forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathcfg80211.h
7510 lines (6974 loc) · 265 KB
/
cfg80211.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
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __NET_CFG80211_H
#define __NET_CFG80211_H
/*
* 802.11 device and configuration interface
*
* Copyright 2006-2010 Johannes Berg <[email protected]>
* Copyright 2013-2014 Intel Mobile Communications GmbH
* Copyright 2015-2017 Intel Deutschland GmbH
* Copyright (C) 2018-2019 Intel Corporation
*/
#include <linux/netdevice.h>
#include <linux/debugfs.h>
#include <linux/list.h>
#include <linux/bug.h>
#include <linux/netlink.h>
#include <linux/skbuff.h>
#include <linux/nl80211.h>
#include <linux/if_ether.h>
#include <linux/ieee80211.h>
#include <linux/net.h>
#include <net/regulatory.h>
/**
* DOC: Introduction
*
* cfg80211 is the configuration API for 802.11 devices in Linux. It bridges
* userspace and drivers, and offers some utility functionality associated
* with 802.11. cfg80211 must, directly or indirectly via mac80211, be used
* by all modern wireless drivers in Linux, so that they offer a consistent
* API through nl80211. For backward compatibility, cfg80211 also offers
* wireless extensions to userspace, but hides them from drivers completely.
*
* Additionally, cfg80211 contains code to help enforce regulatory spectrum
* use restrictions.
*/
/**
* DOC: Device registration
*
* In order for a driver to use cfg80211, it must register the hardware device
* with cfg80211. This happens through a number of hardware capability structs
* described below.
*
* The fundamental structure for each device is the 'wiphy', of which each
* instance describes a physical wireless device connected to the system. Each
* such wiphy can have zero, one, or many virtual interfaces associated with
* it, which need to be identified as such by pointing the network interface's
* @ieee80211_ptr pointer to a &struct wireless_dev which further describes
* the wireless part of the interface, normally this struct is embedded in the
* network interface's private data area. Drivers can optionally allow creating
* or destroying virtual interfaces on the fly, but without at least one or the
* ability to create some the wireless device isn't useful.
*
* Each wiphy structure contains device capability information, and also has
* a pointer to the various operations the driver offers. The definitions and
* structures here describe these capabilities in detail.
*/
struct wiphy;
/*
* wireless hardware capability structures
*/
/**
* enum ieee80211_channel_flags - channel flags
*
* Channel flags set by the regulatory control code.
*
* @IEEE80211_CHAN_DISABLED: This channel is disabled.
* @IEEE80211_CHAN_NO_IR: do not initiate radiation, this includes
* sending probe requests or beaconing.
* @IEEE80211_CHAN_RADAR: Radar detection is required on this channel.
* @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel
* is not permitted.
* @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel
* is not permitted.
* @IEEE80211_CHAN_NO_OFDM: OFDM is not allowed on this channel.
* @IEEE80211_CHAN_NO_80MHZ: If the driver supports 80 MHz on the band,
* this flag indicates that an 80 MHz channel cannot use this
* channel as the control or any of the secondary channels.
* This may be due to the driver or due to regulatory bandwidth
* restrictions.
* @IEEE80211_CHAN_NO_160MHZ: If the driver supports 160 MHz on the band,
* this flag indicates that an 160 MHz channel cannot use this
* channel as the control or any of the secondary channels.
* This may be due to the driver or due to regulatory bandwidth
* restrictions.
* @IEEE80211_CHAN_INDOOR_ONLY: see %NL80211_FREQUENCY_ATTR_INDOOR_ONLY
* @IEEE80211_CHAN_IR_CONCURRENT: see %NL80211_FREQUENCY_ATTR_IR_CONCURRENT
* @IEEE80211_CHAN_NO_20MHZ: 20 MHz bandwidth is not permitted
* on this channel.
* @IEEE80211_CHAN_NO_10MHZ: 10 MHz bandwidth is not permitted
* on this channel.
*
*/
enum ieee80211_channel_flags {
IEEE80211_CHAN_DISABLED = 1<<0,
IEEE80211_CHAN_NO_IR = 1<<1,
/* hole at 1<<2 */
IEEE80211_CHAN_RADAR = 1<<3,
IEEE80211_CHAN_NO_HT40PLUS = 1<<4,
IEEE80211_CHAN_NO_HT40MINUS = 1<<5,
IEEE80211_CHAN_NO_OFDM = 1<<6,
IEEE80211_CHAN_NO_80MHZ = 1<<7,
IEEE80211_CHAN_NO_160MHZ = 1<<8,
IEEE80211_CHAN_INDOOR_ONLY = 1<<9,
IEEE80211_CHAN_IR_CONCURRENT = 1<<10,
IEEE80211_CHAN_NO_20MHZ = 1<<11,
IEEE80211_CHAN_NO_10MHZ = 1<<12,
};
#define IEEE80211_CHAN_NO_HT40 \
(IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS)
#define IEEE80211_DFS_MIN_CAC_TIME_MS 60000
#define IEEE80211_DFS_MIN_NOP_TIME_MS (30 * 60 * 1000)
/**
* struct ieee80211_channel - channel definition
*
* This structure describes a single channel for use
* with cfg80211.
*
* @center_freq: center frequency in MHz
* @hw_value: hardware-specific value for the channel
* @flags: channel flags from &enum ieee80211_channel_flags.
* @orig_flags: channel flags at registration time, used by regulatory
* code to support devices with additional restrictions
* @band: band this channel belongs to.
* @max_antenna_gain: maximum antenna gain in dBi
* @max_power: maximum transmission power (in dBm)
* @max_reg_power: maximum regulatory transmission power (in dBm)
* @beacon_found: helper to regulatory code to indicate when a beacon
* has been found on this channel. Use regulatory_hint_found_beacon()
* to enable this, this is useful only on 5 GHz band.
* @orig_mag: internal use
* @orig_mpwr: internal use
* @dfs_state: current state of this channel. Only relevant if radar is required
* on this channel.
* @dfs_state_entered: timestamp (jiffies) when the dfs state was entered.
* @dfs_cac_ms: DFS CAC time in milliseconds, this is valid for DFS channels.
*/
struct ieee80211_channel {
enum nl80211_band band;
u32 center_freq;
u16 hw_value;
u32 flags;
int max_antenna_gain;
int max_power;
int max_reg_power;
bool beacon_found;
u32 orig_flags;
int orig_mag, orig_mpwr;
enum nl80211_dfs_state dfs_state;
unsigned long dfs_state_entered;
unsigned int dfs_cac_ms;
};
/**
* enum ieee80211_rate_flags - rate flags
*
* Hardware/specification flags for rates. These are structured
* in a way that allows using the same bitrate structure for
* different bands/PHY modes.
*
* @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short
* preamble on this bitrate; only relevant in 2.4GHz band and
* with CCK rates.
* @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate
* when used with 802.11a (on the 5 GHz band); filled by the
* core code when registering the wiphy.
* @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate
* when used with 802.11b (on the 2.4 GHz band); filled by the
* core code when registering the wiphy.
* @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate
* when used with 802.11g (on the 2.4 GHz band); filled by the
* core code when registering the wiphy.
* @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode.
* @IEEE80211_RATE_SUPPORTS_5MHZ: Rate can be used in 5 MHz mode
* @IEEE80211_RATE_SUPPORTS_10MHZ: Rate can be used in 10 MHz mode
*/
enum ieee80211_rate_flags {
IEEE80211_RATE_SHORT_PREAMBLE = 1<<0,
IEEE80211_RATE_MANDATORY_A = 1<<1,
IEEE80211_RATE_MANDATORY_B = 1<<2,
IEEE80211_RATE_MANDATORY_G = 1<<3,
IEEE80211_RATE_ERP_G = 1<<4,
IEEE80211_RATE_SUPPORTS_5MHZ = 1<<5,
IEEE80211_RATE_SUPPORTS_10MHZ = 1<<6,
};
/**
* enum ieee80211_bss_type - BSS type filter
*
* @IEEE80211_BSS_TYPE_ESS: Infrastructure BSS
* @IEEE80211_BSS_TYPE_PBSS: Personal BSS
* @IEEE80211_BSS_TYPE_IBSS: Independent BSS
* @IEEE80211_BSS_TYPE_MBSS: Mesh BSS
* @IEEE80211_BSS_TYPE_ANY: Wildcard value for matching any BSS type
*/
enum ieee80211_bss_type {
IEEE80211_BSS_TYPE_ESS,
IEEE80211_BSS_TYPE_PBSS,
IEEE80211_BSS_TYPE_IBSS,
IEEE80211_BSS_TYPE_MBSS,
IEEE80211_BSS_TYPE_ANY
};
/**
* enum ieee80211_privacy - BSS privacy filter
*
* @IEEE80211_PRIVACY_ON: privacy bit set
* @IEEE80211_PRIVACY_OFF: privacy bit clear
* @IEEE80211_PRIVACY_ANY: Wildcard value for matching any privacy setting
*/
enum ieee80211_privacy {
IEEE80211_PRIVACY_ON,
IEEE80211_PRIVACY_OFF,
IEEE80211_PRIVACY_ANY
};
#define IEEE80211_PRIVACY(x) \
((x) ? IEEE80211_PRIVACY_ON : IEEE80211_PRIVACY_OFF)
/**
* struct ieee80211_rate - bitrate definition
*
* This structure describes a bitrate that an 802.11 PHY can
* operate with. The two values @hw_value and @hw_value_short
* are only for driver use when pointers to this structure are
* passed around.
*
* @flags: rate-specific flags
* @bitrate: bitrate in units of 100 Kbps
* @hw_value: driver/hardware value for this rate
* @hw_value_short: driver/hardware value for this rate when
* short preamble is used
*/
struct ieee80211_rate {
u32 flags;
u16 bitrate;
u16 hw_value, hw_value_short;
};
/**
* struct ieee80211_he_obss_pd - AP settings for spatial reuse
*
* @enable: is the feature enabled.
* @min_offset: minimal tx power offset an associated station shall use
* @max_offset: maximum tx power offset an associated station shall use
*/
struct ieee80211_he_obss_pd {
bool enable;
u8 min_offset;
u8 max_offset;
};
/**
* struct ieee80211_sta_ht_cap - STA's HT capabilities
*
* This structure describes most essential parameters needed
* to describe 802.11n HT capabilities for an STA.
*
* @ht_supported: is HT supported by the STA
* @cap: HT capabilities map as described in 802.11n spec
* @ampdu_factor: Maximum A-MPDU length factor
* @ampdu_density: Minimum A-MPDU spacing
* @mcs: Supported MCS rates
*/
struct ieee80211_sta_ht_cap {
u16 cap; /* use IEEE80211_HT_CAP_ */
bool ht_supported;
u8 ampdu_factor;
u8 ampdu_density;
struct ieee80211_mcs_info mcs;
};
/**
* struct ieee80211_sta_vht_cap - STA's VHT capabilities
*
* This structure describes most essential parameters needed
* to describe 802.11ac VHT capabilities for an STA.
*
* @vht_supported: is VHT supported by the STA
* @cap: VHT capabilities map as described in 802.11ac spec
* @vht_mcs: Supported VHT MCS rates
*/
struct ieee80211_sta_vht_cap {
bool vht_supported;
u32 cap; /* use IEEE80211_VHT_CAP_ */
struct ieee80211_vht_mcs_info vht_mcs;
};
#define IEEE80211_HE_PPE_THRES_MAX_LEN 25
/**
* struct ieee80211_sta_he_cap - STA's HE capabilities
*
* This structure describes most essential parameters needed
* to describe 802.11ax HE capabilities for a STA.
*
* @has_he: true iff HE data is valid.
* @he_cap_elem: Fixed portion of the HE capabilities element.
* @he_mcs_nss_supp: The supported NSS/MCS combinations.
* @ppe_thres: Holds the PPE Thresholds data.
*/
struct ieee80211_sta_he_cap {
bool has_he;
struct ieee80211_he_cap_elem he_cap_elem;
struct ieee80211_he_mcs_nss_supp he_mcs_nss_supp;
u8 ppe_thres[IEEE80211_HE_PPE_THRES_MAX_LEN];
};
/**
* struct ieee80211_sband_iftype_data
*
* This structure encapsulates sband data that is relevant for the
* interface types defined in @types_mask. Each type in the
* @types_mask must be unique across all instances of iftype_data.
*
* @types_mask: interface types mask
* @he_cap: holds the HE capabilities
*/
struct ieee80211_sband_iftype_data {
u16 types_mask;
struct ieee80211_sta_he_cap he_cap;
};
/**
* enum ieee80211_edmg_bw_config - allowed channel bandwidth configurations
*
* @IEEE80211_EDMG_BW_CONFIG_4: 2.16GHz
* @IEEE80211_EDMG_BW_CONFIG_5: 2.16GHz and 4.32GHz
* @IEEE80211_EDMG_BW_CONFIG_6: 2.16GHz, 4.32GHz and 6.48GHz
* @IEEE80211_EDMG_BW_CONFIG_7: 2.16GHz, 4.32GHz, 6.48GHz and 8.64GHz
* @IEEE80211_EDMG_BW_CONFIG_8: 2.16GHz and 2.16GHz + 2.16GHz
* @IEEE80211_EDMG_BW_CONFIG_9: 2.16GHz, 4.32GHz and 2.16GHz + 2.16GHz
* @IEEE80211_EDMG_BW_CONFIG_10: 2.16GHz, 4.32GHz, 6.48GHz and 2.16GHz+2.16GHz
* @IEEE80211_EDMG_BW_CONFIG_11: 2.16GHz, 4.32GHz, 6.48GHz, 8.64GHz and
* 2.16GHz+2.16GHz
* @IEEE80211_EDMG_BW_CONFIG_12: 2.16GHz, 2.16GHz + 2.16GHz and
* 4.32GHz + 4.32GHz
* @IEEE80211_EDMG_BW_CONFIG_13: 2.16GHz, 4.32GHz, 2.16GHz + 2.16GHz and
* 4.32GHz + 4.32GHz
* @IEEE80211_EDMG_BW_CONFIG_14: 2.16GHz, 4.32GHz, 6.48GHz, 2.16GHz + 2.16GHz
* and 4.32GHz + 4.32GHz
* @IEEE80211_EDMG_BW_CONFIG_15: 2.16GHz, 4.32GHz, 6.48GHz, 8.64GHz,
* 2.16GHz + 2.16GHz and 4.32GHz + 4.32GHz
*/
enum ieee80211_edmg_bw_config {
IEEE80211_EDMG_BW_CONFIG_4 = 4,
IEEE80211_EDMG_BW_CONFIG_5 = 5,
IEEE80211_EDMG_BW_CONFIG_6 = 6,
IEEE80211_EDMG_BW_CONFIG_7 = 7,
IEEE80211_EDMG_BW_CONFIG_8 = 8,
IEEE80211_EDMG_BW_CONFIG_9 = 9,
IEEE80211_EDMG_BW_CONFIG_10 = 10,
IEEE80211_EDMG_BW_CONFIG_11 = 11,
IEEE80211_EDMG_BW_CONFIG_12 = 12,
IEEE80211_EDMG_BW_CONFIG_13 = 13,
IEEE80211_EDMG_BW_CONFIG_14 = 14,
IEEE80211_EDMG_BW_CONFIG_15 = 15,
};
/**
* struct ieee80211_edmg - EDMG configuration
*
* This structure describes most essential parameters needed
* to describe 802.11ay EDMG configuration
*
* @channels: bitmap that indicates the 2.16 GHz channel(s)
* that are allowed to be used for transmissions.
* Bit 0 indicates channel 1, bit 1 indicates channel 2, etc.
* Set to 0 indicate EDMG not supported.
* @bw_config: Channel BW Configuration subfield encodes
* the allowed channel bandwidth configurations
*/
struct ieee80211_edmg {
u8 channels;
enum ieee80211_edmg_bw_config bw_config;
};
/**
* struct ieee80211_supported_band - frequency band definition
*
* This structure describes a frequency band a wiphy
* is able to operate in.
*
* @channels: Array of channels the hardware can operate in
* in this band.
* @band: the band this structure represents
* @n_channels: Number of channels in @channels
* @bitrates: Array of bitrates the hardware can operate with
* in this band. Must be sorted to give a valid "supported
* rates" IE, i.e. CCK rates first, then OFDM.
* @n_bitrates: Number of bitrates in @bitrates
* @ht_cap: HT capabilities in this band
* @vht_cap: VHT capabilities in this band
* @edmg_cap: EDMG capabilities in this band
* @n_iftype_data: number of iftype data entries
* @iftype_data: interface type data entries. Note that the bits in
* @types_mask inside this structure cannot overlap (i.e. only
* one occurrence of each type is allowed across all instances of
* iftype_data).
*/
struct ieee80211_supported_band {
struct ieee80211_channel *channels;
struct ieee80211_rate *bitrates;
enum nl80211_band band;
int n_channels;
int n_bitrates;
struct ieee80211_sta_ht_cap ht_cap;
struct ieee80211_sta_vht_cap vht_cap;
struct ieee80211_edmg edmg_cap;
u16 n_iftype_data;
const struct ieee80211_sband_iftype_data *iftype_data;
};
/**
* ieee80211_get_sband_iftype_data - return sband data for a given iftype
* @sband: the sband to search for the STA on
* @iftype: enum nl80211_iftype
*
* Return: pointer to struct ieee80211_sband_iftype_data, or NULL is none found
*/
static inline const struct ieee80211_sband_iftype_data *
ieee80211_get_sband_iftype_data(const struct ieee80211_supported_band *sband,
u8 iftype)
{
int i;
if (WARN_ON(iftype >= NL80211_IFTYPE_MAX))
return NULL;
for (i = 0; i < sband->n_iftype_data; i++) {
const struct ieee80211_sband_iftype_data *data =
&sband->iftype_data[i];
if (data->types_mask & BIT(iftype))
return data;
}
return NULL;
}
/**
* ieee80211_get_he_iftype_cap - return HE capabilities for an sband's iftype
* @sband: the sband to search for the iftype on
* @iftype: enum nl80211_iftype
*
* Return: pointer to the struct ieee80211_sta_he_cap, or NULL is none found
*/
static inline const struct ieee80211_sta_he_cap *
ieee80211_get_he_iftype_cap(const struct ieee80211_supported_band *sband,
u8 iftype)
{
const struct ieee80211_sband_iftype_data *data =
ieee80211_get_sband_iftype_data(sband, iftype);
if (data && data->he_cap.has_he)
return &data->he_cap;
return NULL;
}
/**
* ieee80211_get_he_sta_cap - return HE capabilities for an sband's STA
* @sband: the sband to search for the STA on
*
* Return: pointer to the struct ieee80211_sta_he_cap, or NULL is none found
*/
static inline const struct ieee80211_sta_he_cap *
ieee80211_get_he_sta_cap(const struct ieee80211_supported_band *sband)
{
return ieee80211_get_he_iftype_cap(sband, NL80211_IFTYPE_STATION);
}
/**
* wiphy_read_of_freq_limits - read frequency limits from device tree
*
* @wiphy: the wireless device to get extra limits for
*
* Some devices may have extra limitations specified in DT. This may be useful
* for chipsets that normally support more bands but are limited due to board
* design (e.g. by antennas or external power amplifier).
*
* This function reads info from DT and uses it to *modify* channels (disable
* unavailable ones). It's usually a *bad* idea to use it in drivers with
* shared channel data as DT limitations are device specific. You should make
* sure to call it only if channels in wiphy are copied and can be modified
* without affecting other devices.
*
* As this function access device node it has to be called after set_wiphy_dev.
* It also modifies channels so they have to be set first.
* If using this helper, call it before wiphy_register().
*/
#ifdef CONFIG_OF
void wiphy_read_of_freq_limits(struct wiphy *wiphy);
#else /* CONFIG_OF */
static inline void wiphy_read_of_freq_limits(struct wiphy *wiphy)
{
}
#endif /* !CONFIG_OF */
/*
* Wireless hardware/device configuration structures and methods
*/
/**
* DOC: Actions and configuration
*
* Each wireless device and each virtual interface offer a set of configuration
* operations and other actions that are invoked by userspace. Each of these
* actions is described in the operations structure, and the parameters these
* operations use are described separately.
*
* Additionally, some operations are asynchronous and expect to get status
* information via some functions that drivers need to call.
*
* Scanning and BSS list handling with its associated functionality is described
* in a separate chapter.
*/
#define VHT_MUMIMO_GROUPS_DATA_LEN (WLAN_MEMBERSHIP_LEN +\
WLAN_USER_POSITION_LEN)
/**
* struct vif_params - describes virtual interface parameters
* @flags: monitor interface flags, unchanged if 0, otherwise
* %MONITOR_FLAG_CHANGED will be set
* @use_4addr: use 4-address frames
* @macaddr: address to use for this virtual interface.
* If this parameter is set to zero address the driver may
* determine the address as needed.
* This feature is only fully supported by drivers that enable the
* %NL80211_FEATURE_MAC_ON_CREATE flag. Others may support creating
** only p2p devices with specified MAC.
* @vht_mumimo_groups: MU-MIMO groupID, used for monitoring MU-MIMO packets
* belonging to that MU-MIMO groupID; %NULL if not changed
* @vht_mumimo_follow_addr: MU-MIMO follow address, used for monitoring
* MU-MIMO packets going to the specified station; %NULL if not changed
*/
struct vif_params {
u32 flags;
int use_4addr;
u8 macaddr[ETH_ALEN];
const u8 *vht_mumimo_groups;
const u8 *vht_mumimo_follow_addr;
};
/**
* struct key_params - key information
*
* Information about a key
*
* @key: key material
* @key_len: length of key material
* @cipher: cipher suite selector
* @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used
* with the get_key() callback, must be in little endian,
* length given by @seq_len.
* @seq_len: length of @seq.
* @mode: key install mode (RX_TX, NO_TX or SET_TX)
*/
struct key_params {
const u8 *key;
const u8 *seq;
int key_len;
int seq_len;
u32 cipher;
enum nl80211_key_mode mode;
};
/**
* struct cfg80211_chan_def - channel definition
* @chan: the (control) channel
* @width: channel width
* @center_freq1: center frequency of first segment
* @center_freq2: center frequency of second segment
* (only with 80+80 MHz)
* @edmg: define the EDMG channels configuration.
* If edmg is requested (i.e. the .channels member is non-zero),
* chan will define the primary channel and all other
* parameters are ignored.
*/
struct cfg80211_chan_def {
struct ieee80211_channel *chan;
enum nl80211_chan_width width;
u32 center_freq1;
u32 center_freq2;
struct ieee80211_edmg edmg;
};
/**
* cfg80211_get_chandef_type - return old channel type from chandef
* @chandef: the channel definition
*
* Return: The old channel type (NOHT, HT20, HT40+/-) from a given
* chandef, which must have a bandwidth allowing this conversion.
*/
static inline enum nl80211_channel_type
cfg80211_get_chandef_type(const struct cfg80211_chan_def *chandef)
{
switch (chandef->width) {
case NL80211_CHAN_WIDTH_20_NOHT:
return NL80211_CHAN_NO_HT;
case NL80211_CHAN_WIDTH_20:
return NL80211_CHAN_HT20;
case NL80211_CHAN_WIDTH_40:
if (chandef->center_freq1 > chandef->chan->center_freq)
return NL80211_CHAN_HT40PLUS;
return NL80211_CHAN_HT40MINUS;
default:
WARN_ON(1);
return NL80211_CHAN_NO_HT;
}
}
/**
* cfg80211_chandef_create - create channel definition using channel type
* @chandef: the channel definition struct to fill
* @channel: the control channel
* @chantype: the channel type
*
* Given a channel type, create a channel definition.
*/
void cfg80211_chandef_create(struct cfg80211_chan_def *chandef,
struct ieee80211_channel *channel,
enum nl80211_channel_type chantype);
/**
* cfg80211_chandef_identical - check if two channel definitions are identical
* @chandef1: first channel definition
* @chandef2: second channel definition
*
* Return: %true if the channels defined by the channel definitions are
* identical, %false otherwise.
*/
static inline bool
cfg80211_chandef_identical(const struct cfg80211_chan_def *chandef1,
const struct cfg80211_chan_def *chandef2)
{
return (chandef1->chan == chandef2->chan &&
chandef1->width == chandef2->width &&
chandef1->center_freq1 == chandef2->center_freq1 &&
chandef1->center_freq2 == chandef2->center_freq2);
}
/**
* cfg80211_chandef_is_edmg - check if chandef represents an EDMG channel
*
* @chandef: the channel definition
*
* Return: %true if EDMG defined, %false otherwise.
*/
static inline bool
cfg80211_chandef_is_edmg(const struct cfg80211_chan_def *chandef)
{
return chandef->edmg.channels || chandef->edmg.bw_config;
}
/**
* cfg80211_chandef_compatible - check if two channel definitions are compatible
* @chandef1: first channel definition
* @chandef2: second channel definition
*
* Return: %NULL if the given channel definitions are incompatible,
* chandef1 or chandef2 otherwise.
*/
const struct cfg80211_chan_def *
cfg80211_chandef_compatible(const struct cfg80211_chan_def *chandef1,
const struct cfg80211_chan_def *chandef2);
/**
* cfg80211_chandef_valid - check if a channel definition is valid
* @chandef: the channel definition to check
* Return: %true if the channel definition is valid. %false otherwise.
*/
bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef);
/**
* cfg80211_chandef_usable - check if secondary channels can be used
* @wiphy: the wiphy to validate against
* @chandef: the channel definition to check
* @prohibited_flags: the regulatory channel flags that must not be set
* Return: %true if secondary channels are usable. %false otherwise.
*/
bool cfg80211_chandef_usable(struct wiphy *wiphy,
const struct cfg80211_chan_def *chandef,
u32 prohibited_flags);
/**
* cfg80211_chandef_dfs_required - checks if radar detection is required
* @wiphy: the wiphy to validate against
* @chandef: the channel definition to check
* @iftype: the interface type as specified in &enum nl80211_iftype
* Returns:
* 1 if radar detection is required, 0 if it is not, < 0 on error
*/
int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
const struct cfg80211_chan_def *chandef,
enum nl80211_iftype iftype);
/**
* ieee80211_chandef_rate_flags - returns rate flags for a channel
*
* In some channel types, not all rates may be used - for example CCK
* rates may not be used in 5/10 MHz channels.
*
* @chandef: channel definition for the channel
*
* Returns: rate flags which apply for this channel
*/
static inline enum ieee80211_rate_flags
ieee80211_chandef_rate_flags(struct cfg80211_chan_def *chandef)
{
switch (chandef->width) {
case NL80211_CHAN_WIDTH_5:
return IEEE80211_RATE_SUPPORTS_5MHZ;
case NL80211_CHAN_WIDTH_10:
return IEEE80211_RATE_SUPPORTS_10MHZ;
default:
break;
}
return 0;
}
/**
* ieee80211_chandef_max_power - maximum transmission power for the chandef
*
* In some regulations, the transmit power may depend on the configured channel
* bandwidth which may be defined as dBm/MHz. This function returns the actual
* max_power for non-standard (20 MHz) channels.
*
* @chandef: channel definition for the channel
*
* Returns: maximum allowed transmission power in dBm for the chandef
*/
static inline int
ieee80211_chandef_max_power(struct cfg80211_chan_def *chandef)
{
switch (chandef->width) {
case NL80211_CHAN_WIDTH_5:
return min(chandef->chan->max_reg_power - 6,
chandef->chan->max_power);
case NL80211_CHAN_WIDTH_10:
return min(chandef->chan->max_reg_power - 3,
chandef->chan->max_power);
default:
break;
}
return chandef->chan->max_power;
}
/**
* enum survey_info_flags - survey information flags
*
* @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in
* @SURVEY_INFO_IN_USE: channel is currently being used
* @SURVEY_INFO_TIME: active time (in ms) was filled in
* @SURVEY_INFO_TIME_BUSY: busy time was filled in
* @SURVEY_INFO_TIME_EXT_BUSY: extension channel busy time was filled in
* @SURVEY_INFO_TIME_RX: receive time was filled in
* @SURVEY_INFO_TIME_TX: transmit time was filled in
* @SURVEY_INFO_TIME_SCAN: scan time was filled in
* @SURVEY_INFO_TIME_BSS_RX: local BSS receive time was filled in
*
* Used by the driver to indicate which info in &struct survey_info
* it has filled in during the get_survey().
*/
enum survey_info_flags {
SURVEY_INFO_NOISE_DBM = BIT(0),
SURVEY_INFO_IN_USE = BIT(1),
SURVEY_INFO_TIME = BIT(2),
SURVEY_INFO_TIME_BUSY = BIT(3),
SURVEY_INFO_TIME_EXT_BUSY = BIT(4),
SURVEY_INFO_TIME_RX = BIT(5),
SURVEY_INFO_TIME_TX = BIT(6),
SURVEY_INFO_TIME_SCAN = BIT(7),
SURVEY_INFO_TIME_BSS_RX = BIT(8),
};
/**
* struct survey_info - channel survey response
*
* @channel: the channel this survey record reports, may be %NULL for a single
* record to report global statistics
* @filled: bitflag of flags from &enum survey_info_flags
* @noise: channel noise in dBm. This and all following fields are
* optional
* @time: amount of time in ms the radio was turn on (on the channel)
* @time_busy: amount of time the primary channel was sensed busy
* @time_ext_busy: amount of time the extension channel was sensed busy
* @time_rx: amount of time the radio spent receiving data
* @time_tx: amount of time the radio spent transmitting data
* @time_scan: amount of time the radio spent for scanning
* @time_bss_rx: amount of time the radio spent receiving data on a local BSS
*
* Used by dump_survey() to report back per-channel survey information.
*
* This structure can later be expanded with things like
* channel duty cycle etc.
*/
struct survey_info {
struct ieee80211_channel *channel;
u64 time;
u64 time_busy;
u64 time_ext_busy;
u64 time_rx;
u64 time_tx;
u64 time_scan;
u64 time_bss_rx;
u32 filled;
s8 noise;
};
#define CFG80211_MAX_WEP_KEYS 4
/**
* struct cfg80211_crypto_settings - Crypto settings
* @wpa_versions: indicates which, if any, WPA versions are enabled
* (from enum nl80211_wpa_versions)
* @cipher_group: group key cipher suite (or 0 if unset)
* @n_ciphers_pairwise: number of AP supported unicast ciphers
* @ciphers_pairwise: unicast key cipher suites
* @n_akm_suites: number of AKM suites
* @akm_suites: AKM suites
* @control_port: Whether user space controls IEEE 802.1X port, i.e.,
* sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is
* required to assume that the port is unauthorized until authorized by
* user space. Otherwise, port is marked authorized by default.
* @control_port_ethertype: the control port protocol that should be
* allowed through even on unauthorized ports
* @control_port_no_encrypt: TRUE to prevent encryption of control port
* protocol frames.
* @control_port_over_nl80211: TRUE if userspace expects to exchange control
* port frames over NL80211 instead of the network interface.
* @wep_keys: static WEP keys, if not NULL points to an array of
* CFG80211_MAX_WEP_KEYS WEP keys
* @wep_tx_key: key index (0..3) of the default TX static WEP key
* @psk: PSK (for devices supporting 4-way-handshake offload)
* @sae_pwd: password for SAE authentication (for devices supporting SAE
* offload)
* @sae_pwd_len: length of SAE password (for devices supporting SAE offload)
*/
struct cfg80211_crypto_settings {
u32 wpa_versions;
u32 cipher_group;
int n_ciphers_pairwise;
u32 ciphers_pairwise[NL80211_MAX_NR_CIPHER_SUITES];
int n_akm_suites;
u32 akm_suites[NL80211_MAX_NR_AKM_SUITES];
bool control_port;
__be16 control_port_ethertype;
bool control_port_no_encrypt;
bool control_port_over_nl80211;
struct key_params *wep_keys;
int wep_tx_key;
const u8 *psk;
const u8 *sae_pwd;
u8 sae_pwd_len;
};
/**
* struct cfg80211_beacon_data - beacon data
* @head: head portion of beacon (before TIM IE)
* or %NULL if not changed
* @tail: tail portion of beacon (after TIM IE)
* or %NULL if not changed
* @head_len: length of @head
* @tail_len: length of @tail
* @beacon_ies: extra information element(s) to add into Beacon frames or %NULL
* @beacon_ies_len: length of beacon_ies in octets
* @proberesp_ies: extra information element(s) to add into Probe Response
* frames or %NULL
* @proberesp_ies_len: length of proberesp_ies in octets
* @assocresp_ies: extra information element(s) to add into (Re)Association
* Response frames or %NULL
* @assocresp_ies_len: length of assocresp_ies in octets
* @probe_resp_len: length of probe response template (@probe_resp)
* @probe_resp: probe response template (AP mode only)
* @ftm_responder: enable FTM responder functionality; -1 for no change
* (which also implies no change in LCI/civic location data)
* @lci: Measurement Report element content, starting with Measurement Token
* (measurement type 8)
* @civicloc: Measurement Report element content, starting with Measurement
* Token (measurement type 11)
* @lci_len: LCI data length
* @civicloc_len: Civic location data length
*/
struct cfg80211_beacon_data {
const u8 *head, *tail;
const u8 *beacon_ies;
const u8 *proberesp_ies;
const u8 *assocresp_ies;
const u8 *probe_resp;
const u8 *lci;
const u8 *civicloc;
s8 ftm_responder;
size_t head_len, tail_len;
size_t beacon_ies_len;
size_t proberesp_ies_len;
size_t assocresp_ies_len;
size_t probe_resp_len;
size_t lci_len;
size_t civicloc_len;
};
struct mac_address {
u8 addr[ETH_ALEN];
};
/**
* struct cfg80211_acl_data - Access control list data
*
* @acl_policy: ACL policy to be applied on the station's
* entry specified by mac_addr
* @n_acl_entries: Number of MAC address entries passed
* @mac_addrs: List of MAC addresses of stations to be used for ACL
*/
struct cfg80211_acl_data {
enum nl80211_acl_policy acl_policy;
int n_acl_entries;
/* Keep it last */
struct mac_address mac_addrs[];
};
/*
* cfg80211_bitrate_mask - masks for bitrate control
*/
struct cfg80211_bitrate_mask {
struct {
u32 legacy;
u8 ht_mcs[IEEE80211_HT_MCS_MASK_LEN];
u16 vht_mcs[NL80211_VHT_NSS_MAX];
enum nl80211_txrate_gi gi;
} control[NUM_NL80211_BANDS];
};
/**
* enum cfg80211_ap_settings_flags - AP settings flags
*
* Used by cfg80211_ap_settings
*
* @AP_SETTINGS_EXTERNAL_AUTH_SUPPORT: AP supports external authentication
*/
enum cfg80211_ap_settings_flags {
AP_SETTINGS_EXTERNAL_AUTH_SUPPORT = BIT(0),
};
/**
* struct cfg80211_ap_settings - AP configuration
*
* Used to configure an AP interface.
*
* @chandef: defines the channel to use
* @beacon: beacon data
* @beacon_interval: beacon interval
* @dtim_period: DTIM period
* @ssid: SSID to be used in the BSS (note: may be %NULL if not provided from
* user space)
* @ssid_len: length of @ssid
* @hidden_ssid: whether to hide the SSID in Beacon/Probe Response frames
* @crypto: crypto settings
* @privacy: the BSS uses privacy
* @auth_type: Authentication type (algorithm)
* @smps_mode: SMPS mode
* @inactivity_timeout: time in seconds to determine station's inactivity.
* @p2p_ctwindow: P2P CT Window
* @p2p_opp_ps: P2P opportunistic PS
* @acl: ACL configuration used by the drivers which has support for
* MAC address based access control
* @pbss: If set, start as a PCP instead of AP. Relevant for DMG
* networks.
* @beacon_rate: bitrate to be used for beacons
* @ht_cap: HT capabilities (or %NULL if HT isn't enabled)
* @vht_cap: VHT capabilities (or %NULL if VHT isn't enabled)
* @he_cap: HE capabilities (or %NULL if HE isn't enabled)
* @ht_required: stations must support HT
* @vht_required: stations must support VHT
* @twt_responder: Enable Target Wait Time
* @flags: flags, as defined in enum cfg80211_ap_settings_flags
* @he_obss_pd: OBSS Packet Detection settings
*/
struct cfg80211_ap_settings {
struct cfg80211_chan_def chandef;
struct cfg80211_beacon_data beacon;
int beacon_interval, dtim_period;
const u8 *ssid;
size_t ssid_len;
enum nl80211_hidden_ssid hidden_ssid;