1 // SPDX-License-Identifier: GPL-2.0-only
3 * BSS client mode implementation
4 * Copyright 2003-2008, Jouni Malinen <j@w1.fi>
5 * Copyright 2004, Instant802 Networks, Inc.
6 * Copyright 2005, Devicescape Software, Inc.
7 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
8 * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
9 * Copyright 2013-2014 Intel Mobile Communications GmbH
10 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH
11 * Copyright (C) 2018 - 2020 Intel Corporation
14 #include <linux/delay.h>
15 #include <linux/fips.h>
16 #include <linux/if_ether.h>
17 #include <linux/skbuff.h>
18 #include <linux/if_arp.h>
19 #include <linux/etherdevice.h>
20 #include <linux/moduleparam.h>
21 #include <linux/rtnetlink.h>
22 #include <linux/crc32.h>
23 #include <linux/slab.h>
24 #include <linux/export.h>
25 #include <net/mac80211.h>
26 #include <asm/unaligned.h>
28 #include "ieee80211_i.h"
29 #include "driver-ops.h"
32 #include "fils_aead.h"
34 #define IEEE80211_AUTH_TIMEOUT (HZ / 5)
35 #define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2)
36 #define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10)
37 #define IEEE80211_AUTH_TIMEOUT_SAE (HZ * 2)
38 #define IEEE80211_AUTH_MAX_TRIES 3
39 #define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
40 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
41 #define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2)
42 #define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
43 #define IEEE80211_ASSOC_MAX_TRIES 3
45 static int max_nullfunc_tries = 2;
46 module_param(max_nullfunc_tries, int, 0644);
47 MODULE_PARM_DESC(max_nullfunc_tries,
48 "Maximum nullfunc tx tries before disconnecting (reason 4).");
50 static int max_probe_tries = 5;
51 module_param(max_probe_tries, int, 0644);
52 MODULE_PARM_DESC(max_probe_tries,
53 "Maximum probe tries before disconnecting (reason 4).");
56 * Beacon loss timeout is calculated as N frames times the
57 * advertised beacon interval. This may need to be somewhat
58 * higher than what hardware might detect to account for
59 * delays in the host processing frames. But since we also
60 * probe on beacon miss before declaring the connection lost
61 * default to what we want.
63 static int beacon_loss_count = 7;
64 module_param(beacon_loss_count, int, 0644);
65 MODULE_PARM_DESC(beacon_loss_count,
66 "Number of beacon intervals before we decide beacon was lost.");
69 * Time the connection can be idle before we probe
70 * it to see if we can still talk to the AP.
72 #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
74 * Time we wait for a probe response after sending
75 * a probe request because of beacon loss or for
76 * checking the connection still works.
78 static int probe_wait_ms = 500;
79 module_param(probe_wait_ms, int, 0644);
80 MODULE_PARM_DESC(probe_wait_ms,
81 "Maximum time(ms) to wait for probe response"
82 " before disconnecting (reason 4).");
85 * How many Beacon frames need to have been used in average signal strength
86 * before starting to indicate signal change events.
88 #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
91 * We can have multiple work items (and connection probing)
92 * scheduling this timer, but we need to take care to only
93 * reschedule it when it should fire _earlier_ than it was
94 * asked for before, or if it's not pending right now. This
95 * function ensures that. Note that it then is required to
96 * run this function for all timeouts after the first one
97 * has happened -- the work that runs from this timer will
100 static void run_again(struct ieee80211_sub_if_data *sdata,
101 unsigned long timeout)
103 sdata_assert_lock(sdata);
105 if (!timer_pending(&sdata->u.mgd.timer) ||
106 time_before(timeout, sdata->u.mgd.timer.expires))
107 mod_timer(&sdata->u.mgd.timer, timeout);
110 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
112 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
115 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
118 mod_timer(&sdata->u.mgd.bcn_mon_timer,
119 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
122 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
124 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
126 if (unlikely(!ifmgd->associated))
129 if (ifmgd->probe_send_count)
130 ifmgd->probe_send_count = 0;
132 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
135 mod_timer(&ifmgd->conn_mon_timer,
136 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
139 static int ecw2cw(int ecw)
141 return (1 << ecw) - 1;
145 ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
146 struct ieee80211_supported_band *sband,
147 struct ieee80211_channel *channel,
149 const struct ieee80211_ht_operation *ht_oper,
150 const struct ieee80211_vht_operation *vht_oper,
151 const struct ieee80211_he_operation *he_oper,
152 const struct ieee80211_s1g_oper_ie *s1g_oper,
153 struct cfg80211_chan_def *chandef, bool tracking)
155 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
156 struct cfg80211_chan_def vht_chandef;
157 struct ieee80211_sta_ht_cap sta_ht_cap;
160 memset(chandef, 0, sizeof(struct cfg80211_chan_def));
161 chandef->chan = channel;
162 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
163 chandef->center_freq1 = channel->center_freq;
164 chandef->freq1_offset = channel->freq_offset;
166 if (channel->band == NL80211_BAND_6GHZ) {
167 if (!ieee80211_chandef_he_6ghz_oper(sdata, he_oper, chandef))
168 ret = IEEE80211_STA_DISABLE_HT |
169 IEEE80211_STA_DISABLE_VHT |
170 IEEE80211_STA_DISABLE_HE;
173 vht_chandef = *chandef;
175 } else if (sband->band == NL80211_BAND_S1GHZ) {
176 if (!ieee80211_chandef_s1g_oper(s1g_oper, chandef)) {
178 "Missing S1G Operation Element? Trying operating == primary\n");
179 chandef->width = ieee80211_s1g_channel_width(channel);
182 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_40MHZ |
183 IEEE80211_STA_DISABLE_VHT |
184 IEEE80211_STA_DISABLE_80P80MHZ |
185 IEEE80211_STA_DISABLE_160MHZ;
189 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
190 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
192 if (!ht_oper || !sta_ht_cap.ht_supported) {
193 ret = IEEE80211_STA_DISABLE_HT |
194 IEEE80211_STA_DISABLE_VHT |
195 IEEE80211_STA_DISABLE_HE;
199 chandef->width = NL80211_CHAN_WIDTH_20;
201 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
203 /* check that channel matches the right operating channel */
204 if (!tracking && channel->center_freq != ht_cfreq) {
206 * It's possible that some APs are confused here;
207 * Netgear WNDR3700 sometimes reports 4 higher than
208 * the actual channel in association responses, but
209 * since we look at probe response/beacon data here
213 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
214 channel->center_freq, ht_cfreq,
215 ht_oper->primary_chan, channel->band);
216 ret = IEEE80211_STA_DISABLE_HT |
217 IEEE80211_STA_DISABLE_VHT |
218 IEEE80211_STA_DISABLE_HE;
222 /* check 40 MHz support, if we have it */
223 if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
224 ieee80211_chandef_ht_oper(ht_oper, chandef);
226 /* 40 MHz (and 80 MHz) must be supported for VHT */
227 ret = IEEE80211_STA_DISABLE_VHT;
228 /* also mark 40 MHz disabled */
229 ret |= IEEE80211_STA_DISABLE_40MHZ;
233 if (!vht_oper || !sband->vht_cap.vht_supported) {
234 ret = IEEE80211_STA_DISABLE_VHT;
238 vht_chandef = *chandef;
239 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && he_oper &&
240 (le32_to_cpu(he_oper->he_oper_params) &
241 IEEE80211_HE_OPERATION_VHT_OPER_INFO)) {
242 struct ieee80211_vht_operation he_oper_vht_cap;
245 * Set only first 3 bytes (other 2 aren't used in
246 * ieee80211_chandef_vht_oper() anyway)
248 memcpy(&he_oper_vht_cap, he_oper->optional, 3);
249 he_oper_vht_cap.basic_mcs_set = cpu_to_le16(0);
251 if (!ieee80211_chandef_vht_oper(&sdata->local->hw, vht_cap_info,
252 &he_oper_vht_cap, ht_oper,
254 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
256 "HE AP VHT information is invalid, disable HE\n");
257 ret = IEEE80211_STA_DISABLE_HE;
260 } else if (!ieee80211_chandef_vht_oper(&sdata->local->hw,
264 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
266 "AP VHT information is invalid, disable VHT\n");
267 ret = IEEE80211_STA_DISABLE_VHT;
271 if (!cfg80211_chandef_valid(&vht_chandef)) {
272 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
274 "AP VHT information is invalid, disable VHT\n");
275 ret = IEEE80211_STA_DISABLE_VHT;
279 if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
284 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
285 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
287 "AP VHT information doesn't match HT, disable VHT\n");
288 ret = IEEE80211_STA_DISABLE_VHT;
292 *chandef = vht_chandef;
298 * When tracking the current AP, don't do any further checks if the
299 * new chandef is identical to the one we're currently using for the
300 * connection. This keeps us from playing ping-pong with regulatory,
301 * without it the following can happen (for example):
302 * - connect to an AP with 80 MHz, world regdom allows 80 MHz
303 * - AP advertises regdom US
304 * - CRDA loads regdom US with 80 MHz prohibited (old database)
305 * - the code below detects an unsupported channel, downgrades, and
306 * we disconnect from the AP in the caller
307 * - disconnect causes CRDA to reload world regdomain and the game
309 * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881)
311 * It seems possible that there are still scenarios with CSA or real
312 * bandwidth changes where a this could happen, but those cases are
313 * less common and wouldn't completely prevent using the AP.
316 cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef))
319 /* don't print the message below for VHT mismatch if VHT is disabled */
320 if (ret & IEEE80211_STA_DISABLE_VHT)
321 vht_chandef = *chandef;
324 * Ignore the DISABLED flag when we're already connected and only
325 * tracking the APs beacon for bandwidth changes - otherwise we
326 * might get disconnected here if we connect to an AP, update our
327 * regulatory information based on the AP's country IE and the
328 * information we have is wrong/outdated and disables the channel
329 * that we're actually using for the connection to the AP.
331 while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
333 IEEE80211_CHAN_DISABLED)) {
334 if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
335 ret = IEEE80211_STA_DISABLE_HT |
336 IEEE80211_STA_DISABLE_VHT |
337 IEEE80211_STA_DISABLE_HE;
341 ret |= ieee80211_chandef_downgrade(chandef);
344 if (!he_oper || !cfg80211_chandef_usable(sdata->wdev.wiphy, chandef,
345 IEEE80211_CHAN_NO_HE))
346 ret |= IEEE80211_STA_DISABLE_HE;
348 if (chandef->width != vht_chandef.width && !tracking)
350 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
352 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
356 static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
357 struct sta_info *sta,
358 const struct ieee80211_ht_cap *ht_cap,
359 const struct ieee80211_vht_cap *vht_cap,
360 const struct ieee80211_ht_operation *ht_oper,
361 const struct ieee80211_vht_operation *vht_oper,
362 const struct ieee80211_he_operation *he_oper,
363 const struct ieee80211_s1g_oper_ie *s1g_oper,
364 const u8 *bssid, u32 *changed)
366 struct ieee80211_local *local = sdata->local;
367 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
368 struct ieee80211_channel *chan = sdata->vif.bss_conf.chandef.chan;
369 struct ieee80211_supported_band *sband =
370 local->hw.wiphy->bands[chan->band];
371 struct cfg80211_chan_def chandef;
374 enum ieee80211_sta_rx_bandwidth new_sta_bw;
375 u32 vht_cap_info = 0;
378 /* if HT was/is disabled, don't track any bandwidth changes */
379 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
382 /* don't check VHT if we associated as non-VHT station */
383 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
386 /* don't check HE if we associated as non-HE station */
387 if (ifmgd->flags & IEEE80211_STA_DISABLE_HE ||
388 !ieee80211_get_he_sta_cap(sband))
391 if (WARN_ON_ONCE(!sta))
395 * if bss configuration changed store the new one -
396 * this may be applicable even if channel is identical
398 ht_opmode = le16_to_cpu(ht_oper->operation_mode);
399 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
400 *changed |= BSS_CHANGED_HT;
401 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
405 vht_cap_info = le32_to_cpu(vht_cap->vht_cap_info);
407 /* calculate new channel (type) based on HT/VHT/HE operation IEs */
408 flags = ieee80211_determine_chantype(sdata, sband, chan, vht_cap_info,
409 ht_oper, vht_oper, he_oper,
410 s1g_oper, &chandef, true);
413 * Downgrade the new channel if we associated with restricted
414 * capabilities. For example, if we associated as a 20 MHz STA
415 * to a 40 MHz AP (due to regulatory, capabilities or config
416 * reasons) then switching to a 40 MHz channel now won't do us
417 * any good -- we couldn't use it with the AP.
419 if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
420 chandef.width == NL80211_CHAN_WIDTH_80P80)
421 flags |= ieee80211_chandef_downgrade(&chandef);
422 if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
423 chandef.width == NL80211_CHAN_WIDTH_160)
424 flags |= ieee80211_chandef_downgrade(&chandef);
425 if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
426 chandef.width > NL80211_CHAN_WIDTH_20)
427 flags |= ieee80211_chandef_downgrade(&chandef);
429 if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
433 "AP %pM changed bandwidth, new config is %d.%03d MHz, "
434 "width %d (%d.%03d/%d MHz)\n",
435 ifmgd->bssid, chandef.chan->center_freq,
436 chandef.chan->freq_offset, chandef.width,
437 chandef.center_freq1, chandef.freq1_offset,
438 chandef.center_freq2);
440 if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
441 IEEE80211_STA_DISABLE_VHT |
442 IEEE80211_STA_DISABLE_HE |
443 IEEE80211_STA_DISABLE_40MHZ |
444 IEEE80211_STA_DISABLE_80P80MHZ |
445 IEEE80211_STA_DISABLE_160MHZ)) ||
446 !cfg80211_chandef_valid(&chandef)) {
448 "AP %pM changed bandwidth in a way we can't support - disconnect\n",
453 switch (chandef.width) {
454 case NL80211_CHAN_WIDTH_20_NOHT:
455 case NL80211_CHAN_WIDTH_20:
456 new_sta_bw = IEEE80211_STA_RX_BW_20;
458 case NL80211_CHAN_WIDTH_40:
459 new_sta_bw = IEEE80211_STA_RX_BW_40;
461 case NL80211_CHAN_WIDTH_80:
462 new_sta_bw = IEEE80211_STA_RX_BW_80;
464 case NL80211_CHAN_WIDTH_80P80:
465 case NL80211_CHAN_WIDTH_160:
466 new_sta_bw = IEEE80211_STA_RX_BW_160;
472 if (new_sta_bw > sta->cur_max_bandwidth)
473 new_sta_bw = sta->cur_max_bandwidth;
475 if (new_sta_bw < sta->sta.bandwidth) {
476 sta->sta.bandwidth = new_sta_bw;
477 rate_control_rate_update(local, sband, sta,
478 IEEE80211_RC_BW_CHANGED);
481 ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
484 "AP %pM changed bandwidth to incompatible one - disconnect\n",
489 if (new_sta_bw > sta->sta.bandwidth) {
490 sta->sta.bandwidth = new_sta_bw;
491 rate_control_rate_update(local, sband, sta,
492 IEEE80211_RC_BW_CHANGED);
498 /* frame sending functions */
500 static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
501 struct sk_buff *skb, u8 ap_ht_param,
502 struct ieee80211_supported_band *sband,
503 struct ieee80211_channel *channel,
504 enum ieee80211_smps_mode smps)
507 u32 flags = channel->flags;
509 struct ieee80211_sta_ht_cap ht_cap;
511 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
513 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
514 ieee80211_apply_htcap_overrides(sdata, &ht_cap);
516 /* determine capability flags */
519 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
520 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
521 if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
522 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
523 cap &= ~IEEE80211_HT_CAP_SGI_40;
526 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
527 if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
528 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
529 cap &= ~IEEE80211_HT_CAP_SGI_40;
535 * If 40 MHz was disabled associate as though we weren't
536 * capable of 40 MHz -- some broken APs will never fall
537 * back to trying to transmit in 20 MHz.
539 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) {
540 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
541 cap &= ~IEEE80211_HT_CAP_SGI_40;
544 /* set SM PS mode properly */
545 cap &= ~IEEE80211_HT_CAP_SM_PS;
547 case IEEE80211_SMPS_AUTOMATIC:
548 case IEEE80211_SMPS_NUM_MODES:
551 case IEEE80211_SMPS_OFF:
552 cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
553 IEEE80211_HT_CAP_SM_PS_SHIFT;
555 case IEEE80211_SMPS_STATIC:
556 cap |= WLAN_HT_CAP_SM_PS_STATIC <<
557 IEEE80211_HT_CAP_SM_PS_SHIFT;
559 case IEEE80211_SMPS_DYNAMIC:
560 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
561 IEEE80211_HT_CAP_SM_PS_SHIFT;
565 /* reserve and fill IE */
566 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
567 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
570 /* This function determines vht capability flags for the association
572 * Note - the function may set the owner of the MU-MIMO capability
574 static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
576 struct ieee80211_supported_band *sband,
577 struct ieee80211_vht_cap *ap_vht_cap)
579 struct ieee80211_local *local = sdata->local;
582 struct ieee80211_sta_vht_cap vht_cap;
583 u32 mask, ap_bf_sts, our_bf_sts;
585 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
587 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
588 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
590 /* determine capability flags */
593 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) {
594 u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
596 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
597 if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ ||
598 bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
599 cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
602 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) {
603 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
604 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
608 * Some APs apparently get confused if our capabilities are better
609 * than theirs, so restrict what we advertise in the assoc request.
611 if (!(ap_vht_cap->vht_cap_info &
612 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
613 cap &= ~(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
614 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE);
615 else if (!(ap_vht_cap->vht_cap_info &
616 cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)))
617 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
620 * If some other vif is using the MU-MIMO capablity we cannot associate
621 * using MU-MIMO - this will lead to contradictions in the group-id
623 * Ownership is defined since association request, in order to avoid
624 * simultaneous associations with MU-MIMO.
626 if (cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) {
627 bool disable_mu_mimo = false;
628 struct ieee80211_sub_if_data *other;
630 list_for_each_entry_rcu(other, &local->interfaces, list) {
631 if (other->vif.mu_mimo_owner) {
632 disable_mu_mimo = true;
637 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
639 sdata->vif.mu_mimo_owner = true;
642 mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
644 ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask;
645 our_bf_sts = cap & mask;
647 if (ap_bf_sts < our_bf_sts) {
652 /* reserve and fill IE */
653 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
654 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
657 /* This function determines HE capability flags for the association
660 static void ieee80211_add_he_ie(struct ieee80211_sub_if_data *sdata,
662 struct ieee80211_supported_band *sband)
665 const struct ieee80211_sta_he_cap *he_cap = NULL;
666 struct ieee80211_chanctx_conf *chanctx_conf;
668 bool reg_cap = false;
671 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
672 if (!WARN_ON_ONCE(!chanctx_conf))
673 reg_cap = cfg80211_chandef_usable(sdata->wdev.wiphy,
675 IEEE80211_CHAN_NO_HE);
679 he_cap = ieee80211_get_he_sta_cap(sband);
680 if (!he_cap || !reg_cap)
684 * TODO: the 1 added is because this temporarily is under the EXTENSION
685 * IE. Get rid of it when it moves.
688 2 + 1 + sizeof(he_cap->he_cap_elem) +
689 ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem) +
690 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
691 he_cap->he_cap_elem.phy_cap_info);
692 pos = skb_put(skb, he_cap_size);
693 ieee80211_ie_build_he_cap(pos, he_cap, pos + he_cap_size);
695 ieee80211_ie_build_he_6ghz_cap(sdata, skb);
698 static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
700 struct ieee80211_local *local = sdata->local;
701 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
702 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
704 struct ieee80211_mgmt *mgmt;
705 u8 *pos, qos_info, *ie_start;
706 size_t offset = 0, noffset;
707 int i, count, rates_len, supp_rates_len, shift;
709 struct ieee80211_supported_band *sband;
710 struct ieee80211_chanctx_conf *chanctx_conf;
711 struct ieee80211_channel *chan;
714 struct element *ext_capa = NULL;
716 /* we know it's writable, cast away the const */
717 if (assoc_data->ie_len)
718 ext_capa = (void *)cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY,
722 sdata_assert_lock(sdata);
725 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
726 if (WARN_ON(!chanctx_conf)) {
730 chan = chanctx_conf->def.chan;
732 sband = local->hw.wiphy->bands[chan->band];
733 shift = ieee80211_vif_get_shift(&sdata->vif);
735 if (assoc_data->supp_rates_len) {
737 * Get all rates supported by the device and the AP as
738 * some APs don't like getting a superset of their rates
739 * in the association request (e.g. D-Link DAP 1353 in
742 rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband,
743 assoc_data->supp_rates,
744 assoc_data->supp_rates_len,
748 * In case AP not provide any supported rates information
749 * before association, we send information element(s) with
750 * all rates that we support.
