2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 * utilities for mac80211
14 #include <net/mac80211.h>
15 #include <linux/netdevice.h>
16 #include <linux/export.h>
17 #include <linux/types.h>
18 #include <linux/slab.h>
19 #include <linux/skbuff.h>
20 #include <linux/etherdevice.h>
21 #include <linux/if_arp.h>
22 #include <linux/bitmap.h>
23 #include <linux/crc32.h>
24 #include <net/net_namespace.h>
25 #include <net/cfg80211.h>
26 #include <net/rtnetlink.h>
28 #include "ieee80211_i.h"
29 #include "driver-ops.h"
36 /* privid for wiphys to determine whether they belong to us or not */
37 void *mac80211_wiphy_privid
= &mac80211_wiphy_privid
;
39 struct ieee80211_hw
*wiphy_to_ieee80211_hw(struct wiphy
*wiphy
)
41 struct ieee80211_local
*local
;
44 local
= wiphy_priv(wiphy
);
47 EXPORT_SYMBOL(wiphy_to_ieee80211_hw
);
49 u8
*ieee80211_get_bssid(struct ieee80211_hdr
*hdr
, size_t len
,
50 enum nl80211_iftype type
)
52 __le16 fc
= hdr
->frame_control
;
54 /* drop ACK/CTS frames and incorrect hdr len (ctrl) */
58 if (ieee80211_is_data(fc
)) {
59 if (len
< 24) /* drop incorrect hdr len (data) */
62 if (ieee80211_has_a4(fc
))
64 if (ieee80211_has_tods(fc
))
66 if (ieee80211_has_fromds(fc
))
72 if (ieee80211_is_mgmt(fc
)) {
73 if (len
< 24) /* drop incorrect hdr len (mgmt) */
78 if (ieee80211_is_ctl(fc
)) {
79 if(ieee80211_is_pspoll(fc
))
82 if (ieee80211_is_back_req(fc
)) {
84 case NL80211_IFTYPE_STATION
:
86 case NL80211_IFTYPE_AP
:
87 case NL80211_IFTYPE_AP_VLAN
:
90 break; /* fall through to the return */
98 void ieee80211_tx_set_protected(struct ieee80211_tx_data
*tx
)
101 struct ieee80211_hdr
*hdr
;
103 skb_queue_walk(&tx
->skbs
, skb
) {
104 hdr
= (struct ieee80211_hdr
*) skb
->data
;
105 hdr
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
109 int ieee80211_frame_duration(enum ieee80211_band band
, size_t len
,
110 int rate
, int erp
, int short_preamble
)
114 /* calculate duration (in microseconds, rounded up to next higher
115 * integer if it includes a fractional microsecond) to send frame of
116 * len bytes (does not include FCS) at the given rate. Duration will
119 * rate is in 100 kbps, so divident is multiplied by 10 in the
120 * DIV_ROUND_UP() operations.
123 if (band
== IEEE80211_BAND_5GHZ
|| erp
) {
127 * N_DBPS = DATARATE x 4
128 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
129 * (16 = SIGNAL time, 6 = tail bits)
130 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
133 * 802.11a - 17.5.2: aSIFSTime = 16 usec
134 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
135 * signal ext = 6 usec
137 dur
= 16; /* SIFS + signal ext */
138 dur
+= 16; /* 17.3.2.3: T_PREAMBLE = 16 usec */
139 dur
+= 4; /* 17.3.2.3: T_SIGNAL = 4 usec */
140 dur
+= 4 * DIV_ROUND_UP((16 + 8 * (len
+ 4) + 6) * 10,
141 4 * rate
); /* T_SYM x N_SYM */
144 * 802.11b or 802.11g with 802.11b compatibility:
145 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
146 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
148 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
149 * aSIFSTime = 10 usec
150 * aPreambleLength = 144 usec or 72 usec with short preamble
151 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
153 dur
= 10; /* aSIFSTime = 10 usec */
154 dur
+= short_preamble
? (72 + 24) : (144 + 48);
156 dur
+= DIV_ROUND_UP(8 * (len
+ 4) * 10, rate
);
162 /* Exported duration function for driver use */
163 __le16
ieee80211_generic_frame_duration(struct ieee80211_hw
*hw
,
164 struct ieee80211_vif
*vif
,
165 enum ieee80211_band band
,
167 struct ieee80211_rate
*rate
)
169 struct ieee80211_sub_if_data
*sdata
;
172 bool short_preamble
= false;
176 sdata
= vif_to_sdata(vif
);
177 short_preamble
= sdata
->vif
.bss_conf
.use_short_preamble
;
178 if (sdata
->flags
& IEEE80211_SDATA_OPERATING_GMODE
)
179 erp
= rate
->flags
& IEEE80211_RATE_ERP_G
;
182 dur
= ieee80211_frame_duration(band
, frame_len
, rate
->bitrate
, erp
,
185 return cpu_to_le16(dur
);
187 EXPORT_SYMBOL(ieee80211_generic_frame_duration
);
189 __le16
ieee80211_rts_duration(struct ieee80211_hw
*hw
,
190 struct ieee80211_vif
*vif
, size_t frame_len
,
191 const struct ieee80211_tx_info
*frame_txctl
)
193 struct ieee80211_local
*local
= hw_to_local(hw
);
194 struct ieee80211_rate
*rate
;
195 struct ieee80211_sub_if_data
*sdata
;
199 struct ieee80211_supported_band
*sband
;
201 sband
= local
->hw
.wiphy
->bands
[frame_txctl
->band
];
203 short_preamble
= false;
205 rate
= &sband
->bitrates
[frame_txctl
->control
.rts_cts_rate_idx
];
209 sdata
= vif_to_sdata(vif
);
210 short_preamble
= sdata
->vif
.bss_conf
.use_short_preamble
;
211 if (sdata
->flags
& IEEE80211_SDATA_OPERATING_GMODE
)
212 erp
= rate
->flags
& IEEE80211_RATE_ERP_G
;
216 dur
= ieee80211_frame_duration(sband
->band
, 10, rate
->bitrate
,
217 erp
, short_preamble
);
218 /* Data frame duration */
219 dur
+= ieee80211_frame_duration(sband
->band
, frame_len
, rate
->bitrate
,
220 erp
, short_preamble
);
222 dur
+= ieee80211_frame_duration(sband
->band
, 10, rate
->bitrate
,
223 erp
, short_preamble
);
225 return cpu_to_le16(dur
);
227 EXPORT_SYMBOL(ieee80211_rts_duration
);
229 __le16
ieee80211_ctstoself_duration(struct ieee80211_hw
*hw
,
230 struct ieee80211_vif
*vif
,
232 const struct ieee80211_tx_info
*frame_txctl
)
234 struct ieee80211_local
*local
= hw_to_local(hw
);
235 struct ieee80211_rate
*rate
;
236 struct ieee80211_sub_if_data
*sdata
;
240 struct ieee80211_supported_band
*sband
;
242 sband
= local
->hw
.wiphy
->bands
[frame_txctl
->band
];
244 short_preamble
= false;
246 rate
= &sband
->bitrates
[frame_txctl
->control
.rts_cts_rate_idx
];
249 sdata
= vif_to_sdata(vif
);
250 short_preamble
= sdata
->vif
.bss_conf
.use_short_preamble
;
251 if (sdata
->flags
& IEEE80211_SDATA_OPERATING_GMODE
)
252 erp
= rate
->flags
& IEEE80211_RATE_ERP_G
;
255 /* Data frame duration */
256 dur
= ieee80211_frame_duration(sband
->band
, frame_len
, rate
->bitrate
,
257 erp
, short_preamble
);
258 if (!(frame_txctl
->flags
& IEEE80211_TX_CTL_NO_ACK
)) {
260 dur
+= ieee80211_frame_duration(sband
->band
, 10, rate
->bitrate
,
261 erp
, short_preamble
);
264 return cpu_to_le16(dur
);
266 EXPORT_SYMBOL(ieee80211_ctstoself_duration
);
268 void ieee80211_propagate_queue_wake(struct ieee80211_local
*local
, int queue
)
270 struct ieee80211_sub_if_data
*sdata
;
271 int n_acs
= IEEE80211_NUM_ACS
;
273 if (local
->hw
.queues
< IEEE80211_NUM_ACS
)
276 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
282 if (test_bit(SDATA_STATE_OFFCHANNEL
, &sdata
->state
))
285 if (sdata
->vif
.cab_queue
!= IEEE80211_INVAL_HW_QUEUE
&&
286 local
->queue_stop_reasons
[sdata
->vif
.cab_queue
] != 0)
289 for (ac
= 0; ac
< n_acs
; ac
++) {
290 int ac_queue
= sdata
->vif
.hw_queue
[ac
];
292 if (ac_queue
== queue
||
293 (sdata
->vif
.cab_queue
== queue
&&
294 local
->queue_stop_reasons
[ac_queue
] == 0 &&
295 skb_queue_empty(&local
->pending
[ac_queue
])))
296 netif_wake_subqueue(sdata
->dev
, ac
);
301 static void __ieee80211_wake_queue(struct ieee80211_hw
*hw
, int queue
,
302 enum queue_stop_reason reason
)
304 struct ieee80211_local
*local
= hw_to_local(hw
);
306 trace_wake_queue(local
, queue
, reason
);
308 if (WARN_ON(queue
>= hw
->queues
))
311 if (!test_bit(reason
, &local
->queue_stop_reasons
[queue
]))
314 __clear_bit(reason
, &local
->queue_stop_reasons
[queue
]);
316 if (local
->queue_stop_reasons
[queue
] != 0)
317 /* someone still has this queue stopped */
320 if (skb_queue_empty(&local
->pending
[queue
])) {
322 ieee80211_propagate_queue_wake(local
, queue
);
325 tasklet_schedule(&local
->tx_pending_tasklet
);
328 void ieee80211_wake_queue_by_reason(struct ieee80211_hw
*hw
, int queue
,
329 enum queue_stop_reason reason
)
331 struct ieee80211_local
*local
= hw_to_local(hw
);
334 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
335 __ieee80211_wake_queue(hw
, queue
, reason
);
336 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
339 void ieee80211_wake_queue(struct ieee80211_hw
*hw
, int queue
)
341 ieee80211_wake_queue_by_reason(hw
, queue
,
342 IEEE80211_QUEUE_STOP_REASON_DRIVER
);
344 EXPORT_SYMBOL(ieee80211_wake_queue
);
346 static void __ieee80211_stop_queue(struct ieee80211_hw
*hw
, int queue
,
347 enum queue_stop_reason reason
)
349 struct ieee80211_local
*local
= hw_to_local(hw
);
350 struct ieee80211_sub_if_data
*sdata
;
351 int n_acs
= IEEE80211_NUM_ACS
;
353 trace_stop_queue(local
, queue
, reason
);
355 if (WARN_ON(queue
>= hw
->queues
))
358 if (test_bit(reason
, &local
->queue_stop_reasons
[queue
]))
361 __set_bit(reason
, &local
->queue_stop_reasons
[queue
]);
363 if (local
->hw
.queues
< IEEE80211_NUM_ACS
)
367 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
373 for (ac
= 0; ac
< n_acs
; ac
++) {
374 if (sdata
->vif
.hw_queue
[ac
] == queue
||
375 sdata
->vif
.cab_queue
== queue
)
376 netif_stop_subqueue(sdata
->dev
, ac
);
382 void ieee80211_stop_queue_by_reason(struct ieee80211_hw
*hw
, int queue
,
383 enum queue_stop_reason reason
)
385 struct ieee80211_local
*local
= hw_to_local(hw
);
388 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
389 __ieee80211_stop_queue(hw
, queue
, reason
);
390 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
393 void ieee80211_stop_queue(struct ieee80211_hw
*hw
, int queue
)
395 ieee80211_stop_queue_by_reason(hw
, queue
,
396 IEEE80211_QUEUE_STOP_REASON_DRIVER
);
398 EXPORT_SYMBOL(ieee80211_stop_queue
);
400 void ieee80211_add_pending_skb(struct ieee80211_local
*local
,
403 struct ieee80211_hw
*hw
= &local
->hw
;
405 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
406 int queue
= info
->hw_queue
;
408 if (WARN_ON(!info
->control
.vif
)) {
409 ieee80211_free_txskb(&local
->hw
, skb
);
413 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
414 __ieee80211_stop_queue(hw
, queue
, IEEE80211_QUEUE_STOP_REASON_SKB_ADD
);
415 __skb_queue_tail(&local
->pending
[queue
], skb
);
416 __ieee80211_wake_queue(hw
, queue
, IEEE80211_QUEUE_STOP_REASON_SKB_ADD
);
417 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
420 void ieee80211_add_pending_skbs_fn(struct ieee80211_local
*local
,
421 struct sk_buff_head
*skbs
,
422 void (*fn
)(void *data
), void *data
)
424 struct ieee80211_hw
*hw
= &local
->hw
;
429 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
430 while ((skb
= skb_dequeue(skbs
))) {
431 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
433 if (WARN_ON(!info
->control
.vif
)) {
434 ieee80211_free_txskb(&local
->hw
, skb
);
438 queue
= info
->hw_queue
;
440 __ieee80211_stop_queue(hw
, queue
,
441 IEEE80211_QUEUE_STOP_REASON_SKB_ADD
);
443 __skb_queue_tail(&local
->pending
[queue
], skb
);
449 for (i
= 0; i
< hw
->queues
; i
++)
450 __ieee80211_wake_queue(hw
, i
,
451 IEEE80211_QUEUE_STOP_REASON_SKB_ADD
);
452 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
455 void ieee80211_stop_queues_by_reason(struct ieee80211_hw
*hw
,
456 enum queue_stop_reason reason
)
458 struct ieee80211_local
*local
= hw_to_local(hw
);
462 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
464 for (i
= 0; i
< hw
->queues
; i
++)
465 __ieee80211_stop_queue(hw
, i
, reason
);
467 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
470 void ieee80211_stop_queues(struct ieee80211_hw
*hw
)
472 ieee80211_stop_queues_by_reason(hw
,
473 IEEE80211_QUEUE_STOP_REASON_DRIVER
);
475 EXPORT_SYMBOL(ieee80211_stop_queues
);
477 int ieee80211_queue_stopped(struct ieee80211_hw
*hw
, int queue
)
479 struct ieee80211_local
*local
= hw_to_local(hw
);
483 if (WARN_ON(queue
>= hw
->queues
))
486 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
487 ret
= !!local
->queue_stop_reasons
[queue
];
488 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
491 EXPORT_SYMBOL(ieee80211_queue_stopped
);
493 void ieee80211_wake_queues_by_reason(struct ieee80211_hw
*hw
,
494 enum queue_stop_reason reason
)
496 struct ieee80211_local
*local
= hw_to_local(hw
);
500 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
502 for (i
= 0; i
< hw
->queues
; i
++)
503 __ieee80211_wake_queue(hw
, i
, reason
);
505 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
508 void ieee80211_wake_queues(struct ieee80211_hw
*hw
)
510 ieee80211_wake_queues_by_reason(hw
, IEEE80211_QUEUE_STOP_REASON_DRIVER
);
512 EXPORT_SYMBOL(ieee80211_wake_queues
);
514 void ieee80211_iterate_active_interfaces(
515 struct ieee80211_hw
*hw
, u32 iter_flags
,
516 void (*iterator
)(void *data
, u8
*mac
,
517 struct ieee80211_vif
*vif
),
520 struct ieee80211_local
*local
= hw_to_local(hw
);
521 struct ieee80211_sub_if_data
*sdata
;
523 mutex_lock(&local
->iflist_mtx
);
525 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
526 switch (sdata
->vif
.type
) {
527 case NL80211_IFTYPE_MONITOR
:
528 case NL80211_IFTYPE_AP_VLAN
:
533 if (!(iter_flags
& IEEE80211_IFACE_ITER_RESUME_ALL
) &&
534 !(sdata
->flags
& IEEE80211_SDATA_IN_DRIVER
))
536 if (ieee80211_sdata_running(sdata
))
537 iterator(data
, sdata
->vif
.addr
,
541 sdata
= rcu_dereference_protected(local
->monitor_sdata
,
542 lockdep_is_held(&local
->iflist_mtx
));
544 (iter_flags
& IEEE80211_IFACE_ITER_RESUME_ALL
||
545 sdata
->flags
& IEEE80211_SDATA_IN_DRIVER
))
546 iterator(data
, sdata
->vif
.addr
, &sdata
->vif
);
548 mutex_unlock(&local
->iflist_mtx
);
550 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces
);
552 void ieee80211_iterate_active_interfaces_atomic(
553 struct ieee80211_hw
*hw
, u32 iter_flags
,
554 void (*iterator
)(void *data
, u8
*mac
,
555 struct ieee80211_vif
*vif
),
558 struct ieee80211_local
*local
= hw_to_local(hw
);
559 struct ieee80211_sub_if_data
*sdata
;
563 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
564 switch (sdata
->vif
.type
) {
565 case NL80211_IFTYPE_MONITOR
:
566 case NL80211_IFTYPE_AP_VLAN
:
571 if (!(iter_flags
& IEEE80211_IFACE_ITER_RESUME_ALL
) &&
572 !(sdata
->flags
& IEEE80211_SDATA_IN_DRIVER
))
574 if (ieee80211_sdata_running(sdata
))
575 iterator(data
, sdata
->vif
.addr
,
579 sdata
= rcu_dereference(local
->monitor_sdata
);
581 (iter_flags
& IEEE80211_IFACE_ITER_RESUME_ALL
||
582 sdata
->flags
& IEEE80211_SDATA_IN_DRIVER
))
583 iterator(data
, sdata
->vif
.addr
, &sdata
->vif
);
587 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic
);
590 * Nothing should have been stuffed into the workqueue during
591 * the suspend->resume cycle. If this WARN is seen then there
592 * is a bug with either the driver suspend or something in
593 * mac80211 stuffing into the workqueue which we haven't yet
594 * cleared during mac80211's suspend cycle.
596 static bool ieee80211_can_queue_work(struct ieee80211_local
*local
)
598 if (WARN(local
->suspended
&& !local
->resuming
,
599 "queueing ieee80211 work while going to suspend\n"))
605 void ieee80211_queue_work(struct ieee80211_hw
*hw
, struct work_struct
*work
)
607 struct ieee80211_local
*local
= hw_to_local(hw
);
609 if (!ieee80211_can_queue_work(local
))
612 queue_work(local
->workqueue
, work
);
614 EXPORT_SYMBOL(ieee80211_queue_work
);
616 void ieee80211_queue_delayed_work(struct ieee80211_hw
*hw
,
617 struct delayed_work
*dwork
,
620 struct ieee80211_local
*local
= hw_to_local(hw
);
622 if (!ieee80211_can_queue_work(local
))
625 queue_delayed_work(local
->workqueue
, dwork
, delay
);
627 EXPORT_SYMBOL(ieee80211_queue_delayed_work
);
629 u32
ieee802_11_parse_elems_crc(u8
*start
, size_t len
,
630 struct ieee802_11_elems
*elems
,
635 bool calc_crc
= filter
!= 0;
636 DECLARE_BITMAP(seen_elems
, 256);
638 bitmap_zero(seen_elems
, 256);
639 memset(elems
, 0, sizeof(*elems
));
640 elems
->ie_start
= start
;
641 elems
->total_len
= len
;
645 bool elem_parse_failed
;
652 elems
->parse_error
= true;
658 case WLAN_EID_SUPP_RATES
:
659 case WLAN_EID_FH_PARAMS
:
660 case WLAN_EID_DS_PARAMS
:
661 case WLAN_EID_CF_PARAMS
:
663 case WLAN_EID_IBSS_PARAMS
:
664 case WLAN_EID_CHALLENGE
:
666 case WLAN_EID_ERP_INFO
:
667 case WLAN_EID_EXT_SUPP_RATES
:
668 case WLAN_EID_HT_CAPABILITY
:
669 case WLAN_EID_HT_OPERATION
:
670 case WLAN_EID_VHT_CAPABILITY
:
671 case WLAN_EID_VHT_OPERATION
:
672 case WLAN_EID_MESH_ID
:
673 case WLAN_EID_MESH_CONFIG
:
674 case WLAN_EID_PEER_MGMT
:
679 case WLAN_EID_CHANNEL_SWITCH
:
680 case WLAN_EID_EXT_CHANSWITCH_ANN
:
681 case WLAN_EID_COUNTRY
:
682 case WLAN_EID_PWR_CONSTRAINT
:
683 case WLAN_EID_TIMEOUT_INTERVAL
:
684 if (test_bit(id
, seen_elems
)) {
685 elems
->parse_error
= true;
693 if (calc_crc
&& id
< 64 && (filter
& (1ULL << id
)))
694 crc
= crc32_be(crc
, pos
- 2, elen
+ 2);
696 elem_parse_failed
= false;
701 elems
->ssid_len
= elen
;
703 case WLAN_EID_SUPP_RATES
:
704 elems
->supp_rates
= pos
;
705 elems
->supp_rates_len
= elen
;
707 case WLAN_EID_FH_PARAMS
:
708 elems
->fh_params
= pos
;
709 elems
->fh_params_len
= elen
;
711 case WLAN_EID_DS_PARAMS
:
712 elems
->ds_params
= pos
;
713 elems
->ds_params_len
= elen
;
715 case WLAN_EID_CF_PARAMS
:
716 elems
->cf_params
= pos
;
717 elems
->cf_params_len
= elen
;
720 if (elen
>= sizeof(struct ieee80211_tim_ie
)) {
721 elems
->tim
= (void *)pos
;
722 elems
->tim_len
= elen
;
724 elem_parse_failed
= true;
726 case WLAN_EID_IBSS_PARAMS
:
727 elems
->ibss_params
= pos
;
728 elems
->ibss_params_len
= elen
;
730 case WLAN_EID_CHALLENGE
:
731 elems
->challenge
= pos
;
732 elems
->challenge_len
= elen
;
734 case WLAN_EID_VENDOR_SPECIFIC
:
735 if (elen
>= 4 && pos
[0] == 0x00 && pos
[1] == 0x50 &&
737 /* Microsoft OUI (00:50:F2) */
740 crc
= crc32_be(crc
, pos
- 2, elen
+ 2);
742 if (elen
>= 5 && pos
[3] == 2) {
743 /* OUI Type 2 - WMM IE */
745 elems
->wmm_info
= pos
;
746 elems
->wmm_info_len
= elen
;
747 } else if (pos
[4] == 1) {
748 elems
->wmm_param
= pos
;
749 elems
->wmm_param_len
= elen
;
756 elems
->rsn_len
= elen
;
758 case WLAN_EID_ERP_INFO
:
759 elems
->erp_info
= pos
;
760 elems
->erp_info_len
= elen
;
762 case WLAN_EID_EXT_SUPP_RATES
:
763 elems
->ext_supp_rates
= pos
;
764 elems
->ext_supp_rates_len
= elen
;
766 case WLAN_EID_HT_CAPABILITY
:
767 if (elen
>= sizeof(struct ieee80211_ht_cap
))
768 elems
->ht_cap_elem
= (void *)pos
;
770 elem_parse_failed
= true;
772 case WLAN_EID_HT_OPERATION
:
773 if (elen
>= sizeof(struct ieee80211_ht_operation
))
774 elems
->ht_operation
= (void *)pos
;
776 elem_parse_failed
= true;
778 case WLAN_EID_VHT_CAPABILITY
:
779 if (elen
>= sizeof(struct ieee80211_vht_cap
))
780 elems
->vht_cap_elem
= (void *)pos
;
782 elem_parse_failed
= true;
784 case WLAN_EID_VHT_OPERATION
:
785 if (elen
>= sizeof(struct ieee80211_vht_operation
))
786 elems
->vht_operation
= (void *)pos
;
788 elem_parse_failed
= true;
790 case WLAN_EID_OPMODE_NOTIF
:
792 elems
->opmode_notif
= pos
;
794 elem_parse_failed
= true;
796 case WLAN_EID_MESH_ID
:
797 elems
->mesh_id
= pos
;
798 elems
->mesh_id_len
= elen
;
800 case WLAN_EID_MESH_CONFIG
:
801 if (elen
>= sizeof(struct ieee80211_meshconf_ie
))
802 elems
->mesh_config
= (void *)pos
;
804 elem_parse_failed
= true;
806 case WLAN_EID_PEER_MGMT
:
807 elems
->peering
= pos
;
808 elems
->peering_len
= elen
;
810 case WLAN_EID_MESH_AWAKE_WINDOW
:
812 elems
->awake_window
= (void *)pos
;
816 elems
->preq_len
= elen
;
820 elems
->prep_len
= elen
;
824 elems
->perr_len
= elen
;
827 if (elen
>= sizeof(struct ieee80211_rann_ie
))
828 elems
->rann
= (void *)pos
;
830 elem_parse_failed
= true;
832 case WLAN_EID_CHANNEL_SWITCH
:
833 if (elen
!= sizeof(struct ieee80211_channel_sw_ie
)) {
834 elem_parse_failed
= true;
837 elems
->ch_switch_ie
= (void *)pos
;
840 if (!elems
->quiet_elem
) {
841 elems
->quiet_elem
= pos
;
842 elems
->quiet_elem_len
= elen
;
844 elems
->num_of_quiet_elem
++;
846 case WLAN_EID_COUNTRY
:
847 elems
->country_elem
= pos
;
848 elems
->country_elem_len
= elen
;
850 case WLAN_EID_PWR_CONSTRAINT
:
852 elem_parse_failed
= true;
855 elems
->pwr_constr_elem
= pos
;
857 case WLAN_EID_TIMEOUT_INTERVAL
:
858 elems
->timeout_int
= pos
;
859 elems
->timeout_int_len
= elen
;
865 if (elem_parse_failed
)
866 elems
->parse_error
= true;
868 __set_bit(id
, seen_elems
);
875 elems
->parse_error
= true;
880 void ieee802_11_parse_elems(u8
*start
, size_t len
,
881 struct ieee802_11_elems
*elems
)
883 ieee802_11_parse_elems_crc(start
, len
, elems
, 0, 0);
886 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data
*sdata
,
889 struct ieee80211_local
*local
= sdata
->local
;
890 struct ieee80211_tx_queue_params qparam
;
891 struct ieee80211_chanctx_conf
*chanctx_conf
;
893 bool use_11b
, enable_qos
;
896 if (!local
->ops
->conf_tx
)
899 if (local
->hw
.queues
< IEEE80211_NUM_ACS
)
902 memset(&qparam
, 0, sizeof(qparam
));
905 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
906 use_11b
= (chanctx_conf
&&
907 chanctx_conf
->def
.chan
->band
== IEEE80211_BAND_2GHZ
) &&
908 !(sdata
->flags
& IEEE80211_SDATA_OPERATING_GMODE
);
912 * By default disable QoS in STA mode for old access points, which do
913 * not support 802.11e. New APs will provide proper queue parameters,
914 * that we will configure later.
916 enable_qos
= (sdata
->vif
.type
!= NL80211_IFTYPE_STATION
);
918 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
919 /* Set defaults according to 802.11-2007 Table 7-37 */
928 case IEEE80211_AC_BK
:
929 qparam
.cw_max
= aCWmax
;
930 qparam
.cw_min
= aCWmin
;
934 /* never happens but let's not leave undefined */
936 case IEEE80211_AC_BE
:
937 qparam
.cw_max
= aCWmax
;
938 qparam
.cw_min
= aCWmin
;
942 case IEEE80211_AC_VI
:
943 qparam
.cw_max
= aCWmin
;
944 qparam
.cw_min
= (aCWmin
+ 1) / 2 - 1;
946 qparam
.txop
= 6016/32;
948 qparam
.txop
= 3008/32;
951 case IEEE80211_AC_VO
:
952 qparam
.cw_max
= (aCWmin
+ 1) / 2 - 1;
953 qparam
.cw_min
= (aCWmin
+ 1) / 4 - 1;
955 qparam
.txop
= 3264/32;
957 qparam
.txop
= 1504/32;
962 /* Confiure old 802.11b/g medium access rules. */
963 qparam
.cw_max
= aCWmax
;
964 qparam
.cw_min
= aCWmin
;
969 qparam
.uapsd
= false;
971 sdata
->tx_conf
[ac
] = qparam
;
972 drv_conf_tx(local
, sdata
, ac
, &qparam
);
975 if (sdata
->vif
.type
!= NL80211_IFTYPE_MONITOR
&&
976 sdata
->vif
.type
!= NL80211_IFTYPE_P2P_DEVICE
) {
977 sdata
->vif
.bss_conf
.qos
= enable_qos
;
979 ieee80211_bss_info_change_notify(sdata
,
984 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data
*sdata
,
985 const size_t supp_rates_len
,
986 const u8
*supp_rates
)
988 struct ieee80211_chanctx_conf
*chanctx_conf
;
989 int i
, have_higher_than_11mbit
= 0;
991 /* cf. IEEE 802.11 9.2.12 */
992 for (i
= 0; i
< supp_rates_len
; i
++)
993 if ((supp_rates
[i
] & 0x7f) * 5 > 110)
994 have_higher_than_11mbit
= 1;
997 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
1000 chanctx_conf
->def
.chan
->band
== IEEE80211_BAND_2GHZ
&&
1001 have_higher_than_11mbit
)
1002 sdata
->flags
|= IEEE80211_SDATA_OPERATING_GMODE
;
1004 sdata
->flags
&= ~IEEE80211_SDATA_OPERATING_GMODE
;
1007 ieee80211_set_wmm_default(sdata
, true);
1010 u32
ieee80211_mandatory_rates(struct ieee80211_local
*local
,
1011 enum ieee80211_band band
)
1013 struct ieee80211_supported_band
*sband
;
1014 struct ieee80211_rate
*bitrates
;
1015 u32 mandatory_rates
;
1016 enum ieee80211_rate_flags mandatory_flag
;
1019 sband
= local
->hw
.wiphy
->bands
[band
];
1020 if (WARN_ON(!sband
))
1023 if (band
== IEEE80211_BAND_2GHZ
)
1024 mandatory_flag
= IEEE80211_RATE_MANDATORY_B
;
1026 mandatory_flag
= IEEE80211_RATE_MANDATORY_A
;
1028 bitrates
= sband
->bitrates
;
1029 mandatory_rates
= 0;
1030 for (i
= 0; i
< sband
->n_bitrates
; i
++)
1031 if (bitrates
[i
].flags
& mandatory_flag
)
1032 mandatory_rates
|= BIT(i
);
1033 return mandatory_rates
;
1036 void ieee80211_send_auth(struct ieee80211_sub_if_data
*sdata
,
1037 u16 transaction
, u16 auth_alg
, u16 status
,
1038 const u8
*extra
, size_t extra_len
, const u8
*da
,
1039 const u8
*bssid
, const u8
*key
, u8 key_len
, u8 key_idx
,
1042 struct ieee80211_local
*local
= sdata
->local
;
1043 struct sk_buff
*skb
;
1044 struct ieee80211_mgmt
*mgmt
;
1047 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
1048 sizeof(*mgmt
) + 6 + extra_len
);
1052 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1054 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24 + 6);
1055 memset(mgmt
, 0, 24 + 6);
1056 mgmt
->frame_control
= cpu_to_le16(IEEE80211_FTYPE_MGMT
|
1057 IEEE80211_STYPE_AUTH
);
1058 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1059 memcpy(mgmt
->sa
, sdata
->vif
.addr
, ETH_ALEN
);
1060 memcpy(mgmt
->bssid
, bssid
, ETH_ALEN
);
1061 mgmt
->u
.auth
.auth_alg
= cpu_to_le16(auth_alg
);
1062 mgmt
->u
.auth
.auth_transaction
= cpu_to_le16(transaction
);
1063 mgmt
->u
.auth
.status_code
= cpu_to_le16(status
);
1065 memcpy(skb_put(skb
, extra_len
), extra
, extra_len
);
1067 if (auth_alg
== WLAN_AUTH_SHARED_KEY
&& transaction
== 3) {
1068 mgmt
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
1069 err
= ieee80211_wep_encrypt(local
, skb
, key
, key_len
, key_idx
);
1073 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
|
1075 ieee80211_tx_skb(sdata
, skb
);
1078 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data
*sdata
,
1079 const u8
*bssid
, u16 stype
, u16 reason
,
1080 bool send_frame
, u8
*frame_buf
)
1082 struct ieee80211_local
*local
= sdata
->local
;
1083 struct sk_buff
*skb
;
1084 struct ieee80211_mgmt
*mgmt
= (void *)frame_buf
;
1087 mgmt
->frame_control
= cpu_to_le16(IEEE80211_FTYPE_MGMT
| stype
);
1088 mgmt
->duration
= 0; /* initialize only */
1089 mgmt
->seq_ctrl
= 0; /* initialize only */
1090 memcpy(mgmt
->da
, bssid
, ETH_ALEN
);
1091 memcpy(mgmt
->sa
, sdata
->vif
.addr
, ETH_ALEN
);
1092 memcpy(mgmt
->bssid
, bssid
, ETH_ALEN
);
1093 /* u.deauth.reason_code == u.disassoc.reason_code */
1094 mgmt
->u
.deauth
.reason_code
= cpu_to_le16(reason
);
1097 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
1098 IEEE80211_DEAUTH_FRAME_LEN
);
1102 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1105 memcpy(skb_put(skb
, IEEE80211_DEAUTH_FRAME_LEN
),
1106 mgmt
, IEEE80211_DEAUTH_FRAME_LEN
);
1108 if (sdata
->vif
.type
!= NL80211_IFTYPE_STATION
||
1109 !(sdata
->u
.mgd
.flags
& IEEE80211_STA_MFP_ENABLED
))
1110 IEEE80211_SKB_CB(skb
)->flags
|=
1111 IEEE80211_TX_INTFL_DONT_ENCRYPT
;
1113 ieee80211_tx_skb(sdata
, skb
);
1117 int ieee80211_build_preq_ies(struct ieee80211_local
*local
, u8
*buffer
,
1118 size_t buffer_len
, const u8
*ie
, size_t ie_len
,
1119 enum ieee80211_band band
, u32 rate_mask
,
1122 struct ieee80211_supported_band
*sband
;
1123 u8
*pos
= buffer
, *end
= buffer
+ buffer_len
;
1124 size_t offset
= 0, noffset
;
1125 int supp_rates_len
, i
;
1130 sband
= local
->hw
.wiphy
->bands
[band
];
1131 if (WARN_ON_ONCE(!sband
))
1135 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
1136 if ((BIT(i
) & rate_mask
) == 0)
1137 continue; /* skip rate */
1138 rates
[num_rates
++] = (u8
) (sband
->bitrates
[i
].bitrate
/ 5);
1141 supp_rates_len
= min_t(int, num_rates
, 8);
1143 if (end
- pos
< 2 + supp_rates_len
)
1145 *pos
++ = WLAN_EID_SUPP_RATES
;
1146 *pos
++ = supp_rates_len
;
1147 memcpy(pos
, rates
, supp_rates_len
);
1148 pos
+= supp_rates_len
;
1150 /* insert "request information" if in custom IEs */
1152 static const u8 before_extrates
[] = {
1154 WLAN_EID_SUPP_RATES
,
1157 noffset
= ieee80211_ie_split(ie
, ie_len
,
1159 ARRAY_SIZE(before_extrates
),
1161 if (end
- pos
< noffset
- offset
)
1163 memcpy(pos
, ie
+ offset
, noffset
- offset
);
1164 pos
+= noffset
- offset
;
1168 ext_rates_len
= num_rates
- supp_rates_len
;
1169 if (ext_rates_len
> 0) {
1170 if (end
- pos
< 2 + ext_rates_len
)
1172 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
1173 *pos
++ = ext_rates_len
;
1174 memcpy(pos
, rates
+ supp_rates_len
, ext_rates_len
);
1175 pos
+= ext_rates_len
;
1178 if (channel
&& sband
->band
== IEEE80211_BAND_2GHZ
) {
1181 *pos
++ = WLAN_EID_DS_PARAMS
;
1186 /* insert custom IEs that go before HT */
1188 static const u8 before_ht
[] = {
1190 WLAN_EID_SUPP_RATES
,
1192 WLAN_EID_EXT_SUPP_RATES
,
1194 WLAN_EID_SUPPORTED_REGULATORY_CLASSES
,
1196 noffset
= ieee80211_ie_split(ie
, ie_len
,
1197 before_ht
, ARRAY_SIZE(before_ht
),
1199 if (end
- pos
< noffset
- offset
)
1201 memcpy(pos
, ie
+ offset
, noffset
- offset
);
1202 pos
+= noffset
- offset
;
1206 if (sband
->ht_cap
.ht_supported
) {
1207 if (end
- pos
< 2 + sizeof(struct ieee80211_ht_cap
))
1209 pos
= ieee80211_ie_build_ht_cap(pos
, &sband
->ht_cap
,
1214 * If adding more here, adjust code in main.c
1215 * that calculates local->scan_ies_len.
1218 /* add any remaining custom IEs */
1221 if (end
- pos
< noffset
- offset
)
1223 memcpy(pos
, ie
+ offset
, noffset
- offset
);
1224 pos
+= noffset
- offset
;
1227 if (sband
->vht_cap
.vht_supported
) {
1228 if (end
- pos
< 2 + sizeof(struct ieee80211_vht_cap
))
1230 pos
= ieee80211_ie_build_vht_cap(pos
, &sband
->vht_cap
,
1231 sband
->vht_cap
.cap
);
1234 return pos
- buffer
;
1236 WARN_ONCE(1, "not enough space for preq IEs\n");
1237 return pos
- buffer
;
1240 struct sk_buff
*ieee80211_build_probe_req(struct ieee80211_sub_if_data
*sdata
,
1241 u8
*dst
, u32 ratemask
,
1242 struct ieee80211_channel
*chan
,
1243 const u8
*ssid
, size_t ssid_len
,
1244 const u8
*ie
, size_t ie_len
,
1247 struct ieee80211_local
*local
= sdata
->local
;
1248 struct sk_buff
*skb
;
1249 struct ieee80211_mgmt
*mgmt
;
1254 * Do not send DS Channel parameter for directed probe requests
1255 * in order to maximize the chance that we get a response. Some
1256 * badly-behaved APs don't respond when this parameter is included.
1261 chan_no
= ieee80211_frequency_to_channel(chan
->center_freq
);
1263 skb
= ieee80211_probereq_get(&local
->hw
, &sdata
->vif
,
1264 ssid
, ssid_len
, 100 + ie_len
);
1268 ies_len
= ieee80211_build_preq_ies(local
, skb_tail_pointer(skb
),
1270 ie
, ie_len
, chan
->band
,
1272 skb_put(skb
, ies_len
);
1275 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
1276 memcpy(mgmt
->da
, dst
, ETH_ALEN
);
1277 memcpy(mgmt
->bssid
, dst
, ETH_ALEN
);
1280 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
;
1285 void ieee80211_send_probe_req(struct ieee80211_sub_if_data
*sdata
, u8
*dst
,
1286 const u8
*ssid
, size_t ssid_len
,
1287 const u8
*ie
, size_t ie_len
,
1288 u32 ratemask
, bool directed
, u32 tx_flags
,
1289 struct ieee80211_channel
*channel
, bool scan
)
1291 struct sk_buff
*skb
;
1293 skb
= ieee80211_build_probe_req(sdata
, dst
, ratemask
, channel
,
1295 ie
, ie_len
, directed
);
1297 IEEE80211_SKB_CB(skb
)->flags
|= tx_flags
;
1299 ieee80211_tx_skb_tid_band(sdata
, skb
, 7, channel
->band
);
1301 ieee80211_tx_skb(sdata
, skb
);
1305 u32
ieee80211_sta_get_rates(struct ieee80211_local
*local
,
1306 struct ieee802_11_elems
*elems
,
1307 enum ieee80211_band band
, u32
*basic_rates
)
1309 struct ieee80211_supported_band
*sband
;
1310 struct ieee80211_rate
*bitrates
;
1314 sband
= local
->hw
.wiphy
->bands
[band
];
1316 if (WARN_ON(!sband
))
1319 bitrates
= sband
->bitrates
;
1320 num_rates
= sband
->n_bitrates
;
1322 for (i
= 0; i
< elems
->supp_rates_len
+
1323 elems
->ext_supp_rates_len
; i
++) {
1327 if (i
< elems
->supp_rates_len
)
1328 rate
= elems
->supp_rates
[i
];
1329 else if (elems
->ext_supp_rates
)
1330 rate
= elems
->ext_supp_rates
1331 [i
- elems
->supp_rates_len
];
1332 own_rate
= 5 * (rate
& 0x7f);
1333 is_basic
= !!(rate
& 0x80);
1335 if (is_basic
&& (rate
& 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY
)
1338 for (j
= 0; j
< num_rates
; j
++) {
1339 if (bitrates
[j
].bitrate
== own_rate
) {
1340 supp_rates
|= BIT(j
);
1341 if (basic_rates
&& is_basic
)
1342 *basic_rates
|= BIT(j
);
1349 void ieee80211_stop_device(struct ieee80211_local
*local
)
1351 ieee80211_led_radio(local
, false);
1352 ieee80211_mod_tpt_led_trig(local
, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO
);
1354 cancel_work_sync(&local
->reconfig_filter
);
1356 flush_workqueue(local
->workqueue
);
1360 int ieee80211_reconfig(struct ieee80211_local
*local
)
1362 struct ieee80211_hw
*hw
= &local
->hw
;
1363 struct ieee80211_sub_if_data
*sdata
;
1364 struct ieee80211_chanctx
*ctx
;
1365 struct sta_info
*sta
;
1367 bool reconfig_due_to_wowlan
= false;
1370 if (local
->suspended
)
1371 local
->resuming
= true;
1373 if (local
->wowlan
) {
1374 local
->wowlan
= false;
1375 res
= drv_resume(local
);
1377 local
->resuming
= false;
1384 * res is 1, which means the driver requested
1385 * to go through a regular reset on wakeup.
