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) 2018-2021 Intel Corporation
11 * utilities for mac80211
14 #include <net/mac80211.h>
15 #include <linux/netdevice.h>
16 #include <linux/export.h>
17 #include <linux/types.h>
18 #include <linux/slab.h>
19 #include <linux/skbuff.h>
20 #include <linux/etherdevice.h>
21 #include <linux/if_arp.h>
22 #include <linux/bitmap.h>
23 #include <linux/crc32.h>
24 #include <net/net_namespace.h>
25 #include <net/cfg80211.h>
26 #include <net/rtnetlink.h>
28 #include "ieee80211_i.h"
29 #include "driver-ops.h"
36 /* privid for wiphys to determine whether they belong to us or not */
37 const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
39 struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
41 struct ieee80211_local *local;
43 local = wiphy_priv(wiphy);
46 EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
48 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
49 enum nl80211_iftype type)
51 __le16 fc = hdr->frame_control;
53 if (ieee80211_is_data(fc)) {
54 if (len < 24) /* drop incorrect hdr len (data) */
57 if (ieee80211_has_a4(fc))
59 if (ieee80211_has_tods(fc))
61 if (ieee80211_has_fromds(fc))
67 if (ieee80211_is_s1g_beacon(fc)) {
68 struct ieee80211_ext *ext = (void *) hdr;
70 return ext->u.s1g_beacon.sa;
73 if (ieee80211_is_mgmt(fc)) {
74 if (len < 24) /* drop incorrect hdr len (mgmt) */
79 if (ieee80211_is_ctl(fc)) {
80 if (ieee80211_is_pspoll(fc))
83 if (ieee80211_is_back_req(fc)) {
85 case NL80211_IFTYPE_STATION:
87 case NL80211_IFTYPE_AP:
88 case NL80211_IFTYPE_AP_VLAN:
91 break; /* fall through to the return */
98 EXPORT_SYMBOL(ieee80211_get_bssid);
100 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
103 struct ieee80211_hdr *hdr;
105 skb_queue_walk(&tx->skbs, skb) {
106 hdr = (struct ieee80211_hdr *) skb->data;
107 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
111 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
112 int rate, int erp, int short_preamble,
117 /* calculate duration (in microseconds, rounded up to next higher
118 * integer if it includes a fractional microsecond) to send frame of
119 * len bytes (does not include FCS) at the given rate. Duration will
122 * rate is in 100 kbps, so divident is multiplied by 10 in the
123 * DIV_ROUND_UP() operations.
125 * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
126 * is assumed to be 0 otherwise.
129 if (band == NL80211_BAND_5GHZ || erp) {
133 * N_DBPS = DATARATE x 4
134 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
135 * (16 = SIGNAL time, 6 = tail bits)
136 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
139 * 802.11a - 18.5.2: aSIFSTime = 16 usec
140 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
141 * signal ext = 6 usec
143 dur = 16; /* SIFS + signal ext */
144 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
145 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
147 /* IEEE 802.11-2012 18.3.2.4: all values above are:
148 * * times 4 for 5 MHz
149 * * times 2 for 10 MHz
153 /* rates should already consider the channel bandwidth,
154 * don't apply divisor again.
156 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
157 4 * rate); /* T_SYM x N_SYM */
160 * 802.11b or 802.11g with 802.11b compatibility:
161 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
162 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
164 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
165 * aSIFSTime = 10 usec
166 * aPreambleLength = 144 usec or 72 usec with short preamble
167 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
169 dur = 10; /* aSIFSTime = 10 usec */
170 dur += short_preamble ? (72 + 24) : (144 + 48);
172 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
178 /* Exported duration function for driver use */
179 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
180 struct ieee80211_vif *vif,
181 enum nl80211_band band,
183 struct ieee80211_rate *rate)
185 struct ieee80211_sub_if_data *sdata;
188 bool short_preamble = false;
192 sdata = vif_to_sdata(vif);
193 short_preamble = sdata->vif.bss_conf.use_short_preamble;
194 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
195 erp = rate->flags & IEEE80211_RATE_ERP_G;
196 shift = ieee80211_vif_get_shift(vif);
199 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
200 short_preamble, shift);
202 return cpu_to_le16(dur);
204 EXPORT_SYMBOL(ieee80211_generic_frame_duration);
206 __le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
207 struct ieee80211_vif *vif, size_t frame_len,
208 const struct ieee80211_tx_info *frame_txctl)
210 struct ieee80211_local *local = hw_to_local(hw);
211 struct ieee80211_rate *rate;
212 struct ieee80211_sub_if_data *sdata;
214 int erp, shift = 0, bitrate;
216 struct ieee80211_supported_band *sband;
218 sband = local->hw.wiphy->bands[frame_txctl->band];
220 short_preamble = false;
222 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
226 sdata = vif_to_sdata(vif);
227 short_preamble = sdata->vif.bss_conf.use_short_preamble;
228 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
229 erp = rate->flags & IEEE80211_RATE_ERP_G;
230 shift = ieee80211_vif_get_shift(vif);
233 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
236 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
237 erp, short_preamble, shift);
238 /* Data frame duration */
239 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
240 erp, short_preamble, shift);
242 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
243 erp, short_preamble, shift);
245 return cpu_to_le16(dur);
247 EXPORT_SYMBOL(ieee80211_rts_duration);
249 __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
250 struct ieee80211_vif *vif,
252 const struct ieee80211_tx_info *frame_txctl)
254 struct ieee80211_local *local = hw_to_local(hw);
255 struct ieee80211_rate *rate;
256 struct ieee80211_sub_if_data *sdata;
258 int erp, shift = 0, bitrate;
260 struct ieee80211_supported_band *sband;
262 sband = local->hw.wiphy->bands[frame_txctl->band];
264 short_preamble = false;
266 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
269 sdata = vif_to_sdata(vif);
270 short_preamble = sdata->vif.bss_conf.use_short_preamble;
271 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
272 erp = rate->flags & IEEE80211_RATE_ERP_G;
273 shift = ieee80211_vif_get_shift(vif);
276 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
278 /* Data frame duration */
279 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
280 erp, short_preamble, shift);
281 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
283 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
284 erp, short_preamble, shift);
287 return cpu_to_le16(dur);
289 EXPORT_SYMBOL(ieee80211_ctstoself_duration);
291 static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
293 struct ieee80211_local *local = sdata->local;
294 struct ieee80211_vif *vif = &sdata->vif;
295 struct fq *fq = &local->fq;
296 struct ps_data *ps = NULL;
297 struct txq_info *txqi;
298 struct sta_info *sta;
302 spin_lock(&fq->lock);
304 if (sdata->vif.type == NL80211_IFTYPE_AP)
305 ps = &sdata->bss->ps;
307 sdata->vif.txqs_stopped[ac] = false;
309 list_for_each_entry_rcu(sta, &local->sta_list, list) {
310 if (sdata != sta->sdata)
313 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
314 struct ieee80211_txq *txq = sta->sta.txq[i];
319 txqi = to_txq_info(txq);
324 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX,
328 spin_unlock(&fq->lock);
329 drv_wake_tx_queue(local, txqi);
330 spin_lock(&fq->lock);
337 txqi = to_txq_info(vif->txq);
339 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, &txqi->flags) ||
340 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
343 spin_unlock(&fq->lock);
345 drv_wake_tx_queue(local, txqi);
349 spin_unlock(&fq->lock);
354 __releases(&local->queue_stop_reason_lock)
355 __acquires(&local->queue_stop_reason_lock)
356 _ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
358 struct ieee80211_sub_if_data *sdata;
359 int n_acs = IEEE80211_NUM_ACS;
364 if (local->hw.queues < IEEE80211_NUM_ACS)
367 for (i = 0; i < local->hw.queues; i++) {
368 if (local->queue_stop_reasons[i])
371 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
372 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
375 for (ac = 0; ac < n_acs; ac++) {
376 int ac_queue = sdata->vif.hw_queue[ac];
379 sdata->vif.cab_queue == i)
380 __ieee80211_wake_txqs(sdata, ac);
383 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
389 void ieee80211_wake_txqs(struct tasklet_struct *t)
391 struct ieee80211_local *local = from_tasklet(local, t,
395 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
396 _ieee80211_wake_txqs(local, &flags);
397 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
400 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
402 struct ieee80211_sub_if_data *sdata;
403 int n_acs = IEEE80211_NUM_ACS;
405 if (local->ops->wake_tx_queue)
408 if (local->hw.queues < IEEE80211_NUM_ACS)
411 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
417 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
418 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
421 for (ac = 0; ac < n_acs; ac++) {
422 int ac_queue = sdata->vif.hw_queue[ac];
424 if (ac_queue == queue ||
425 (sdata->vif.cab_queue == queue &&
426 local->queue_stop_reasons[ac_queue] == 0 &&
427 skb_queue_empty(&local->pending[ac_queue])))
428 netif_wake_subqueue(sdata->dev, ac);
433 static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
434 enum queue_stop_reason reason,
436 unsigned long *flags)
438 struct ieee80211_local *local = hw_to_local(hw);
440 trace_wake_queue(local, queue, reason);
442 if (WARN_ON(queue >= hw->queues))
445 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
449 local->q_stop_reasons[queue][reason] = 0;
451 local->q_stop_reasons[queue][reason]--;
452 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
453 local->q_stop_reasons[queue][reason] = 0;
456 if (local->q_stop_reasons[queue][reason] == 0)
457 __clear_bit(reason, &local->queue_stop_reasons[queue]);
459 if (local->queue_stop_reasons[queue] != 0)
460 /* someone still has this queue stopped */
463 if (skb_queue_empty(&local->pending[queue])) {
465 ieee80211_propagate_queue_wake(local, queue);
468 tasklet_schedule(&local->tx_pending_tasklet);
471 * Calling _ieee80211_wake_txqs here can be a problem because it may
472 * release queue_stop_reason_lock which has been taken by
473 * __ieee80211_wake_queue's caller. It is certainly not very nice to
474 * release someone's lock, but it is fine because all the callers of
475 * __ieee80211_wake_queue call it right before releasing the lock.