753 for (i = 0; i < sband->n_bitrates; i++) {
759 skb = alloc_skb(local->hw.extra_tx_headroom +
760 sizeof(*mgmt) + /* bit too much but doesn't matter */
761 2 + assoc_data->ssid_len + /* SSID */
762 4 + rates_len + /* (extended) rates */
763 4 + /* power capability */
764 2 + 2 * sband->n_channels + /* supported channels */
765 2 + sizeof(struct ieee80211_ht_cap) + /* HT */
766 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */
767 2 + 1 + sizeof(struct ieee80211_he_cap_elem) + /* HE */
768 sizeof(struct ieee80211_he_mcs_nss_supp) +
769 IEEE80211_HE_PPE_THRES_MAX_LEN +
770 2 + 1 + sizeof(struct ieee80211_he_6ghz_capa) +
771 assoc_data->ie_len + /* extra IEs */
772 (assoc_data->fils_kek_len ? 16 /* AES-SIV */ : 0) +
778 skb_reserve(skb, local->hw.extra_tx_headroom);
780 capab = WLAN_CAPABILITY_ESS;
782 if (sband->band == NL80211_BAND_2GHZ) {
783 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
784 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
787 if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
788 capab |= WLAN_CAPABILITY_PRIVACY;
790 if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
791 ieee80211_hw_check(&local->hw, SPECTRUM_MGMT))
792 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
794 if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM)
795 capab |= WLAN_CAPABILITY_RADIO_MEASURE;
797 mgmt = skb_put_zero(skb, 24);
798 memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
799 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
800 memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
802 listen_int = cpu_to_le16(sband->band == NL80211_BAND_S1GHZ ?
803 ieee80211_encode_usf(local->hw.conf.listen_interval) :
804 local->hw.conf.listen_interval);
805 if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
807 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
808 IEEE80211_STYPE_REASSOC_REQ);
809 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
810 mgmt->u.reassoc_req.listen_interval = listen_int;
811 memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
815 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
816 IEEE80211_STYPE_ASSOC_REQ);
817 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
818 mgmt->u.assoc_req.listen_interval = listen_int;
822 pos = skb_put(skb, 2 + assoc_data->ssid_len);
824 *pos++ = WLAN_EID_SSID;
825 *pos++ = assoc_data->ssid_len;
826 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
828 if (sband->band == NL80211_BAND_S1GHZ)
831 /* add all rates which were marked to be used above */
832 supp_rates_len = rates_len;
833 if (supp_rates_len > 8)
836 pos = skb_put(skb, supp_rates_len + 2);
837 *pos++ = WLAN_EID_SUPP_RATES;
838 *pos++ = supp_rates_len;
841 for (i = 0; i < sband->n_bitrates; i++) {
842 if (BIT(i) & rates) {
843 int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
851 if (rates_len > count) {
852 pos = skb_put(skb, rates_len - count + 2);
853 *pos++ = WLAN_EID_EXT_SUPP_RATES;
854 *pos++ = rates_len - count;
856 for (i++; i < sband->n_bitrates; i++) {
857 if (BIT(i) & rates) {
859 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
867 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT ||
868 capab & WLAN_CAPABILITY_RADIO_MEASURE) {
869 pos = skb_put(skb, 4);
870 *pos++ = WLAN_EID_PWR_CAPABILITY;
872 *pos++ = 0; /* min tx power */
874 *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def);
878 * Per spec, we shouldn't include the list of channels if we advertise
879 * support for extended channel switching, but we've always done that;
880 * (for now?) apply this restriction only on the (new) 6 GHz band.
882 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT &&
883 (sband->band != NL80211_BAND_6GHZ ||
884 !ext_capa || ext_capa->datalen < 1 ||
885 !(ext_capa->data[0] & WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING))) {
886 /* TODO: get this in reg domain format */
887 pos = skb_put(skb, 2 * sband->n_channels + 2);
888 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
889 *pos++ = 2 * sband->n_channels;
890 for (i = 0; i < sband->n_channels; i++) {
891 *pos++ = ieee80211_frequency_to_channel(
892 sband->channels[i].center_freq);
893 *pos++ = 1; /* one channel in the subband*/
897 /* Set MBSSID support for HE AP if needed */
898 if (ieee80211_hw_check(&local->hw, SUPPORTS_ONLY_HE_MULTI_BSSID) &&
899 !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && assoc_data->ie_len &&
900 ext_capa && ext_capa->datalen >= 3)
901 ext_capa->data[2] |= WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT;
903 /* if present, add any custom IEs that go before HT */
904 if (assoc_data->ie_len) {
905 static const u8 before_ht[] = {
908 WLAN_EID_EXT_SUPP_RATES,
909 WLAN_EID_PWR_CAPABILITY,
910 WLAN_EID_SUPPORTED_CHANNELS,
913 WLAN_EID_RRM_ENABLED_CAPABILITIES,
914 WLAN_EID_MOBILITY_DOMAIN,
915 WLAN_EID_FAST_BSS_TRANSITION, /* reassoc only */
916 WLAN_EID_RIC_DATA, /* reassoc only */
917 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
919 static const u8 after_ric[] = {
920 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
921 WLAN_EID_HT_CAPABILITY,
922 WLAN_EID_BSS_COEX_2040,
923 /* luckily this is almost always there */
924 WLAN_EID_EXT_CAPABILITY,
925 WLAN_EID_QOS_TRAFFIC_CAPA,
926 WLAN_EID_TIM_BCAST_REQ,
927 WLAN_EID_INTERWORKING,
928 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
929 WLAN_EID_VHT_CAPABILITY,
930 WLAN_EID_OPMODE_NOTIF,
933 noffset = ieee80211_ie_split_ric(assoc_data->ie,
936 ARRAY_SIZE(before_ht),
938 ARRAY_SIZE(after_ric),
940 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
944 if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
945 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
946 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
948 if (sband->band != NL80211_BAND_6GHZ &&
949 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
950 ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
951 sband, chan, sdata->smps_mode);
953 /* if present, add any custom IEs that go before VHT */
954 if (assoc_data->ie_len) {
955 static const u8 before_vht[] = {
957 * no need to list the ones split off before HT
960 WLAN_EID_BSS_COEX_2040,
961 WLAN_EID_EXT_CAPABILITY,
962 WLAN_EID_QOS_TRAFFIC_CAPA,
963 WLAN_EID_TIM_BCAST_REQ,
964 WLAN_EID_INTERWORKING,
965 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
968 /* RIC already taken above, so no need to handle here anymore */
969 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
970 before_vht, ARRAY_SIZE(before_vht),
972 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
976 /* if present, add any custom IEs that go before HE */
977 if (assoc_data->ie_len) {
978 static const u8 before_he[] = {
980 * no need to list the ones split off before VHT
983 WLAN_EID_OPMODE_NOTIF,
984 WLAN_EID_EXTENSION, WLAN_EID_EXT_FUTURE_CHAN_GUIDANCE,
986 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_SESSION,
987 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_PUBLIC_KEY,
988 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_KEY_CONFIRM,
989 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_HLP_CONTAINER,
990 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_IP_ADDR_ASSIGN,
991 /* TODO: add 11ah/11aj/11ak elements */
994 /* RIC already taken above, so no need to handle here anymore */
995 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
996 before_he, ARRAY_SIZE(before_he),
998 pos = skb_put(skb, noffset - offset);
999 memcpy(pos, assoc_data->ie + offset, noffset - offset);
1003 if (sband->band != NL80211_BAND_6GHZ &&
1004 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
1005 ieee80211_add_vht_ie(sdata, skb, sband,
1006 &assoc_data->ap_vht_cap);
1009 * If AP doesn't support HT, mark HE as disabled.
1010 * If on the 5GHz band, make sure it supports VHT.
1012 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT ||
1013 (sband->band == NL80211_BAND_5GHZ &&
1014 ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
1015 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
1017 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
1018 ieee80211_add_he_ie(sdata, skb, sband);
1020 /* if present, add any custom non-vendor IEs that go after HE */
1021 if (assoc_data->ie_len) {
1022 noffset = ieee80211_ie_split_vendor(assoc_data->ie,
1025 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
1029 if (assoc_data->wmm) {
1030 if (assoc_data->uapsd) {
1031 qos_info = ifmgd->uapsd_queues;
1032 qos_info |= (ifmgd->uapsd_max_sp_len <<
1033 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
1038 pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info);
1041 if (sband->band == NL80211_BAND_S1GHZ) {
1042 ieee80211_add_aid_request_ie(sdata, skb);
1043 ieee80211_add_s1g_capab_ie(sdata, &sband->s1g_cap, skb);
1046 /* add any remaining custom (i.e. vendor specific here) IEs */
1047 if (assoc_data->ie_len) {
1048 noffset = assoc_data->ie_len;
1049 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
1052 if (assoc_data->fils_kek_len &&
1053 fils_encrypt_assoc_req(skb, assoc_data) < 0) {
1058 pos = skb_tail_pointer(skb);
1059 kfree(ifmgd->assoc_req_ies);
1060 ifmgd->assoc_req_ies = kmemdup(ie_start, pos - ie_start, GFP_ATOMIC);
1061 ifmgd->assoc_req_ies_len = pos - ie_start;
1063 drv_mgd_prepare_tx(local, sdata, 0);
1065 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1066 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1067 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
1068 IEEE80211_TX_INTFL_MLME_CONN_TX;
1069 ieee80211_tx_skb(sdata, skb);
1072 void ieee80211_send_pspoll(struct ieee80211_local *local,
1073 struct ieee80211_sub_if_data *sdata)
1075 struct ieee80211_pspoll *pspoll;
1076 struct sk_buff *skb;
1078 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
1082 pspoll = (struct ieee80211_pspoll *) skb->data;
1083 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1085 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1086 ieee80211_tx_skb(sdata, skb);
1089 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1090 struct ieee80211_sub_if_data *sdata,
1093 struct sk_buff *skb;
1094 struct ieee80211_hdr_3addr *nullfunc;
1095 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1097 /* Don't send NDPs when STA is connected HE */
1098 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1099 !(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
1102 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif,
1103 !ieee80211_hw_check(&local->hw, DOESNT_SUPPORT_QOS_NDP));
1107 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
1109 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1111 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1112 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
1114 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1115 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
1117 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
1118 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
1120 ieee80211_tx_skb(sdata, skb);
1123 static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
1124 struct ieee80211_sub_if_data *sdata)
1126 struct sk_buff *skb;
1127 struct ieee80211_hdr *nullfunc;
1130 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
1133 /* Don't send NDPs when connected HE */
1134 if (!(sdata->u.mgd.flags & IEEE80211_STA_DISABLE_HE))
1137 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
1141 skb_reserve(skb, local->hw.extra_tx_headroom);
1143 nullfunc = skb_put_zero(skb, 30);
1144 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
1145 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
1146 nullfunc->frame_control = fc;
1147 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
1148 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
1149 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
1150 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
1152 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1153 ieee80211_tx_skb(sdata, skb);
1156 /* spectrum management related things */
1157 static void ieee80211_chswitch_work(struct work_struct *work)
1159 struct ieee80211_sub_if_data *sdata =
1160 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
1161 struct ieee80211_local *local = sdata->local;
1162 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1165 if (!ieee80211_sdata_running(sdata))
1169 mutex_lock(&local->mtx);
1170 mutex_lock(&local->chanctx_mtx);
1172 if (!ifmgd->associated)
1175 if (!sdata->vif.csa_active)
1179 * using reservation isn't immediate as it may be deferred until later
1180 * with multi-vif. once reservation is complete it will re-schedule the
1181 * work with no reserved_chanctx so verify chandef to check if it
1182 * completed successfully
1185 if (sdata->reserved_chanctx) {
1186 struct ieee80211_supported_band *sband = NULL;
1187 struct sta_info *mgd_sta = NULL;
1188 enum ieee80211_sta_rx_bandwidth bw = IEEE80211_STA_RX_BW_20;
1191 * with multi-vif csa driver may call ieee80211_csa_finish()
1192 * many times while waiting for other interfaces to use their
1195 if (sdata->reserved_ready)
1198 if (sdata->vif.bss_conf.chandef.width !=
1199 sdata->csa_chandef.width) {
1201 * For managed interface, we need to also update the AP
1202 * station bandwidth and align the rate scale algorithm
1203 * on the bandwidth change. Here we only consider the
1204 * bandwidth of the new channel definition (as channel
1205 * switch flow does not have the full HT/VHT/HE
1206 * information), assuming that if additional changes are
1207 * required they would be done as part of the processing
1208 * of the next beacon from the AP.
1210 switch (sdata->csa_chandef.width) {
1211 case NL80211_CHAN_WIDTH_20_NOHT:
1212 case NL80211_CHAN_WIDTH_20:
1214 bw = IEEE80211_STA_RX_BW_20;
1216 case NL80211_CHAN_WIDTH_40:
1217 bw = IEEE80211_STA_RX_BW_40;
1219 case NL80211_CHAN_WIDTH_80:
1220 bw = IEEE80211_STA_RX_BW_80;
1222 case NL80211_CHAN_WIDTH_80P80:
1223 case NL80211_CHAN_WIDTH_160:
1224 bw = IEEE80211_STA_RX_BW_160;
1228 mgd_sta = sta_info_get(sdata, ifmgd->bssid);
1230 local->hw.wiphy->bands[sdata->csa_chandef.chan->band];
1233 if (sdata->vif.bss_conf.chandef.width >
1234 sdata->csa_chandef.width) {
1235 mgd_sta->sta.bandwidth = bw;
1236 rate_control_rate_update(local, sband, mgd_sta,
1237 IEEE80211_RC_BW_CHANGED);
1240 ret = ieee80211_vif_use_reserved_context(sdata);
1243 "failed to use reserved channel context, disconnecting (err=%d)\n",
1245 ieee80211_queue_work(&sdata->local->hw,
1246 &ifmgd->csa_connection_drop_work);
1250 if (sdata->vif.bss_conf.chandef.width <
1251 sdata->csa_chandef.width) {
1252 mgd_sta->sta.bandwidth = bw;
1253 rate_control_rate_update(local, sband, mgd_sta,
1254 IEEE80211_RC_BW_CHANGED);
1260 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
1261 &sdata->csa_chandef)) {
1263 "failed to finalize channel switch, disconnecting\n");
1264 ieee80211_queue_work(&sdata->local->hw,
1265 &ifmgd->csa_connection_drop_work);
1269 ifmgd->csa_waiting_bcn = true;
1271 ieee80211_sta_reset_beacon_monitor(sdata);
1272 ieee80211_sta_reset_conn_monitor(sdata);
1275 mutex_unlock(&local->chanctx_mtx);
1276 mutex_unlock(&local->mtx);
1277 sdata_unlock(sdata);
1280 static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata)
1282 struct ieee80211_local *local = sdata->local;
1283 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1286 sdata_assert_lock(sdata);
1288 WARN_ON(!sdata->vif.csa_active);
1290 if (sdata->csa_block_tx) {
1291 ieee80211_wake_vif_queues(local, sdata,
1292 IEEE80211_QUEUE_STOP_REASON_CSA);
1293 sdata->csa_block_tx = false;
1296 sdata->vif.csa_active = false;
1297 ifmgd->csa_waiting_bcn = false;
1299 ret = drv_post_channel_switch(sdata);
1302 "driver post channel switch failed, disconnecting\n");
1303 ieee80211_queue_work(&local->hw,
1304 &ifmgd->csa_connection_drop_work);
1308 cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef);
1311 void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
1313 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1314 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1316 trace_api_chswitch_done(sdata, success);
1319 "driver channel switch failed, disconnecting\n");
1320 ieee80211_queue_work(&sdata->local->hw,
1321 &ifmgd->csa_connection_drop_work);
1323 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
1326 EXPORT_SYMBOL(ieee80211_chswitch_done);
1328 static void ieee80211_chswitch_timer(struct timer_list *t)
1330 struct ieee80211_sub_if_data *sdata =
1331 from_timer(sdata, t, u.mgd.chswitch_timer);
1333 ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
1337 ieee80211_sta_abort_chanswitch(struct ieee80211_sub_if_data *sdata)
1339 struct ieee80211_local *local = sdata->local;
1341 if (!local->ops->abort_channel_switch)
1344 mutex_lock(&local->mtx);
1346 mutex_lock(&local->chanctx_mtx);
1347 ieee80211_vif_unreserve_chanctx(sdata);
1348 mutex_unlock(&local->chanctx_mtx);
1350 if (sdata->csa_block_tx)
1351 ieee80211_wake_vif_queues(local, sdata,
1352 IEEE80211_QUEUE_STOP_REASON_CSA);
1354 sdata->csa_block_tx = false;
1355 sdata->vif.csa_active = false;
1357 mutex_unlock(&local->mtx);
1359 drv_abort_channel_switch(sdata);
1363 ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1364 u64 timestamp, u32 device_timestamp,
1365 struct ieee802_11_elems *elems,
1368 struct ieee80211_local *local = sdata->local;
1369 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1370 struct cfg80211_bss *cbss = ifmgd->associated;
1371 struct ieee80211_chanctx_conf *conf;
1372 struct ieee80211_chanctx *chanctx;
1373 enum nl80211_band current_band;
1374 struct ieee80211_csa_ie csa_ie;
1375 struct ieee80211_channel_switch ch_switch;
1376 struct ieee80211_bss *bss;
1379 sdata_assert_lock(sdata);
1384 if (local->scanning)
1387 current_band = cbss->channel->band;
1388 bss = (void *)cbss->priv;
1389 res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band,
1392 ifmgd->associated->bssid, &csa_ie);
1395 ch_switch.timestamp = timestamp;
1396 ch_switch.device_timestamp = device_timestamp;
1397 ch_switch.block_tx = csa_ie.mode;
1398 ch_switch.chandef = csa_ie.chandef;
1399 ch_switch.count = csa_ie.count;
1400 ch_switch.delay = csa_ie.max_switch_time;
1404 ieee80211_queue_work(&local->hw,
1405 &ifmgd->csa_connection_drop_work);
1409 if (beacon && sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) {
1411 ieee80211_sta_abort_chanswitch(sdata);
1413 drv_channel_switch_rx_beacon(sdata, &ch_switch);
1415 } else if (sdata->vif.csa_active || res) {
1416 /* disregard subsequent announcements if already processing */
1420 if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef,
1421 IEEE80211_CHAN_DISABLED)) {
1423 "AP %pM switches to unsupported channel "
1424 "(%d.%03d MHz, width:%d, CF1/2: %d.%03d/%d MHz), "
1426 ifmgd->associated->bssid,
1427 csa_ie.chandef.chan->center_freq,
1428 csa_ie.chandef.chan->freq_offset,
1429 csa_ie.chandef.width, csa_ie.chandef.center_freq1,
1430 csa_ie.chandef.freq1_offset,
1431 csa_ie.chandef.center_freq2);
1432 ieee80211_queue_work(&local->hw,
1433 &ifmgd->csa_connection_drop_work);
1437 if (cfg80211_chandef_identical(&csa_ie.chandef,
1438 &sdata->vif.bss_conf.chandef) &&
1439 (!csa_ie.mode || !beacon)) {
1440 if (ifmgd->csa_ignored_same_chan)
1443 "AP %pM tries to chanswitch to same channel, ignore\n",
1444 ifmgd->associated->bssid);
1445 ifmgd->csa_ignored_same_chan = true;
1450 * Drop all TDLS peers - either we disconnect or move to a different
1451 * channel from this point on. There's no telling what our peer will do.
1452 * The TDLS WIDER_BW scenario is also problematic, as peers might now
1453 * have an incompatible wider chandef.
