forked from microsoft/WSL2-Linux-Kernel
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathmac80211.h
4818 lines (4565 loc) · 188 KB
/
mac80211.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* mac80211 <-> driver interface
*
* Copyright 2002-2005, Devicescape Software, Inc.
* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
* Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef MAC80211_H
#define MAC80211_H
#include <linux/bug.h>
#include <linux/kernel.h>
#include <linux/if_ether.h>
#include <linux/skbuff.h>
#include <linux/ieee80211.h>
#include <net/cfg80211.h>
#include <asm/unaligned.h>
/**
* DOC: Introduction
*
* mac80211 is the Linux stack for 802.11 hardware that implements
* only partial functionality in hard- or firmware. This document
* defines the interface between mac80211 and low-level hardware
* drivers.
*/
/**
* DOC: Calling mac80211 from interrupts
*
* Only ieee80211_tx_status_irqsafe() and ieee80211_rx_irqsafe() can be
* called in hardware interrupt context. The low-level driver must not call any
* other functions in hardware interrupt context. If there is a need for such
* call, the low-level driver should first ACK the interrupt and perform the
* IEEE 802.11 code call after this, e.g. from a scheduled workqueue or even
* tasklet function.
*
* NOTE: If the driver opts to use the _irqsafe() functions, it may not also
* use the non-IRQ-safe functions!
*/
/**
* DOC: Warning
*
* If you're reading this document and not the header file itself, it will
* be incomplete because not all documentation has been converted yet.
*/
/**
* DOC: Frame format
*
* As a general rule, when frames are passed between mac80211 and the driver,
* they start with the IEEE 802.11 header and include the same octets that are
* sent over the air except for the FCS which should be calculated by the
* hardware.
*
* There are, however, various exceptions to this rule for advanced features:
*
* The first exception is for hardware encryption and decryption offload
* where the IV/ICV may or may not be generated in hardware.
*
* Secondly, when the hardware handles fragmentation, the frame handed to
* the driver from mac80211 is the MSDU, not the MPDU.
*/
/**
* DOC: mac80211 workqueue
*
* mac80211 provides its own workqueue for drivers and internal mac80211 use.
* The workqueue is a single threaded workqueue and can only be accessed by
* helpers for sanity checking. Drivers must ensure all work added onto the
* mac80211 workqueue should be cancelled on the driver stop() callback.
*
* mac80211 will flushed the workqueue upon interface removal and during
* suspend.
*
* All work performed on the mac80211 workqueue must not acquire the RTNL lock.
*
*/
struct device;
/**
* enum ieee80211_max_queues - maximum number of queues
*
* @IEEE80211_MAX_QUEUES: Maximum number of regular device queues.
* @IEEE80211_MAX_QUEUE_MAP: bitmap with maximum queues set
*/
enum ieee80211_max_queues {
IEEE80211_MAX_QUEUES = 16,
IEEE80211_MAX_QUEUE_MAP = BIT(IEEE80211_MAX_QUEUES) - 1,
};
#define IEEE80211_INVAL_HW_QUEUE 0xff
/**
* enum ieee80211_ac_numbers - AC numbers as used in mac80211
* @IEEE80211_AC_VO: voice
* @IEEE80211_AC_VI: video
* @IEEE80211_AC_BE: best effort
* @IEEE80211_AC_BK: background
*/
enum ieee80211_ac_numbers {
IEEE80211_AC_VO = 0,
IEEE80211_AC_VI = 1,
IEEE80211_AC_BE = 2,
IEEE80211_AC_BK = 3,
};
#define IEEE80211_NUM_ACS 4
/**
* struct ieee80211_tx_queue_params - transmit queue configuration
*
* The information provided in this structure is required for QoS
* transmit queue configuration. Cf. IEEE 802.11 7.3.2.29.
*
* @aifs: arbitration interframe space [0..255]
* @cw_min: minimum contention window [a value of the form
* 2^n-1 in the range 1..32767]
* @cw_max: maximum contention window [like @cw_min]
* @txop: maximum burst time in units of 32 usecs, 0 meaning disabled
* @acm: is mandatory admission control required for the access category
* @uapsd: is U-APSD mode enabled for the queue
*/
struct ieee80211_tx_queue_params {
u16 txop;
u16 cw_min;
u16 cw_max;
u8 aifs;
bool acm;
bool uapsd;
};
struct ieee80211_low_level_stats {
unsigned int dot11ACKFailureCount;
unsigned int dot11RTSFailureCount;
unsigned int dot11FCSErrorCount;
unsigned int dot11RTSSuccessCount;
};
/**
* enum ieee80211_chanctx_change - change flag for channel context
* @IEEE80211_CHANCTX_CHANGE_WIDTH: The channel width changed
* @IEEE80211_CHANCTX_CHANGE_RX_CHAINS: The number of RX chains changed
* @IEEE80211_CHANCTX_CHANGE_RADAR: radar detection flag changed
* @IEEE80211_CHANCTX_CHANGE_CHANNEL: switched to another operating channel,
* this is used only with channel switching with CSA
* @IEEE80211_CHANCTX_CHANGE_MIN_WIDTH: The min required channel width changed
*/
enum ieee80211_chanctx_change {
IEEE80211_CHANCTX_CHANGE_WIDTH = BIT(0),
IEEE80211_CHANCTX_CHANGE_RX_CHAINS = BIT(1),
IEEE80211_CHANCTX_CHANGE_RADAR = BIT(2),
IEEE80211_CHANCTX_CHANGE_CHANNEL = BIT(3),
IEEE80211_CHANCTX_CHANGE_MIN_WIDTH = BIT(4),
};
/**
* struct ieee80211_chanctx_conf - channel context that vifs may be tuned to
*
* This is the driver-visible part. The ieee80211_chanctx
* that contains it is visible in mac80211 only.
