2 * BSS client mode implementation
3 * Copyright 2003-2008, Jouni Malinen <j@w1.fi>
4 * Copyright 2004, Instant802 Networks, Inc.
5 * Copyright 2005, Devicescape Software, Inc.
6 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
7 * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
8 * Copyright 2013-2014 Intel Mobile Communications GmbH
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 #include <linux/delay.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/pm_qos.h>
23 #include <linux/crc32.h>
24 #include <linux/slab.h>
25 #include <linux/export.h>
26 #include <net/mac80211.h>
27 #include <asm/unaligned.h>
29 #include "ieee80211_i.h"
30 #include "driver-ops.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_MAX_TRIES 3
38 #define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
39 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
40 #define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2)
41 #define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
42 #define IEEE80211_ASSOC_MAX_TRIES 3
44 static int max_nullfunc_tries
= 2;
45 module_param(max_nullfunc_tries
, int, 0644);
46 MODULE_PARM_DESC(max_nullfunc_tries
,
47 "Maximum nullfunc tx tries before disconnecting (reason 4).");
49 static int max_probe_tries
= 5;
50 module_param(max_probe_tries
, int, 0644);
51 MODULE_PARM_DESC(max_probe_tries
,
52 "Maximum probe tries before disconnecting (reason 4).");
55 * Beacon loss timeout is calculated as N frames times the
56 * advertised beacon interval. This may need to be somewhat
57 * higher than what hardware might detect to account for
58 * delays in the host processing frames. But since we also
59 * probe on beacon miss before declaring the connection lost
60 * default to what we want.
62 static int beacon_loss_count
= 7;
63 module_param(beacon_loss_count
, int, 0644);
64 MODULE_PARM_DESC(beacon_loss_count
,
65 "Number of beacon intervals before we decide beacon was lost.");
68 * Time the connection can be idle before we probe
69 * it to see if we can still talk to the AP.
71 #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
73 * Time we wait for a probe response after sending
74 * a probe request because of beacon loss or for
75 * checking the connection still works.
77 static int probe_wait_ms
= 500;
78 module_param(probe_wait_ms
, int, 0644);
79 MODULE_PARM_DESC(probe_wait_ms
,
80 "Maximum time(ms) to wait for probe response"
81 " before disconnecting (reason 4).");
84 * Weight given to the latest Beacon frame when calculating average signal
85 * strength for Beacon frames received in the current BSS. This must be
88 #define IEEE80211_SIGNAL_AVE_WEIGHT 3
91 * How many Beacon frames need to have been used in average signal strength
92 * before starting to indicate signal change events.
94 #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
97 * We can have multiple work items (and connection probing)
98 * scheduling this timer, but we need to take care to only
99 * reschedule it when it should fire _earlier_ than it was
100 * asked for before, or if it's not pending right now. This
101 * function ensures that. Note that it then is required to
102 * run this function for all timeouts after the first one
103 * has happened -- the work that runs from this timer will
106 static void run_again(struct ieee80211_sub_if_data
*sdata
,
107 unsigned long timeout
)
109 sdata_assert_lock(sdata
);
111 if (!timer_pending(&sdata
->u
.mgd
.timer
) ||
112 time_before(timeout
, sdata
->u
.mgd
.timer
.expires
))
113 mod_timer(&sdata
->u
.mgd
.timer
, timeout
);
116 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data
*sdata
)
118 if (sdata
->vif
.driver_flags
& IEEE80211_VIF_BEACON_FILTER
)
121 if (sdata
->local
->hw
.flags
& IEEE80211_HW_CONNECTION_MONITOR
)
124 mod_timer(&sdata
->u
.mgd
.bcn_mon_timer
,
125 round_jiffies_up(jiffies
+ sdata
->u
.mgd
.beacon_timeout
));
128 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data
*sdata
)
130 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
132 if (unlikely(!sdata
->u
.mgd
.associated
))
135 ifmgd
->probe_send_count
= 0;
137 if (sdata
->local
->hw
.flags
& IEEE80211_HW_CONNECTION_MONITOR
)
140 mod_timer(&sdata
->u
.mgd
.conn_mon_timer
,
141 round_jiffies_up(jiffies
+ IEEE80211_CONNECTION_IDLE_TIME
));
144 static int ecw2cw(int ecw
)
146 return (1 << ecw
) - 1;
150 ieee80211_determine_chantype(struct ieee80211_sub_if_data
*sdata
,
151 struct ieee80211_supported_band
*sband
,
152 struct ieee80211_channel
*channel
,
153 const struct ieee80211_ht_cap
*ht_cap
,
154 const struct ieee80211_ht_operation
*ht_oper
,
155 const struct ieee80211_vht_operation
*vht_oper
,
156 struct cfg80211_chan_def
*chandef
, bool tracking
)
158 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
159 struct cfg80211_chan_def vht_chandef
;
160 struct ieee80211_sta_ht_cap sta_ht_cap
;
163 memcpy(&sta_ht_cap
, &sband
->ht_cap
, sizeof(sta_ht_cap
));
164 ieee80211_apply_htcap_overrides(sdata
, &sta_ht_cap
);
166 chandef
->chan
= channel
;
167 chandef
->width
= NL80211_CHAN_WIDTH_20_NOHT
;
168 chandef
->center_freq1
= channel
->center_freq
;
169 chandef
->center_freq2
= 0;
171 if (!ht_cap
|| !ht_oper
|| !sta_ht_cap
.ht_supported
) {
172 ret
= IEEE80211_STA_DISABLE_HT
| IEEE80211_STA_DISABLE_VHT
;
176 chandef
->width
= NL80211_CHAN_WIDTH_20
;
178 if (!(ht_cap
->cap_info
&
179 cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40
))) {
180 ret
= IEEE80211_STA_DISABLE_40MHZ
;
181 vht_chandef
= *chandef
;
185 ht_cfreq
= ieee80211_channel_to_frequency(ht_oper
->primary_chan
,
187 /* check that channel matches the right operating channel */
188 if (!tracking
&& channel
->center_freq
!= ht_cfreq
) {
190 * It's possible that some APs are confused here;
191 * Netgear WNDR3700 sometimes reports 4 higher than
192 * the actual channel in association responses, but
193 * since we look at probe response/beacon data here
197 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
198 channel
->center_freq
, ht_cfreq
,
199 ht_oper
->primary_chan
, channel
->band
);
200 ret
= IEEE80211_STA_DISABLE_HT
| IEEE80211_STA_DISABLE_VHT
;
204 /* check 40 MHz support, if we have it */
205 if (sta_ht_cap
.cap
& IEEE80211_HT_CAP_SUP_WIDTH_20_40
) {
206 switch (ht_oper
->ht_param
& IEEE80211_HT_PARAM_CHA_SEC_OFFSET
) {
207 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE
:
208 chandef
->width
= NL80211_CHAN_WIDTH_40
;
209 chandef
->center_freq1
+= 10;
211 case IEEE80211_HT_PARAM_CHA_SEC_BELOW
:
212 chandef
->width
= NL80211_CHAN_WIDTH_40
;
213 chandef
->center_freq1
-= 10;
217 /* 40 MHz (and 80 MHz) must be supported for VHT */
218 ret
= IEEE80211_STA_DISABLE_VHT
;
219 /* also mark 40 MHz disabled */
220 ret
|= IEEE80211_STA_DISABLE_40MHZ
;
224 if (!vht_oper
|| !sband
->vht_cap
.vht_supported
) {
225 ret
= IEEE80211_STA_DISABLE_VHT
;
229 vht_chandef
.chan
= channel
;
230 vht_chandef
.center_freq1
=
231 ieee80211_channel_to_frequency(vht_oper
->center_freq_seg1_idx
,
233 vht_chandef
.center_freq2
= 0;
235 switch (vht_oper
->chan_width
) {
236 case IEEE80211_VHT_CHANWIDTH_USE_HT
:
237 vht_chandef
.width
= chandef
->width
;
238 vht_chandef
.center_freq1
= chandef
->center_freq1
;
240 case IEEE80211_VHT_CHANWIDTH_80MHZ
:
241 vht_chandef
.width
= NL80211_CHAN_WIDTH_80
;
243 case IEEE80211_VHT_CHANWIDTH_160MHZ
:
244 vht_chandef
.width
= NL80211_CHAN_WIDTH_160
;
246 case IEEE80211_VHT_CHANWIDTH_80P80MHZ
:
247 vht_chandef
.width
= NL80211_CHAN_WIDTH_80P80
;
248 vht_chandef
.center_freq2
=
249 ieee80211_channel_to_frequency(
250 vht_oper
->center_freq_seg2_idx
,
254 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
))
256 "AP VHT operation IE has invalid channel width (%d), disable VHT\n",
257 vht_oper
->chan_width
);
258 ret
= IEEE80211_STA_DISABLE_VHT
;
262 if (!cfg80211_chandef_valid(&vht_chandef
)) {
263 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
))
265 "AP VHT information is invalid, disable VHT\n");
266 ret
= IEEE80211_STA_DISABLE_VHT
;
270 if (cfg80211_chandef_identical(chandef
, &vht_chandef
)) {
275 if (!cfg80211_chandef_compatible(chandef
, &vht_chandef
)) {
276 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
))
278 "AP VHT information doesn't match HT, disable VHT\n");
279 ret
= IEEE80211_STA_DISABLE_VHT
;
283 *chandef
= vht_chandef
;
289 * When tracking the current AP, don't do any further checks if the
290 * new chandef is identical to the one we're currently using for the
291 * connection. This keeps us from playing ping-pong with regulatory,
292 * without it the following can happen (for example):
293 * - connect to an AP with 80 MHz, world regdom allows 80 MHz
294 * - AP advertises regdom US
295 * - CRDA loads regdom US with 80 MHz prohibited (old database)
296 * - the code below detects an unsupported channel, downgrades, and
297 * we disconnect from the AP in the caller
298 * - disconnect causes CRDA to reload world regdomain and the game
300 * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881)
302 * It seems possible that there are still scenarios with CSA or real
303 * bandwidth changes where a this could happen, but those cases are
304 * less common and wouldn't completely prevent using the AP.
307 cfg80211_chandef_identical(chandef
, &sdata
->vif
.bss_conf
.chandef
))
310 /* don't print the message below for VHT mismatch if VHT is disabled */
311 if (ret
& IEEE80211_STA_DISABLE_VHT
)
312 vht_chandef
= *chandef
;
315 * Ignore the DISABLED flag when we're already connected and only
316 * tracking the APs beacon for bandwidth changes - otherwise we
317 * might get disconnected here if we connect to an AP, update our
318 * regulatory information based on the AP's country IE and the
319 * information we have is wrong/outdated and disables the channel
320 * that we're actually using for the connection to the AP.
322 while (!cfg80211_chandef_usable(sdata
->local
->hw
.wiphy
, chandef
,
324 IEEE80211_CHAN_DISABLED
)) {
325 if (WARN_ON(chandef
->width
== NL80211_CHAN_WIDTH_20_NOHT
)) {
326 ret
= IEEE80211_STA_DISABLE_HT
|
327 IEEE80211_STA_DISABLE_VHT
;
331 ret
|= ieee80211_chandef_downgrade(chandef
);
334 if (chandef
->width
!= vht_chandef
.width
&& !tracking
)
336 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
338 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef
));
342 static int ieee80211_config_bw(struct ieee80211_sub_if_data
*sdata
,
343 struct sta_info
*sta
,
344 const struct ieee80211_ht_cap
*ht_cap
,
345 const struct ieee80211_ht_operation
*ht_oper
,
346 const struct ieee80211_vht_operation
*vht_oper
,
347 const u8
*bssid
, u32
*changed
)
349 struct ieee80211_local
*local
= sdata
->local
;
350 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
351 struct ieee80211_supported_band
*sband
;
352 struct ieee80211_channel
*chan
;
353 struct cfg80211_chan_def chandef
;
356 enum ieee80211_sta_rx_bandwidth new_sta_bw
;
359 /* if HT was/is disabled, don't track any bandwidth changes */
360 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
|| !ht_oper
)
363 /* don't check VHT if we associated as non-VHT station */
364 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
)
367 if (WARN_ON_ONCE(!sta
))
371 * if bss configuration changed store the new one -
372 * this may be applicable even if channel is identical
374 ht_opmode
= le16_to_cpu(ht_oper
->operation_mode
);
375 if (sdata
->vif
.bss_conf
.ht_operation_mode
!= ht_opmode
) {
376 *changed
|= BSS_CHANGED_HT
;
377 sdata
->vif
.bss_conf
.ht_operation_mode
= ht_opmode
;
380 chan
= sdata
->vif
.bss_conf
.chandef
.chan
;
381 sband
= local
->hw
.wiphy
->bands
[chan
->band
];
383 /* calculate new channel (type) based on HT/VHT operation IEs */
384 flags
= ieee80211_determine_chantype(sdata
, sband
, chan
,
385 ht_cap
, ht_oper
, vht_oper
,
389 * Downgrade the new channel if we associated with restricted
390 * capabilities. For example, if we associated as a 20 MHz STA
391 * to a 40 MHz AP (due to regulatory, capabilities or config
392 * reasons) then switching to a 40 MHz channel now won't do us
393 * any good -- we couldn't use it with the AP.
395 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_80P80MHZ
&&
396 chandef
.width
== NL80211_CHAN_WIDTH_80P80
)
397 flags
|= ieee80211_chandef_downgrade(&chandef
);
398 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_160MHZ
&&
399 chandef
.width
== NL80211_CHAN_WIDTH_160
)
400 flags
|= ieee80211_chandef_downgrade(&chandef
);
401 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_40MHZ
&&
402 chandef
.width
> NL80211_CHAN_WIDTH_20
)
403 flags
|= ieee80211_chandef_downgrade(&chandef
);
405 if (cfg80211_chandef_identical(&chandef
, &sdata
->vif
.bss_conf
.chandef
))
409 "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n",
410 ifmgd
->bssid
, chandef
.chan
->center_freq
, chandef
.width
,
411 chandef
.center_freq1
, chandef
.center_freq2
);
413 if (flags
!= (ifmgd
->flags
& (IEEE80211_STA_DISABLE_HT
|
414 IEEE80211_STA_DISABLE_VHT
|
415 IEEE80211_STA_DISABLE_40MHZ
|
416 IEEE80211_STA_DISABLE_80P80MHZ
|
417 IEEE80211_STA_DISABLE_160MHZ
)) ||
418 !cfg80211_chandef_valid(&chandef
)) {
420 "AP %pM changed bandwidth in a way we can't support - disconnect\n",
425 switch (chandef
.width
) {
426 case NL80211_CHAN_WIDTH_20_NOHT
:
427 case NL80211_CHAN_WIDTH_20
:
428 new_sta_bw
= IEEE80211_STA_RX_BW_20
;
430 case NL80211_CHAN_WIDTH_40
:
431 new_sta_bw
= IEEE80211_STA_RX_BW_40
;
433 case NL80211_CHAN_WIDTH_80
:
434 new_sta_bw
= IEEE80211_STA_RX_BW_80
;
436 case NL80211_CHAN_WIDTH_80P80
:
437 case NL80211_CHAN_WIDTH_160
:
438 new_sta_bw
= IEEE80211_STA_RX_BW_160
;
444 if (new_sta_bw
> sta
->cur_max_bandwidth
)
445 new_sta_bw
= sta
->cur_max_bandwidth
;
447 if (new_sta_bw
< sta
->sta
.bandwidth
) {
448 sta
->sta
.bandwidth
= new_sta_bw
;
449 rate_control_rate_update(local
, sband
, sta
,
450 IEEE80211_RC_BW_CHANGED
);
453 ret
= ieee80211_vif_change_bandwidth(sdata
, &chandef
, changed
);
456 "AP %pM changed bandwidth to incompatible one - disconnect\n",
461 if (new_sta_bw
> sta
->sta
.bandwidth
) {
462 sta
->sta
.bandwidth
= new_sta_bw
;
463 rate_control_rate_update(local
, sband
, sta
,
464 IEEE80211_RC_BW_CHANGED
);
470 /* frame sending functions */
472 static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data
*sdata
,
473 struct sk_buff
*skb
, u8 ap_ht_param
,
474 struct ieee80211_supported_band
*sband
,
475 struct ieee80211_channel
*channel
,
476 enum ieee80211_smps_mode smps
)
479 u32 flags
= channel
->flags
;
481 struct ieee80211_sta_ht_cap ht_cap
;
483 BUILD_BUG_ON(sizeof(ht_cap
) != sizeof(sband
->ht_cap
));
485 memcpy(&ht_cap
, &sband
->ht_cap
, sizeof(ht_cap
));
486 ieee80211_apply_htcap_overrides(sdata
, &ht_cap
);
488 /* determine capability flags */
491 switch (ap_ht_param
& IEEE80211_HT_PARAM_CHA_SEC_OFFSET
) {
492 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE
:
493 if (flags
& IEEE80211_CHAN_NO_HT40PLUS
) {
494 cap
&= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40
;
495 cap
&= ~IEEE80211_HT_CAP_SGI_40
;
498 case IEEE80211_HT_PARAM_CHA_SEC_BELOW
:
499 if (flags
& IEEE80211_CHAN_NO_HT40MINUS
) {
500 cap
&= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40
;
501 cap
&= ~IEEE80211_HT_CAP_SGI_40
;
507 * If 40 MHz was disabled associate as though we weren't
508 * capable of 40 MHz -- some broken APs will never fall
509 * back to trying to transmit in 20 MHz.
511 if (sdata
->u
.mgd
.flags
& IEEE80211_STA_DISABLE_40MHZ
) {
512 cap
&= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40
;
513 cap
&= ~IEEE80211_HT_CAP_SGI_40
;
516 /* set SM PS mode properly */
517 cap
&= ~IEEE80211_HT_CAP_SM_PS
;
519 case IEEE80211_SMPS_AUTOMATIC
:
520 case IEEE80211_SMPS_NUM_MODES
:
522 case IEEE80211_SMPS_OFF
:
523 cap
|= WLAN_HT_CAP_SM_PS_DISABLED
<<
524 IEEE80211_HT_CAP_SM_PS_SHIFT
;
526 case IEEE80211_SMPS_STATIC
:
527 cap
|= WLAN_HT_CAP_SM_PS_STATIC
<<
528 IEEE80211_HT_CAP_SM_PS_SHIFT
;
530 case IEEE80211_SMPS_DYNAMIC
:
531 cap
|= WLAN_HT_CAP_SM_PS_DYNAMIC
<<
532 IEEE80211_HT_CAP_SM_PS_SHIFT
;
536 /* reserve and fill IE */
537 pos
= skb_put(skb
, sizeof(struct ieee80211_ht_cap
) + 2);
538 ieee80211_ie_build_ht_cap(pos
, &ht_cap
, cap
);
541 static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data
*sdata
,
543 struct ieee80211_supported_band
*sband
,
544 struct ieee80211_vht_cap
*ap_vht_cap
)
548 struct ieee80211_sta_vht_cap vht_cap
;
549 u32 mask
, ap_bf_sts
, our_bf_sts
;
551 BUILD_BUG_ON(sizeof(vht_cap
) != sizeof(sband
->vht_cap
));
553 memcpy(&vht_cap
, &sband
->vht_cap
, sizeof(vht_cap
));
554 ieee80211_apply_vhtcap_overrides(sdata
, &vht_cap
);
556 /* determine capability flags */
559 if (sdata
->u
.mgd
.flags
& IEEE80211_STA_DISABLE_80P80MHZ
) {
560 u32 bw
= cap
& IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK
;
562 cap
&= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK
;
563 if (bw
== IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ
||
564 bw
== IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ
)
565 cap
|= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ
;
568 if (sdata
->u
.mgd
.flags
& IEEE80211_STA_DISABLE_160MHZ
) {
569 cap
&= ~IEEE80211_VHT_CAP_SHORT_GI_160
;
570 cap
&= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK
;
574 * Some APs apparently get confused if our capabilities are better
575 * than theirs, so restrict what we advertise in the assoc request.
577 if (!(ap_vht_cap
->vht_cap_info
&
578 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE
)))
579 cap
&= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE
;
581 mask
= IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK
;
583 ap_bf_sts
= le32_to_cpu(ap_vht_cap
->vht_cap_info
) & mask
;
584 our_bf_sts
= cap
& mask
;
586 if (ap_bf_sts
< our_bf_sts
) {
591 /* reserve and fill IE */
592 pos
= skb_put(skb
, sizeof(struct ieee80211_vht_cap
) + 2);
593 ieee80211_ie_build_vht_cap(pos
, &vht_cap
, cap
);
596 static void ieee80211_send_assoc(struct ieee80211_sub_if_data
*sdata
)
598 struct ieee80211_local
*local
= sdata
->local
;
599 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
600 struct ieee80211_mgd_assoc_data
*assoc_data
= ifmgd
->assoc_data
;
602 struct ieee80211_mgmt
*mgmt
;
604 size_t offset
= 0, noffset
;
605 int i
, count
, rates_len
, supp_rates_len
, shift
;
607 struct ieee80211_supported_band
*sband
;
608 struct ieee80211_chanctx_conf
*chanctx_conf
;
609 struct ieee80211_channel
*chan
;
610 u32 rate_flags
, rates
= 0;
612 sdata_assert_lock(sdata
);
615 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
616 if (WARN_ON(!chanctx_conf
)) {
620 chan
= chanctx_conf
->def
.chan
;
621 rate_flags
= ieee80211_chandef_rate_flags(&chanctx_conf
->def
);
623 sband
= local
->hw
.wiphy
->bands
[chan
->band
];
624 shift
= ieee80211_vif_get_shift(&sdata
->vif
);
626 if (assoc_data
->supp_rates_len
) {
628 * Get all rates supported by the device and the AP as
629 * some APs don't like getting a superset of their rates
630 * in the association request (e.g. D-Link DAP 1353 in
633 rates_len
= ieee80211_parse_bitrates(&chanctx_conf
->def
, sband
,
634 assoc_data
->supp_rates
,
635 assoc_data
->supp_rates_len
,
639 * In case AP not provide any supported rates information
640 * before association, we send information element(s) with
641 * all rates that we support.