1455 ieee80211_teardown_tdls_peers(sdata);
1457 mutex_lock(&local->mtx);
1458 mutex_lock(&local->chanctx_mtx);
1459 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
1460 lockdep_is_held(&local->chanctx_mtx));
1463 "no channel context assigned to vif?, disconnecting\n");
1464 goto drop_connection;
1467 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
1469 if (local->use_chanctx &&
1470 !ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) {
1472 "driver doesn't support chan-switch with channel contexts\n");
1473 goto drop_connection;
1476 if (drv_pre_channel_switch(sdata, &ch_switch)) {
1478 "preparing for channel switch failed, disconnecting\n");
1479 goto drop_connection;
1482 res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef,
1483 chanctx->mode, false);
1486 "failed to reserve channel context for channel switch, disconnecting (err=%d)\n",
1488 goto drop_connection;
1490 mutex_unlock(&local->chanctx_mtx);
1492 sdata->vif.csa_active = true;
1493 sdata->csa_chandef = csa_ie.chandef;
1494 sdata->csa_block_tx = csa_ie.mode;
1495 ifmgd->csa_ignored_same_chan = false;
1497 if (sdata->csa_block_tx)
1498 ieee80211_stop_vif_queues(local, sdata,
1499 IEEE80211_QUEUE_STOP_REASON_CSA);
1500 mutex_unlock(&local->mtx);
1502 cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef,
1505 if (local->ops->channel_switch) {
1506 /* use driver's channel switch callback */
1507 drv_channel_switch(local, sdata, &ch_switch);
1511 /* channel switch handled in software */
1512 if (csa_ie.count <= 1)
1513 ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
1515 mod_timer(&ifmgd->chswitch_timer,
1516 TU_TO_EXP_TIME((csa_ie.count - 1) *
1517 cbss->beacon_interval));
1521 * This is just so that the disconnect flow will know that
1522 * we were trying to switch channel and failed. In case the
1523 * mode is 1 (we are not allowed to Tx), we will know not to
1524 * send a deauthentication frame. Those two fields will be
1525 * reset when the disconnection worker runs.
1527 sdata->vif.csa_active = true;
1528 sdata->csa_block_tx = csa_ie.mode;
1530 ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work);
1531 mutex_unlock(&local->chanctx_mtx);
1532 mutex_unlock(&local->mtx);
1536 ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata,
1537 struct ieee80211_channel *channel,
1538 const u8 *country_ie, u8 country_ie_len,
1539 const u8 *pwr_constr_elem,
1540 int *chan_pwr, int *pwr_reduction)
1542 struct ieee80211_country_ie_triplet *triplet;
1543 int chan = ieee80211_frequency_to_channel(channel->center_freq);
1544 int i, chan_increment;
1545 bool have_chan_pwr = false;
1548 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
1551 triplet = (void *)(country_ie + 3);
1552 country_ie_len -= 3;
1554 switch (channel->band) {
1558 case NL80211_BAND_2GHZ:
1559 case NL80211_BAND_60GHZ:
1562 case NL80211_BAND_5GHZ:
1563 case NL80211_BAND_6GHZ:
1569 while (country_ie_len >= 3) {
1570 u8 first_channel = triplet->chans.first_channel;
1572 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
1575 for (i = 0; i < triplet->chans.num_channels; i++) {
1576 if (first_channel + i * chan_increment == chan) {
1577 have_chan_pwr = true;
1578 *chan_pwr = triplet->chans.max_power;
1587 country_ie_len -= 3;
1590 if (have_chan_pwr && pwr_constr_elem)
1591 *pwr_reduction = *pwr_constr_elem;
1595 return have_chan_pwr;
1598 static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata,
1599 struct ieee80211_channel *channel,
1600 const u8 *cisco_dtpc_ie,
1603 /* From practical testing, the first data byte of the DTPC element
1604 * seems to contain the requested dBm level, and the CLI on Cisco
1605 * APs clearly state the range is -127 to 127 dBm, which indicates
1606 * a signed byte, although it seemingly never actually goes negative.
1607 * The other byte seems to always be zero.
1609 *pwr_level = (__s8)cisco_dtpc_ie[4];
1612 static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1613 struct ieee80211_channel *channel,
1614 struct ieee80211_mgmt *mgmt,
1615 const u8 *country_ie, u8 country_ie_len,
1616 const u8 *pwr_constr_ie,
1617 const u8 *cisco_dtpc_ie)
1619 bool has_80211h_pwr = false, has_cisco_pwr = false;
1620 int chan_pwr = 0, pwr_reduction_80211h = 0;
1621 int pwr_level_cisco, pwr_level_80211h;
1623 __le16 capab = mgmt->u.probe_resp.capab_info;
1625 if (ieee80211_is_s1g_beacon(mgmt->frame_control))
1626 return 0; /* TODO */
1629 (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) ||
1630 capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) {
1631 has_80211h_pwr = ieee80211_find_80211h_pwr_constr(
1632 sdata, channel, country_ie, country_ie_len,
1633 pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h);
1635 max_t(int, 0, chan_pwr - pwr_reduction_80211h);
1638 if (cisco_dtpc_ie) {
1639 ieee80211_find_cisco_dtpc(
1640 sdata, channel, cisco_dtpc_ie, &pwr_level_cisco);
1641 has_cisco_pwr = true;
1644 if (!has_80211h_pwr && !has_cisco_pwr)
1647 /* If we have both 802.11h and Cisco DTPC, apply both limits
1648 * by picking the smallest of the two power levels advertised.
1650 if (has_80211h_pwr &&
1651 (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) {
1652 new_ap_level = pwr_level_80211h;
1654 if (sdata->ap_power_level == new_ap_level)
1658 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1659 pwr_level_80211h, chan_pwr, pwr_reduction_80211h,
1660 sdata->u.mgd.bssid);
1661 } else { /* has_cisco_pwr is always true here. */
1662 new_ap_level = pwr_level_cisco;
1664 if (sdata->ap_power_level == new_ap_level)
1668 "Limiting TX power to %d dBm as advertised by %pM\n",
1669 pwr_level_cisco, sdata->u.mgd.bssid);
1672 sdata->ap_power_level = new_ap_level;
1673 if (__ieee80211_recalc_txpower(sdata))
1674 return BSS_CHANGED_TXPOWER;
1679 static void ieee80211_enable_ps(struct ieee80211_local *local,
1680 struct ieee80211_sub_if_data *sdata)
1682 struct ieee80211_conf *conf = &local->hw.conf;
1685 * If we are scanning right now then the parameters will
1686 * take effect when scan finishes.
1688 if (local->scanning)
1691 if (conf->dynamic_ps_timeout > 0 &&
1692 !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) {
1693 mod_timer(&local->dynamic_ps_timer, jiffies +
1694 msecs_to_jiffies(conf->dynamic_ps_timeout));
1696 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK))
1697 ieee80211_send_nullfunc(local, sdata, true);
1699 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
1700 ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1703 conf->flags |= IEEE80211_CONF_PS;
1704 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1708 static void ieee80211_change_ps(struct ieee80211_local *local)
1710 struct ieee80211_conf *conf = &local->hw.conf;
1712 if (local->ps_sdata) {
1713 ieee80211_enable_ps(local, local->ps_sdata);
1714 } else if (conf->flags & IEEE80211_CONF_PS) {
1715 conf->flags &= ~IEEE80211_CONF_PS;
1716 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1717 del_timer_sync(&local->dynamic_ps_timer);
1718 cancel_work_sync(&local->dynamic_ps_enable_work);
1722 static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
1724 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
1725 struct sta_info *sta = NULL;
1726 bool authorized = false;
1728 if (!mgd->powersave)
1734 if (!mgd->associated)
1737 if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
1740 if (!mgd->have_beacon)
1744 sta = sta_info_get(sdata, mgd->bssid);
1746 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
1752 /* need to hold RTNL or interface lock */
1753 void ieee80211_recalc_ps(struct ieee80211_local *local)
1755 struct ieee80211_sub_if_data *sdata, *found = NULL;
1759 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) {
1760 local->ps_sdata = NULL;
1764 list_for_each_entry(sdata, &local->interfaces, list) {
1765 if (!ieee80211_sdata_running(sdata))
1767 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1768 /* If an AP vif is found, then disable PS
1769 * by setting the count to zero thereby setting
1775 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1781 if (count == 1 && ieee80211_powersave_allowed(found)) {
1782 u8 dtimper = found->u.mgd.dtim_period;
1784 timeout = local->dynamic_ps_forced_timeout;
1787 local->hw.conf.dynamic_ps_timeout = timeout;
1789 /* If the TIM IE is invalid, pretend the value is 1 */
1793 local->hw.conf.ps_dtim_period = dtimper;
1794 local->ps_sdata = found;
1796 local->ps_sdata = NULL;
1799 ieee80211_change_ps(local);
1802 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1804 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1806 if (sdata->vif.bss_conf.ps != ps_allowed) {
1807 sdata->vif.bss_conf.ps = ps_allowed;
1808 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1812 void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1814 struct ieee80211_local *local =
1815 container_of(work, struct ieee80211_local,
1816 dynamic_ps_disable_work);
1818 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1819 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1820 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1823 ieee80211_wake_queues_by_reason(&local->hw,
1824 IEEE80211_MAX_QUEUE_MAP,
1825 IEEE80211_QUEUE_STOP_REASON_PS,
1829 void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1831 struct ieee80211_local *local =
1832 container_of(work, struct ieee80211_local,
1833 dynamic_ps_enable_work);
1834 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
1835 struct ieee80211_if_managed *ifmgd;
1836 unsigned long flags;
1839 /* can only happen when PS was just disabled anyway */
1843 ifmgd = &sdata->u.mgd;
1845 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1848 if (local->hw.conf.dynamic_ps_timeout > 0) {
1849 /* don't enter PS if TX frames are pending */
1850 if (drv_tx_frames_pending(local)) {
1851 mod_timer(&local->dynamic_ps_timer, jiffies +
1853 local->hw.conf.dynamic_ps_timeout));
1858 * transmission can be stopped by others which leads to
1859 * dynamic_ps_timer expiry. Postpone the ps timer if it
1860 * is not the actual idle state.
1862 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1863 for (q = 0; q < local->hw.queues; q++) {
1864 if (local->queue_stop_reasons[q]) {
1865 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1867 mod_timer(&local->dynamic_ps_timer, jiffies +
1869 local->hw.conf.dynamic_ps_timeout));
1873 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1876 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
1877 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1878 if (drv_tx_frames_pending(local)) {
1879 mod_timer(&local->dynamic_ps_timer, jiffies +
1881 local->hw.conf.dynamic_ps_timeout));
1883 ieee80211_send_nullfunc(local, sdata, true);
1884 /* Flush to get the tx status of nullfunc frame */
1885 ieee80211_flush_queues(local, sdata, false);
1889 if (!(ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) &&
1890 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) ||
1891 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1892 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1893 local->hw.conf.flags |= IEEE80211_CONF_PS;
1894 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1898 void ieee80211_dynamic_ps_timer(struct timer_list *t)
1900 struct ieee80211_local *local = from_timer(local, t, dynamic_ps_timer);
1902 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
1905 void ieee80211_dfs_cac_timer_work(struct work_struct *work)
1907 struct delayed_work *delayed_work = to_delayed_work(work);
1908 struct ieee80211_sub_if_data *sdata =
1909 container_of(delayed_work, struct ieee80211_sub_if_data,
1910 dfs_cac_timer_work);
1911 struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
1913 mutex_lock(&sdata->local->mtx);
1914 if (sdata->wdev.cac_started) {
1915 ieee80211_vif_release_channel(sdata);
1916 cfg80211_cac_event(sdata->dev, &chandef,
1917 NL80211_RADAR_CAC_FINISHED,
1920 mutex_unlock(&sdata->local->mtx);
1924 __ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1926 struct ieee80211_local *local = sdata->local;
1927 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1931 if (local->hw.queues < IEEE80211_NUM_ACS)
1934 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1935 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
1937 unsigned long now = jiffies;
1939 if (tx_tspec->action == TX_TSPEC_ACTION_NONE &&
1940 tx_tspec->admitted_time &&
1941 time_after(now, tx_tspec->time_slice_start + HZ)) {
1942 tx_tspec->consumed_tx_time = 0;
1943 tx_tspec->time_slice_start = now;
1945 if (tx_tspec->downgraded)
1947 TX_TSPEC_ACTION_STOP_DOWNGRADE;
1950 switch (tx_tspec->action) {
1951 case TX_TSPEC_ACTION_STOP_DOWNGRADE:
1952 /* take the original parameters */
1953 if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac]))
1955 "failed to set TX queue parameters for queue %d\n",
1957 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1958 tx_tspec->downgraded = false;
1961 case TX_TSPEC_ACTION_DOWNGRADE:
1962 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
1963 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1967 /* downgrade next lower non-ACM AC */
1968 for (non_acm_ac = ac + 1;
1969 non_acm_ac < IEEE80211_NUM_ACS;
1971 if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac)))
1973 /* Usually the loop will result in using BK even if it
1974 * requires admission control, but such a configuration
1975 * makes no sense and we have to transmit somehow - the
1976 * AC selection does the same thing.
1977 * If we started out trying to downgrade from BK, then
1978 * the extra condition here might be needed.
1980 if (non_acm_ac >= IEEE80211_NUM_ACS)
1981 non_acm_ac = IEEE80211_AC_BK;
1982 if (drv_conf_tx(local, sdata, ac,
1983 &sdata->tx_conf[non_acm_ac]))
1985 "failed to set TX queue parameters for queue %d\n",
1987 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1989 schedule_delayed_work(&ifmgd->tx_tspec_wk,
1990 tx_tspec->time_slice_start + HZ - now + 1);
1992 case TX_TSPEC_ACTION_NONE:
2001 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
2003 if (__ieee80211_sta_handle_tspec_ac_params(sdata))
2004 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2007 static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work)
2009 struct ieee80211_sub_if_data *sdata;
2011 sdata = container_of(work, struct ieee80211_sub_if_data,
2012 u.mgd.tx_tspec_wk.work);
2013 ieee80211_sta_handle_tspec_ac_params(sdata);
2018 ieee80211_sta_wmm_params(struct ieee80211_local *local,
2019 struct ieee80211_sub_if_data *sdata,
2020 const u8 *wmm_param, size_t wmm_param_len,
2021 const struct ieee80211_mu_edca_param_set *mu_edca)
2023 struct ieee80211_tx_queue_params params[IEEE80211_NUM_ACS];
2024 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2026 int count, mu_edca_count, ac;
2028 u8 uapsd_queues = 0;
2030 if (!local->ops->conf_tx)
2033 if (local->hw.queues < IEEE80211_NUM_ACS)
2039 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
2042 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
2043 uapsd_queues = ifmgd->uapsd_queues;
2045 count = wmm_param[6] & 0x0f;
2046 /* -1 is the initial value of ifmgd->mu_edca_last_param_set.
2047 * if mu_edca was preset before and now it disappeared tell
2048 * the driver about it.
2050 mu_edca_count = mu_edca ? mu_edca->mu_qos_info & 0x0f : -1;
2051 if (count == ifmgd->wmm_last_param_set &&
2052 mu_edca_count == ifmgd->mu_edca_last_param_set)
2054 ifmgd->wmm_last_param_set = count;
2055 ifmgd->mu_edca_last_param_set = mu_edca_count;
2057 pos = wmm_param + 8;
2058 left = wmm_param_len - 8;
2060 memset(¶ms, 0, sizeof(params));
2063 for (; left >= 4; left -= 4, pos += 4) {
2064 int aci = (pos[0] >> 5) & 0x03;
2065 int acm = (pos[0] >> 4) & 0x01;
2070 ac = IEEE80211_AC_BK;
2072 sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
2073 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
2075 params[ac].mu_edca = !!mu_edca;
2077 params[ac].mu_edca_param_rec = mu_edca->ac_bk;
2080 ac = IEEE80211_AC_VI;
2082 sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
2083 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
2085 params[ac].mu_edca = !!mu_edca;
2087 params[ac].mu_edca_param_rec = mu_edca->ac_vi;
2090 ac = IEEE80211_AC_VO;
2092 sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
2093 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
2095 params[ac].mu_edca = !!mu_edca;
2097 params[ac].mu_edca_param_rec = mu_edca->ac_vo;
2101 ac = IEEE80211_AC_BE;
2103 sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
2104 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
2106 params[ac].mu_edca = !!mu_edca;
2108 params[ac].mu_edca_param_rec = mu_edca->ac_be;
2112 params[ac].aifs = pos[0] & 0x0f;
2114 if (params[ac].aifs < 2) {
2116 "AP has invalid WMM params (AIFSN=%d for ACI %d), will use 2\n",
2117 params[ac].aifs, aci);
2118 params[ac].aifs = 2;
2120 params[ac].cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
2121 params[ac].cw_min = ecw2cw(pos[1] & 0x0f);
2122 params[ac].txop = get_unaligned_le16(pos + 2);
2123 params[ac].acm = acm;
2124 params[ac].uapsd = uapsd;
2126 if (params[ac].cw_min == 0 ||
2127 params[ac].cw_min > params[ac].cw_max) {
2129 "AP has invalid WMM params (CWmin/max=%d/%d for ACI %d), using defaults\n",
2130 params[ac].cw_min, params[ac].cw_max, aci);
2133 ieee80211_regulatory_limit_wmm_params(sdata, ¶ms[ac], ac);
2136 /* WMM specification requires all 4 ACIs. */
2137 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
2138 if (params[ac].cw_min == 0) {
2140 "AP has invalid WMM params (missing AC %d), using defaults\n",
2146 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
2148 "WMM AC=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
2150 params[ac].aifs, params[ac].cw_min, params[ac].cw_max,
2151 params[ac].txop, params[ac].uapsd,
2152 ifmgd->tx_tspec[ac].downgraded);
2153 sdata->tx_conf[ac] = params[ac];
2154 if (!ifmgd->tx_tspec[ac].downgraded &&
2155 drv_conf_tx(local, sdata, ac, ¶ms[ac]))
2157 "failed to set TX queue parameters for AC %d\n",
2161 /* enable WMM or activate new settings */
2162 sdata->vif.bss_conf.qos = true;
2166 static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
2168 lockdep_assert_held(&sdata->local->mtx);
2170 sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL;
2171 ieee80211_run_deferred_scan(sdata->local);
2174 static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
2176 mutex_lock(&sdata->local->mtx);
2177 __ieee80211_stop_poll(sdata);
2178 mutex_unlock(&sdata->local->mtx);
2181 static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
2182 u16 capab, bool erp_valid, u8 erp)
2184 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
2185 struct ieee80211_supported_band *sband;
2187 bool use_protection;
2188 bool use_short_preamble;
2189 bool use_short_slot;
2191 sband = ieee80211_get_sband(sdata);
2196 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
2197 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
2199 use_protection = false;
2200 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
2203 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
2204 if (sband->band == NL80211_BAND_5GHZ ||
2205 sband->band == NL80211_BAND_6GHZ)
2206 use_short_slot = true;
2208 if (use_protection != bss_conf->use_cts_prot) {
2209 bss_conf->use_cts_prot = use_protection;
2210 changed |= BSS_CHANGED_ERP_CTS_PROT;
2213 if (use_short_preamble != bss_conf->use_short_preamble) {
2214 bss_conf->use_short_preamble = use_short_preamble;
2215 changed |= BSS_CHANGED_ERP_PREAMBLE;
2218 if (use_short_slot != bss_conf->use_short_slot) {
2219 bss_conf->use_short_slot = use_short_slot;
2220 changed |= BSS_CHANGED_ERP_SLOT;
2226 static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
2227 struct cfg80211_bss *cbss,
2228 u32 bss_info_changed)
2230 struct ieee80211_bss *bss = (void *)cbss->priv;
2231 struct ieee80211_local *local = sdata->local;
2232 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
2234 bss_info_changed |= BSS_CHANGED_ASSOC;
2235 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
2236 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
2238 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
2239 beacon_loss_count * bss_conf->beacon_int));
2241 sdata->u.mgd.associated = cbss;
2242 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
2244 ieee80211_check_rate_mask(sdata);
2246 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
2248 if (sdata->vif.p2p ||
2249 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
2250 const struct cfg80211_bss_ies *ies;
2253 ies = rcu_dereference(cbss->ies);
2257 ret = cfg80211_get_p2p_attr(
2258 ies->data, ies->len,
2259 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
2260 (u8 *) &bss_conf->p2p_noa_attr,
2261 sizeof(bss_conf->p2p_noa_attr));
2263 sdata->u.mgd.p2p_noa_index =
2264 bss_conf->p2p_noa_attr.index;
2265 bss_info_changed |= BSS_CHANGED_P2P_PS;
2271 /* just to be sure */
2272 ieee80211_stop_poll(sdata);
2274 ieee80211_led_assoc(local, 1);
2276 if (sdata->u.mgd.have_beacon) {
2278 * If the AP is buggy we may get here with no DTIM period
2279 * known, so assume it's 1 which is the only safe assumption
2280 * in that case, although if the TIM IE is broken powersave
2281 * probably just won't work at all.
