summaryrefslogtreecommitdiffstats
path: root/net/mac80211/ieee80211_i.h
blob: f56d342c31b8f7e641c0f2b4fade82fc6af7a22c (plain)
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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
/*
 * 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>
 * Copyright 2013-2014  Intel Mobile Communications GmbH
 *
 * 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 <linux/rhashtable.h>
#include <net/ieee80211_radiotap.h>
#include <net/cfg80211.h>
#include <net/mac80211.h>
#include <net/fq.h>
#include "key.h"
#include "sta_info.h"
#include "debug.h"

extern const struct cfg80211_ops mac80211_config_ops;

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

/* 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. Decreasing the
 * probability of that happening by using legacy mode for all ACs but VO isn't
 * enough.
 *
 * Cisco 4410N originally forced us to enable VO by default only because it
 * treated non-VO ACs as legacy.
 *
 * However some APs (notably Netgear R7000) silently reclassify packets to
 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
 * clients would never see some frames (e.g. ARP responses) or would fetch them
 * accidentally after a long time.
 *
 * It makes little sense to enable u-APSD queues by default because it needs
 * userspace applications to be aware of it to actually take advantage of the
 * possible additional powersavings. Implicitly depending on driver autotrigger
 * frame support doesn't make much sense.
 */
#define IEEE80211_DEFAULT_UAPSD_QUEUES 0

#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 {
	struct sk_buff_head skb_list;
	unsigned long first_frag_time;
	u16 seq;
	u16 extra_len;
	u16 last_frag;
	u8 rx_queue;
	bool check_sequential_pn; /* needed for CCMP/GCMP */
	u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
};


struct ieee80211_bss {
	u32 device_ts_beacon, device_ts_presp;

	bool wmm_used;
	bool uapsd_supported;

#define IEEE80211_MAX_SUPP_RATES 32
	u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
	size_t supp_rates_len;
	struct ieee80211_rate *beacon_rate;

	/*
	 * 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 received 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)
};

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;
	struct ieee80211_tx_rate rate;

	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_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_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 napi_struct *napi;
	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 ieee80211_csa_settings {
	const u16 *counter_offsets_beacon;
	const u16 *counter_offsets_presp;

	int n_counter_offsets_beacon;
	int n_counter_offsets_presp;

	u8 count;
};

struct beacon_data {
	u8 *head, *tail;
	int head_len, tail_len;
	struct ieee80211_meshconf_ie *meshconf;
	u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
	u8 csa_current_counter;
	struct rcu_head rcu_head;
};

struct probe_resp {
	struct rcu_head rcu_head;
	int len;
	u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
	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)]
			__aligned(__alignof__(unsigned long));
	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;

	/* to be used after channel switch. */
	struct cfg80211_beacon_data *next_beacon;
	struct list_head vlans; /* write-protected with RTNL and local->mtx */

	struct ps_data ps;
	atomic_t num_mcast_sta; /* number of stations receiving multicast */
	enum ieee80211_smps_mode req_smps, /* requested smps mode */
			 driver_smps_mode; /* smps mode request */

	struct work_struct request_smps_work;
};

struct ieee80211_if_wds {
	struct sta_info *sta;
	u8 remote_addr[ETH_ALEN];
};

struct ieee80211_if_vlan {
	struct list_head list; /* write-protected with RTNL and local->mtx */

	/* 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;
};

struct ieee80211_roc_work {
	struct list_head list;

	struct ieee80211_sub_if_data *sdata;

	struct ieee80211_channel *chan;

	bool started, abort, hw_begun, notified;
	bool on_channel;

	unsigned long start_time;

	u32 duration, req_duration;
	struct sk_buff *frame;
	u64 cookie, mgmt_tx_cookie;
	enum ieee80211_roc_type type;
};

/* flags used in struct ieee80211_if_managed.flags */
enum ieee80211_sta_flags {
	IEEE80211_STA_CONNECTION_POLL	= BIT(1),
	IEEE80211_STA_CONTROL_PORT	= BIT(2),
	IEEE80211_STA_DISABLE_HT	= BIT(4),
	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),
	IEEE80211_STA_DISABLE_WMM	= BIT(14),
	IEEE80211_STA_ENABLE_RRM	= BIT(15),
};

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;
	bool timeout_started;

	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 need_beacon;
	bool synced;
	bool timeout_started;

	u8 ap_ht_param;

	struct ieee80211_vht_cap ap_vht_cap;

	size_t ie_len;
	u8 ie[];
};

struct ieee80211_sta_tx_tspec {
	/* timestamp of the first packet in the time slice */
	unsigned long time_slice_start;

	u32 admitted_time; /* in usecs, unlike over the air */
	u8 tsid;
	s8 up; /* signed to be able to invalidate with -1 during teardown */

	/* consumed TX time in microseconds in the time slice */
	u32 consumed_tx_time;
	enum {
		TX_TSPEC_ACTION_NONE = 0,
		TX_TSPEC_ACTION_DOWNGRADE,
		TX_TSPEC_ACTION_STOP_DOWNGRADE,
	} action;
	bool downgraded;
};

DECLARE_EWMA(beacon_signal, 16, 4)