477 if (local->ops->wake_tx_queue) {
478 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
479 tasklet_schedule(&local->wake_txqs_tasklet);
481 _ieee80211_wake_txqs(local, flags);
485 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
486 enum queue_stop_reason reason,
489 struct ieee80211_local *local = hw_to_local(hw);
492 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
493 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
494 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
497 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
499 ieee80211_wake_queue_by_reason(hw, queue,
500 IEEE80211_QUEUE_STOP_REASON_DRIVER,
503 EXPORT_SYMBOL(ieee80211_wake_queue);
505 static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
506 enum queue_stop_reason reason,
509 struct ieee80211_local *local = hw_to_local(hw);
510 struct ieee80211_sub_if_data *sdata;
511 int n_acs = IEEE80211_NUM_ACS;
513 trace_stop_queue(local, queue, reason);
515 if (WARN_ON(queue >= hw->queues))
519 local->q_stop_reasons[queue][reason] = 1;
521 local->q_stop_reasons[queue][reason]++;
523 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
526 if (local->hw.queues < IEEE80211_NUM_ACS)
530 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
536 for (ac = 0; ac < n_acs; ac++) {
537 if (sdata->vif.hw_queue[ac] == queue ||
538 sdata->vif.cab_queue == queue) {
539 if (!local->ops->wake_tx_queue) {
540 netif_stop_subqueue(sdata->dev, ac);
543 spin_lock(&local->fq.lock);
544 sdata->vif.txqs_stopped[ac] = true;
545 spin_unlock(&local->fq.lock);
552 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
553 enum queue_stop_reason reason,
556 struct ieee80211_local *local = hw_to_local(hw);
559 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
560 __ieee80211_stop_queue(hw, queue, reason, refcounted);
561 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
564 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
566 ieee80211_stop_queue_by_reason(hw, queue,
567 IEEE80211_QUEUE_STOP_REASON_DRIVER,
570 EXPORT_SYMBOL(ieee80211_stop_queue);
572 void ieee80211_add_pending_skb(struct ieee80211_local *local,
575 struct ieee80211_hw *hw = &local->hw;
577 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
578 int queue = info->hw_queue;
580 if (WARN_ON(!info->control.vif)) {
581 ieee80211_free_txskb(&local->hw, skb);
585 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
586 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
588 __skb_queue_tail(&local->pending[queue], skb);
589 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
591 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
594 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
595 struct sk_buff_head *skbs)
597 struct ieee80211_hw *hw = &local->hw;
602 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
603 while ((skb = skb_dequeue(skbs))) {
604 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
606 if (WARN_ON(!info->control.vif)) {
607 ieee80211_free_txskb(&local->hw, skb);
611 queue = info->hw_queue;
613 __ieee80211_stop_queue(hw, queue,
614 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
617 __skb_queue_tail(&local->pending[queue], skb);
620 for (i = 0; i < hw->queues; i++)
621 __ieee80211_wake_queue(hw, i,
622 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
624 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
627 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
628 unsigned long queues,
629 enum queue_stop_reason reason,
632 struct ieee80211_local *local = hw_to_local(hw);
636 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
638 for_each_set_bit(i, &queues, hw->queues)
639 __ieee80211_stop_queue(hw, i, reason, refcounted);
641 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
644 void ieee80211_stop_queues(struct ieee80211_hw *hw)
646 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
647 IEEE80211_QUEUE_STOP_REASON_DRIVER,
650 EXPORT_SYMBOL(ieee80211_stop_queues);
652 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
654 struct ieee80211_local *local = hw_to_local(hw);
658 if (WARN_ON(queue >= hw->queues))
661 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
662 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
663 &local->queue_stop_reasons[queue]);
664 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
667 EXPORT_SYMBOL(ieee80211_queue_stopped);
669 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
670 unsigned long queues,
671 enum queue_stop_reason reason,
674 struct ieee80211_local *local = hw_to_local(hw);
678 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
680 for_each_set_bit(i, &queues, hw->queues)
681 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
683 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
686 void ieee80211_wake_queues(struct ieee80211_hw *hw)
688 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
689 IEEE80211_QUEUE_STOP_REASON_DRIVER,
692 EXPORT_SYMBOL(ieee80211_wake_queues);
695 ieee80211_get_vif_queues(struct ieee80211_local *local,
696 struct ieee80211_sub_if_data *sdata)
700 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
705 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
706 queues |= BIT(sdata->vif.hw_queue[ac]);
707 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
708 queues |= BIT(sdata->vif.cab_queue);
711 queues = BIT(local->hw.queues) - 1;
717 void __ieee80211_flush_queues(struct ieee80211_local *local,
718 struct ieee80211_sub_if_data *sdata,
719 unsigned int queues, bool drop)
721 if (!local->ops->flush)
725 * If no queue was set, or if the HW doesn't support
726 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
728 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
729 queues = ieee80211_get_vif_queues(local, sdata);
731 ieee80211_stop_queues_by_reason(&local->hw, queues,
732 IEEE80211_QUEUE_STOP_REASON_FLUSH,
735 drv_flush(local, sdata, queues, drop);
737 ieee80211_wake_queues_by_reason(&local->hw, queues,
738 IEEE80211_QUEUE_STOP_REASON_FLUSH,
742 void ieee80211_flush_queues(struct ieee80211_local *local,
743 struct ieee80211_sub_if_data *sdata, bool drop)
745 __ieee80211_flush_queues(local, sdata, 0, drop);
748 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
749 struct ieee80211_sub_if_data *sdata,
750 enum queue_stop_reason reason)
752 ieee80211_stop_queues_by_reason(&local->hw,
753 ieee80211_get_vif_queues(local, sdata),
757 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
758 struct ieee80211_sub_if_data *sdata,
759 enum queue_stop_reason reason)
761 ieee80211_wake_queues_by_reason(&local->hw,
762 ieee80211_get_vif_queues(local, sdata),
766 static void __iterate_interfaces(struct ieee80211_local *local,
768 void (*iterator)(void *data, u8 *mac,
769 struct ieee80211_vif *vif),
772 struct ieee80211_sub_if_data *sdata;
773 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
775 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
776 switch (sdata->vif.type) {
777 case NL80211_IFTYPE_MONITOR:
778 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
781 case NL80211_IFTYPE_AP_VLAN:
786 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
787 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
789 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) &&
790 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
792 if (ieee80211_sdata_running(sdata) || !active_only)
793 iterator(data, sdata->vif.addr,
797 sdata = rcu_dereference_check(local->monitor_sdata,
798 lockdep_is_held(&local->iflist_mtx) ||
799 lockdep_is_held(&local->hw.wiphy->mtx));
801 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
802 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
803 iterator(data, sdata->vif.addr, &sdata->vif);
806 void ieee80211_iterate_interfaces(
807 struct ieee80211_hw *hw, u32 iter_flags,
808 void (*iterator)(void *data, u8 *mac,
809 struct ieee80211_vif *vif),
812 struct ieee80211_local *local = hw_to_local(hw);
814 mutex_lock(&local->iflist_mtx);
815 __iterate_interfaces(local, iter_flags, iterator, data);
816 mutex_unlock(&local->iflist_mtx);
818 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
820 void ieee80211_iterate_active_interfaces_atomic(
821 struct ieee80211_hw *hw, u32 iter_flags,
822 void (*iterator)(void *data, u8 *mac,
823 struct ieee80211_vif *vif),
826 struct ieee80211_local *local = hw_to_local(hw);
829 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
833 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
835 void ieee80211_iterate_active_interfaces_mtx(
836 struct ieee80211_hw *hw, u32 iter_flags,
837 void (*iterator)(void *data, u8 *mac,
838 struct ieee80211_vif *vif),
841 struct ieee80211_local *local = hw_to_local(hw);
843 lockdep_assert_wiphy(hw->wiphy);
845 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
848 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx);
850 static void __iterate_stations(struct ieee80211_local *local,
851 void (*iterator)(void *data,
852 struct ieee80211_sta *sta),
855 struct sta_info *sta;
857 list_for_each_entry_rcu(sta, &local->sta_list, list) {
861 iterator(data, &sta->sta);
865 void ieee80211_iterate_stations(struct ieee80211_hw *hw,
866 void (*iterator)(void *data,
867 struct ieee80211_sta *sta),
870 struct ieee80211_local *local = hw_to_local(hw);
872 mutex_lock(&local->sta_mtx);
873 __iterate_stations(local, iterator, data);
874 mutex_unlock(&local->sta_mtx);
876 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations);
878 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
879 void (*iterator)(void *data,
880 struct ieee80211_sta *sta),
883 struct ieee80211_local *local = hw_to_local(hw);
886 __iterate_stations(local, iterator, data);
889 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
891 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
893 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
895 if (!ieee80211_sdata_running(sdata) ||
896 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
900 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
902 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
907 return &vif_to_sdata(vif)->wdev;
909 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
912 * Nothing should have been stuffed into the workqueue during
913 * the suspend->resume cycle. Since we can't check each caller
914 * of this function if we are already quiescing / suspended,
915 * check here and don't WARN since this can actually happen when
916 * the rx path (for example) is racing against __ieee80211_suspend
917 * and suspending / quiescing was set after the rx path checked
920 static bool ieee80211_can_queue_work(struct ieee80211_local *local)
922 if (local->quiescing || (local->suspended && !local->resuming)) {
923 pr_warn("queueing ieee80211 work while going to suspend\n");
930 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
932 struct ieee80211_local *local = hw_to_local(hw);
934 if (!ieee80211_can_queue_work(local))
937 queue_work(local->workqueue, work);
939 EXPORT_SYMBOL(ieee80211_queue_work);
941 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
942 struct delayed_work *dwork,
945 struct ieee80211_local *local = hw_to_local(hw);
947 if (!ieee80211_can_queue_work(local))
950 queue_delayed_work(local->workqueue, dwork, delay);
952 EXPORT_SYMBOL(ieee80211_queue_delayed_work);
954 static void ieee80211_parse_extension_element(u32 *crc,
955 const struct element *elem,
956 struct ieee802_11_elems *elems)
958 const void *data = elem->data + 1;
964 len = elem->datalen - 1;
966 switch (elem->data[0]) {
967 case WLAN_EID_EXT_HE_MU_EDCA:
968 if (len >= sizeof(*elems->mu_edca_param_set)) {
969 elems->mu_edca_param_set = data;
971 *crc = crc32_be(*crc, (void *)elem,
975 case WLAN_EID_EXT_HE_CAPABILITY:
976 elems->he_cap = data;
977 elems->he_cap_len = len;
979 case WLAN_EID_EXT_HE_OPERATION:
980 if (len >= sizeof(*elems->he_operation) &&
981 len >= ieee80211_he_oper_size(data) - 1) {
983 *crc = crc32_be(*crc, (void *)elem,
985 elems->he_operation = data;
988 case WLAN_EID_EXT_UORA:
990 elems->uora_element = data;
992 case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME:
994 elems->max_channel_switch_time = data;
996 case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION:
997 if (len >= sizeof(*elems->mbssid_config_ie))
998 elems->mbssid_config_ie = data;
1000 case WLAN_EID_EXT_HE_SPR:
1001 if (len >= sizeof(*elems->he_spr) &&
1002 len >= ieee80211_he_spr_size(data))
1003 elems->he_spr = data;
1005 case WLAN_EID_EXT_HE_6GHZ_CAPA:
1006 if (len >= sizeof(*elems->he_6ghz_capa))
1007 elems->he_6ghz_capa = data;
1013 _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1014 struct ieee802_11_elems *elems,
1015 u64 filter, u32 crc,
1016 const struct element *check_inherit)
1018 const struct element *elem;
1019 bool calc_crc = filter != 0;
1020 DECLARE_BITMAP(seen_elems, 256);
1023 bitmap_zero(seen_elems, 256);
1025 for_each_element(elem, start, len) {
1026 bool elem_parse_failed;
1028 u8 elen = elem->datalen;
1029 const u8 *pos = elem->data;
1031 if (check_inherit &&
1032 !cfg80211_is_element_inherited(elem,
1038 case WLAN_EID_SUPP_RATES:
1039 case WLAN_EID_FH_PARAMS:
1040 case WLAN_EID_DS_PARAMS:
1041 case WLAN_EID_CF_PARAMS:
1043 case WLAN_EID_IBSS_PARAMS:
1044 case WLAN_EID_CHALLENGE:
1046 case WLAN_EID_ERP_INFO:
1047 case WLAN_EID_EXT_SUPP_RATES:
1048 case WLAN_EID_HT_CAPABILITY:
1049 case WLAN_EID_HT_OPERATION:
1050 case WLAN_EID_VHT_CAPABILITY:
1051 case WLAN_EID_VHT_OPERATION:
1052 case WLAN_EID_MESH_ID:
1053 case WLAN_EID_MESH_CONFIG:
1054 case WLAN_EID_PEER_MGMT:
1059 case WLAN_EID_CHANNEL_SWITCH:
1060 case WLAN_EID_EXT_CHANSWITCH_ANN:
1061 case WLAN_EID_COUNTRY:
1062 case WLAN_EID_PWR_CONSTRAINT:
1063 case WLAN_EID_TIMEOUT_INTERVAL:
1064 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1065 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1066 case WLAN_EID_CHAN_SWITCH_PARAM:
1067 case WLAN_EID_EXT_CAPABILITY:
1068 case WLAN_EID_CHAN_SWITCH_TIMING:
1069 case WLAN_EID_LINK_ID:
1070 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1072 case WLAN_EID_S1G_BCN_COMPAT:
1073 case WLAN_EID_S1G_CAPABILITIES:
1074 case WLAN_EID_S1G_OPERATION:
1075 case WLAN_EID_AID_RESPONSE:
1076 case WLAN_EID_S1G_SHORT_BCN_INTERVAL:
1078 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
1079 * that if the content gets bigger it might be needed more than once
1081 if (test_bit(id, seen_elems)) {
1082 elems->parse_error = true;
1088 if (calc_crc && id < 64 && (filter & (1ULL << id)))
1089 crc = crc32_be(crc, pos - 2, elen + 2);
1091 elem_parse_failed = false;
1094 case WLAN_EID_LINK_ID:
1095 if (elen + 2 < sizeof(struct ieee80211_tdls_lnkie)) {
1096 elem_parse_failed = true;
1099 elems->lnk_id = (void *)(pos - 2);
1101 case WLAN_EID_CHAN_SWITCH_TIMING:
1102 if (elen < sizeof(struct ieee80211_ch_switch_timing)) {
1103 elem_parse_failed = true;
1106 elems->ch_sw_timing = (void *)pos;
1108 case WLAN_EID_EXT_CAPABILITY:
1109 elems->ext_capab = pos;
1110 elems->ext_capab_len = elen;
1114 elems->ssid_len = elen;
1116 case WLAN_EID_SUPP_RATES:
1117 elems->supp_rates = pos;
1118 elems->supp_rates_len = elen;
1120 case WLAN_EID_DS_PARAMS:
1122 elems->ds_params = pos;
1124 elem_parse_failed = true;
1127 if (elen >= sizeof(struct ieee80211_tim_ie)) {
1128 elems->tim = (void *)pos;
1129 elems->tim_len = elen;
1131 elem_parse_failed = true;
1133 case WLAN_EID_VENDOR_SPECIFIC:
1134 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1136 /* Microsoft OUI (00:50:F2) */
1139 crc = crc32_be(crc, pos - 2, elen + 2);
1141 if (elen >= 5 && pos[3] == 2) {
1142 /* OUI Type 2 - WMM IE */
1144 elems->wmm_info = pos;
1145 elems->wmm_info_len = elen;
1146 } else if (pos[4] == 1) {
1147 elems->wmm_param = pos;
1148 elems->wmm_param_len = elen;
1155 elems->rsn_len = elen;
1157 case WLAN_EID_ERP_INFO:
1159 elems->erp_info = pos;
1161 elem_parse_failed = true;
1163 case WLAN_EID_EXT_SUPP_RATES:
1164 elems->ext_supp_rates = pos;
1165 elems->ext_supp_rates_len = elen;
1167 case WLAN_EID_HT_CAPABILITY:
1168 if (elen >= sizeof(struct ieee80211_ht_cap))
1169 elems->ht_cap_elem = (void *)pos;
1171 elem_parse_failed = true;
1173 case WLAN_EID_HT_OPERATION:
1174 if (elen >= sizeof(struct ieee80211_ht_operation))
1175 elems->ht_operation = (void *)pos;
1177 elem_parse_failed = true;
1179 case WLAN_EID_VHT_CAPABILITY:
1180 if (elen >= sizeof(struct ieee80211_vht_cap))
1181 elems->vht_cap_elem = (void *)pos;
1183 elem_parse_failed = true;
1185 case WLAN_EID_VHT_OPERATION:
1186 if (elen >= sizeof(struct ieee80211_vht_operation)) {
1187 elems->vht_operation = (void *)pos;
1189 crc = crc32_be(crc, pos - 2, elen + 2);
1192 elem_parse_failed = true;
1194 case WLAN_EID_OPMODE_NOTIF:
1196 elems->opmode_notif = pos;
1198 crc = crc32_be(crc, pos - 2, elen + 2);
1201 elem_parse_failed = true;
1203 case WLAN_EID_MESH_ID:
1204 elems->mesh_id = pos;
1205 elems->mesh_id_len = elen;
1207 case WLAN_EID_MESH_CONFIG:
1208 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1209 elems->mesh_config = (void *)pos;
1211 elem_parse_failed = true;
1213 case WLAN_EID_PEER_MGMT:
1214 elems->peering = pos;
1215 elems->peering_len = elen;
1217 case WLAN_EID_MESH_AWAKE_WINDOW:
1219 elems->awake_window = (void *)pos;
1223 elems->preq_len = elen;
1227 elems->prep_len = elen;
1231 elems->perr_len = elen;
1234 if (elen >= sizeof(struct ieee80211_rann_ie))
1235 elems->rann = (void *)pos;
1237 elem_parse_failed = true;
1239 case WLAN_EID_CHANNEL_SWITCH:
1240 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1241 elem_parse_failed = true;
1244 elems->ch_switch_ie = (void *)pos;
1246 case WLAN_EID_EXT_CHANSWITCH_ANN:
1247 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1248 elem_parse_failed = true;
1251 elems->ext_chansw_ie = (void *)pos;
1253 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1254 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1255 elem_parse_failed = true;
1258 elems->sec_chan_offs = (void *)pos;
1260 case WLAN_EID_CHAN_SWITCH_PARAM:
1262 sizeof(*elems->mesh_chansw_params_ie)) {
1263 elem_parse_failed = true;
1266 elems->mesh_chansw_params_ie = (void *)pos;
1268 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1270 elen < sizeof(*elems->wide_bw_chansw_ie)) {
1271 elem_parse_failed = true;
1274 elems->wide_bw_chansw_ie = (void *)pos;
1276 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1278 elem_parse_failed = true;
1282 * This is a bit tricky, but as we only care about
1283 * the wide bandwidth channel switch element, so
1284 * just parse it out manually.