2283 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
2284 bss_conf->beacon_rate = bss->beacon_rate;
2285 bss_info_changed |= BSS_CHANGED_BEACON_INFO;
2287 bss_conf->beacon_rate = NULL;
2288 bss_conf->dtim_period = 0;
2291 bss_conf->assoc = 1;
2293 /* Tell the driver to monitor connection quality (if supported) */
2294 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
2295 bss_conf->cqm_rssi_thold)
2296 bss_info_changed |= BSS_CHANGED_CQM;
2298 /* Enable ARP filtering */
2299 if (bss_conf->arp_addr_cnt)
2300 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
2302 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
2304 mutex_lock(&local->iflist_mtx);
2305 ieee80211_recalc_ps(local);
2306 mutex_unlock(&local->iflist_mtx);
2308 ieee80211_recalc_smps(sdata);
2309 ieee80211_recalc_ps_vif(sdata);
2311 netif_carrier_on(sdata->dev);
2314 static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
2315 u16 stype, u16 reason, bool tx,
2318 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2319 struct ieee80211_local *local = sdata->local;
2322 sdata_assert_lock(sdata);
2324 if (WARN_ON_ONCE(tx && !frame_buf))
2327 if (WARN_ON(!ifmgd->associated))
2330 ieee80211_stop_poll(sdata);
2332 ifmgd->associated = NULL;
2333 netif_carrier_off(sdata->dev);
2336 * if we want to get out of ps before disassoc (why?) we have
2337 * to do it before sending disassoc, as otherwise the null-packet
2340 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
2341 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
2342 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2344 local->ps_sdata = NULL;
2346 /* disable per-vif ps */
2347 ieee80211_recalc_ps_vif(sdata);
2349 /* make sure ongoing transmission finishes */
2353 * drop any frame before deauth/disassoc, this can be data or
2354 * management frame. Since we are disconnecting, we should not
2355 * insist sending these frames which can take time and delay
2356 * the disconnection and possible the roaming.
2359 ieee80211_flush_queues(local, sdata, true);
2361 /* deauthenticate/disassociate now */
2362 if (tx || frame_buf) {
2364 * In multi channel scenarios guarantee that the virtual
2365 * interface is granted immediate airtime to transmit the
2366 * deauthentication frame by calling mgd_prepare_tx, if the
2367 * driver requested so.
2369 if (ieee80211_hw_check(&local->hw, DEAUTH_NEED_MGD_TX_PREP) &&
2370 !ifmgd->have_beacon)
2371 drv_mgd_prepare_tx(sdata->local, sdata, 0);
2373 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid,
2374 ifmgd->bssid, stype, reason,
2378 /* flush out frame - make sure the deauth was actually sent */
2380 ieee80211_flush_queues(local, sdata, false);
2382 /* clear bssid only after building the needed mgmt frames */
2383 eth_zero_addr(ifmgd->bssid);
2385 /* remove AP and TDLS peers */
2386 sta_info_flush(sdata);
2388 /* finally reset all BSS / config parameters */
2389 changed |= ieee80211_reset_erp_info(sdata);
2391 ieee80211_led_assoc(local, 0);
2392 changed |= BSS_CHANGED_ASSOC;
2393 sdata->vif.bss_conf.assoc = false;
2395 ifmgd->p2p_noa_index = -1;
2396 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
2397 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
2399 /* on the next assoc, re-program HT/VHT parameters */
2400 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
2401 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
2402 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
2403 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
2405 /* reset MU-MIMO ownership and group data */
2406 memset(sdata->vif.bss_conf.mu_group.membership, 0,
2407 sizeof(sdata->vif.bss_conf.mu_group.membership));
2408 memset(sdata->vif.bss_conf.mu_group.position, 0,
2409 sizeof(sdata->vif.bss_conf.mu_group.position));
2410 changed |= BSS_CHANGED_MU_GROUPS;
2411 sdata->vif.mu_mimo_owner = false;
2413 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
2415 del_timer_sync(&local->dynamic_ps_timer);
2416 cancel_work_sync(&local->dynamic_ps_enable_work);
2418 /* Disable ARP filtering */
2419 if (sdata->vif.bss_conf.arp_addr_cnt)
2420 changed |= BSS_CHANGED_ARP_FILTER;
2422 sdata->vif.bss_conf.qos = false;
2423 changed |= BSS_CHANGED_QOS;
2425 /* The BSSID (not really interesting) and HT changed */
2426 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
2427 ieee80211_bss_info_change_notify(sdata, changed);
2429 /* disassociated - set to defaults now */
2430 ieee80211_set_wmm_default(sdata, false, false);
2432 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
2433 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
2434 del_timer_sync(&sdata->u.mgd.timer);
2435 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2437 sdata->vif.bss_conf.dtim_period = 0;
2438 sdata->vif.bss_conf.beacon_rate = NULL;
2440 ifmgd->have_beacon = false;
2443 mutex_lock(&local->mtx);
2444 ieee80211_vif_release_channel(sdata);
2446 sdata->vif.csa_active = false;
2447 ifmgd->csa_waiting_bcn = false;
2448 ifmgd->csa_ignored_same_chan = false;
2449 if (sdata->csa_block_tx) {
2450 ieee80211_wake_vif_queues(local, sdata,
2451 IEEE80211_QUEUE_STOP_REASON_CSA);
2452 sdata->csa_block_tx = false;
2454 mutex_unlock(&local->mtx);
2456 /* existing TX TSPEC sessions no longer exist */
2457 memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec));
2458 cancel_delayed_work_sync(&ifmgd->tx_tspec_wk);
2460 sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
2463 static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
2465 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2466 struct ieee80211_local *local = sdata->local;
2468 mutex_lock(&local->mtx);
2469 if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL))
2472 __ieee80211_stop_poll(sdata);
2474 mutex_lock(&local->iflist_mtx);
2475 ieee80211_recalc_ps(local);
2476 mutex_unlock(&local->iflist_mtx);
2478 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
2482 * We've received a probe response, but are not sure whether
2483 * we have or will be receiving any beacons or data, so let's
2484 * schedule the timers again, just in case.
2486 ieee80211_sta_reset_beacon_monitor(sdata);
2488 mod_timer(&ifmgd->conn_mon_timer,
2489 round_jiffies_up(jiffies +
2490 IEEE80211_CONNECTION_IDLE_TIME));
2492 mutex_unlock(&local->mtx);
2495 static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata,
2496 struct ieee80211_hdr *hdr,
2499 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2500 u16 tid = ieee80211_get_tid(hdr);
2501 int ac = ieee80211_ac_from_tid(tid);
2502 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
2503 unsigned long now = jiffies;
2505 if (likely(!tx_tspec->admitted_time))
2508 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
2509 tx_tspec->consumed_tx_time = 0;
2510 tx_tspec->time_slice_start = now;
2512 if (tx_tspec->downgraded) {
2513 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
2514 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2518 if (tx_tspec->downgraded)
2521 tx_tspec->consumed_tx_time += tx_time;
2523 if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) {
2524 tx_tspec->downgraded = true;
2525 tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE;
2526 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2530 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2531 struct ieee80211_hdr *hdr, bool ack, u16 tx_time)
2533 ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time);
2535 if (!ieee80211_is_any_nullfunc(hdr->frame_control) ||
2536 !sdata->u.mgd.probe_send_count)
2540 sdata->u.mgd.probe_send_count = 0;
2542 sdata->u.mgd.nullfunc_failed = true;
2543 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
2546 static void ieee80211_mlme_send_probe_req(struct ieee80211_sub_if_data *sdata,
2547 const u8 *src, const u8 *dst,
2548 const u8 *ssid, size_t ssid_len,
2549 struct ieee80211_channel *channel)
2551 struct sk_buff *skb;
2553 skb = ieee80211_build_probe_req(sdata, src, dst, (u32)-1, channel,
2554 ssid, ssid_len, NULL, 0,
2555 IEEE80211_PROBE_FLAG_DIRECTED);
2557 ieee80211_tx_skb(sdata, skb);
2560 static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
2562 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2564 u8 *dst = ifmgd->associated->bssid;
2565 u8 unicast_limit = max(1, max_probe_tries - 3);
2566 struct sta_info *sta;
2569 * Try sending broadcast probe requests for the last three
2570 * probe requests after the first ones failed since some
2571 * buggy APs only support broadcast probe requests.
2573 if (ifmgd->probe_send_count >= unicast_limit)
2577 * When the hardware reports an accurate Tx ACK status, it's
2578 * better to send a nullfunc frame instead of a probe request,
2579 * as it will kick us off the AP quickly if we aren't associated
2580 * anymore. The timeout will be reset if the frame is ACKed by
2583 ifmgd->probe_send_count++;
2586 mutex_lock(&sdata->local->sta_mtx);
2587 sta = sta_info_get(sdata, dst);
2589 ieee80211_check_fast_rx(sta);
2590 mutex_unlock(&sdata->local->sta_mtx);
2593 if (ieee80211_hw_check(&sdata->local->hw, REPORTS_TX_ACK_STATUS)) {
2594 ifmgd->nullfunc_failed = false;
2595 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
2596 ifmgd->probe_send_count--;
2598 ieee80211_send_nullfunc(sdata->local, sdata, false);
2603 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
2604 if (WARN_ON_ONCE(ssid == NULL))
2609 ieee80211_mlme_send_probe_req(sdata, sdata->vif.addr, dst,
2611 ifmgd->associated->channel);
2615 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
2616 run_again(sdata, ifmgd->probe_timeout);
2619 static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
2622 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2623 bool already = false;
2625 if (!ieee80211_sdata_running(sdata))
2630 if (!ifmgd->associated)
2633 mutex_lock(&sdata->local->mtx);
2635 if (sdata->local->tmp_channel || sdata->local->scanning) {
2636 mutex_unlock(&sdata->local->mtx);
2641 mlme_dbg_ratelimited(sdata,
2642 "detected beacon loss from AP (missed %d beacons) - probing\n",
2645 ieee80211_cqm_beacon_loss_notify(&sdata->vif, GFP_KERNEL);
2649 * The driver/our work has already reported this event or the
2650 * connection monitoring has kicked in and we have already sent
2651 * a probe request. Or maybe the AP died and the driver keeps
2652 * reporting until we disassociate...
2654 * In either case we have to ignore the current call to this
2655 * function (except for setting the correct probe reason bit)
2656 * because otherwise we would reset the timer every time and
2657 * never check whether we received a probe response!
2659 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
2662 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
2664 mutex_unlock(&sdata->local->mtx);
2669 mutex_lock(&sdata->local->iflist_mtx);
2670 ieee80211_recalc_ps(sdata->local);
2671 mutex_unlock(&sdata->local->iflist_mtx);
2673 ifmgd->probe_send_count = 0;
2674 ieee80211_mgd_probe_ap_send(sdata);
2676 sdata_unlock(sdata);
2679 struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
2680 struct ieee80211_vif *vif)
2682 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2683 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2684 struct cfg80211_bss *cbss;
2685 struct sk_buff *skb;
2689 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2692 sdata_assert_lock(sdata);
2694 if (ifmgd->associated)
2695 cbss = ifmgd->associated;
2696 else if (ifmgd->auth_data)
2697 cbss = ifmgd->auth_data->bss;
2698 else if (ifmgd->assoc_data)
2699 cbss = ifmgd->assoc_data->bss;
2704 ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
2705 if (WARN_ONCE(!ssid || ssid[1] > IEEE80211_MAX_SSID_LEN,
2706 "invalid SSID element (len=%d)", ssid ? ssid[1] : -1))
2711 skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid,
2712 (u32) -1, cbss->channel,
2714 NULL, 0, IEEE80211_PROBE_FLAG_DIRECTED);
2719 EXPORT_SYMBOL(ieee80211_ap_probereq_get);
2721 static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata,
2722 const u8 *buf, size_t len, bool tx,
2725 struct ieee80211_event event = {
2727 .u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT,
2728 .u.mlme.reason = reason,
2732 cfg80211_tx_mlme_mgmt(sdata->dev, buf, len);
2734 cfg80211_rx_mlme_mgmt(sdata->dev, buf, len);
2736 drv_event_callback(sdata->local, sdata, &event);
2739 static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
2741 struct ieee80211_local *local = sdata->local;
2742 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2743 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
2747 if (!ifmgd->associated) {
2748 sdata_unlock(sdata);
2752 tx = !sdata->csa_block_tx;
2754 /* AP is probably out of range (or not reachable for another reason) so
2755 * remove the bss struct for that AP.
2757 cfg80211_unlink_bss(local->hw.wiphy, ifmgd->associated);
2759 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
2760 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
2762 mutex_lock(&local->mtx);
2763 sdata->vif.csa_active = false;
2764 ifmgd->csa_waiting_bcn = false;
2765 if (sdata->csa_block_tx) {
2766 ieee80211_wake_vif_queues(local, sdata,
2767 IEEE80211_QUEUE_STOP_REASON_CSA);
2768 sdata->csa_block_tx = false;
2770 mutex_unlock(&local->mtx);
2772 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), tx,
2773 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
2775 sdata_unlock(sdata);
2778 static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
2780 struct ieee80211_sub_if_data *sdata =
2781 container_of(work, struct ieee80211_sub_if_data,
2782 u.mgd.beacon_connection_loss_work);
2783 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2785 if (ifmgd->associated)
2786 ifmgd->beacon_loss_count++;
2788 if (ifmgd->connection_loss) {
2789 sdata_info(sdata, "Connection to AP %pM lost\n",
2791 __ieee80211_disconnect(sdata);
2793 ieee80211_mgd_probe_ap(sdata, true);
2797 static void ieee80211_csa_connection_drop_work(struct work_struct *work)
2799 struct ieee80211_sub_if_data *sdata =
2800 container_of(work, struct ieee80211_sub_if_data,
2801 u.mgd.csa_connection_drop_work);
2803 __ieee80211_disconnect(sdata);
2806 void ieee80211_beacon_loss(struct ieee80211_vif *vif)
2808 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2809 struct ieee80211_hw *hw = &sdata->local->hw;
2811 trace_api_beacon_loss(sdata);
2813 sdata->u.mgd.connection_loss = false;
2814 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2816 EXPORT_SYMBOL(ieee80211_beacon_loss);
2818 void ieee80211_connection_loss(struct ieee80211_vif *vif)
2820 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2821 struct ieee80211_hw *hw = &sdata->local->hw;
2823 trace_api_connection_loss(sdata);
2825 sdata->u.mgd.connection_loss = true;
2826 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2828 EXPORT_SYMBOL(ieee80211_connection_loss);
2831 static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
2834 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2836 sdata_assert_lock(sdata);
2840 * we are not authenticated yet, the only timer that could be
2841 * running is the timeout for the authentication response which
2842 * which is not relevant anymore.
2844 del_timer_sync(&sdata->u.mgd.timer);
2845 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
2847 eth_zero_addr(sdata->u.mgd.bssid);
2848 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
2849 sdata->u.mgd.flags = 0;
2850 mutex_lock(&sdata->local->mtx);
2851 ieee80211_vif_release_channel(sdata);
2852 mutex_unlock(&sdata->local->mtx);
2855 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
2857 sdata->u.mgd.auth_data = NULL;
2860 static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
2861 bool assoc, bool abandon)
2863 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2865 sdata_assert_lock(sdata);
2869 * we are not associated yet, the only timer that could be
2870 * running is the timeout for the association response which
2871 * which is not relevant anymore.