644 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
645 if ((rate_flags
& sband
->bitrates
[i
].flags
)
653 skb
= alloc_skb(local
->hw
.extra_tx_headroom
+
654 sizeof(*mgmt
) + /* bit too much but doesn't matter */
655 2 + assoc_data
->ssid_len
+ /* SSID */
656 4 + rates_len
+ /* (extended) rates */
657 4 + /* power capability */
658 2 + 2 * sband
->n_channels
+ /* supported channels */
659 2 + sizeof(struct ieee80211_ht_cap
) + /* HT */
660 2 + sizeof(struct ieee80211_vht_cap
) + /* VHT */
661 assoc_data
->ie_len
+ /* extra IEs */
667 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
669 capab
= WLAN_CAPABILITY_ESS
;
671 if (sband
->band
== IEEE80211_BAND_2GHZ
) {
672 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE
))
673 capab
|= WLAN_CAPABILITY_SHORT_SLOT_TIME
;
674 if (!(local
->hw
.flags
& IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE
))
675 capab
|= WLAN_CAPABILITY_SHORT_PREAMBLE
;
678 if (assoc_data
->capability
& WLAN_CAPABILITY_PRIVACY
)
679 capab
|= WLAN_CAPABILITY_PRIVACY
;
681 if ((assoc_data
->capability
& WLAN_CAPABILITY_SPECTRUM_MGMT
) &&
682 (local
->hw
.flags
& IEEE80211_HW_SPECTRUM_MGMT
))
683 capab
|= WLAN_CAPABILITY_SPECTRUM_MGMT
;
685 if (ifmgd
->flags
& IEEE80211_STA_ENABLE_RRM
)
686 capab
|= WLAN_CAPABILITY_RADIO_MEASURE
;
688 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24);
690 memcpy(mgmt
->da
, assoc_data
->bss
->bssid
, ETH_ALEN
);
691 memcpy(mgmt
->sa
, sdata
->vif
.addr
, ETH_ALEN
);
692 memcpy(mgmt
->bssid
, assoc_data
->bss
->bssid
, ETH_ALEN
);
694 if (!is_zero_ether_addr(assoc_data
->prev_bssid
)) {
696 mgmt
->frame_control
= cpu_to_le16(IEEE80211_FTYPE_MGMT
|
697 IEEE80211_STYPE_REASSOC_REQ
);
698 mgmt
->u
.reassoc_req
.capab_info
= cpu_to_le16(capab
);
699 mgmt
->u
.reassoc_req
.listen_interval
=
700 cpu_to_le16(local
->hw
.conf
.listen_interval
);
701 memcpy(mgmt
->u
.reassoc_req
.current_ap
, assoc_data
->prev_bssid
,
705 mgmt
->frame_control
= cpu_to_le16(IEEE80211_FTYPE_MGMT
|
706 IEEE80211_STYPE_ASSOC_REQ
);
707 mgmt
->u
.assoc_req
.capab_info
= cpu_to_le16(capab
);
708 mgmt
->u
.assoc_req
.listen_interval
=
709 cpu_to_le16(local
->hw
.conf
.listen_interval
);
713 pos
= skb_put(skb
, 2 + assoc_data
->ssid_len
);
714 *pos
++ = WLAN_EID_SSID
;
715 *pos
++ = assoc_data
->ssid_len
;
716 memcpy(pos
, assoc_data
->ssid
, assoc_data
->ssid_len
);
718 /* add all rates which were marked to be used above */
719 supp_rates_len
= rates_len
;
720 if (supp_rates_len
> 8)
723 pos
= skb_put(skb
, supp_rates_len
+ 2);
724 *pos
++ = WLAN_EID_SUPP_RATES
;
725 *pos
++ = supp_rates_len
;
728 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
729 if (BIT(i
) & rates
) {
730 int rate
= DIV_ROUND_UP(sband
->bitrates
[i
].bitrate
,
738 if (rates_len
> count
) {
739 pos
= skb_put(skb
, rates_len
- count
+ 2);
740 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
741 *pos
++ = rates_len
- count
;
743 for (i
++; i
< sband
->n_bitrates
; i
++) {
744 if (BIT(i
) & rates
) {
746 rate
= DIV_ROUND_UP(sband
->bitrates
[i
].bitrate
,
753 if (capab
& WLAN_CAPABILITY_SPECTRUM_MGMT
||
754 capab
& WLAN_CAPABILITY_RADIO_MEASURE
) {
755 pos
= skb_put(skb
, 4);
756 *pos
++ = WLAN_EID_PWR_CAPABILITY
;
758 *pos
++ = 0; /* min tx power */
760 *pos
++ = ieee80211_chandef_max_power(&chanctx_conf
->def
);
763 if (capab
& WLAN_CAPABILITY_SPECTRUM_MGMT
) {
764 /* TODO: get this in reg domain format */
765 pos
= skb_put(skb
, 2 * sband
->n_channels
+ 2);
766 *pos
++ = WLAN_EID_SUPPORTED_CHANNELS
;
767 *pos
++ = 2 * sband
->n_channels
;
768 for (i
= 0; i
< sband
->n_channels
; i
++) {
769 *pos
++ = ieee80211_frequency_to_channel(
770 sband
->channels
[i
].center_freq
);
771 *pos
++ = 1; /* one channel in the subband*/
775 /* if present, add any custom IEs that go before HT */
776 if (assoc_data
->ie_len
) {
777 static const u8 before_ht
[] = {
780 WLAN_EID_EXT_SUPP_RATES
,
781 WLAN_EID_PWR_CAPABILITY
,
782 WLAN_EID_SUPPORTED_CHANNELS
,
785 WLAN_EID_RRM_ENABLED_CAPABILITIES
,
786 WLAN_EID_MOBILITY_DOMAIN
,
787 WLAN_EID_FAST_BSS_TRANSITION
, /* reassoc only */
788 WLAN_EID_RIC_DATA
, /* reassoc only */
789 WLAN_EID_SUPPORTED_REGULATORY_CLASSES
,
791 static const u8 after_ric
[] = {
792 WLAN_EID_SUPPORTED_REGULATORY_CLASSES
,
793 WLAN_EID_HT_CAPABILITY
,
794 WLAN_EID_BSS_COEX_2040
,
795 WLAN_EID_EXT_CAPABILITY
,
796 WLAN_EID_QOS_TRAFFIC_CAPA
,
797 WLAN_EID_TIM_BCAST_REQ
,
798 WLAN_EID_INTERWORKING
,
799 /* 60GHz doesn't happen right now */
800 WLAN_EID_VHT_CAPABILITY
,
801 WLAN_EID_OPMODE_NOTIF
,
804 noffset
= ieee80211_ie_split_ric(assoc_data
->ie
,
807 ARRAY_SIZE(before_ht
),
809 ARRAY_SIZE(after_ric
),
811 pos
= skb_put(skb
, noffset
- offset
);
812 memcpy(pos
, assoc_data
->ie
+ offset
, noffset
- offset
);
816 if (WARN_ON_ONCE((ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
) &&
817 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
)))
818 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
820 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
))
821 ieee80211_add_ht_ie(sdata
, skb
, assoc_data
->ap_ht_param
,
822 sband
, chan
, sdata
->smps_mode
);
824 /* if present, add any custom IEs that go before VHT */
825 if (assoc_data
->ie_len
) {
826 static const u8 before_vht
[] = {
829 WLAN_EID_EXT_SUPP_RATES
,
830 WLAN_EID_PWR_CAPABILITY
,
831 WLAN_EID_SUPPORTED_CHANNELS
,
834 WLAN_EID_RRM_ENABLED_CAPABILITIES
,
835 WLAN_EID_MOBILITY_DOMAIN
,
836 WLAN_EID_SUPPORTED_REGULATORY_CLASSES
,
837 WLAN_EID_HT_CAPABILITY
,
838 WLAN_EID_BSS_COEX_2040
,
839 WLAN_EID_EXT_CAPABILITY
,
840 WLAN_EID_QOS_TRAFFIC_CAPA
,
841 WLAN_EID_TIM_BCAST_REQ
,
842 WLAN_EID_INTERWORKING
,
845 /* RIC already taken above, so no need to handle here anymore */
846 noffset
= ieee80211_ie_split(assoc_data
->ie
, assoc_data
->ie_len
,
847 before_vht
, ARRAY_SIZE(before_vht
),
849 pos
= skb_put(skb
, noffset
- offset
);
850 memcpy(pos
, assoc_data
->ie
+ offset
, noffset
- offset
);
854 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
))
855 ieee80211_add_vht_ie(sdata
, skb
, sband
,
856 &assoc_data
->ap_vht_cap
);
858 /* if present, add any custom non-vendor IEs that go after HT */
859 if (assoc_data
->ie_len
) {
860 noffset
= ieee80211_ie_split_vendor(assoc_data
->ie
,
863 pos
= skb_put(skb
, noffset
- offset
);
864 memcpy(pos
, assoc_data
->ie
+ offset
, noffset
- offset
);
868 if (assoc_data
->wmm
) {
869 if (assoc_data
->uapsd
) {
870 qos_info
= ifmgd
->uapsd_queues
;
871 qos_info
|= (ifmgd
->uapsd_max_sp_len
<<
872 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT
);
877 pos
= ieee80211_add_wmm_info_ie(skb_put(skb
, 9), qos_info
);
880 /* add any remaining custom (i.e. vendor specific here) IEs */
881 if (assoc_data
->ie_len
) {
882 noffset
= assoc_data
->ie_len
;
883 pos
= skb_put(skb
, noffset
- offset
);
884 memcpy(pos
, assoc_data
->ie
+ offset
, noffset
- offset
);
887 drv_mgd_prepare_tx(local
, sdata
);
889 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
;
890 if (local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
)
891 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_CTL_REQ_TX_STATUS
|
892 IEEE80211_TX_INTFL_MLME_CONN_TX
;
893 ieee80211_tx_skb(sdata
, skb
);
896 void ieee80211_send_pspoll(struct ieee80211_local
*local
,
897 struct ieee80211_sub_if_data
*sdata
)
899 struct ieee80211_pspoll
*pspoll
;
902 skb
= ieee80211_pspoll_get(&local
->hw
, &sdata
->vif
);
906 pspoll
= (struct ieee80211_pspoll
*) skb
->data
;
907 pspoll
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
909 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
;
910 ieee80211_tx_skb(sdata
, skb
);
913 void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
914 struct ieee80211_sub_if_data
*sdata
,
918 struct ieee80211_hdr_3addr
*nullfunc
;
919 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
921 skb
= ieee80211_nullfunc_get(&local
->hw
, &sdata
->vif
);
925 nullfunc
= (struct ieee80211_hdr_3addr
*) skb
->data
;
927 nullfunc
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
929 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
|
930 IEEE80211_TX_INTFL_OFFCHAN_TX_OK
;
932 if (local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
)
933 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_CTL_REQ_TX_STATUS
;
935 if (ifmgd
->flags
& IEEE80211_STA_CONNECTION_POLL
)
936 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_CTL_USE_MINRATE
;
938 ieee80211_tx_skb(sdata
, skb
);
941 static void ieee80211_send_4addr_nullfunc(struct ieee80211_local
*local
,
942 struct ieee80211_sub_if_data
*sdata
)
945 struct ieee80211_hdr
*nullfunc
;
948 if (WARN_ON(sdata
->vif
.type
!= NL80211_IFTYPE_STATION
))
951 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ 30);
955 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
957 nullfunc
= (struct ieee80211_hdr
*) skb_put(skb
, 30);
958 memset(nullfunc
, 0, 30);
959 fc
= cpu_to_le16(IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
|
960 IEEE80211_FCTL_FROMDS
| IEEE80211_FCTL_TODS
);
961 nullfunc
->frame_control
= fc
;
962 memcpy(nullfunc
->addr1
, sdata
->u
.mgd
.bssid
, ETH_ALEN
);
963 memcpy(nullfunc
->addr2
, sdata
->vif
.addr
, ETH_ALEN
);
964 memcpy(nullfunc
->addr3
, sdata
->u
.mgd
.bssid
, ETH_ALEN
);
965 memcpy(nullfunc
->addr4
, sdata
->vif
.addr
, ETH_ALEN
);
967 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
;
968 ieee80211_tx_skb(sdata
, skb
);
971 /* spectrum management related things */
972 static void ieee80211_chswitch_work(struct work_struct
*work
)
974 struct ieee80211_sub_if_data
*sdata
=
975 container_of(work
, struct ieee80211_sub_if_data
, u
.mgd
.chswitch_work
);
976 struct ieee80211_local
*local
= sdata
->local
;
977 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
980 if (!ieee80211_sdata_running(sdata
))
984 mutex_lock(&local
->mtx
);
985 mutex_lock(&local
->chanctx_mtx
);
987 if (!ifmgd
->associated
)
990 if (!sdata
->vif
.csa_active
)
994 * using reservation isn't immediate as it may be deferred until later
995 * with multi-vif. once reservation is complete it will re-schedule the
996 * work with no reserved_chanctx so verify chandef to check if it
997 * completed successfully
1000 if (sdata
->reserved_chanctx
) {
1002 * with multi-vif csa driver may call ieee80211_csa_finish()
1003 * many times while waiting for other interfaces to use their
1006 if (sdata
->reserved_ready
)
1009 ret
= ieee80211_vif_use_reserved_context(sdata
);
1012 "failed to use reserved channel context, disconnecting (err=%d)\n",
1014 ieee80211_queue_work(&sdata
->local
->hw
,
1015 &ifmgd
->csa_connection_drop_work
);
1022 if (!cfg80211_chandef_identical(&sdata
->vif
.bss_conf
.chandef
,
1023 &sdata
->csa_chandef
)) {
1025 "failed to finalize channel switch, disconnecting\n");
1026 ieee80211_queue_work(&sdata
->local
->hw
,
1027 &ifmgd
->csa_connection_drop_work
);
1031 /* XXX: shouldn't really modify cfg80211-owned data! */
1032 ifmgd
->associated
->channel
= sdata
->csa_chandef
.chan
;
1034 ifmgd
->csa_waiting_bcn
= true;
1036 ieee80211_sta_reset_beacon_monitor(sdata
);
1037 ieee80211_sta_reset_conn_monitor(sdata
);
1040 mutex_unlock(&local
->chanctx_mtx
);
1041 mutex_unlock(&local
->mtx
);
1042 sdata_unlock(sdata
);
1045 static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data
*sdata
)
1047 struct ieee80211_local
*local
= sdata
->local
;
1048 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
1051 sdata_assert_lock(sdata
);
1053 WARN_ON(!sdata
->vif
.csa_active
);
1055 if (sdata
->csa_block_tx
) {
1056 ieee80211_wake_vif_queues(local
, sdata
,
1057 IEEE80211_QUEUE_STOP_REASON_CSA
);
1058 sdata
->csa_block_tx
= false;
1061 sdata
->vif
.csa_active
= false;
1062 ifmgd
->csa_waiting_bcn
= false;
1064 ret
= drv_post_channel_switch(sdata
);
1067 "driver post channel switch failed, disconnecting\n");
1068 ieee80211_queue_work(&local
->hw
,
1069 &ifmgd
->csa_connection_drop_work
);
1073 cfg80211_ch_switch_notify(sdata
->dev
, &sdata
->reserved_chandef
);
1076 void ieee80211_chswitch_done(struct ieee80211_vif
*vif
, bool success
)
1078 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
1079 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
1081 trace_api_chswitch_done(sdata
, success
);
1084 "driver channel switch failed, disconnecting\n");
1085 ieee80211_queue_work(&sdata
->local
->hw
,
1086 &ifmgd
->csa_connection_drop_work
);
1088 ieee80211_queue_work(&sdata
->local
->hw
, &ifmgd
->chswitch_work
);
1091 EXPORT_SYMBOL(ieee80211_chswitch_done
);
1093 static void ieee80211_chswitch_timer(unsigned long data
)
1095 struct ieee80211_sub_if_data
*sdata
=
1096 (struct ieee80211_sub_if_data
*) data
;
1098 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->u
.mgd
.chswitch_work
);
1102 ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data
*sdata
,
1103 u64 timestamp
, u32 device_timestamp
,
1104 struct ieee802_11_elems
*elems
,
1107 struct ieee80211_local
*local
= sdata
->local
;
1108 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
1109 struct cfg80211_bss
*cbss
= ifmgd
->associated
;
1110 struct ieee80211_chanctx_conf
*conf
;
1111 struct ieee80211_chanctx
*chanctx
;
1112 enum ieee80211_band current_band
;
1113 struct ieee80211_csa_ie csa_ie
;
1114 struct ieee80211_channel_switch ch_switch
;
1117 sdata_assert_lock(sdata
);
1122 if (local
->scanning
)
1125 /* disregard subsequent announcements if we are already processing */
1126 if (sdata
->vif
.csa_active
)
1129 current_band
= cbss
->channel
->band
;
1130 memset(&csa_ie
, 0, sizeof(csa_ie
));
1131 res
= ieee80211_parse_ch_switch_ie(sdata
, elems
, current_band
,
1133 ifmgd
->associated
->bssid
, &csa_ie
);
1135 ieee80211_queue_work(&local
->hw
,
1136 &ifmgd
->csa_connection_drop_work
);
1140 if (!cfg80211_chandef_usable(local
->hw
.wiphy
, &csa_ie
.chandef
,
1141 IEEE80211_CHAN_DISABLED
)) {
1143 "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
1144 ifmgd
->associated
->bssid
,
1145 csa_ie
.chandef
.chan
->center_freq
,
1146 csa_ie
.chandef
.width
, csa_ie
.chandef
.center_freq1
,
1147 csa_ie
.chandef
.center_freq2
);
1148 ieee80211_queue_work(&local
->hw
,
1149 &ifmgd
->csa_connection_drop_work
);
1153 mutex_lock(&local
->mtx
);
1154 mutex_lock(&local
->chanctx_mtx
);
1155 conf
= rcu_dereference_protected(sdata
->vif
.chanctx_conf
,
1156 lockdep_is_held(&local
->chanctx_mtx
));
1159 "no channel context assigned to vif?, disconnecting\n");
1160 ieee80211_queue_work(&local
->hw
,
1161 &ifmgd
->csa_connection_drop_work
);
1162 mutex_unlock(&local
->chanctx_mtx
);
1163 mutex_unlock(&local
->mtx
);
1167 chanctx
= container_of(conf
, struct ieee80211_chanctx
, conf
);
1169 if (local
->use_chanctx
&&
1170 !(local
->hw
.flags
& IEEE80211_HW_CHANCTX_STA_CSA
)) {
1172 "driver doesn't support chan-switch with channel contexts\n");
1173 ieee80211_queue_work(&local
->hw
,
1174 &ifmgd
->csa_connection_drop_work
);
1175 mutex_unlock(&local
->chanctx_mtx
);
1176 mutex_unlock(&local
->mtx
);
1180 ch_switch
.timestamp
= timestamp
;
1181 ch_switch
.device_timestamp
= device_timestamp
;
1182 ch_switch
.block_tx
= csa_ie
.mode
;
1183 ch_switch
.chandef
= csa_ie
.chandef
;
1184 ch_switch
.count
= csa_ie
.count
;
1186 if (drv_pre_channel_switch(sdata
, &ch_switch
)) {
1188 "preparing for channel switch failed, disconnecting\n");
1189 ieee80211_queue_work(&local
->hw
,
1190 &ifmgd
->csa_connection_drop_work
);
1191 mutex_unlock(&local
->chanctx_mtx
);
1192 mutex_unlock(&local
->mtx
);
1196 res
= ieee80211_vif_reserve_chanctx(sdata
, &csa_ie
.chandef
,
1197 chanctx
->mode
, false);
1200 "failed to reserve channel context for channel switch, disconnecting (err=%d)\n",
1202 ieee80211_queue_work(&local
->hw
,
1203 &ifmgd
->csa_connection_drop_work
);
1204 mutex_unlock(&local
->chanctx_mtx
);
1205 mutex_unlock(&local
->mtx
);
1208 mutex_unlock(&local
->chanctx_mtx
);
1210 sdata
->vif
.csa_active
= true;
1211 sdata
->csa_chandef
= csa_ie
.chandef
;
1212 sdata
->csa_block_tx
= csa_ie
.mode
;
1214 if (sdata
->csa_block_tx
)
1215 ieee80211_stop_vif_queues(local
, sdata
,
1216 IEEE80211_QUEUE_STOP_REASON_CSA
);
1217 mutex_unlock(&local
->mtx
);
1219 cfg80211_ch_switch_started_notify(sdata
->dev
, &csa_ie
.chandef
,
1222 if (local
->ops
->channel_switch
) {
1223 /* use driver's channel switch callback */
1224 drv_channel_switch(local
, sdata
, &ch_switch
);
1228 /* channel switch handled in software */
1229 if (csa_ie
.count
<= 1)
1230 ieee80211_queue_work(&local
->hw
, &ifmgd
->chswitch_work
);
1232 mod_timer(&ifmgd
->chswitch_timer
,
1233 TU_TO_EXP_TIME((csa_ie
.count
- 1) *
1234 cbss
->beacon_interval
));
1238 ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data
*sdata
,
1239 struct ieee80211_channel
*channel
,
1240 const u8
*country_ie
, u8 country_ie_len
,
1241 const u8
*pwr_constr_elem
,
1242 int *chan_pwr
, int *pwr_reduction
)
1244 struct ieee80211_country_ie_triplet
*triplet
;
1245 int chan
= ieee80211_frequency_to_channel(channel
->center_freq
);
1246 int i
, chan_increment
;
1247 bool have_chan_pwr
= false;
1250 if (country_ie_len
% 2 || country_ie_len
< IEEE80211_COUNTRY_IE_MIN_LEN
)
1253 triplet
= (void *)(country_ie
+ 3);
1254 country_ie_len
-= 3;
1256 switch (channel
->band
) {
1260 case IEEE80211_BAND_2GHZ
:
1261 case IEEE80211_BAND_60GHZ
:
1264 case IEEE80211_BAND_5GHZ
:
1270 while (country_ie_len
>= 3) {
1271 u8 first_channel
= triplet
->chans
.first_channel
;
1273 if (first_channel
>= IEEE80211_COUNTRY_EXTENSION_ID
)
1276 for (i
= 0; i
< triplet
->chans
.num_channels
; i
++) {
1277 if (first_channel
+ i
* chan_increment
== chan
) {
1278 have_chan_pwr
= true;
1279 *chan_pwr
= triplet
->chans
.max_power
;
1288 country_ie_len
-= 3;
1291 if (have_chan_pwr
&& pwr_constr_elem
)
1292 *pwr_reduction
= *pwr_constr_elem
;
1296 return have_chan_pwr
;
1299 static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data
*sdata
,
1300 struct ieee80211_channel
*channel
,
1301 const u8
*cisco_dtpc_ie
,
1304 /* From practical testing, the first data byte of the DTPC element
1305 * seems to contain the requested dBm level, and the CLI on Cisco
1306 * APs clearly state the range is -127 to 127 dBm, which indicates
1307 * a signed byte, although it seemingly never actually goes negative.