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;
	bool connection_loss;

	struct cfg80211_bss *associated;
	struct ieee80211_mgd_auth_data *auth_data;
	struct ieee80211_mgd_assoc_data *assoc_data;

	u8 bssid[ETH_ALEN];

	u16 aid;

	bool powersave; /* powersave requested for this iface */
	bool broken_ap; /* AP is broken -- turn off powersave */
	bool have_beacon;
	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 csa_waiting_bcn;
	bool csa_ignored_same_chan;

	bool beacon_crc_valid;
	u32 beacon_crc;

	bool status_acked;
	bool status_received;
	__le16 status_fc;

	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;

	s16 p2p_noa_index;

	struct ewma_beacon_signal 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;

	/* Number of times beacon loss was invoked. */
	unsigned int beacon_loss_count;

	/*
	 * 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_vht_cap vht_capa; /* configured VHT overrides */
	struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */

	/* TDLS support */
	u8 tdls_peer[ETH_ALEN] __aligned(2);
	struct delayed_work tdls_peer_del_work;
	struct sk_buff *orig_teardown_skb; /* The original teardown skb */
	struct sk_buff *teardown_skb; /* A copy to send through the AP */
	spinlock_t teardown_lock; /* To lock changing teardown_skb */
	bool tdls_chan_switch_prohibited;
	bool tdls_wider_bw_prohibited;

	/* WMM-AC TSPEC support */
	struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
	/* Use a separate work struct so that we can do something here
	 * while the sdata->work is flushing the queues, for example.
	 * otherwise, in scenarios where we hardly get any traffic out
	 * on the BE queue, but there's a lot of VO traffic, we might
	 * get stuck in a downgraded situation and flush takes forever.
	 */
	struct delayed_work tx_tspec_wk;
};

struct ieee80211_if_ibss {
	struct timer_list timer;
	struct work_struct csa_connection_drop_work;

	unsigned long last_scan_completed;

	u32 basic_rates;

	bool fixed_bssid;
	bool fixed_channel;
	bool privacy;

	bool control_port;
	bool userspace_handles_dfs;

	u8 bssid[ETH_ALEN] __aligned(2);
	u8 ssid[IEEE80211_MAX_SSID_LEN];
	u8 ssid_len, ie_len;
	u8 *ie;
	struct cfg80211_chan_def chandef;

	unsigned long ibss_join_req;
	/* probe response/beacon for IBSS */
	struct beacon_data __rcu *presp;

	struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
	struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */

	spinlock_t incomplete_lock;
	struct list_head incomplete_stations;

	enum {
		IEEE80211_IBSS_MLME_SEARCH,
		IEEE80211_IBSS_MLME_JOINED,
	} state;
};

/**
 * struct ieee80211_if_ocb - OCB mode state
 *
 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
 * @wrkq_flags: OCB deferred task action
 * @incomplete_lock: delayed STA insertion lock
 * @incomplete_stations: list of STAs waiting for delayed insertion
 * @joined: indication if the interface is connected to an OCB network
 */
struct ieee80211_if_ocb {
	struct timer_list housekeeping_timer;
	unsigned long wrkq_flags;

	spinlock_t incomplete_lock;
	struct list_head incomplete_stations;

	bool joined;
};

/**
 * 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);

	/* should be called with beacon_data under RCU read lock */
	void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
			    struct beacon_data *beacon);
	/* add other framework functions here */
};

struct mesh_csa_settings {
	struct rcu_head rcu_head;
	struct cfg80211_csa_settings settings;
};

struct ieee80211_if_mesh {
	struct timer_list housekeeping_timer;
	struct timer_list mesh_path_timer;
	struct timer_list mesh_path_root_timer;

	unsigned long wrkq_flags;
	unsigned long mbss_changed;

	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;
	struct beacon_data __rcu *beacon;
	const u8 *ie;
	u8 ie_len;
	enum {
		IEEE80211_MESH_SEC_NONE = 0x0,
		IEEE80211_MESH_SEC_AUTHED = 0x1,
		IEEE80211_MESH_SEC_SECURED = 0x2,
	} security;
	bool user_mpm;
	/* Extensible Synchronization Framework */
	const struct ieee80211_mesh_sync_ops *sync_ops;
	s64 sync_offset_clockdrift_max;
	spinlock_t sync_offset_lock;
	bool adjusting_tbtt;
	/* mesh power save */
	enum nl80211_mesh_power_mode nonpeer_pm;
	int ps_peers_light_sleep;
	int ps_peers_deep_sleep;
	struct ps_data ps;
	/* Channel Switching Support */
	struct mesh_csa_settings __rcu *csa;
	enum {
		IEEE80211_MESH_CSA_ROLE_NONE,
		IEEE80211_MESH_CSA_ROLE_INIT,
		IEEE80211_MESH_CSA_ROLE_REPEATER,
	} csa_role;
	u8 chsw_ttl;
	u16 pre_value;

	/* offset from skb->data while building IE */
	int meshconf_offset;

	struct mesh_table *mesh_paths;
	struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
	int mesh_paths_generation;
	int mpp_paths_generation;
};

#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_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_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
 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
 *	to offchannel, reset when offchannel returns
 */
enum ieee80211_sdata_state_bits {
	SDATA_STATE_RUNNING,
	SDATA_STATE_OFFCHANNEL,
	SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
};

/**
 * 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
};

/**
 * enum ieee80211_chanctx_replace_state - channel context replacement state
 *
 * This is used for channel context in-place reservations that require channel
 * context switch/swap.
 *
 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
 *	by a (not yet registered) channel context pointed by %replace_ctx.
 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
 *	replaces an existing channel context pointed to by %replace_ctx.
 */
enum ieee80211_chanctx_replace_state {
	IEEE80211_CHANCTX_REPLACE_NONE,
	IEEE80211_CHANCTX_WILL_BE_REPLACED,
	IEEE80211_CHANCTX_REPLACES_OTHER,
};

struct ieee80211_chanctx {
	struct list_head list;
	struct rcu_head rcu_head;

	struct list_head assigned_vifs;
	struct list_head reserved_vifs;

	enum ieee80211_chanctx_replace_state replace_state;
	struct ieee80211_chanctx *replace_ctx;

	enum ieee80211_chanctx_mode mode;
	bool driver_present;

	struct ieee80211_chanctx_conf conf;
};

struct mac80211_qos_map {
	struct cfg80211_qos_map qos_map;
	struct rcu_head rcu_head;
};

enum txq_info_flags {
	IEEE80211_TXQ_STOP,
	IEEE80211_TXQ_AMPDU,
	IEEE80211_TXQ_NO_AMSDU,
};

/**
 * struct txq_info - per tid queue
 *
 * @tin: contains packets split into multiple flows
 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
 *	a fq_flow which is already owned by a different tin
 * @def_cvars: codel vars for @def_flow
 */
struct txq_info {
	struct fq_tin tin;
	struct fq_flow def_flow;
	struct codel_vars def_cvars;
	unsigned long flags;

	/* keep last! */
	struct ieee80211_txq txq;
};

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;
	int crypto_tx_tailroom_pending_dec;
	struct delayed_work dec_tailroom_needed_wk;

	struct net_device *dev;
	struct ieee80211_local *local;

	unsigned int flags;

	unsigned long state;

	char name[IFNAMSIZ];

	/* 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;
	int encrypt_headroom;

	atomic_t num_tx_queued;
	struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
	struct mac80211_qos_map __rcu *qos_map;

	struct work_struct csa_finalize_work;
	bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
	struct cfg80211_chan_def csa_chandef;

	struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
	struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */

	/* context reservation -- protected with chanctx_mtx */
	struct ieee80211_chanctx *reserved_chanctx;
	struct cfg80211_chan_def reserved_chandef;
	bool reserved_radar_required;
	bool reserved_ready;

	/* used to reconfigure hardware SM PS */
	struct work_struct recalc_smps;

	struct work_struct work;
	struct sk_buff_head skb_queue;

	u8 needed_rx_chains;
	enum ieee80211_smps_mode smps_mode;

	int user_power_level; /* in dBm */
	int ap_power_level; /* in dBm */

	bool radar_required;
	struct delayed_work dfs_cac_timer_work;

	/*
	 * 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[NUM_NL80211_BANDS];

	bool rc_has_mcs_mask[NUM_NL80211_BANDS];
	u8  rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];

	bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
	u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];

	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;
		struct ieee80211_if_ocb ocb;
		u32 mntr_flags;
	} u;

#ifdef CONFIG_MAC80211_DEBUGFS
	struct {
		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 void sdata_lock(struct ieee80211_sub_if_data *sdata)
	__acquires(&sdata->wdev.mtx)
{
	mutex_lock(&sdata->wdev.mtx);
	__acquire(&sdata->wdev.mtx);
}

static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
	__releases(&sdata->wdev.mtx)
{
	mutex_unlock(&sdata->wdev.mtx);
	__release(&sdata->wdev.mtx);
}

#define sdata_dereference(p, sdata) \
	rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))

static inline void
sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
{
	lockdep_assert_held(&sdata->wdev.mtx);
}

static inline enum nl80211_band
ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
{
	enum nl80211_band band = NL80211_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;
}

static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
{
	switch (chandef->width) {
	case NL80211_CHAN_WIDTH_5:
		return 2;
	case NL80211_CHAN_WIDTH_10:
		return 1;
	default:
		return 0;
	}
}

static inline int
ieee80211_vif_get_shift(struct ieee80211_vif *vif)
{
	struct ieee80211_chanctx_conf *chanctx_conf;
	int shift = 0;

	rcu_read_lock();
	chanctx_conf = rcu_dereference(vif->chanctx_conf);
	if (chanctx_conf)
		shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
	rcu_read_unlock();

	return shift;
}

struct ieee80211_rx_agg {
	u8 addr[ETH_ALEN];
	u16 tid;
};

enum sdata_queue_type {
	IEEE80211_SDATA_QUEUE_TYPE_FRAME	= 0,
	IEEE80211_SDATA_QUEUE_AGG_START		= 1,
	IEEE80211_SDATA_QUEUE_AGG_STOP		= 2,
	IEEE80211_SDATA_QUEUE_RX_AGG_START	= 3,
	IEEE80211_SDATA_QUEUE_RX_AGG_STOP	= 4,
};

enum {
	IEEE80211_RX_MSG	= 1,
	IEEE80211_TX_STATUS_MSG	= 2,
};

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,
	IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
	IEEE80211_QUEUE_STOP_REASON_FLUSH,
	IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
	IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,

	IEEE80211_QUEUE_STOP_REASONS,
};

#ifdef CONFIG_MAC80211_LEDS
struct tpt_led_trigger {
	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.
 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
 *	cancelled.
 */
enum {
	SCAN_SW_SCANNING,
	SCAN_HW_SCANNING,
	SCAN_ONCHANNEL_SCANNING,
	SCAN_COMPLETED,
	SCAN_ABORTED,
	SCAN_HW_CANCELLED,
};

/**
 * 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;

	struct fq fq;
	struct codel_vars *cvars;
	struct codel_params cparams;
	struct codel_stats cstats;

	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];
	int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
	/* 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;

	struct work_struct radar_detected_work;

	/* 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;

	spinlock_t rx_path_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 rhashtable sta_hash;
	struct timer_list sta_cleanup;
	int sta_generation;

	struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
	struct tasklet_struct tx_pending_tasklet;

	atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];

	/* number of interfaces with allmulti RX */
	atomic_t iff_allmultis;

	struct rate_control_ref *rate_ctrl;

	struct crypto_cipher *wep_tx_tfm;
	struct crypto_cipher *wep_rx_tfm;
	u32 wep_iv;

	/* see iface.c */
	struct list_head interfaces;
	struct mutex iflist_mtx;

	/*
	 * Key mutex, protects sdata's key_list and sta_info's
	 * key pointers (write access, they're RCU.)
	 */
	struct mutex key_mtx;

	/* mutex for scan and work locking */
	struct mutex mtx;

	/* Scanning and BSS list */
	unsigned long scanning;
	struct cfg80211_ssid scan_ssid;
	struct cfg80211_scan_request *int_scan_req;
	struct cfg80211_scan_request __rcu *scan_req;
	struct ieee80211_scan_request *hw_scan_req;
	struct cfg80211_chan_def scan_chandef;
	enum nl80211_band hw_scan_band;
	int scan_channel_idx;
	int scan_ies_len;
	int hw_scan_ies_bufsize;
	struct cfg80211_scan_info scan_info;

	struct work_struct sched_scan_stopped_work;
	struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
	struct cfg80211_sched_scan_request __rcu *sched_scan_req;
	u8 scan_addr[ETH_ALEN];

	unsigned long leave_oper_channel_time;
	enum mac80211_scan_state next_scan_state;
	struct delayed_work scan_work;
	struct ieee80211_sub_if_data __rcu *scan_sdata;
	/* For backward compatibility only -- do not use */
	struct cfg80211_chan_def _oper_chandef;

	/* Temporary remain-on-channel for off-channel operations */
	struct ieee80211_channel *tmp_channel;

	/* channel contexts */
	struct list_head chanctx_list;
	struct mutex chanctx_mtx;

#ifdef CONFIG_MAC80211_LEDS
	struct led_trigger tx_led, rx_led, assoc_led, radio_led;
	struct led_trigger tpt_led;
	atomic_t tx_led_active, rx_led_active, assoc_led_active;
	atomic_t radio_led_active, tpt_led_active;
	struct tpt_led_trigger *tpt_led_trigger;
#endif

#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
	/* SNMP counters */
	/* dot11CountersTable */
	u32 dot11TransmittedFragmentCount;
	u32 dot11MulticastTransmittedFrameCount;
	u32 dot11FailedCount;
	u32 dot11RetryCount;
	u32 dot11MultipleRetryCount;
	u32 dot11FrameDuplicateCount;
	u32 dot11ReceivedFragmentCount;
	u32 dot11MulticastReceivedFrameCount;
	u32 dot11TransmittedFrameCount;

	/* TX/RX handler statistics */
	unsigned int tx_handlers_drop;
	unsigned int tx_handlers_queued;
	unsigned int tx_handlers_drop_wep;
	unsigned int tx_handlers_drop_not_assoc;
	unsigned int tx_handlers_drop_unauth_port;
	unsigned int rx_handlers_drop;
	unsigned int rx_handlers_queued;
	unsigned int rx_handlers_drop_nullfunc;
	unsigned int rx_handlers_drop_defrag;
	unsigned int tx_expand_skb_head;
	unsigned int tx_expand_skb_head_cloned;
	unsigned int rx_expand_skb_head_defrag;
	unsigned int rx_handlers_fragments;
	unsigned int tx_status_drop;
#define I802_DEBUG_INC(c) (c)++
#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
#define I802_DEBUG_INC(c) do { } while (0)
#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */


	int total_ps_buffered; /* total number of all buffered unicast and
				* multicast packets for power saving stations
				*/

	bool pspolling;
	bool offchannel_ps_enabled;
	/*
	 * PS can only be enabled when we have exactly one managed
	 * interface (and monitors) in PS, this then points there.
	 */
	struct ieee80211_sub_if_data *ps_sdata;
	struct work_struct dynamic_ps_enable_work;
	struct work_struct dynamic_ps_disable_work;
	struct timer_list dynamic_ps_timer;
	struct notifier_block ifa_notifier;
	struct notifier_block ifa6_notifier;

	/*
	 * The dynamic ps timeout configured from user space via WEXT -
	 * this will override whatever chosen by mac80211 internally.
	 */
	int dynamic_ps_forced_timeout;

	int user_power_level; /* in dBm, for all interfaces */

	enum ieee80211_smps_mode smps_mode;

	struct work_struct restart_work;

#ifdef CONFIG_MAC80211_DEBUGFS
	struct local_debugfsdentries {
		struct dentry *rcdir;
		struct dentry *keys;
	} debugfs;
#endif

	/*
	 * Remain-on-channel support
	 */
	struct delayed_work roc_work;
	struct list_head roc_list;
	struct work_struct hw_roc_start, hw_roc_done;
	unsigned long hw_roc_start_time;
	u64 roc_cookie_counter;

	struct idr ack_status_frames;
	spinlock_t ack_status_lock;

	struct ieee80211_sub_if_data __rcu *p2p_sdata;

	/* virtual monitor interface */
	struct ieee80211_sub_if_data __rcu *monitor_sdata;
	struct cfg80211_chan_def monitor_chandef;

	/* extended capabilities provided by mac80211 */
	u8 ext_capa[8];

	/* TDLS channel switch */
	struct work_struct tdls_chsw_work;
	struct sk_buff_head skb_queue_tdls_chsw;
};

static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
{
	return netdev_priv(dev);
}

static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
{
	return container_of(wdev, struct ieee80211_sub_if_data, wdev);
}

/* this struct represents 802.11n's RA/TID combination */
struct ieee80211_ra_tid {
	u8 ra[ETH_ALEN];
	u16 tid;
};

/* this struct holds the value parsing from channel switch IE  */
struct ieee80211_csa_ie {
	struct cfg80211_chan_def chandef;
	u8 mode;
	u8 count;
	u8 ttl;
	u16 pre_value;
};

/* Parsed Information Elements */
struct ieee802_11_elems {
	const u8 *ie_start;
	size_t total_len;

	/* pointers to IEs */
	const struct ieee80211_tdls_lnkie *lnk_id;
	const struct ieee80211_ch_switch_timing *ch_sw_timing;
	const u8 *ext_capab;
	const u8 *ssid;
	const u8 *supp_rates;
	const u8 *ds_params;
	const struct ieee80211_tim_ie *tim;
	const u8 *challenge;
	const u8 *rsn;
	const u8 *erp_info;
	const u8 *ext_supp_rates;
	const u8 *wmm_info;
	const u8 *wmm_param;
	const struct ieee80211_ht_cap *ht_cap_elem;
	const struct ieee80211_ht_operation *ht_operation;
	const struct ieee80211_vht_cap *vht_cap_elem;
	const struct ieee80211_vht_operation *vht_operation;
	const struct ieee80211_meshconf_ie *mesh_config;
	const u8 *mesh_id;
	const u8 *peering;
	const __le16 *awake_window;
	const u8 *preq;
	const u8 *prep;
	const u8 *perr;
	const struct ieee80211_rann_ie *rann;
	const struct ieee80211_channel_sw_ie *ch_switch_ie;
	const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
	const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
	const u8 *country_elem;
	const u8 *pwr_constr_elem;
	const u8 *cisco_dtpc_elem;
	const struct ieee80211_timeout_interval_ie *timeout_int;
	const u8 *opmode_notif;
	const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
	const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;

	/* length of them, respectively */
	u8 ext_capab_len;
	u8 ssid_len;
	u8 supp_rates_len;
	u8 tim_len;
	u8 challenge_len;
	u8 rsn_len;
	u8 ext_supp_rates_len;
	u8 wmm_info_len;
	u8 wmm_param_len;
	u8 mesh_id_len;
	u8 peering_len;
	u8 preq_len;
	u8 prep_len;
	u8 perr_len;
	u8 country_elem_len;

	/* whether a parse error occurred while retrieving these elements */
	bool parse_error;
};

static inline struct ieee80211_local *hw_to_local(
	struct ieee80211_hw *hw)
{
	return container_of(hw, struct ieee80211_local, hw);
}

static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
{
	return container_of(txq, struct txq_info, txq);
}

static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
{
	return ether_addr_equal(raddr, addr) ||
	       is_broadcast_ether_addr(raddr);
}

static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
{
	WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
		     status->flag & RX_FLAG_MACTIME_END);
	if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
		return true;
	/* can't handle HT/VHT preamble yet */
	if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
	    !(status->flag & (RX_FLAG_HT | RX_FLAG_VHT)))
		return true;
	return false;
}

u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
				     struct ieee80211_rx_status *status,
				     unsigned int mpdu_len,
				     unsigned int mpdu_offset);
int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
				      u32 changed);
void ieee80211_configure_filter(struct ieee80211_local *local);
u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);

u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
			     u64 *cookie, gfp_t gfp);

void ieee80211_check_fast_rx(struct sta_info *sta);
void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
void ieee80211_clear_fast_rx(struct sta_info *sta);

/* STA code */
void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
		       struct cfg80211_auth_request *req);
int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
			struct cfg80211_assoc_request *req);
int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
			 struct cfg80211_deauth_request *req);
int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
			   struct cfg80211_disassoc_request *req);
void ieee80211_send_pspoll(struct ieee80211_local *local,
			   struct ieee80211_sub_if_data *sdata);
void ieee80211_recalc_ps(struct ieee80211_local *local);
void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
				  struct sk_buff *skb);
void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
				  __le16 fc, bool acked);
void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);

/* IBSS code */
void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
			      const u8 *bssid, const u8 *addr, u32 supp_rates);
int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
			struct cfg80211_ibss_params *params);
int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
				   struct sk_buff *skb);
int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
			      struct cfg80211_csa_settings *csa_settings);
int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);

/* OCB code */
void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
			     const u8 *bssid, const u8 *addr, u32 supp_rates);
void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
		       struct ocb_setup *setup);
int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);

/* mesh code */
void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
				   struct sk_buff *skb);
int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
			      struct cfg80211_csa_settings *csa_settings);
int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);

/* scan/BSS handling */
void ieee80211_scan_work(struct work_struct *work);
int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
				const u8 *ssid, u8 ssid_len,
				struct ieee80211_channel **channels,
				unsigned int n_channels,
				enum nl80211_bss_scan_width scan_width);
int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
			   struct cfg80211_scan_request *req);
void ieee80211_scan_cancel(struct ieee80211_local *local);
void ieee80211_run_deferred_scan(struct ieee80211_local *local);
void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);

void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
struct ieee80211_bss *
ieee80211_bss_info_update(struct ieee80211_local *local,
			  struct ieee80211_rx_status *rx_status,
			  struct ieee80211_mgmt *mgmt,
			  size_t len,
			  struct ieee802_11_elems *elems,
			  struct ieee80211_channel *channel);
void ieee80211_rx_bss_put(struct ieee80211_local *local,
			  struct ieee80211_bss *bss);

/* scheduled scan handling */
int
__ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
				     struct cfg80211_sched_scan_request *req);
int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
				       struct cfg80211_sched_scan_request *req);
int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
void ieee80211_sched_scan_end(struct ieee80211_local *local);
void ieee80211_sched_scan_stopped_work(struct work_struct *work);

/* off-channel/mgmt-tx */
void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
void ieee80211_offchannel_return(struct ieee80211_local *local);
void ieee80211_roc_setup(struct ieee80211_local *local);
void ieee80211_start_next_roc(struct ieee80211_local *local);
void ieee80211_roc_purge(struct ieee80211_local *local,
			 struct ieee80211_sub_if_data *sdata);
int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
				struct ieee80211_channel *chan,
				unsigned int duration, u64 *cookie);
int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
				       struct wireless_dev *wdev, u64 cookie);
int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
		      struct cfg80211_mgmt_tx_params *params, u64 *cookie);
int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
				  struct wireless_dev *wdev, u64 cookie);

/* channel switch handling */
void ieee80211_csa_finalize_work(struct work_struct *work);
int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
			     struct cfg80211_csa_settings *params);

/* interface handling */
int ieee80211_iface_init(void);
void ieee80211_iface_exit(void);
int ieee80211_if_add(struct ieee80211_local *local, const char *name,
		     unsigned char name_assign_type,
		     struct wireless_dev **new_wdev, enum nl80211_iftype type,
		     struct vif_params *params);
int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
			     enum nl80211_iftype type);
void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
void ieee80211_remove_interfaces(struct ieee80211_local *local);
u32 ieee80211_idle_off(struct ieee80211_local *local);
void ieee80211_recalc_idle(struct ieee80211_local *local);
void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
				    const int offset);
int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
void ieee80211_del_virtual_monitor(struct ieee80211_local *local);

bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
			      bool update_bss);

static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
{
	return test_bit(SDATA_STATE_RUNNING, &sdata->state);
}

/* tx handling */
void ieee80211_clear_tx_pending(struct ieee80211_local *local);
void ieee80211_tx_pending(unsigned long data);
netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
					 struct net_device *dev);
netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
				       struct net_device *dev);
void __ieee80211_subif_start_xmit(struct sk_buff *skb,
				  struct net_device *dev,
				  u32 info_flags);
void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
			      struct sk_buff_head *skbs);
struct sk_buff *
ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
			      struct sk_buff *skb, u32 info_flags);
void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
			  struct ieee80211_supported_band *sband,
			  int retry_count, int shift, bool send_to_cooked);

void ieee80211_check_fast_xmit(struct sta_info *sta);
void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
void ieee80211_clear_fast_xmit(struct sta_info *sta);

/* HT */
void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
				     struct ieee80211_sta_ht_cap *ht_cap);
bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
				       struct ieee80211_supported_band *sband,
				       const struct ieee80211_ht_cap *ht_cap_ie,
				       struct sta_info *sta);
void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
			  const u8 *da, u16 tid,
			  u16 initiator, u16 reason_code);
int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
			       enum ieee80211_smps_mode smps, const u8 *da,
			       const u8 *bssid);
void ieee80211_request_smps_ap_work(struct work_struct *work);
void ieee80211_request_smps_mgd_work(struct work_struct *work);
bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
				   enum ieee80211_smps_mode smps_mode_new);

void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
				     u16 initiator, u16 reason, bool stop);
void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
				    u16 initiator, u16 reason, bool stop);
void __ieee80211_start_rx_ba_session(struct sta_info *sta,
				     u8 dialog_token, u16 timeout,
				     u16 start_seq_num, u16 ba_policy, u16 tid,
				     u16 buf_size, bool tx, bool auto_seq);
void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
					 enum ieee80211_agg_stop_reason reason);
void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
			     struct sta_info *sta,
			     struct ieee80211_mgmt *mgmt, size_t len);
void ieee80211_process_addba_resp(struct ieee80211_local *local,
				  struct sta_info *sta,
				  struct ieee80211_mgmt *mgmt,
				  size_t len);
void ieee80211_process_addba_request(struct ieee80211_local *local,
				     struct sta_info *sta,
				     struct ieee80211_mgmt *mgmt,
				     size_t len);

int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
				   enum ieee80211_agg_stop_reason reason);
int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
				    enum ieee80211_agg_stop_reason reason);
void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
void ieee80211_ba_session_work(struct work_struct *work);
void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);

u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);

/* VHT */
void
ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
				    struct ieee80211_supported_band *sband,
				    const struct ieee80211_vht_cap *vht_cap_ie,
				    struct sta_info *sta);
enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
void ieee80211_sta_set_rx_nss(struct sta_info *sta);
enum ieee80211_sta_rx_bandwidth
ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
void ieee80211_sta_set_rx_nss(struct sta_info *sta);
void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
				 struct ieee80211_mgmt *mgmt);
u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
                                  struct sta_info *sta, u8 opmode,
				  enum nl80211_band band);
void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
				 struct sta_info *sta, u8 opmode,
				 enum nl80211_band band);
void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
				      struct ieee80211_sta_vht_cap *vht_cap);
void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
				     u16 vht_mask[NL80211_VHT_NSS_MAX]);

/* Spectrum management */
void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
				       struct ieee80211_mgmt *mgmt,
				       size_t len);
/**
 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
 * @sdata: the sdata of the interface which has received the frame
 * @elems: parsed 802.11 elements received with the frame
 * @current_band: indicates the current band
 * @sta_flags: contains information about own capabilities and restrictions
 *	to decide which channel switch announcements can be accepted. Only the
 *	following subset of &enum ieee80211_sta_flags are evaluated:
 *	%IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
 *	%IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
 *	%IEEE80211_STA_DISABLE_160MHZ.
 * @bssid: the currently connected bssid (for reporting)
 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
	All of them will be filled with if success only.
 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
 */
int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
				 struct ieee802_11_elems *elems,
				 enum nl80211_band current_band,
				 u32 sta_flags, u8 *bssid,
				 struct ieee80211_csa_ie *csa_ie);

/* Suspend/resume and hw reconfiguration */
int ieee80211_reconfig(struct ieee80211_local *local);
void ieee80211_stop_device(struct ieee80211_local *local);

int __ieee80211_suspend(struct ieee80211_hw *hw,
			struct cfg80211_wowlan *wowlan);

static inline int __ieee80211_resume(struct ieee80211_hw *hw)
{
	struct ieee80211_local *local = hw_to_local(hw);

	WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
	     !test_bit(SCAN_COMPLETED, &local->scanning),
		"%s: resume with hardware scan still in progress\n",
		wiphy_name(hw->wiphy));

	return ieee80211_reconfig(hw_to_local(hw));
}

/* utility functions/constants */
extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
int ieee80211_frame_duration(enum nl80211_band band, size_t len,
			     int rate, int erp, int short_preamble,
			     int shift);
void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
			       bool bss_notify, bool enable_qos);
void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
		    struct sta_info *sta, struct sk_buff *skb);

void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
				 struct sk_buff *skb, int tid,
				 enum nl80211_band band);

static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
			  struct sk_buff *skb, int tid,
			  enum nl80211_band band)
{
	rcu_read_lock();
	__ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
	rcu_read_unlock();
}

static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
					struct sk_buff *skb, int tid)
{
	struct ieee80211_chanctx_conf *chanctx_conf;

	rcu_read_lock();
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (WARN_ON(!chanctx_conf)) {
		rcu_read_unlock();
		kfree_skb(skb);
		return;
	}

	__ieee80211_tx_skb_tid_band(sdata, skb, tid,
				    chanctx_conf->def.chan->band);
	rcu_read_unlock();
}

static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
				    struct sk_buff *skb)
{
	/* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
	ieee80211_tx_skb_tid(sdata, skb, 7);
}

u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
			       struct ieee802_11_elems *elems,
			       u64 filter, u32 crc);
static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
					  bool action,
					  struct ieee802_11_elems *elems)
{
	ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
}


extern const int ieee802_1d_to_ac[8];

static inline int ieee80211_ac_from_tid(int tid)
{
	return ieee802_1d_to_ac[tid & 7];
}

void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
void ieee80211_dynamic_ps_timer(unsigned long data);
void ieee80211_send_nullfunc(struct ieee80211_local *local,
			     struct ieee80211_sub_if_data *sdata,
			     bool powersave);
void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
			     struct ieee80211_hdr *hdr);
void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
			     struct ieee80211_hdr *hdr, bool ack, u16 tx_time);

void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
				     unsigned long queues,
				     enum queue_stop_reason reason,
				     bool refcounted);
void ieee80211_stop_vif_queues(struct ieee80211_local *local,
			       struct ieee80211_sub_if_data *sdata,
			       enum queue_stop_reason reason);
void ieee80211_wake_vif_queues(struct ieee80211_local *local,
			       struct ieee80211_sub_if_data *sdata,
			       enum queue_stop_reason reason);
void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
				     unsigned long queues,
				     enum queue_stop_reason reason,
				     bool refcounted);
void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
				    enum queue_stop_reason reason,
				    bool refcounted);
void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
				    enum queue_stop_reason reason,
				    bool refcounted);
void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
void ieee80211_add_pending_skb(struct ieee80211_local *local,
			       struct sk_buff *skb);
void ieee80211_add_pending_skbs(struct ieee80211_local *local,
				struct sk_buff_head *skbs);
void ieee80211_flush_queues(struct ieee80211_local *local,
			    struct ieee80211_sub_if_data *sdata, bool drop);
void __ieee80211_flush_queues(struct ieee80211_local *local,
			      struct ieee80211_sub_if_data *sdata,
			      unsigned int queues, bool drop);

static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
{
	/*
	 * If quiescing is set, we are racing with __ieee80211_suspend.
	 * __ieee80211_suspend flushes the workers after setting quiescing,
	 * and we check quiescing / suspended before enqueing new workers.
	 * We should abort the worker to avoid the races below.
	 */
	if (local->quiescing)
		return false;

	/*
	 * We might already be suspended if the following scenario occurs:
	 * __ieee80211_suspend		Control path
	 *
	 *				if (local->quiescing)
	 *					return;
	 * local->quiescing = true;
	 * flush_workqueue();
	 *				queue_work(...);
	 * local->suspended = true;
	 * local->quiescing = false;
	 *				worker starts running...
	 */
	if (local->suspended)
		return false;

	return true;
}

int ieee80211_txq_setup_flows(struct ieee80211_local *local);
void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
			struct sta_info *sta,
			struct txq_info *txq, int tid);
void ieee80211_txq_purge(struct ieee80211_local *local,
			 struct txq_info *txqi);
void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
			 u16 transaction, u16 auth_alg, u16 status,
			 const u8 *extra, size_t extra_len, const u8 *bssid,
			 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
			 u32 tx_flags);
void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
				    const u8 *bssid, u16 stype, u16 reason,
				    bool send_frame, u8 *frame_buf);
int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
			     size_t buffer_len,
			     struct ieee80211_scan_ies *ie_desc,
			     const u8 *ie, size_t ie_len,
			     u8 bands_used, u32 *rate_masks,
			     struct cfg80211_chan_def *chandef);
struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
					  const u8 *src, const u8 *dst,
					  u32 ratemask,
					  struct ieee80211_channel *chan,
					  const u8 *ssid, size_t ssid_len,
					  const u8 *ie, size_t ie_len,
					  bool directed);
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
			      const u8 *src, const u8 *dst,
			      const u8 *ssid, size_t ssid_len,
			      const u8 *ie, size_t ie_len,
			      u32 ratemask, bool directed, u32 tx_flags,
			      struct ieee80211_channel *channel, bool scan);

u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
			    struct ieee802_11_elems *elems,
			    enum nl80211_band band, u32 *basic_rates);
int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
				 enum ieee80211_smps_mode smps_mode);
int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
				enum ieee80211_smps_mode smps_mode);
void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);

size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
			      u16 cap);
u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
			       const struct cfg80211_chan_def *chandef,
			       u16 prot_mode, bool rifs_mode);
u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
			       u32 cap);
u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
				const struct cfg80211_chan_def *chandef);
int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
			     const struct ieee80211_supported_band *sband,
			     const u8 *srates, int srates_len, u32 *rates);
int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
			    struct sk_buff *skb, bool need_basic,
			    enum nl80211_band band);
int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
				struct sk_buff *skb, bool need_basic,
				enum nl80211_band band);
u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);

/* channel management */
bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
			       struct cfg80211_chan_def *chandef);
bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper,
				struct cfg80211_chan_def *chandef);
u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);

int __must_check
ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
			  const struct cfg80211_chan_def *chandef,
			  enum ieee80211_chanctx_mode mode);
int __must_check
ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
			      const struct cfg80211_chan_def *chandef,
			      enum ieee80211_chanctx_mode mode,
			      bool radar_required);
int __must_check
ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);

int __must_check
ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
			       const struct cfg80211_chan_def *chandef,
			       u32 *changed);
void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
					 bool clear);
int ieee80211_chanctx_refcount(struct ieee80211_local *local,
			       struct ieee80211_chanctx *ctx);

void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
				   struct ieee80211_chanctx *chanctx);
void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
				      struct ieee80211_chanctx *ctx);
bool ieee80211_is_radar_required(struct ieee80211_local *local);

void ieee80211_dfs_cac_timer(unsigned long data);
void ieee80211_dfs_cac_timer_work(struct work_struct *work);
void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
void ieee80211_dfs_radar_detected_work(struct work_struct *work);
int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
			      struct cfg80211_csa_settings *csa_settings);

bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
const struct ieee80211_cipher_scheme *
ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
		 enum nl80211_iftype iftype);
int ieee80211_cs_headroom(struct ieee80211_local *local,
			  struct cfg80211_crypto_settings *crypto,
			  enum nl80211_iftype iftype);
void ieee80211_recalc_dtim(struct ieee80211_local *local,
			   struct ieee80211_sub_if_data *sdata);
int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
				 const struct cfg80211_chan_def *chandef,
				 enum ieee80211_chanctx_mode chanmode,
				 u8 radar_detect);
int ieee80211_max_num_channels(struct ieee80211_local *local);
enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
				       struct ieee80211_chanctx *ctx);

/* TDLS */
int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
			const u8 *peer, u8 action_code, u8 dialog_token,
			u16 status_code, u32 peer_capability,
			bool initiator, const u8 *extra_ies,
			size_t extra_ies_len);
int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
			const u8 *peer, enum nl80211_tdls_operation oper);
void ieee80211_tdls_peer_del_work(struct work_struct *wk);
int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
				  const u8 *addr, u8 oper_class,
				  struct cfg80211_chan_def *chandef);
void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
					  struct net_device *dev,
					  const u8 *addr);
void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
void ieee80211_tdls_chsw_work(struct work_struct *wk);

extern const struct ethtool_ops ieee80211_ethtool_ops;

#ifdef CONFIG_MAC80211_NOINLINE
#define debug_noinline noinline
#else
#define debug_noinline
#endif

#endif /* IEEE80211_I_H */