2873 del_timer_sync(&sdata->u.mgd.timer);
2874 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2876 eth_zero_addr(sdata->u.mgd.bssid);
2877 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
2878 sdata->u.mgd.flags = 0;
2879 sdata->vif.mu_mimo_owner = false;
2881 mutex_lock(&sdata->local->mtx);
2882 ieee80211_vif_release_channel(sdata);
2883 mutex_unlock(&sdata->local->mtx);
2886 cfg80211_abandon_assoc(sdata->dev, assoc_data->bss);
2890 sdata->u.mgd.assoc_data = NULL;
2893 static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
2894 struct ieee80211_mgmt *mgmt, size_t len)
2896 struct ieee80211_local *local = sdata->local;
2897 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2899 struct ieee802_11_elems elems;
2902 pos = mgmt->u.auth.variable;
2903 ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems,
2904 mgmt->bssid, auth_data->bss->bssid);
2905 if (!elems.challenge)
2907 auth_data->expected_transaction = 4;
2908 drv_mgd_prepare_tx(sdata->local, sdata, 0);
2909 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
2910 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
2911 IEEE80211_TX_INTFL_MLME_CONN_TX;
2912 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
2913 elems.challenge - 2, elems.challenge_len + 2,
2914 auth_data->bss->bssid, auth_data->bss->bssid,
2915 auth_data->key, auth_data->key_len,
2916 auth_data->key_idx, tx_flags);
2919 static bool ieee80211_mark_sta_auth(struct ieee80211_sub_if_data *sdata,
2922 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2923 struct sta_info *sta;
2926 sdata_info(sdata, "authenticated\n");
2927 ifmgd->auth_data->done = true;
2928 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
2929 ifmgd->auth_data->timeout_started = true;
2930 run_again(sdata, ifmgd->auth_data->timeout);
2932 /* move station state to auth */
2933 mutex_lock(&sdata->local->sta_mtx);
2934 sta = sta_info_get(sdata, bssid);
2936 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
2940 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
2941 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
2947 mutex_unlock(&sdata->local->sta_mtx);
2951 static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
2952 struct ieee80211_mgmt *mgmt, size_t len)
2954 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2956 u16 auth_alg, auth_transaction, status_code;
2957 struct ieee80211_event event = {
2959 .u.mlme.data = AUTH_EVENT,
2962 sdata_assert_lock(sdata);
2967 if (!ifmgd->auth_data || ifmgd->auth_data->done)
2970 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2972 if (!ether_addr_equal(bssid, mgmt->bssid))
2975 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
2976 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
2977 status_code = le16_to_cpu(mgmt->u.auth.status_code);
2979 if (auth_alg != ifmgd->auth_data->algorithm ||
2980 (auth_alg != WLAN_AUTH_SAE &&
2981 auth_transaction != ifmgd->auth_data->expected_transaction) ||
2982 (auth_alg == WLAN_AUTH_SAE &&
2983 (auth_transaction < ifmgd->auth_data->expected_transaction ||
2984 auth_transaction > 2))) {
2985 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2986 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
2988 ifmgd->auth_data->expected_transaction);
2992 if (status_code != WLAN_STATUS_SUCCESS) {
2993 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
2995 if (auth_alg == WLAN_AUTH_SAE &&
2996 (status_code == WLAN_STATUS_ANTI_CLOG_REQUIRED ||
2997 (auth_transaction == 1 &&
2998 (status_code == WLAN_STATUS_SAE_HASH_TO_ELEMENT ||
2999 status_code == WLAN_STATUS_SAE_PK))))
3002 sdata_info(sdata, "%pM denied authentication (status %d)\n",
3003 mgmt->sa, status_code);
3004 ieee80211_destroy_auth_data(sdata, false);
3005 event.u.mlme.status = MLME_DENIED;
3006 event.u.mlme.reason = status_code;
3007 drv_event_callback(sdata->local, sdata, &event);
3011 switch (ifmgd->auth_data->algorithm) {
3012 case WLAN_AUTH_OPEN:
3013 case WLAN_AUTH_LEAP:
3016 case WLAN_AUTH_FILS_SK:
3017 case WLAN_AUTH_FILS_SK_PFS:
3018 case WLAN_AUTH_FILS_PK:
3020 case WLAN_AUTH_SHARED_KEY:
3021 if (ifmgd->auth_data->expected_transaction != 4) {
3022 ieee80211_auth_challenge(sdata, mgmt, len);
3023 /* need another frame */
3028 WARN_ONCE(1, "invalid auth alg %d",
3029 ifmgd->auth_data->algorithm);
3033 event.u.mlme.status = MLME_SUCCESS;
3034 drv_event_callback(sdata->local, sdata, &event);
3035 if (ifmgd->auth_data->algorithm != WLAN_AUTH_SAE ||
3036 (auth_transaction == 2 &&
3037 ifmgd->auth_data->expected_transaction == 2)) {
3038 if (!ieee80211_mark_sta_auth(sdata, bssid))
3039 return; /* ignore frame -- wait for timeout */
3040 } else if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
3041 auth_transaction == 2) {
3042 sdata_info(sdata, "SAE peer confirmed\n");
3043 ifmgd->auth_data->peer_confirmed = true;
3046 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
3049 #define case_WLAN(type) \
3050 case WLAN_REASON_##type: return #type
3052 const char *ieee80211_get_reason_code_string(u16 reason_code)
3054 switch (reason_code) {
3055 case_WLAN(UNSPECIFIED);
3056 case_WLAN(PREV_AUTH_NOT_VALID);
3057 case_WLAN(DEAUTH_LEAVING);
3058 case_WLAN(DISASSOC_DUE_TO_INACTIVITY);
3059 case_WLAN(DISASSOC_AP_BUSY);
3060 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA);
3061 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA);
3062 case_WLAN(DISASSOC_STA_HAS_LEFT);
3063 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH);
3064 case_WLAN(DISASSOC_BAD_POWER);
3065 case_WLAN(DISASSOC_BAD_SUPP_CHAN);
3066 case_WLAN(INVALID_IE);
3067 case_WLAN(MIC_FAILURE);
3068 case_WLAN(4WAY_HANDSHAKE_TIMEOUT);
3069 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT);
3070 case_WLAN(IE_DIFFERENT);
3071 case_WLAN(INVALID_GROUP_CIPHER);
3072 case_WLAN(INVALID_PAIRWISE_CIPHER);
3073 case_WLAN(INVALID_AKMP);
3074 case_WLAN(UNSUPP_RSN_VERSION);
3075 case_WLAN(INVALID_RSN_IE_CAP);
3076 case_WLAN(IEEE8021X_FAILED);
3077 case_WLAN(CIPHER_SUITE_REJECTED);
3078 case_WLAN(DISASSOC_UNSPECIFIED_QOS);
3079 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH);
3080 case_WLAN(DISASSOC_LOW_ACK);
3081 case_WLAN(DISASSOC_QAP_EXCEED_TXOP);
3082 case_WLAN(QSTA_LEAVE_QBSS);
3083 case_WLAN(QSTA_NOT_USE);
3084 case_WLAN(QSTA_REQUIRE_SETUP);
3085 case_WLAN(QSTA_TIMEOUT);
3086 case_WLAN(QSTA_CIPHER_NOT_SUPP);
3087 case_WLAN(MESH_PEER_CANCELED);
3088 case_WLAN(MESH_MAX_PEERS);
3089 case_WLAN(MESH_CONFIG);
3090 case_WLAN(MESH_CLOSE);
3091 case_WLAN(MESH_MAX_RETRIES);
3092 case_WLAN(MESH_CONFIRM_TIMEOUT);
3093 case_WLAN(MESH_INVALID_GTK);
3094 case_WLAN(MESH_INCONSISTENT_PARAM);
3095 case_WLAN(MESH_INVALID_SECURITY);
3096 case_WLAN(MESH_PATH_ERROR);
3097 case_WLAN(MESH_PATH_NOFORWARD);
3098 case_WLAN(MESH_PATH_DEST_UNREACHABLE);
3099 case_WLAN(MAC_EXISTS_IN_MBSS);
3100 case_WLAN(MESH_CHAN_REGULATORY);
3101 case_WLAN(MESH_CHAN);
3102 default: return "<unknown>";
3106 static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
3107 struct ieee80211_mgmt *mgmt, size_t len)
3109 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3110 u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
3112 sdata_assert_lock(sdata);
3117 if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) {
3118 ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code);
3122 if (ifmgd->associated &&
3123 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) {
3124 const u8 *bssid = ifmgd->associated->bssid;
3126 sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
3128 ieee80211_get_reason_code_string(reason_code));
3130 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
3132 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false,
3137 if (ifmgd->assoc_data &&
3138 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
3139 const u8 *bssid = ifmgd->assoc_data->bss->bssid;
3142 "deauthenticated from %pM while associating (Reason: %u=%s)\n",
3144 ieee80211_get_reason_code_string(reason_code));
3146 ieee80211_destroy_assoc_data(sdata, false, true);
3148 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
3154 static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
3155 struct ieee80211_mgmt *mgmt, size_t len)
3157 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3160 sdata_assert_lock(sdata);
3165 if (!ifmgd->associated ||
3166 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
3169 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
3171 if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) {
3172 ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code);
3176 sdata_info(sdata, "disassociated from %pM (Reason: %u=%s)\n",
3177 mgmt->sa, reason_code,
3178 ieee80211_get_reason_code_string(reason_code));
3180 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
3182 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code);
3185 static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
3186 u8 *supp_rates, unsigned int supp_rates_len,
3187 u32 *rates, u32 *basic_rates,
3188 bool *have_higher_than_11mbit,
3189 int *min_rate, int *min_rate_index,
3194 for (i = 0; i < supp_rates_len; i++) {
3195 int rate = supp_rates[i] & 0x7f;
3196 bool is_basic = !!(supp_rates[i] & 0x80);
3198 if ((rate * 5 * (1 << shift)) > 110)
3199 *have_higher_than_11mbit = true;
3202 * Skip HT, VHT and HE BSS membership selectors since they're
3205 * Note: Even though the membership selector and the basic
3206 * rate flag share the same bit, they are not exactly
3209 if (supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY) ||
3210 supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY) ||
3211 supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_HE_PHY))
3214 for (j = 0; j < sband->n_bitrates; j++) {
3215 struct ieee80211_rate *br;
3218 br = &sband->bitrates[j];
3220 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3221 if (brate == rate) {
3224 *basic_rates |= BIT(j);
3225 if ((rate * 5) < *min_rate) {
3226 *min_rate = rate * 5;
3227 *min_rate_index = j;
3235 static bool ieee80211_twt_req_supported(const struct sta_info *sta,
3236 const struct ieee802_11_elems *elems)
3238 if (elems->ext_capab_len < 10)
3241 if (!(elems->ext_capab[9] & WLAN_EXT_CAPA10_TWT_RESPONDER_SUPPORT))
3244 return sta->sta.he_cap.he_cap_elem.mac_cap_info[0] &
3245 IEEE80211_HE_MAC_CAP0_TWT_RES;
3248 static int ieee80211_recalc_twt_req(struct ieee80211_sub_if_data *sdata,
3249 struct sta_info *sta,
3250 struct ieee802_11_elems *elems)
3252 bool twt = ieee80211_twt_req_supported(sta, elems);
3254 if (sdata->vif.bss_conf.twt_requester != twt) {
3255 sdata->vif.bss_conf.twt_requester = twt;
3256 return BSS_CHANGED_TWT;
3261 static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
3262 struct cfg80211_bss *cbss,
3263 struct ieee80211_mgmt *mgmt, size_t len,
3264 struct ieee802_11_elems *elems)
3266 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3267 struct ieee80211_local *local = sdata->local;
3268 struct ieee80211_supported_band *sband;
3269 struct sta_info *sta;
3270 u16 capab_info, aid;
3271 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3272 const struct cfg80211_bss_ies *bss_ies = NULL;
3273 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
3274 bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
3275 bool is_s1g = cbss->channel->band == NL80211_BAND_S1GHZ;
3281 /* AssocResp and ReassocResp have identical structure */
3283 pos = mgmt->u.assoc_resp.variable;
3284 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
3286 pos = (u8 *) mgmt->u.s1g_assoc_resp.variable;
3289 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
3290 ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, elems,
3291 mgmt->bssid, assoc_data->bss->bssid);
3293 if (elems->aid_resp)
3294 aid = le16_to_cpu(elems->aid_resp->aid);
3297 * The 5 MSB of the AID field are reserved
3298 * (802.11-2016 9.4.1.8 AID field)
3302 ifmgd->broken_ap = false;
3304 if (aid == 0 || aid > IEEE80211_MAX_AID) {
3305 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
3308 ifmgd->broken_ap = true;
3311 if (!is_s1g && !elems->supp_rates) {
3312 sdata_info(sdata, "no SuppRates element in AssocResp\n");
3316 sdata->vif.bss_conf.aid = aid;
3317 ifmgd->tdls_chan_switch_prohibited =
3318 elems->ext_capab && elems->ext_capab_len >= 5 &&
3319 (elems->ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED);
3322 * Some APs are erroneously not including some information in their
3323 * (re)association response frames. Try to recover by using the data
3324 * from the beacon or probe response. This seems to afflict mobile
3325 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
3326 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
3329 ((assoc_data->wmm && !elems->wmm_param) ||
3330 (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
3331 (!elems->ht_cap_elem || !elems->ht_operation)) ||
3332 (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
3333 (!elems->vht_cap_elem || !elems->vht_operation)))) {
3334 const struct cfg80211_bss_ies *ies;
3335 struct ieee802_11_elems bss_elems;
3338 ies = rcu_dereference(cbss->ies);
3340 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
3346 ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
3349 assoc_data->bss->bssid);
3350 if (assoc_data->wmm &&
3351 !elems->wmm_param && bss_elems.wmm_param) {
3352 elems->wmm_param = bss_elems.wmm_param;
3354 "AP bug: WMM param missing from AssocResp\n");
3358 * Also check if we requested HT/VHT, otherwise the AP doesn't
3359 * have to include the IEs in the (re)association response.
3361 if (!elems->ht_cap_elem && bss_elems.ht_cap_elem &&
3362 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
3363 elems->ht_cap_elem = bss_elems.ht_cap_elem;
3365 "AP bug: HT capability missing from AssocResp\n");
3367 if (!elems->ht_operation && bss_elems.ht_operation &&
3368 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
3369 elems->ht_operation = bss_elems.ht_operation;
3371 "AP bug: HT operation missing from AssocResp\n");
3373 if (!elems->vht_cap_elem && bss_elems.vht_cap_elem &&
3374 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
3375 elems->vht_cap_elem = bss_elems.vht_cap_elem;
3377 "AP bug: VHT capa missing from AssocResp\n");
3379 if (!elems->vht_operation && bss_elems.vht_operation &&
3380 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
3381 elems->vht_operation = bss_elems.vht_operation;
3383 "AP bug: VHT operation missing from AssocResp\n");
3388 * We previously checked these in the beacon/probe response, so
3389 * they should be present here. This is just a safety net.
3391 if (!is_6ghz && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
3392 (!elems->wmm_param || !elems->ht_cap_elem || !elems->ht_operation)) {
3394 "HT AP is missing WMM params or HT capability/operation\n");
3399 if (!is_6ghz && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
3400 (!elems->vht_cap_elem || !elems->vht_operation)) {
3402 "VHT AP is missing VHT capability/operation\n");
3407 if (is_6ghz && !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
3408 !elems->he_6ghz_capa) {
3410 "HE 6 GHz AP is missing HE 6 GHz band capability\n");
3415 mutex_lock(&sdata->local->sta_mtx);
3417 * station info was already allocated and inserted before
3418 * the association and should be available to us
3420 sta = sta_info_get(sdata, cbss->bssid);
3421 if (WARN_ON(!sta)) {
3422 mutex_unlock(&sdata->local->sta_mtx);
3427 sband = ieee80211_get_sband(sdata);
3429 mutex_unlock(&sdata->local->sta_mtx);
3434 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
3435 (!elems->he_cap || !elems->he_operation)) {
3436 mutex_unlock(&sdata->local->sta_mtx);
3438 "HE AP is missing HE capability/operation\n");
3443 /* Set up internal HT/VHT capabilities */
3444 if (elems->ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
3445 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
3446 elems->ht_cap_elem, sta);
3448 if (elems->vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
3449 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
3450 elems->vht_cap_elem, sta);
3452 if (elems->he_operation && !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
3454 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
3457 elems->he_6ghz_capa,
3460 bss_conf->he_support = sta->sta.he_cap.has_he;
3461 if (elems->rsnx && elems->rsnx_len &&
3462 (elems->rsnx[0] & WLAN_RSNX_CAPA_PROTECTED_TWT) &&
3463 wiphy_ext_feature_isset(local->hw.wiphy,
3464 NL80211_EXT_FEATURE_PROTECTED_TWT))
3465 bss_conf->twt_protected = true;
3467 bss_conf->twt_protected = false;
3469 changed |= ieee80211_recalc_twt_req(sdata, sta, elems);
3471 bss_conf->he_support = false;
3472 bss_conf->twt_requester = false;
3473 bss_conf->twt_protected = false;
3476 if (bss_conf->he_support) {
3477 bss_conf->he_bss_color.color =
3478 le32_get_bits(elems->he_operation->he_oper_params,
3479 IEEE80211_HE_OPERATION_BSS_COLOR_MASK);
3480 bss_conf->he_bss_color.partial =
3481 le32_get_bits(elems->he_operation->he_oper_params,
3482 IEEE80211_HE_OPERATION_PARTIAL_BSS_COLOR);
3483 bss_conf->he_bss_color.enabled =
3484 !le32_get_bits(elems->he_operation->he_oper_params,
3485 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3487 if (bss_conf->he_bss_color.enabled)
3488 changed |= BSS_CHANGED_HE_BSS_COLOR;
3490 bss_conf->htc_trig_based_pkt_ext =
3491 le32_get_bits(elems->he_operation->he_oper_params,
3492 IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK);
3493 bss_conf->frame_time_rts_th =
3494 le32_get_bits(elems->he_operation->he_oper_params,
3495 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3497 bss_conf->multi_sta_back_32bit =
3498 sta->sta.he_cap.he_cap_elem.mac_cap_info[2] &
3499 IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP;
3501 bss_conf->ack_enabled =
3502 sta->sta.he_cap.he_cap_elem.mac_cap_info[2] &
3503 IEEE80211_HE_MAC_CAP2_ACK_EN;
3505 bss_conf->uora_exists = !!elems->uora_element;
3506 if (elems->uora_element)
3507 bss_conf->uora_ocw_range = elems->uora_element[0];
3509 ieee80211_he_op_ie_to_bss_conf(&sdata->vif, elems->he_operation);
3510 ieee80211_he_spr_ie_to_bss_conf(&sdata->vif, elems->he_spr);
3511 /* TODO: OPEN: what happens if BSS color disable is set? */
3514 if (cbss->transmitted_bss) {
3515 bss_conf->nontransmitted = true;
3516 ether_addr_copy(bss_conf->transmitter_bssid,
3517 cbss->transmitted_bss->bssid);
3518 bss_conf->bssid_indicator = cbss->max_bssid_indicator;
3519 bss_conf->bssid_index = cbss->bssid_index;
3523 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
3524 * in their association response, so ignore that data for our own
3525 * configuration. If it changed since the last beacon, we'll get the
3526 * next beacon and update then.
3530 * If an operating mode notification IE is present, override the
3531 * NSS calculation (that would be done in rate_control_rate_init())
3532 * and use the # of streams from that element.
3534 if (elems->opmode_notif &&
3535 !(*elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
3538 nss = *elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
3539 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
3541 sta->sta.rx_nss = nss;
3544 rate_control_rate_init(sta);
3546 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) {
3547 set_sta_flag(sta, WLAN_STA_MFP);
3548 sta->sta.mfp = true;
3550 sta->sta.mfp = false;
3553 sta->sta.wme = (elems->wmm_param || elems->s1g_capab) &&
3554 local->hw.queues >= IEEE80211_NUM_ACS;
3556 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
3557 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
3558 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
3561 "failed to move station %pM to desired state\n",
3563 WARN_ON(__sta_info_destroy(sta));
3564 mutex_unlock(&sdata->local->sta_mtx);
3569 if (sdata->wdev.use_4addr)
3570 drv_sta_set_4addr(local, sdata, &sta->sta, true);
3572 mutex_unlock(&sdata->local->sta_mtx);
3575 * Always handle WMM once after association regardless
3576 * of the first value the AP uses. Setting -1 here has
3577 * that effect because the AP values is an unsigned
3580 ifmgd->wmm_last_param_set = -1;
3581 ifmgd->mu_edca_last_param_set = -1;
3583 if (ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
3584 ieee80211_set_wmm_default(sdata, false, false);
3585 } else if (!ieee80211_sta_wmm_params(local, sdata, elems->wmm_param,
3586 elems->wmm_param_len,
3587 elems->mu_edca_param_set)) {
3588 /* still enable QoS since we might have HT/VHT */
3589 ieee80211_set_wmm_default(sdata, false, true);
3590 /* set the disable-WMM flag in this case to disable
3591 * tracking WMM parameter changes in the beacon if
3592 * the parameters weren't actually valid. Doing so
3593 * avoids changing parameters very strangely when
3594 * the AP is going back and forth between valid and
3595 * invalid parameters.
3597 ifmgd->flags |= IEEE80211_STA_DISABLE_WMM;
3599 changed |= BSS_CHANGED_QOS;
3601 if (elems->max_idle_period_ie) {
3602 bss_conf->max_idle_period =
3603 le16_to_cpu(elems->max_idle_period_ie->max_idle_period);
3604 bss_conf->protected_keep_alive =
3605 !!(elems->max_idle_period_ie->idle_options &
3606 WLAN_IDLE_OPTIONS_PROTECTED_KEEP_ALIVE);
3607 changed |= BSS_CHANGED_KEEP_ALIVE;
3609 bss_conf->max_idle_period = 0;
3610 bss_conf->protected_keep_alive = false;
3613 /* set assoc capability (AID was already set earlier),
3614 * ieee80211_set_associated() will tell the driver */
3615 bss_conf->assoc_capability = capab_info;
3616 ieee80211_set_associated(sdata, cbss, changed);
3619 * If we're using 4-addr mode, let the AP know that we're
3620 * doing so, so that it can create the STA VLAN on its side
3622 if (ifmgd->use_4addr)
3623 ieee80211_send_4addr_nullfunc(local, sdata);
3626 * Start timer to probe the connection to the AP now.
3627 * Also start the timer that will detect beacon loss.
3629 ieee80211_sta_reset_beacon_monitor(sdata);
3630 ieee80211_sta_reset_conn_monitor(sdata);
3638 static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
3639 struct ieee80211_mgmt *mgmt,
3642 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3643 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
3644 u16 capab_info, status_code, aid;
3645 struct ieee802_11_elems elems;
3646 int ac, uapsd_queues = -1;
3649 struct cfg80211_bss *cbss;
3650 struct ieee80211_event event = {
3652 .u.mlme.data = ASSOC_EVENT,
3655 sdata_assert_lock(sdata);
3660 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
3663 cbss = assoc_data->bss;
3666 * AssocResp and ReassocResp have identical structure, so process both
3667 * of them in this function.
3673 reassoc = ieee80211_is_reassoc_resp(mgmt->frame_control);
3674 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
3675 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
3676 pos = mgmt->u.assoc_resp.variable;
3677 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
3678 if (cbss->channel->band == NL80211_BAND_S1GHZ) {
3679 pos = (u8 *) mgmt->u.s1g_assoc_resp.variable;
3684 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
3685 reassoc ? "Rea" : "A", mgmt->sa,
3686 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
3688 if (assoc_data->fils_kek_len &&
3689 fils_decrypt_assoc_resp(sdata, (u8 *)mgmt, &len, assoc_data) < 0)
3692 ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems,
3693 mgmt->bssid, assoc_data->bss->bssid);
3695 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
3696 elems.timeout_int &&
3697 elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
3699 tu = le32_to_cpu(elems.timeout_int->value);
3700 ms = tu * 1024 / 1000;
3702 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
3704 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
3705 assoc_data->timeout_started = true;
3706 if (ms > IEEE80211_ASSOC_TIMEOUT)
3707 run_again(sdata, assoc_data->timeout);
3711 if (status_code != WLAN_STATUS_SUCCESS) {
3712 sdata_info(sdata, "%pM denied association (code=%d)\n",
3713 mgmt->sa, status_code);
3714 ieee80211_destroy_assoc_data(sdata, false, false);
3715 event.u.mlme.status = MLME_DENIED;
3716 event.u.mlme.reason = status_code;
3717 drv_event_callback(sdata->local, sdata, &event);
3719 if (!ieee80211_assoc_success(sdata, cbss, mgmt, len, &elems)) {
3720 /* oops -- internal error -- send timeout for now */
3721 ieee80211_destroy_assoc_data(sdata, false, false);
3722 cfg80211_assoc_timeout(sdata->dev, cbss);
3725 event.u.mlme.status = MLME_SUCCESS;
3726 drv_event_callback(sdata->local, sdata, &event);
3727 sdata_info(sdata, "associated\n");
3730 * destroy assoc_data afterwards, as otherwise an idle
3731 * recalc after assoc_data is NULL but before associated
3732 * is set can cause the interface to go idle
3734 ieee80211_destroy_assoc_data(sdata, true, false);
3736 /* get uapsd queues configuration */
3738 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
3739 if (sdata->tx_conf[ac].uapsd)
3740 uapsd_queues |= ieee80211_ac_to_qos_mask[ac];
3743 cfg80211_rx_assoc_resp(sdata->dev, cbss, (u8 *)mgmt, len, uapsd_queues,
3744 ifmgd->assoc_req_ies, ifmgd->assoc_req_ies_len);
3747 static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
3748 struct ieee80211_mgmt *mgmt, size_t len,
3749 struct ieee80211_rx_status *rx_status)
3751 struct ieee80211_local *local = sdata->local;
3752 struct ieee80211_bss *bss;
3753 struct ieee80211_channel *channel;
3755 sdata_assert_lock(sdata);
3757 channel = ieee80211_get_channel_khz(local->hw.wiphy,
3758 ieee80211_rx_status_to_khz(rx_status));
3762 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, channel);
3764 sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
3765 ieee80211_rx_bss_put(local, bss);
3770 static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
3771 struct sk_buff *skb)
3773 struct ieee80211_mgmt *mgmt = (void *)skb->data;
3774 struct ieee80211_if_managed *ifmgd;
3775 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
3776 struct ieee80211_channel *channel;
3777 size_t baselen, len = skb->len;
3779 ifmgd = &sdata->u.mgd;
3781 sdata_assert_lock(sdata);
3784 * According to Draft P802.11ax D6.0 clause 26.17.2.3.2:
3785 * "If a 6 GHz AP receives a Probe Request frame and responds with
3786 * a Probe Response frame [..], the Address 1 field of the Probe
3787 * Response frame shall be set to the broadcast address [..]"
