forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 5
/
Copy pathieee80211_i.h
1643 lines (1389 loc) · 48.8 KB
/
ieee80211_i.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
/*
* Copyright 2002-2005, Instant802 Networks, Inc.
* Copyright 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 IEEE80211_I_H
#define IEEE80211_I_H
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/if_ether.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/workqueue.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/etherdevice.h>
#include <linux/leds.h>
#include <linux/idr.h>
#include <net/ieee80211_radiotap.h>
#include <net/cfg80211.h>
#include <net/mac80211.h>
#include "key.h"
#include "sta_info.h"
#include "debug.h"
struct ieee80211_local;
/* Maximum number of broadcast/multicast frames to buffer when some of the
* associated stations are using power saving. */
#define AP_MAX_BC_BUFFER 128
/* Maximum number of frames buffered to all STAs, including multicast frames.
* Note: increasing this limit increases the potential memory requirement. Each
* frame can be up to about 2 kB long. */
#define TOTAL_MAX_TX_BUFFER 512
/* Required encryption head and tailroom */
#define IEEE80211_ENCRYPT_HEADROOM 8
#define IEEE80211_ENCRYPT_TAILROOM 18
/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
* reception of at least three fragmented frames. This limit can be increased
* by changing this define, at the cost of slower frame reassembly and
* increased memory use (about 2 kB of RAM per entry). */
#define IEEE80211_FRAGMENT_MAX 4
#define TU_TO_JIFFIES(x) (usecs_to_jiffies((x) * 1024))
#define TU_TO_EXP_TIME(x) (jiffies + TU_TO_JIFFIES(x))
/* power level hasn't been configured (or set to automatic) */
#define IEEE80211_UNSET_POWER_LEVEL INT_MIN
/*
* Some APs experience problems when working with U-APSD. Decrease the
* probability of that happening by using legacy mode for all ACs but VO.
* The AP that caused us trouble was a Cisco 4410N. It ignores our
* setting, and always treats non-VO ACs as legacy.
*/
#define IEEE80211_DEFAULT_UAPSD_QUEUES \
IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
#define IEEE80211_DEFAULT_MAX_SP_LEN \
IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
#define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
struct ieee80211_fragment_entry {
unsigned long first_frag_time;
unsigned int seq;
unsigned int rx_queue;
unsigned int last_frag;
unsigned int extra_len;
struct sk_buff_head skb_list;
int ccmp; /* Whether fragments were encrypted with CCMP */
u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
};
struct ieee80211_bss {
/* don't want to look up all the time */
size_t ssid_len;
u8 ssid[IEEE80211_MAX_SSID_LEN];
u32 device_ts;
bool wmm_used;
bool uapsd_supported;
unsigned long last_probe_resp;
#ifdef CONFIG_MAC80211_MESH
u8 *mesh_id;
size_t mesh_id_len;
u8 *mesh_cfg;
#endif
#define IEEE80211_MAX_SUPP_RATES 32
u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
size_t supp_rates_len;
/*
* During association, we save an ERP value from a probe response so
* that we can feed ERP info to the driver when handling the
* association completes. these fields probably won't be up-to-date
* otherwise, you probably don't want to use them.
*/
bool has_erp_value;
u8 erp_value;
/* Keep track of the corruption of the last beacon/probe response. */
u8 corrupt_data;
/* Keep track of what bits of information we have valid info for. */
u8 valid_data;
};
/**
* enum ieee80211_corrupt_data_flags - BSS data corruption flags
* @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
* @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
*
* These are bss flags that are attached to a bss in the
* @corrupt_data field of &struct ieee80211_bss.
*/
enum ieee80211_bss_corrupt_data_flags {
IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
};
/**
* enum ieee80211_valid_data_flags - BSS valid data flags
* @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
* @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
* @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
*
* These are bss flags that are attached to a bss in the
* @valid_data field of &struct ieee80211_bss. They show which parts
* of the data structure were recieved as a result of an un-corrupted
* beacon/probe response.
*/
enum ieee80211_bss_valid_data_flags {
IEEE80211_BSS_VALID_WMM = BIT(1),
IEEE80211_BSS_VALID_RATES = BIT(2),
IEEE80211_BSS_VALID_ERP = BIT(3)
};
static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
{
#ifdef CONFIG_MAC80211_MESH
return bss->mesh_cfg;
#endif
return NULL;
}
static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
{
#ifdef CONFIG_MAC80211_MESH
return bss->mesh_id;
#endif
return NULL;
}
static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
{
#ifdef CONFIG_MAC80211_MESH
return bss->mesh_id_len;
#endif
return 0;
}
typedef unsigned __bitwise__ ieee80211_tx_result;
#define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
#define TX_DROP ((__force ieee80211_tx_result) 1u)
#define TX_QUEUED ((__force ieee80211_tx_result) 2u)
#define IEEE80211_TX_UNICAST BIT(1)
#define IEEE80211_TX_PS_BUFFERED BIT(2)
struct ieee80211_tx_data {
struct sk_buff *skb;
struct sk_buff_head skbs;
struct ieee80211_local *local;
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
struct ieee80211_key *key;
unsigned int flags;
};
typedef unsigned __bitwise__ ieee80211_rx_result;
#define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
#define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
#define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
#define RX_QUEUED ((__force ieee80211_rx_result) 3u)
/**
* enum ieee80211_packet_rx_flags - packet RX flags
* @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
* (incl. multicast frames)
* @IEEE80211_RX_FRAGMENTED: fragmented frame
* @IEEE80211_RX_AMSDU: a-MSDU packet
* @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
* @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
*
* These are per-frame flags that are attached to a frame in the
* @rx_flags field of &struct ieee80211_rx_status.
*/
enum ieee80211_packet_rx_flags {
IEEE80211_RX_RA_MATCH = BIT(1),
IEEE80211_RX_FRAGMENTED = BIT(2),
IEEE80211_RX_AMSDU = BIT(3),
IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
};
/**
* enum ieee80211_rx_flags - RX data flags
*
* @IEEE80211_RX_CMNTR: received on cooked monitor already
* @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
* to cfg80211_report_obss_beacon().
*
* These flags are used across handling multiple interfaces
* for a single frame.
*/
enum ieee80211_rx_flags {
IEEE80211_RX_CMNTR = BIT(0),
IEEE80211_RX_BEACON_REPORTED = BIT(1),
};
struct ieee80211_rx_data {
struct sk_buff *skb;
struct ieee80211_local *local;
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
struct ieee80211_key *key;
unsigned int flags;
/*
* Index into sequence numbers array, 0..16
* since the last (16) is used for non-QoS,
* will be 16 on non-QoS frames.
*/
int seqno_idx;
/*
* Index into the security IV/PN arrays, 0..16
* since the last (16) is used for CCMP-encrypted
* management frames, will be set to 16 on mgmt
* frames and 0 on non-QoS frames.
*/
int security_idx;
u32 tkip_iv32;
u16 tkip_iv16;
};
struct beacon_data {
u8 *head, *tail;
int head_len, tail_len;
struct rcu_head rcu_head;
};
struct probe_resp {
struct rcu_head rcu_head;
int len;
u8 data[0];
};
struct ps_data {
/* yes, this looks ugly, but guarantees that we can later use
* bitmap_empty :)
* NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
struct sk_buff_head bc_buf;
atomic_t num_sta_ps; /* number of stations in PS mode */
int dtim_count;
bool dtim_bc_mc;
};
struct ieee80211_if_ap {
struct beacon_data __rcu *beacon;
struct probe_resp __rcu *probe_resp;
struct list_head vlans;
struct ps_data ps;
atomic_t num_mcast_sta; /* number of stations receiving multicast */
};
struct ieee80211_if_wds {
struct sta_info *sta;
u8 remote_addr[ETH_ALEN];
};
struct ieee80211_if_vlan {
struct list_head list;
/* used for all tx if the VLAN is configured to 4-addr mode */
struct sta_info __rcu *sta;
};
struct mesh_stats {
__u32 fwded_mcast; /* Mesh forwarded multicast frames */
__u32 fwded_unicast; /* Mesh forwarded unicast frames */
__u32 fwded_frames; /* Mesh total forwarded frames */
__u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
__u32 dropped_frames_no_route; /* Not transmitted, no route found */
__u32 dropped_frames_congestion;/* Not forwarded due to congestion */
};
#define PREQ_Q_F_START 0x1
#define PREQ_Q_F_REFRESH 0x2
struct mesh_preq_queue {
struct list_head list;
u8 dst[ETH_ALEN];
u8 flags;
};
#if HZ/100 == 0
#define IEEE80211_ROC_MIN_LEFT 1
#else
#define IEEE80211_ROC_MIN_LEFT (HZ/100)
#endif
struct ieee80211_roc_work {
struct list_head list;
struct list_head dependents;
struct delayed_work work;
struct ieee80211_sub_if_data *sdata;
struct ieee80211_channel *chan;
bool started, abort, hw_begun, notified;
unsigned long hw_start_time;
u32 duration, req_duration;
struct sk_buff *frame;
u64 cookie, mgmt_tx_cookie;
};
/* flags used in struct ieee80211_if_managed.flags */
enum ieee80211_sta_flags {
IEEE80211_STA_BEACON_POLL = BIT(0),
IEEE80211_STA_CONNECTION_POLL = BIT(1),
IEEE80211_STA_CONTROL_PORT = BIT(2),
IEEE80211_STA_DISABLE_HT = BIT(4),
IEEE80211_STA_CSA_RECEIVED = BIT(5),
IEEE80211_STA_MFP_ENABLED = BIT(6),
IEEE80211_STA_UAPSD_ENABLED = BIT(7),
IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
IEEE80211_STA_DISABLE_40MHZ = BIT(10),
IEEE80211_STA_DISABLE_VHT = BIT(11),
IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
IEEE80211_STA_DISABLE_160MHZ = BIT(13),
};
struct ieee80211_mgd_auth_data {
struct cfg80211_bss *bss;
unsigned long timeout;
int tries;
u16 algorithm, expected_transaction;
u8 key[WLAN_KEY_LEN_WEP104];
u8 key_len, key_idx;
bool done;
u16 sae_trans, sae_status;
size_t data_len;
u8 data[];
};
struct ieee80211_mgd_assoc_data {
struct cfg80211_bss *bss;
const u8 *supp_rates;
unsigned long timeout;
int tries;
u16 capability;
u8 prev_bssid[ETH_ALEN];
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len;
u8 supp_rates_len;
bool wmm, uapsd;
bool have_beacon;
bool sent_assoc;
bool synced;
u8 ap_ht_param;
size_t ie_len;
u8 ie[];
};
struct ieee80211_if_managed {
struct timer_list timer;
struct timer_list conn_mon_timer;
struct timer_list bcn_mon_timer;
struct timer_list chswitch_timer;
struct work_struct monitor_work;
struct work_struct chswitch_work;
struct work_struct beacon_connection_loss_work;
struct work_struct csa_connection_drop_work;
unsigned long beacon_timeout;
unsigned long probe_timeout;
int probe_send_count;
bool nullfunc_failed;
struct mutex mtx;
struct cfg80211_bss *associated;
struct ieee80211_mgd_auth_data *auth_data;
struct ieee80211_mgd_assoc_data *assoc_data;
u8 bssid[ETH_ALEN];
u16 aid;
unsigned long timers_running; /* used for quiesce/restart */
bool powersave; /* powersave requested for this iface */
bool broken_ap; /* AP is broken -- turn off powersave */
u8 dtim_period;
enum ieee80211_smps_mode req_smps, /* requested smps mode */
driver_smps_mode; /* smps mode request */
struct work_struct request_smps_work;
unsigned int flags;
bool beacon_crc_valid;
u32 beacon_crc;
enum {
IEEE80211_MFP_DISABLED,
IEEE80211_MFP_OPTIONAL,
IEEE80211_MFP_REQUIRED
} mfp; /* management frame protection */
/*
* Bitmask of enabled u-apsd queues,
* IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
* to take effect.
*/
unsigned int uapsd_queues;
/*
* Maximum number of buffered frames AP can deliver during a
* service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
* Needs a new association to take effect.
*/
unsigned int uapsd_max_sp_len;
int wmm_last_param_set;
u8 use_4addr;
u8 p2p_noa_index;
/* Signal strength from the last Beacon frame in the current BSS. */
int last_beacon_signal;
/*
* Weighted average of the signal strength from Beacon frames in the
* current BSS. This is in units of 1/16 of the signal unit to maintain
* accuracy and to speed up calculations, i.e., the value need to be
* divided by 16 to get the actual value.
*/
int ave_beacon_signal;
/*
* Number of Beacon frames used in ave_beacon_signal. This can be used
* to avoid generating less reliable cqm events that would be based
* only on couple of received frames.
*/
unsigned int count_beacon_signal;
/*
* Last Beacon frame signal strength average (ave_beacon_signal / 16)
* that triggered a cqm event. 0 indicates that no event has been
* generated for the current association.
*/
int last_cqm_event_signal;
/*
* State variables for keeping track of RSSI of the AP currently
* connected to and informing driver when RSSI has gone
* below/above a certain threshold.
*/
int rssi_min_thold, rssi_max_thold;
int last_ave_beacon_signal;
struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
};
struct ieee80211_if_ibss {
struct timer_list timer;
struct mutex mtx;
unsigned long last_scan_completed;
u32 basic_rates;
bool timer_running;
bool fixed_bssid;
bool fixed_channel;
bool privacy;
bool control_port;
unsigned int auth_frame_registrations;
u8 bssid[ETH_ALEN] __aligned(2);
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len, ie_len;
u8 *ie;
struct ieee80211_channel *channel;
enum nl80211_channel_type channel_type;
unsigned long ibss_join_req;
/* probe response/beacon for IBSS */
struct sk_buff __rcu *presp;
struct sk_buff *skb;
spinlock_t incomplete_lock;
struct list_head incomplete_stations;
enum {
IEEE80211_IBSS_MLME_SEARCH,
IEEE80211_IBSS_MLME_JOINED,
} state;
};
/**
* struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
*
* these declarations define the interface, which enables
* vendor-specific mesh synchronization
*
*/
struct ieee802_11_elems;
struct ieee80211_mesh_sync_ops {
void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
u16 stype,
struct ieee80211_mgmt *mgmt,
struct ieee802_11_elems *elems,
struct ieee80211_rx_status *rx_status);
void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata);
/* add other framework functions here */
};
struct ieee80211_if_mesh {
struct timer_list housekeeping_timer;
struct timer_list mesh_path_timer;
struct timer_list mesh_path_root_timer;
unsigned long timers_running;
unsigned long wrkq_flags;
u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
size_t mesh_id_len;
/* Active Path Selection Protocol Identifier */
u8 mesh_pp_id;
/* Active Path Selection Metric Identifier */
u8 mesh_pm_id;
/* Congestion Control Mode Identifier */
u8 mesh_cc_id;
/* Synchronization Protocol Identifier */
u8 mesh_sp_id;
/* Authentication Protocol Identifier */
u8 mesh_auth_id;
/* Local mesh Sequence Number */
u32 sn;
/* Last used PREQ ID */
u32 preq_id;
atomic_t mpaths;
/* Timestamp of last SN update */
unsigned long last_sn_update;
/* Time when it's ok to send next PERR */
unsigned long next_perr;
/* Timestamp of last PREQ sent */
unsigned long last_preq;
struct mesh_rmc *rmc;
spinlock_t mesh_preq_queue_lock;
struct mesh_preq_queue preq_queue;
int preq_queue_len;
struct mesh_stats mshstats;
struct mesh_config mshcfg;
atomic_t estab_plinks;
u32 mesh_seqnum;
bool accepting_plinks;
int num_gates;
const u8 *ie;
u8 ie_len;
enum {
IEEE80211_MESH_SEC_NONE = 0x0,
IEEE80211_MESH_SEC_AUTHED = 0x1,
IEEE80211_MESH_SEC_SECURED = 0x2,
} security;
/* Extensible Synchronization Framework */
const struct ieee80211_mesh_sync_ops *sync_ops;
s64 sync_offset_clockdrift_max;
spinlock_t sync_offset_lock;
bool adjusting_tbtt;
};
#ifdef CONFIG_MAC80211_MESH
#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
do { (msh)->mshstats.name++; } while (0)
#else
#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
do { } while (0)
#endif
/**
* enum ieee80211_sub_if_data_flags - virtual interface flags
*
* @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
* @IEEE80211_SDATA_PROMISC: interface is promisc
* @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
* @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
* associated stations and deliver multicast frames both
* back to wireless media and to the local net stack.
* @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
* @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
*/
enum ieee80211_sub_if_data_flags {
IEEE80211_SDATA_ALLMULTI = BIT(0),
IEEE80211_SDATA_PROMISC = BIT(1),
IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
IEEE80211_SDATA_IN_DRIVER = BIT(5),
};
/**
* enum ieee80211_sdata_state_bits - virtual interface state bits
* @SDATA_STATE_RUNNING: virtual interface is up & running; this
* mirrors netif_running() but is separate for interface type
* change handling while the interface is up
* @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
* mode, so queues are stopped
*/
enum ieee80211_sdata_state_bits {
SDATA_STATE_RUNNING,
SDATA_STATE_OFFCHANNEL,
};
/**
* enum ieee80211_chanctx_mode - channel context configuration mode
*
* @IEEE80211_CHANCTX_SHARED: channel context may be used by
* multiple interfaces
* @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
* only by a single interface. This can be used for example for
* non-fixed channel IBSS.
*/
enum ieee80211_chanctx_mode {
IEEE80211_CHANCTX_SHARED,
IEEE80211_CHANCTX_EXCLUSIVE
};
struct ieee80211_chanctx {
struct list_head list;
struct rcu_head rcu_head;
enum ieee80211_chanctx_mode mode;
int refcount;
struct ieee80211_chanctx_conf conf;
};
struct ieee80211_sub_if_data {
struct list_head list;
struct wireless_dev wdev;
/* keys */
struct list_head key_list;
/* count for keys needing tailroom space allocation */
int crypto_tx_tailroom_needed_cnt;
struct net_device *dev;
struct ieee80211_local *local;
unsigned int flags;
unsigned long state;
int drop_unencrypted;
char name[IFNAMSIZ];
/* to detect idle changes */
bool old_idle;
/* Fragment table for host-based reassembly */
struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
unsigned int fragment_next;
/* TID bitmap for NoAck policy */
u16 noack_map;
/* bit field of ACM bits (BIT(802.1D tag)) */
u8 wmm_acm;
struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
struct ieee80211_key __rcu *default_unicast_key;
struct ieee80211_key __rcu *default_multicast_key;
struct ieee80211_key __rcu *default_mgmt_key;
u16 sequence_number;
__be16 control_port_protocol;
bool control_port_no_encrypt;
struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
/* used to reconfigure hardware SM PS */
struct work_struct recalc_smps;
struct work_struct work;
struct sk_buff_head skb_queue;
bool arp_filter_state;
u8 needed_rx_chains;
enum ieee80211_smps_mode smps_mode;
int user_power_level; /* in dBm */
int ap_power_level; /* in dBm */
/*
* AP this belongs to: self in AP mode and
* corresponding AP in VLAN mode, NULL for
* all others (might be needed later in IBSS)
*/
struct ieee80211_if_ap *bss;
/* bitmap of allowed (non-MCS) rate indexes for rate control */
u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
union {
struct ieee80211_if_ap ap;
struct ieee80211_if_wds wds;
struct ieee80211_if_vlan vlan;
struct ieee80211_if_managed mgd;
struct ieee80211_if_ibss ibss;
struct ieee80211_if_mesh mesh;
u32 mntr_flags;
} u;
spinlock_t cleanup_stations_lock;
struct list_head cleanup_stations;
struct work_struct cleanup_stations_wk;
#ifdef CONFIG_MAC80211_DEBUGFS
struct {
struct dentry *dir;
struct dentry *subdir_stations;
struct dentry *default_unicast_key;
struct dentry *default_multicast_key;
struct dentry *default_mgmt_key;
} debugfs;
#endif
/* must be last, dynamically sized area in this! */
struct ieee80211_vif vif;
};
static inline
struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
{
return container_of(p, struct ieee80211_sub_if_data, vif);
}
static inline enum ieee80211_band
ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
{
enum ieee80211_band band = IEEE80211_BAND_2GHZ;
struct ieee80211_chanctx_conf *chanctx_conf;
rcu_read_lock();
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
if (!WARN_ON(!chanctx_conf))
band = chanctx_conf->def.chan->band;
rcu_read_unlock();
return band;
}
enum sdata_queue_type {
IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
IEEE80211_SDATA_QUEUE_AGG_START = 1,
IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
};
enum {
IEEE80211_RX_MSG = 1,
IEEE80211_TX_STATUS_MSG = 2,
IEEE80211_EOSP_MSG = 3,
};
struct skb_eosp_msg_data {
u8 sta[ETH_ALEN], iface[ETH_ALEN];
};
enum queue_stop_reason {
IEEE80211_QUEUE_STOP_REASON_DRIVER,
IEEE80211_QUEUE_STOP_REASON_PS,
IEEE80211_QUEUE_STOP_REASON_CSA,
IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
IEEE80211_QUEUE_STOP_REASON_SUSPEND,
IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
};
#ifdef CONFIG_MAC80211_LEDS
struct tpt_led_trigger {
struct led_trigger trig;
char name[32];
const struct ieee80211_tpt_blink *blink_table;
unsigned int blink_table_len;
struct timer_list timer;
unsigned long prev_traffic;
unsigned long tx_bytes, rx_bytes;
unsigned int active, want;
bool running;
};
#endif
/**
* mac80211 scan flags - currently active scan mode
*
* @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
* well be on the operating channel
* @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
* determine if we are on the operating channel or not
* @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
* channel. This should not interrupt normal traffic.
* @SCAN_COMPLETED: Set for our scan work function when the driver reported
* that the scan completed.
* @SCAN_ABORTED: Set for our scan work function when the driver reported
* a scan complete for an aborted scan.
*/
enum {
SCAN_SW_SCANNING,
SCAN_HW_SCANNING,
SCAN_ONCHANNEL_SCANNING,
SCAN_COMPLETED,
SCAN_ABORTED,
};
/**
* enum mac80211_scan_state - scan state machine states
*
* @SCAN_DECISION: Main entry point to the scan state machine, this state
* determines if we should keep on scanning or switch back to the
* operating channel
* @SCAN_SET_CHANNEL: Set the next channel to be scanned
* @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
* @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
* send out data
* @SCAN_RESUME: Resume the scan and scan the next channel
* @SCAN_ABORT: Abort the scan and go back to operating channel
*/
enum mac80211_scan_state {
SCAN_DECISION,
SCAN_SET_CHANNEL,
SCAN_SEND_PROBE,
SCAN_SUSPEND,
SCAN_RESUME,
SCAN_ABORT,
};
struct ieee80211_local {
/* embed the driver visible part.
* don't cast (use the static inlines below), but we keep
* it first anyway so they become a no-op */
struct ieee80211_hw hw;
const struct ieee80211_ops *ops;
/*
* private workqueue to mac80211. mac80211 makes this accessible
* via ieee80211_queue_work()
*/
struct workqueue_struct *workqueue;
unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
/* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
spinlock_t queue_stop_reason_lock;
int open_count;
int monitors, cooked_mntrs;
/* number of interfaces with corresponding FIF_ flags */
int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
fif_probe_req;
int probe_req_reg;
unsigned int filter_flags; /* FIF_* */
bool wiphy_ciphers_allocated;
bool use_chanctx;
/* protects the aggregated multicast list and filter calls */
spinlock_t filter_lock;
/* used for uploading changed mc list */
struct work_struct reconfig_filter;
/* aggregated multicast list */
struct netdev_hw_addr_list mc_list;
bool tim_in_locked_section; /* see ieee80211_beacon_get() */
/*
* suspended is true if we finished all the suspend _and_ we have
* not yet come up from resume. This is to be used by mac80211
* to ensure driver sanity during suspend and mac80211's own
* sanity. It can eventually be used for WoW as well.
*/
bool suspended;
/*
* Resuming is true while suspended, but when we're reprogramming the
* hardware -- at that time it's allowed to use ieee80211_queue_work()
* again even though some other parts of the stack are still suspended
* and we still drop received frames to avoid waking the stack.
*/
bool resuming;
/*
* quiescing is true during the suspend process _only_ to
* ease timer cancelling etc.
*/
bool quiescing;
/* device is started */
bool started;
/* device is during a HW reconfig */
bool in_reconfig;
/* wowlan is enabled -- don't reconfig on resume */
bool wowlan;
/* number of RX chains the hardware has */
u8 rx_chains;
int tx_headroom; /* required headroom for hardware/radiotap */
/* Tasklet and skb queue to process calls from IRQ mode. All frames
* added to skb_queue will be processed, but frames in
* skb_queue_unreliable may be dropped if the total length of these
* queues increases over the limit. */
#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
struct tasklet_struct tasklet;
struct sk_buff_head skb_queue;
struct sk_buff_head skb_queue_unreliable;
/*
* Internal FIFO queue which is shared between multiple rx path
* stages. Its main task is to provide a serialization mechanism,
* so all rx handlers can enjoy having exclusive access to their
* private data structures.
*/
struct sk_buff_head rx_skb_queue;
bool running_rx_handler; /* protected by rx_skb_queue.lock */
/* Station data */
/*
* The mutex only protects the list, hash table and
* counter, reads are done with RCU.
*/
struct mutex sta_mtx;
spinlock_t tim_lock;
unsigned long num_sta;
struct list_head sta_list;
struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
struct timer_list sta_cleanup;
int sta_generation;