1387 reconfig_due_to_wowlan
= true;
1390 /* everything else happens only if HW was up & running */
1391 if (!local
->open_count
)
1395 * Upon resume hardware can sometimes be goofy due to
1396 * various platform / driver / bus issues, so restarting
1397 * the device may at times not work immediately. Propagate
1400 res
= drv_start(local
);
1402 WARN(local
->suspended
, "Hardware became unavailable "
1403 "upon resume. This could be a software issue "
1404 "prior to suspend or a hardware issue.\n");
1408 /* setup fragmentation threshold */
1409 drv_set_frag_threshold(local
, hw
->wiphy
->frag_threshold
);
1411 /* setup RTS threshold */
1412 drv_set_rts_threshold(local
, hw
->wiphy
->rts_threshold
);
1414 /* reset coverage class */
1415 drv_set_coverage_class(local
, hw
->wiphy
->coverage_class
);
1417 ieee80211_led_radio(local
, true);
1418 ieee80211_mod_tpt_led_trig(local
,
1419 IEEE80211_TPT_LEDTRIG_FL_RADIO
, 0);
1421 /* add interfaces */
1422 sdata
= rtnl_dereference(local
->monitor_sdata
);
1424 res
= drv_add_interface(local
, sdata
);
1426 rcu_assign_pointer(local
->monitor_sdata
, NULL
);
1432 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1433 if (sdata
->vif
.type
!= NL80211_IFTYPE_AP_VLAN
&&
1434 sdata
->vif
.type
!= NL80211_IFTYPE_MONITOR
&&
1435 ieee80211_sdata_running(sdata
))
1436 res
= drv_add_interface(local
, sdata
);
1439 /* add channel contexts */
1440 if (local
->use_chanctx
) {
1441 mutex_lock(&local
->chanctx_mtx
);
1442 list_for_each_entry(ctx
, &local
->chanctx_list
, list
)
1443 WARN_ON(drv_add_chanctx(local
, ctx
));
1444 mutex_unlock(&local
->chanctx_mtx
);
1447 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1448 struct ieee80211_chanctx_conf
*ctx_conf
;
1450 if (!ieee80211_sdata_running(sdata
))
1453 mutex_lock(&local
->chanctx_mtx
);
1454 ctx_conf
= rcu_dereference_protected(sdata
->vif
.chanctx_conf
,
1455 lockdep_is_held(&local
->chanctx_mtx
));
1457 ctx
= container_of(ctx_conf
, struct ieee80211_chanctx
,
1459 drv_assign_vif_chanctx(local
, sdata
, ctx
);
1461 mutex_unlock(&local
->chanctx_mtx
);
1464 sdata
= rtnl_dereference(local
->monitor_sdata
);
1465 if (sdata
&& local
->use_chanctx
&& ieee80211_sdata_running(sdata
)) {
1466 struct ieee80211_chanctx_conf
*ctx_conf
;
1468 mutex_lock(&local
->chanctx_mtx
);
1469 ctx_conf
= rcu_dereference_protected(sdata
->vif
.chanctx_conf
,
1470 lockdep_is_held(&local
->chanctx_mtx
));
1472 ctx
= container_of(ctx_conf
, struct ieee80211_chanctx
,
1474 drv_assign_vif_chanctx(local
, sdata
, ctx
);
1476 mutex_unlock(&local
->chanctx_mtx
);
1480 mutex_lock(&local
->sta_mtx
);
1481 list_for_each_entry(sta
, &local
->sta_list
, list
) {
1482 enum ieee80211_sta_state state
;
1487 /* AP-mode stations will be added later */
1488 if (sta
->sdata
->vif
.type
== NL80211_IFTYPE_AP
)
1491 for (state
= IEEE80211_STA_NOTEXIST
;
1492 state
< sta
->sta_state
; state
++)
1493 WARN_ON(drv_sta_state(local
, sta
->sdata
, sta
, state
,
1496 mutex_unlock(&local
->sta_mtx
);
1498 /* reconfigure tx conf */
1499 if (hw
->queues
>= IEEE80211_NUM_ACS
) {
1500 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1501 if (sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
||
1502 sdata
->vif
.type
== NL80211_IFTYPE_MONITOR
||
1503 !ieee80211_sdata_running(sdata
))
1506 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++)
1507 drv_conf_tx(local
, sdata
, i
,
1508 &sdata
->tx_conf
[i
]);
1512 /* reconfigure hardware */
1513 ieee80211_hw_config(local
, ~0);
1515 ieee80211_configure_filter(local
);
1517 /* Finally also reconfigure all the BSS information */
1518 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1521 if (!ieee80211_sdata_running(sdata
))
1524 /* common change flags for all interface types */
1525 changed
= BSS_CHANGED_ERP_CTS_PROT
|
1526 BSS_CHANGED_ERP_PREAMBLE
|
1527 BSS_CHANGED_ERP_SLOT
|
1529 BSS_CHANGED_BASIC_RATES
|
1530 BSS_CHANGED_BEACON_INT
|
1535 BSS_CHANGED_TXPOWER
;
1538 if (local
->resuming
&& !reconfig_due_to_wowlan
)
1539 sdata
->vif
.bss_conf
= sdata
->suspend_bss_conf
;
1542 switch (sdata
->vif
.type
) {
1543 case NL80211_IFTYPE_STATION
:
1544 changed
|= BSS_CHANGED_ASSOC
|
1545 BSS_CHANGED_ARP_FILTER
|
1548 if (sdata
->u
.mgd
.dtim_period
)
1549 changed
|= BSS_CHANGED_DTIM_PERIOD
;
1551 mutex_lock(&sdata
->u
.mgd
.mtx
);
1552 ieee80211_bss_info_change_notify(sdata
, changed
);
1553 mutex_unlock(&sdata
->u
.mgd
.mtx
);
1555 case NL80211_IFTYPE_ADHOC
:
1556 changed
|= BSS_CHANGED_IBSS
;
1558 case NL80211_IFTYPE_AP
:
1559 changed
|= BSS_CHANGED_SSID
| BSS_CHANGED_P2P_PS
;
1561 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
) {
1562 changed
|= BSS_CHANGED_AP_PROBE_RESP
;
1564 if (rcu_access_pointer(sdata
->u
.ap
.beacon
))
1565 drv_start_ap(local
, sdata
);
1569 case NL80211_IFTYPE_MESH_POINT
:
1570 if (sdata
->vif
.bss_conf
.enable_beacon
) {
1571 changed
|= BSS_CHANGED_BEACON
|
1572 BSS_CHANGED_BEACON_ENABLED
;
1573 ieee80211_bss_info_change_notify(sdata
, changed
);
1576 case NL80211_IFTYPE_WDS
:
1578 case NL80211_IFTYPE_AP_VLAN
:
1579 case NL80211_IFTYPE_MONITOR
:
1580 /* ignore virtual */
1582 case NL80211_IFTYPE_P2P_DEVICE
:
1583 changed
= BSS_CHANGED_IDLE
;
1585 case NL80211_IFTYPE_UNSPECIFIED
:
1586 case NUM_NL80211_IFTYPES
:
1587 case NL80211_IFTYPE_P2P_CLIENT
:
1588 case NL80211_IFTYPE_P2P_GO
:
1594 ieee80211_recalc_ps(local
, -1);
1597 * The sta might be in psm against the ap (e.g. because
1598 * this was the state before a hw restart), so we
1599 * explicitly send a null packet in order to make sure
1600 * it'll sync against the ap (and get out of psm).
1602 if (!(local
->hw
.conf
.flags
& IEEE80211_CONF_PS
)) {
1603 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1604 if (sdata
->vif
.type
!= NL80211_IFTYPE_STATION
)
1606 if (!sdata
->u
.mgd
.associated
)
1609 ieee80211_send_nullfunc(local
, sdata
, 0);
1613 /* APs are now beaconing, add back stations */
1614 mutex_lock(&local
->sta_mtx
);
1615 list_for_each_entry(sta
, &local
->sta_list
, list
) {
1616 enum ieee80211_sta_state state
;
1621 if (sta
->sdata
->vif
.type
!= NL80211_IFTYPE_AP
)
1624 for (state
= IEEE80211_STA_NOTEXIST
;
1625 state
< sta
->sta_state
; state
++)
1626 WARN_ON(drv_sta_state(local
, sta
->sdata
, sta
, state
,
1629 mutex_unlock(&local
->sta_mtx
);
1632 list_for_each_entry(sdata
, &local
->interfaces
, list
)
1633 if (ieee80211_sdata_running(sdata
))
1634 ieee80211_enable_keys(sdata
);
1637 local
->in_reconfig
= false;
1641 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
1642 * sessions can be established after a resume.
1644 * Also tear down aggregation sessions since reconfiguring
1645 * them in a hardware restart scenario is not easily done
1646 * right now, and the hardware will have lost information
1647 * about the sessions, but we and the AP still think they
1648 * are active. This is really a workaround though.
1650 if (hw
->flags
& IEEE80211_HW_AMPDU_AGGREGATION
) {
1651 mutex_lock(&local
->sta_mtx
);
1653 list_for_each_entry(sta
, &local
->sta_list
, list
) {
1654 ieee80211_sta_tear_down_BA_sessions(
1655 sta
, AGG_STOP_LOCAL_REQUEST
);
1656 clear_sta_flag(sta
, WLAN_STA_BLOCK_BA
);
1659 mutex_unlock(&local
->sta_mtx
);
1662 ieee80211_wake_queues_by_reason(hw
,
1663 IEEE80211_QUEUE_STOP_REASON_SUSPEND
);
1666 * If this is for hw restart things are still running.
1667 * We may want to change that later, however.
1669 if (!local
->suspended
|| reconfig_due_to_wowlan
)
1670 drv_restart_complete(local
);
1672 if (!local
->suspended
)
1676 /* first set suspended false, then resuming */
1677 local
->suspended
= false;
1679 local
->resuming
= false;
1681 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1682 switch(sdata
->vif
.type
) {
1683 case NL80211_IFTYPE_STATION
:
1684 ieee80211_sta_restart(sdata
);
1686 case NL80211_IFTYPE_ADHOC
:
1687 ieee80211_ibss_restart(sdata
);
1689 case NL80211_IFTYPE_MESH_POINT
:
1690 ieee80211_mesh_restart(sdata
);
1697 mod_timer(&local
->sta_cleanup
, jiffies
+ 1);
1699 mutex_lock(&local
->sta_mtx
);
1700 list_for_each_entry(sta
, &local
->sta_list
, list
)
1701 mesh_plink_restart(sta
);
1702 mutex_unlock(&local
->sta_mtx
);
1709 void ieee80211_resume_disconnect(struct ieee80211_vif
*vif
)
1711 struct ieee80211_sub_if_data
*sdata
;
1712 struct ieee80211_local
*local
;
1713 struct ieee80211_key
*key
;
1718 sdata
= vif_to_sdata(vif
);
1719 local
= sdata
->local
;
1721 if (WARN_ON(!local
->resuming
))
1724 if (WARN_ON(vif
->type
!= NL80211_IFTYPE_STATION
))
1727 sdata
->flags
|= IEEE80211_SDATA_DISCONNECT_RESUME
;
1729 mutex_lock(&local
->key_mtx
);
1730 list_for_each_entry(key
, &sdata
->key_list
, list
)
1731 key
->flags
|= KEY_FLAG_TAINTED
;
1732 mutex_unlock(&local
->key_mtx
);
1734 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect
);
1736 void ieee80211_recalc_smps(struct ieee80211_sub_if_data
*sdata
)
1738 struct ieee80211_local
*local
= sdata
->local
;
1739 struct ieee80211_chanctx_conf
*chanctx_conf
;
1740 struct ieee80211_chanctx
*chanctx
;
1742 mutex_lock(&local
->chanctx_mtx
);
1744 chanctx_conf
= rcu_dereference_protected(sdata
->vif
.chanctx_conf
,
1745 lockdep_is_held(&local
->chanctx_mtx
));
1747 if (WARN_ON_ONCE(!chanctx_conf
))
1750 chanctx
= container_of(chanctx_conf
, struct ieee80211_chanctx
, conf
);
1751 ieee80211_recalc_smps_chanctx(local
, chanctx
);
1753 mutex_unlock(&local
->chanctx_mtx
);
1756 static bool ieee80211_id_in_list(const u8
*ids
, int n_ids
, u8 id
)
1760 for (i
= 0; i
< n_ids
; i
++)
1767 * ieee80211_ie_split - split an IE buffer according to ordering
1769 * @ies: the IE buffer
1770 * @ielen: the length of the IE buffer
1771 * @ids: an array with element IDs that are allowed before
1773 * @n_ids: the size of the element ID array
1774 * @offset: offset where to start splitting in the buffer
1776 * This function splits an IE buffer by updating the @offset
1777 * variable to point to the location where the buffer should be
1780 * It assumes that the given IE buffer is well-formed, this
1781 * has to be guaranteed by the caller!
1783 * It also assumes that the IEs in the buffer are ordered
1784 * correctly, if not the result of using this function will not
1785 * be ordered correctly either, i.e. it does no reordering.
1787 * The function returns the offset where the next part of the
1788 * buffer starts, which may be @ielen if the entire (remainder)
1789 * of the buffer should be used.
1791 size_t ieee80211_ie_split(const u8
*ies
, size_t ielen
,
1792 const u8
*ids
, int n_ids
, size_t offset
)
1794 size_t pos
= offset
;
1796 while (pos
< ielen
&& ieee80211_id_in_list(ids
, n_ids
, ies
[pos
]))
1797 pos
+= 2 + ies
[pos
+ 1];
1802 size_t ieee80211_ie_split_vendor(const u8
*ies
, size_t ielen
, size_t offset
)
1804 size_t pos
= offset
;
1806 while (pos
< ielen
&& ies
[pos
] != WLAN_EID_VENDOR_SPECIFIC
)
1807 pos
+= 2 + ies
[pos
+ 1];
1812 static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data
*sdata
,
1816 trace_api_enable_rssi_reports(sdata
, rssi_min_thold
, rssi_max_thold
);
1818 if (WARN_ON(sdata
->vif
.type
!= NL80211_IFTYPE_STATION
))
1822 * Scale up threshold values before storing it, as the RSSI averaging
1823 * algorithm uses a scaled up value as well. Change this scaling
1824 * factor if the RSSI averaging algorithm changes.
1826 sdata
->u
.mgd
.rssi_min_thold
= rssi_min_thold
*16;
1827 sdata
->u
.mgd
.rssi_max_thold
= rssi_max_thold
*16;
1830 void ieee80211_enable_rssi_reports(struct ieee80211_vif
*vif
,
1834 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
1836 WARN_ON(rssi_min_thold
== rssi_max_thold
||
1837 rssi_min_thold
> rssi_max_thold
);
1839 _ieee80211_enable_rssi_reports(sdata
, rssi_min_thold
,
1842 EXPORT_SYMBOL(ieee80211_enable_rssi_reports
);
1844 void ieee80211_disable_rssi_reports(struct ieee80211_vif
*vif
)
1846 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
1848 _ieee80211_enable_rssi_reports(sdata
, 0, 0);
1850 EXPORT_SYMBOL(ieee80211_disable_rssi_reports
);
1852 u8
*ieee80211_ie_build_ht_cap(u8
*pos
, struct ieee80211_sta_ht_cap
*ht_cap
,
1857 *pos
++ = WLAN_EID_HT_CAPABILITY
;
1858 *pos
++ = sizeof(struct ieee80211_ht_cap
);
1859 memset(pos
, 0, sizeof(struct ieee80211_ht_cap
));
1861 /* capability flags */
1862 tmp
= cpu_to_le16(cap
);
1863 memcpy(pos
, &tmp
, sizeof(u16
));
1866 /* AMPDU parameters */
1867 *pos
++ = ht_cap
->ampdu_factor
|
1868 (ht_cap
->ampdu_density
<<
1869 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT
);
1872 memcpy(pos
, &ht_cap
->mcs
, sizeof(ht_cap
->mcs
));
1873 pos
+= sizeof(ht_cap
->mcs
);
1875 /* extended capabilities */
1876 pos
+= sizeof(__le16
);
1878 /* BF capabilities */
1879 pos
+= sizeof(__le32
);
1881 /* antenna selection */
1887 u8
*ieee80211_ie_build_vht_cap(u8
*pos
, struct ieee80211_sta_vht_cap
*vht_cap
,
1892 *pos
++ = WLAN_EID_VHT_CAPABILITY
;
1893 *pos
++ = sizeof(struct ieee80211_vht_cap
);
1894 memset(pos
, 0, sizeof(struct ieee80211_vht_cap
));
1896 /* capability flags */
1897 tmp
= cpu_to_le32(cap
);
1898 memcpy(pos
, &tmp
, sizeof(u32
));
1902 memcpy(pos
, &vht_cap
->vht_mcs
, sizeof(vht_cap
->vht_mcs
));
1903 pos
+= sizeof(vht_cap
->vht_mcs
);
1908 u8
*ieee80211_ie_build_ht_oper(u8
*pos
, struct ieee80211_sta_ht_cap
*ht_cap
,
1909 const struct cfg80211_chan_def
*chandef
,
1912 struct ieee80211_ht_operation
*ht_oper
;
1913 /* Build HT Information */
1914 *pos
++ = WLAN_EID_HT_OPERATION
;
1915 *pos
++ = sizeof(struct ieee80211_ht_operation
);
1916 ht_oper
= (struct ieee80211_ht_operation
*)pos
;
1917 ht_oper
->primary_chan
= ieee80211_frequency_to_channel(
1918 chandef
->chan
->center_freq
);
1919 switch (chandef
->width
) {
1920 case NL80211_CHAN_WIDTH_160
:
1921 case NL80211_CHAN_WIDTH_80P80
:
1922 case NL80211_CHAN_WIDTH_80
:
1923 case NL80211_CHAN_WIDTH_40
:
1924 if (chandef
->center_freq1
> chandef
->chan
->center_freq
)
1925 ht_oper
->ht_param
= IEEE80211_HT_PARAM_CHA_SEC_ABOVE
;
1927 ht_oper
->ht_param
= IEEE80211_HT_PARAM_CHA_SEC_BELOW
;
1930 ht_oper
->ht_param
= IEEE80211_HT_PARAM_CHA_SEC_NONE
;
1933 if (ht_cap
->cap
& IEEE80211_HT_CAP_SUP_WIDTH_20_40
&&
1934 chandef
->width
!= NL80211_CHAN_WIDTH_20_NOHT
&&
1935 chandef
->width
!= NL80211_CHAN_WIDTH_20
)
1936 ht_oper
->ht_param
|= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY
;
1938 ht_oper
->operation_mode
= cpu_to_le16(prot_mode
);
1939 ht_oper
->stbc_param
= 0x0000;
1941 /* It seems that Basic MCS set and Supported MCS set
1942 are identical for the first 10 bytes */
1943 memset(&ht_oper
->basic_set
, 0, 16);
1944 memcpy(&ht_oper
->basic_set
, &ht_cap
->mcs
, 10);
1946 return pos
+ sizeof(struct ieee80211_ht_operation
);
1949 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel
*control_chan
,
1950 const struct ieee80211_ht_operation
*ht_oper
,
1951 struct cfg80211_chan_def
*chandef
)
1953 enum nl80211_channel_type channel_type
;
1956 cfg80211_chandef_create(chandef
, control_chan
,
1957 NL80211_CHAN_NO_HT
);
1961 switch (ht_oper
->ht_param
& IEEE80211_HT_PARAM_CHA_SEC_OFFSET
) {
1962 case IEEE80211_HT_PARAM_CHA_SEC_NONE
:
1963 channel_type
= NL80211_CHAN_HT20
;
1965 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE
:
1966 channel_type
= NL80211_CHAN_HT40PLUS
;
1968 case IEEE80211_HT_PARAM_CHA_SEC_BELOW
:
1969 channel_type
= NL80211_CHAN_HT40MINUS
;
1972 channel_type
= NL80211_CHAN_NO_HT
;
1975 cfg80211_chandef_create(chandef
, control_chan
, channel_type
);
1978 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data
*sdata
,
1979 struct sk_buff
*skb
, bool need_basic
,
1980 enum ieee80211_band band
)
1982 struct ieee80211_local
*local
= sdata
->local
;
1983 struct ieee80211_supported_band
*sband
;
1986 u32 basic_rates
= sdata
->vif
.bss_conf
.basic_rates
;
1988 sband
= local
->hw
.wiphy
->bands
[band
];
1989 rates
= sband
->n_bitrates
;
1993 if (skb_tailroom(skb
) < rates
+ 2)
1996 pos
= skb_put(skb
, rates
+ 2);
1997 *pos
++ = WLAN_EID_SUPP_RATES
;
1999 for (i
= 0; i
< rates
; i
++) {
2001 if (need_basic
&& basic_rates
& BIT(i
))
2003 rate
= sband
->bitrates
[i
].bitrate
;
2004 *pos
++ = basic
| (u8
) (rate
/ 5);
2010 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data
*sdata
,
2011 struct sk_buff
*skb
, bool need_basic
,
2012 enum ieee80211_band band
)
2014 struct ieee80211_local
*local
= sdata
->local
;
2015 struct ieee80211_supported_band
*sband
;
2017 u8 i
, exrates
, *pos
;
2018 u32 basic_rates
= sdata
->vif
.bss_conf
.basic_rates
;
2020 sband
= local
->hw
.wiphy
->bands
[band
];
2021 exrates
= sband
->n_bitrates
;
2027 if (skb_tailroom(skb
) < exrates
+ 2)
2031 pos
= skb_put(skb
, exrates
+ 2);
2032 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
2034 for (i
= 8; i
< sband
->n_bitrates
; i
++) {
2036 if (need_basic
&& basic_rates
& BIT(i
))
2038 rate
= sband
->bitrates
[i
].bitrate
;
2039 *pos
++ = basic
| (u8
) (rate
/ 5);
2045 int ieee80211_ave_rssi(struct ieee80211_vif
*vif
)
2047 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
2048 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2050 if (WARN_ON_ONCE(sdata
->vif
.type
!= NL80211_IFTYPE_STATION
)) {
2051 /* non-managed type inferfaces */
2054 return ifmgd
->ave_beacon_signal
;
2056 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi
);
2058 u8
ieee80211_mcs_to_chains(const struct ieee80211_mcs_info
*mcs
)
2063 /* TODO: consider rx_highest */
2065 if (mcs
->rx_mask
[3])
2067 if (mcs
->rx_mask
[2])
2069 if (mcs
->rx_mask
[1])
2075 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
2076 * @local: mac80211 hw info struct
2077 * @status: RX status
2078 * @mpdu_len: total MPDU length (including FCS)
2079 * @mpdu_offset: offset into MPDU to calculate timestamp at
2081 * This function calculates the RX timestamp at the given MPDU offset, taking
2082 * into account what the RX timestamp was. An offset of 0 will just normalize
2083 * the timestamp to TSF at beginning of MPDU reception.
2085 u64
ieee80211_calculate_rx_timestamp(struct ieee80211_local
*local
,
2086 struct ieee80211_rx_status
*status
,
2087 unsigned int mpdu_len
,
2088 unsigned int mpdu_offset
)
2090 u64 ts
= status
->mactime
;
2091 struct rate_info ri
;
2094 if (WARN_ON(!ieee80211_have_rx_timestamp(status
)))
2097 memset(&ri
, 0, sizeof(ri
));
2099 /* Fill cfg80211 rate info */
2100 if (status
->flag
& RX_FLAG_HT
) {
2101 ri
.mcs
= status
->rate_idx
;
2102 ri
.flags
|= RATE_INFO_FLAGS_MCS
;
2103 if (status
->flag
& RX_FLAG_40MHZ
)
2104 ri
.flags
|= RATE_INFO_FLAGS_40_MHZ_WIDTH
;
2105 if (status
->flag
& RX_FLAG_SHORT_GI
)
2106 ri
.flags
|= RATE_INFO_FLAGS_SHORT_GI
;
2107 } else if (status
->flag
& RX_FLAG_VHT
) {
2108 ri
.flags
|= RATE_INFO_FLAGS_VHT_MCS
;
2109 ri
.mcs
= status
->rate_idx
;
2110 ri
.nss
= status
->vht_nss
;
2111 if (status
->flag
& RX_FLAG_40MHZ
)
2112 ri
.flags
|= RATE_INFO_FLAGS_40_MHZ_WIDTH
;
2113 if (status
->flag
& RX_FLAG_80MHZ
)
2114 ri
.flags
|= RATE_INFO_FLAGS_80_MHZ_WIDTH
;
2115 if (status
->flag
& RX_FLAG_80P80MHZ
)
2116 ri
.flags
|= RATE_INFO_FLAGS_80P80_MHZ_WIDTH
;
2117 if (status
->flag
& RX_FLAG_160MHZ
)
2118 ri
.flags
|= RATE_INFO_FLAGS_160_MHZ_WIDTH
;
2119 if (status
->flag
& RX_FLAG_SHORT_GI
)
2120 ri
.flags
|= RATE_INFO_FLAGS_SHORT_GI
;
2122 struct ieee80211_supported_band
*sband
;
2124 sband
= local
->hw
.wiphy
->bands
[status
->band
];
2125 ri
.legacy
= sband
->bitrates
[status
->rate_idx
].bitrate
;
2128 rate
= cfg80211_calculate_bitrate(&ri
);
2130 /* rewind from end of MPDU */
2131 if (status
->flag
& RX_FLAG_MACTIME_END
)
2132 ts
-= mpdu_len
* 8 * 10 / rate
;
2134 ts
+= mpdu_offset
* 8 * 10 / rate
;
2139 void ieee80211_dfs_cac_cancel(struct ieee80211_local
*local
)
2141 struct ieee80211_sub_if_data
*sdata
;
2143 mutex_lock(&local
->iflist_mtx
);
2144 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
2145 cancel_delayed_work_sync(&sdata
->dfs_cac_timer_work
);
2147 if (sdata
->wdev
.cac_started
) {
2148 ieee80211_vif_release_channel(sdata
);
2149 cfg80211_cac_event(sdata
->dev
,
2150 NL80211_RADAR_CAC_ABORTED
,
2154 mutex_unlock(&local
->iflist_mtx
);
2157 void ieee80211_dfs_radar_detected_work(struct work_struct
*work
)
2159 struct ieee80211_local
*local
=
2160 container_of(work
, struct ieee80211_local
, radar_detected_work
);
2161 struct cfg80211_chan_def chandef
;
2163 ieee80211_dfs_cac_cancel(local
);
2165 if (local
->use_chanctx
)
2166 /* currently not handled */
2169 cfg80211_chandef_create(&chandef
, local
->hw
.conf
.channel
,
2170 local
->hw
.conf
.channel_type
);
2171 cfg80211_radar_event(local
->hw
.wiphy
, &chandef
, GFP_KERNEL
);
2175 void ieee80211_radar_detected(struct ieee80211_hw
*hw
)
2177 struct ieee80211_local
*local
= hw_to_local(hw
);
2179 trace_api_radar_detected(local
);
2181 ieee80211_queue_work(hw
, &local
->radar_detected_work
);
2183 EXPORT_SYMBOL(ieee80211_radar_detected
);