3788 * So, on 6GHz band we should also accept broadcast responses.
3790 channel = ieee80211_get_channel(sdata->local->hw.wiphy,
3795 if (!ether_addr_equal(mgmt->da, sdata->vif.addr) &&
3796 (channel->band != NL80211_BAND_6GHZ ||
3797 !is_broadcast_ether_addr(mgmt->da)))
3798 return; /* ignore ProbeResp to foreign address */
3800 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
3804 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
3806 if (ifmgd->associated &&
3807 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
3808 ieee80211_reset_ap_probe(sdata);
3812 * This is the canonical list of information elements we care about,
3813 * the filter code also gives us all changes to the Microsoft OUI
3814 * (00:50:F2) vendor IE which is used for WMM which we need to track,
3815 * as well as the DTPC IE (part of the Cisco OUI) used for signaling
3816 * changes to requested client power.
3818 * We implement beacon filtering in software since that means we can
3819 * avoid processing the frame here and in cfg80211, and userspace
3820 * will not be able to tell whether the hardware supports it or not.
3822 * XXX: This list needs to be dynamic -- userspace needs to be able to
3823 * add items it requires. It also needs to be able to tell us to
3824 * look out for other vendor IEs.
3826 static const u64 care_about_ies =
3827 (1ULL << WLAN_EID_COUNTRY) |
3828 (1ULL << WLAN_EID_ERP_INFO) |
3829 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
3830 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
3831 (1ULL << WLAN_EID_HT_CAPABILITY) |
3832 (1ULL << WLAN_EID_HT_OPERATION) |
3833 (1ULL << WLAN_EID_EXT_CHANSWITCH_ANN);
3835 static void ieee80211_handle_beacon_sig(struct ieee80211_sub_if_data *sdata,
3836 struct ieee80211_if_managed *ifmgd,
3837 struct ieee80211_bss_conf *bss_conf,
3838 struct ieee80211_local *local,
3839 struct ieee80211_rx_status *rx_status)
3841 /* Track average RSSI from the Beacon frames of the current AP */
3843 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
3844 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
3845 ewma_beacon_signal_init(&ifmgd->ave_beacon_signal);
3846 ifmgd->last_cqm_event_signal = 0;
3847 ifmgd->count_beacon_signal = 1;
3848 ifmgd->last_ave_beacon_signal = 0;
3850 ifmgd->count_beacon_signal++;
3853 ewma_beacon_signal_add(&ifmgd->ave_beacon_signal, -rx_status->signal);
3855 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
3856 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
3857 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3858 int last_sig = ifmgd->last_ave_beacon_signal;
3859 struct ieee80211_event event = {
3864 * if signal crosses either of the boundaries, invoke callback
3865 * with appropriate parameters
3867 if (sig > ifmgd->rssi_max_thold &&
3868 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
3869 ifmgd->last_ave_beacon_signal = sig;
3870 event.u.rssi.data = RSSI_EVENT_HIGH;
3871 drv_event_callback(local, sdata, &event);
3872 } else if (sig < ifmgd->rssi_min_thold &&
3873 (last_sig >= ifmgd->rssi_max_thold ||
3875 ifmgd->last_ave_beacon_signal = sig;
3876 event.u.rssi.data = RSSI_EVENT_LOW;
3877 drv_event_callback(local, sdata, &event);
3881 if (bss_conf->cqm_rssi_thold &&
3882 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
3883 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
3884 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3885 int last_event = ifmgd->last_cqm_event_signal;
3886 int thold = bss_conf->cqm_rssi_thold;
3887 int hyst = bss_conf->cqm_rssi_hyst;
3890 (last_event == 0 || sig < last_event - hyst)) {
3891 ifmgd->last_cqm_event_signal = sig;
3892 ieee80211_cqm_rssi_notify(
3894 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3896 } else if (sig > thold &&
3897 (last_event == 0 || sig > last_event + hyst)) {
3898 ifmgd->last_cqm_event_signal = sig;
3899 ieee80211_cqm_rssi_notify(
3901 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3906 if (bss_conf->cqm_rssi_low &&
3907 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
3908 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3909 int last_event = ifmgd->last_cqm_event_signal;
3910 int low = bss_conf->cqm_rssi_low;
3911 int high = bss_conf->cqm_rssi_high;
3914 (last_event == 0 || last_event >= low)) {
3915 ifmgd->last_cqm_event_signal = sig;
3916 ieee80211_cqm_rssi_notify(
3918 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3920 } else if (sig > high &&
3921 (last_event == 0 || last_event <= high)) {
3922 ifmgd->last_cqm_event_signal = sig;
3923 ieee80211_cqm_rssi_notify(
3925 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3931 static bool ieee80211_rx_our_beacon(const u8 *tx_bssid,
3932 struct cfg80211_bss *bss)
3934 if (ether_addr_equal(tx_bssid, bss->bssid))
3936 if (!bss->transmitted_bss)
3938 return ether_addr_equal(tx_bssid, bss->transmitted_bss->bssid);
3941 static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
3942 struct ieee80211_hdr *hdr, size_t len,
3943 struct ieee80211_rx_status *rx_status)
3945 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3946 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3947 struct ieee80211_mgmt *mgmt = (void *) hdr;
3949 struct ieee802_11_elems elems;
3950 struct ieee80211_local *local = sdata->local;
3951 struct ieee80211_chanctx_conf *chanctx_conf;
3952 struct ieee80211_channel *chan;
3953 struct sta_info *sta;
3958 u8 *bssid, *variable = mgmt->u.beacon.variable;
3959 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
3961 sdata_assert_lock(sdata);
3963 /* Process beacon from the current BSS */
3964 bssid = ieee80211_get_bssid(hdr, len, sdata->vif.type);
3965 if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
3966 struct ieee80211_ext *ext = (void *) mgmt;
3968 if (ieee80211_is_s1g_short_beacon(ext->frame_control))
3969 variable = ext->u.s1g_short_beacon.variable;
3971 variable = ext->u.s1g_beacon.variable;
3974 baselen = (u8 *) variable - (u8 *) mgmt;
3979 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3980 if (!chanctx_conf) {
3985 if (ieee80211_rx_status_to_khz(rx_status) !=
3986 ieee80211_channel_to_khz(chanctx_conf->def.chan)) {
3990 chan = chanctx_conf->def.chan;
3993 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
3994 ieee80211_rx_our_beacon(bssid, ifmgd->assoc_data->bss)) {
3995 ieee802_11_parse_elems(variable,
3996 len - baselen, false, &elems,
3998 ifmgd->assoc_data->bss->bssid);
4000 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
4002 if (elems.dtim_period)
4003 ifmgd->dtim_period = elems.dtim_period;
4004 ifmgd->have_beacon = true;
4005 ifmgd->assoc_data->need_beacon = false;
4006 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
4007 sdata->vif.bss_conf.sync_tsf =
4008 le64_to_cpu(mgmt->u.beacon.timestamp);
4009 sdata->vif.bss_conf.sync_device_ts =
4010 rx_status->device_timestamp;
4011 sdata->vif.bss_conf.sync_dtim_count = elems.dtim_count;
4014 if (elems.mbssid_config_ie)
4015 bss_conf->profile_periodicity =
4016 elems.mbssid_config_ie->profile_periodicity;
4018 if (elems.ext_capab_len >= 11 &&
4019 (elems.ext_capab[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
4020 bss_conf->ema_ap = true;
4022 /* continue assoc process */
4023 ifmgd->assoc_data->timeout = jiffies;
4024 ifmgd->assoc_data->timeout_started = true;
4025 run_again(sdata, ifmgd->assoc_data->timeout);
4029 if (!ifmgd->associated ||
4030 !ieee80211_rx_our_beacon(bssid, ifmgd->associated))
4032 bssid = ifmgd->associated->bssid;
4034 if (!(rx_status->flag & RX_FLAG_NO_SIGNAL_VAL))
4035 ieee80211_handle_beacon_sig(sdata, ifmgd, bss_conf,
4038 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
4039 mlme_dbg_ratelimited(sdata,
4040 "cancelling AP probe due to a received beacon\n");
4041 ieee80211_reset_ap_probe(sdata);
4045 * Push the beacon loss detection into the future since
4046 * we are processing a beacon from the AP just now.
4048 ieee80211_sta_reset_beacon_monitor(sdata);
4050 /* TODO: CRC urrently not calculated on S1G Beacon Compatibility
4051 * element (which carries the beacon interval). Don't forget to add a
4052 * bit to care_about_ies[] above if mac80211 is interested in a
4053 * changing S1G element.
4055 if (!ieee80211_is_s1g_beacon(hdr->frame_control))
4056 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
4057 ncrc = ieee802_11_parse_elems_crc(variable,
4058 len - baselen, false, &elems,
4059 care_about_ies, ncrc,
4060 mgmt->bssid, bssid);
4062 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
4063 ieee80211_check_tim(elems.tim, elems.tim_len, bss_conf->aid)) {
4064 if (local->hw.conf.dynamic_ps_timeout > 0) {
4065 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
4066 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
4067 ieee80211_hw_config(local,
4068 IEEE80211_CONF_CHANGE_PS);
4070 ieee80211_send_nullfunc(local, sdata, false);
4071 } else if (!local->pspolling && sdata->u.mgd.powersave) {
4072 local->pspolling = true;
4075 * Here is assumed that the driver will be
4076 * able to send ps-poll frame and receive a
4077 * response even though power save mode is
4078 * enabled, but some drivers might require
4079 * to disable power save here. This needs
4080 * to be investigated.
4082 ieee80211_send_pspoll(local, sdata);
4086 if (sdata->vif.p2p ||
4087 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
4088 struct ieee80211_p2p_noa_attr noa = {};
4091 ret = cfg80211_get_p2p_attr(variable,
4093 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
4094 (u8 *) &noa, sizeof(noa));
4096 if (sdata->u.mgd.p2p_noa_index != noa.index) {
4097 /* valid noa_attr and index changed */
4098 sdata->u.mgd.p2p_noa_index = noa.index;
4099 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
4100 changed |= BSS_CHANGED_P2P_PS;
4102 * make sure we update all information, the CRC
4103 * mechanism doesn't look at P2P attributes.
4105 ifmgd->beacon_crc_valid = false;
4107 } else if (sdata->u.mgd.p2p_noa_index != -1) {
4108 /* noa_attr not found and we had valid noa_attr before */
4109 sdata->u.mgd.p2p_noa_index = -1;
4110 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
4111 changed |= BSS_CHANGED_P2P_PS;
4112 ifmgd->beacon_crc_valid = false;
4116 if (ifmgd->csa_waiting_bcn)
4117 ieee80211_chswitch_post_beacon(sdata);
4120 * Update beacon timing and dtim count on every beacon appearance. This
4121 * will allow the driver to use the most updated values. Do it before
4122 * comparing this one with last received beacon.
4123 * IMPORTANT: These parameters would possibly be out of sync by the time
4124 * the driver will use them. The synchronized view is currently
4125 * guaranteed only in certain callbacks.
4127 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY) &&
4128 !ieee80211_is_s1g_beacon(hdr->frame_control)) {
4129 sdata->vif.bss_conf.sync_tsf =
4130 le64_to_cpu(mgmt->u.beacon.timestamp);
4131 sdata->vif.bss_conf.sync_device_ts =
4132 rx_status->device_timestamp;
4133 sdata->vif.bss_conf.sync_dtim_count = elems.dtim_count;
4136 if ((ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) ||
4137 ieee80211_is_s1g_short_beacon(mgmt->frame_control))
4139 ifmgd->beacon_crc = ncrc;
4140 ifmgd->beacon_crc_valid = true;
4142 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
4144 ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
4145 rx_status->device_timestamp,
4148 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) &&
4149 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
4150 elems.wmm_param_len,
4151 elems.mu_edca_param_set))
4152 changed |= BSS_CHANGED_QOS;
4155 * If we haven't had a beacon before, tell the driver about the
4156 * DTIM period (and beacon timing if desired) now.
4158 if (!ifmgd->have_beacon) {
4159 /* a few bogus AP send dtim_period = 0 or no TIM IE */
4160 bss_conf->dtim_period = elems.dtim_period ?: 1;
4162 changed |= BSS_CHANGED_BEACON_INFO;
4163 ifmgd->have_beacon = true;
4165 mutex_lock(&local->iflist_mtx);
4166 ieee80211_recalc_ps(local);
4167 mutex_unlock(&local->iflist_mtx);
4169 ieee80211_recalc_ps_vif(sdata);
4172 if (elems.erp_info) {
4174 erp_value = elems.erp_info[0];
4179 if (!ieee80211_is_s1g_beacon(hdr->frame_control))
4180 changed |= ieee80211_handle_bss_capability(sdata,
4181 le16_to_cpu(mgmt->u.beacon.capab_info),
4182 erp_valid, erp_value);
4184 mutex_lock(&local->sta_mtx);
4185 sta = sta_info_get(sdata, bssid);
4187 changed |= ieee80211_recalc_twt_req(sdata, sta, &elems);
4189 if (ieee80211_config_bw(sdata, sta, elems.ht_cap_elem,
4190 elems.vht_cap_elem, elems.ht_operation,
4191 elems.vht_operation, elems.he_operation,
4192 elems.s1g_oper, bssid, &changed)) {
4193 mutex_unlock(&local->sta_mtx);
4195 "failed to follow AP %pM bandwidth change, disconnect\n",
4197 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4198 WLAN_REASON_DEAUTH_LEAVING,
4200 ieee80211_report_disconnect(sdata, deauth_buf,
4201 sizeof(deauth_buf), true,
4202 WLAN_REASON_DEAUTH_LEAVING);
4206 if (sta && elems.opmode_notif)
4207 ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
4209 mutex_unlock(&local->sta_mtx);
4211 changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt,
4213 elems.country_elem_len,
4214 elems.pwr_constr_elem,
4215 elems.cisco_dtpc_elem);
4217 ieee80211_bss_info_change_notify(sdata, changed);
4220 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
4221 struct sk_buff *skb)
4223 struct ieee80211_rx_status *rx_status;
4224 struct ieee80211_hdr *hdr;
4227 rx_status = (struct ieee80211_rx_status *) skb->cb;
4228 hdr = (struct ieee80211_hdr *) skb->data;
4229 fc = le16_to_cpu(hdr->frame_control);
4232 switch (fc & IEEE80211_FCTL_STYPE) {
4233 case IEEE80211_STYPE_S1G_BEACON:
4234 ieee80211_rx_mgmt_beacon(sdata, hdr, skb->len, rx_status);
4237 sdata_unlock(sdata);
4240 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
4241 struct sk_buff *skb)
4243 struct ieee80211_rx_status *rx_status;
4244 struct ieee80211_mgmt *mgmt;
4246 struct ieee802_11_elems elems;
4249 rx_status = (struct ieee80211_rx_status *) skb->cb;
4250 mgmt = (struct ieee80211_mgmt *) skb->data;
4251 fc = le16_to_cpu(mgmt->frame_control);
4255 switch (fc & IEEE80211_FCTL_STYPE) {
4256 case IEEE80211_STYPE_BEACON:
4257 ieee80211_rx_mgmt_beacon(sdata, (void *)mgmt,
4258 skb->len, rx_status);
4260 case IEEE80211_STYPE_PROBE_RESP:
4261 ieee80211_rx_mgmt_probe_resp(sdata, skb);
4263 case IEEE80211_STYPE_AUTH:
4264 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
4266 case IEEE80211_STYPE_DEAUTH:
4267 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
4269 case IEEE80211_STYPE_DISASSOC:
4270 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
4272 case IEEE80211_STYPE_ASSOC_RESP:
4273 case IEEE80211_STYPE_REASSOC_RESP:
4274 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
4276 case IEEE80211_STYPE_ACTION:
4277 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
4278 ies_len = skb->len -
4279 offsetof(struct ieee80211_mgmt,
4280 u.action.u.chan_switch.variable);
4285 /* CSA IE cannot be overridden, no need for BSSID */
4286 ieee802_11_parse_elems(
4287 mgmt->u.action.u.chan_switch.variable,
4288 ies_len, true, &elems, mgmt->bssid, NULL);
4290 if (elems.parse_error)
4293 ieee80211_sta_process_chanswitch(sdata,
4295 rx_status->device_timestamp,
4297 } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
4298 ies_len = skb->len -
4299 offsetof(struct ieee80211_mgmt,
4300 u.action.u.ext_chan_switch.variable);
4306 * extended CSA IE can't be overridden, no need for
4309 ieee802_11_parse_elems(
4310 mgmt->u.action.u.ext_chan_switch.variable,
4311 ies_len, true, &elems, mgmt->bssid, NULL);
4313 if (elems.parse_error)
4316 /* for the handling code pretend this was also an IE */
4317 elems.ext_chansw_ie =
4318 &mgmt->u.action.u.ext_chan_switch.data;
4320 ieee80211_sta_process_chanswitch(sdata,
4322 rx_status->device_timestamp,
4327 sdata_unlock(sdata);
4330 static void ieee80211_sta_timer(struct timer_list *t)
4332 struct ieee80211_sub_if_data *sdata =
4333 from_timer(sdata, t, u.mgd.timer);
4335 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
4338 static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
4339 u8 *bssid, u8 reason, bool tx)
4341 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4343 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
4346 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
4350 static int ieee80211_auth(struct ieee80211_sub_if_data *sdata)
4352 struct ieee80211_local *local = sdata->local;
4353 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4354 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
4358 u16 prepare_tx_duration = 0;
4360 sdata_assert_lock(sdata);
4362 if (WARN_ON_ONCE(!auth_data))
4367 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
4368 sdata_info(sdata, "authentication with %pM timed out\n",
4369 auth_data->bss->bssid);
4372 * Most likely AP is not in the range so remove the
4373 * bss struct for that AP.
4375 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
4380 if (auth_data->algorithm == WLAN_AUTH_SAE)
4381 prepare_tx_duration =
4382 jiffies_to_msecs(IEEE80211_AUTH_TIMEOUT_SAE);
4384 drv_mgd_prepare_tx(local, sdata, prepare_tx_duration);
4386 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
4387 auth_data->bss->bssid, auth_data->tries,
4388 IEEE80211_AUTH_MAX_TRIES);
4390 auth_data->expected_transaction = 2;
4392 if (auth_data->algorithm == WLAN_AUTH_SAE) {
4393 trans = auth_data->sae_trans;
4394 status = auth_data->sae_status;
4395 auth_data->expected_transaction = trans;
4398 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
4399 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
4400 IEEE80211_TX_INTFL_MLME_CONN_TX;
4402 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
4403 auth_data->data, auth_data->data_len,
4404 auth_data->bss->bssid,
4405 auth_data->bss->bssid, NULL, 0, 0,
4408 if (tx_flags == 0) {
4409 if (auth_data->algorithm == WLAN_AUTH_SAE)
4410 auth_data->timeout = jiffies +
4411 IEEE80211_AUTH_TIMEOUT_SAE;
4413 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
4415 auth_data->timeout =
4416 round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
4419 auth_data->timeout_started = true;
4420 run_again(sdata, auth_data->timeout);
4425 static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
4427 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
4428 struct ieee80211_local *local = sdata->local;
4430 sdata_assert_lock(sdata);
4432 assoc_data->tries++;
4433 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
4434 sdata_info(sdata, "association with %pM timed out\n",
4435 assoc_data->bss->bssid);
4438 * Most likely AP is not in the range so remove the
4439 * bss struct for that AP.
4441 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
4446 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
4447 assoc_data->bss->bssid, assoc_data->tries,
4448 IEEE80211_ASSOC_MAX_TRIES);
4449 ieee80211_send_assoc(sdata);
4451 if (!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
4452 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
4453 assoc_data->timeout_started = true;
4454 run_again(sdata, assoc_data->timeout);
4456 assoc_data->timeout =
4457 round_jiffies_up(jiffies +
4458 IEEE80211_ASSOC_TIMEOUT_LONG);
4459 assoc_data->timeout_started = true;
4460 run_again(sdata, assoc_data->timeout);
4466 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
4467 __le16 fc, bool acked)
4469 struct ieee80211_local *local = sdata->local;
4471 sdata->u.mgd.status_fc = fc;
4472 sdata->u.mgd.status_acked = acked;
4473 sdata->u.mgd.status_received = true;
4475 ieee80211_queue_work(&local->hw, &sdata->work);
4478 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
4480 struct ieee80211_local *local = sdata->local;
4481 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4485 if (ifmgd->status_received) {
4486 __le16 fc = ifmgd->status_fc;
4487 bool status_acked = ifmgd->status_acked;
4489 ifmgd->status_received = false;
4490 if (ifmgd->auth_data && ieee80211_is_auth(fc)) {
4492 if (ifmgd->auth_data->algorithm ==
4494 ifmgd->auth_data->timeout =
4496 IEEE80211_AUTH_TIMEOUT_SAE;
4498 ifmgd->auth_data->timeout =
4500 IEEE80211_AUTH_TIMEOUT_SHORT;
4501 run_again(sdata, ifmgd->auth_data->timeout);
4503 ifmgd->auth_data->timeout = jiffies - 1;
4505 ifmgd->auth_data->timeout_started = true;
4506 } else if (ifmgd->assoc_data &&
4507 (ieee80211_is_assoc_req(fc) ||
4508 ieee80211_is_reassoc_req(fc))) {
4510 ifmgd->assoc_data->timeout =
4511 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
4512 run_again(sdata, ifmgd->assoc_data->timeout);
4514 ifmgd->assoc_data->timeout = jiffies - 1;
4516 ifmgd->assoc_data->timeout_started = true;
4520 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
4521 time_after(jiffies, ifmgd->auth_data->timeout)) {
4522 if (ifmgd->auth_data->done) {
4524 * ok ... we waited for assoc but userspace didn't,
4525 * so let's just kill the auth data
4527 ieee80211_destroy_auth_data(sdata, false);
4528 } else if (ieee80211_auth(sdata)) {
4530 struct ieee80211_event event = {
4532 .u.mlme.data = AUTH_EVENT,
4533 .u.mlme.status = MLME_TIMEOUT,
4536 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
4538 ieee80211_destroy_auth_data(sdata, false);
4540 cfg80211_auth_timeout(sdata->dev, bssid);
4541 drv_event_callback(sdata->local, sdata, &event);
4543 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
4544 run_again(sdata, ifmgd->auth_data->timeout);
4546 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
4547 time_after(jiffies, ifmgd->assoc_data->timeout)) {
4548 if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
4549 ieee80211_do_assoc(sdata)) {
4550 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
4551 struct ieee80211_event event = {
4553 .u.mlme.data = ASSOC_EVENT,
4554 .u.mlme.status = MLME_TIMEOUT,
4557 ieee80211_destroy_assoc_data(sdata, false, false);
4558 cfg80211_assoc_timeout(sdata->dev, bss);
4559 drv_event_callback(sdata->local, sdata, &event);
4561 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
4562 run_again(sdata, ifmgd->assoc_data->timeout);
4564 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
4565 ifmgd->associated) {
4569 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4571 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
4572 max_tries = max_nullfunc_tries;
4574 max_tries = max_probe_tries;
4576 /* ACK received for nullfunc probing frame */
4577 if (!ifmgd->probe_send_count)
4578 ieee80211_reset_ap_probe(sdata);
4579 else if (ifmgd->nullfunc_failed) {
4580 if (ifmgd->probe_send_count < max_tries) {
4582 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
4583 bssid, ifmgd->probe_send_count,
4585 ieee80211_mgd_probe_ap_send(sdata);
4588 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
4590 ieee80211_sta_connection_lost(sdata, bssid,
4591 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
4594 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
4595 run_again(sdata, ifmgd->probe_timeout);
4596 else if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
4598 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
4599 bssid, probe_wait_ms);
4600 ieee80211_sta_connection_lost(sdata, bssid,
4601 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
4602 } else if (ifmgd->probe_send_count < max_tries) {
4604 "No probe response from AP %pM after %dms, try %d/%i\n",
4605 bssid, probe_wait_ms,
4606 ifmgd->probe_send_count, max_tries);
4607 ieee80211_mgd_probe_ap_send(sdata);
4610 * We actually lost the connection ... or did we?
4614 "No probe response from AP %pM after %dms, disconnecting.\n",
4615 bssid, probe_wait_ms);
4617 ieee80211_sta_connection_lost(sdata, bssid,
4618 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
4622 sdata_unlock(sdata);
4625 static void ieee80211_sta_bcn_mon_timer(struct timer_list *t)
4627 struct ieee80211_sub_if_data *sdata =
4628 from_timer(sdata, t, u.mgd.bcn_mon_timer);
4629 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4631 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
4634 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
4637 sdata->u.mgd.connection_loss = false;
4638 ieee80211_queue_work(&sdata->local->hw,
4639 &sdata->u.mgd.beacon_connection_loss_work);
4642 static void ieee80211_sta_conn_mon_timer(struct timer_list *t)
4644 struct ieee80211_sub_if_data *sdata =
4645 from_timer(sdata, t, u.mgd.conn_mon_timer);
4646 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4647 struct ieee80211_local *local = sdata->local;
4648 struct sta_info *sta;
4649 unsigned long timeout;
4651 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
4654 sta = sta_info_get(sdata, ifmgd->bssid);
4658 timeout = sta->status_stats.last_ack;
4659 if (time_before(sta->status_stats.last_ack, sta->rx_stats.last_rx))
4660 timeout = sta->rx_stats.last_rx;
4661 timeout += IEEE80211_CONNECTION_IDLE_TIME;
4663 if (time_is_before_jiffies(timeout)) {
4664 mod_timer(&ifmgd->conn_mon_timer, round_jiffies_up(timeout));
4668 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
4671 static void ieee80211_sta_monitor_work(struct work_struct *work)
4673 struct ieee80211_sub_if_data *sdata =
4674 container_of(work, struct ieee80211_sub_if_data,
4675 u.mgd.monitor_work);
4677 ieee80211_mgd_probe_ap(sdata, false);
4680 static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
4682 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
4683 __ieee80211_stop_poll(sdata);
4685 /* let's probe the connection once */
4686 if (!ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
4687 ieee80211_queue_work(&sdata->local->hw,
4688 &sdata->u.mgd.monitor_work);
4693 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata)
4695 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4696 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4700 if (ifmgd->auth_data || ifmgd->assoc_data) {
4701 const u8 *bssid = ifmgd->auth_data ?
4702 ifmgd->auth_data->bss->bssid :
4703 ifmgd->assoc_data->bss->bssid;
4706 * If we are trying to authenticate / associate while suspending,
4707 * cfg80211 won't know and won't actually abort those attempts,
4708 * thus we need to do that ourselves.
4710 ieee80211_send_deauth_disassoc(sdata, bssid, bssid,
4711 IEEE80211_STYPE_DEAUTH,
4712 WLAN_REASON_DEAUTH_LEAVING,
4714 if (ifmgd->assoc_data)
4715 ieee80211_destroy_assoc_data(sdata, false, true);
4716 if (ifmgd->auth_data)
4717 ieee80211_destroy_auth_data(sdata, false);
4718 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4719 IEEE80211_DEAUTH_FRAME_LEN);
4722 /* This is a bit of a hack - we should find a better and more generic
4723 * solution to this. Normally when suspending, cfg80211 will in fact
4724 * deauthenticate. However, it doesn't (and cannot) stop an ongoing
4725 * auth (not so important) or assoc (this is the problem) process.
4727 * As a consequence, it can happen that we are in the process of both
4728 * associating and suspending, and receive an association response
4729 * after cfg80211 has checked if it needs to disconnect, but before
4730 * we actually set the flag to drop incoming frames. This will then
4731 * cause the workqueue flush to process the association response in
4732 * the suspend, resulting in a successful association just before it
4733 * tries to remove the interface from the driver, which now though
4734 * has a channel context assigned ... this results in issues.
4736 * To work around this (for now) simply deauth here again if we're
4739 if (ifmgd->associated && !sdata->local->wowlan) {
4741 struct cfg80211_deauth_request req = {
4742 .reason_code = WLAN_REASON_DEAUTH_LEAVING,
4746 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4747 ieee80211_mgd_deauth(sdata, &req);
4750 sdata_unlock(sdata);
4753 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
4755 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4758 if (!ifmgd->associated) {
4759 sdata_unlock(sdata);
4763 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
4764 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
4765 mlme_dbg(sdata, "driver requested disconnect after resume\n");
4766 ieee80211_sta_connection_lost(sdata,
4767 ifmgd->associated->bssid,
4768 WLAN_REASON_UNSPECIFIED,
4770 sdata_unlock(sdata);
4773 sdata_unlock(sdata);
4777 /* interface setup */
4778 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
4780 struct ieee80211_if_managed *ifmgd;
4782 ifmgd = &sdata->u.mgd;
4783 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
4784 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
4785 INIT_WORK(&ifmgd->beacon_connection_loss_work,
4786 ieee80211_beacon_connection_loss_work);
4787 INIT_WORK(&ifmgd->csa_connection_drop_work,
4788 ieee80211_csa_connection_drop_work);
4789 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
4790 INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work,
4791 ieee80211_tdls_peer_del_work);
4792 timer_setup(&ifmgd->timer, ieee80211_sta_timer, 0);
4793 timer_setup(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, 0);
4794 timer_setup(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, 0);
4795 timer_setup(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, 0);
4796 INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk,
4797 ieee80211_sta_handle_tspec_ac_params_wk);
4800 ifmgd->powersave = sdata->wdev.ps;
4801 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
4802 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
4803 ifmgd->p2p_noa_index = -1;
4805 if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS)
4806 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
4808 ifmgd->req_smps = IEEE80211_SMPS_OFF;
4810 /* Setup TDLS data */
4811 spin_lock_init(&ifmgd->teardown_lock);
4812 ifmgd->teardown_skb = NULL;
4813 ifmgd->orig_teardown_skb = NULL;
4816 /* scan finished notification */
4817 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
4819 struct ieee80211_sub_if_data *sdata;
4821 /* Restart STA timers */
4823 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
4824 if (ieee80211_sdata_running(sdata))
4825 ieee80211_restart_sta_timer(sdata);
4830 static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
4831 struct cfg80211_bss *cbss)
4833 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4834 const u8 *ht_cap_ie, *vht_cap_ie;
4835 const struct ieee80211_ht_cap *ht_cap;
4836 const struct ieee80211_vht_cap *vht_cap;
4839 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
4842 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
4843 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
4844 ht_cap = (void *)(ht_cap_ie + 2);
4845 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
4847 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
4848 * "Tx Unequal Modulation Supported" fields.
4852 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
4855 vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
4856 if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
4860 vht_cap = (void *)(vht_cap_ie + 2);
4861 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
4862 for (nss = 8; nss > 0; nss--) {
4863 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
4864 IEEE80211_VHT_MCS_NOT_SUPPORTED)
4867 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
4868 chains = max(chains, nss);
4875 ieee80211_verify_sta_he_mcs_support(struct ieee80211_supported_band *sband,
4876 const struct ieee80211_he_operation *he_op)
4878 const struct ieee80211_sta_he_cap *sta_he_cap =
4879 ieee80211_get_he_sta_cap(sband);
4883 if (!sta_he_cap || !he_op)
4886 ap_min_req_set = le16_to_cpu(he_op->he_mcs_nss_set);
4888 /* Need to go over for 80MHz, 160MHz and for 80+80 */
4889 for (i = 0; i < 3; i++) {
4890 const struct ieee80211_he_mcs_nss_supp *sta_mcs_nss_supp =
4891 &sta_he_cap->he_mcs_nss_supp;
4892 u16 sta_mcs_map_rx =
4893 le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i]);
4894 u16 sta_mcs_map_tx =
4895 le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i + 1]);
4897 bool verified = true;
4900 * For each band there is a maximum of 8 spatial streams
4901 * possible. Each of the sta_mcs_map_* is a 16-bit struct built
4902 * of 2 bits per NSS (1-8), with the values defined in enum
4903 * ieee80211_he_mcs_support. Need to make sure STA TX and RX
4904 * capabilities aren't less than the AP's minimum requirements
4905 * for this HE BSS per SS.
4906 * It is enough to find one such band that meets the reqs.
4908 for (nss = 8; nss > 0; nss--) {
4909 u8 sta_rx_val = (sta_mcs_map_rx >> (2 * (nss - 1))) & 3;
4910 u8 sta_tx_val = (sta_mcs_map_tx >> (2 * (nss - 1))) & 3;
4911 u8 ap_val = (ap_min_req_set >> (2 * (nss - 1))) & 3;
4913 if (ap_val == IEEE80211_HE_MCS_NOT_SUPPORTED)
4917 * Make sure the HE AP doesn't require MCSs that aren't
4918 * supported by the client
4920 if (sta_rx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
4921 sta_tx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
4922 (ap_val > sta_rx_val) || (ap_val > sta_tx_val)) {
4932 /* If here, STA doesn't meet AP's HE min requirements */
4936 static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
4937 struct cfg80211_bss *cbss)
4939 struct ieee80211_local *local = sdata->local;
4940 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4941 const struct ieee80211_ht_cap *ht_cap = NULL;
4942 const struct ieee80211_ht_operation *ht_oper = NULL;
4943 const struct ieee80211_vht_operation *vht_oper = NULL;
4944 const struct ieee80211_he_operation *he_oper = NULL;
4945 const struct ieee80211_s1g_oper_ie *s1g_oper = NULL;
4946 struct ieee80211_supported_band *sband;
4947 struct cfg80211_chan_def chandef;
4948 bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
4949 bool is_5ghz = cbss->channel->band == NL80211_BAND_5GHZ;
4950 struct ieee80211_bss *bss = (void *)cbss->priv;
4955 sband = local->hw.wiphy->bands[cbss->channel->band];
4957 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
4958 IEEE80211_STA_DISABLE_80P80MHZ |
4959 IEEE80211_STA_DISABLE_160MHZ);
4961 /* disable HT/VHT/HE if we don't support them */
4962 if (!sband->ht_cap.ht_supported && !is_6ghz) {
4963 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4964 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4965 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
4968 if (!sband->vht_cap.vht_supported && is_5ghz) {
4969 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4970 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
4973 if (!ieee80211_get_he_sta_cap(sband))
4974 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
4978 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && !is_6ghz) {
4979 const u8 *ht_oper_ie, *ht_cap_ie;
4981 ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
4982 if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
4983 ht_oper = (void *)(ht_oper_ie + 2);
4985 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
4986 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap))
4987 ht_cap = (void *)(ht_cap_ie + 2);
4990 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4995 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && !is_6ghz) {
4996 const u8 *vht_oper_ie, *vht_cap;
4998 vht_oper_ie = ieee80211_bss_get_ie(cbss,
4999 WLAN_EID_VHT_OPERATION);
5000 if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
5001 vht_oper = (void *)(vht_oper_ie + 2);
5002 if (vht_oper && !ht_oper) {
5005 "AP advertised VHT without HT, disabling HT/VHT/HE\n");
5006 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5007 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5008 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5011 vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
5012 if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
5013 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5018 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE)) {
5019 const struct cfg80211_bss_ies *ies;
5020 const u8 *he_oper_ie;
5022 ies = rcu_dereference(cbss->ies);
5023 he_oper_ie = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION,
5024 ies->data, ies->len);
5026 he_oper_ie[1] == ieee80211_he_oper_size(&he_oper_ie[3]))
5027 he_oper = (void *)(he_oper_ie + 3);
5031 if (!ieee80211_verify_sta_he_mcs_support(sband, he_oper))
5032 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5035 /* Allow VHT if at least one channel on the sband supports 80 MHz */
5037 for (i = 0; i < sband->n_channels; i++) {
5038 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
5039 IEEE80211_CHAN_NO_80MHZ))
5047 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5049 if (sband->band == NL80211_BAND_S1GHZ) {
5050 const u8 *s1g_oper_ie;
5052 s1g_oper_ie = ieee80211_bss_get_ie(cbss,
5053 WLAN_EID_S1G_OPERATION);
5054 if (s1g_oper_ie && s1g_oper_ie[1] >= sizeof(*s1g_oper))
5055 s1g_oper = (void *)(s1g_oper_ie + 2);
5058 "AP missing S1G operation element?\n");
5061 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
5064 ht_oper, vht_oper, he_oper,
5068 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
5073 if (ifmgd->flags & IEEE80211_STA_DISABLE_HE && is_6ghz) {
5074 sdata_info(sdata, "Rejecting non-HE 6/7 GHz connection");
5078 /* will change later if needed */
5079 sdata->smps_mode = IEEE80211_SMPS_OFF;
5081 mutex_lock(&local->mtx);
5083 * If this fails (possibly due to channel context sharing
5084 * on incompatible channels, e.g. 80+80 and 160 sharing the
5085 * same control channel) try to use a smaller bandwidth.
5087 ret = ieee80211_vif_use_channel(sdata, &chandef,
5088 IEEE80211_CHANCTX_SHARED);
5090 /* don't downgrade for 5 and 10 MHz channels, though. */
5091 if (chandef.width == NL80211_CHAN_WIDTH_5 ||
5092 chandef.width == NL80211_CHAN_WIDTH_10)
5095 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
5096 ifmgd->flags |= ieee80211_chandef_downgrade(&chandef);
5097 ret = ieee80211_vif_use_channel(sdata, &chandef,
5098 IEEE80211_CHANCTX_SHARED);
5101 mutex_unlock(&local->mtx);
5105 static bool ieee80211_get_dtim(const struct cfg80211_bss_ies *ies,
5106 u8 *dtim_count, u8 *dtim_period)
5108 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, ies->data, ies->len);
5109 const u8 *idx_ie = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX, ies->data,
5111 const struct ieee80211_tim_ie *tim = NULL;
5112 const struct ieee80211_bssid_index *idx;
5113 bool valid = tim_ie && tim_ie[1] >= 2;
5116 tim = (void *)(tim_ie + 2);
5119 *dtim_count = valid ? tim->dtim_count : 0;
5122 *dtim_period = valid ? tim->dtim_period : 0;
5124 /* Check if value is overridden by non-transmitted profile */
5125 if (!idx_ie || idx_ie[1] < 3)
5128 idx = (void *)(idx_ie + 2);
5131 *dtim_count = idx->dtim_count;
5134 *dtim_period = idx->dtim_period;
5139 static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
5140 struct cfg80211_bss *cbss, bool assoc,
5143 struct ieee80211_local *local = sdata->local;
5144 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5145 struct ieee80211_bss *bss = (void *)cbss->priv;
5146 struct sta_info *new_sta = NULL;
5147 struct ieee80211_supported_band *sband;
5148 bool have_sta = false;
5151 sband = local->hw.wiphy->bands[cbss->channel->band];
5153 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
5156 /* If a reconfig is happening, bail out */
5157 if (local->in_reconfig)
5162 have_sta = sta_info_get(sdata, cbss->bssid);
5167 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
5173 * Set up the information for the new channel before setting the
5174 * new channel. We can't - completely race-free - change the basic
5175 * rates bitmap and the channel (sband) that it refers to, but if
5176 * we set it up before we at least avoid calling into the driver's
5177 * bss_info_changed() method with invalid information (since we do
5178 * call that from changing the channel - only for IDLE and perhaps
5179 * some others, but ...).
5181 * So to avoid that, just set up all the new information before the
5182 * channel, but tell the driver to apply it only afterwards, since
5183 * it might need the new channel for that.
5186 u32 rates = 0, basic_rates = 0;
5187 bool have_higher_than_11mbit;
5188 int min_rate = INT_MAX, min_rate_index = -1;
5189 const struct cfg80211_bss_ies *ies;
5190 int shift = ieee80211_vif_get_shift(&sdata->vif);
5192 /* TODO: S1G Basic Rate Set is expressed elsewhere */
5193 if (cbss->channel->band == NL80211_BAND_S1GHZ) {
5194 ieee80211_s1g_sta_rate_init(new_sta);
5198 ieee80211_get_rates(sband, bss->supp_rates,
5199 bss->supp_rates_len,
5200 &rates, &basic_rates,
5201 &have_higher_than_11mbit,
5202 &min_rate, &min_rate_index,
5206 * This used to be a workaround for basic rates missing
5207 * in the association response frame. Now that we no
5208 * longer use the basic rates from there, it probably
5209 * doesn't happen any more, but keep the workaround so
5210 * in case some *other* APs are buggy in different ways
5211 * we can connect -- with a warning.
5212 * Allow this workaround only in case the AP provided at least
5215 if (min_rate_index < 0) {
5217 "No legacy rates in association response\n");
5219 sta_info_free(local, new_sta);
5221 } else if (!basic_rates) {
5223 "No basic rates, using min rate instead\n");
5224 basic_rates = BIT(min_rate_index);
5228 new_sta->sta.supp_rates[cbss->channel->band] = rates;
5231 "No rates found, keeping mandatory only\n");
5233 sdata->vif.bss_conf.basic_rates = basic_rates;
5235 /* cf. IEEE 802.11 9.2.12 */
5236 if (cbss->channel->band == NL80211_BAND_2GHZ &&
5237 have_higher_than_11mbit)
5238 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
5240 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
5243 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
5245 /* set timing information */
5246 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
5248 ies = rcu_dereference(cbss->beacon_ies);
5250 sdata->vif.bss_conf.sync_tsf = ies->tsf;
5251 sdata->vif.bss_conf.sync_device_ts =
5252 bss->device_ts_beacon;
5254 ieee80211_get_dtim(ies,
5255 &sdata->vif.bss_conf.sync_dtim_count,
5257 } else if (!ieee80211_hw_check(&sdata->local->hw,
5258 TIMING_BEACON_ONLY)) {
5259 ies = rcu_dereference(cbss->proberesp_ies);
5260 /* must be non-NULL since beacon IEs were NULL */
5261 sdata->vif.bss_conf.sync_tsf = ies->tsf;
5262 sdata->vif.bss_conf.sync_device_ts =
5263 bss->device_ts_presp;
5264 sdata->vif.bss_conf.sync_dtim_count = 0;
5266 sdata->vif.bss_conf.sync_tsf = 0;
5267 sdata->vif.bss_conf.sync_device_ts = 0;
5268 sdata->vif.bss_conf.sync_dtim_count = 0;
5273 if (new_sta || override) {
5274 err = ieee80211_prep_channel(sdata, cbss);
5277 sta_info_free(local, new_sta);
5284 * tell driver about BSSID, basic rates and timing
5285 * this was set up above, before setting the channel
5287 ieee80211_bss_info_change_notify(sdata,
5288 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
5289 BSS_CHANGED_BEACON_INT);
5292 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
5294 err = sta_info_insert(new_sta);
5298 "failed to insert STA entry for the AP (error %d)\n",
5303 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
5305 /* Cancel scan to ensure that nothing interferes with connection */
5306 if (local->scanning)
5307 ieee80211_scan_cancel(local);
5313 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
5314 struct cfg80211_auth_request *req)
5316 struct ieee80211_local *local = sdata->local;
5317 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5318 struct ieee80211_mgd_auth_data *auth_data;
5323 /* prepare auth data structure */
5325 switch (req->auth_type) {
5326 case NL80211_AUTHTYPE_OPEN_SYSTEM:
5327 auth_alg = WLAN_AUTH_OPEN;
5329 case NL80211_AUTHTYPE_SHARED_KEY:
5332 auth_alg = WLAN_AUTH_SHARED_KEY;
5334 case NL80211_AUTHTYPE_FT:
5335 auth_alg = WLAN_AUTH_FT;
5337 case NL80211_AUTHTYPE_NETWORK_EAP:
5338 auth_alg = WLAN_AUTH_LEAP;
5340 case NL80211_AUTHTYPE_SAE:
5341 auth_alg = WLAN_AUTH_SAE;
5343 case NL80211_AUTHTYPE_FILS_SK:
5344 auth_alg = WLAN_AUTH_FILS_SK;
5346 case NL80211_AUTHTYPE_FILS_SK_PFS:
5347 auth_alg = WLAN_AUTH_FILS_SK_PFS;
5349 case NL80211_AUTHTYPE_FILS_PK:
5350 auth_alg = WLAN_AUTH_FILS_PK;
5356 if (ifmgd->assoc_data)
5359 auth_data = kzalloc(sizeof(*auth_data) + req->auth_data_len +
5360 req->ie_len, GFP_KERNEL);
5364 auth_data->bss = req->bss;
5366 if (req->auth_data_len >= 4) {
5367 if (req->auth_type == NL80211_AUTHTYPE_SAE) {
5368 __le16 *pos = (__le16 *) req->auth_data;
5370 auth_data->sae_trans = le16_to_cpu(pos[0]);
5371 auth_data->sae_status = le16_to_cpu(pos[1]);
5373 memcpy(auth_data->data, req->auth_data + 4,
5374 req->auth_data_len - 4);
5375 auth_data->data_len += req->auth_data_len - 4;
5378 /* Check if continuing authentication or trying to authenticate with the
5379 * same BSS that we were in the process of authenticating with and avoid
5380 * removal and re-addition of the STA entry in
5381 * ieee80211_prep_connection().
5383 cont_auth = ifmgd->auth_data && req->bss == ifmgd->auth_data->bss;
5385 if (req->ie && req->ie_len) {
5386 memcpy(&auth_data->data[auth_data->data_len],
5387 req->ie, req->ie_len);
5388 auth_data->data_len += req->ie_len;
5391 if (req->key && req->key_len) {
5392 auth_data->key_len = req->key_len;
5393 auth_data->key_idx = req->key_idx;
5394 memcpy(auth_data->key, req->key, req->key_len);
5397 auth_data->algorithm = auth_alg;
5399 /* try to authenticate/probe */
5401 if (ifmgd->auth_data) {
5402 if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE) {
5403 auth_data->peer_confirmed =
5404 ifmgd->auth_data->peer_confirmed;
5406 ieee80211_destroy_auth_data(sdata, cont_auth);
5409 /* prep auth_data so we don't go into idle on disassoc */
5410 ifmgd->auth_data = auth_data;
5412 /* If this is continuation of an ongoing SAE authentication exchange
5413 * (i.e., request to send SAE Confirm) and the peer has already
5414 * confirmed, mark authentication completed since we are about to send
5417 if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE &&
5418 auth_data->peer_confirmed && auth_data->sae_trans == 2)
5419 ieee80211_mark_sta_auth(sdata, req->bss->bssid);
5421 if (ifmgd->associated) {
5422 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5425 "disconnect from AP %pM for new auth to %pM\n",
5426 ifmgd->associated->bssid, req->bss->bssid);
5427 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5428 WLAN_REASON_UNSPECIFIED,
5431 ieee80211_report_disconnect(sdata, frame_buf,
5432 sizeof(frame_buf), true,
5433 WLAN_REASON_UNSPECIFIED);
5436 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
5438 err = ieee80211_prep_connection(sdata, req->bss, cont_auth, false);
5442 err = ieee80211_auth(sdata);
5444 sta_info_destroy_addr(sdata, req->bss->bssid);
5448 /* hold our own reference */
5449 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
5453 eth_zero_addr(ifmgd->bssid);
5454 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
5455 ifmgd->auth_data = NULL;
5456 mutex_lock(&sdata->local->mtx);
5457 ieee80211_vif_release_channel(sdata);
5458 mutex_unlock(&sdata->local->mtx);
5463 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
5464 struct cfg80211_assoc_request *req)
5466 bool is_6ghz = req->bss->channel->band == NL80211_BAND_6GHZ;
5467 bool is_5ghz = req->bss->channel->band == NL80211_BAND_5GHZ;
5468 struct ieee80211_local *local = sdata->local;
5469 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5470 struct ieee80211_bss *bss = (void *)req->bss->priv;
5471 struct ieee80211_mgd_assoc_data *assoc_data;
5472 const struct cfg80211_bss_ies *beacon_ies;
5473 struct ieee80211_supported_band *sband;
5474 const u8 *ssidie, *ht_ie, *vht_ie;
5476 bool override = false;
5478 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
5483 ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
5484 if (!ssidie || ssidie[1] > sizeof(assoc_data->ssid)) {
5489 memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
5490 assoc_data->ssid_len = ssidie[1];
5493 if (ifmgd->associated) {
5494 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5497 "disconnect from AP %pM for new assoc to %pM\n",
5498 ifmgd->associated->bssid, req->bss->bssid);
5499 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5500 WLAN_REASON_UNSPECIFIED,
5503 ieee80211_report_disconnect(sdata, frame_buf,
5504 sizeof(frame_buf), true,
5505 WLAN_REASON_UNSPECIFIED);
5508 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
5513 if (ifmgd->assoc_data) {
5518 if (ifmgd->auth_data) {
5521 /* keep sta info, bssid if matching */
5522 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
5523 ieee80211_destroy_auth_data(sdata, match);
5526 /* prepare assoc data */
5528 ifmgd->beacon_crc_valid = false;
5530 assoc_data->wmm = bss->wmm_used &&
5531 (local->hw.queues >= IEEE80211_NUM_ACS);
5534 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
5535 * We still associate in non-HT mode (11a/b/g) if any one of these
5536 * ciphers is configured as pairwise.
5537 * We can set this to true for non-11n hardware, that'll be checked
5538 * separately along with the peer capabilities.
5540 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
5541 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
5542 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
5543 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
5544 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5545 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5546 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5547 netdev_info(sdata->dev,
5548 "disabling HT/VHT/HE due to WEP/TKIP use\n");
5552 sband = local->hw.wiphy->bands[req->bss->channel->band];
5554 /* also disable HT/VHT/HE if the AP doesn't use WMM */
5555 if (!bss->wmm_used) {
5556 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5557 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5558 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5559 netdev_info(sdata->dev,
5560 "disabling HT/VHT/HE as WMM/QoS is not supported by the AP\n");
5563 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
5564 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
5565 sizeof(ifmgd->ht_capa_mask));
5567 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
5568 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
5569 sizeof(ifmgd->vht_capa_mask));
5571 memcpy(&ifmgd->s1g_capa, &req->s1g_capa, sizeof(ifmgd->s1g_capa));
5572 memcpy(&ifmgd->s1g_capa_mask, &req->s1g_capa_mask,
5573 sizeof(ifmgd->s1g_capa_mask));
5575 if (req->ie && req->ie_len) {
5576 memcpy(assoc_data->ie, req->ie, req->ie_len);
5577 assoc_data->ie_len = req->ie_len;
5580 if (req->fils_kek) {
5581 /* should already be checked in cfg80211 - so warn */
5582 if (WARN_ON(req->fils_kek_len > FILS_MAX_KEK_LEN)) {
5586 memcpy(assoc_data->fils_kek, req->fils_kek,
5588 assoc_data->fils_kek_len = req->fils_kek_len;
5591 if (req->fils_nonces)
5592 memcpy(assoc_data->fils_nonces, req->fils_nonces,
5593 2 * FILS_NONCE_LEN);
5595 assoc_data->bss = req->bss;
5597 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
5598 if (ifmgd->powersave)
5599 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
5601 sdata->smps_mode = IEEE80211_SMPS_OFF;
5603 sdata->smps_mode = ifmgd->req_smps;
5605 assoc_data->capability = req->bss->capability;
5606 assoc_data->supp_rates = bss->supp_rates;
5607 assoc_data->supp_rates_len = bss->supp_rates_len;
5610 ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
5611 if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
5612 assoc_data->ap_ht_param =
5613 ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
5615 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5616 vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
5617 if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
5618 memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
5619 sizeof(struct ieee80211_vht_cap));
5621 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT |
5622 IEEE80211_STA_DISABLE_HE;
5625 if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) &&
5626 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK),
5627 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"))
5628 sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
5630 if (bss->wmm_used && bss->uapsd_supported &&
5631 (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) {
5632 assoc_data->uapsd = true;
5633 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
5635 assoc_data->uapsd = false;
5636 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
5639 if (req->prev_bssid)
5640 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
5643 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
5644 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
5646 ifmgd->mfp = IEEE80211_MFP_DISABLED;
5647 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
5650 if (req->flags & ASSOC_REQ_USE_RRM)
5651 ifmgd->flags |= IEEE80211_STA_ENABLE_RRM;
5653 ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM;
5655 if (req->crypto.control_port)
5656 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
5658 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
5660 sdata->control_port_protocol = req->crypto.control_port_ethertype;
5661 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
5662 sdata->control_port_over_nl80211 =
5663 req->crypto.control_port_over_nl80211;
5664 sdata->control_port_no_preauth = req->crypto.control_port_no_preauth;
5665 sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto,
5668 /* kick off associate process */
5670 ifmgd->assoc_data = assoc_data;
5671 ifmgd->dtim_period = 0;
5672 ifmgd->have_beacon = false;
5674 /* override HT/VHT configuration only if the AP and we support it */
5675 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
5676 struct ieee80211_sta_ht_cap sta_ht_cap;
5678 if (req->flags & ASSOC_REQ_DISABLE_HT)
5681 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
5682 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
5684 /* check for 40 MHz disable override */
5685 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ) &&
5686 sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
5687 !(sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
5690 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
5691 req->flags & ASSOC_REQ_DISABLE_VHT)
5695 if (req->flags & ASSOC_REQ_DISABLE_HT) {
5696 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5697 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5698 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5701 if (req->flags & ASSOC_REQ_DISABLE_VHT)
5702 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5704 err = ieee80211_prep_connection(sdata, req->bss, true, override);
5709 beacon_ies = rcu_dereference(req->bss->beacon_ies);
5711 if (ieee80211_hw_check(&sdata->local->hw, NEED_DTIM_BEFORE_ASSOC) &&
5714 * Wait up to one beacon interval ...
5715 * should this be more if we miss one?
5717 sdata_info(sdata, "waiting for beacon from %pM\n",
5719 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
5720 assoc_data->timeout_started = true;
5721 assoc_data->need_beacon = true;
5722 } else if (beacon_ies) {
5723 const struct element *elem;
5726 ieee80211_get_dtim(beacon_ies, &dtim_count,
5727 &ifmgd->dtim_period);
5729 ifmgd->have_beacon = true;
5730 assoc_data->timeout = jiffies;
5731 assoc_data->timeout_started = true;
5733 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
5734 sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
5735 sdata->vif.bss_conf.sync_device_ts =
5736 bss->device_ts_beacon;
5737 sdata->vif.bss_conf.sync_dtim_count = dtim_count;
5740 elem = cfg80211_find_ext_elem(WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION,
5741 beacon_ies->data, beacon_ies->len);
5742 if (elem && elem->datalen >= 3)
5743 sdata->vif.bss_conf.profile_periodicity = elem->data[2];
5745 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY,
5746 beacon_ies->data, beacon_ies->len);
5747 if (elem && elem->datalen >= 11 &&
5748 (elem->data[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
5749 sdata->vif.bss_conf.ema_ap = true;
5751 assoc_data->timeout = jiffies;
5752 assoc_data->timeout_started = true;
5756 run_again(sdata, assoc_data->timeout);
5758 if (bss->corrupt_data) {
5759 char *corrupt_type = "data";
5760 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
5761 if (bss->corrupt_data &
5762 IEEE80211_BSS_CORRUPT_PROBE_RESP)
5763 corrupt_type = "beacon and probe response";
5765 corrupt_type = "beacon";
5766 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
5767 corrupt_type = "probe response";
5768 sdata_info(sdata, "associating with AP with corrupt %s\n",
5774 eth_zero_addr(ifmgd->bssid);
5775 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
5776 ifmgd->assoc_data = NULL;
5782 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
5783 struct cfg80211_deauth_request *req)
5785 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5786 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5787 bool tx = !req->local_state_change;
5789 if (ifmgd->auth_data &&
5790 ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) {
5792 "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
5793 req->bssid, req->reason_code,
5794 ieee80211_get_reason_code_string(req->reason_code));
5796 drv_mgd_prepare_tx(sdata->local, sdata, 0);
5797 ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid,
5798 IEEE80211_STYPE_DEAUTH,
5799 req->reason_code, tx,
5801 ieee80211_destroy_auth_data(sdata, false);
5802 ieee80211_report_disconnect(sdata, frame_buf,
5803 sizeof(frame_buf), true,
5809 if (ifmgd->assoc_data &&
5810 ether_addr_equal(ifmgd->assoc_data->bss->bssid, req->bssid)) {
5812 "aborting association with %pM by local choice (Reason: %u=%s)\n",
5813 req->bssid, req->reason_code,
5814 ieee80211_get_reason_code_string(req->reason_code));
5816 drv_mgd_prepare_tx(sdata->local, sdata, 0);
5817 ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid,
5818 IEEE80211_STYPE_DEAUTH,
5819 req->reason_code, tx,
5821 ieee80211_destroy_assoc_data(sdata, false, true);
5822 ieee80211_report_disconnect(sdata, frame_buf,
5823 sizeof(frame_buf), true,
5828 if (ifmgd->associated &&
5829 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
5831 "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
5832 req->bssid, req->reason_code,
5833 ieee80211_get_reason_code_string(req->reason_code));
5835 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5836 req->reason_code, tx, frame_buf);
5837 ieee80211_report_disconnect(sdata, frame_buf,
5838 sizeof(frame_buf), true,
5846 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
5847 struct cfg80211_disassoc_request *req)
5849 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5851 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5854 * cfg80211 should catch this ... but it's racy since
5855 * we can receive a disassoc frame, process it, hand it
5856 * to cfg80211 while that's in a locked section already
5857 * trying to tell us that the user wants to disconnect.
5859 if (ifmgd->associated != req->bss)
5863 "disassociating from %pM by local choice (Reason: %u=%s)\n",
5864 req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code));
5866 memcpy(bssid, req->bss->bssid, ETH_ALEN);
5867 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
5868 req->reason_code, !req->local_state_change,
5871 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
5877 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
5879 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5882 * Make sure some work items will not run after this,
5883 * they will not do anything but might not have been
5884 * cancelled when disconnecting.
5886 cancel_work_sync(&ifmgd->monitor_work);
5887 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
5888 cancel_work_sync(&ifmgd->request_smps_work);
5889 cancel_work_sync(&ifmgd->csa_connection_drop_work);
5890 cancel_work_sync(&ifmgd->chswitch_work);
5891 cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work);
5894 if (ifmgd->assoc_data) {
5895 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
5896 ieee80211_destroy_assoc_data(sdata, false, false);
5897 cfg80211_assoc_timeout(sdata->dev, bss);
5899 if (ifmgd->auth_data)
5900 ieee80211_destroy_auth_data(sdata, false);
5901 spin_lock_bh(&ifmgd->teardown_lock);
5902 if (ifmgd->teardown_skb) {
5903 kfree_skb(ifmgd->teardown_skb);
5904 ifmgd->teardown_skb = NULL;
5905 ifmgd->orig_teardown_skb = NULL;
5907 kfree(ifmgd->assoc_req_ies);
5908 ifmgd->assoc_req_ies = NULL;
5909 ifmgd->assoc_req_ies_len = 0;
5910 spin_unlock_bh(&ifmgd->teardown_lock);
5911 del_timer_sync(&ifmgd->timer);
5912 sdata_unlock(sdata);
5915 void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
5916 enum nl80211_cqm_rssi_threshold_event rssi_event,
5920 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
5922 trace_api_cqm_rssi_notify(sdata, rssi_event, rssi_level);
5924 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, rssi_level, gfp);
5926 EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
5928 void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp)
5930 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
5932 trace_api_cqm_beacon_loss_notify(sdata->local, sdata);
5934 cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp);
5936 EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify);