_lock(&local->chanctx_mtx);
2659 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2660 lockdep_is_held(&local->chanctx_mtx));
2662 if (WARN_ON_ONCE(!chanctx_conf))
2665 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2666 ieee80211_recalc_chanctx_min_def(local, chanctx);
2668 mutex_unlock(&local->chanctx_mtx);
2671 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2673 size_t pos = offset;
2675 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2676 pos += 2 + ies[pos + 1];
2681 static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
2685 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
2687 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2691 * Scale up threshold values before storing it, as the RSSI averaging
2692 * algorithm uses a scaled up value as well. Change this scaling
2693 * factor if the RSSI averaging algorithm changes.
2695 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
2696 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
2699 void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
2703 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2705 WARN_ON(rssi_min_thold == rssi_max_thold ||
2706 rssi_min_thold > rssi_max_thold);
2708 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
2711 EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
2713 void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
2715 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2717 _ieee80211_enable_rssi_reports(sdata, 0, 0);
2719 EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
2721 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2726 *pos++ = WLAN_EID_HT_CAPABILITY;
2727 *pos++ = sizeof(struct ieee80211_ht_cap);
2728 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2730 /* capability flags */
2731 tmp = cpu_to_le16(cap);
2732 memcpy(pos, &tmp, sizeof(u16));
2735 /* AMPDU parameters */
2736 *pos++ = ht_cap->ampdu_factor |
2737 (ht_cap->ampdu_density <<
2738 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2741 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2742 pos += sizeof(ht_cap->mcs);
2744 /* extended capabilities */
2745 pos += sizeof(__le16);
2747 /* BF capabilities */
2748 pos += sizeof(__le32);
2750 /* antenna selection */
2756 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2761 *pos++ = WLAN_EID_VHT_CAPABILITY;
2762 *pos++ = sizeof(struct ieee80211_vht_cap);
2763 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
2765 /* capability flags */
2766 tmp = cpu_to_le32(cap);
2767 memcpy(pos, &tmp, sizeof(u32));
2771 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2772 pos += sizeof(vht_cap->vht_mcs);
2777 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
2779 const struct ieee80211_sta_he_cap *he_cap;
2780 struct ieee80211_supported_band *sband;
2783 sband = ieee80211_get_sband(sdata);
2787 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
2791 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2793 sizeof(he_cap->he_cap_elem) + n +
2794 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2795 he_cap->he_cap_elem.phy_cap_info);
2798 u8 *ieee80211_ie_build_he_cap(u8 *pos,
2799 const struct ieee80211_sta_he_cap *he_cap,
2806 /* Make sure we have place for the IE */
2808 * TODO: the 1 added is because this temporarily is under the EXTENSION
2809 * IE. Get rid of it when it moves.
2814 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2816 sizeof(he_cap->he_cap_elem) + n +
2817 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2818 he_cap->he_cap_elem.phy_cap_info);
2820 if ((end - pos) < ie_len)
2823 *pos++ = WLAN_EID_EXTENSION;
2824 pos++; /* We'll set the size later below */
2825 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
2828 memcpy(pos, &he_cap->he_cap_elem, sizeof(he_cap->he_cap_elem));
2829 pos += sizeof(he_cap->he_cap_elem);
2831 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
2834 /* Check if PPE Threshold should be present */
2835 if ((he_cap->he_cap_elem.phy_cap_info[6] &
2836 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2840 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
2841 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
2843 n = hweight8(he_cap->ppe_thres[0] &
2844 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
2845 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
2846 IEEE80211_PPE_THRES_NSS_POS));
2849 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
2852 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
2853 n = DIV_ROUND_UP(n, 8);
2855 /* Copy PPE Thresholds */
2856 memcpy(pos, &he_cap->ppe_thres, n);
2860 orig_pos[1] = (pos - orig_pos) - 2;
2864 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2865 struct sk_buff *skb)
2867 struct ieee80211_supported_band *sband;
2868 const struct ieee80211_sband_iftype_data *iftd;
2869 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
2873 sband = ieee80211_get_sband(sdata);
2877 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
2881 cap = le16_to_cpu(iftd->he_6ghz_capa.capa);
2882 cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS;
2884 switch (sdata->smps_mode) {
2885 case IEEE80211_SMPS_AUTOMATIC:
2886 case IEEE80211_SMPS_NUM_MODES:
2889 case IEEE80211_SMPS_OFF:
2890 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
2891 IEEE80211_HE_6GHZ_CAP_SM_PS);
2893 case IEEE80211_SMPS_STATIC:
2894 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
2895 IEEE80211_HE_6GHZ_CAP_SM_PS);
2897 case IEEE80211_SMPS_DYNAMIC:
2898 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
2899 IEEE80211_HE_6GHZ_CAP_SM_PS);
2903 pos = skb_put(skb, 2 + 1 + sizeof(cap));
2904 ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap),
2905 pos + 2 + 1 + sizeof(cap));
2908 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2909 const struct cfg80211_chan_def *chandef,
2910 u16 prot_mode, bool rifs_mode)
2912 struct ieee80211_ht_operation *ht_oper;
2913 /* Build HT Information */
2914 *pos++ = WLAN_EID_HT_OPERATION;
2915 *pos++ = sizeof(struct ieee80211_ht_operation);
2916 ht_oper = (struct ieee80211_ht_operation *)pos;
2917 ht_oper->primary_chan = ieee80211_frequency_to_channel(
2918 chandef->chan->center_freq);
2919 switch (chandef->width) {
2920 case NL80211_CHAN_WIDTH_160:
2921 case NL80211_CHAN_WIDTH_80P80:
2922 case NL80211_CHAN_WIDTH_80:
2923 case NL80211_CHAN_WIDTH_40:
2924 if (chandef->center_freq1 > chandef->chan->center_freq)
2925 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2927 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2930 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
2933 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
2934 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
2935 chandef->width != NL80211_CHAN_WIDTH_20)
2936 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
2939 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
2941 ht_oper->operation_mode = cpu_to_le16(prot_mode);
2942 ht_oper->stbc_param = 0x0000;
2944 /* It seems that Basic MCS set and Supported MCS set
2945 are identical for the first 10 bytes */
2946 memset(&ht_oper->basic_set, 0, 16);
2947 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
2949 return pos + sizeof(struct ieee80211_ht_operation);
2952 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2953 const struct cfg80211_chan_def *chandef)
2955 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
2956 *pos++ = 3; /* IE length */
2957 /* New channel width */
2958 switch (chandef->width) {
2959 case NL80211_CHAN_WIDTH_80:
2960 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
2962 case NL80211_CHAN_WIDTH_160:
2963 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
2965 case NL80211_CHAN_WIDTH_80P80:
2966 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
2969 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
2972 /* new center frequency segment 0 */
2973 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
2974 /* new center frequency segment 1 */
2975 if (chandef->center_freq2)
2976 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
2981 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2982 const struct cfg80211_chan_def *chandef)
2984 struct ieee80211_vht_operation *vht_oper;
2986 *pos++ = WLAN_EID_VHT_OPERATION;
2987 *pos++ = sizeof(struct ieee80211_vht_operation);
2988 vht_oper = (struct ieee80211_vht_operation *)pos;
2989 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
2990 chandef->center_freq1);
2991 if (chandef->center_freq2)
2992 vht_oper->center_freq_seg1_idx =
2993 ieee80211_frequency_to_channel(chandef->center_freq2);
2995 vht_oper->center_freq_seg1_idx = 0x00;
2997 switch (chandef->width) {
2998 case NL80211_CHAN_WIDTH_160:
3000 * Convert 160 MHz channel width to new style as interop
3003 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3004 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
3005 if (chandef->chan->center_freq < chandef->center_freq1)
3006 vht_oper->center_freq_seg0_idx -= 8;
3008 vht_oper->center_freq_seg0_idx += 8;
3010 case NL80211_CHAN_WIDTH_80P80:
3012 * Convert 80+80 MHz channel width to new style as interop
3015 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3017 case NL80211_CHAN_WIDTH_80:
3018 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3021 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
3025 /* don't require special VHT peer rates */
3026 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
3028 return pos + sizeof(struct ieee80211_vht_operation);