*
* @def: the channel definition
* @min_def: the minimum channel definition currently required.
* @rx_chains_static: The number of RX chains that must always be
* active on the channel to receive MIMO transmissions
* @rx_chains_dynamic: The number of RX chains that must be enabled
* after RTS/CTS handshake to receive SMPS MIMO transmissions;
* this will always be >= @rx_chains_static.
* @radar_enabled: whether radar detection is enabled on this channel.
* @drv_priv: data area for driver use, will always be aligned to
* sizeof(void *), size is determined in hw information.
*/
struct ieee80211_chanctx_conf {
struct cfg80211_chan_def def;
struct cfg80211_chan_def min_def;
u8 rx_chains_static, rx_chains_dynamic;
bool radar_enabled;
u8 drv_priv[0] __aligned(sizeof(void *));
};
/**
* enum ieee80211_chanctx_switch_mode - channel context switch mode
* @CHANCTX_SWMODE_REASSIGN_VIF: Both old and new contexts already
* exist (and will continue to exist), but the virtual interface
* needs to be switched from one to the other.
* @CHANCTX_SWMODE_SWAP_CONTEXTS: The old context exists but will stop
* to exist with this call, the new context doesn't exist but
* will be active after this call, the virtual interface switches
* from the old to the new (note that the driver may of course
* implement this as an on-the-fly chandef switch of the existing
* hardware context, but the mac80211 pointer for the old context
* will cease to exist and only the new one will later be used
* for changes/removal.)
*/
enum ieee80211_chanctx_switch_mode {
CHANCTX_SWMODE_REASSIGN_VIF,
CHANCTX_SWMODE_SWAP_CONTEXTS,
};
/**
* struct ieee80211_vif_chanctx_switch - vif chanctx switch information
*
* This is structure is used to pass information about a vif that
* needs to switch from one chanctx to another. The
* &ieee80211_chanctx_switch_mode defines how the switch should be
* done.
*
* @vif: the vif that should be switched from old_ctx to new_ctx
* @old_ctx: the old context to which the vif was assigned
* @new_ctx: the new context to which the vif must be assigned
*/
struct ieee80211_vif_chanctx_switch {
struct ieee80211_vif *vif;
struct ieee80211_chanctx_conf *old_ctx;
struct ieee80211_chanctx_conf *new_ctx;
};
/**
* enum ieee80211_bss_change - BSS change notification flags
*
* These flags are used with the bss_info_changed() callback
* to indicate which BSS parameter changed.
*
* @BSS_CHANGED_ASSOC: association status changed (associated/disassociated),
* also implies a change in the AID.
* @BSS_CHANGED_ERP_CTS_PROT: CTS protection changed
* @BSS_CHANGED_ERP_PREAMBLE: preamble changed
* @BSS_CHANGED_ERP_SLOT: slot timing changed
* @BSS_CHANGED_HT: 802.11n parameters changed
* @BSS_CHANGED_BASIC_RATES: Basic rateset changed
* @BSS_CHANGED_BEACON_INT: Beacon interval changed
* @BSS_CHANGED_BSSID: BSSID changed, for whatever
* reason (IBSS and managed mode)
* @BSS_CHANGED_BEACON: Beacon data changed, retrieve
* new beacon (beaconing modes)
* @BSS_CHANGED_BEACON_ENABLED: Beaconing should be
* enabled/disabled (beaconing modes)
* @BSS_CHANGED_CQM: Connection quality monitor config changed
* @BSS_CHANGED_IBSS: IBSS join status changed
* @BSS_CHANGED_ARP_FILTER: Hardware ARP filter address list or state changed.
* @BSS_CHANGED_QOS: QoS for this association was enabled/disabled. Note
* that it is only ever disabled for station mode.
* @BSS_CHANGED_IDLE: Idle changed for this BSS/interface.
* @BSS_CHANGED_SSID: SSID changed for this BSS (AP and IBSS mode)
* @BSS_CHANGED_AP_PROBE_RESP: Probe Response changed for this BSS (AP mode)
* @BSS_CHANGED_PS: PS changed for this BSS (STA mode)
* @BSS_CHANGED_TXPOWER: TX power setting changed for this interface
* @BSS_CHANGED_P2P_PS: P2P powersave settings (CTWindow, opportunistic PS)
* changed (currently only in P2P client mode, GO mode will be later)
* @BSS_CHANGED_BEACON_INFO: Data from the AP's beacon became available:
* currently dtim_period only is under consideration.
* @BSS_CHANGED_BANDWIDTH: The bandwidth used by this interface changed,
* note that this is only called when it changes after the channel
* context had been assigned.
*/
enum ieee80211_bss_change {
BSS_CHANGED_ASSOC = 1<<0,
BSS_CHANGED_ERP_CTS_PROT = 1<<1,
BSS_CHANGED_ERP_PREAMBLE = 1<<2,
BSS_CHANGED_ERP_SLOT = 1<<3,
BSS_CHANGED_HT = 1<<4,
BSS_CHANGED_BASIC_RATES = 1<<5,
BSS_CHANGED_BEACON_INT = 1<<6,
BSS_CHANGED_BSSID = 1<<7,
BSS_CHANGED_BEACON = 1<<8,
BSS_CHANGED_BEACON_ENABLED = 1<<9,
BSS_CHANGED_CQM = 1<<10,
BSS_CHANGED_IBSS = 1<<11,
BSS_CHANGED_ARP_FILTER = 1<<12,
BSS_CHANGED_QOS = 1<<13,
BSS_CHANGED_IDLE = 1<<14,
BSS_CHANGED_SSID = 1<<15,
BSS_CHANGED_AP_PROBE_RESP = 1<<16,
BSS_CHANGED_PS = 1<<17,
BSS_CHANGED_TXPOWER = 1<<18,
BSS_CHANGED_P2P_PS = 1<<19,
BSS_CHANGED_BEACON_INFO = 1<<20,
BSS_CHANGED_BANDWIDTH = 1<<21,
/* when adding here, make sure to change ieee80211_reconfig */
};
/*
* The maximum number of IPv4 addresses listed for ARP filtering. If the number
* of addresses for an interface increase beyond this value, hardware ARP
* filtering will be disabled.
*/
#define IEEE80211_BSS_ARP_ADDR_LIST_LEN 4
/**
* enum ieee80211_rssi_event - RSSI threshold event
* An indicator for when RSSI goes below/above a certain threshold.
* @RSSI_EVENT_HIGH: AP's rssi crossed the high threshold set by the driver.
* @RSSI_EVENT_LOW: AP's rssi crossed the low threshold set by the driver.
*/
enum ieee80211_rssi_event {
RSSI_EVENT_HIGH,
RSSI_EVENT_LOW,
};
/**
* struct ieee80211_bss_conf - holds the BSS's changing parameters
*
* This structure keeps information about a BSS (and an association
* to that BSS) that can change during the lifetime of the BSS.
*
* @assoc: association status
* @ibss_joined: indicates whether this station is part of an IBSS
* or not
* @ibss_creator: indicates if a new IBSS network is being created
* @aid: association ID number, valid only when @assoc is true
* @use_cts_prot: use CTS protection
* @use_short_preamble: use 802.11b short preamble;
* if the hardware cannot handle this it must set the
* IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE hardware flag
* @use_short_slot: use short slot time (only relevant for ERP);
* if the hardware cannot handle this it must set the
* IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE hardware flag
* @dtim_period: num of beacons before the next DTIM, for beaconing,
* valid in station mode only if after the driver was notified
* with the %BSS_CHANGED_BEACON_INFO flag, will be non-zero then.
* @sync_tsf: last beacon's/probe response's TSF timestamp (could be old
* as it may have been received during scanning long ago). If the
* HW flag %IEEE80211_HW_TIMING_BEACON_ONLY is set, then this can
* only come from a beacon, but might not become valid until after
* association when a beacon is received (which is notified with the
* %BSS_CHANGED_DTIM flag.)
* @sync_device_ts: the device timestamp corresponding to the sync_tsf,
* the driver/device can use this to calculate synchronisation
* (see @sync_tsf)
* @sync_dtim_count: Only valid when %IEEE80211_HW_TIMING_BEACON_ONLY
* is requested, see @sync_tsf/@sync_device_ts.
* @beacon_int: beacon interval
* @assoc_capability: capabilities taken from assoc resp
* @basic_rates: bitmap of basic rates, each bit stands for an
* index into the rate table configured by the driver in
* the current band.
* @beacon_rate: associated AP's beacon TX rate
* @mcast_rate: per-band multicast rate index + 1 (0: disabled)
* @bssid: The BSSID for this BSS
* @enable_beacon: whether beaconing should be enabled or not
* @chandef: Channel definition for this BSS -- the hardware might be
* configured a higher bandwidth than this BSS uses, for example.
* @ht_operation_mode: HT operation mode like in &struct ieee80211_ht_operation.
* This field is only valid when the channel type is one of the HT types.
* @cqm_rssi_thold: Connection quality monitor RSSI threshold, a zero value
* implies disabled
* @cqm_rssi_hyst: Connection quality monitor RSSI hysteresis
* @arp_addr_list: List of IPv4 addresses for hardware ARP filtering. The
* may filter ARP queries targeted for other addresses than listed here.
* The driver must allow ARP queries targeted for all address listed here
* to pass through. An empty list implies no ARP queries need to pass.
* @arp_addr_cnt: Number of addresses currently on the list. Note that this
* may be larger than %IEEE80211_BSS_ARP_ADDR_LIST_LEN (the arp_addr_list
* array size), it's up to the driver what to do in that case.
* @qos: This is a QoS-enabled BSS.
* @idle: This interface is idle. There's also a global idle flag in the
* hardware config which may be more appropriate depending on what
* your driver/device needs to do.
* @ps: power-save mode (STA only). This flag is NOT affected by
* offchannel/dynamic_ps operations.
* @ssid: The SSID of the current vif. Valid in AP and IBSS mode.
* @ssid_len: Length of SSID given in @ssid.
* @hidden_ssid: The SSID of the current vif is hidden. Only valid in AP-mode.
* @txpower: TX power in dBm
* @p2p_noa_attr: P2P NoA attribute for P2P powersave
*/
struct ieee80211_bss_conf {
const u8 *bssid;
/* association related data */
bool assoc, ibss_joined;
bool ibss_creator;
u16 aid;
/* erp related data */
bool use_cts_prot;
bool use_short_preamble;
bool use_short_slot;
bool enable_beacon;
u8 dtim_period;
u16 beacon_int;
u16 assoc_capability;
u64 sync_tsf;
u32 sync_device_ts;
u8 sync_dtim_count;
u32 basic_rates;
struct ieee80211_rate *beacon_rate;
int mcast_rate[IEEE80211_NUM_BANDS];
u16 ht_operation_mode;
s32 cqm_rssi_thold;
u32 cqm_rssi_hyst;
struct cfg80211_chan_def chandef;
__be32 arp_addr_list[IEEE80211_BSS_ARP_ADDR_LIST_LEN];
int arp_addr_cnt;
bool qos;
bool idle;
bool ps;
u8 ssid[IEEE80211_MAX_SSID_LEN];
size_t ssid_len;
bool hidden_ssid;
int txpower;
struct ieee80211_p2p_noa_attr p2p_noa_attr;
};
/**
* enum mac80211_tx_info_flags - flags to describe transmission information/status
*
* These flags are used with the @flags member of &ieee80211_tx_info.
*
* @IEEE80211_TX_CTL_REQ_TX_STATUS: require TX status callback for this frame.
* @IEEE80211_TX_CTL_ASSIGN_SEQ: The driver has to assign a sequence
* number to this frame, taking care of not overwriting the fragment
* number and increasing the sequence number only when the
* IEEE80211_TX_CTL_FIRST_FRAGMENT flag is set. mac80211 will properly
* assign sequence numbers to QoS-data frames but cannot do so correctly
* for non-QoS-data and management frames because beacons need them from
* that counter as well and mac80211 cannot guarantee proper sequencing.
* If this flag is set, the driver should instruct the hardware to
* assign a sequence number to the frame or assign one itself. Cf. IEEE
* 802.11-2007 7.1.3.4.1 paragraph 3. This flag will always be set for
* beacons and always be clear for frames without a sequence number field.
* @IEEE80211_TX_CTL_NO_ACK: tell the low level not to wait for an ack
* @IEEE80211_TX_CTL_CLEAR_PS_FILT: clear powersave filter for destination
* station
* @IEEE80211_TX_CTL_FIRST_FRAGMENT: this is a first fragment of the frame
* @IEEE80211_TX_CTL_SEND_AFTER_DTIM: send this frame after DTIM beacon
* @IEEE80211_TX_CTL_AMPDU: this frame should be sent as part of an A-MPDU
* @IEEE80211_TX_CTL_INJECTED: Frame was injected, internal to mac80211.
* @IEEE80211_TX_STAT_TX_FILTERED: The frame was not transmitted
* because the destination STA was in powersave mode. Note that to
* avoid race conditions, the filter must be set by the hardware or
* firmware upon receiving a frame that indicates that the station
* went to sleep (must be done on device to filter frames already on
* the queue) and may only be unset after mac80211 gives the OK for
* that by setting the IEEE80211_TX_CTL_CLEAR_PS_FILT (see above),
* since only then is it guaranteed that no more frames are in the
* hardware queue.
* @IEEE80211_TX_STAT_ACK: Frame was acknowledged
* @IEEE80211_TX_STAT_AMPDU: The frame was aggregated, so status
* is for the whole aggregation.
* @IEEE80211_TX_STAT_AMPDU_NO_BACK: no block ack was returned,
* so consider using block ack request (BAR).
* @IEEE80211_TX_CTL_RATE_CTRL_PROBE: internal to mac80211, can be
* set by rate control algorithms to indicate probe rate, will
* be cleared for fragmented frames (except on the last fragment)
* @IEEE80211_TX_INTFL_OFFCHAN_TX_OK: Internal to mac80211. Used to indicate
* that a frame can be transmitted while the queues are stopped for
* off-channel operation.
* @IEEE80211_TX_INTFL_NEED_TXPROCESSING: completely internal to mac80211,
* used to indicate that a pending frame requires TX processing before
* it can be sent out.
* @IEEE80211_TX_INTFL_RETRIED: completely internal to mac80211,
* used to indicate that a frame was already retried due to PS
* @IEEE80211_TX_INTFL_DONT_ENCRYPT: completely internal to mac80211,
* used to indicate frame should not be encrypted
* @IEEE80211_TX_CTL_NO_PS_BUFFER: This frame is a response to a poll
* frame (PS-Poll or uAPSD) or a non-bufferable MMPDU and must
* be sent although the station is in powersave mode.
* @IEEE80211_TX_CTL_MORE_FRAMES: More frames will be passed to the
* transmit function after the current frame, this can be used
* by drivers to kick the DMA queue only if unset or when the
* queue gets full.
* @IEEE80211_TX_INTFL_RETRANSMISSION: This frame is being retransmitted
* after TX status because the destination was asleep, it must not
* be modified again (no seqno assignment, crypto, etc.)
* @IEEE80211_TX_INTFL_MLME_CONN_TX: This frame was transmitted by the MLME
* code for connection establishment, this indicates that its status
* should kick the MLME state machine.
* @IEEE80211_TX_INTFL_NL80211_FRAME_TX: Frame was requested through nl80211
* MLME command (internal to mac80211 to figure out whether to send TX
* status to user space)
* @IEEE80211_TX_CTL_LDPC: tells the driver to use LDPC for this frame
* @IEEE80211_TX_CTL_STBC: Enables Space-Time Block Coding (STBC) for this
* frame and selects the maximum number of streams that it can use.
* @IEEE80211_TX_CTL_TX_OFFCHAN: Marks this packet to be transmitted on
* the off-channel channel when a remain-on-channel offload is done
* in hardware -- normal packets still flow and are expected to be
* handled properly by the device.
* @IEEE80211_TX_INTFL_TKIP_MIC_FAILURE: Marks this packet to be used for TKIP
* testing. It will be sent out with incorrect Michael MIC key to allow
* TKIP countermeasures to be tested.
* @IEEE80211_TX_CTL_NO_CCK_RATE: This frame will be sent at non CCK rate.
* This flag is actually used for management frame especially for P2P
* frames not being sent at CCK rate in 2GHz band.
* @IEEE80211_TX_STATUS_EOSP: This packet marks the end of service period,
* when its status is reported the service period ends. For frames in
* an SP that mac80211 transmits, it is already set; for driver frames
* the driver may set this flag. It is also used to do the same for
* PS-Poll responses.
* @IEEE80211_TX_CTL_USE_MINRATE: This frame will be sent at lowest rate.
* This flag is used to send nullfunc frame at minimum rate when
* the nullfunc is used for connection monitoring purpose.
* @IEEE80211_TX_CTL_DONTFRAG: Don't fragment this packet even if it
* would be fragmented by size (this is optional, only used for
* monitor injection).
* @IEEE80211_TX_CTL_PS_RESPONSE: This frame is a response to a poll
* frame (PS-Poll or uAPSD).
*
* Note: If you have to add new flags to the enumeration, then don't
* forget to update %IEEE80211_TX_TEMPORARY_FLAGS when necessary.
*/
enum mac80211_tx_info_flags {
IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(0),
IEEE80211_TX_CTL_ASSIGN_SEQ = BIT(1),
IEEE80211_TX_CTL_NO_ACK = BIT(2),
IEEE80211_TX_CTL_CLEAR_PS_FILT = BIT(3),
IEEE80211_TX_CTL_FIRST_FRAGMENT = BIT(4),
IEEE80211_TX_CTL_SEND_AFTER_DTIM = BIT(5),
IEEE80211_TX_CTL_AMPDU = BIT(6),
IEEE80211_TX_CTL_INJECTED = BIT(7),
IEEE80211_TX_STAT_TX_FILTERED = BIT(8),
IEEE80211_TX_STAT_ACK = BIT(9),
IEEE80211_TX_STAT_AMPDU = BIT(10),
IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(11),
IEEE80211_TX_CTL_RATE_CTRL_PROBE = BIT(12),
IEEE80211_TX_INTFL_OFFCHAN_TX_OK = BIT(13),
IEEE80211_TX_INTFL_NEED_TXPROCESSING = BIT(14),
IEEE80211_TX_INTFL_RETRIED = BIT(15),
IEEE80211_TX_INTFL_DONT_ENCRYPT = BIT(16),
IEEE80211_TX_CTL_NO_PS_BUFFER = BIT(17),
IEEE80211_TX_CTL_MORE_FRAMES = BIT(18),
IEEE80211_TX_INTFL_RETRANSMISSION = BIT(19),
IEEE80211_TX_INTFL_MLME_CONN_TX = BIT(20),
IEEE80211_TX_INTFL_NL80211_FRAME_TX = BIT(21),
IEEE80211_TX_CTL_LDPC = BIT(22),
IEEE80211_TX_CTL_STBC = BIT(23) | BIT(24),
IEEE80211_TX_CTL_TX_OFFCHAN = BIT(25),
IEEE80211_TX_INTFL_TKIP_MIC_FAILURE = BIT(26),
IEEE80211_TX_CTL_NO_CCK_RATE = BIT(27),
IEEE80211_TX_STATUS_EOSP = BIT(28),
IEEE80211_TX_CTL_USE_MINRATE = BIT(29),
IEEE80211_TX_CTL_DONTFRAG = BIT(30),
IEEE80211_TX_CTL_PS_RESPONSE = BIT(31),
};
#define IEEE80211_TX_CTL_STBC_SHIFT 23
/**
* enum mac80211_tx_control_flags - flags to describe transmit control
*
* @IEEE80211_TX_CTRL_PORT_CTRL_PROTO: this frame is a port control
* protocol frame (e.g. EAP)
*
* These flags are used in tx_info->control.flags.
*/
enum mac80211_tx_control_flags {
IEEE80211_TX_CTRL_PORT_CTRL_PROTO = BIT(0),
};
/*
* This definition is used as a mask to clear all temporary flags, which are
* set by the tx handlers for each transmission attempt by the mac80211 stack.
*/
#define IEEE80211_TX_TEMPORARY_FLAGS (IEEE80211_TX_CTL_NO_ACK | \
IEEE80211_TX_CTL_CLEAR_PS_FILT | IEEE80211_TX_CTL_FIRST_FRAGMENT | \
IEEE80211_TX_CTL_SEND_AFTER_DTIM | IEEE80211_TX_CTL_AMPDU | \
IEEE80211_TX_STAT_TX_FILTERED | IEEE80211_TX_STAT_ACK | \
IEEE80211_TX_STAT_AMPDU | IEEE80211_TX_STAT_AMPDU_NO_BACK | \
IEEE80211_TX_CTL_RATE_CTRL_PROBE | IEEE80211_TX_CTL_NO_PS_BUFFER | \
IEEE80211_TX_CTL_MORE_FRAMES | IEEE80211_TX_CTL_LDPC | \
IEEE80211_TX_CTL_STBC | IEEE80211_TX_STATUS_EOSP)
/**
* enum mac80211_rate_control_flags - per-rate flags set by the
* Rate Control algorithm.
*
* These flags are set by the Rate control algorithm for each rate during tx,
* in the @flags member of struct ieee80211_tx_rate.
*
* @IEEE80211_TX_RC_USE_RTS_CTS: Use RTS/CTS exchange for this rate.
* @IEEE80211_TX_RC_USE_CTS_PROTECT: CTS-to-self protection is required.
* This is set if the current BSS requires ERP protection.
* @IEEE80211_TX_RC_USE_SHORT_PREAMBLE: Use short preamble.
* @IEEE80211_TX_RC_MCS: HT rate.
* @IEEE80211_TX_RC_VHT_MCS: VHT MCS rate, in this case the idx field is split
* into a higher 4 bits (Nss) and lower 4 bits (MCS number)
* @IEEE80211_TX_RC_GREEN_FIELD: Indicates whether this rate should be used in
* Greenfield mode.
* @IEEE80211_TX_RC_40_MHZ_WIDTH: Indicates if the Channel Width should be 40 MHz.
* @IEEE80211_TX_RC_80_MHZ_WIDTH: Indicates 80 MHz transmission
* @IEEE80211_TX_RC_160_MHZ_WIDTH: Indicates 160 MHz transmission
* (80+80 isn't supported yet)
* @IEEE80211_TX_RC_DUP_DATA: The frame should be transmitted on both of the
* adjacent 20 MHz channels, if the current channel type is
* NL80211_CHAN_HT40MINUS or NL80211_CHAN_HT40PLUS.
* @IEEE80211_TX_RC_SHORT_GI: Short Guard interval should be used for this rate.
*/
enum mac80211_rate_control_flags {
IEEE80211_TX_RC_USE_RTS_CTS = BIT(0),
IEEE80211_TX_RC_USE_CTS_PROTECT = BIT(1),
IEEE80211_TX_RC_USE_SHORT_PREAMBLE = BIT(2),
/* rate index is an HT/VHT MCS instead of an index */
IEEE80211_TX_RC_MCS = BIT(3),
IEEE80211_TX_RC_GREEN_FIELD = BIT(4),
IEEE80211_TX_RC_40_MHZ_WIDTH = BIT(5),
IEEE80211_TX_RC_DUP_DATA = BIT(6),
IEEE80211_TX_RC_SHORT_GI = BIT(7),
IEEE80211_TX_RC_VHT_MCS = BIT(8),
IEEE80211_TX_RC_80_MHZ_WIDTH = BIT(9),
IEEE80211_TX_RC_160_MHZ_WIDTH = BIT(10),
};
/* there are 40 bytes if you don't need the rateset to be kept */
#define IEEE80211_TX_INFO_DRIVER_DATA_SIZE 40
/* if you do need the rateset, then you have less space */
#define IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE 24
/* maximum number of rate stages */
#define IEEE80211_TX_MAX_RATES 4
/* maximum number of rate table entries */
#define IEEE80211_TX_RATE_TABLE_SIZE 4
/**
* struct ieee80211_tx_rate - rate selection/status
*
* @idx: rate index to attempt to send with
* @flags: rate control flags (&enum mac80211_rate_control_flags)
* @count: number of tries in this rate before going to the next rate
*
* A value of -1 for @idx indicates an invalid rate and, if used
* in an array of retry rates, that no more rates should be tried.
*
* When used for transmit status reporting, the driver should
* always report the rate along with the flags it used.
*
* &struct ieee80211_tx_info contains an array of these structs
* in the control information, and it will be filled by the rate
* control algorithm according to what should be sent. For example,
* if this array contains, in the format { <idx>, <count> } the
* information
* { 3, 2 }, { 2, 2 }, { 1, 4 }, { -1, 0 }, { -1, 0 }
* then this means that the frame should be transmitted
* up to twice at rate 3, up to twice at rate 2, and up to four
* times at rate 1 if it doesn't get acknowledged. Say it gets
* acknowledged by the peer after the fifth attempt, the status
* information should then contain
* { 3, 2 }, { 2, 2 }, { 1, 1 }, { -1, 0 } ...
* since it was transmitted twice at rate 3, twice at rate 2
* and once at rate 1 after which we received an acknowledgement.
*/
struct ieee80211_tx_rate {
s8 idx;
u16 count:5,
flags:11;
} __packed;
#define IEEE80211_MAX_TX_RETRY 31
static inline void ieee80211_rate_set_vht(struct ieee80211_tx_rate *rate,
u8 mcs, u8 nss)
{
WARN_ON(mcs & ~0xF);
WARN_ON((nss - 1) & ~0x7);
rate->idx = ((nss - 1) << 4) | mcs;
}
static inline u8
ieee80211_rate_get_vht_mcs(const struct ieee80211_tx_rate *rate)
{
return rate->idx & 0xF;
}
static inline u8
ieee80211_rate_get_vht_nss(const struct ieee80211_tx_rate *rate)
{
return (rate->idx >> 4) + 1;
}
/**
* struct ieee80211_tx_info - skb transmit information
*
* This structure is placed in skb->cb for three uses:
* (1) mac80211 TX control - mac80211 tells the driver what to do
* (2) driver internal use (if applicable)
* (3) TX status information - driver tells mac80211 what happened
*
* @flags: transmit info flags, defined above
* @band: the band to transmit on (use for checking for races)
* @hw_queue: HW queue to put the frame on, skb_get_queue_mapping() gives the AC
* @ack_frame_id: internal frame ID for TX status, used internally
* @control: union for control data
* @status: union for status data
* @driver_data: array of driver_data pointers
* @ampdu_ack_len: number of acked aggregated frames.
* relevant only if IEEE80211_TX_STAT_AMPDU was set.
* @ampdu_len: number of aggregated frames.
* relevant only if IEEE80211_TX_STAT_AMPDU was set.
* @ack_signal: signal strength of the ACK frame
*/
struct ieee80211_tx_info {
/* common information */
u32 flags;
u8 band;
u8 hw_queue;
u16 ack_frame_id;
union {
struct {
union {
/* rate control */
struct {
struct ieee80211_tx_rate rates[
IEEE80211_TX_MAX_RATES];
s8 rts_cts_rate_idx;
u8 use_rts:1;
u8 use_cts_prot:1;
u8 short_preamble:1;
u8 skip_table:1;
/* 2 bytes free */
};
/* only needed before rate control */
unsigned long jiffies;
};
/* NB: vif can be NULL for injected frames */
struct ieee80211_vif *vif;
struct ieee80211_key_conf *hw_key;
u32 flags;
/* 4 bytes free */
} control;
struct {
struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES];
s32 ack_signal;
u8 ampdu_ack_len;
u8 ampdu_len;
u8 antenna;
void *status_driver_data[21 / sizeof(void *)];
} status;
struct {
struct ieee80211_tx_rate driver_rates[
IEEE80211_TX_MAX_RATES];
u8 pad[4];
void *rate_driver_data[
IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE / sizeof(void *)];
};
void *driver_data[
IEEE80211_TX_INFO_DRIVER_DATA_SIZE / sizeof(void *)];
};
};
/**
* struct ieee80211_sched_scan_ies - scheduled scan IEs
*
* This structure is used to pass the appropriate IEs to be used in scheduled
* scans for all bands. It contains both the IEs passed from the userspace
* and the ones generated by mac80211.
*
* @ie: array with the IEs for each supported band
* @len: array with the total length of the IEs for each band
*/
struct ieee80211_sched_scan_ies {
u8 *ie[IEEE80211_NUM_BANDS];
size_t len[IEEE80211_NUM_BANDS];
};
static inline struct ieee80211_tx_info *IEEE80211_SKB_CB(struct sk_buff *skb)
{
return (struct ieee80211_tx_info *)skb->cb;
}
static inline struct ieee80211_rx_status *IEEE80211_SKB_RXCB(struct sk_buff *skb)
{
return (struct ieee80211_rx_status *)skb->cb;
}
/**
* ieee80211_tx_info_clear_status - clear TX status
*
* @info: The &struct ieee80211_tx_info to be cleared.
*
* When the driver passes an skb back to mac80211, it must report
* a number of things in TX status. This function clears everything
* in the TX status but the rate control information (it does clear
* the count since you need to fill that in anyway).
*
* NOTE: You can only use this function if you do NOT use
* info->driver_data! Use info->rate_driver_data
* instead if you need only the less space that allows.
*/
static inline void
ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info)
{
int i;
BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) !=
offsetof(struct ieee80211_tx_info, control.rates));
BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) !=
offsetof(struct ieee80211_tx_info, driver_rates));
BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 8);
/* clear the rate counts */
for (i = 0; i < IEEE80211_TX_MAX_RATES; i++)
info->status.rates[i].count = 0;
BUILD_BUG_ON(
offsetof(struct ieee80211_tx_info, status.ack_signal) != 20);
memset(&info->status.ampdu_ack_len, 0,
sizeof(struct ieee80211_tx_info) -
offsetof(struct ieee80211_tx_info, status.ampdu_ack_len));
}
/**
* enum mac80211_rx_flags - receive flags
*
* These flags are used with the @flag member of &struct ieee80211_rx_status.
* @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame.
* Use together with %RX_FLAG_MMIC_STRIPPED.
* @RX_FLAG_DECRYPTED: This frame was decrypted in hardware.
* @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame,
* verification has been done by the hardware.
* @RX_FLAG_IV_STRIPPED: The IV/ICV are stripped from this frame.
* If this flag is set, the stack cannot do any replay detection
* hence the driver or hardware will have to do that.
* @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on
* the frame.
* @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on
* the frame.
* @RX_FLAG_MACTIME_START: The timestamp passed in the RX status (@mactime
* field) is valid and contains the time the first symbol of the MPDU
* was received. This is useful in monitor mode and for proper IBSS
* merging.
* @RX_FLAG_MACTIME_END: The timestamp passed in the RX status (@mactime
* field) is valid and contains the time the last symbol of the MPDU
* (including FCS) was received.
* @RX_FLAG_SHORTPRE: Short preamble was used for this frame
* @RX_FLAG_HT: HT MCS was used and rate_idx is MCS index
* @RX_FLAG_VHT: VHT MCS was used and rate_index is MCS index
* @RX_FLAG_40MHZ: HT40 (40 MHz) was used
* @RX_FLAG_SHORT_GI: Short guard interval was used
* @RX_FLAG_NO_SIGNAL_VAL: The signal strength value is not present.
* Valid only for data frames (mainly A-MPDU)
* @RX_FLAG_HT_GF: This frame was received in a HT-greenfield transmission, if
* the driver fills this value it should add %IEEE80211_RADIOTAP_MCS_HAVE_FMT
* to hw.radiotap_mcs_details to advertise that fact
* @RX_FLAG_AMPDU_DETAILS: A-MPDU details are known, in particular the reference
* number (@ampdu_reference) must be populated and be a distinct number for
* each A-MPDU
* @RX_FLAG_AMPDU_REPORT_ZEROLEN: driver reports 0-length subframes
* @RX_FLAG_AMPDU_IS_ZEROLEN: This is a zero-length subframe, for
* monitoring purposes only
* @RX_FLAG_AMPDU_LAST_KNOWN: last subframe is known, should be set on all
* subframes of a single A-MPDU
* @RX_FLAG_AMPDU_IS_LAST: this subframe is the last subframe of the A-MPDU
* @RX_FLAG_AMPDU_DELIM_CRC_ERROR: A delimiter CRC error has been detected
* on this subframe
* @RX_FLAG_AMPDU_DELIM_CRC_KNOWN: The delimiter CRC field is known (the CRC
* is stored in the @ampdu_delimiter_crc field)
* @RX_FLAG_LDPC: LDPC was used
* @RX_FLAG_STBC_MASK: STBC 2 bit bitmask. 1 - Nss=1, 2 - Nss=2, 3 - Nss=3
* @RX_FLAG_10MHZ: 10 MHz (half channel) was used
* @RX_FLAG_5MHZ: 5 MHz (quarter channel) was used
* @RX_FLAG_AMSDU_MORE: Some drivers may prefer to report separate A-MSDU
* subframes instead of a one huge frame for performance reasons.
* All, but the last MSDU from an A-MSDU should have this flag set. E.g.
* if an A-MSDU has 3 frames, the first 2 must have the flag set, while
* the 3rd (last) one must not have this flag set. The flag is used to
* deal with retransmission/duplication recovery properly since A-MSDU
* subframes share the same sequence number. Reported subframes can be
* either regular MSDU or singly A-MSDUs. Subframes must not be
* interleaved with other frames.
*/
enum mac80211_rx_flags {
RX_FLAG_MMIC_ERROR = BIT(0),
RX_FLAG_DECRYPTED = BIT(1),
RX_FLAG_MMIC_STRIPPED = BIT(3),
RX_FLAG_IV_STRIPPED = BIT(4),
RX_FLAG_FAILED_FCS_CRC = BIT(5),
RX_FLAG_FAILED_PLCP_CRC = BIT(6),
RX_FLAG_MACTIME_START = BIT(7),
RX_FLAG_SHORTPRE = BIT(8),
RX_FLAG_HT = BIT(9),
RX_FLAG_40MHZ = BIT(10),
RX_FLAG_SHORT_GI = BIT(11),
RX_FLAG_NO_SIGNAL_VAL = BIT(12),
RX_FLAG_HT_GF = BIT(13),
RX_FLAG_AMPDU_DETAILS = BIT(14),
RX_FLAG_AMPDU_REPORT_ZEROLEN = BIT(15),
RX_FLAG_AMPDU_IS_ZEROLEN = BIT(16),
RX_FLAG_AMPDU_LAST_KNOWN = BIT(17),
RX_FLAG_AMPDU_IS_LAST = BIT(18),
RX_FLAG_AMPDU_DELIM_CRC_ERROR = BIT(19),
RX_FLAG_AMPDU_DELIM_CRC_KNOWN = BIT(20),
RX_FLAG_MACTIME_END = BIT(21),
RX_FLAG_VHT = BIT(22),
RX_FLAG_LDPC = BIT(23),
RX_FLAG_STBC_MASK = BIT(26) | BIT(27),
RX_FLAG_10MHZ = BIT(28),
RX_FLAG_5MHZ = BIT(29),
RX_FLAG_AMSDU_MORE = BIT(30),
};
#define RX_FLAG_STBC_SHIFT 26
/**
* enum mac80211_rx_vht_flags - receive VHT flags
*
* These flags are used with the @vht_flag member of
* &struct ieee80211_rx_status.
* @RX_VHT_FLAG_80MHZ: 80 MHz was used
* @RX_VHT_FLAG_80P80MHZ: 80+80 MHz was used
* @RX_VHT_FLAG_160MHZ: 160 MHz was used
* @RX_VHT_FLAG_BF: packet was beamformed
*/
enum mac80211_rx_vht_flags {
RX_VHT_FLAG_80MHZ = BIT(0),
RX_VHT_FLAG_80P80MHZ = BIT(1),
RX_VHT_FLAG_160MHZ = BIT(2),
RX_VHT_FLAG_BF = BIT(3),
};
/**
* struct ieee80211_rx_status - receive status
*
* The low-level driver should provide this information (the subset
* supported by hardware) to the 802.11 code with each received
* frame, in the skb's control buffer (cb).
*
* @mactime: value in microseconds of the 64-bit Time Synchronization Function
* (TSF) timer when the first data symbol (MPDU) arrived at the hardware.
* @device_timestamp: arbitrary timestamp for the device, mac80211 doesn't use
* it but can store it and pass it back to the driver for synchronisation
* @band: the active band when this frame was received
* @freq: frequency the radio was tuned to when receiving this frame, in MHz
* @signal: signal strength when receiving this frame, either in dBm, in dB or
* unspecified depending on the hardware capabilities flags
* @IEEE80211_HW_SIGNAL_*
* @chains: bitmask of receive chains for which separate signal strength
* values were filled.
* @chain_signal: per-chain signal strength, in dBm (unlike @signal, doesn't
* support dB or unspecified units)
* @antenna: antenna used
* @rate_idx: index of data rate into band's supported rates or MCS index if
* HT or VHT is used (%RX_FLAG_HT/%RX_FLAG_VHT)
* @vht_nss: number of streams (VHT only)
* @flag: %RX_FLAG_*
* @vht_flag: %RX_VHT_FLAG_*
* @rx_flags: internal RX flags for mac80211
* @ampdu_reference: A-MPDU reference number, must be a different value for
* each A-MPDU but the same for each subframe within one A-MPDU
* @ampdu_delimiter_crc: A-MPDU delimiter CRC
*/
struct ieee80211_rx_status {
u64 mactime;
u32 device_timestamp;
u32 ampdu_reference;
u32 flag;
u16 freq;
u8 vht_flag;
u8 rate_idx;
u8 vht_nss;
u8 rx_flags;
u8 band;
u8 antenna;
s8 signal;
u8 chains;
s8 chain_signal[IEEE80211_MAX_CHAINS];
u8 ampdu_delimiter_crc;
};
/**
* enum ieee80211_conf_flags - configuration flags
*
* Flags to define PHY configuration options
*
* @IEEE80211_CONF_MONITOR: there's a monitor interface present -- use this
* to determine for example whether to calculate timestamps for packets
* or not, do not use instead of filter flags!
* @IEEE80211_CONF_PS: Enable 802.11 power save mode (managed mode only).
* This is the power save mode defined by IEEE 802.11-2007 section 11.2,
* meaning that the hardware still wakes up for beacons, is able to
* transmit frames and receive the possible acknowledgment frames.
* Not to be confused with hardware specific wakeup/sleep states,
* driver is responsible for that. See the section "Powersave support"
* for more.
* @IEEE80211_CONF_IDLE: The device is running, but idle; if the flag is set
* the driver should be prepared to handle configuration requests but
* may turn the device off as much as possible. Typically, this flag will
* be set when an interface is set UP but not associated or scanning, but
* it can also be unset in that case when monitor interfaces are active.
* @IEEE80211_CONF_OFFCHANNEL: The device is currently not on its main
* operating channel.
*/
enum ieee80211_conf_flags {
IEEE80211_CONF_MONITOR = (1<<0),
IEEE80211_CONF_PS = (1<<1),