1286 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1289 if (ie[1] >= sizeof(*elems->wide_bw_chansw_ie))
1290 elems->wide_bw_chansw_ie =
1293 elem_parse_failed = true;
1296 case WLAN_EID_COUNTRY:
1297 elems->country_elem = pos;
1298 elems->country_elem_len = elen;
1300 case WLAN_EID_PWR_CONSTRAINT:
1302 elem_parse_failed = true;
1305 elems->pwr_constr_elem = pos;
1307 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1308 /* Lots of different options exist, but we only care
1309 * about the Dynamic Transmit Power Control element.
1310 * First check for the Cisco OUI, then for the DTPC
1314 elem_parse_failed = true;
1318 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1319 pos[2] != 0x96 || pos[3] != 0x00)
1323 elem_parse_failed = true;
1328 crc = crc32_be(crc, pos - 2, elen + 2);
1330 elems->cisco_dtpc_elem = pos;
1332 case WLAN_EID_ADDBA_EXT:
1333 if (elen < sizeof(struct ieee80211_addba_ext_ie)) {
1334 elem_parse_failed = true;
1337 elems->addba_ext_ie = (void *)pos;
1339 case WLAN_EID_TIMEOUT_INTERVAL:
1340 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1341 elems->timeout_int = (void *)pos;
1343 elem_parse_failed = true;
1345 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1346 if (elen >= sizeof(*elems->max_idle_period_ie))
1347 elems->max_idle_period_ie = (void *)pos;
1351 elems->rsnx_len = elen;
1353 case WLAN_EID_TX_POWER_ENVELOPE:
1355 elen > sizeof(struct ieee80211_tx_pwr_env))
1358 if (elems->tx_pwr_env_num >= ARRAY_SIZE(elems->tx_pwr_env))
1361 elems->tx_pwr_env[elems->tx_pwr_env_num] = (void *)pos;
1362 elems->tx_pwr_env_len[elems->tx_pwr_env_num] = elen;
1363 elems->tx_pwr_env_num++;
1365 case WLAN_EID_EXTENSION:
1366 ieee80211_parse_extension_element(calc_crc ?
1370 case WLAN_EID_S1G_CAPABILITIES:
1371 if (elen >= sizeof(*elems->s1g_capab))
1372 elems->s1g_capab = (void *)pos;
1374 elem_parse_failed = true;
1376 case WLAN_EID_S1G_OPERATION:
1377 if (elen == sizeof(*elems->s1g_oper))
1378 elems->s1g_oper = (void *)pos;
1380 elem_parse_failed = true;
1382 case WLAN_EID_S1G_BCN_COMPAT:
1383 if (elen == sizeof(*elems->s1g_bcn_compat))
1384 elems->s1g_bcn_compat = (void *)pos;
1386 elem_parse_failed = true;
1388 case WLAN_EID_AID_RESPONSE:
1389 if (elen == sizeof(struct ieee80211_aid_response_ie))
1390 elems->aid_resp = (void *)pos;
1392 elem_parse_failed = true;
1398 if (elem_parse_failed)
1399 elems->parse_error = true;
1401 __set_bit(id, seen_elems);
1404 if (!for_each_element_completed(elem, start, len))
1405 elems->parse_error = true;
1410 static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1411 struct ieee802_11_elems *elems,
1412 const u8 *transmitter_bssid,
1413 const u8 *bss_bssid,
1414 u8 *nontransmitted_profile)
1416 const struct element *elem, *sub;
1417 size_t profile_len = 0;
1420 if (!bss_bssid || !transmitter_bssid)
1423 for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1424 if (elem->datalen < 2)
1427 for_each_element(sub, elem->data + 1, elem->datalen - 1) {
1428 u8 new_bssid[ETH_ALEN];
1431 if (sub->id != 0 || sub->datalen < 4) {
1432 /* not a valid BSS profile */
1436 if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1437 sub->data[1] != 2) {
1438 /* The first element of the
1439 * Nontransmitted BSSID Profile is not
1440 * the Nontransmitted BSSID Capability
1446 memset(nontransmitted_profile, 0, len);
1447 profile_len = cfg80211_merge_profile(start, len,
1450 nontransmitted_profile,
1453 /* found a Nontransmitted BSSID Profile */
1454 index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
1455 nontransmitted_profile,
1457 if (!index || index[1] < 1 || index[2] == 0) {
1458 /* Invalid MBSSID Index element */
1462 cfg80211_gen_new_bssid(transmitter_bssid,
1466 if (ether_addr_equal(new_bssid, bss_bssid)) {
1468 elems->bssid_index_len = index[1];
1469 elems->bssid_index = (void *)&index[2];
1475 return found ? profile_len : 0;
1478 struct ieee802_11_elems *ieee802_11_parse_elems_crc(const u8 *start, size_t len,
1479 bool action, u64 filter,
1481 const u8 *transmitter_bssid,
1482 const u8 *bss_bssid)
1484 struct ieee802_11_elems *elems;
1485 const struct element *non_inherit = NULL;
1486 u8 *nontransmitted_profile;
1487 int nontransmitted_profile_len = 0;
1489 elems = kzalloc(sizeof(*elems), GFP_ATOMIC);
1492 elems->ie_start = start;
1493 elems->total_len = len;
1495 nontransmitted_profile = kmalloc(len, GFP_ATOMIC);
1496 if (nontransmitted_profile) {
1497 nontransmitted_profile_len =
1498 ieee802_11_find_bssid_profile(start, len, elems,
1501 nontransmitted_profile);
1503 cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1504 nontransmitted_profile,
1505 nontransmitted_profile_len);
1508 crc = _ieee802_11_parse_elems_crc(start, len, action, elems, filter,
1511 /* Override with nontransmitted profile, if found */
1512 if (nontransmitted_profile_len)
1513 _ieee802_11_parse_elems_crc(nontransmitted_profile,
1514 nontransmitted_profile_len,
1515 action, elems, 0, 0, NULL);
1517 if (elems->tim && !elems->parse_error) {
1518 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1520 elems->dtim_period = tim_ie->dtim_period;
1521 elems->dtim_count = tim_ie->dtim_count;
1524 /* Override DTIM period and count if needed */
1525 if (elems->bssid_index &&
1526 elems->bssid_index_len >=
1527 offsetofend(struct ieee80211_bssid_index, dtim_period))
1528 elems->dtim_period = elems->bssid_index->dtim_period;
1530 if (elems->bssid_index &&
1531 elems->bssid_index_len >=
1532 offsetofend(struct ieee80211_bssid_index, dtim_count))
1533 elems->dtim_count = elems->bssid_index->dtim_count;
1535 kfree(nontransmitted_profile);
1542 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1543 struct ieee80211_tx_queue_params
1546 struct ieee80211_chanctx_conf *chanctx_conf;
1547 const struct ieee80211_reg_rule *rrule;
1548 const struct ieee80211_wmm_ac *wmm_ac;
1549 u16 center_freq = 0;
1551 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1552 sdata->vif.type != NL80211_IFTYPE_STATION)
1556 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1558 center_freq = chanctx_conf->def.chan->center_freq;
1565 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1567 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
1572 if (sdata->vif.type == NL80211_IFTYPE_AP)
1573 wmm_ac = &rrule->wmm_rule.ap[ac];
1575 wmm_ac = &rrule->wmm_rule.client[ac];
1576 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1577 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1578 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
1579 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
1583 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1584 bool bss_notify, bool enable_qos)
1586 struct ieee80211_local *local = sdata->local;
1587 struct ieee80211_tx_queue_params qparam;
1588 struct ieee80211_chanctx_conf *chanctx_conf;
1591 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
1594 if (!local->ops->conf_tx)
1597 if (local->hw.queues < IEEE80211_NUM_ACS)
1600 memset(&qparam, 0, sizeof(qparam));
1603 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1604 use_11b = (chanctx_conf &&
1605 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
1606 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
1609 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1611 /* Set defaults according to 802.11-2007 Table 7-37 */
1618 /* Confiure old 802.11b/g medium access rules. */
1619 qparam.cw_max = aCWmax;
1620 qparam.cw_min = aCWmin;
1624 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1625 /* Update if QoS is enabled. */
1628 case IEEE80211_AC_BK:
1629 qparam.cw_max = aCWmax;
1630 qparam.cw_min = aCWmin;
1637 /* never happens but let's not leave undefined */
1639 case IEEE80211_AC_BE:
1640 qparam.cw_max = aCWmax;
1641 qparam.cw_min = aCWmin;
1648 case IEEE80211_AC_VI:
1649 qparam.cw_max = aCWmin;
1650 qparam.cw_min = (aCWmin + 1) / 2 - 1;
1654 qparam.txop = 6016/32;
1656 qparam.txop = 3008/32;
1663 case IEEE80211_AC_VO:
1664 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1665 qparam.cw_min = (aCWmin + 1) / 4 - 1;
1669 qparam.txop = 3264/32;
1671 qparam.txop = 1504/32;
1676 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
1678 qparam.uapsd = false;
1680 sdata->tx_conf[ac] = qparam;
1681 drv_conf_tx(local, sdata, ac, &qparam);
1684 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1685 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1686 sdata->vif.type != NL80211_IFTYPE_NAN) {
1687 sdata->vif.bss_conf.qos = enable_qos;
1689 ieee80211_bss_info_change_notify(sdata,
1694 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1695 u16 transaction, u16 auth_alg, u16 status,
1696 const u8 *extra, size_t extra_len, const u8 *da,
1697 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1700 struct ieee80211_local *local = sdata->local;
1701 struct sk_buff *skb;
1702 struct ieee80211_mgmt *mgmt;
1705 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
1706 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1707 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
1711 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
1713 mgmt = skb_put_zero(skb, 24 + 6);
1714 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1715 IEEE80211_STYPE_AUTH);
1716 memcpy(mgmt->da, da, ETH_ALEN);
1717 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1718 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1719 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1720 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
1721 mgmt->u.auth.status_code = cpu_to_le16(status);
1723 skb_put_data(skb, extra, extra_len);
1725 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1726 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1727 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1734 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1736 ieee80211_tx_skb(sdata, skb);
1739 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1740 const u8 *da, const u8 *bssid,
1741 u16 stype, u16 reason,
1742 bool send_frame, u8 *frame_buf)
1744 struct ieee80211_local *local = sdata->local;
1745 struct sk_buff *skb;
1746 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1749 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1750 mgmt->duration = 0; /* initialize only */
1751 mgmt->seq_ctrl = 0; /* initialize only */
1752 memcpy(mgmt->da, da, ETH_ALEN);
1753 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1754 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1755 /* u.deauth.reason_code == u.disassoc.reason_code */
1756 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1759 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1760 IEEE80211_DEAUTH_FRAME_LEN);
1764 skb_reserve(skb, local->hw.extra_tx_headroom);
1767 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1769 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1770 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1771 IEEE80211_SKB_CB(skb)->flags |=
1772 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1774 ieee80211_tx_skb(sdata, skb);
1778 static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end)
1780 if ((end - pos) < 5)
1783 *pos++ = WLAN_EID_EXTENSION;
1784 *pos++ = 1 + sizeof(cap);
1785 *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA;
1786 memcpy(pos, &cap, sizeof(cap));
1791 static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
1792 u8 *buffer, size_t buffer_len,
1793 const u8 *ie, size_t ie_len,
1794 enum nl80211_band band,
1796 struct cfg80211_chan_def *chandef,
1797 size_t *offset, u32 flags)
1799 struct ieee80211_local *local = sdata->local;
1800 struct ieee80211_supported_band *sband;
1801 const struct ieee80211_sta_he_cap *he_cap;
1802 u8 *pos = buffer, *end = buffer + buffer_len;
1804 int supp_rates_len, i;
1810 bool have_80mhz = false;
1814 sband = local->hw.wiphy->bands[band];
1815 if (WARN_ON_ONCE(!sband))
1818 rate_flags = ieee80211_chandef_rate_flags(chandef);
1819 shift = ieee80211_chandef_get_shift(chandef);
1822 for (i = 0; i < sband->n_bitrates; i++) {
1823 if ((BIT(i) & rate_mask) == 0)
1824 continue; /* skip rate */
1825 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1828 rates[num_rates++] =
1829 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1833 supp_rates_len = min_t(int, num_rates, 8);
1835 if (end - pos < 2 + supp_rates_len)
1837 *pos++ = WLAN_EID_SUPP_RATES;
1838 *pos++ = supp_rates_len;
1839 memcpy(pos, rates, supp_rates_len);
1840 pos += supp_rates_len;
1842 /* insert "request information" if in custom IEs */
1844 static const u8 before_extrates[] = {
1846 WLAN_EID_SUPP_RATES,
1849 noffset = ieee80211_ie_split(ie, ie_len,
1851 ARRAY_SIZE(before_extrates),
1853 if (end - pos < noffset - *offset)
1855 memcpy(pos, ie + *offset, noffset - *offset);
1856 pos += noffset - *offset;
1860 ext_rates_len = num_rates - supp_rates_len;
1861 if (ext_rates_len > 0) {
1862 if (end - pos < 2 + ext_rates_len)
1864 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1865 *pos++ = ext_rates_len;
1866 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1867 pos += ext_rates_len;
1870 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
1873 *pos++ = WLAN_EID_DS_PARAMS;
1875 *pos++ = ieee80211_frequency_to_channel(
1876 chandef->chan->center_freq);
1879 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1882 /* insert custom IEs that go before HT */
1884 static const u8 before_ht[] = {
1886 * no need to list the ones split off already
1887 * (or generated here)
1890 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1892 noffset = ieee80211_ie_split(ie, ie_len,
1893 before_ht, ARRAY_SIZE(before_ht),
1895 if (end - pos < noffset - *offset)
1897 memcpy(pos, ie + *offset, noffset - *offset);
1898 pos += noffset - *offset;
1902 if (sband->ht_cap.ht_supported) {
1903 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1905 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1909 /* insert custom IEs that go before VHT */
1911 static const u8 before_vht[] = {
1913 * no need to list the ones split off already
1914 * (or generated here)
1916 WLAN_EID_BSS_COEX_2040,
1917 WLAN_EID_EXT_CAPABILITY,
1919 WLAN_EID_CHANNEL_USAGE,
1920 WLAN_EID_INTERWORKING,
1922 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
1924 noffset = ieee80211_ie_split(ie, ie_len,
1925 before_vht, ARRAY_SIZE(before_vht),
1927 if (end - pos < noffset - *offset)
1929 memcpy(pos, ie + *offset, noffset - *offset);
1930 pos += noffset - *offset;
1934 /* Check if any channel in this sband supports at least 80 MHz */
1935 for (i = 0; i < sband->n_channels; i++) {
1936 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1937 IEEE80211_CHAN_NO_80MHZ))
1944 if (sband->vht_cap.vht_supported && have_80mhz) {
1945 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1947 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1948 sband->vht_cap.cap);
1951 /* insert custom IEs that go before HE */
1953 static const u8 before_he[] = {
1955 * no need to list the ones split off before VHT
1958 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1960 /* TODO: add 11ah/11aj/11ak elements */
1962 noffset = ieee80211_ie_split(ie, ie_len,
1963 before_he, ARRAY_SIZE(before_he),
1965 if (end - pos < noffset - *offset)
1967 memcpy(pos, ie + *offset, noffset - *offset);
1968 pos += noffset - *offset;
1972 he_cap = ieee80211_get_he_iftype_cap(sband,
1973 ieee80211_vif_type_p2p(&sdata->vif));
1975 cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
1976 IEEE80211_CHAN_NO_HE)) {
1977 pos = ieee80211_ie_build_he_cap(pos, he_cap, end);
1982 if (cfg80211_any_usable_channels(local->hw.wiphy,
1983 BIT(NL80211_BAND_6GHZ),
1984 IEEE80211_CHAN_NO_HE)) {
1985 struct ieee80211_supported_band *sband6;
1987 sband6 = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
1988 he_cap = ieee80211_get_he_iftype_cap(sband6,
1989 ieee80211_vif_type_p2p(&sdata->vif));
1992 enum nl80211_iftype iftype =
1993 ieee80211_vif_type_p2p(&sdata->vif);
1994 __le16 cap = ieee80211_get_he_6ghz_capa(sband, iftype);
1996 pos = ieee80211_write_he_6ghz_cap(pos, cap, end);
2001 * If adding more here, adjust code in main.c
2002 * that calculates local->scan_ies_len.
2005 return pos - buffer;
2007 WARN_ONCE(1, "not enough space for preq IEs\n");
2009 return pos - buffer;
2012 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2014 struct ieee80211_scan_ies *ie_desc,
2015 const u8 *ie, size_t ie_len,
2016 u8 bands_used, u32 *rate_masks,
2017 struct cfg80211_chan_def *chandef,
2020 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
2023 memset(ie_desc, 0, sizeof(*ie_desc));
2025 for (i = 0; i < NUM_NL80211_BANDS; i++) {
2026 if (bands_used & BIT(i)) {
2027 pos += ieee80211_build_preq_ies_band(sdata,
2035 ie_desc->ies[i] = buffer + old_pos;
2036 ie_desc->len[i] = pos - old_pos;
2041 /* add any remaining custom IEs */
2043 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
2044 "not enough space for preq custom IEs\n"))
2046 memcpy(buffer + pos, ie + custom_ie_offset,
2047 ie_len - custom_ie_offset);
2048 ie_desc->common_ies = buffer + pos;
2049 ie_desc->common_ie_len = ie_len - custom_ie_offset;
2050 pos += ie_len - custom_ie_offset;
2056 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2057 const u8 *src, const u8 *dst,
2059 struct ieee80211_channel *chan,
2060 const u8 *ssid, size_t ssid_len,
2061 const u8 *ie, size_t ie_len,
2064 struct ieee80211_local *local = sdata->local;
2065 struct cfg80211_chan_def chandef;
2066 struct sk_buff *skb;
2067 struct ieee80211_mgmt *mgmt;
2069 u32 rate_masks[NUM_NL80211_BANDS] = {};
2070 struct ieee80211_scan_ies dummy_ie_desc;
2073 * Do not send DS Channel parameter for directed probe requests
2074 * in order to maximize the chance that we get a response. Some
2075 * badly-behaved APs don't respond when this parameter is included.
2077 chandef.width = sdata->vif.bss_conf.chandef.width;
2078 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
2079 chandef.chan = NULL;
2081 chandef.chan = chan;
2083 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
2084 local->scan_ies_len + ie_len);
2088 rate_masks[chan->band] = ratemask;
2089 ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb),
2090 skb_tailroom(skb), &dummy_ie_desc,
2091 ie, ie_len, BIT(chan->band),
2092 rate_masks, &chandef, flags);
2093 skb_put(skb, ies_len);
2096 mgmt = (struct ieee80211_mgmt *) skb->data;
2097 memcpy(mgmt->da, dst, ETH_ALEN);
2098 memcpy(mgmt->bssid, dst, ETH_ALEN);
2101 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
2106 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2107 struct ieee802_11_elems *elems,
2108 enum nl80211_band band, u32 *basic_rates)
2110 struct ieee80211_supported_band *sband;
2112 u32 supp_rates, rate_flags;
2115 sband = sdata->local->hw.wiphy->bands[band];
2116 if (WARN_ON(!sband))
2119 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2120 shift = ieee80211_vif_get_shift(&sdata->vif);
2122 num_rates = sband->n_bitrates;
2124 for (i = 0; i < elems->supp_rates_len +
2125 elems->ext_supp_rates_len; i++) {
2129 if (i < elems->supp_rates_len)
2130 rate = elems->supp_rates[i];
2131 else if (elems->ext_supp_rates)
2132 rate = elems->ext_supp_rates
2133 [i - elems->supp_rates_len];
2134 own_rate = 5 * (rate & 0x7f);
2135 is_basic = !!(rate & 0x80);
2137 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2140 for (j = 0; j < num_rates; j++) {
2142 if ((rate_flags & sband->bitrates[j].flags)
2146 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
2149 if (brate == own_rate) {
2150 supp_rates |= BIT(j);
2151 if (basic_rates && is_basic)
2152 *basic_rates |= BIT(j);
2159 void ieee80211_stop_device(struct ieee80211_local *local)
2161 ieee80211_led_radio(local, false);
2162 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
2164 cancel_work_sync(&local->reconfig_filter);
2166 flush_workqueue(local->workqueue);
2170 static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
2173 /* It's possible that we don't handle the scan completion in
2174 * time during suspend, so if it's still marked as completed
2175 * here, queue the work and flush it to clean things up.
2176 * Instead of calling the worker function directly here, we
2177 * really queue it to avoid potential races with other flows
2178 * scheduling the same work.
2180 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2181 /* If coming from reconfiguration failure, abort the scan so
2182 * we don't attempt to continue a partial HW scan - which is
2183 * possible otherwise if (e.g.) the 2.4 GHz portion was the
2184 * completed scan, and a 5 GHz portion is still pending.
2187 set_bit(SCAN_ABORTED, &local->scanning);
2188 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2189 flush_delayed_work(&local->scan_work);
2193 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2195 struct ieee80211_sub_if_data *sdata;
2196 struct ieee80211_chanctx *ctx;
2199 * We get here if during resume the device can't be restarted properly.
2200 * We might also get here if this happens during HW reset, which is a
2201 * slightly different situation and we need to drop all connections in
2204 * Ask cfg80211 to turn off all interfaces, this will result in more
2205 * warnings but at least we'll then get into a clean stopped state.
2208 local->resuming = false;
2209 local->suspended = false;
2210 local->in_reconfig = false;
2212 ieee80211_flush_completed_scan(local, true);
2214 /* scheduled scan clearly can't be running any more, but tell
2215 * cfg80211 and clear local state
2217 ieee80211_sched_scan_end(local);
2219 list_for_each_entry(sdata, &local->interfaces, list)
2220 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2222 /* Mark channel contexts as not being in the driver any more to avoid
2223 * removing them from the driver during the shutdown process...
2225 mutex_lock(&local->chanctx_mtx);
2226 list_for_each_entry(ctx, &local->chanctx_list, list)
2227 ctx->driver_present = false;
2228 mutex_unlock(&local->chanctx_mtx);
2231 static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2232 struct ieee80211_sub_if_data *sdata)
2234 struct ieee80211_chanctx_conf *conf;
2235 struct ieee80211_chanctx *ctx;
2237 if (!local->use_chanctx)
2240 mutex_lock(&local->chanctx_mtx);
2241 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2242 lockdep_is_held(&local->chanctx_mtx));
2244 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2245 drv_assign_vif_chanctx(local, sdata, ctx);
2247 mutex_unlock(&local->chanctx_mtx);
2250 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2252 struct ieee80211_local *local = sdata->local;
2253 struct sta_info *sta;
2256 mutex_lock(&local->sta_mtx);
2257 list_for_each_entry(sta, &local->sta_list, list) {
2258 enum ieee80211_sta_state state;
2260 if (!sta->uploaded || sta->sdata != sdata)
2263 for (state = IEEE80211_STA_NOTEXIST;
2264 state < sta->sta_state; state++)
2265 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2268 mutex_unlock(&local->sta_mtx);
2271 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2273 struct cfg80211_nan_func *func, **funcs;
2276 res = drv_start_nan(sdata->local, sdata,
2277 &sdata->u.nan.conf);
2281 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2287 /* Add all the functions:
2288 * This is a little bit ugly. We need to call a potentially sleeping
2289 * callback for each NAN function, so we can't hold the spinlock.
2291 spin_lock_bh(&sdata->u.nan.func_lock);
2293 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2296 spin_unlock_bh(&sdata->u.nan.func_lock);
2298 for (i = 0; funcs[i]; i++) {
2299 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2301 ieee80211_nan_func_terminated(&sdata->vif,
2302 funcs[i]->instance_id,
2303 NL80211_NAN_FUNC_TERM_REASON_ERROR,
2312 int ieee80211_reconfig(struct ieee80211_local *local)
2314 struct ieee80211_hw *hw = &local->hw;
2315 struct ieee80211_sub_if_data *sdata;
2316 struct ieee80211_chanctx *ctx;
2317 struct sta_info *sta;
2319 bool reconfig_due_to_wowlan = false;
2320 struct ieee80211_sub_if_data *sched_scan_sdata;
2321 struct cfg80211_sched_scan_request *sched_scan_req;
2322 bool sched_scan_stopped = false;
2323 bool suspended = local->suspended;
2325 /* nothing to do if HW shouldn't run */
2326 if (!local->open_count)
2331 local->resuming = true;
2333 if (local->wowlan) {
2335 * In the wowlan case, both mac80211 and the device
2336 * are functional when the resume op is called, so
2337 * clear local->suspended so the device could operate
2338 * normally (e.g. pass rx frames).
2340 local->suspended = false;
2341 res = drv_resume(local);
2342 local->wowlan = false;
2344 local->resuming = false;
2351 * res is 1, which means the driver requested
2352 * to go through a regular reset on wakeup.
2353 * restore local->suspended in this case.
2355 reconfig_due_to_wowlan = true;
2356 local->suspended = true;
2361 * In case of hw_restart during suspend (without wowlan),
2362 * cancel restart work, as we are reconfiguring the device
2364 * Note that restart_work is scheduled on a frozen workqueue,
2365 * so we can't deadlock in this case.
2367 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2368 cancel_work_sync(&local->restart_work);
2370 local->started = false;
2373 * Upon resume hardware can sometimes be goofy due to
2374 * various platform / driver / bus issues, so restarting
2375 * the device may at times not work immediately. Propagate
2378 res = drv_start(local);
2381 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2383 WARN(1, "Hardware became unavailable during restart.\n");
2384 ieee80211_handle_reconfig_failure(local);
2388 /* setup fragmentation threshold */
2389 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2391 /* setup RTS threshold */
2392 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2394 /* reset coverage class */
2395 drv_set_coverage_class(local, hw->wiphy->coverage_class);
2397 ieee80211_led_radio(local, true);
2398 ieee80211_mod_tpt_led_trig(local,
2399 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2401 /* add interfaces */
2402 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata);
2404 /* in HW restart it exists already */
2405 WARN_ON(local->resuming);
2406 res = drv_add_interface(local, sdata);
2408 RCU_INIT_POINTER(local->monitor_sdata, NULL);
2414 list_for_each_entry(sdata, &local->interfaces, list) {
2415 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2416 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2417 ieee80211_sdata_running(sdata)) {
2418 res = drv_add_interface(local, sdata);
2424 /* If adding any of the interfaces failed above, roll back and
2428 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2430 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2431 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2432 ieee80211_sdata_running(sdata))
2433 drv_remove_interface(local, sdata);
2434 ieee80211_handle_reconfig_failure(local);
2438 /* add channel contexts */
2439 if (local->use_chanctx) {
2440 mutex_lock(&local->chanctx_mtx);
2441 list_for_each_entry(ctx, &local->chanctx_list, list)
2442 if (ctx->replace_state !=
2443 IEEE80211_CHANCTX_REPLACES_OTHER)
2444 WARN_ON(drv_add_chanctx(local, ctx));
2445 mutex_unlock(&local->chanctx_mtx);
2447 sdata = wiphy_dereference(local->hw.wiphy,
2448 local->monitor_sdata);
2449 if (sdata && ieee80211_sdata_running(sdata))
2450 ieee80211_assign_chanctx(local, sdata);
2453 /* reconfigure hardware */
2454 ieee80211_hw_config(local, ~0);
2456 ieee80211_configure_filter(local);
2458 /* Finally also reconfigure all the BSS information */
2459 list_for_each_entry(sdata, &local->interfaces, list) {
2462 if (!ieee80211_sdata_running(sdata))
2465 ieee80211_assign_chanctx(local, sdata);
2467 switch (sdata->vif.type) {
2468 case NL80211_IFTYPE_AP_VLAN:
2469 case NL80211_IFTYPE_MONITOR:
2471 case NL80211_IFTYPE_ADHOC:
2472 if (sdata->vif.bss_conf.ibss_joined)
2473 WARN_ON(drv_join_ibss(local, sdata));
2476 ieee80211_reconfig_stations(sdata);
2478 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2479 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2480 drv_conf_tx(local, sdata, i,
2481 &sdata->tx_conf[i]);
2485 /* common change flags for all interface types */
2486 changed = BSS_CHANGED_ERP_CTS_PROT |
2487 BSS_CHANGED_ERP_PREAMBLE |
2488 BSS_CHANGED_ERP_SLOT |
2490 BSS_CHANGED_BASIC_RATES |
2491 BSS_CHANGED_BEACON_INT |
2496 BSS_CHANGED_TXPOWER |
2497 BSS_CHANGED_MCAST_RATE;
2499 if (sdata->vif.mu_mimo_owner)
2500 changed |= BSS_CHANGED_MU_GROUPS;
2502 switch (sdata->vif.type) {
2503 case NL80211_IFTYPE_STATION:
2504 changed |= BSS_CHANGED_ASSOC |
2505 BSS_CHANGED_ARP_FILTER |
2508 /* Re-send beacon info report to the driver */
2509 if (sdata->u.mgd.have_beacon)
2510 changed |= BSS_CHANGED_BEACON_INFO;
2512 if (sdata->vif.bss_conf.max_idle_period ||
2513 sdata->vif.bss_conf.protected_keep_alive)
2514 changed |= BSS_CHANGED_KEEP_ALIVE;
2517 ieee80211_bss_info_change_notify(sdata, changed);
2518 sdata_unlock(sdata);
2520 case NL80211_IFTYPE_OCB:
2521 changed |= BSS_CHANGED_OCB;
2522 ieee80211_bss_info_change_notify(sdata, changed);
2524 case NL80211_IFTYPE_ADHOC:
2525 changed |= BSS_CHANGED_IBSS;
2527 case NL80211_IFTYPE_AP:
2528 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
2530 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2531 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2532 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2533 changed |= BSS_CHANGED_FTM_RESPONDER;
2535 if (sdata->vif.type == NL80211_IFTYPE_AP) {
2536 changed |= BSS_CHANGED_AP_PROBE_RESP;
2538 if (rcu_access_pointer(sdata->u.ap.beacon))
2539 drv_start_ap(local, sdata);
2542 case NL80211_IFTYPE_MESH_POINT:
2543 if (sdata->vif.bss_conf.enable_beacon) {
2544 changed |= BSS_CHANGED_BEACON |
2545 BSS_CHANGED_BEACON_ENABLED;
2546 ieee80211_bss_info_change_notify(sdata, changed);
2549 case NL80211_IFTYPE_NAN:
2550 res = ieee80211_reconfig_nan(sdata);
2552 ieee80211_handle_reconfig_failure(local);
2556 case NL80211_IFTYPE_AP_VLAN:
2557 case NL80211_IFTYPE_MONITOR:
2558 case NL80211_IFTYPE_P2P_DEVICE:
2561 case NL80211_IFTYPE_UNSPECIFIED:
2562 case NUM_NL80211_IFTYPES:
2563 case NL80211_IFTYPE_P2P_CLIENT:
2564 case NL80211_IFTYPE_P2P_GO:
2565 case NL80211_IFTYPE_WDS:
2571 ieee80211_recalc_ps(local);
2574 * The sta might be in psm against the ap (e.g. because
2575 * this was the state before a hw restart), so we
2576 * explicitly send a null packet in order to make sure
2577 * it'll sync against the ap (and get out of psm).
2579 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2580 list_for_each_entry(sdata, &local->interfaces, list) {
2581 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2583 if (!sdata->u.mgd.associated)
2586 ieee80211_send_nullfunc(local, sdata, false);
2590 /* APs are now beaconing, add back stations */
2591 mutex_lock(&local->sta_mtx);
2592 list_for_each_entry(sta, &local->sta_list, list) {
2593 enum ieee80211_sta_state state;
2598 if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
2599 sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
2602 for (state = IEEE80211_STA_NOTEXIST;
2603 state < sta->sta_state; state++)
2604 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2607 mutex_unlock(&local->sta_mtx);
2610 list_for_each_entry(sdata, &local->interfaces, list)
2611 ieee80211_reenable_keys(sdata);
2613 /* Reconfigure sched scan if it was interrupted by FW restart */
2614 mutex_lock(&local->mtx);
2615 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2616 lockdep_is_held(&local->mtx));
2617 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2618 lockdep_is_held(&local->mtx));
2619 if (sched_scan_sdata && sched_scan_req)
2621 * Sched scan stopped, but we don't want to report it. Instead,
2622 * we're trying to reschedule. However, if more than one scan
2623 * plan was set, we cannot reschedule since we don't know which
2624 * scan plan was currently running (and some scan plans may have
2625 * already finished).
2627 if (sched_scan_req->n_scan_plans > 1 ||
2628 __ieee80211_request_sched_scan_start(sched_scan_sdata,
2630 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2631 RCU_INIT_POINTER(local->sched_scan_req, NULL);
2632 sched_scan_stopped = true;
2634 mutex_unlock(&local->mtx);
2636 if (sched_scan_stopped)
2637 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
2641 if (local->monitors == local->open_count && local->monitors > 0)
2642 ieee80211_add_virtual_monitor(local);
2645 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2646 * sessions can be established after a resume.
2648 * Also tear down aggregation sessions since reconfiguring
2649 * them in a hardware restart scenario is not easily done
2650 * right now, and the hardware will have lost information
2651 * about the sessions, but we and the AP still think they
2652 * are active. This is really a workaround though.
2654 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2655 mutex_lock(&local->sta_mtx);
2657 list_for_each_entry(sta, &local->sta_list, list) {
2658 if (!local->resuming)
2659 ieee80211_sta_tear_down_BA_sessions(
2660 sta, AGG_STOP_LOCAL_REQUEST);
2661 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
2664 mutex_unlock(&local->sta_mtx);
2668 * If this is for hw restart things are still running.
2669 * We may want to change that later, however.
2671 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2672 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2674 if (local->in_reconfig) {
2675 local->in_reconfig = false;
2678 /* Restart deferred ROCs */
2679 mutex_lock(&local->mtx);
2680 ieee80211_start_next_roc(local);
2681 mutex_unlock(&local->mtx);
2683 /* Requeue all works */
2684 list_for_each_entry(sdata, &local->interfaces, list)
2685 ieee80211_queue_work(&local->hw, &sdata->work);
2688 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
2689 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2696 /* first set suspended false, then resuming */
2697 local->suspended = false;
2699 local->resuming = false;
2701 ieee80211_flush_completed_scan(local, false);
2703 if (local->open_count && !reconfig_due_to_wowlan)
2704 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2706 list_for_each_entry(sdata, &local->interfaces, list) {
2707 if (!ieee80211_sdata_running(sdata))
2709 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2710 ieee80211_sta_restart(sdata);
2713 mod_timer(&local->sta_cleanup, jiffies + 1);
2721 void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2723 struct ieee80211_sub_if_data *sdata;
2724 struct ieee80211_local *local;
2725 struct ieee80211_key *key;
2730 sdata = vif_to_sdata(vif);
2731 local = sdata->local;
2733 if (WARN_ON(!local->resuming))
2736 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2739 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
2741 mutex_lock(&local->key_mtx);
2742 list_for_each_entry(key, &sdata->key_list, list)
2743 key->flags |= KEY_FLAG_TAINTED;
2744 mutex_unlock(&local->key_mtx);
2746 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2748 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
2750 struct ieee80211_local *local = sdata->local;
2751 struct ieee80211_chanctx_conf *chanctx_conf;
2752 struct ieee80211_chanctx *chanctx;
2754 mutex_lock(&local->chanctx_mtx);
2756 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2757 lockdep_is_held(&local->chanctx_mtx));
2760 * This function can be called from a work, thus it may be possible
2761 * that the chanctx_conf is removed (due to a disconnection, for
2763 * So nothing should be done in such case.
2768 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2769 ieee80211_recalc_smps_chanctx(local, chanctx);
2771 mutex_unlock(&local->chanctx_mtx);
2774 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2776 struct ieee80211_local *local = sdata->local;
2777 struct ieee80211_chanctx_conf *chanctx_conf;
2778 struct ieee80211_chanctx *chanctx;
2780 mutex_lock(&local->chanctx_mtx);
2782 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2783 lockdep_is_held(&local->chanctx_mtx));
2785 if (WARN_ON_ONCE(!chanctx_conf))
2788 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2789 ieee80211_recalc_chanctx_min_def(local, chanctx);
2791 mutex_unlock(&local->chanctx_mtx);
2794 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2796 size_t pos = offset;
2798 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2799 pos += 2 + ies[pos + 1];
2804 static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
2808 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
2810 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2814 * Scale up threshold values before storing it, as the RSSI averaging
2815 * algorithm uses a scaled up value as well. Change this scaling
2816 * factor if the RSSI averaging algorithm changes.
2818 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
2819 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
2822 void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
2826 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2828 WARN_ON(rssi_min_thold == rssi_max_thold ||
2829 rssi_min_thold > rssi_max_thold);
2831 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
2834 EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
2836 void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
2838 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2840 _ieee80211_enable_rssi_reports(sdata, 0, 0);
2842 EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
2844 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2849 *pos++ = WLAN_EID_HT_CAPABILITY;
2850 *pos++ = sizeof(struct ieee80211_ht_cap);
2851 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2853 /* capability flags */
2854 tmp = cpu_to_le16(cap);
2855 memcpy(pos, &tmp, sizeof(u16));
2858 /* AMPDU parameters */
2859 *pos++ = ht_cap->ampdu_factor |
2860 (ht_cap->ampdu_density <<
2861 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2864 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2865 pos += sizeof(ht_cap->mcs);
2867 /* extended capabilities */
2868 pos += sizeof(__le16);
2870 /* BF capabilities */
2871 pos += sizeof(__le32);
2873 /* antenna selection */
2879 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2884 *pos++ = WLAN_EID_VHT_CAPABILITY;
2885 *pos++ = sizeof(struct ieee80211_vht_cap);
2886 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
2888 /* capability flags */
2889 tmp = cpu_to_le32(cap);
2890 memcpy(pos, &tmp, sizeof(u32));
2894 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2895 pos += sizeof(vht_cap->vht_mcs);
2900 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
2902 const struct ieee80211_sta_he_cap *he_cap;
2903 struct ieee80211_supported_band *sband;
2906 sband = ieee80211_get_sband(sdata);
2910 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
2914 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2916 sizeof(he_cap->he_cap_elem) + n +
2917 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2918 he_cap->he_cap_elem.phy_cap_info);
2921 u8 *ieee80211_ie_build_he_cap(u8 *pos,
2922 const struct ieee80211_sta_he_cap *he_cap,
2929 /* Make sure we have place for the IE */
2931 * TODO: the 1 added is because this temporarily is under the EXTENSION
2932 * IE. Get rid of it when it moves.
2937 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2939 sizeof(he_cap->he_cap_elem) + n +
2940 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2941 he_cap->he_cap_elem.phy_cap_info);
2943 if ((end - pos) < ie_len)
2946 *pos++ = WLAN_EID_EXTENSION;
2947 pos++; /* We'll set the size later below */
2948 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
2951 memcpy(pos, &he_cap->he_cap_elem, sizeof(he_cap->he_cap_elem));
2952 pos += sizeof(he_cap->he_cap_elem);
2954 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
2957 /* Check if PPE Threshold should be present */
2958 if ((he_cap->he_cap_elem.phy_cap_info[6] &
2959 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2963 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
2964 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
2966 n = hweight8(he_cap->ppe_thres[0] &
2967 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
2968 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
2969 IEEE80211_PPE_THRES_NSS_POS));
2972 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
2975 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
2976 n = DIV_ROUND_UP(n, 8);
2978 /* Copy PPE Thresholds */
2979 memcpy(pos, &he_cap->ppe_thres, n);
2983 orig_pos[1] = (pos - orig_pos) - 2;
2987 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2988 struct sk_buff *skb)
2990 struct ieee80211_supported_band *sband;
2991 const struct ieee80211_sband_iftype_data *iftd;
2992 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
2996 if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy,
2997 BIT(NL80211_BAND_6GHZ),
2998 IEEE80211_CHAN_NO_HE))
3001 sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3003 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
3007 /* Check for device HE 6 GHz capability before adding element */
3008 if (!iftd->he_6ghz_capa.capa)
3011 cap = le16_to_cpu(iftd->he_6ghz_capa.capa);
3012 cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS;
3014 switch (sdata->smps_mode) {
3015 case IEEE80211_SMPS_AUTOMATIC:
3016 case IEEE80211_SMPS_NUM_MODES:
3019 case IEEE80211_SMPS_OFF:
3020 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
3021 IEEE80211_HE_6GHZ_CAP_SM_PS);
3023 case IEEE80211_SMPS_STATIC:
3024 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
3025 IEEE80211_HE_6GHZ_CAP_SM_PS);
3027 case IEEE80211_SMPS_DYNAMIC:
3028 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
3029 IEEE80211_HE_6GHZ_CAP_SM_PS);
3033 pos = skb_put(skb, 2 + 1 + sizeof(cap));
3034 ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap),
3035 pos + 2 + 1 + sizeof(cap));
3038 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
3039 const struct cfg80211_chan_def *chandef,
3040 u16 prot_mode, bool rifs_mode)
3042 struct ieee80211_ht_operation *ht_oper;
3043 /* Build HT Information */
3044 *pos++ = WLAN_EID_HT_OPERATION;
3045 *pos++ = sizeof(struct ieee80211_ht_operation);
3046 ht_oper = (struct ieee80211_ht_operation *)pos;
3047 ht_oper->primary_chan = ieee80211_frequency_to_channel(
3048 chandef->chan->center_freq);
3049 switch (chandef->width) {
3050 case NL80211_CHAN_WIDTH_160:
3051 case NL80211_CHAN_WIDTH_80P80:
3052 case NL80211_CHAN_WIDTH_80:
3053 case NL80211_CHAN_WIDTH_40:
3054 if (chandef->center_freq1 > chandef->chan->center_freq)
3055 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3057 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3060 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
3063 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
3064 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
3065 chandef->width != NL80211_CHAN_WIDTH_20)
3066 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
3069 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
3071 ht_oper->operation_mode = cpu_to_le16(prot_mode);
3072 ht_oper->stbc_param = 0x0000;
3074 /* It seems that Basic MCS set and Supported MCS set
3075 are identical for the first 10 bytes */
3076 memset(&ht_oper->basic_set, 0, 16);
3077 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
3079 return pos + sizeof(struct ieee80211_ht_operation);
3082 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
3083 const struct cfg80211_chan_def *chandef)
3085 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
3086 *pos++ = 3; /* IE length */
3087 /* New channel width */
3088 switch (chandef->width) {
3089 case NL80211_CHAN_WIDTH_80:
3090 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
3092 case NL80211_CHAN_WIDTH_160:
3093 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
3095 case NL80211_CHAN_WIDTH_80P80:
3096 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
3099 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
3102 /* new center frequency segment 0 */
3103 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
3104 /* new center frequency segment 1 */
3105 if (chandef->center_freq2)
3106 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
3111 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
3112 const struct cfg80211_chan_def *chandef)
3114 struct ieee80211_vht_operation *vht_oper;
3116 *pos++ = WLAN_EID_VHT_OPERATION;
3117 *pos++ = sizeof(struct ieee80211_vht_operation);
3118 vht_oper = (struct ieee80211_vht_operation *)pos;
3119 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
3120 chandef->center_freq1);
3121 if (chandef->center_freq2)
3122 vht_oper->center_freq_seg1_idx =
3123 ieee80211_frequency_to_channel(chandef->center_freq2);
3125 vht_oper->center_freq_seg1_idx = 0x00;
3127 switch (chandef->width) {
3128 case NL80211_CHAN_WIDTH_160:
3130 * Convert 160 MHz channel width to new style as interop
3133 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3134 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
3135 if (chandef->chan->center_freq < chandef->center_freq1)
3136 vht_oper->center_freq_seg0_idx -= 8;
3138 vht_oper->center_freq_seg0_idx += 8;
3140 case NL80211_CHAN_WIDTH_80P80:
3142 * Convert 80+80 MHz channel width to new style as interop
3145 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3147 case NL80211_CHAN_WIDTH_80:
3148 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3151 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
3155 /* don't require special VHT peer rates */
3156 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
3158 return pos + sizeof(struct ieee80211_vht_operation);
3161 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
3163 struct ieee80211_he_operation *he_oper;
3164 struct ieee80211_he_6ghz_oper *he_6ghz_op;
3166 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
3168 if (chandef->chan->band == NL80211_BAND_6GHZ)
3169 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
3171 *pos++ = WLAN_EID_EXTENSION;
3173 *pos++ = WLAN_EID_EXT_HE_OPERATION;
3176 he_oper_params |= u32_encode_bits(1023, /* disabled */
3177 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3178 he_oper_params |= u32_encode_bits(1,
3179 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
3180 he_oper_params |= u32_encode_bits(1,
3181 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3182 if (chandef->chan->band == NL80211_BAND_6GHZ)
3183 he_oper_params |= u32_encode_bits(1,
3184 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
3186 he_oper = (struct ieee80211_he_operation *)pos;
3187 he_oper->he_oper_params = cpu_to_le32(he_oper_params);
3189 /* don't require special HE peer rates */
3190 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
3191 pos += sizeof(struct ieee80211_he_operation);
3193 if (chandef->chan->band != NL80211_BAND_6GHZ)
3196 /* TODO add VHT operational */
3197 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
3198 he_6ghz_op->minrate = 6; /* 6 Mbps */
3199 he_6ghz_op->primary =
3200 ieee80211_frequency_to_channel(chandef->chan->center_freq);
3202 ieee80211_frequency_to_channel(chandef->center_freq1);
3203 if (chandef->center_freq2)
3205 ieee80211_frequency_to_channel(chandef->center_freq2);
3207 he_6ghz_op->ccfs1 = 0;
3209 switch (chandef->width) {
3210 case NL80211_CHAN_WIDTH_160:
3211 /* Convert 160 MHz channel width to new style as interop
3214 he_6ghz_op->control =
3215 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3216 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
3217 if (chandef->chan->center_freq < chandef->center_freq1)
3218 he_6ghz_op->ccfs0 -= 8;
3220 he_6ghz_op->ccfs0 += 8;
3222 case NL80211_CHAN_WIDTH_80P80:
3223 he_6ghz_op->control =
3224 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3226 case NL80211_CHAN_WIDTH_80:
3227 he_6ghz_op->control =
3228 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
3230 case NL80211_CHAN_WIDTH_40:
3231 he_6ghz_op->control =
3232 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
3235 he_6ghz_op->control =
3236 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
3240 pos += sizeof(struct ieee80211_he_6ghz_oper);
3246 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
3247 struct cfg80211_chan_def *chandef)
3249 enum nl80211_channel_type channel_type;
3254 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
3255 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3256 channel_type = NL80211_CHAN_HT20;
3258 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3259 channel_type = NL80211_CHAN_HT40PLUS;
3261 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3262 channel_type = NL80211_CHAN_HT40MINUS;
3265 channel_type = NL80211_CHAN_NO_HT;
3269 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
3273 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
3274 const struct ieee80211_vht_operation *oper,
3275 const struct ieee80211_ht_operation *htop,
3276 struct cfg80211_chan_def *chandef)
3278 struct cfg80211_chan_def new = *chandef;
3280 int ccfs0, ccfs1, ccfs2;
3283 bool support_80_80 = false;
3284 bool support_160 = false;
3285 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
3286 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
3287 u8 supp_chwidth = u32_get_bits(vht_cap_info,
3288 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
3293 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
3294 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
3295 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
3296 support_80_80 = ((vht_cap &
3297 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
3298 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
3299 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
3300 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
3301 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
3302 ccfs0 = oper->center_freq_seg0_idx;
3303 ccfs1 = oper->center_freq_seg1_idx;
3304 ccfs2 = (le16_to_cpu(htop->operation_mode) &
3305 IEEE80211_HT_OP_MODE_CCFS2_MASK)
3306 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
3310 /* if not supported, parse as though we didn't understand it */
3311 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3312 ext_nss_bw_supp = 0;
3315 * Cf. IEEE 802.11 Table 9-250
3317 * We really just consider that because it's inefficient to connect
3318 * at a higher bandwidth than we'll actually be able to use.
3320 switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
3324 support_160 = false;
3325 support_80_80 = false;
3328 support_80_80 = false;
3351 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3352 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
3354 switch (oper->chan_width) {
3355 case IEEE80211_VHT_CHANWIDTH_USE_HT:
3356 /* just use HT information directly */
3358 case IEEE80211_VHT_CHANWIDTH_80MHZ:
3359 new.width = NL80211_CHAN_WIDTH_80;
3360 new.center_freq1 = cf0;
3361 /* If needed, adjust based on the newer interop workaround. */
3365 diff = abs(ccf1 - ccf0);
3366 if ((diff == 8) && support_160) {
3367 new.width = NL80211_CHAN_WIDTH_160;
3368 new.center_freq1 = cf1;
3369 } else if ((diff > 8) && support_80_80) {
3370 new.width = NL80211_CHAN_WIDTH_80P80;
3371 new.center_freq2 = cf1;
3375 case IEEE80211_VHT_CHANWIDTH_160MHZ:
3376 /* deprecated encoding */
3377 new.width = NL80211_CHAN_WIDTH_160;
3378 new.center_freq1 = cf0;
3380 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3381 /* deprecated encoding */
3382 new.width = NL80211_CHAN_WIDTH_80P80;
3383 new.center_freq1 = cf0;
3384 new.center_freq2 = cf1;
3390 if (!cfg80211_chandef_valid(&new))
3397 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
3398 const struct ieee80211_he_operation *he_oper,
3399 struct cfg80211_chan_def *chandef)
3401 struct ieee80211_local *local = sdata->local;
3402 struct ieee80211_supported_band *sband;
3403 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3404 const struct ieee80211_sta_he_cap *he_cap;
3405 struct cfg80211_chan_def he_chandef = *chandef;
3406 const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3407 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3408 bool support_80_80, support_160;
3412 if (chandef->chan->band != NL80211_BAND_6GHZ)
3415 sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3417 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3419 sdata_info(sdata, "Missing iftype sband data/HE cap");
3423 he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
3426 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3429 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3433 "HE is not advertised on (on %d MHz), expect issues\n",
3434 chandef->chan->center_freq);
3438 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3440 if (!he_6ghz_oper) {
3442 "HE 6GHz operation missing (on %d MHz), expect issues\n",
3443 chandef->chan->center_freq);
3447 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3449 he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
3451 switch (u8_get_bits(he_6ghz_oper->control,
3452 IEEE80211_HE_6GHZ_OPER_CTRL_REG_INFO)) {
3453 case IEEE80211_6GHZ_CTRL_REG_LPI_AP:
3454 bss_conf->power_type = IEEE80211_REG_LPI_AP;
3456 case IEEE80211_6GHZ_CTRL_REG_SP_AP:
3457 bss_conf->power_type = IEEE80211_REG_SP_AP;
3460 bss_conf->power_type = IEEE80211_REG_UNSET_AP;
3464 switch (u8_get_bits(he_6ghz_oper->control,
3465 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3466 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3467 he_chandef.width = NL80211_CHAN_WIDTH_20;
3469 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3470 he_chandef.width = NL80211_CHAN_WIDTH_40;
3472 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3473 he_chandef.width = NL80211_CHAN_WIDTH_80;
3475 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3476 he_chandef.width = NL80211_CHAN_WIDTH_80;
3477 if (!he_6ghz_oper->ccfs1)
3479 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) {
3481 he_chandef.width = NL80211_CHAN_WIDTH_160;
3484 he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3489 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3490 he_chandef.center_freq1 =
3491 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3494 he_chandef.center_freq1 =
3495 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3497 if (support_80_80 || support_160)
3498 he_chandef.center_freq2 =
3499 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3503 if (!cfg80211_chandef_valid(&he_chandef)) {
3505 "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n",
3506 he_chandef.chan ? he_chandef.chan->center_freq : 0,
3508 he_chandef.center_freq1,
3509 he_chandef.center_freq2);
3513 *chandef = he_chandef;
3518 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
3519 struct cfg80211_chan_def *chandef)
3526 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) {
3527 case IEEE80211_S1G_CHANWIDTH_1MHZ:
3528 chandef->width = NL80211_CHAN_WIDTH_1;
3530 case IEEE80211_S1G_CHANWIDTH_2MHZ:
3531 chandef->width = NL80211_CHAN_WIDTH_2;
3533 case IEEE80211_S1G_CHANWIDTH_4MHZ:
3534 chandef->width = NL80211_CHAN_WIDTH_4;
3536 case IEEE80211_S1G_CHANWIDTH_8MHZ:
3537 chandef->width = NL80211_CHAN_WIDTH_8;
3539 case IEEE80211_S1G_CHANWIDTH_16MHZ:
3540 chandef->width = NL80211_CHAN_WIDTH_16;
3546 oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch,
3547 NL80211_BAND_S1GHZ);
3548 chandef->center_freq1 = KHZ_TO_MHZ(oper_freq);
3549 chandef->freq1_offset = oper_freq % 1000;
3554 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
3555 const struct ieee80211_supported_band *sband,
3556 const u8 *srates, int srates_len, u32 *rates)
3558 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
3559 int shift = ieee80211_chandef_get_shift(chandef);
3560 struct ieee80211_rate *br;
3561 int brate, rate, i, j, count = 0;
3565 for (i = 0; i < srates_len; i++) {
3566 rate = srates[i] & 0x7f;
3568 for (j = 0; j < sband->n_bitrates; j++) {
3569 br = &sband->bitrates[j];
3570 if ((rate_flags & br->flags) != rate_flags)
3573 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3574 if (brate == rate) {
3584 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
3585 struct sk_buff *skb, bool need_basic,
3586 enum nl80211_band band)
3588 struct ieee80211_local *local = sdata->local;
3589 struct ieee80211_supported_band *sband;
3592 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3595 shift = ieee80211_vif_get_shift(&sdata->vif);
3596 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3597 sband = local->hw.wiphy->bands[band];
3599 for (i = 0; i < sband->n_bitrates; i++) {
3600 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3607 if (skb_tailroom(skb) < rates + 2)
3610 pos = skb_put(skb, rates + 2);
3611 *pos++ = WLAN_EID_SUPP_RATES;
3613 for (i = 0; i < rates; i++) {
3615 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3618 if (need_basic && basic_rates & BIT(i))
3620 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3622 *pos++ = basic | (u8) rate;
3628 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
3629 struct sk_buff *skb, bool need_basic,
3630 enum nl80211_band band)
3632 struct ieee80211_local *local = sdata->local;
3633 struct ieee80211_supported_band *sband;
3635 u8 i, exrates, *pos;
3636 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3639 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3640 shift = ieee80211_vif_get_shift(&sdata->vif);
3642 sband = local->hw.wiphy->bands[band];
3644 for (i = 0; i < sband->n_bitrates; i++) {
3645 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3655 if (skb_tailroom(skb) < exrates + 2)
3659 pos = skb_put(skb, exrates + 2);
3660 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3662 for (i = 8; i < sband->n_bitrates; i++) {
3664 if ((rate_flags & sband->bitrates[i].flags)
3667 if (need_basic && basic_rates & BIT(i))
3669 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3671 *pos++ = basic | (u8) rate;
3677 int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3679 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3680 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3682 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
3683 /* non-managed type inferfaces */
3686 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3688 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
3690 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3695 /* TODO: consider rx_highest */
3697 if (mcs->rx_mask[3])
3699 if (mcs->rx_mask[2])
3701 if (mcs->rx_mask[1])
3707 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3708 * @local: mac80211 hw info struct
3709 * @status: RX status
3710 * @mpdu_len: total MPDU length (including FCS)
3711 * @mpdu_offset: offset into MPDU to calculate timestamp at
3713 * This function calculates the RX timestamp at the given MPDU offset, taking
3714 * into account what the RX timestamp was. An offset of 0 will just normalize
3715 * the timestamp to TSF at beginning of MPDU reception.
3717 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3718 struct ieee80211_rx_status *status,
3719 unsigned int mpdu_len,
3720 unsigned int mpdu_offset)
3722 u64 ts = status->mactime;
3723 struct rate_info ri;
3727 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3730 memset(&ri, 0, sizeof(ri));
3734 /* Fill cfg80211 rate info */
3735 switch (status->encoding) {
3737 ri.flags |= RATE_INFO_FLAGS_HE_MCS;
3738 ri.mcs = status->rate_idx;
3739 ri.nss = status->nss;
3740 ri.he_ru_alloc = status->he_ru;
3741 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3742 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3745 * See P802.11ax_D6.0, section 27.3.4 for
3748 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3754 * For HE MU PPDU, add the HE-SIG-B.
3755 * For HE ER PPDU, add 8us for the HE-SIG-A.
3756 * For HE TB PPDU, add 4us for the HE-STF.
3757 * Add the HE-LTF durations - variable.
3763 ri.mcs = status->rate_idx;
3764 ri.flags |= RATE_INFO_FLAGS_MCS;
3765 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3766 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3769 * See P802.11REVmd_D3.0, section 19.3.2 for
3772 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3774 if (status->enc_flags & RX_ENC_FLAG_HT_GF)
3780 * Add Data HT-LTFs per streams
3781 * TODO: add Extension HT-LTFs, 4us per LTF
3783 n_ltf = ((ri.mcs >> 3) & 3) + 1;
3784 n_ltf = n_ltf == 3 ? 4 : n_ltf;
3790 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3791 ri.mcs = status->rate_idx;
3792 ri.nss = status->nss;
3793 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3794 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3797 * See P802.11REVmd_D3.0, section 21.3.2 for
3800 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3805 * Add VHT-LTFs per streams
3807 n_ltf = (ri.nss != 1) && (ri.nss % 2) ?
3808 ri.nss + 1 : ri.nss;
3816 case RX_ENC_LEGACY: {
3817 struct ieee80211_supported_band *sband;
3821 switch (status->bw) {
3822 case RATE_INFO_BW_10:
3825 case RATE_INFO_BW_5:
3830 sband = local->hw.wiphy->bands[status->band];
3831 bitrate = sband->bitrates[status->rate_idx].bitrate;
3832 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
3834 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3835 if (status->band == NL80211_BAND_5GHZ) {
3838 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
3848 rate = cfg80211_calculate_bitrate(&ri);
3849 if (WARN_ONCE(!rate,
3850 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
3851 (unsigned long long)status->flag, status->rate_idx,
3855 /* rewind from end of MPDU */
3856 if (status->flag & RX_FLAG_MACTIME_END)
3857 ts -= mpdu_len * 8 * 10 / rate;
3859 ts += mpdu_offset * 8 * 10 / rate;
3864 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
3866 struct ieee80211_sub_if_data *sdata;
3867 struct cfg80211_chan_def chandef;
3869 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
3870 lockdep_assert_wiphy(local->hw.wiphy);
3872 mutex_lock(&local->mtx);
3873 list_for_each_entry(sdata, &local->interfaces, list) {
3874 /* it might be waiting for the local->mtx, but then
3875 * by the time it gets it, sdata->wdev.cac_started
3876 * will no longer be true
3878 cancel_delayed_work(&sdata->dfs_cac_timer_work);
3880 if (sdata->wdev.cac_started) {
3881 chandef = sdata->vif.bss_conf.chandef;
3882 ieee80211_vif_release_channel(sdata);
3883 cfg80211_cac_event(sdata->dev,
3885 NL80211_RADAR_CAC_ABORTED,
3889 mutex_unlock(&local->mtx);
3892 void ieee80211_dfs_radar_detected_work(struct work_struct *work)
3894 struct ieee80211_local *local =
3895 container_of(work, struct ieee80211_local, radar_detected_work);
3896 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
3897 struct ieee80211_chanctx *ctx;
3898 int num_chanctx = 0;
3900 mutex_lock(&local->chanctx_mtx);
3901 list_for_each_entry(ctx, &local->chanctx_list, list) {
3902 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
3906 chandef = ctx->conf.def;
3908 mutex_unlock(&local->chanctx_mtx);
3910 wiphy_lock(local->hw.wiphy);
3911 ieee80211_dfs_cac_cancel(local);
3912 wiphy_unlock(local->hw.wiphy);
3914 if (num_chanctx > 1)
3915 /* XXX: multi-channel is not supported yet */
3918 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
3921 void ieee80211_radar_detected(struct ieee80211_hw *hw)
3923 struct ieee80211_local *local = hw_to_local(hw);
3925 trace_api_radar_detected(local);
3927 schedule_work(&local->radar_detected_work);
3929 EXPORT_SYMBOL(ieee80211_radar_detected);
3931 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
3937 case NL80211_CHAN_WIDTH_20:
3938 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3939 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3941 case NL80211_CHAN_WIDTH_40:
3942 c->width = NL80211_CHAN_WIDTH_20;
3943 c->center_freq1 = c->chan->center_freq;
3944 ret = IEEE80211_STA_DISABLE_40MHZ |
3945 IEEE80211_STA_DISABLE_VHT;
3947 case NL80211_CHAN_WIDTH_80:
3948 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
3952 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
3953 c->width = NL80211_CHAN_WIDTH_40;
3954 ret = IEEE80211_STA_DISABLE_VHT;
3956 case NL80211_CHAN_WIDTH_80P80:
3957 c->center_freq2 = 0;
3958 c->width = NL80211_CHAN_WIDTH_80;
3959 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3960 IEEE80211_STA_DISABLE_160MHZ;
3962 case NL80211_CHAN_WIDTH_160:
3964 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
3967 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
3968 c->width = NL80211_CHAN_WIDTH_80;
3969 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3970 IEEE80211_STA_DISABLE_160MHZ;
3973 case NL80211_CHAN_WIDTH_20_NOHT:
3975 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3976 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3978 case NL80211_CHAN_WIDTH_1:
3979 case NL80211_CHAN_WIDTH_2:
3980 case NL80211_CHAN_WIDTH_4:
3981 case NL80211_CHAN_WIDTH_8:
3982 case NL80211_CHAN_WIDTH_16:
3983 case NL80211_CHAN_WIDTH_5:
3984 case NL80211_CHAN_WIDTH_10:
3987 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3991 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
3997 * Returns true if smps_mode_new is strictly more restrictive than
4000 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
4001 enum ieee80211_smps_mode smps_mode_new)
4003 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
4004 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
4007 switch (smps_mode_old) {
4008 case IEEE80211_SMPS_STATIC:
4010 case IEEE80211_SMPS_DYNAMIC:
4011 return smps_mode_new == IEEE80211_SMPS_STATIC;
4012 case IEEE80211_SMPS_OFF:
4013 return smps_mode_new != IEEE80211_SMPS_OFF;
4021 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
4022 struct cfg80211_csa_settings *csa_settings)
4024 struct sk_buff *skb;
4025 struct ieee80211_mgmt *mgmt;
4026 struct ieee80211_local *local = sdata->local;
4028 int hdr_len = offsetofend(struct ieee80211_mgmt,
4029 u.action.u.chan_switch);
4032 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
4033 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
4036 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
4037 5 + /* channel switch announcement element */
4038 3 + /* secondary channel offset element */
4039 5 + /* wide bandwidth channel switch announcement */
4040 8); /* mesh channel switch parameters element */
4044 skb_reserve(skb, local->tx_headroom);
4045 mgmt = skb_put_zero(skb, hdr_len);
4046 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
4047 IEEE80211_STYPE_ACTION);
4049 eth_broadcast_addr(mgmt->da);
4050 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
4051 if (ieee80211_vif_is_mesh(&sdata->vif)) {
4052 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
4054 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
4055 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
4057 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
4058 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
4059 pos = skb_put(skb, 5);
4060 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
4061 *pos++ = 3; /* IE length */
4062 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
4063 freq = csa_settings->chandef.chan->center_freq;
4064 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
4065 *pos++ = csa_settings->count; /* count */
4067 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
4068 enum nl80211_channel_type ch_type;
4071 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
4072 *pos++ = 1; /* IE length */
4073 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
4074 if (ch_type == NL80211_CHAN_HT40PLUS)
4075 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
4077 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
4080 if (ieee80211_vif_is_mesh(&sdata->vif)) {
4081 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
4084 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
4085 *pos++ = 6; /* IE length */
4086 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
4087 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
4088 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
4089 *pos++ |= csa_settings->block_tx ?
4090 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
4091 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
4093 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
4097 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
4098 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
4099 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
4101 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
4104 ieee80211_tx_skb(sdata, skb);
4108 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
4110 return !(cs == NULL || cs->cipher == 0 ||
4111 cs->hdr_len < cs->pn_len + cs->pn_off ||
4112 cs->hdr_len <= cs->key_idx_off ||
4113 cs->key_idx_shift > 7 ||
4114 cs->key_idx_mask == 0);
4117 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
4121 /* Ensure we have enough iftype bitmap space for all iftype values */
4122 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
4124 for (i = 0; i < n; i++)
4125 if (!ieee80211_cs_valid(&cs[i]))
4131 const struct ieee80211_cipher_scheme *
4132 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
4133 enum nl80211_iftype iftype)
4135 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
4136 int n = local->hw.n_cipher_schemes;
4138 const struct ieee80211_cipher_scheme *cs = NULL;
4140 for (i = 0; i < n; i++) {
4141 if (l[i].cipher == cipher) {
4147 if (!cs || !(cs->iftype & BIT(iftype)))
4153 int ieee80211_cs_headroom(struct ieee80211_local *local,
4154 struct cfg80211_crypto_settings *crypto,
4155 enum nl80211_iftype iftype)
4157 const struct ieee80211_cipher_scheme *cs;
4158 int headroom = IEEE80211_ENCRYPT_HEADROOM;
4161 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
4162 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
4165 if (cs && headroom < cs->hdr_len)
4166 headroom = cs->hdr_len;
4169 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
4170 if (cs && headroom < cs->hdr_len)
4171 headroom = cs->hdr_len;
4177 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
4179 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
4186 if (data->count[i] == 1)
4189 if (data->desc[i].interval == 0)
4192 /* End time is in the past, check for repetitions */
4193 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
4194 if (data->count[i] < 255) {
4195 if (data->count[i] <= skip) {
4200 data->count[i] -= skip;
4203 data->desc[i].start += skip * data->desc[i].interval;
4209 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
4215 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4218 if (!data->count[i])
4221 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
4224 cur = data->desc[i].start - tsf;
4228 cur = data->desc[i].start + data->desc[i].duration - tsf;
4237 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
4242 * arbitrary limit, used to avoid infinite loops when combined NoA
4243 * descriptors cover the full time period.
4247 ieee80211_extend_absent_time(data, tsf, &offset);
4249 if (!ieee80211_extend_absent_time(data, tsf, &offset))
4253 } while (tries < max_tries);
4258 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
4260 u32 next_offset = BIT(31) - 1;
4264 data->has_next_tsf = false;
4265 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4268 if (!data->count[i])
4271 ieee80211_extend_noa_desc(data, tsf, i);
4272 start = data->desc[i].start - tsf;
4274 data->absent |= BIT(i);
4276 if (next_offset > start)
4277 next_offset = start;
4279 data->has_next_tsf = true;
4283 next_offset = ieee80211_get_noa_absent_time(data, tsf);
4285 data->next_tsf = tsf + next_offset;
4287 EXPORT_SYMBOL(ieee80211_update_p2p_noa);
4289 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
4290 struct ieee80211_noa_data *data, u32 tsf)
4295 memset(data, 0, sizeof(*data));
4297 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4298 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
4300 if (!desc->count || !desc->duration)
4303 data->count[i] = desc->count;
4304 data->desc[i].start = le32_to_cpu(desc->start_time);
4305 data->desc[i].duration = le32_to_cpu(desc->duration);
4306 data->desc[i].interval = le32_to_cpu(desc->interval);
4308 if (data->count[i] > 1 &&
4309 data->desc[i].interval < data->desc[i].duration)
4312 ieee80211_extend_noa_desc(data, tsf, i);
4317 ieee80211_update_p2p_noa(data, tsf);
4321 EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
4323 void ieee80211_recalc_dtim(struct ieee80211_local *local,
4324 struct ieee80211_sub_if_data *sdata)
4326 u64 tsf = drv_get_tsf(local, sdata);
4328 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
4329 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
4333 if (tsf == -1ULL || !beacon_int || !dtim_period)
4336 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4337 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
4341 ps = &sdata->bss->ps;
4342 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
4343 ps = &sdata->u.mesh.ps;
4349 * actually finds last dtim_count, mac80211 will update in
4350 * __beacon_add_tim().
4351 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
4353 do_div(tsf, beacon_int);
4354 bcns_from_dtim = do_div(tsf, dtim_period);
4355 /* just had a DTIM */
4356 if (!bcns_from_dtim)
4359 dtim_count = dtim_period - bcns_from_dtim;
4361 ps->dtim_count = dtim_count;
4364 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
4365 struct ieee80211_chanctx *ctx)
4367 struct ieee80211_sub_if_data *sdata;
4368 u8 radar_detect = 0;
4370 lockdep_assert_held(&local->chanctx_mtx);
4372 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
4375 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
4376 if (sdata->reserved_radar_required)
4377 radar_detect |= BIT(sdata->reserved_chandef.width);
4380 * An in-place reservation context should not have any assigned vifs
4381 * until it replaces the other context.
4383 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
4384 !list_empty(&ctx->assigned_vifs));
4386 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
4387 if (sdata->radar_required)
4388 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
4390 return radar_detect;
4393 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4394 const struct cfg80211_chan_def *chandef,
4395 enum ieee80211_chanctx_mode chanmode,
4398 struct ieee80211_local *local = sdata->local;
4399 struct ieee80211_sub_if_data *sdata_iter;
4400 enum nl80211_iftype iftype = sdata->wdev.iftype;
4401 struct ieee80211_chanctx *ctx;
4403 struct iface_combination_params params = {
4404 .radar_detect = radar_detect,
4407 lockdep_assert_held(&local->chanctx_mtx);
4409 if (WARN_ON(hweight32(radar_detect) > 1))
4412 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4416 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4419 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4420 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4422 * always passing this is harmless, since it'll be the
4423 * same value that cfg80211 finds if it finds the same
4424 * interface ... and that's always allowed
4426 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4429 /* Always allow software iftypes */
4430 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
4437 params.num_different_channels = 1;
4439 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
4440 params.iftype_num[iftype] = 1;
4442 list_for_each_entry(ctx, &local->chanctx_list, list) {
4443 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4445 params.radar_detect |=
4446 ieee80211_chanctx_radar_detect(local, ctx);
4447 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
4448 params.num_different_channels++;
4451 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4452 cfg80211_chandef_compatible(chandef,
4455 params.num_different_channels++;
4458 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4459 struct wireless_dev *wdev_iter;
4461 wdev_iter = &sdata_iter->wdev;
4463 if (sdata_iter == sdata ||
4464 !ieee80211_sdata_running(sdata_iter) ||
4465 cfg80211_iftype_allowed(local->hw.wiphy,
4466 wdev_iter->iftype, 0, 1))
4469 params.iftype_num[wdev_iter->iftype]++;
4473 if (total == 1 && !params.radar_detect)
4476 return cfg80211_check_combinations(local->hw.wiphy, ¶ms);
4480 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4483 u32 *max_num_different_channels = data;
4485 *max_num_different_channels = max(*max_num_different_channels,
4486 c->num_different_channels);
4489 int ieee80211_max_num_channels(struct ieee80211_local *local)
4491 struct ieee80211_sub_if_data *sdata;
4492 struct ieee80211_chanctx *ctx;
4493 u32 max_num_different_channels = 1;
4495 struct iface_combination_params params = {0};
4497 lockdep_assert_held(&local->chanctx_mtx);
4499 list_for_each_entry(ctx, &local->chanctx_list, list) {
4500 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4503 params.num_different_channels++;
4505 params.radar_detect |=
4506 ieee80211_chanctx_radar_detect(local, ctx);
4509 list_for_each_entry_rcu(sdata, &local->interfaces, list)
4510 params.iftype_num[sdata->wdev.iftype]++;
4512 err = cfg80211_iter_combinations(local->hw.wiphy, ¶ms,
4513 ieee80211_iter_max_chans,
4514 &max_num_different_channels);
4518 return max_num_different_channels;
4521 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
4522 struct ieee80211_sta_s1g_cap *caps,
4523 struct sk_buff *skb)
4525 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4526 struct ieee80211_s1g_cap s1g_capab;
4530 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
4536 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap));
4537 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs));
4539 /* override the capability info */
4540 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
4541 u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
4543 s1g_capab.capab_info[i] &= ~mask;
4544 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask;
4547 /* then MCS and NSS set */
4548 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
4549 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
4551 s1g_capab.supp_mcs_nss[i] &= ~mask;
4552 s1g_capab.supp_mcs_nss[i] |=
4553 ifmgd->s1g_capa.supp_mcs_nss[i] & mask;
4556 pos = skb_put(skb, 2 + sizeof(s1g_capab));
4557 *pos++ = WLAN_EID_S1G_CAPABILITIES;
4558 *pos++ = sizeof(s1g_capab);
4560 memcpy(pos, &s1g_capab, sizeof(s1g_capab));
4563 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
4564 struct sk_buff *skb)
4566 u8 *pos = skb_put(skb, 3);
4568 *pos++ = WLAN_EID_AID_REQUEST;
4573 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4575 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4576 *buf++ = 7; /* len */
4577 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4580 *buf++ = 2; /* WME */
4581 *buf++ = 0; /* WME info */
4582 *buf++ = 1; /* WME ver */
4583 *buf++ = qosinfo; /* U-APSD no in use */
4588 void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4589 unsigned long *frame_cnt,
4590 unsigned long *byte_cnt)
4592 struct txq_info *txqi = to_txq_info(txq);
4593 u32 frag_cnt = 0, frag_bytes = 0;
4594 struct sk_buff *skb;
4596 skb_queue_walk(&txqi->frags, skb) {
4598 frag_bytes += skb->len;
4602 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
4605 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
4607 EXPORT_SYMBOL(ieee80211_txq_get_depth);
4609 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4610 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4611 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4612 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4613 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
4616 u16 ieee80211_encode_usf(int listen_interval)
4618 static const int listen_int_usf[] = { 1, 10, 1000, 10000 };
4621 /* find greatest USF */
4622 while (usf < IEEE80211_MAX_USF) {
4623 if (listen_interval % listen_int_usf[usf + 1])
4627 ui = listen_interval / listen_int_usf[usf];
4629 /* error if there is a remainder. Should've been checked by user */
4630 WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
4631 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
4632 FIELD_PREP(LISTEN_INT_UI, ui);
4634 return (u16) listen_interval;