1308 * The other byte seems to always be zero.
1310 *pwr_level
= (__s8
)cisco_dtpc_ie
[4];
1313 static u32
ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data
*sdata
,
1314 struct ieee80211_channel
*channel
,
1315 struct ieee80211_mgmt
*mgmt
,
1316 const u8
*country_ie
, u8 country_ie_len
,
1317 const u8
*pwr_constr_ie
,
1318 const u8
*cisco_dtpc_ie
)
1320 bool has_80211h_pwr
= false, has_cisco_pwr
= false;
1321 int chan_pwr
= 0, pwr_reduction_80211h
= 0;
1322 int pwr_level_cisco
, pwr_level_80211h
;
1324 __le16 capab
= mgmt
->u
.probe_resp
.capab_info
;
1327 (capab
& cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT
) ||
1328 capab
& cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE
))) {
1329 has_80211h_pwr
= ieee80211_find_80211h_pwr_constr(
1330 sdata
, channel
, country_ie
, country_ie_len
,
1331 pwr_constr_ie
, &chan_pwr
, &pwr_reduction_80211h
);
1333 max_t(int, 0, chan_pwr
- pwr_reduction_80211h
);
1336 if (cisco_dtpc_ie
) {
1337 ieee80211_find_cisco_dtpc(
1338 sdata
, channel
, cisco_dtpc_ie
, &pwr_level_cisco
);
1339 has_cisco_pwr
= true;
1342 if (!has_80211h_pwr
&& !has_cisco_pwr
)
1345 /* If we have both 802.11h and Cisco DTPC, apply both limits
1346 * by picking the smallest of the two power levels advertised.
1348 if (has_80211h_pwr
&&
1349 (!has_cisco_pwr
|| pwr_level_80211h
<= pwr_level_cisco
)) {
1351 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1352 pwr_level_80211h
, chan_pwr
, pwr_reduction_80211h
,
1353 sdata
->u
.mgd
.bssid
);
1354 new_ap_level
= pwr_level_80211h
;
1355 } else { /* has_cisco_pwr is always true here. */
1357 "Limiting TX power to %d dBm as advertised by %pM\n",
1358 pwr_level_cisco
, sdata
->u
.mgd
.bssid
);
1359 new_ap_level
= pwr_level_cisco
;
1362 if (sdata
->ap_power_level
== new_ap_level
)
1365 sdata
->ap_power_level
= new_ap_level
;
1366 if (__ieee80211_recalc_txpower(sdata
))
1367 return BSS_CHANGED_TXPOWER
;
1372 static void ieee80211_enable_ps(struct ieee80211_local
*local
,
1373 struct ieee80211_sub_if_data
*sdata
)
1375 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
1378 * If we are scanning right now then the parameters will
1379 * take effect when scan finishes.
1381 if (local
->scanning
)
1384 if (conf
->dynamic_ps_timeout
> 0 &&
1385 !(local
->hw
.flags
& IEEE80211_HW_SUPPORTS_DYNAMIC_PS
)) {
1386 mod_timer(&local
->dynamic_ps_timer
, jiffies
+
1387 msecs_to_jiffies(conf
->dynamic_ps_timeout
));
1389 if (local
->hw
.flags
& IEEE80211_HW_PS_NULLFUNC_STACK
)
1390 ieee80211_send_nullfunc(local
, sdata
, 1);
1392 if ((local
->hw
.flags
& IEEE80211_HW_PS_NULLFUNC_STACK
) &&
1393 (local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
))
1396 conf
->flags
|= IEEE80211_CONF_PS
;
1397 ieee80211_hw_config(local
, IEEE80211_CONF_CHANGE_PS
);
1401 static void ieee80211_change_ps(struct ieee80211_local
*local
)
1403 struct ieee80211_conf
*conf
= &local
->hw
.conf
;
1405 if (local
->ps_sdata
) {
1406 ieee80211_enable_ps(local
, local
->ps_sdata
);
1407 } else if (conf
->flags
& IEEE80211_CONF_PS
) {
1408 conf
->flags
&= ~IEEE80211_CONF_PS
;
1409 ieee80211_hw_config(local
, IEEE80211_CONF_CHANGE_PS
);
1410 del_timer_sync(&local
->dynamic_ps_timer
);
1411 cancel_work_sync(&local
->dynamic_ps_enable_work
);
1415 static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data
*sdata
)
1417 struct ieee80211_if_managed
*mgd
= &sdata
->u
.mgd
;
1418 struct sta_info
*sta
= NULL
;
1419 bool authorized
= false;
1421 if (!mgd
->powersave
)
1427 if (!mgd
->associated
)
1430 if (mgd
->flags
& IEEE80211_STA_CONNECTION_POLL
)
1433 if (!mgd
->have_beacon
)
1437 sta
= sta_info_get(sdata
, mgd
->bssid
);
1439 authorized
= test_sta_flag(sta
, WLAN_STA_AUTHORIZED
);
1445 /* need to hold RTNL or interface lock */
1446 void ieee80211_recalc_ps(struct ieee80211_local
*local
, s32 latency
)
1448 struct ieee80211_sub_if_data
*sdata
, *found
= NULL
;
1452 if (!(local
->hw
.flags
& IEEE80211_HW_SUPPORTS_PS
)) {
1453 local
->ps_sdata
= NULL
;
1457 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1458 if (!ieee80211_sdata_running(sdata
))
1460 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
) {
1461 /* If an AP vif is found, then disable PS
1462 * by setting the count to zero thereby setting
1468 if (sdata
->vif
.type
!= NL80211_IFTYPE_STATION
)
1474 if (count
== 1 && ieee80211_powersave_allowed(found
)) {
1478 latency
= pm_qos_request(PM_QOS_NETWORK_LATENCY
);
1480 beaconint_us
= ieee80211_tu_to_usec(
1481 found
->vif
.bss_conf
.beacon_int
);
1483 timeout
= local
->dynamic_ps_forced_timeout
;
1486 * Go to full PSM if the user configures a very low
1487 * latency requirement.
1488 * The 2000 second value is there for compatibility
1489 * until the PM_QOS_NETWORK_LATENCY is configured
1492 if (latency
> (1900 * USEC_PER_MSEC
) &&
1493 latency
!= (2000 * USEC_PER_SEC
))
1498 local
->hw
.conf
.dynamic_ps_timeout
= timeout
;
1500 if (beaconint_us
> latency
) {
1501 local
->ps_sdata
= NULL
;
1504 u8 dtimper
= found
->u
.mgd
.dtim_period
;
1506 /* If the TIM IE is invalid, pretend the value is 1 */
1509 else if (dtimper
> 1)
1510 maxslp
= min_t(int, dtimper
,
1511 latency
/ beaconint_us
);
1513 local
->hw
.conf
.max_sleep_period
= maxslp
;
1514 local
->hw
.conf
.ps_dtim_period
= dtimper
;
1515 local
->ps_sdata
= found
;
1518 local
->ps_sdata
= NULL
;
1521 ieee80211_change_ps(local
);
1524 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data
*sdata
)
1526 bool ps_allowed
= ieee80211_powersave_allowed(sdata
);
1528 if (sdata
->vif
.bss_conf
.ps
!= ps_allowed
) {
1529 sdata
->vif
.bss_conf
.ps
= ps_allowed
;
1530 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_PS
);
1534 void ieee80211_dynamic_ps_disable_work(struct work_struct
*work
)
1536 struct ieee80211_local
*local
=
1537 container_of(work
, struct ieee80211_local
,
1538 dynamic_ps_disable_work
);
1540 if (local
->hw
.conf
.flags
& IEEE80211_CONF_PS
) {
1541 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_PS
;
1542 ieee80211_hw_config(local
, IEEE80211_CONF_CHANGE_PS
);
1545 ieee80211_wake_queues_by_reason(&local
->hw
,
1546 IEEE80211_MAX_QUEUE_MAP
,
1547 IEEE80211_QUEUE_STOP_REASON_PS
,
1551 void ieee80211_dynamic_ps_enable_work(struct work_struct
*work
)
1553 struct ieee80211_local
*local
=
1554 container_of(work
, struct ieee80211_local
,
1555 dynamic_ps_enable_work
);
1556 struct ieee80211_sub_if_data
*sdata
= local
->ps_sdata
;
1557 struct ieee80211_if_managed
*ifmgd
;
1558 unsigned long flags
;
1561 /* can only happen when PS was just disabled anyway */
1565 ifmgd
= &sdata
->u
.mgd
;
1567 if (local
->hw
.conf
.flags
& IEEE80211_CONF_PS
)
1570 if (local
->hw
.conf
.dynamic_ps_timeout
> 0) {
1571 /* don't enter PS if TX frames are pending */
1572 if (drv_tx_frames_pending(local
)) {
1573 mod_timer(&local
->dynamic_ps_timer
, jiffies
+
1575 local
->hw
.conf
.dynamic_ps_timeout
));
1580 * transmission can be stopped by others which leads to
1581 * dynamic_ps_timer expiry. Postpone the ps timer if it
1582 * is not the actual idle state.
1584 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
1585 for (q
= 0; q
< local
->hw
.queues
; q
++) {
1586 if (local
->queue_stop_reasons
[q
]) {
1587 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
,
1589 mod_timer(&local
->dynamic_ps_timer
, jiffies
+
1591 local
->hw
.conf
.dynamic_ps_timeout
));
1595 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
1598 if ((local
->hw
.flags
& IEEE80211_HW_PS_NULLFUNC_STACK
) &&
1599 !(ifmgd
->flags
& IEEE80211_STA_NULLFUNC_ACKED
)) {
1600 if (drv_tx_frames_pending(local
)) {
1601 mod_timer(&local
->dynamic_ps_timer
, jiffies
+
1603 local
->hw
.conf
.dynamic_ps_timeout
));
1605 ieee80211_send_nullfunc(local
, sdata
, 1);
1606 /* Flush to get the tx status of nullfunc frame */
1607 ieee80211_flush_queues(local
, sdata
, false);
1611 if (!((local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
) &&
1612 (local
->hw
.flags
& IEEE80211_HW_PS_NULLFUNC_STACK
)) ||
1613 (ifmgd
->flags
& IEEE80211_STA_NULLFUNC_ACKED
)) {
1614 ifmgd
->flags
&= ~IEEE80211_STA_NULLFUNC_ACKED
;
1615 local
->hw
.conf
.flags
|= IEEE80211_CONF_PS
;
1616 ieee80211_hw_config(local
, IEEE80211_CONF_CHANGE_PS
);
1620 void ieee80211_dynamic_ps_timer(unsigned long data
)
1622 struct ieee80211_local
*local
= (void *) data
;
1624 if (local
->quiescing
|| local
->suspended
)
1627 ieee80211_queue_work(&local
->hw
, &local
->dynamic_ps_enable_work
);
1630 void ieee80211_dfs_cac_timer_work(struct work_struct
*work
)
1632 struct delayed_work
*delayed_work
=
1633 container_of(work
, struct delayed_work
, work
);
1634 struct ieee80211_sub_if_data
*sdata
=
1635 container_of(delayed_work
, struct ieee80211_sub_if_data
,
1636 dfs_cac_timer_work
);
1637 struct cfg80211_chan_def chandef
= sdata
->vif
.bss_conf
.chandef
;
1639 mutex_lock(&sdata
->local
->mtx
);
1640 if (sdata
->wdev
.cac_started
) {
1641 ieee80211_vif_release_channel(sdata
);
1642 cfg80211_cac_event(sdata
->dev
, &chandef
,
1643 NL80211_RADAR_CAC_FINISHED
,
1646 mutex_unlock(&sdata
->local
->mtx
);
1650 __ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data
*sdata
)
1652 struct ieee80211_local
*local
= sdata
->local
;
1653 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
1657 if (local
->hw
.queues
< IEEE80211_NUM_ACS
)
1660 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
1661 struct ieee80211_sta_tx_tspec
*tx_tspec
= &ifmgd
->tx_tspec
[ac
];
1663 unsigned long now
= jiffies
;
1665 if (tx_tspec
->action
== TX_TSPEC_ACTION_NONE
&&
1666 tx_tspec
->admitted_time
&&
1667 time_after(now
, tx_tspec
->time_slice_start
+ HZ
)) {
1668 tx_tspec
->consumed_tx_time
= 0;
1669 tx_tspec
->time_slice_start
= now
;
1671 if (tx_tspec
->downgraded
)
1673 TX_TSPEC_ACTION_STOP_DOWNGRADE
;
1676 switch (tx_tspec
->action
) {
1677 case TX_TSPEC_ACTION_STOP_DOWNGRADE
:
1678 /* take the original parameters */
1679 if (drv_conf_tx(local
, sdata
, ac
, &sdata
->tx_conf
[ac
]))
1681 "failed to set TX queue parameters for queue %d\n",
1683 tx_tspec
->action
= TX_TSPEC_ACTION_NONE
;
1684 tx_tspec
->downgraded
= false;
1687 case TX_TSPEC_ACTION_DOWNGRADE
:
1688 if (time_after(now
, tx_tspec
->time_slice_start
+ HZ
)) {
1689 tx_tspec
->action
= TX_TSPEC_ACTION_NONE
;
1693 /* downgrade next lower non-ACM AC */
1694 for (non_acm_ac
= ac
+ 1;
1695 non_acm_ac
< IEEE80211_NUM_ACS
;
1697 if (!(sdata
->wmm_acm
& BIT(7 - 2 * non_acm_ac
)))
1699 /* The loop will result in using BK even if it requires
1700 * admission control, such configuration makes no sense
1701 * and we have to transmit somehow - the AC selection
1702 * does the same thing.
1704 if (drv_conf_tx(local
, sdata
, ac
,
1705 &sdata
->tx_conf
[non_acm_ac
]))
1707 "failed to set TX queue parameters for queue %d\n",
1709 tx_tspec
->action
= TX_TSPEC_ACTION_NONE
;
1711 schedule_delayed_work(&ifmgd
->tx_tspec_wk
,
1712 tx_tspec
->time_slice_start
+ HZ
- now
+ 1);
1714 case TX_TSPEC_ACTION_NONE
:
1723 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data
*sdata
)
1725 if (__ieee80211_sta_handle_tspec_ac_params(sdata
))
1726 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_QOS
);
1729 static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct
*work
)
1731 struct ieee80211_sub_if_data
*sdata
;
1733 sdata
= container_of(work
, struct ieee80211_sub_if_data
,
1734 u
.mgd
.tx_tspec_wk
.work
);
1735 ieee80211_sta_handle_tspec_ac_params(sdata
);
1739 static bool ieee80211_sta_wmm_params(struct ieee80211_local
*local
,
1740 struct ieee80211_sub_if_data
*sdata
,
1741 const u8
*wmm_param
, size_t wmm_param_len
)
1743 struct ieee80211_tx_queue_params params
;
1744 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
1748 u8 uapsd_queues
= 0;
1750 if (!local
->ops
->conf_tx
)
1753 if (local
->hw
.queues
< IEEE80211_NUM_ACS
)
1759 if (wmm_param_len
< 8 || wmm_param
[5] /* version */ != 1)
1762 if (ifmgd
->flags
& IEEE80211_STA_UAPSD_ENABLED
)
1763 uapsd_queues
= ifmgd
->uapsd_queues
;
1765 count
= wmm_param
[6] & 0x0f;
1766 if (count
== ifmgd
->wmm_last_param_set
)
1768 ifmgd
->wmm_last_param_set
= count
;
1770 pos
= wmm_param
+ 8;
1771 left
= wmm_param_len
- 8;
1773 memset(¶ms
, 0, sizeof(params
));
1776 for (; left
>= 4; left
-= 4, pos
+= 4) {
1777 int aci
= (pos
[0] >> 5) & 0x03;
1778 int acm
= (pos
[0] >> 4) & 0x01;
1786 sdata
->wmm_acm
|= BIT(1) | BIT(2); /* BK/- */
1787 if (uapsd_queues
& IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
)
1793 sdata
->wmm_acm
|= BIT(4) | BIT(5); /* CL/VI */
1794 if (uapsd_queues
& IEEE80211_WMM_IE_STA_QOSINFO_AC_VI
)
1800 sdata
->wmm_acm
|= BIT(6) | BIT(7); /* VO/NC */
1801 if (uapsd_queues
& IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
)
1808 sdata
->wmm_acm
|= BIT(0) | BIT(3); /* BE/EE */
1809 if (uapsd_queues
& IEEE80211_WMM_IE_STA_QOSINFO_AC_BE
)
1814 params
.aifs
= pos
[0] & 0x0f;
1815 params
.cw_max
= ecw2cw((pos
[1] & 0xf0) >> 4);
1816 params
.cw_min
= ecw2cw(pos
[1] & 0x0f);
1817 params
.txop
= get_unaligned_le16(pos
+ 2);
1819 params
.uapsd
= uapsd
;
1822 "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
1824 params
.aifs
, params
.cw_min
, params
.cw_max
,
1825 params
.txop
, params
.uapsd
,
1826 ifmgd
->tx_tspec
[queue
].downgraded
);
1827 sdata
->tx_conf
[queue
] = params
;
1828 if (!ifmgd
->tx_tspec
[queue
].downgraded
&&
1829 drv_conf_tx(local
, sdata
, queue
, ¶ms
))
1831 "failed to set TX queue parameters for queue %d\n",
1835 /* enable WMM or activate new settings */
1836 sdata
->vif
.bss_conf
.qos
= true;
1840 static void __ieee80211_stop_poll(struct ieee80211_sub_if_data
*sdata
)
1842 lockdep_assert_held(&sdata
->local
->mtx
);
1844 sdata
->u
.mgd
.flags
&= ~IEEE80211_STA_CONNECTION_POLL
;
1845 ieee80211_run_deferred_scan(sdata
->local
);
1848 static void ieee80211_stop_poll(struct ieee80211_sub_if_data
*sdata
)
1850 mutex_lock(&sdata
->local
->mtx
);
1851 __ieee80211_stop_poll(sdata
);
1852 mutex_unlock(&sdata
->local
->mtx
);
1855 static u32
ieee80211_handle_bss_capability(struct ieee80211_sub_if_data
*sdata
,
1856 u16 capab
, bool erp_valid
, u8 erp
)
1858 struct ieee80211_bss_conf
*bss_conf
= &sdata
->vif
.bss_conf
;
1860 bool use_protection
;
1861 bool use_short_preamble
;
1862 bool use_short_slot
;
1865 use_protection
= (erp
& WLAN_ERP_USE_PROTECTION
) != 0;
1866 use_short_preamble
= (erp
& WLAN_ERP_BARKER_PREAMBLE
) == 0;
1868 use_protection
= false;
1869 use_short_preamble
= !!(capab
& WLAN_CAPABILITY_SHORT_PREAMBLE
);
1872 use_short_slot
= !!(capab
& WLAN_CAPABILITY_SHORT_SLOT_TIME
);
1873 if (ieee80211_get_sdata_band(sdata
) == IEEE80211_BAND_5GHZ
)
1874 use_short_slot
= true;
1876 if (use_protection
!= bss_conf
->use_cts_prot
) {
1877 bss_conf
->use_cts_prot
= use_protection
;
1878 changed
|= BSS_CHANGED_ERP_CTS_PROT
;
1881 if (use_short_preamble
!= bss_conf
->use_short_preamble
) {
1882 bss_conf
->use_short_preamble
= use_short_preamble
;
1883 changed
|= BSS_CHANGED_ERP_PREAMBLE
;
1886 if (use_short_slot
!= bss_conf
->use_short_slot
) {
1887 bss_conf
->use_short_slot
= use_short_slot
;
1888 changed
|= BSS_CHANGED_ERP_SLOT
;
1894 static void ieee80211_set_associated(struct ieee80211_sub_if_data
*sdata
,
1895 struct cfg80211_bss
*cbss
,
1896 u32 bss_info_changed
)
1898 struct ieee80211_bss
*bss
= (void *)cbss
->priv
;
1899 struct ieee80211_local
*local
= sdata
->local
;
1900 struct ieee80211_bss_conf
*bss_conf
= &sdata
->vif
.bss_conf
;
1902 bss_info_changed
|= BSS_CHANGED_ASSOC
;
1903 bss_info_changed
|= ieee80211_handle_bss_capability(sdata
,
1904 bss_conf
->assoc_capability
, bss
->has_erp_value
, bss
->erp_value
);
1906 sdata
->u
.mgd
.beacon_timeout
= usecs_to_jiffies(ieee80211_tu_to_usec(
1907 beacon_loss_count
* bss_conf
->beacon_int
));
1909 sdata
->u
.mgd
.associated
= cbss
;
1910 memcpy(sdata
->u
.mgd
.bssid
, cbss
->bssid
, ETH_ALEN
);
1912 sdata
->u
.mgd
.flags
|= IEEE80211_STA_RESET_SIGNAL_AVE
;
1914 if (sdata
->vif
.p2p
) {
1915 const struct cfg80211_bss_ies
*ies
;
1918 ies
= rcu_dereference(cbss
->ies
);
1922 ret
= cfg80211_get_p2p_attr(
1923 ies
->data
, ies
->len
,
1924 IEEE80211_P2P_ATTR_ABSENCE_NOTICE
,
1925 (u8
*) &bss_conf
->p2p_noa_attr
,
1926 sizeof(bss_conf
->p2p_noa_attr
));
1928 sdata
->u
.mgd
.p2p_noa_index
=
1929 bss_conf
->p2p_noa_attr
.index
;
1930 bss_info_changed
|= BSS_CHANGED_P2P_PS
;
1936 /* just to be sure */
1937 ieee80211_stop_poll(sdata
);
1939 ieee80211_led_assoc(local
, 1);
1941 if (sdata
->u
.mgd
.have_beacon
) {
1943 * If the AP is buggy we may get here with no DTIM period
1944 * known, so assume it's 1 which is the only safe assumption
1945 * in that case, although if the TIM IE is broken powersave
1946 * probably just won't work at all.
1948 bss_conf
->dtim_period
= sdata
->u
.mgd
.dtim_period
?: 1;
1949 bss_conf
->beacon_rate
= bss
->beacon_rate
;
1950 bss_info_changed
|= BSS_CHANGED_BEACON_INFO
;
1952 bss_conf
->beacon_rate
= NULL
;
1953 bss_conf
->dtim_period
= 0;
1956 bss_conf
->assoc
= 1;
1958 /* Tell the driver to monitor connection quality (if supported) */
1959 if (sdata
->vif
.driver_flags
& IEEE80211_VIF_SUPPORTS_CQM_RSSI
&&
1960 bss_conf
->cqm_rssi_thold
)
1961 bss_info_changed
|= BSS_CHANGED_CQM
;
1963 /* Enable ARP filtering */
1964 if (bss_conf
->arp_addr_cnt
)
1965 bss_info_changed
|= BSS_CHANGED_ARP_FILTER
;
1967 ieee80211_bss_info_change_notify(sdata
, bss_info_changed
);
1969 mutex_lock(&local
->iflist_mtx
);
1970 ieee80211_recalc_ps(local
, -1);
1971 mutex_unlock(&local
->iflist_mtx
);
1973 ieee80211_recalc_smps(sdata
);
1974 ieee80211_recalc_ps_vif(sdata
);
1976 netif_carrier_on(sdata
->dev
);
1979 static void ieee80211_set_disassoc(struct ieee80211_sub_if_data
*sdata
,
1980 u16 stype
, u16 reason
, bool tx
,
1983 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
1984 struct ieee80211_local
*local
= sdata
->local
;
1987 sdata_assert_lock(sdata
);
1989 if (WARN_ON_ONCE(tx
&& !frame_buf
))
1992 if (WARN_ON(!ifmgd
->associated
))
1995 ieee80211_stop_poll(sdata
);
1997 ifmgd
->associated
= NULL
;
1998 netif_carrier_off(sdata
->dev
);
2001 * if we want to get out of ps before disassoc (why?) we have
2002 * to do it before sending disassoc, as otherwise the null-packet
2005 if (local
->hw
.conf
.flags
& IEEE80211_CONF_PS
) {
2006 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_PS
;
2007 ieee80211_hw_config(local
, IEEE80211_CONF_CHANGE_PS
);
2009 local
->ps_sdata
= NULL
;
2011 /* disable per-vif ps */
2012 ieee80211_recalc_ps_vif(sdata
);
2014 /* make sure ongoing transmission finishes */
2018 * drop any frame before deauth/disassoc, this can be data or
2019 * management frame. Since we are disconnecting, we should not
2020 * insist sending these frames which can take time and delay
2021 * the disconnection and possible the roaming.
2024 ieee80211_flush_queues(local
, sdata
, true);
2026 /* deauthenticate/disassociate now */
2027 if (tx
|| frame_buf
)
2028 ieee80211_send_deauth_disassoc(sdata
, ifmgd
->bssid
, stype
,
2029 reason
, tx
, frame_buf
);
2031 /* flush out frame - make sure the deauth was actually sent */
2033 ieee80211_flush_queues(local
, sdata
, false);
2035 /* clear bssid only after building the needed mgmt frames */
2036 memset(ifmgd
->bssid
, 0, ETH_ALEN
);
2038 /* remove AP and TDLS peers */
2039 sta_info_flush(sdata
);
2041 /* finally reset all BSS / config parameters */
2042 changed
|= ieee80211_reset_erp_info(sdata
);
2044 ieee80211_led_assoc(local
, 0);
2045 changed
|= BSS_CHANGED_ASSOC
;
2046 sdata
->vif
.bss_conf
.assoc
= false;
2048 ifmgd
->p2p_noa_index
= -1;
2049 memset(&sdata
->vif
.bss_conf
.p2p_noa_attr
, 0,
2050 sizeof(sdata
->vif
.bss_conf
.p2p_noa_attr
));
2052 /* on the next assoc, re-program HT/VHT parameters */
2053 memset(&ifmgd
->ht_capa
, 0, sizeof(ifmgd
->ht_capa
));
2054 memset(&ifmgd
->ht_capa_mask
, 0, sizeof(ifmgd
->ht_capa_mask
));
2055 memset(&ifmgd
->vht_capa
, 0, sizeof(ifmgd
->vht_capa
));
2056 memset(&ifmgd
->vht_capa_mask
, 0, sizeof(ifmgd
->vht_capa_mask
));
2058 sdata
->ap_power_level
= IEEE80211_UNSET_POWER_LEVEL
;
2060 del_timer_sync(&local
->dynamic_ps_timer
);
2061 cancel_work_sync(&local
->dynamic_ps_enable_work
);
2063 /* Disable ARP filtering */
2064 if (sdata
->vif
.bss_conf
.arp_addr_cnt
)
2065 changed
|= BSS_CHANGED_ARP_FILTER
;
2067 sdata
->vif
.bss_conf
.qos
= false;
2068 changed
|= BSS_CHANGED_QOS
;
2070 /* The BSSID (not really interesting) and HT changed */
2071 changed
|= BSS_CHANGED_BSSID
| BSS_CHANGED_HT
;
2072 ieee80211_bss_info_change_notify(sdata
, changed
);
2074 /* disassociated - set to defaults now */
2075 ieee80211_set_wmm_default(sdata
, false);
2077 del_timer_sync(&sdata
->u
.mgd
.conn_mon_timer
);
2078 del_timer_sync(&sdata
->u
.mgd
.bcn_mon_timer
);
2079 del_timer_sync(&sdata
->u
.mgd
.timer
);
2080 del_timer_sync(&sdata
->u
.mgd
.chswitch_timer
);
2082 sdata
->vif
.bss_conf
.dtim_period
= 0;
2083 sdata
->vif
.bss_conf
.beacon_rate
= NULL
;
2085 ifmgd
->have_beacon
= false;
2088 mutex_lock(&local
->mtx
);
2089 ieee80211_vif_release_channel(sdata
);
2091 sdata
->vif
.csa_active
= false;
2092 ifmgd
->csa_waiting_bcn
= false;
2093 if (sdata
->csa_block_tx
) {
2094 ieee80211_wake_vif_queues(local
, sdata
,
2095 IEEE80211_QUEUE_STOP_REASON_CSA
);
2096 sdata
->csa_block_tx
= false;
2098 mutex_unlock(&local
->mtx
);
2100 /* existing TX TSPEC sessions no longer exist */
2101 memset(ifmgd
->tx_tspec
, 0, sizeof(ifmgd
->tx_tspec
));
2102 cancel_delayed_work_sync(&ifmgd
->tx_tspec_wk
);
2104 sdata
->encrypt_headroom
= IEEE80211_ENCRYPT_HEADROOM
;
2107 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data
*sdata
,
2108 struct ieee80211_hdr
*hdr
)
2111 * We can postpone the mgd.timer whenever receiving unicast frames
2112 * from AP because we know that the connection is working both ways
2113 * at that time. But multicast frames (and hence also beacons) must
2114 * be ignored here, because we need to trigger the timer during
2115 * data idle periods for sending the periodic probe request to the
2116 * AP we're connected to.
2118 if (is_multicast_ether_addr(hdr
->addr1
))
2121 ieee80211_sta_reset_conn_monitor(sdata
);
2124 static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data
*sdata
)
2126 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2127 struct ieee80211_local
*local
= sdata
->local
;
2129 mutex_lock(&local
->mtx
);
2130 if (!(ifmgd
->flags
& IEEE80211_STA_CONNECTION_POLL
))
2133 __ieee80211_stop_poll(sdata
);
2135 mutex_lock(&local
->iflist_mtx
);
2136 ieee80211_recalc_ps(local
, -1);
2137 mutex_unlock(&local
->iflist_mtx
);
2139 if (sdata
->local
->hw
.flags
& IEEE80211_HW_CONNECTION_MONITOR
)
2143 * We've received a probe response, but are not sure whether
2144 * we have or will be receiving any beacons or data, so let's
2145 * schedule the timers again, just in case.
2147 ieee80211_sta_reset_beacon_monitor(sdata
);
2149 mod_timer(&ifmgd
->conn_mon_timer
,
2150 round_jiffies_up(jiffies
+
2151 IEEE80211_CONNECTION_IDLE_TIME
));
2153 mutex_unlock(&local
->mtx
);
2156 static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data
*sdata
,
2157 struct ieee80211_hdr
*hdr
,
2160 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2161 u16 tid
= *ieee80211_get_qos_ctl(hdr
) & IEEE80211_QOS_CTL_TID_MASK
;
2162 int ac
= ieee80211_ac_from_tid(tid
);
2163 struct ieee80211_sta_tx_tspec
*tx_tspec
= &ifmgd
->tx_tspec
[ac
];
2164 unsigned long now
= jiffies
;
2166 if (likely(!tx_tspec
->admitted_time
))
2169 if (time_after(now
, tx_tspec
->time_slice_start
+ HZ
)) {
2170 tx_tspec
->consumed_tx_time
= 0;
2171 tx_tspec
->time_slice_start
= now
;
2173 if (tx_tspec
->downgraded
) {
2174 tx_tspec
->action
= TX_TSPEC_ACTION_STOP_DOWNGRADE
;
2175 schedule_delayed_work(&ifmgd
->tx_tspec_wk
, 0);
2179 if (tx_tspec
->downgraded
)
2182 tx_tspec
->consumed_tx_time
+= tx_time
;
2184 if (tx_tspec
->consumed_tx_time
>= tx_tspec
->admitted_time
) {
2185 tx_tspec
->downgraded
= true;
2186 tx_tspec
->action
= TX_TSPEC_ACTION_DOWNGRADE
;
2187 schedule_delayed_work(&ifmgd
->tx_tspec_wk
, 0);
2191 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data
*sdata
,
2192 struct ieee80211_hdr
*hdr
, bool ack
, u16 tx_time
)
2194 ieee80211_sta_tx_wmm_ac_notify(sdata
, hdr
, tx_time
);
2196 if (!ieee80211_is_data(hdr
->frame_control
))
2199 if (ieee80211_is_nullfunc(hdr
->frame_control
) &&
2200 sdata
->u
.mgd
.probe_send_count
> 0) {
2202 ieee80211_sta_reset_conn_monitor(sdata
);
2204 sdata
->u
.mgd
.nullfunc_failed
= true;
2205 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
2210 ieee80211_sta_reset_conn_monitor(sdata
);
2213 static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data
*sdata
)
2215 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2217 u8
*dst
= ifmgd
->associated
->bssid
;
2218 u8 unicast_limit
= max(1, max_probe_tries
- 3);
2221 * Try sending broadcast probe requests for the last three
2222 * probe requests after the first ones failed since some
2223 * buggy APs only support broadcast probe requests.
2225 if (ifmgd
->probe_send_count
>= unicast_limit
)
2229 * When the hardware reports an accurate Tx ACK status, it's
2230 * better to send a nullfunc frame instead of a probe request,
2231 * as it will kick us off the AP quickly if we aren't associated
2232 * anymore. The timeout will be reset if the frame is ACKed by
2235 ifmgd
->probe_send_count
++;
2237 if (sdata
->local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
) {
2238 ifmgd
->nullfunc_failed
= false;
2239 ieee80211_send_nullfunc(sdata
->local
, sdata
, 0);
2244 ssid
= ieee80211_bss_get_ie(ifmgd
->associated
, WLAN_EID_SSID
);
2245 if (WARN_ON_ONCE(ssid
== NULL
))
2250 ieee80211_send_probe_req(sdata
, sdata
->vif
.addr
, NULL
,
2251 ssid
+ 2, ssid_len
, NULL
,
2252 0, (u32
) -1, true, 0,
2253 ifmgd
->associated
->channel
, false);
2257 ifmgd
->probe_timeout
= jiffies
+ msecs_to_jiffies(probe_wait_ms
);
2258 run_again(sdata
, ifmgd
->probe_timeout
);
2261 static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data
*sdata
,
2264 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2265 bool already
= false;
2267 if (!ieee80211_sdata_running(sdata
))
2272 if (!ifmgd
->associated
)
2275 mutex_lock(&sdata
->local
->mtx
);
2277 if (sdata
->local
->tmp_channel
|| sdata
->local
->scanning
) {
2278 mutex_unlock(&sdata
->local
->mtx
);
2283 mlme_dbg_ratelimited(sdata
,
2284 "detected beacon loss from AP (missed %d beacons) - probing\n",
2287 ieee80211_cqm_beacon_loss_notify(&sdata
->vif
, GFP_KERNEL
);
2291 * The driver/our work has already reported this event or the
2292 * connection monitoring has kicked in and we have already sent
2293 * a probe request. Or maybe the AP died and the driver keeps
2294 * reporting until we disassociate...
2296 * In either case we have to ignore the current call to this
2297 * function (except for setting the correct probe reason bit)
2298 * because otherwise we would reset the timer every time and
2299 * never check whether we received a probe response!
2301 if (ifmgd
->flags
& IEEE80211_STA_CONNECTION_POLL
)
2304 ifmgd
->flags
|= IEEE80211_STA_CONNECTION_POLL
;
2306 mutex_unlock(&sdata
->local
->mtx
);
2311 mutex_lock(&sdata
->local
->iflist_mtx
);
2312 ieee80211_recalc_ps(sdata
->local
, -1);
2313 mutex_unlock(&sdata
->local
->iflist_mtx
);
2315 ifmgd
->probe_send_count
= 0;
2316 ieee80211_mgd_probe_ap_send(sdata
);
2318 sdata_unlock(sdata
);
2321 struct sk_buff
*ieee80211_ap_probereq_get(struct ieee80211_hw
*hw
,
2322 struct ieee80211_vif
*vif
)
2324 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
2325 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2326 struct cfg80211_bss
*cbss
;
2327 struct sk_buff
*skb
;
2331 if (WARN_ON(sdata
->vif
.type
!= NL80211_IFTYPE_STATION
))
2334 sdata_assert_lock(sdata
);
2336 if (ifmgd
->associated
)
2337 cbss
= ifmgd
->associated
;
2338 else if (ifmgd
->auth_data
)
2339 cbss
= ifmgd
->auth_data
->bss
;
2340 else if (ifmgd
->assoc_data
)
2341 cbss
= ifmgd
->assoc_data
->bss
;
2346 ssid
= ieee80211_bss_get_ie(cbss
, WLAN_EID_SSID
);
2347 if (WARN_ON_ONCE(ssid
== NULL
))
2352 skb
= ieee80211_build_probe_req(sdata
, sdata
->vif
.addr
, cbss
->bssid
,
2353 (u32
) -1, cbss
->channel
,
2360 EXPORT_SYMBOL(ieee80211_ap_probereq_get
);
2362 static void __ieee80211_disconnect(struct ieee80211_sub_if_data
*sdata
)
2364 struct ieee80211_local
*local
= sdata
->local
;
2365 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2366 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
2369 if (!ifmgd
->associated
) {
2370 sdata_unlock(sdata
);
2374 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
,
2375 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY
,
2377 mutex_lock(&local
->mtx
);
2378 sdata
->vif
.csa_active
= false;
2379 ifmgd
->csa_waiting_bcn
= false;
2380 if (sdata
->csa_block_tx
) {
2381 ieee80211_wake_vif_queues(local
, sdata
,
2382 IEEE80211_QUEUE_STOP_REASON_CSA
);
2383 sdata
->csa_block_tx
= false;
2385 mutex_unlock(&local
->mtx
);
2387 cfg80211_tx_mlme_mgmt(sdata
->dev
, frame_buf
,
2388 IEEE80211_DEAUTH_FRAME_LEN
);
2389 sdata_unlock(sdata
);
2392 static void ieee80211_beacon_connection_loss_work(struct work_struct
*work
)
2394 struct ieee80211_sub_if_data
*sdata
=
2395 container_of(work
, struct ieee80211_sub_if_data
,
2396 u
.mgd
.beacon_connection_loss_work
);
2397 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2398 struct sta_info
*sta
;
2400 if (ifmgd
->associated
) {
2402 sta
= sta_info_get(sdata
, ifmgd
->bssid
);
2404 sta
->beacon_loss_count
++;
2408 if (ifmgd
->connection_loss
) {
2409 sdata_info(sdata
, "Connection to AP %pM lost\n",
2411 __ieee80211_disconnect(sdata
);
2413 ieee80211_mgd_probe_ap(sdata
, true);
2417 static void ieee80211_csa_connection_drop_work(struct work_struct
*work
)
2419 struct ieee80211_sub_if_data
*sdata
=
2420 container_of(work
, struct ieee80211_sub_if_data
,
2421 u
.mgd
.csa_connection_drop_work
);
2423 __ieee80211_disconnect(sdata
);
2426 void ieee80211_beacon_loss(struct ieee80211_vif
*vif
)
2428 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
2429 struct ieee80211_hw
*hw
= &sdata
->local
->hw
;
2431 trace_api_beacon_loss(sdata
);
2433 sdata
->u
.mgd
.connection_loss
= false;
2434 ieee80211_queue_work(hw
, &sdata
->u
.mgd
.beacon_connection_loss_work
);
2436 EXPORT_SYMBOL(ieee80211_beacon_loss
);
2438 void ieee80211_connection_loss(struct ieee80211_vif
*vif
)
2440 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
2441 struct ieee80211_hw
*hw
= &sdata
->local
->hw
;
2443 trace_api_connection_loss(sdata
);
2445 sdata
->u
.mgd
.connection_loss
= true;
2446 ieee80211_queue_work(hw
, &sdata
->u
.mgd
.beacon_connection_loss_work
);
2448 EXPORT_SYMBOL(ieee80211_connection_loss
);
2451 static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data
*sdata
,
2454 struct ieee80211_mgd_auth_data
*auth_data
= sdata
->u
.mgd
.auth_data
;
2456 sdata_assert_lock(sdata
);
2460 * we are not authenticated yet, the only timer that could be
2461 * running is the timeout for the authentication response which
2462 * which is not relevant anymore.
2464 del_timer_sync(&sdata
->u
.mgd
.timer
);
2465 sta_info_destroy_addr(sdata
, auth_data
->bss
->bssid
);
2467 memset(sdata
->u
.mgd
.bssid
, 0, ETH_ALEN
);
2468 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BSSID
);
2469 sdata
->u
.mgd
.flags
= 0;
2470 mutex_lock(&sdata
->local
->mtx
);
2471 ieee80211_vif_release_channel(sdata
);
2472 mutex_unlock(&sdata
->local
->mtx
);
2475 cfg80211_put_bss(sdata
->local
->hw
.wiphy
, auth_data
->bss
);
2477 sdata
->u
.mgd
.auth_data
= NULL
;
2480 static void ieee80211_auth_challenge(struct ieee80211_sub_if_data
*sdata
,
2481 struct ieee80211_mgmt
*mgmt
, size_t len
)
2483 struct ieee80211_local
*local
= sdata
->local
;
2484 struct ieee80211_mgd_auth_data
*auth_data
= sdata
->u
.mgd
.auth_data
;
2486 struct ieee802_11_elems elems
;
2489 pos
= mgmt
->u
.auth
.variable
;
2490 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), false, &elems
);
2491 if (!elems
.challenge
)
2493 auth_data
->expected_transaction
= 4;
2494 drv_mgd_prepare_tx(sdata
->local
, sdata
);
2495 if (local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
)
2496 tx_flags
= IEEE80211_TX_CTL_REQ_TX_STATUS
|
2497 IEEE80211_TX_INTFL_MLME_CONN_TX
;
2498 ieee80211_send_auth(sdata
, 3, auth_data
->algorithm
, 0,
2499 elems
.challenge
- 2, elems
.challenge_len
+ 2,
2500 auth_data
->bss
->bssid
, auth_data
->bss
->bssid
,
2501 auth_data
->key
, auth_data
->key_len
,
2502 auth_data
->key_idx
, tx_flags
);
2505 static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data
*sdata
,
2506 struct ieee80211_mgmt
*mgmt
, size_t len
)
2508 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2510 u16 auth_alg
, auth_transaction
, status_code
;
2511 struct sta_info
*sta
;
2513 sdata_assert_lock(sdata
);
2518 if (!ifmgd
->auth_data
|| ifmgd
->auth_data
->done
)
2521 memcpy(bssid
, ifmgd
->auth_data
->bss
->bssid
, ETH_ALEN
);
2523 if (!ether_addr_equal(bssid
, mgmt
->bssid
))
2526 auth_alg
= le16_to_cpu(mgmt
->u
.auth
.auth_alg
);
2527 auth_transaction
= le16_to_cpu(mgmt
->u
.auth
.auth_transaction
);
2528 status_code
= le16_to_cpu(mgmt
->u
.auth
.status_code
);
2530 if (auth_alg
!= ifmgd
->auth_data
->algorithm
||
2531 auth_transaction
!= ifmgd
->auth_data
->expected_transaction
) {
2532 sdata_info(sdata
, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2533 mgmt
->sa
, auth_alg
, ifmgd
->auth_data
->algorithm
,
2535 ifmgd
->auth_data
->expected_transaction
);
2539 if (status_code
!= WLAN_STATUS_SUCCESS
) {
2540 sdata_info(sdata
, "%pM denied authentication (status %d)\n",
2541 mgmt
->sa
, status_code
);
2542 ieee80211_destroy_auth_data(sdata
, false);
2543 cfg80211_rx_mlme_mgmt(sdata
->dev
, (u8
*)mgmt
, len
);
2547 switch (ifmgd
->auth_data
->algorithm
) {
2548 case WLAN_AUTH_OPEN
:
2549 case WLAN_AUTH_LEAP
:
2553 case WLAN_AUTH_SHARED_KEY
:
2554 if (ifmgd
->auth_data
->expected_transaction
!= 4) {
2555 ieee80211_auth_challenge(sdata
, mgmt
, len
);
2556 /* need another frame */
2561 WARN_ONCE(1, "invalid auth alg %d",
2562 ifmgd
->auth_data
->algorithm
);
2566 sdata_info(sdata
, "authenticated\n");
2567 ifmgd
->auth_data
->done
= true;
2568 ifmgd
->auth_data
->timeout
= jiffies
+ IEEE80211_AUTH_WAIT_ASSOC
;
2569 ifmgd
->auth_data
->timeout_started
= true;
2570 run_again(sdata
, ifmgd
->auth_data
->timeout
);
2572 if (ifmgd
->auth_data
->algorithm
== WLAN_AUTH_SAE
&&
2573 ifmgd
->auth_data
->expected_transaction
!= 2) {
2575 * Report auth frame to user space for processing since another
2576 * round of Authentication frames is still needed.
2578 cfg80211_rx_mlme_mgmt(sdata
->dev
, (u8
*)mgmt
, len
);
2582 /* move station state to auth */
2583 mutex_lock(&sdata
->local
->sta_mtx
);
2584 sta
= sta_info_get(sdata
, bssid
);
2586 WARN_ONCE(1, "%s: STA %pM not found", sdata
->name
, bssid
);
2589 if (sta_info_move_state(sta
, IEEE80211_STA_AUTH
)) {
2590 sdata_info(sdata
, "failed moving %pM to auth\n", bssid
);
2593 mutex_unlock(&sdata
->local
->sta_mtx
);
2595 cfg80211_rx_mlme_mgmt(sdata
->dev
, (u8
*)mgmt
, len
);
2598 mutex_unlock(&sdata
->local
->sta_mtx
);
2599 /* ignore frame -- wait for timeout */
2602 #define case_WLAN(type) \
2603 case WLAN_REASON_##type: return #type
2605 static const char *ieee80211_get_reason_code_string(u16 reason_code
)
2607 switch (reason_code
) {
2608 case_WLAN(UNSPECIFIED
);
2609 case_WLAN(PREV_AUTH_NOT_VALID
);
2610 case_WLAN(DEAUTH_LEAVING
);
2611 case_WLAN(DISASSOC_DUE_TO_INACTIVITY
);
2612 case_WLAN(DISASSOC_AP_BUSY
);
2613 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA
);
2614 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA
);
2615 case_WLAN(DISASSOC_STA_HAS_LEFT
);
2616 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH
);
2617 case_WLAN(DISASSOC_BAD_POWER
);
2618 case_WLAN(DISASSOC_BAD_SUPP_CHAN
);
2619 case_WLAN(INVALID_IE
);
2620 case_WLAN(MIC_FAILURE
);
2621 case_WLAN(4WAY_HANDSHAKE_TIMEOUT
);
2622 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT
);
2623 case_WLAN(IE_DIFFERENT
);
2624 case_WLAN(INVALID_GROUP_CIPHER
);
2625 case_WLAN(INVALID_PAIRWISE_CIPHER
);
2626 case_WLAN(INVALID_AKMP
);
2627 case_WLAN(UNSUPP_RSN_VERSION
);
2628 case_WLAN(INVALID_RSN_IE_CAP
);
2629 case_WLAN(IEEE8021X_FAILED
);
2630 case_WLAN(CIPHER_SUITE_REJECTED
);
2631 case_WLAN(DISASSOC_UNSPECIFIED_QOS
);
2632 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH
);
2633 case_WLAN(DISASSOC_LOW_ACK
);
2634 case_WLAN(DISASSOC_QAP_EXCEED_TXOP
);
2635 case_WLAN(QSTA_LEAVE_QBSS
);
2636 case_WLAN(QSTA_NOT_USE
);
2637 case_WLAN(QSTA_REQUIRE_SETUP
);
2638 case_WLAN(QSTA_TIMEOUT
);
2639 case_WLAN(QSTA_CIPHER_NOT_SUPP
);
2640 case_WLAN(MESH_PEER_CANCELED
);
2641 case_WLAN(MESH_MAX_PEERS
);
2642 case_WLAN(MESH_CONFIG
);
2643 case_WLAN(MESH_CLOSE
);
2644 case_WLAN(MESH_MAX_RETRIES
);
2645 case_WLAN(MESH_CONFIRM_TIMEOUT
);
2646 case_WLAN(MESH_INVALID_GTK
);
2647 case_WLAN(MESH_INCONSISTENT_PARAM
);
2648 case_WLAN(MESH_INVALID_SECURITY
);
2649 case_WLAN(MESH_PATH_ERROR
);
2650 case_WLAN(MESH_PATH_NOFORWARD
);
2651 case_WLAN(MESH_PATH_DEST_UNREACHABLE
);
2652 case_WLAN(MAC_EXISTS_IN_MBSS
);
2653 case_WLAN(MESH_CHAN_REGULATORY
);
2654 case_WLAN(MESH_CHAN
);
2655 default: return "<unknown>";
2659 static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data
*sdata
,
2660 struct ieee80211_mgmt
*mgmt
, size_t len
)
2662 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2663 const u8
*bssid
= NULL
;
2666 sdata_assert_lock(sdata
);
2671 if (!ifmgd
->associated
||
2672 !ether_addr_equal(mgmt
->bssid
, ifmgd
->associated
->bssid
))
2675 bssid
= ifmgd
->associated
->bssid
;
2677 reason_code
= le16_to_cpu(mgmt
->u
.deauth
.reason_code
);
2679 sdata_info(sdata
, "deauthenticated from %pM (Reason: %u=%s)\n",
2680 bssid
, reason_code
, ieee80211_get_reason_code_string(reason_code
));
2682 ieee80211_set_disassoc(sdata
, 0, 0, false, NULL
);
2684 cfg80211_rx_mlme_mgmt(sdata
->dev
, (u8
*)mgmt
, len
);
2688 static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data
*sdata
,
2689 struct ieee80211_mgmt
*mgmt
, size_t len
)
2691 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2694 sdata_assert_lock(sdata
);
2699 if (!ifmgd
->associated
||
2700 !ether_addr_equal(mgmt
->bssid
, ifmgd
->associated
->bssid
))
2703 reason_code
= le16_to_cpu(mgmt
->u
.disassoc
.reason_code
);
2705 sdata_info(sdata
, "disassociated from %pM (Reason: %u)\n",
2706 mgmt
->sa
, reason_code
);
2708 ieee80211_set_disassoc(sdata
, 0, 0, false, NULL
);
2710 cfg80211_rx_mlme_mgmt(sdata
->dev
, (u8
*)mgmt
, len
);
2713 static void ieee80211_get_rates(struct ieee80211_supported_band
*sband
,
2714 u8
*supp_rates
, unsigned int supp_rates_len
,
2715 u32
*rates
, u32
*basic_rates
,
2716 bool *have_higher_than_11mbit
,
2717 int *min_rate
, int *min_rate_index
,
2718 int shift
, u32 rate_flags
)
2722 for (i
= 0; i
< supp_rates_len
; i
++) {
2723 int rate
= supp_rates
[i
] & 0x7f;
2724 bool is_basic
= !!(supp_rates
[i
] & 0x80);
2726 if ((rate
* 5 * (1 << shift
)) > 110)
2727 *have_higher_than_11mbit
= true;
2730 * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009
2731 * 7.3.2.2 as a magic value instead of a rate. Hence, skip it.
2733 * Note: Even through the membership selector and the basic
2734 * rate flag share the same bit, they are not exactly
2737 if (!!(supp_rates
[i
] & 0x80) &&
2738 (supp_rates
[i
] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY
)
2741 for (j
= 0; j
< sband
->n_bitrates
; j
++) {
2742 struct ieee80211_rate
*br
;
2745 br
= &sband
->bitrates
[j
];
2746 if ((rate_flags
& br
->flags
) != rate_flags
)
2749 brate
= DIV_ROUND_UP(br
->bitrate
, (1 << shift
) * 5);
2750 if (brate
== rate
) {
2753 *basic_rates
|= BIT(j
);
2754 if ((rate
* 5) < *min_rate
) {
2755 *min_rate
= rate
* 5;
2756 *min_rate_index
= j
;
2764 static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data
*sdata
,
2767 struct ieee80211_mgd_assoc_data
*assoc_data
= sdata
->u
.mgd
.assoc_data
;
2769 sdata_assert_lock(sdata
);
2773 * we are not associated yet, the only timer that could be
2774 * running is the timeout for the association response which
2775 * which is not relevant anymore.
2777 del_timer_sync(&sdata
->u
.mgd
.timer
);
2778 sta_info_destroy_addr(sdata
, assoc_data
->bss
->bssid
);
2780 memset(sdata
->u
.mgd
.bssid
, 0, ETH_ALEN
);
2781 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BSSID
);
2782 sdata
->u
.mgd
.flags
= 0;
2783 mutex_lock(&sdata
->local
->mtx
);
2784 ieee80211_vif_release_channel(sdata
);
2785 mutex_unlock(&sdata
->local
->mtx
);
2789 sdata
->u
.mgd
.assoc_data
= NULL
;
2792 static bool ieee80211_assoc_success(struct ieee80211_sub_if_data
*sdata
,
2793 struct cfg80211_bss
*cbss
,
2794 struct ieee80211_mgmt
*mgmt
, size_t len
)
2796 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2797 struct ieee80211_local
*local
= sdata
->local
;
2798 struct ieee80211_supported_band
*sband
;
2799 struct sta_info
*sta
;
2801 u16 capab_info
, aid
;
2802 struct ieee802_11_elems elems
;
2803 struct ieee80211_bss_conf
*bss_conf
= &sdata
->vif
.bss_conf
;
2804 const struct cfg80211_bss_ies
*bss_ies
= NULL
;
2805 struct ieee80211_mgd_assoc_data
*assoc_data
= ifmgd
->assoc_data
;
2810 /* AssocResp and ReassocResp have identical structure */
2812 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
2813 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
2815 if ((aid
& (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
2816 sdata_info(sdata
, "invalid AID value 0x%x; bits 15:14 not set\n",
2818 aid
&= ~(BIT(15) | BIT(14));
2820 ifmgd
->broken_ap
= false;
2822 if (aid
== 0 || aid
> IEEE80211_MAX_AID
) {
2823 sdata_info(sdata
, "invalid AID value %d (out of range), turn off PS\n",
2826 ifmgd
->broken_ap
= true;
2829 pos
= mgmt
->u
.assoc_resp
.variable
;
2830 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), false, &elems
);
2832 if (!elems
.supp_rates
) {
2833 sdata_info(sdata
, "no SuppRates element in AssocResp\n");
2838 ifmgd
->tdls_chan_switch_prohibited
=
2839 elems
.ext_capab
&& elems
.ext_capab_len
>= 5 &&
2840 (elems
.ext_capab
[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED
);
2843 * Some APs are erroneously not including some information in their
2844 * (re)association response frames. Try to recover by using the data
2845 * from the beacon or probe response. This seems to afflict mobile
2846 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
2847 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
2849 if ((assoc_data
->wmm
&& !elems
.wmm_param
) ||
2850 (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
) &&
2851 (!elems
.ht_cap_elem
|| !elems
.ht_operation
)) ||
2852 (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
) &&
2853 (!elems
.vht_cap_elem
|| !elems
.vht_operation
))) {
2854 const struct cfg80211_bss_ies
*ies
;
2855 struct ieee802_11_elems bss_elems
;
2858 ies
= rcu_dereference(cbss
->ies
);
2860 bss_ies
= kmemdup(ies
, sizeof(*ies
) + ies
->len
,
2866 ieee802_11_parse_elems(bss_ies
->data
, bss_ies
->len
,
2868 if (assoc_data
->wmm
&&
2869 !elems
.wmm_param
&& bss_elems
.wmm_param
) {
2870 elems
.wmm_param
= bss_elems
.wmm_param
;
2872 "AP bug: WMM param missing from AssocResp\n");
2876 * Also check if we requested HT/VHT, otherwise the AP doesn't
2877 * have to include the IEs in the (re)association response.
2879 if (!elems
.ht_cap_elem
&& bss_elems
.ht_cap_elem
&&
2880 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
)) {
2881 elems
.ht_cap_elem
= bss_elems
.ht_cap_elem
;
2883 "AP bug: HT capability missing from AssocResp\n");
2885 if (!elems
.ht_operation
&& bss_elems
.ht_operation
&&
2886 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
)) {
2887 elems
.ht_operation
= bss_elems
.ht_operation
;
2889 "AP bug: HT operation missing from AssocResp\n");
2891 if (!elems
.vht_cap_elem
&& bss_elems
.vht_cap_elem
&&
2892 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
)) {
2893 elems
.vht_cap_elem
= bss_elems
.vht_cap_elem
;
2895 "AP bug: VHT capa missing from AssocResp\n");
2897 if (!elems
.vht_operation
&& bss_elems
.vht_operation
&&
2898 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
)) {
2899 elems
.vht_operation
= bss_elems
.vht_operation
;
2901 "AP bug: VHT operation missing from AssocResp\n");
2906 * We previously checked these in the beacon/probe response, so
2907 * they should be present here. This is just a safety net.
2909 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
) &&
2910 (!elems
.wmm_param
|| !elems
.ht_cap_elem
|| !elems
.ht_operation
)) {
2912 "HT AP is missing WMM params or HT capability/operation\n");
2917 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
) &&
2918 (!elems
.vht_cap_elem
|| !elems
.vht_operation
)) {
2920 "VHT AP is missing VHT capability/operation\n");
2925 mutex_lock(&sdata
->local
->sta_mtx
);
2927 * station info was already allocated and inserted before
2928 * the association and should be available to us
2930 sta
= sta_info_get(sdata
, cbss
->bssid
);
2931 if (WARN_ON(!sta
)) {
2932 mutex_unlock(&sdata
->local
->sta_mtx
);
2937 sband
= local
->hw
.wiphy
->bands
[ieee80211_get_sdata_band(sdata
)];
2939 /* Set up internal HT/VHT capabilities */
2940 if (elems
.ht_cap_elem
&& !(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
))
2941 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata
, sband
,
2942 elems
.ht_cap_elem
, sta
);
2944 if (elems
.vht_cap_elem
&& !(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
))
2945 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata
, sband
,
2946 elems
.vht_cap_elem
, sta
);
2949 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
2950 * in their association response, so ignore that data for our own
2951 * configuration. If it changed since the last beacon, we'll get the
2952 * next beacon and update then.
2956 * If an operating mode notification IE is present, override the
2957 * NSS calculation (that would be done in rate_control_rate_init())
2958 * and use the # of streams from that element.
2960 if (elems
.opmode_notif
&&
2961 !(*elems
.opmode_notif
& IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF
)) {
2964 nss
= *elems
.opmode_notif
& IEEE80211_OPMODE_NOTIF_RX_NSS_MASK
;
2965 nss
>>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT
;
2967 sta
->sta
.rx_nss
= nss
;
2970 rate_control_rate_init(sta
);
2972 if (ifmgd
->flags
& IEEE80211_STA_MFP_ENABLED
)
2973 set_sta_flag(sta
, WLAN_STA_MFP
);
2975 sta
->sta
.wme
= elems
.wmm_param
;
2977 err
= sta_info_move_state(sta
, IEEE80211_STA_ASSOC
);
2978 if (!err
&& !(ifmgd
->flags
& IEEE80211_STA_CONTROL_PORT
))
2979 err
= sta_info_move_state(sta
, IEEE80211_STA_AUTHORIZED
);
2982 "failed to move station %pM to desired state\n",
2984 WARN_ON(__sta_info_destroy(sta
));
2985 mutex_unlock(&sdata
->local
->sta_mtx
);
2990 mutex_unlock(&sdata
->local
->sta_mtx
);
2993 * Always handle WMM once after association regardless
2994 * of the first value the AP uses. Setting -1 here has
2995 * that effect because the AP values is an unsigned
2998 ifmgd
->wmm_last_param_set
= -1;
3000 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_WMM
) && elems
.wmm_param
)
3001 ieee80211_sta_wmm_params(local
, sdata
, elems
.wmm_param
,
3002 elems
.wmm_param_len
);
3004 ieee80211_set_wmm_default(sdata
, false);
3005 changed
|= BSS_CHANGED_QOS
;
3007 /* set AID and assoc capability,
3008 * ieee80211_set_associated() will tell the driver */
3009 bss_conf
->aid
= aid
;
3010 bss_conf
->assoc_capability
= capab_info
;
3011 ieee80211_set_associated(sdata
, cbss
, changed
);
3014 * If we're using 4-addr mode, let the AP know that we're
3015 * doing so, so that it can create the STA VLAN on its side
3017 if (ifmgd
->use_4addr
)
3018 ieee80211_send_4addr_nullfunc(local
, sdata
);
3021 * Start timer to probe the connection to the AP now.
3022 * Also start the timer that will detect beacon loss.
3024 ieee80211_sta_rx_notify(sdata
, (struct ieee80211_hdr
*)mgmt
);
3025 ieee80211_sta_reset_beacon_monitor(sdata
);
3033 static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data
*sdata
,
3034 struct ieee80211_mgmt
*mgmt
,
3037 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3038 struct ieee80211_mgd_assoc_data
*assoc_data
= ifmgd
->assoc_data
;
3039 u16 capab_info
, status_code
, aid
;
3040 struct ieee802_11_elems elems
;
3041 int ac
, uapsd_queues
= -1;
3044 struct cfg80211_bss
*bss
;
3046 sdata_assert_lock(sdata
);
3050 if (!ether_addr_equal(assoc_data
->bss
->bssid
, mgmt
->bssid
))
3054 * AssocResp and ReassocResp have identical structure, so process both
3055 * of them in this function.
3061 reassoc
= ieee80211_is_reassoc_req(mgmt
->frame_control
);
3062 capab_info
= le16_to_cpu(mgmt
->u
.assoc_resp
.capab_info
);
3063 status_code
= le16_to_cpu(mgmt
->u
.assoc_resp
.status_code
);
3064 aid
= le16_to_cpu(mgmt
->u
.assoc_resp
.aid
);
3067 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
3068 reassoc
? "Rea" : "A", mgmt
->sa
,
3069 capab_info
, status_code
, (u16
)(aid
& ~(BIT(15) | BIT(14))));
3071 pos
= mgmt
->u
.assoc_resp
.variable
;
3072 ieee802_11_parse_elems(pos
, len
- (pos
- (u8
*) mgmt
), false, &elems
);
3074 if (status_code
== WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY
&&
3075 elems
.timeout_int
&&
3076 elems
.timeout_int
->type
== WLAN_TIMEOUT_ASSOC_COMEBACK
) {
3078 tu
= le32_to_cpu(elems
.timeout_int
->value
);
3079 ms
= tu
* 1024 / 1000;
3081 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
3083 assoc_data
->timeout
= jiffies
+ msecs_to_jiffies(ms
);
3084 assoc_data
->timeout_started
= true;
3085 if (ms
> IEEE80211_ASSOC_TIMEOUT
)
3086 run_again(sdata
, assoc_data
->timeout
);
3090 bss
= assoc_data
->bss
;
3092 if (status_code
!= WLAN_STATUS_SUCCESS
) {
3093 sdata_info(sdata
, "%pM denied association (code=%d)\n",
3094 mgmt
->sa
, status_code
);
3095 ieee80211_destroy_assoc_data(sdata
, false);
3097 if (!ieee80211_assoc_success(sdata
, bss
, mgmt
, len
)) {
3098 /* oops -- internal error -- send timeout for now */
3099 ieee80211_destroy_assoc_data(sdata
, false);
3100 cfg80211_assoc_timeout(sdata
->dev
, bss
);
3103 sdata_info(sdata
, "associated\n");
3106 * destroy assoc_data afterwards, as otherwise an idle
3107 * recalc after assoc_data is NULL but before associated
3108 * is set can cause the interface to go idle
3110 ieee80211_destroy_assoc_data(sdata
, true);
3112 /* get uapsd queues configuration */
3114 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
3115 if (sdata
->tx_conf
[ac
].uapsd
)
3116 uapsd_queues
|= BIT(ac
);
3119 cfg80211_rx_assoc_resp(sdata
->dev
, bss
, (u8
*)mgmt
, len
, uapsd_queues
);
3122 static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data
*sdata
,
3123 struct ieee80211_mgmt
*mgmt
, size_t len
,
3124 struct ieee80211_rx_status
*rx_status
,
3125 struct ieee802_11_elems
*elems
)
3127 struct ieee80211_local
*local
= sdata
->local
;
3128 struct ieee80211_bss
*bss
;
3129 struct ieee80211_channel
*channel
;
3131 sdata_assert_lock(sdata
);
3133 channel
= ieee80211_get_channel(local
->hw
.wiphy
, rx_status
->freq
);
3137 bss
= ieee80211_bss_info_update(local
, rx_status
, mgmt
, len
, elems
,
3140 sdata
->vif
.bss_conf
.beacon_rate
= bss
->beacon_rate
;
3141 ieee80211_rx_bss_put(local
, bss
);
3146 static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data
*sdata
,
3147 struct sk_buff
*skb
)
3149 struct ieee80211_mgmt
*mgmt
= (void *)skb
->data
;
3150 struct ieee80211_if_managed
*ifmgd
;
3151 struct ieee80211_rx_status
*rx_status
= (void *) skb
->cb
;
3152 size_t baselen
, len
= skb
->len
;
3153 struct ieee802_11_elems elems
;
3155 ifmgd
= &sdata
->u
.mgd
;
3157 sdata_assert_lock(sdata
);
3159 if (!ether_addr_equal(mgmt
->da
, sdata
->vif
.addr
))
3160 return; /* ignore ProbeResp to foreign address */
3162 baselen
= (u8
*) mgmt
->u
.probe_resp
.variable
- (u8
*) mgmt
;
3166 ieee802_11_parse_elems(mgmt
->u
.probe_resp
.variable
, len
- baselen
,
3169 ieee80211_rx_bss_info(sdata
, mgmt
, len
, rx_status
, &elems
);
3171 if (ifmgd
->associated
&&
3172 ether_addr_equal(mgmt
->bssid
, ifmgd
->associated
->bssid
))
3173 ieee80211_reset_ap_probe(sdata
);
3175 if (ifmgd
->auth_data
&& !ifmgd
->auth_data
->bss
->proberesp_ies
&&
3176 ether_addr_equal(mgmt
->bssid
, ifmgd
->auth_data
->bss
->bssid
)) {
3177 /* got probe response, continue with auth */
3178 sdata_info(sdata
, "direct probe responded\n");
3179 ifmgd
->auth_data
->tries
= 0;
3180 ifmgd
->auth_data
->timeout
= jiffies
;
3181 ifmgd
->auth_data
->timeout_started
= true;
3182 run_again(sdata
, ifmgd
->auth_data
->timeout
);
3187 * This is the canonical list of information elements we care about,
3188 * the filter code also gives us all changes to the Microsoft OUI
3189 * (00:50:F2) vendor IE which is used for WMM which we need to track,
3190 * as well as the DTPC IE (part of the Cisco OUI) used for signaling
3191 * changes to requested client power.
3193 * We implement beacon filtering in software since that means we can
3194 * avoid processing the frame here and in cfg80211, and userspace
3195 * will not be able to tell whether the hardware supports it or not.
3197 * XXX: This list needs to be dynamic -- userspace needs to be able to
3198 * add items it requires. It also needs to be able to tell us to
3199 * look out for other vendor IEs.
3201 static const u64 care_about_ies
=
3202 (1ULL << WLAN_EID_COUNTRY
) |
3203 (1ULL << WLAN_EID_ERP_INFO
) |
3204 (1ULL << WLAN_EID_CHANNEL_SWITCH
) |
3205 (1ULL << WLAN_EID_PWR_CONSTRAINT
) |
3206 (1ULL << WLAN_EID_HT_CAPABILITY
) |
3207 (1ULL << WLAN_EID_HT_OPERATION
);
3209 static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data
*sdata
,
3210 struct ieee80211_mgmt
*mgmt
, size_t len
,
3211 struct ieee80211_rx_status
*rx_status
)
3213 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3214 struct ieee80211_bss_conf
*bss_conf
= &sdata
->vif
.bss_conf
;
3216 struct ieee802_11_elems elems
;
3217 struct ieee80211_local
*local
= sdata
->local
;
3218 struct ieee80211_chanctx_conf
*chanctx_conf
;
3219 struct ieee80211_channel
*chan
;
3220 struct sta_info
*sta
;
3226 u8 deauth_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
3228 sdata_assert_lock(sdata
);
3230 /* Process beacon from the current BSS */
3231 baselen
= (u8
*) mgmt
->u
.beacon
.variable
- (u8
*) mgmt
;
3236 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
3237 if (!chanctx_conf
) {
3242 if (rx_status
->freq
!= chanctx_conf
->def
.chan
->center_freq
) {
3246 chan
= chanctx_conf
->def
.chan
;
3249 if (ifmgd
->assoc_data
&& ifmgd
->assoc_data
->need_beacon
&&
3250 ether_addr_equal(mgmt
->bssid
, ifmgd
->assoc_data
->bss
->bssid
)) {
3251 ieee802_11_parse_elems(mgmt
->u
.beacon
.variable
,
3252 len
- baselen
, false, &elems
);
3254 ieee80211_rx_bss_info(sdata
, mgmt
, len
, rx_status
, &elems
);
3255 if (elems
.tim
&& !elems
.parse_error
) {
3256 const struct ieee80211_tim_ie
*tim_ie
= elems
.tim
;
3257 ifmgd
->dtim_period
= tim_ie
->dtim_period
;
3259 ifmgd
->have_beacon
= true;
3260 ifmgd
->assoc_data
->need_beacon
= false;
3261 if (local
->hw
.flags
& IEEE80211_HW_TIMING_BEACON_ONLY
) {
3262 sdata
->vif
.bss_conf
.sync_tsf
=
3263 le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
3264 sdata
->vif
.bss_conf
.sync_device_ts
=
3265 rx_status
->device_timestamp
;
3267 sdata
->vif
.bss_conf
.sync_dtim_count
=
3268 elems
.tim
->dtim_count
;
3270 sdata
->vif
.bss_conf
.sync_dtim_count
= 0;
3272 /* continue assoc process */
3273 ifmgd
->assoc_data
->timeout
= jiffies
;
3274 ifmgd
->assoc_data
->timeout_started
= true;
3275 run_again(sdata
, ifmgd
->assoc_data
->timeout
);
3279 if (!ifmgd
->associated
||
3280 !ether_addr_equal(mgmt
->bssid
, ifmgd
->associated
->bssid
))
3282 bssid
= ifmgd
->associated
->bssid
;
3284 /* Track average RSSI from the Beacon frames of the current AP */
3285 ifmgd
->last_beacon_signal
= rx_status
->signal
;
3286 if (ifmgd
->flags
& IEEE80211_STA_RESET_SIGNAL_AVE
) {
3287 ifmgd
->flags
&= ~IEEE80211_STA_RESET_SIGNAL_AVE
;
3288 ifmgd
->ave_beacon_signal
= rx_status
->signal
* 16;
3289 ifmgd
->last_cqm_event_signal
= 0;
3290 ifmgd
->count_beacon_signal
= 1;
3291 ifmgd
->last_ave_beacon_signal
= 0;
3293 ifmgd
->ave_beacon_signal
=
3294 (IEEE80211_SIGNAL_AVE_WEIGHT
* rx_status
->signal
* 16 +
3295 (16 - IEEE80211_SIGNAL_AVE_WEIGHT
) *
3296 ifmgd
->ave_beacon_signal
) / 16;
3297 ifmgd
->count_beacon_signal
++;
3300 if (ifmgd
->rssi_min_thold
!= ifmgd
->rssi_max_thold
&&
3301 ifmgd
->count_beacon_signal
>= IEEE80211_SIGNAL_AVE_MIN_COUNT
) {
3302 int sig
= ifmgd
->ave_beacon_signal
;
3303 int last_sig
= ifmgd
->last_ave_beacon_signal
;
3306 * if signal crosses either of the boundaries, invoke callback
3307 * with appropriate parameters
3309 if (sig
> ifmgd
->rssi_max_thold
&&
3310 (last_sig
<= ifmgd
->rssi_min_thold
|| last_sig
== 0)) {
3311 ifmgd
->last_ave_beacon_signal
= sig
;
3312 drv_rssi_callback(local
, sdata
, RSSI_EVENT_HIGH
);
3313 } else if (sig
< ifmgd
->rssi_min_thold
&&
3314 (last_sig
>= ifmgd
->rssi_max_thold
||
3316 ifmgd
->last_ave_beacon_signal
= sig
;
3317 drv_rssi_callback(local
, sdata
, RSSI_EVENT_LOW
);
3321 if (bss_conf
->cqm_rssi_thold
&&
3322 ifmgd
->count_beacon_signal
>= IEEE80211_SIGNAL_AVE_MIN_COUNT
&&
3323 !(sdata
->vif
.driver_flags
& IEEE80211_VIF_SUPPORTS_CQM_RSSI
)) {
3324 int sig
= ifmgd
->ave_beacon_signal
/ 16;
3325 int last_event
= ifmgd
->last_cqm_event_signal
;
3326 int thold
= bss_conf
->cqm_rssi_thold
;
3327 int hyst
= bss_conf
->cqm_rssi_hyst
;
3329 (last_event
== 0 || sig
< last_event
- hyst
)) {
3330 ifmgd
->last_cqm_event_signal
= sig
;
3331 ieee80211_cqm_rssi_notify(
3333 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW
,
3335 } else if (sig
> thold
&&
3336 (last_event
== 0 || sig
> last_event
+ hyst
)) {
3337 ifmgd
->last_cqm_event_signal
= sig
;
3338 ieee80211_cqm_rssi_notify(
3340 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH
,
3345 if (ifmgd
->flags
& IEEE80211_STA_CONNECTION_POLL
) {
3346 mlme_dbg_ratelimited(sdata
,
3347 "cancelling AP probe due to a received beacon\n");
3348 ieee80211_reset_ap_probe(sdata
);
3352 * Push the beacon loss detection into the future since
3353 * we are processing a beacon from the AP just now.
3355 ieee80211_sta_reset_beacon_monitor(sdata
);
3357 ncrc
= crc32_be(0, (void *)&mgmt
->u
.beacon
.beacon_int
, 4);
3358 ncrc
= ieee802_11_parse_elems_crc(mgmt
->u
.beacon
.variable
,
3359 len
- baselen
, false, &elems
,
3360 care_about_ies
, ncrc
);
3362 if (local
->hw
.flags
& IEEE80211_HW_PS_NULLFUNC_STACK
) {
3363 bool directed_tim
= ieee80211_check_tim(elems
.tim
,
3367 if (local
->hw
.conf
.dynamic_ps_timeout
> 0) {
3368 if (local
->hw
.conf
.flags
& IEEE80211_CONF_PS
) {
3369 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_PS
;
3370 ieee80211_hw_config(local
,
3371 IEEE80211_CONF_CHANGE_PS
);
3373 ieee80211_send_nullfunc(local
, sdata
, 0);
3374 } else if (!local
->pspolling
&& sdata
->u
.mgd
.powersave
) {
3375 local
->pspolling
= true;
3378 * Here is assumed that the driver will be
3379 * able to send ps-poll frame and receive a
3380 * response even though power save mode is
3381 * enabled, but some drivers might require
3382 * to disable power save here. This needs
3383 * to be investigated.
3385 ieee80211_send_pspoll(local
, sdata
);
3390 if (sdata
->vif
.p2p
) {
3391 struct ieee80211_p2p_noa_attr noa
= {};
3394 ret
= cfg80211_get_p2p_attr(mgmt
->u
.beacon
.variable
,
3396 IEEE80211_P2P_ATTR_ABSENCE_NOTICE
,
3397 (u8
*) &noa
, sizeof(noa
));
3399 if (sdata
->u
.mgd
.p2p_noa_index
!= noa
.index
) {
3400 /* valid noa_attr and index changed */
3401 sdata
->u
.mgd
.p2p_noa_index
= noa
.index
;
3402 memcpy(&bss_conf
->p2p_noa_attr
, &noa
, sizeof(noa
));
3403 changed
|= BSS_CHANGED_P2P_PS
;
3405 * make sure we update all information, the CRC
3406 * mechanism doesn't look at P2P attributes.
3408 ifmgd
->beacon_crc_valid
= false;
3410 } else if (sdata
->u
.mgd
.p2p_noa_index
!= -1) {
3411 /* noa_attr not found and we had valid noa_attr before */
3412 sdata
->u
.mgd
.p2p_noa_index
= -1;
3413 memset(&bss_conf
->p2p_noa_attr
, 0, sizeof(bss_conf
->p2p_noa_attr
));
3414 changed
|= BSS_CHANGED_P2P_PS
;
3415 ifmgd
->beacon_crc_valid
= false;
3419 if (ifmgd
->csa_waiting_bcn
)
3420 ieee80211_chswitch_post_beacon(sdata
);
3422 if (ncrc
== ifmgd
->beacon_crc
&& ifmgd
->beacon_crc_valid
)
3424 ifmgd
->beacon_crc
= ncrc
;
3425 ifmgd
->beacon_crc_valid
= true;
3427 ieee80211_rx_bss_info(sdata
, mgmt
, len
, rx_status
, &elems
);
3429 ieee80211_sta_process_chanswitch(sdata
, rx_status
->mactime
,
3430 rx_status
->device_timestamp
,
3433 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_WMM
) &&
3434 ieee80211_sta_wmm_params(local
, sdata
, elems
.wmm_param
,
3435 elems
.wmm_param_len
))
3436 changed
|= BSS_CHANGED_QOS
;
3439 * If we haven't had a beacon before, tell the driver about the
3440 * DTIM period (and beacon timing if desired) now.
3442 if (!ifmgd
->have_beacon
) {
3443 /* a few bogus AP send dtim_period = 0 or no TIM IE */
3445 bss_conf
->dtim_period
= elems
.tim
->dtim_period
?: 1;
3447 bss_conf
->dtim_period
= 1;
3449 if (local
->hw
.flags
& IEEE80211_HW_TIMING_BEACON_ONLY
) {
3450 sdata
->vif
.bss_conf
.sync_tsf
=
3451 le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
3452 sdata
->vif
.bss_conf
.sync_device_ts
=
3453 rx_status
->device_timestamp
;
3455 sdata
->vif
.bss_conf
.sync_dtim_count
=
3456 elems
.tim
->dtim_count
;
3458 sdata
->vif
.bss_conf
.sync_dtim_count
= 0;
3461 changed
|= BSS_CHANGED_BEACON_INFO
;
3462 ifmgd
->have_beacon
= true;
3464 mutex_lock(&local
->iflist_mtx
);
3465 ieee80211_recalc_ps(local
, -1);
3466 mutex_unlock(&local
->iflist_mtx
);
3468 ieee80211_recalc_ps_vif(sdata
);
3471 if (elems
.erp_info
) {
3473 erp_value
= elems
.erp_info
[0];
3477 changed
|= ieee80211_handle_bss_capability(sdata
,
3478 le16_to_cpu(mgmt
->u
.beacon
.capab_info
),
3479 erp_valid
, erp_value
);
3481 mutex_lock(&local
->sta_mtx
);
3482 sta
= sta_info_get(sdata
, bssid
);
3484 if (ieee80211_config_bw(sdata
, sta
,
3485 elems
.ht_cap_elem
, elems
.ht_operation
,
3486 elems
.vht_operation
, bssid
, &changed
)) {
3487 mutex_unlock(&local
->sta_mtx
);
3488 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
,
3489 WLAN_REASON_DEAUTH_LEAVING
,
3491 cfg80211_tx_mlme_mgmt(sdata
->dev
, deauth_buf
,
3492 sizeof(deauth_buf
));
3496 if (sta
&& elems
.opmode_notif
)
3497 ieee80211_vht_handle_opmode(sdata
, sta
, *elems
.opmode_notif
,
3498 rx_status
->band
, true);
3499 mutex_unlock(&local
->sta_mtx
);
3501 changed
|= ieee80211_handle_pwr_constr(sdata
, chan
, mgmt
,
3503 elems
.country_elem_len
,
3504 elems
.pwr_constr_elem
,
3505 elems
.cisco_dtpc_elem
);
3507 ieee80211_bss_info_change_notify(sdata
, changed
);
3510 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
3511 struct sk_buff
*skb
)
3513 struct ieee80211_rx_status
*rx_status
;
3514 struct ieee80211_mgmt
*mgmt
;
3516 struct ieee802_11_elems elems
;
3519 rx_status
= (struct ieee80211_rx_status
*) skb
->cb
;
3520 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
3521 fc
= le16_to_cpu(mgmt
->frame_control
);
3525 switch (fc
& IEEE80211_FCTL_STYPE
) {
3526 case IEEE80211_STYPE_BEACON
:
3527 ieee80211_rx_mgmt_beacon(sdata
, mgmt
, skb
->len
, rx_status
);
3529 case IEEE80211_STYPE_PROBE_RESP
:
3530 ieee80211_rx_mgmt_probe_resp(sdata
, skb
);
3532 case IEEE80211_STYPE_AUTH
:
3533 ieee80211_rx_mgmt_auth(sdata
, mgmt
, skb
->len
);
3535 case IEEE80211_STYPE_DEAUTH
:
3536 ieee80211_rx_mgmt_deauth(sdata
, mgmt
, skb
->len
);
3538 case IEEE80211_STYPE_DISASSOC
:
3539 ieee80211_rx_mgmt_disassoc(sdata
, mgmt
, skb
->len
);
3541 case IEEE80211_STYPE_ASSOC_RESP
:
3542 case IEEE80211_STYPE_REASSOC_RESP
:
3543 ieee80211_rx_mgmt_assoc_resp(sdata
, mgmt
, skb
->len
);
3545 case IEEE80211_STYPE_ACTION
:
3546 if (mgmt
->u
.action
.category
== WLAN_CATEGORY_SPECTRUM_MGMT
) {
3547 ies_len
= skb
->len
-
3548 offsetof(struct ieee80211_mgmt
,
3549 u
.action
.u
.chan_switch
.variable
);
3554 ieee802_11_parse_elems(
3555 mgmt
->u
.action
.u
.chan_switch
.variable
,
3556 ies_len
, true, &elems
);
3558 if (elems
.parse_error
)
3561 ieee80211_sta_process_chanswitch(sdata
,
3563 rx_status
->device_timestamp
,
3565 } else if (mgmt
->u
.action
.category
== WLAN_CATEGORY_PUBLIC
) {
3566 ies_len
= skb
->len
-
3567 offsetof(struct ieee80211_mgmt
,
3568 u
.action
.u
.ext_chan_switch
.variable
);
3573 ieee802_11_parse_elems(
3574 mgmt
->u
.action
.u
.ext_chan_switch
.variable
,
3575 ies_len
, true, &elems
);
3577 if (elems
.parse_error
)
3580 /* for the handling code pretend this was also an IE */
3581 elems
.ext_chansw_ie
=
3582 &mgmt
->u
.action
.u
.ext_chan_switch
.data
;
3584 ieee80211_sta_process_chanswitch(sdata
,
3586 rx_status
->device_timestamp
,
3591 sdata_unlock(sdata
);
3594 static void ieee80211_sta_timer(unsigned long data
)
3596 struct ieee80211_sub_if_data
*sdata
=
3597 (struct ieee80211_sub_if_data
*) data
;
3599 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
3602 static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data
*sdata
,
3603 u8
*bssid
, u8 reason
, bool tx
)
3605 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
3607 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
, reason
,
3610 cfg80211_tx_mlme_mgmt(sdata
->dev
, frame_buf
,
3611 IEEE80211_DEAUTH_FRAME_LEN
);
3614 static int ieee80211_probe_auth(struct ieee80211_sub_if_data
*sdata
)
3616 struct ieee80211_local
*local
= sdata
->local
;
3617 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3618 struct ieee80211_mgd_auth_data
*auth_data
= ifmgd
->auth_data
;
3621 sdata_assert_lock(sdata
);
3623 if (WARN_ON_ONCE(!auth_data
))
3628 if (auth_data
->tries
> IEEE80211_AUTH_MAX_TRIES
) {
3629 sdata_info(sdata
, "authentication with %pM timed out\n",
3630 auth_data
->bss
->bssid
);
3633 * Most likely AP is not in the range so remove the
3634 * bss struct for that AP.
3636 cfg80211_unlink_bss(local
->hw
.wiphy
, auth_data
->bss
);
3641 drv_mgd_prepare_tx(local
, sdata
);
3643 if (auth_data
->bss
->proberesp_ies
) {
3647 sdata_info(sdata
, "send auth to %pM (try %d/%d)\n",
3648 auth_data
->bss
->bssid
, auth_data
->tries
,
3649 IEEE80211_AUTH_MAX_TRIES
);
3651 auth_data
->expected_transaction
= 2;
3653 if (auth_data
->algorithm
== WLAN_AUTH_SAE
) {
3654 trans
= auth_data
->sae_trans
;
3655 status
= auth_data
->sae_status
;
3656 auth_data
->expected_transaction
= trans
;
3659 if (local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
)
3660 tx_flags
= IEEE80211_TX_CTL_REQ_TX_STATUS
|
3661 IEEE80211_TX_INTFL_MLME_CONN_TX
;
3663 ieee80211_send_auth(sdata
, trans
, auth_data
->algorithm
, status
,
3664 auth_data
->data
, auth_data
->data_len
,
3665 auth_data
->bss
->bssid
,
3666 auth_data
->bss
->bssid
, NULL
, 0, 0,
3671 sdata_info(sdata
, "direct probe to %pM (try %d/%i)\n",
3672 auth_data
->bss
->bssid
, auth_data
->tries
,
3673 IEEE80211_AUTH_MAX_TRIES
);
3676 ssidie
= ieee80211_bss_get_ie(auth_data
->bss
, WLAN_EID_SSID
);
3682 * Direct probe is sent to broadcast address as some APs
3683 * will not answer to direct packet in unassociated state.
3685 ieee80211_send_probe_req(sdata
, sdata
->vif
.addr
, NULL
,
3686 ssidie
+ 2, ssidie
[1],
3687 NULL
, 0, (u32
) -1, true, 0,
3688 auth_data
->bss
->channel
, false);
3692 if (tx_flags
== 0) {
3693 auth_data
->timeout
= jiffies
+ IEEE80211_AUTH_TIMEOUT
;
3694 auth_data
->timeout_started
= true;
3695 run_again(sdata
, auth_data
->timeout
);
3697 auth_data
->timeout
=
3698 round_jiffies_up(jiffies
+ IEEE80211_AUTH_TIMEOUT_LONG
);
3699 auth_data
->timeout_started
= true;
3700 run_again(sdata
, auth_data
->timeout
);
3706 static int ieee80211_do_assoc(struct ieee80211_sub_if_data
*sdata
)
3708 struct ieee80211_mgd_assoc_data
*assoc_data
= sdata
->u
.mgd
.assoc_data
;
3709 struct ieee80211_local
*local
= sdata
->local
;
3711 sdata_assert_lock(sdata
);
3713 assoc_data
->tries
++;
3714 if (assoc_data
->tries
> IEEE80211_ASSOC_MAX_TRIES
) {
3715 sdata_info(sdata
, "association with %pM timed out\n",
3716 assoc_data
->bss
->bssid
);
3719 * Most likely AP is not in the range so remove the
3720 * bss struct for that AP.
3722 cfg80211_unlink_bss(local
->hw
.wiphy
, assoc_data
->bss
);
3727 sdata_info(sdata
, "associate with %pM (try %d/%d)\n",
3728 assoc_data
->bss
->bssid
, assoc_data
->tries
,
3729 IEEE80211_ASSOC_MAX_TRIES
);
3730 ieee80211_send_assoc(sdata
);
3732 if (!(local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
)) {
3733 assoc_data
->timeout
= jiffies
+ IEEE80211_ASSOC_TIMEOUT
;
3734 assoc_data
->timeout_started
= true;
3735 run_again(sdata
, assoc_data
->timeout
);
3737 assoc_data
->timeout
=
3738 round_jiffies_up(jiffies
+
3739 IEEE80211_ASSOC_TIMEOUT_LONG
);
3740 assoc_data
->timeout_started
= true;
3741 run_again(sdata
, assoc_data
->timeout
);
3747 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data
*sdata
,
3748 __le16 fc
, bool acked
)
3750 struct ieee80211_local
*local
= sdata
->local
;
3752 sdata
->u
.mgd
.status_fc
= fc
;
3753 sdata
->u
.mgd
.status_acked
= acked
;
3754 sdata
->u
.mgd
.status_received
= true;
3756 ieee80211_queue_work(&local
->hw
, &sdata
->work
);
3759 void ieee80211_sta_work(struct ieee80211_sub_if_data
*sdata
)
3761 struct ieee80211_local
*local
= sdata
->local
;
3762 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3766 if (ifmgd
->status_received
) {
3767 __le16 fc
= ifmgd
->status_fc
;
3768 bool status_acked
= ifmgd
->status_acked
;
3770 ifmgd
->status_received
= false;
3771 if (ifmgd
->auth_data
&&
3772 (ieee80211_is_probe_req(fc
) || ieee80211_is_auth(fc
))) {
3774 ifmgd
->auth_data
->timeout
=
3775 jiffies
+ IEEE80211_AUTH_TIMEOUT_SHORT
;
3776 run_again(sdata
, ifmgd
->auth_data
->timeout
);
3778 ifmgd
->auth_data
->timeout
= jiffies
- 1;
3780 ifmgd
->auth_data
->timeout_started
= true;
3781 } else if (ifmgd
->assoc_data
&&
3782 (ieee80211_is_assoc_req(fc
) ||
3783 ieee80211_is_reassoc_req(fc
))) {
3785 ifmgd
->assoc_data
->timeout
=
3786 jiffies
+ IEEE80211_ASSOC_TIMEOUT_SHORT
;
3787 run_again(sdata
, ifmgd
->assoc_data
->timeout
);
3789 ifmgd
->assoc_data
->timeout
= jiffies
- 1;
3791 ifmgd
->assoc_data
->timeout_started
= true;
3795 if (ifmgd
->auth_data
&& ifmgd
->auth_data
->timeout_started
&&
3796 time_after(jiffies
, ifmgd
->auth_data
->timeout
)) {
3797 if (ifmgd
->auth_data
->done
) {
3799 * ok ... we waited for assoc but userspace didn't,
3800 * so let's just kill the auth data
3802 ieee80211_destroy_auth_data(sdata
, false);
3803 } else if (ieee80211_probe_auth(sdata
)) {
3806 memcpy(bssid
, ifmgd
->auth_data
->bss
->bssid
, ETH_ALEN
);
3808 ieee80211_destroy_auth_data(sdata
, false);
3810 cfg80211_auth_timeout(sdata
->dev
, bssid
);
3812 } else if (ifmgd
->auth_data
&& ifmgd
->auth_data
->timeout_started
)
3813 run_again(sdata
, ifmgd
->auth_data
->timeout
);
3815 if (ifmgd
->assoc_data
&& ifmgd
->assoc_data
->timeout_started
&&
3816 time_after(jiffies
, ifmgd
->assoc_data
->timeout
)) {
3817 if ((ifmgd
->assoc_data
->need_beacon
&& !ifmgd
->have_beacon
) ||
3818 ieee80211_do_assoc(sdata
)) {
3819 struct cfg80211_bss
*bss
= ifmgd
->assoc_data
->bss
;
3821 ieee80211_destroy_assoc_data(sdata
, false);
3822 cfg80211_assoc_timeout(sdata
->dev
, bss
);
3824 } else if (ifmgd
->assoc_data
&& ifmgd
->assoc_data
->timeout_started
)
3825 run_again(sdata
, ifmgd
->assoc_data
->timeout
);
3827 if (ifmgd
->flags
& IEEE80211_STA_CONNECTION_POLL
&&
3828 ifmgd
->associated
) {
3832 memcpy(bssid
, ifmgd
->associated
->bssid
, ETH_ALEN
);
3834 if (local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
)
3835 max_tries
= max_nullfunc_tries
;
3837 max_tries
= max_probe_tries
;
3839 /* ACK received for nullfunc probing frame */
3840 if (!ifmgd
->probe_send_count
)
3841 ieee80211_reset_ap_probe(sdata
);
3842 else if (ifmgd
->nullfunc_failed
) {
3843 if (ifmgd
->probe_send_count
< max_tries
) {
3845 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
3846 bssid
, ifmgd
->probe_send_count
,
3848 ieee80211_mgd_probe_ap_send(sdata
);
3851 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
3853 ieee80211_sta_connection_lost(sdata
, bssid
,
3854 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY
,
3857 } else if (time_is_after_jiffies(ifmgd
->probe_timeout
))
3858 run_again(sdata
, ifmgd
->probe_timeout
);
3859 else if (local
->hw
.flags
& IEEE80211_HW_REPORTS_TX_ACK_STATUS
) {
3861 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
3862 bssid
, probe_wait_ms
);
3863 ieee80211_sta_connection_lost(sdata
, bssid
,
3864 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY
, false);
3865 } else if (ifmgd
->probe_send_count
< max_tries
) {
3867 "No probe response from AP %pM after %dms, try %d/%i\n",
3868 bssid
, probe_wait_ms
,
3869 ifmgd
->probe_send_count
, max_tries
);
3870 ieee80211_mgd_probe_ap_send(sdata
);
3873 * We actually lost the connection ... or did we?
3876 wiphy_debug(local
->hw
.wiphy
,
3877 "%s: No probe response from AP %pM"
3878 " after %dms, disconnecting.\n",
3880 bssid
, probe_wait_ms
);
3882 ieee80211_sta_connection_lost(sdata
, bssid
,
3883 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY
, false);
3887 sdata_unlock(sdata
);
3890 static void ieee80211_sta_bcn_mon_timer(unsigned long data
)
3892 struct ieee80211_sub_if_data
*sdata
=
3893 (struct ieee80211_sub_if_data
*) data
;
3894 struct ieee80211_local
*local
= sdata
->local
;
3895 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3897 if (local
->quiescing
)
3900 if (sdata
->vif
.csa_active
&& !ifmgd
->csa_waiting_bcn
)
3903 sdata
->u
.mgd
.connection_loss
= false;
3904 ieee80211_queue_work(&sdata
->local
->hw
,
3905 &sdata
->u
.mgd
.beacon_connection_loss_work
);
3908 static void ieee80211_sta_conn_mon_timer(unsigned long data
)
3910 struct ieee80211_sub_if_data
*sdata
=
3911 (struct ieee80211_sub_if_data
*) data
;
3912 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3913 struct ieee80211_local
*local
= sdata
->local
;
3915 if (local
->quiescing
)
3918 if (sdata
->vif
.csa_active
&& !ifmgd
->csa_waiting_bcn
)
3921 ieee80211_queue_work(&local
->hw
, &ifmgd
->monitor_work
);
3924 static void ieee80211_sta_monitor_work(struct work_struct
*work
)
3926 struct ieee80211_sub_if_data
*sdata
=
3927 container_of(work
, struct ieee80211_sub_if_data
,
3928 u
.mgd
.monitor_work
);
3930 ieee80211_mgd_probe_ap(sdata
, false);
3933 static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data
*sdata
)
3937 if (sdata
->vif
.type
== NL80211_IFTYPE_STATION
) {
3938 __ieee80211_stop_poll(sdata
);
3940 /* let's probe the connection once */
3941 flags
= sdata
->local
->hw
.flags
;
3942 if (!(flags
& IEEE80211_HW_CONNECTION_MONITOR
))
3943 ieee80211_queue_work(&sdata
->local
->hw
,
3944 &sdata
->u
.mgd
.monitor_work
);
3945 /* and do all the other regular work too */
3946 ieee80211_queue_work(&sdata
->local
->hw
, &sdata
->work
);
3951 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data
*sdata
)
3953 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3954 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
3958 if (ifmgd
->auth_data
|| ifmgd
->assoc_data
) {
3959 const u8
*bssid
= ifmgd
->auth_data
?
3960 ifmgd
->auth_data
->bss
->bssid
:
3961 ifmgd
->assoc_data
->bss
->bssid
;
3964 * If we are trying to authenticate / associate while suspending,
3965 * cfg80211 won't know and won't actually abort those attempts,
3966 * thus we need to do that ourselves.
3968 ieee80211_send_deauth_disassoc(sdata
, bssid
,
3969 IEEE80211_STYPE_DEAUTH
,
3970 WLAN_REASON_DEAUTH_LEAVING
,
3972 if (ifmgd
->assoc_data
)
3973 ieee80211_destroy_assoc_data(sdata
, false);
3974 if (ifmgd
->auth_data
)
3975 ieee80211_destroy_auth_data(sdata
, false);
3976 cfg80211_tx_mlme_mgmt(sdata
->dev
, frame_buf
,
3977 IEEE80211_DEAUTH_FRAME_LEN
);
3980 sdata_unlock(sdata
);
3983 void ieee80211_sta_restart(struct ieee80211_sub_if_data
*sdata
)
3985 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
3988 if (!ifmgd
->associated
) {
3989 sdata_unlock(sdata
);
3993 if (sdata
->flags
& IEEE80211_SDATA_DISCONNECT_RESUME
) {
3994 sdata
->flags
&= ~IEEE80211_SDATA_DISCONNECT_RESUME
;
3995 mlme_dbg(sdata
, "driver requested disconnect after resume\n");
3996 ieee80211_sta_connection_lost(sdata
,
3997 ifmgd
->associated
->bssid
,
3998 WLAN_REASON_UNSPECIFIED
,
4000 sdata_unlock(sdata
);
4003 sdata_unlock(sdata
);
4007 /* interface setup */
4008 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data
*sdata
)
4010 struct ieee80211_if_managed
*ifmgd
;
4012 ifmgd
= &sdata
->u
.mgd
;
4013 INIT_WORK(&ifmgd
->monitor_work
, ieee80211_sta_monitor_work
);
4014 INIT_WORK(&ifmgd
->chswitch_work
, ieee80211_chswitch_work
);
4015 INIT_WORK(&ifmgd
->beacon_connection_loss_work
,
4016 ieee80211_beacon_connection_loss_work
);
4017 INIT_WORK(&ifmgd
->csa_connection_drop_work
,
4018 ieee80211_csa_connection_drop_work
);
4019 INIT_WORK(&ifmgd
->request_smps_work
, ieee80211_request_smps_mgd_work
);
4020 INIT_DELAYED_WORK(&ifmgd
->tdls_peer_del_work
,
4021 ieee80211_tdls_peer_del_work
);
4022 setup_timer(&ifmgd
->timer
, ieee80211_sta_timer
,
4023 (unsigned long) sdata
);
4024 setup_timer(&ifmgd
->bcn_mon_timer
, ieee80211_sta_bcn_mon_timer
,
4025 (unsigned long) sdata
);
4026 setup_timer(&ifmgd
->conn_mon_timer
, ieee80211_sta_conn_mon_timer
,
4027 (unsigned long) sdata
);
4028 setup_timer(&ifmgd
->chswitch_timer
, ieee80211_chswitch_timer
,
4029 (unsigned long) sdata
);
4030 INIT_DELAYED_WORK(&ifmgd
->tx_tspec_wk
,
4031 ieee80211_sta_handle_tspec_ac_params_wk
);
4034 ifmgd
->powersave
= sdata
->wdev
.ps
;
4035 ifmgd
->uapsd_queues
= sdata
->local
->hw
.uapsd_queues
;
4036 ifmgd
->uapsd_max_sp_len
= sdata
->local
->hw
.uapsd_max_sp_len
;
4037 ifmgd
->p2p_noa_index
= -1;
4039 if (sdata
->local
->hw
.wiphy
->features
& NL80211_FEATURE_DYNAMIC_SMPS
)
4040 ifmgd
->req_smps
= IEEE80211_SMPS_AUTOMATIC
;
4042 ifmgd
->req_smps
= IEEE80211_SMPS_OFF
;
4044 /* Setup TDLS data */
4045 spin_lock_init(&ifmgd
->teardown_lock
);
4046 ifmgd
->teardown_skb
= NULL
;
4047 ifmgd
->orig_teardown_skb
= NULL
;
4050 /* scan finished notification */
4051 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local
*local
)
4053 struct ieee80211_sub_if_data
*sdata
;
4055 /* Restart STA timers */
4057 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
4058 if (ieee80211_sdata_running(sdata
))
4059 ieee80211_restart_sta_timer(sdata
);
4064 int ieee80211_max_network_latency(struct notifier_block
*nb
,
4065 unsigned long data
, void *dummy
)
4067 s32 latency_usec
= (s32
) data
;
4068 struct ieee80211_local
*local
=
4069 container_of(nb
, struct ieee80211_local
,
4070 network_latency_notifier
);
4072 mutex_lock(&local
->iflist_mtx
);
4073 ieee80211_recalc_ps(local
, latency_usec
);
4074 mutex_unlock(&local
->iflist_mtx
);
4079 static u8
ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data
*sdata
,
4080 struct cfg80211_bss
*cbss
)
4082 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4083 const u8
*ht_cap_ie
, *vht_cap_ie
;
4084 const struct ieee80211_ht_cap
*ht_cap
;
4085 const struct ieee80211_vht_cap
*vht_cap
;
4088 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
)
4091 ht_cap_ie
= ieee80211_bss_get_ie(cbss
, WLAN_EID_HT_CAPABILITY
);
4092 if (ht_cap_ie
&& ht_cap_ie
[1] >= sizeof(*ht_cap
)) {
4093 ht_cap
= (void *)(ht_cap_ie
+ 2);
4094 chains
= ieee80211_mcs_to_chains(&ht_cap
->mcs
);
4096 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
4097 * "Tx Unequal Modulation Supported" fields.
4101 if (ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
)
4104 vht_cap_ie
= ieee80211_bss_get_ie(cbss
, WLAN_EID_VHT_CAPABILITY
);
4105 if (vht_cap_ie
&& vht_cap_ie
[1] >= sizeof(*vht_cap
)) {
4109 vht_cap
= (void *)(vht_cap_ie
+ 2);
4110 tx_mcs_map
= le16_to_cpu(vht_cap
->supp_mcs
.tx_mcs_map
);
4111 for (nss
= 8; nss
> 0; nss
--) {
4112 if (((tx_mcs_map
>> (2 * (nss
- 1))) & 3) !=
4113 IEEE80211_VHT_MCS_NOT_SUPPORTED
)
4116 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
4117 chains
= max(chains
, nss
);
4123 static int ieee80211_prep_channel(struct ieee80211_sub_if_data
*sdata
,
4124 struct cfg80211_bss
*cbss
)
4126 struct ieee80211_local
*local
= sdata
->local
;
4127 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4128 const struct ieee80211_ht_cap
*ht_cap
= NULL
;
4129 const struct ieee80211_ht_operation
*ht_oper
= NULL
;
4130 const struct ieee80211_vht_operation
*vht_oper
= NULL
;
4131 struct ieee80211_supported_band
*sband
;
4132 struct cfg80211_chan_def chandef
;
4135 sband
= local
->hw
.wiphy
->bands
[cbss
->channel
->band
];
4137 ifmgd
->flags
&= ~(IEEE80211_STA_DISABLE_40MHZ
|
4138 IEEE80211_STA_DISABLE_80P80MHZ
|
4139 IEEE80211_STA_DISABLE_160MHZ
);
4143 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_HT
) &&
4144 sband
->ht_cap
.ht_supported
) {
4145 const u8
*ht_oper_ie
, *ht_cap_ie
;
4147 ht_oper_ie
= ieee80211_bss_get_ie(cbss
, WLAN_EID_HT_OPERATION
);
4148 if (ht_oper_ie
&& ht_oper_ie
[1] >= sizeof(*ht_oper
))
4149 ht_oper
= (void *)(ht_oper_ie
+ 2);
4151 ht_cap_ie
= ieee80211_bss_get_ie(cbss
, WLAN_EID_HT_CAPABILITY
);
4152 if (ht_cap_ie
&& ht_cap_ie
[1] >= sizeof(*ht_cap
))
4153 ht_cap
= (void *)(ht_cap_ie
+ 2);
4156 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
4161 if (!(ifmgd
->flags
& IEEE80211_STA_DISABLE_VHT
) &&
4162 sband
->vht_cap
.vht_supported
) {
4163 const u8
*vht_oper_ie
, *vht_cap
;
4165 vht_oper_ie
= ieee80211_bss_get_ie(cbss
,
4166 WLAN_EID_VHT_OPERATION
);
4167 if (vht_oper_ie
&& vht_oper_ie
[1] >= sizeof(*vht_oper
))
4168 vht_oper
= (void *)(vht_oper_ie
+ 2);
4169 if (vht_oper
&& !ht_oper
) {
4172 "AP advertised VHT without HT, disabling both\n");
4173 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
4174 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4177 vht_cap
= ieee80211_bss_get_ie(cbss
, WLAN_EID_VHT_CAPABILITY
);
4178 if (!vht_cap
|| vht_cap
[1] < sizeof(struct ieee80211_vht_cap
)) {
4179 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4184 ifmgd
->flags
|= ieee80211_determine_chantype(sdata
, sband
,
4186 ht_cap
, ht_oper
, vht_oper
,
4189 sdata
->needed_rx_chains
= min(ieee80211_ht_vht_rx_chains(sdata
, cbss
),
4194 /* will change later if needed */
4195 sdata
->smps_mode
= IEEE80211_SMPS_OFF
;
4197 mutex_lock(&local
->mtx
);
4199 * If this fails (possibly due to channel context sharing
4200 * on incompatible channels, e.g. 80+80 and 160 sharing the
4201 * same control channel) try to use a smaller bandwidth.
4203 ret
= ieee80211_vif_use_channel(sdata
, &chandef
,
4204 IEEE80211_CHANCTX_SHARED
);
4206 /* don't downgrade for 5 and 10 MHz channels, though. */
4207 if (chandef
.width
== NL80211_CHAN_WIDTH_5
||
4208 chandef
.width
== NL80211_CHAN_WIDTH_10
)
4211 while (ret
&& chandef
.width
!= NL80211_CHAN_WIDTH_20_NOHT
) {
4212 ifmgd
->flags
|= ieee80211_chandef_downgrade(&chandef
);
4213 ret
= ieee80211_vif_use_channel(sdata
, &chandef
,
4214 IEEE80211_CHANCTX_SHARED
);
4217 mutex_unlock(&local
->mtx
);
4221 static int ieee80211_prep_connection(struct ieee80211_sub_if_data
*sdata
,
4222 struct cfg80211_bss
*cbss
, bool assoc
)
4224 struct ieee80211_local
*local
= sdata
->local
;
4225 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4226 struct ieee80211_bss
*bss
= (void *)cbss
->priv
;
4227 struct sta_info
*new_sta
= NULL
;
4228 struct ieee80211_supported_band
*sband
;
4229 struct ieee80211_sta_ht_cap sta_ht_cap
;
4230 bool have_sta
= false, is_override
= false;
4233 sband
= local
->hw
.wiphy
->bands
[cbss
->channel
->band
];
4235 if (WARN_ON(!ifmgd
->auth_data
&& !ifmgd
->assoc_data
))
4240 have_sta
= sta_info_get(sdata
, cbss
->bssid
);
4245 new_sta
= sta_info_alloc(sdata
, cbss
->bssid
, GFP_KERNEL
);
4250 memcpy(&sta_ht_cap
, &sband
->ht_cap
, sizeof(sta_ht_cap
));
4251 ieee80211_apply_htcap_overrides(sdata
, &sta_ht_cap
);
4253 is_override
= (sta_ht_cap
.cap
& IEEE80211_HT_CAP_SUP_WIDTH_20_40
) !=
4254 (sband
->ht_cap
.cap
&
4255 IEEE80211_HT_CAP_SUP_WIDTH_20_40
);
4257 if (new_sta
|| is_override
) {
4258 err
= ieee80211_prep_channel(sdata
, cbss
);
4261 sta_info_free(local
, new_sta
);
4267 u32 rates
= 0, basic_rates
= 0;
4268 bool have_higher_than_11mbit
;
4269 int min_rate
= INT_MAX
, min_rate_index
= -1;
4270 struct ieee80211_chanctx_conf
*chanctx_conf
;
4271 const struct cfg80211_bss_ies
*ies
;
4272 int shift
= ieee80211_vif_get_shift(&sdata
->vif
);
4276 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
4277 if (WARN_ON(!chanctx_conf
)) {
4279 sta_info_free(local
, new_sta
);
4282 rate_flags
= ieee80211_chandef_rate_flags(&chanctx_conf
->def
);
4285 ieee80211_get_rates(sband
, bss
->supp_rates
,
4286 bss
->supp_rates_len
,
4287 &rates
, &basic_rates
,
4288 &have_higher_than_11mbit
,
4289 &min_rate
, &min_rate_index
,
4293 * This used to be a workaround for basic rates missing
4294 * in the association response frame. Now that we no
4295 * longer use the basic rates from there, it probably
4296 * doesn't happen any more, but keep the workaround so
4297 * in case some *other* APs are buggy in different ways
4298 * we can connect -- with a warning.
4300 if (!basic_rates
&& min_rate_index
>= 0) {
4302 "No basic rates, using min rate instead\n");
4303 basic_rates
= BIT(min_rate_index
);
4306 new_sta
->sta
.supp_rates
[cbss
->channel
->band
] = rates
;
4307 sdata
->vif
.bss_conf
.basic_rates
= basic_rates
;
4309 /* cf. IEEE 802.11 9.2.12 */
4310 if (cbss
->channel
->band
== IEEE80211_BAND_2GHZ
&&
4311 have_higher_than_11mbit
)
4312 sdata
->flags
|= IEEE80211_SDATA_OPERATING_GMODE
;
4314 sdata
->flags
&= ~IEEE80211_SDATA_OPERATING_GMODE
;
4316 memcpy(ifmgd
->bssid
, cbss
->bssid
, ETH_ALEN
);
4318 /* set timing information */
4319 sdata
->vif
.bss_conf
.beacon_int
= cbss
->beacon_interval
;
4321 ies
= rcu_dereference(cbss
->beacon_ies
);
4325 sdata
->vif
.bss_conf
.sync_tsf
= ies
->tsf
;
4326 sdata
->vif
.bss_conf
.sync_device_ts
=
4327 bss
->device_ts_beacon
;
4328 tim_ie
= cfg80211_find_ie(WLAN_EID_TIM
,
4329 ies
->data
, ies
->len
);
4330 if (tim_ie
&& tim_ie
[1] >= 2)
4331 sdata
->vif
.bss_conf
.sync_dtim_count
= tim_ie
[2];
4333 sdata
->vif
.bss_conf
.sync_dtim_count
= 0;
4334 } else if (!(local
->hw
.flags
&
4335 IEEE80211_HW_TIMING_BEACON_ONLY
)) {
4336 ies
= rcu_dereference(cbss
->proberesp_ies
);
4337 /* must be non-NULL since beacon IEs were NULL */
4338 sdata
->vif
.bss_conf
.sync_tsf
= ies
->tsf
;
4339 sdata
->vif
.bss_conf
.sync_device_ts
=
4340 bss
->device_ts_presp
;
4341 sdata
->vif
.bss_conf
.sync_dtim_count
= 0;
4343 sdata
->vif
.bss_conf
.sync_tsf
= 0;
4344 sdata
->vif
.bss_conf
.sync_device_ts
= 0;
4345 sdata
->vif
.bss_conf
.sync_dtim_count
= 0;
4349 /* tell driver about BSSID, basic rates and timing */
4350 ieee80211_bss_info_change_notify(sdata
,
4351 BSS_CHANGED_BSSID
| BSS_CHANGED_BASIC_RATES
|
4352 BSS_CHANGED_BEACON_INT
);
4355 sta_info_pre_move_state(new_sta
, IEEE80211_STA_AUTH
);
4357 err
= sta_info_insert(new_sta
);
4361 "failed to insert STA entry for the AP (error %d)\n",
4366 WARN_ON_ONCE(!ether_addr_equal(ifmgd
->bssid
, cbss
->bssid
));
4372 int ieee80211_mgd_auth(struct ieee80211_sub_if_data
*sdata
,
4373 struct cfg80211_auth_request
*req
)
4375 struct ieee80211_local
*local
= sdata
->local
;
4376 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4377 struct ieee80211_mgd_auth_data
*auth_data
;
4381 /* prepare auth data structure */
4383 switch (req
->auth_type
) {
4384 case NL80211_AUTHTYPE_OPEN_SYSTEM
:
4385 auth_alg
= WLAN_AUTH_OPEN
;
4387 case NL80211_AUTHTYPE_SHARED_KEY
:
4388 if (IS_ERR(local
->wep_tx_tfm
))
4390 auth_alg
= WLAN_AUTH_SHARED_KEY
;
4392 case NL80211_AUTHTYPE_FT
:
4393 auth_alg
= WLAN_AUTH_FT
;
4395 case NL80211_AUTHTYPE_NETWORK_EAP
:
4396 auth_alg
= WLAN_AUTH_LEAP
;
4398 case NL80211_AUTHTYPE_SAE
:
4399 auth_alg
= WLAN_AUTH_SAE
;
4405 auth_data
= kzalloc(sizeof(*auth_data
) + req
->sae_data_len
+
4406 req
->ie_len
, GFP_KERNEL
);
4410 auth_data
->bss
= req
->bss
;
4412 if (req
->sae_data_len
>= 4) {
4413 __le16
*pos
= (__le16
*) req
->sae_data
;
4414 auth_data
->sae_trans
= le16_to_cpu(pos
[0]);
4415 auth_data
->sae_status
= le16_to_cpu(pos
[1]);
4416 memcpy(auth_data
->data
, req
->sae_data
+ 4,
4417 req
->sae_data_len
- 4);
4418 auth_data
->data_len
+= req
->sae_data_len
- 4;
4421 if (req
->ie
&& req
->ie_len
) {
4422 memcpy(&auth_data
->data
[auth_data
->data_len
],
4423 req
->ie
, req
->ie_len
);
4424 auth_data
->data_len
+= req
->ie_len
;
4427 if (req
->key
&& req
->key_len
) {
4428 auth_data
->key_len
= req
->key_len
;
4429 auth_data
->key_idx
= req
->key_idx
;
4430 memcpy(auth_data
->key
, req
->key
, req
->key_len
);
4433 auth_data
->algorithm
= auth_alg
;
4435 /* try to authenticate/probe */
4437 if ((ifmgd
->auth_data
&& !ifmgd
->auth_data
->done
) ||
4438 ifmgd
->assoc_data
) {
4443 if (ifmgd
->auth_data
)
4444 ieee80211_destroy_auth_data(sdata
, false);
4446 /* prep auth_data so we don't go into idle on disassoc */
4447 ifmgd
->auth_data
= auth_data
;
4449 if (ifmgd
->associated
) {
4450 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
4452 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
,
4453 WLAN_REASON_UNSPECIFIED
,
4456 cfg80211_tx_mlme_mgmt(sdata
->dev
, frame_buf
,
4460 sdata_info(sdata
, "authenticate with %pM\n", req
->bss
->bssid
);
4462 err
= ieee80211_prep_connection(sdata
, req
->bss
, false);
4466 err
= ieee80211_probe_auth(sdata
);
4468 sta_info_destroy_addr(sdata
, req
->bss
->bssid
);
4472 /* hold our own reference */
4473 cfg80211_ref_bss(local
->hw
.wiphy
, auth_data
->bss
);
4477 memset(ifmgd
->bssid
, 0, ETH_ALEN
);
4478 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BSSID
);
4479 ifmgd
->auth_data
= NULL
;
4485 static bool ieee80211_usable_wmm_params(struct ieee80211_sub_if_data
*sdata
,
4486 const u8
*wmm_param
, int len
)
4494 if (wmm_param
[5] != 1 /* version */)
4497 pos
= wmm_param
+ 8;
4500 for (; left
>= 4; left
-= 4, pos
+= 4) {
4501 u8 aifsn
= pos
[0] & 0x0f;
4502 u8 ecwmin
= pos
[1] & 0x0f;
4503 u8 ecwmax
= (pos
[1] & 0xf0) >> 4;
4504 int aci
= (pos
[0] >> 5) & 0x03;
4508 "AP has invalid WMM params (AIFSN=%d for ACI %d), disabling WMM\n",
4512 if (ecwmin
> ecwmax
) {
4514 "AP has invalid WMM params (ECWmin/max=%d/%d for ACI %d), disabling WMM\n",
4515 ecwmin
, ecwmax
, aci
);
4523 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data
*sdata
,
4524 struct cfg80211_assoc_request
*req
)
4526 struct ieee80211_local
*local
= sdata
->local
;
4527 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4528 struct ieee80211_bss
*bss
= (void *)req
->bss
->priv
;
4529 struct ieee80211_mgd_assoc_data
*assoc_data
;
4530 const struct cfg80211_bss_ies
*beacon_ies
;
4531 struct ieee80211_supported_band
*sband
;
4532 const u8
*ssidie
, *ht_ie
, *vht_ie
;
4535 assoc_data
= kzalloc(sizeof(*assoc_data
) + req
->ie_len
, GFP_KERNEL
);
4540 ssidie
= ieee80211_bss_get_ie(req
->bss
, WLAN_EID_SSID
);
4546 memcpy(assoc_data
->ssid
, ssidie
+ 2, ssidie
[1]);
4547 assoc_data
->ssid_len
= ssidie
[1];
4550 if (ifmgd
->associated
) {
4551 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
4553 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
,
4554 WLAN_REASON_UNSPECIFIED
,
4557 cfg80211_tx_mlme_mgmt(sdata
->dev
, frame_buf
,
4561 if (ifmgd
->auth_data
&& !ifmgd
->auth_data
->done
) {
4566 if (ifmgd
->assoc_data
) {
4571 if (ifmgd
->auth_data
) {
4574 /* keep sta info, bssid if matching */
4575 match
= ether_addr_equal(ifmgd
->bssid
, req
->bss
->bssid
);
4576 ieee80211_destroy_auth_data(sdata
, match
);
4579 /* prepare assoc data */
4581 ifmgd
->beacon_crc_valid
= false;
4583 assoc_data
->wmm
= bss
->wmm_used
&&
4584 (local
->hw
.queues
>= IEEE80211_NUM_ACS
);
4585 if (assoc_data
->wmm
) {
4586 /* try to check validity of WMM params IE */
4587 const struct cfg80211_bss_ies
*ies
;
4588 const u8
*wp
, *start
, *end
;
4591 ies
= rcu_dereference(req
->bss
->ies
);
4593 end
= start
+ ies
->len
;
4596 wp
= cfg80211_find_vendor_ie(
4598 WLAN_OUI_TYPE_MICROSOFT_WMM
,
4599 start
, end
- start
);
4602 start
= wp
+ wp
[1] + 2;
4603 /* if this IE is too short, try the next */
4606 /* if this IE is WMM params, we found what we wanted */
4611 if (!wp
|| !ieee80211_usable_wmm_params(sdata
, wp
+ 2,
4613 assoc_data
->wmm
= false;
4614 ifmgd
->flags
|= IEEE80211_STA_DISABLE_WMM
;
4620 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
4621 * We still associate in non-HT mode (11a/b/g) if any one of these
4622 * ciphers is configured as pairwise.
4623 * We can set this to true for non-11n hardware, that'll be checked
4624 * separately along with the peer capabilities.
4626 for (i
= 0; i
< req
->crypto
.n_ciphers_pairwise
; i
++) {
4627 if (req
->crypto
.ciphers_pairwise
[i
] == WLAN_CIPHER_SUITE_WEP40
||
4628 req
->crypto
.ciphers_pairwise
[i
] == WLAN_CIPHER_SUITE_TKIP
||
4629 req
->crypto
.ciphers_pairwise
[i
] == WLAN_CIPHER_SUITE_WEP104
) {
4630 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
4631 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4632 netdev_info(sdata
->dev
,
4633 "disabling HT/VHT due to WEP/TKIP use\n");
4637 if (req
->flags
& ASSOC_REQ_DISABLE_HT
) {
4638 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
4639 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4642 if (req
->flags
& ASSOC_REQ_DISABLE_VHT
)
4643 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4645 /* Also disable HT if we don't support it or the AP doesn't use WMM */
4646 sband
= local
->hw
.wiphy
->bands
[req
->bss
->channel
->band
];
4647 if (!sband
->ht_cap
.ht_supported
||
4648 local
->hw
.queues
< IEEE80211_NUM_ACS
|| !bss
->wmm_used
||
4649 ifmgd
->flags
& IEEE80211_STA_DISABLE_WMM
) {
4650 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
4651 if (!bss
->wmm_used
&&
4652 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_WMM
))
4653 netdev_info(sdata
->dev
,
4654 "disabling HT as WMM/QoS is not supported by the AP\n");
4657 /* disable VHT if we don't support it or the AP doesn't use WMM */
4658 if (!sband
->vht_cap
.vht_supported
||
4659 local
->hw
.queues
< IEEE80211_NUM_ACS
|| !bss
->wmm_used
||
4660 ifmgd
->flags
& IEEE80211_STA_DISABLE_WMM
) {
4661 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4662 if (!bss
->wmm_used
&&
4663 !(ifmgd
->flags
& IEEE80211_STA_DISABLE_WMM
))
4664 netdev_info(sdata
->dev
,
4665 "disabling VHT as WMM/QoS is not supported by the AP\n");
4668 memcpy(&ifmgd
->ht_capa
, &req
->ht_capa
, sizeof(ifmgd
->ht_capa
));
4669 memcpy(&ifmgd
->ht_capa_mask
, &req
->ht_capa_mask
,
4670 sizeof(ifmgd
->ht_capa_mask
));
4672 memcpy(&ifmgd
->vht_capa
, &req
->vht_capa
, sizeof(ifmgd
->vht_capa
));
4673 memcpy(&ifmgd
->vht_capa_mask
, &req
->vht_capa_mask
,
4674 sizeof(ifmgd
->vht_capa_mask
));
4676 if (req
->ie
&& req
->ie_len
) {
4677 memcpy(assoc_data
->ie
, req
->ie
, req
->ie_len
);
4678 assoc_data
->ie_len
= req
->ie_len
;
4681 assoc_data
->bss
= req
->bss
;
4683 if (ifmgd
->req_smps
== IEEE80211_SMPS_AUTOMATIC
) {
4684 if (ifmgd
->powersave
)
4685 sdata
->smps_mode
= IEEE80211_SMPS_DYNAMIC
;
4687 sdata
->smps_mode
= IEEE80211_SMPS_OFF
;
4689 sdata
->smps_mode
= ifmgd
->req_smps
;
4691 assoc_data
->capability
= req
->bss
->capability
;
4692 assoc_data
->supp_rates
= bss
->supp_rates
;
4693 assoc_data
->supp_rates_len
= bss
->supp_rates_len
;
4696 ht_ie
= ieee80211_bss_get_ie(req
->bss
, WLAN_EID_HT_OPERATION
);
4697 if (ht_ie
&& ht_ie
[1] >= sizeof(struct ieee80211_ht_operation
))
4698 assoc_data
->ap_ht_param
=
4699 ((struct ieee80211_ht_operation
*)(ht_ie
+ 2))->ht_param
;
4701 ifmgd
->flags
|= IEEE80211_STA_DISABLE_HT
;
4702 vht_ie
= ieee80211_bss_get_ie(req
->bss
, WLAN_EID_VHT_CAPABILITY
);
4703 if (vht_ie
&& vht_ie
[1] >= sizeof(struct ieee80211_vht_cap
))
4704 memcpy(&assoc_data
->ap_vht_cap
, vht_ie
+ 2,
4705 sizeof(struct ieee80211_vht_cap
));
4707 ifmgd
->flags
|= IEEE80211_STA_DISABLE_VHT
;
4710 if (WARN((sdata
->vif
.driver_flags
& IEEE80211_VIF_SUPPORTS_UAPSD
) &&
4711 (local
->hw
.flags
& IEEE80211_HW_PS_NULLFUNC_STACK
),
4712 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"))
4713 sdata
->vif
.driver_flags
&= ~IEEE80211_VIF_SUPPORTS_UAPSD
;
4715 if (bss
->wmm_used
&& bss
->uapsd_supported
&&
4716 (sdata
->vif
.driver_flags
& IEEE80211_VIF_SUPPORTS_UAPSD
)) {
4717 assoc_data
->uapsd
= true;
4718 ifmgd
->flags
|= IEEE80211_STA_UAPSD_ENABLED
;
4720 assoc_data
->uapsd
= false;
4721 ifmgd
->flags
&= ~IEEE80211_STA_UAPSD_ENABLED
;
4724 if (req
->prev_bssid
)
4725 memcpy(assoc_data
->prev_bssid
, req
->prev_bssid
, ETH_ALEN
);
4728 ifmgd
->mfp
= IEEE80211_MFP_REQUIRED
;
4729 ifmgd
->flags
|= IEEE80211_STA_MFP_ENABLED
;
4731 ifmgd
->mfp
= IEEE80211_MFP_DISABLED
;
4732 ifmgd
->flags
&= ~IEEE80211_STA_MFP_ENABLED
;
4735 if (req
->flags
& ASSOC_REQ_USE_RRM
)
4736 ifmgd
->flags
|= IEEE80211_STA_ENABLE_RRM
;
4738 ifmgd
->flags
&= ~IEEE80211_STA_ENABLE_RRM
;
4740 if (req
->crypto
.control_port
)
4741 ifmgd
->flags
|= IEEE80211_STA_CONTROL_PORT
;
4743 ifmgd
->flags
&= ~IEEE80211_STA_CONTROL_PORT
;
4745 sdata
->control_port_protocol
= req
->crypto
.control_port_ethertype
;
4746 sdata
->control_port_no_encrypt
= req
->crypto
.control_port_no_encrypt
;
4747 sdata
->encrypt_headroom
= ieee80211_cs_headroom(local
, &req
->crypto
,
4750 /* kick off associate process */
4752 ifmgd
->assoc_data
= assoc_data
;
4753 ifmgd
->dtim_period
= 0;
4754 ifmgd
->have_beacon
= false;
4756 err
= ieee80211_prep_connection(sdata
, req
->bss
, true);
4761 beacon_ies
= rcu_dereference(req
->bss
->beacon_ies
);
4763 if (sdata
->local
->hw
.flags
& IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC
&&
4766 * Wait up to one beacon interval ...
4767 * should this be more if we miss one?
4769 sdata_info(sdata
, "waiting for beacon from %pM\n",
4771 assoc_data
->timeout
= TU_TO_EXP_TIME(req
->bss
->beacon_interval
);
4772 assoc_data
->timeout_started
= true;
4773 assoc_data
->need_beacon
= true;
4774 } else if (beacon_ies
) {
4775 const u8
*tim_ie
= cfg80211_find_ie(WLAN_EID_TIM
,
4780 if (tim_ie
&& tim_ie
[1] >= sizeof(struct ieee80211_tim_ie
)) {
4781 const struct ieee80211_tim_ie
*tim
;
4782 tim
= (void *)(tim_ie
+ 2);
4783 ifmgd
->dtim_period
= tim
->dtim_period
;
4784 dtim_count
= tim
->dtim_count
;
4786 ifmgd
->have_beacon
= true;
4787 assoc_data
->timeout
= jiffies
;
4788 assoc_data
->timeout_started
= true;
4790 if (local
->hw
.flags
& IEEE80211_HW_TIMING_BEACON_ONLY
) {
4791 sdata
->vif
.bss_conf
.sync_tsf
= beacon_ies
->tsf
;
4792 sdata
->vif
.bss_conf
.sync_device_ts
=
4793 bss
->device_ts_beacon
;
4794 sdata
->vif
.bss_conf
.sync_dtim_count
= dtim_count
;
4797 assoc_data
->timeout
= jiffies
;
4798 assoc_data
->timeout_started
= true;
4802 run_again(sdata
, assoc_data
->timeout
);
4804 if (bss
->corrupt_data
) {
4805 char *corrupt_type
= "data";
4806 if (bss
->corrupt_data
& IEEE80211_BSS_CORRUPT_BEACON
) {
4807 if (bss
->corrupt_data
&
4808 IEEE80211_BSS_CORRUPT_PROBE_RESP
)
4809 corrupt_type
= "beacon and probe response";
4811 corrupt_type
= "beacon";
4812 } else if (bss
->corrupt_data
& IEEE80211_BSS_CORRUPT_PROBE_RESP
)
4813 corrupt_type
= "probe response";
4814 sdata_info(sdata
, "associating with AP with corrupt %s\n",
4820 memset(ifmgd
->bssid
, 0, ETH_ALEN
);
4821 ieee80211_bss_info_change_notify(sdata
, BSS_CHANGED_BSSID
);
4822 ifmgd
->assoc_data
= NULL
;
4828 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data
*sdata
,
4829 struct cfg80211_deauth_request
*req
)
4831 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4832 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
4833 bool tx
= !req
->local_state_change
;
4835 if (ifmgd
->auth_data
&&
4836 ether_addr_equal(ifmgd
->auth_data
->bss
->bssid
, req
->bssid
)) {
4838 "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
4839 req
->bssid
, req
->reason_code
,
4840 ieee80211_get_reason_code_string(req
->reason_code
));
4842 drv_mgd_prepare_tx(sdata
->local
, sdata
);
4843 ieee80211_send_deauth_disassoc(sdata
, req
->bssid
,
4844 IEEE80211_STYPE_DEAUTH
,
4845 req
->reason_code
, tx
,
4847 ieee80211_destroy_auth_data(sdata
, false);
4848 cfg80211_tx_mlme_mgmt(sdata
->dev
, frame_buf
,
4849 IEEE80211_DEAUTH_FRAME_LEN
);
4854 if (ifmgd
->associated
&&
4855 ether_addr_equal(ifmgd
->associated
->bssid
, req
->bssid
)) {
4857 "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
4858 req
->bssid
, req
->reason_code
,
4859 ieee80211_get_reason_code_string(req
->reason_code
));
4861 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DEAUTH
,
4862 req
->reason_code
, tx
, frame_buf
);
4863 cfg80211_tx_mlme_mgmt(sdata
->dev
, frame_buf
,
4864 IEEE80211_DEAUTH_FRAME_LEN
);
4871 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data
*sdata
,
4872 struct cfg80211_disassoc_request
*req
)
4874 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4876 u8 frame_buf
[IEEE80211_DEAUTH_FRAME_LEN
];
4879 * cfg80211 should catch this ... but it's racy since
4880 * we can receive a disassoc frame, process it, hand it
4881 * to cfg80211 while that's in a locked section already
4882 * trying to tell us that the user wants to disconnect.
4884 if (ifmgd
->associated
!= req
->bss
)
4888 "disassociating from %pM by local choice (Reason: %u=%s)\n",
4889 req
->bss
->bssid
, req
->reason_code
, ieee80211_get_reason_code_string(req
->reason_code
));
4891 memcpy(bssid
, req
->bss
->bssid
, ETH_ALEN
);
4892 ieee80211_set_disassoc(sdata
, IEEE80211_STYPE_DISASSOC
,
4893 req
->reason_code
, !req
->local_state_change
,
4896 cfg80211_tx_mlme_mgmt(sdata
->dev
, frame_buf
,
4897 IEEE80211_DEAUTH_FRAME_LEN
);
4902 void ieee80211_mgd_stop(struct ieee80211_sub_if_data
*sdata
)
4904 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
4907 * Make sure some work items will not run after this,
4908 * they will not do anything but might not have been
4909 * cancelled when disconnecting.
4911 cancel_work_sync(&ifmgd
->monitor_work
);
4912 cancel_work_sync(&ifmgd
->beacon_connection_loss_work
);
4913 cancel_work_sync(&ifmgd
->request_smps_work
);
4914 cancel_work_sync(&ifmgd
->csa_connection_drop_work
);
4915 cancel_work_sync(&ifmgd
->chswitch_work
);
4916 cancel_delayed_work_sync(&ifmgd
->tdls_peer_del_work
);
4919 if (ifmgd
->assoc_data
) {
4920 struct cfg80211_bss
*bss
= ifmgd
->assoc_data
->bss
;
4921 ieee80211_destroy_assoc_data(sdata
, false);
4922 cfg80211_assoc_timeout(sdata
->dev
, bss
);
4924 if (ifmgd
->auth_data
)
4925 ieee80211_destroy_auth_data(sdata
, false);
4926 spin_lock_bh(&ifmgd
->teardown_lock
);
4927 if (ifmgd
->teardown_skb
) {
4928 kfree_skb(ifmgd
->teardown_skb
);
4929 ifmgd
->teardown_skb
= NULL
;
4930 ifmgd
->orig_teardown_skb
= NULL
;
4932 spin_unlock_bh(&ifmgd
->teardown_lock
);
4933 del_timer_sync(&ifmgd
->timer
);
4934 sdata_unlock(sdata
);
4937 void ieee80211_cqm_rssi_notify(struct ieee80211_vif
*vif
,
4938 enum nl80211_cqm_rssi_threshold_event rssi_event
,
4941 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
4943 trace_api_cqm_rssi_notify(sdata
, rssi_event
);
4945 cfg80211_cqm_rssi_notify(sdata
->dev
, rssi_event
, gfp
);
4947 EXPORT_SYMBOL(ieee80211_cqm_rssi_notify
);
4949 void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif
*vif
, gfp_t gfp
)
4951 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
4953 trace_api_cqm_beacon_loss_notify(sdata
->local
, sdata
);
4955 cfg80211_cqm_beacon_loss_notify(sdata
->dev
, gfp
);
4957 EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify
);