3031 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
3033 struct ieee80211_he_operation *he_oper;
3034 struct ieee80211_he_6ghz_oper *he_6ghz_op;
3036 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
3038 if (chandef->chan->band == NL80211_BAND_6GHZ)
3039 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
3041 *pos++ = WLAN_EID_EXTENSION;
3043 *pos++ = WLAN_EID_EXT_HE_OPERATION;
3046 he_oper_params |= u32_encode_bits(1023, /* disabled */
3047 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3048 he_oper_params |= u32_encode_bits(1,
3049 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
3050 he_oper_params |= u32_encode_bits(1,
3051 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3052 if (chandef->chan->band == NL80211_BAND_6GHZ)
3053 he_oper_params |= u32_encode_bits(1,
3054 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
3056 he_oper = (struct ieee80211_he_operation *)pos;
3057 he_oper->he_oper_params = cpu_to_le32(he_oper_params);
3059 /* don't require special HE peer rates */
3060 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
3061 pos += sizeof(struct ieee80211_he_operation);
3063 if (chandef->chan->band != NL80211_BAND_6GHZ)
3066 /* TODO add VHT operational */
3067 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
3068 he_6ghz_op->minrate = 6; /* 6 Mbps */
3069 he_6ghz_op->primary =
3070 ieee80211_frequency_to_channel(chandef->chan->center_freq);
3072 ieee80211_frequency_to_channel(chandef->center_freq1);
3073 if (chandef->center_freq2)
3075 ieee80211_frequency_to_channel(chandef->center_freq2);
3077 he_6ghz_op->ccfs1 = 0;
3079 switch (chandef->width) {
3080 case NL80211_CHAN_WIDTH_160:
3081 /* Convert 160 MHz channel width to new style as interop
3084 he_6ghz_op->control =
3085 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3086 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
3087 if (chandef->chan->center_freq < chandef->center_freq1)
3088 he_6ghz_op->ccfs0 -= 8;
3090 he_6ghz_op->ccfs0 += 8;
3092 case NL80211_CHAN_WIDTH_80P80:
3093 he_6ghz_op->control =
3094 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3096 case NL80211_CHAN_WIDTH_80:
3097 he_6ghz_op->control =
3098 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
3100 case NL80211_CHAN_WIDTH_40:
3101 he_6ghz_op->control =
3102 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
3105 he_6ghz_op->control =
3106 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
3110 pos += sizeof(struct ieee80211_he_6ghz_oper);
3116 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
3117 struct cfg80211_chan_def *chandef)
3119 enum nl80211_channel_type channel_type;
3124 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
3125 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3126 channel_type = NL80211_CHAN_HT20;
3128 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3129 channel_type = NL80211_CHAN_HT40PLUS;
3131 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3132 channel_type = NL80211_CHAN_HT40MINUS;
3135 channel_type = NL80211_CHAN_NO_HT;
3139 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
3143 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
3144 const struct ieee80211_vht_operation *oper,
3145 const struct ieee80211_ht_operation *htop,
3146 struct cfg80211_chan_def *chandef)
3148 struct cfg80211_chan_def new = *chandef;
3150 int ccfs0, ccfs1, ccfs2;
3153 bool support_80_80 = false;
3154 bool support_160 = false;
3155 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
3156 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
3157 u8 supp_chwidth = u32_get_bits(vht_cap_info,
3158 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
3163 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
3164 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
3165 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
3166 support_80_80 = ((vht_cap &
3167 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
3168 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
3169 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
3170 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
3171 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
3172 ccfs0 = oper->center_freq_seg0_idx;
3173 ccfs1 = oper->center_freq_seg1_idx;
3174 ccfs2 = (le16_to_cpu(htop->operation_mode) &
3175 IEEE80211_HT_OP_MODE_CCFS2_MASK)
3176 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
3180 /* if not supported, parse as though we didn't understand it */
3181 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3182 ext_nss_bw_supp = 0;
3185 * Cf. IEEE 802.11 Table 9-250
3187 * We really just consider that because it's inefficient to connect
3188 * at a higher bandwidth than we'll actually be able to use.
3190 switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
3194 support_160 = false;
3195 support_80_80 = false;
3198 support_80_80 = false;
3221 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3222 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
3224 switch (oper->chan_width) {
3225 case IEEE80211_VHT_CHANWIDTH_USE_HT:
3226 /* just use HT information directly */
3228 case IEEE80211_VHT_CHANWIDTH_80MHZ:
3229 new.width = NL80211_CHAN_WIDTH_80;
3230 new.center_freq1 = cf0;
3231 /* If needed, adjust based on the newer interop workaround. */
3235 diff = abs(ccf1 - ccf0);
3236 if ((diff == 8) && support_160) {
3237 new.width = NL80211_CHAN_WIDTH_160;
3238 new.center_freq1 = cf1;
3239 } else if ((diff > 8) && support_80_80) {
3240 new.width = NL80211_CHAN_WIDTH_80P80;
3241 new.center_freq2 = cf1;
3245 case IEEE80211_VHT_CHANWIDTH_160MHZ:
3246 /* deprecated encoding */
3247 new.width = NL80211_CHAN_WIDTH_160;
3248 new.center_freq1 = cf0;
3250 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3251 /* deprecated encoding */
3252 new.width = NL80211_CHAN_WIDTH_80P80;
3253 new.center_freq1 = cf0;
3254 new.center_freq2 = cf1;
3260 if (!cfg80211_chandef_valid(&new))
3267 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
3268 const struct ieee80211_he_operation *he_oper,
3269 struct cfg80211_chan_def *chandef)
3271 struct ieee80211_local *local = sdata->local;
3272 struct ieee80211_supported_band *sband;
3273 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3274 const struct ieee80211_sta_he_cap *he_cap;
3275 struct cfg80211_chan_def he_chandef = *chandef;
3276 const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3277 bool support_80_80, support_160;
3281 if (chandef->chan->band != NL80211_BAND_6GHZ)
3284 sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3286 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3288 sdata_info(sdata, "Missing iftype sband data/HE cap");
3292 he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
3295 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3298 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3302 "HE is not advertised on (on %d MHz), expect issues\n",
3303 chandef->chan->center_freq);
3307 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3309 if (!he_6ghz_oper) {
3311 "HE 6GHz operation missing (on %d MHz), expect issues\n",
3312 chandef->chan->center_freq);
3316 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3318 he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
3320 switch (u8_get_bits(he_6ghz_oper->control,
3321 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3322 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3323 he_chandef.width = NL80211_CHAN_WIDTH_20;
3325 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3326 he_chandef.width = NL80211_CHAN_WIDTH_40;
3328 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3329 he_chandef.width = NL80211_CHAN_WIDTH_80;
3331 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3332 he_chandef.width = NL80211_CHAN_WIDTH_80;
3333 if (!he_6ghz_oper->ccfs1)
3335 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) {
3337 he_chandef.width = NL80211_CHAN_WIDTH_160;
3340 he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3345 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3346 he_chandef.center_freq1 =
3347 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3350 he_chandef.center_freq1 =
3351 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3353 he_chandef.center_freq2 =
3354 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3358 if (!cfg80211_chandef_valid(&he_chandef)) {
3360 "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n",
3361 he_chandef.chan ? he_chandef.chan->center_freq : 0,
3363 he_chandef.center_freq1,
3364 he_chandef.center_freq2);
3368 *chandef = he_chandef;
3373 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
3374 const struct ieee80211_supported_band *sband,
3375 const u8 *srates, int srates_len, u32 *rates)
3377 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
3378 int shift = ieee80211_chandef_get_shift(chandef);
3379 struct ieee80211_rate *br;
3380 int brate, rate, i, j, count = 0;
3384 for (i = 0; i < srates_len; i++) {
3385 rate = srates[i] & 0x7f;
3387 for (j = 0; j < sband->n_bitrates; j++) {
3388 br = &sband->bitrates[j];
3389 if ((rate_flags & br->flags) != rate_flags)
3392 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3393 if (brate == rate) {
3403 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
3404 struct sk_buff *skb, bool need_basic,
3405 enum nl80211_band band)
3407 struct ieee80211_local *local = sdata->local;
3408 struct ieee80211_supported_band *sband;
3411 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3414 shift = ieee80211_vif_get_shift(&sdata->vif);
3415 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3416 sband = local->hw.wiphy->bands[band];
3418 for (i = 0; i < sband->n_bitrates; i++) {
3419 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3426 if (skb_tailroom(skb) < rates + 2)
3429 pos = skb_put(skb, rates + 2);
3430 *pos++ = WLAN_EID_SUPP_RATES;
3432 for (i = 0; i < rates; i++) {
3434 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3437 if (need_basic && basic_rates & BIT(i))
3439 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3441 *pos++ = basic | (u8) rate;
3447 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
3448 struct sk_buff *skb, bool need_basic,
3449 enum nl80211_band band)
3451 struct ieee80211_local *local = sdata->local;
3452 struct ieee80211_supported_band *sband;
3454 u8 i, exrates, *pos;
3455 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3458 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3459 shift = ieee80211_vif_get_shift(&sdata->vif);
3461 sband = local->hw.wiphy->bands[band];
3463 for (i = 0; i < sband->n_bitrates; i++) {
3464 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3474 if (skb_tailroom(skb) < exrates + 2)
3478 pos = skb_put(skb, exrates + 2);
3479 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3481 for (i = 8; i < sband->n_bitrates; i++) {
3483 if ((rate_flags & sband->bitrates[i].flags)
3486 if (need_basic && basic_rates & BIT(i))
3488 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3490 *pos++ = basic | (u8) rate;
3496 int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3498 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3499 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3501 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
3502 /* non-managed type inferfaces */
3505 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3507 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
3509 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3514 /* TODO: consider rx_highest */
3516 if (mcs->rx_mask[3])
3518 if (mcs->rx_mask[2])
3520 if (mcs->rx_mask[1])
3526 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3527 * @local: mac80211 hw info struct
3528 * @status: RX status
3529 * @mpdu_len: total MPDU length (including FCS)
3530 * @mpdu_offset: offset into MPDU to calculate timestamp at
3532 * This function calculates the RX timestamp at the given MPDU offset, taking
3533 * into account what the RX timestamp was. An offset of 0 will just normalize
3534 * the timestamp to TSF at beginning of MPDU reception.
3536 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3537 struct ieee80211_rx_status *status,
3538 unsigned int mpdu_len,
3539 unsigned int mpdu_offset)
3541 u64 ts = status->mactime;
3542 struct rate_info ri;
3545 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3548 memset(&ri, 0, sizeof(ri));
3552 /* Fill cfg80211 rate info */
3553 switch (status->encoding) {
3555 ri.mcs = status->rate_idx;
3556 ri.flags |= RATE_INFO_FLAGS_MCS;
3557 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3558 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3561 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3562 ri.mcs = status->rate_idx;
3563 ri.nss = status->nss;
3564 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3565 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3570 case RX_ENC_LEGACY: {
3571 struct ieee80211_supported_band *sband;
3575 switch (status->bw) {
3576 case RATE_INFO_BW_10:
3579 case RATE_INFO_BW_5:
3584 sband = local->hw.wiphy->bands[status->band];
3585 bitrate = sband->bitrates[status->rate_idx].bitrate;
3586 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
3588 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3589 /* TODO: handle HT/VHT preambles */
3590 if (status->band == NL80211_BAND_5GHZ) {
3593 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
3603 rate = cfg80211_calculate_bitrate(&ri);
3604 if (WARN_ONCE(!rate,
3605 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
3606 (unsigned long long)status->flag, status->rate_idx,
3610 /* rewind from end of MPDU */
3611 if (status->flag & RX_FLAG_MACTIME_END)
3612 ts -= mpdu_len * 8 * 10 / rate;
3614 ts += mpdu_offset * 8 * 10 / rate;
3619 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
3621 struct ieee80211_sub_if_data *sdata;
3622 struct cfg80211_chan_def chandef;
3624 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
3627 mutex_lock(&local->mtx);
3628 list_for_each_entry(sdata, &local->interfaces, list) {
3629 /* it might be waiting for the local->mtx, but then
3630 * by the time it gets it, sdata->wdev.cac_started
3631 * will no longer be true
3633 cancel_delayed_work(&sdata->dfs_cac_timer_work);
3635 if (sdata->wdev.cac_started) {
3636 chandef = sdata->vif.bss_conf.chandef;
3637 ieee80211_vif_release_channel(sdata);
3638 cfg80211_cac_event(sdata->dev,
3640 NL80211_RADAR_CAC_ABORTED,
3644 mutex_unlock(&local->mtx);
3647 void ieee80211_dfs_radar_detected_work(struct work_struct *work)
3649 struct ieee80211_local *local =
3650 container_of(work, struct ieee80211_local, radar_detected_work);
3651 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
3652 struct ieee80211_chanctx *ctx;
3653 int num_chanctx = 0;
3655 mutex_lock(&local->chanctx_mtx);
3656 list_for_each_entry(ctx, &local->chanctx_list, list) {
3657 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
3661 chandef = ctx->conf.def;
3663 mutex_unlock(&local->chanctx_mtx);
3666 ieee80211_dfs_cac_cancel(local);
3669 if (num_chanctx > 1)
3670 /* XXX: multi-channel is not supported yet */
3673 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
3676 void ieee80211_radar_detected(struct ieee80211_hw *hw)
3678 struct ieee80211_local *local = hw_to_local(hw);
3680 trace_api_radar_detected(local);
3682 schedule_work(&local->radar_detected_work);
3684 EXPORT_SYMBOL(ieee80211_radar_detected);
3686 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
3692 case NL80211_CHAN_WIDTH_20:
3693 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3694 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3696 case NL80211_CHAN_WIDTH_40:
3697 c->width = NL80211_CHAN_WIDTH_20;
3698 c->center_freq1 = c->chan->center_freq;
3699 ret = IEEE80211_STA_DISABLE_40MHZ |
3700 IEEE80211_STA_DISABLE_VHT;
3702 case NL80211_CHAN_WIDTH_80:
3703 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
3707 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
3708 c->width = NL80211_CHAN_WIDTH_40;
3709 ret = IEEE80211_STA_DISABLE_VHT;
3711 case NL80211_CHAN_WIDTH_80P80:
3712 c->center_freq2 = 0;
3713 c->width = NL80211_CHAN_WIDTH_80;
3714 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3715 IEEE80211_STA_DISABLE_160MHZ;
3717 case NL80211_CHAN_WIDTH_160:
3719 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
3722 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
3723 c->width = NL80211_CHAN_WIDTH_80;
3724 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3725 IEEE80211_STA_DISABLE_160MHZ;
3728 case NL80211_CHAN_WIDTH_20_NOHT:
3730 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3731 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3733 case NL80211_CHAN_WIDTH_5:
3734 case NL80211_CHAN_WIDTH_10:
3737 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3741 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
3747 * Returns true if smps_mode_new is strictly more restrictive than
3750 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
3751 enum ieee80211_smps_mode smps_mode_new)
3753 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
3754 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
3757 switch (smps_mode_old) {
3758 case IEEE80211_SMPS_STATIC:
3760 case IEEE80211_SMPS_DYNAMIC:
3761 return smps_mode_new == IEEE80211_SMPS_STATIC;
3762 case IEEE80211_SMPS_OFF:
3763 return smps_mode_new != IEEE80211_SMPS_OFF;
3771 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
3772 struct cfg80211_csa_settings *csa_settings)
3774 struct sk_buff *skb;
3775 struct ieee80211_mgmt *mgmt;
3776 struct ieee80211_local *local = sdata->local;
3778 int hdr_len = offsetofend(struct ieee80211_mgmt,
3779 u.action.u.chan_switch);
3782 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3783 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
3786 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
3787 5 + /* channel switch announcement element */
3788 3 + /* secondary channel offset element */
3789 5 + /* wide bandwidth channel switch announcement */
3790 8); /* mesh channel switch parameters element */
3794 skb_reserve(skb, local->tx_headroom);
3795 mgmt = skb_put_zero(skb, hdr_len);
3796 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3797 IEEE80211_STYPE_ACTION);
3799 eth_broadcast_addr(mgmt->da);
3800 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3801 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3802 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
3804 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
3805 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
3807 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
3808 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
3809 pos = skb_put(skb, 5);
3810 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
3811 *pos++ = 3; /* IE length */
3812 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
3813 freq = csa_settings->chandef.chan->center_freq;
3814 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
3815 *pos++ = csa_settings->count; /* count */
3817 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
3818 enum nl80211_channel_type ch_type;
3821 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
3822 *pos++ = 1; /* IE length */
3823 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
3824 if (ch_type == NL80211_CHAN_HT40PLUS)
3825 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3827 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3830 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3831 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3834 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
3835 *pos++ = 6; /* IE length */
3836 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
3837 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
3838 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
3839 *pos++ |= csa_settings->block_tx ?
3840 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
3841 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
3843 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
3847 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
3848 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
3849 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
3851 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
3854 ieee80211_tx_skb(sdata, skb);
3858 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
3860 return !(cs == NULL || cs->cipher == 0 ||
3861 cs->hdr_len < cs->pn_len + cs->pn_off ||
3862 cs->hdr_len <= cs->key_idx_off ||
3863 cs->key_idx_shift > 7 ||
3864 cs->key_idx_mask == 0);
3867 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
3871 /* Ensure we have enough iftype bitmap space for all iftype values */
3872 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
3874 for (i = 0; i < n; i++)
3875 if (!ieee80211_cs_valid(&cs[i]))
3881 const struct ieee80211_cipher_scheme *
3882 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
3883 enum nl80211_iftype iftype)
3885 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
3886 int n = local->hw.n_cipher_schemes;
3888 const struct ieee80211_cipher_scheme *cs = NULL;
3890 for (i = 0; i < n; i++) {
3891 if (l[i].cipher == cipher) {
3897 if (!cs || !(cs->iftype & BIT(iftype)))
3903 int ieee80211_cs_headroom(struct ieee80211_local *local,
3904 struct cfg80211_crypto_settings *crypto,
3905 enum nl80211_iftype iftype)
3907 const struct ieee80211_cipher_scheme *cs;
3908 int headroom = IEEE80211_ENCRYPT_HEADROOM;
3911 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
3912 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
3915 if (cs && headroom < cs->hdr_len)
3916 headroom = cs->hdr_len;
3919 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
3920 if (cs && headroom < cs->hdr_len)
3921 headroom = cs->hdr_len;
3927 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
3929 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
3936 if (data->count[i] == 1)
3939 if (data->desc[i].interval == 0)
3942 /* End time is in the past, check for repetitions */
3943 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
3944 if (data->count[i] < 255) {
3945 if (data->count[i] <= skip) {
3950 data->count[i] -= skip;
3953 data->desc[i].start += skip * data->desc[i].interval;
3959 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
3965 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3968 if (!data->count[i])
3971 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
3974 cur = data->desc[i].start - tsf;
3978 cur = data->desc[i].start + data->desc[i].duration - tsf;
3987 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
3992 * arbitrary limit, used to avoid infinite loops when combined NoA
3993 * descriptors cover the full time period.
3997 ieee80211_extend_absent_time(data, tsf, &offset);
3999 if (!ieee80211_extend_absent_time(data, tsf, &offset))
4003 } while (tries < max_tries);
4008 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
4010 u32 next_offset = BIT(31) - 1;
4014 data->has_next_tsf = false;
4015 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4018 if (!data->count[i])
4021 ieee80211_extend_noa_desc(data, tsf, i);
4022 start = data->desc[i].start - tsf;
4024 data->absent |= BIT(i);
4026 if (next_offset > start)
4027 next_offset = start;
4029 data->has_next_tsf = true;
4033 next_offset = ieee80211_get_noa_absent_time(data, tsf);
4035 data->next_tsf = tsf + next_offset;
4037 EXPORT_SYMBOL(ieee80211_update_p2p_noa);
4039 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
4040 struct ieee80211_noa_data *data, u32 tsf)
4045 memset(data, 0, sizeof(*data));
4047 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4048 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
4050 if (!desc->count || !desc->duration)
4053 data->count[i] = desc->count;
4054 data->desc[i].start = le32_to_cpu(desc->start_time);
4055 data->desc[i].duration = le32_to_cpu(desc->duration);
4056 data->desc[i].interval = le32_to_cpu(desc->interval);
4058 if (data->count[i] > 1 &&
4059 data->desc[i].interval < data->desc[i].duration)
4062 ieee80211_extend_noa_desc(data, tsf, i);
4067 ieee80211_update_p2p_noa(data, tsf);
4071 EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
4073 void ieee80211_recalc_dtim(struct ieee80211_local *local,
4074 struct ieee80211_sub_if_data *sdata)
4076 u64 tsf = drv_get_tsf(local, sdata);
4078 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
4079 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
4083 if (tsf == -1ULL || !beacon_int || !dtim_period)
4086 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4087 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
4091 ps = &sdata->bss->ps;
4092 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
4093 ps = &sdata->u.mesh.ps;
4099 * actually finds last dtim_count, mac80211 will update in
4100 * __beacon_add_tim().
4101 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
4103 do_div(tsf, beacon_int);
4104 bcns_from_dtim = do_div(tsf, dtim_period);
4105 /* just had a DTIM */
4106 if (!bcns_from_dtim)
4109 dtim_count = dtim_period - bcns_from_dtim;
4111 ps->dtim_count = dtim_count;
4114 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
4115 struct ieee80211_chanctx *ctx)
4117 struct ieee80211_sub_if_data *sdata;
4118 u8 radar_detect = 0;
4120 lockdep_assert_held(&local->chanctx_mtx);
4122 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
4125 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
4126 if (sdata->reserved_radar_required)
4127 radar_detect |= BIT(sdata->reserved_chandef.width);
4130 * An in-place reservation context should not have any assigned vifs
4131 * until it replaces the other context.
4133 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
4134 !list_empty(&ctx->assigned_vifs));
4136 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
4137 if (sdata->radar_required)
4138 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
4140 return radar_detect;
4143 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4144 const struct cfg80211_chan_def *chandef,
4145 enum ieee80211_chanctx_mode chanmode,
4148 struct ieee80211_local *local = sdata->local;
4149 struct ieee80211_sub_if_data *sdata_iter;
4150 enum nl80211_iftype iftype = sdata->wdev.iftype;
4151 struct ieee80211_chanctx *ctx;
4153 struct iface_combination_params params = {
4154 .radar_detect = radar_detect,
4157 lockdep_assert_held(&local->chanctx_mtx);
4159 if (WARN_ON(hweight32(radar_detect) > 1))
4162 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4166 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4169 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4170 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4172 * always passing this is harmless, since it'll be the
4173 * same value that cfg80211 finds if it finds the same
4174 * interface ... and that's always allowed
4176 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4179 /* Always allow software iftypes */
4180 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
4187 params.num_different_channels = 1;
4189 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
4190 params.iftype_num[iftype] = 1;
4192 list_for_each_entry(ctx, &local->chanctx_list, list) {
4193 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4195 params.radar_detect |=
4196 ieee80211_chanctx_radar_detect(local, ctx);
4197 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
4198 params.num_different_channels++;
4201 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4202 cfg80211_chandef_compatible(chandef,
4205 params.num_different_channels++;
4208 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4209 struct wireless_dev *wdev_iter;
4211 wdev_iter = &sdata_iter->wdev;
4213 if (sdata_iter == sdata ||
4214 !ieee80211_sdata_running(sdata_iter) ||
4215 cfg80211_iftype_allowed(local->hw.wiphy,
4216 wdev_iter->iftype, 0, 1))
4219 params.iftype_num[wdev_iter->iftype]++;
4223 if (total == 1 && !params.radar_detect)
4226 return cfg80211_check_combinations(local->hw.wiphy, ¶ms);
4230 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4233 u32 *max_num_different_channels = data;
4235 *max_num_different_channels = max(*max_num_different_channels,
4236 c->num_different_channels);
4239 int ieee80211_max_num_channels(struct ieee80211_local *local)
4241 struct ieee80211_sub_if_data *sdata;
4242 struct ieee80211_chanctx *ctx;
4243 u32 max_num_different_channels = 1;
4245 struct iface_combination_params params = {0};
4247 lockdep_assert_held(&local->chanctx_mtx);
4249 list_for_each_entry(ctx, &local->chanctx_list, list) {
4250 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4253 params.num_different_channels++;
4255 params.radar_detect |=
4256 ieee80211_chanctx_radar_detect(local, ctx);
4259 list_for_each_entry_rcu(sdata, &local->interfaces, list)
4260 params.iftype_num[sdata->wdev.iftype]++;
4262 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms,
4263 ieee80211_iter_max_chans,
4264 &max_num_different_channels);
4268 return max_num_different_channels;
4271 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4273 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4274 *buf++ = 7; /* len */
4275 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4278 *buf++ = 2; /* WME */
4279 *buf++ = 0; /* WME info */
4280 *buf++ = 1; /* WME ver */
4281 *buf++ = qosinfo; /* U-APSD no in use */
4286 void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4287 unsigned long *frame_cnt,
4288 unsigned long *byte_cnt)
4290 struct txq_info *txqi = to_txq_info(txq);
4291 u32 frag_cnt = 0, frag_bytes = 0;
4292 struct sk_buff *skb;
4294 skb_queue_walk(&txqi->frags, skb) {
4296 frag_bytes += skb->len;
4300 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
4303 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
4305 EXPORT_SYMBOL(ieee80211_txq_get_depth);
4307 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4308 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4309 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4310 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4311 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK