summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
blob: a7a10e716e651702848f4da053126d0efdf648e6 (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
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
 * Copyright (C) 2012-2014, 2018-2024 Intel Corporation
 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
 * Copyright (C) 2015-2017 Intel Deutschland GmbH
 */
#include <linux/etherdevice.h>
#include <linux/crc32.h>
#include <net/mac80211.h>
#include "iwl-io.h"
#include "iwl-prph.h"
#include "fw-api.h"
#include "mvm.h"
#include "time-event.h"

const u8 iwl_mvm_ac_to_tx_fifo[] = {
	IWL_MVM_TX_FIFO_VO,
	IWL_MVM_TX_FIFO_VI,
	IWL_MVM_TX_FIFO_BE,
	IWL_MVM_TX_FIFO_BK,
};

const u8 iwl_mvm_ac_to_gen2_tx_fifo[] = {
	IWL_GEN2_EDCA_TX_FIFO_VO,
	IWL_GEN2_EDCA_TX_FIFO_VI,
	IWL_GEN2_EDCA_TX_FIFO_BE,
	IWL_GEN2_EDCA_TX_FIFO_BK,
	IWL_GEN2_TRIG_TX_FIFO_VO,
	IWL_GEN2_TRIG_TX_FIFO_VI,
	IWL_GEN2_TRIG_TX_FIFO_BE,
	IWL_GEN2_TRIG_TX_FIFO_BK,
};

const u8 iwl_mvm_ac_to_bz_tx_fifo[] = {
	IWL_BZ_EDCA_TX_FIFO_VO,
	IWL_BZ_EDCA_TX_FIFO_VI,
	IWL_BZ_EDCA_TX_FIFO_BE,
	IWL_BZ_EDCA_TX_FIFO_BK,
	IWL_BZ_TRIG_TX_FIFO_VO,
	IWL_BZ_TRIG_TX_FIFO_VI,
	IWL_BZ_TRIG_TX_FIFO_BE,
	IWL_BZ_TRIG_TX_FIFO_BK,
};

struct iwl_mvm_mac_iface_iterator_data {
	struct iwl_mvm *mvm;
	struct ieee80211_vif *vif;
	unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)];
	unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)];
	enum iwl_tsf_id preferred_tsf;
	bool found_vif;
};

static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac,
				    struct ieee80211_vif *vif)
{
	struct iwl_mvm_mac_iface_iterator_data *data = _data;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	u16 min_bi;

	/* Skip the interface for which we are trying to assign a tsf_id  */
	if (vif == data->vif)
		return;

	/*
	 * The TSF is a hardware/firmware resource, there are 4 and
	 * the driver should assign and free them as needed. However,
	 * there are cases where 2 MACs should share the same TSF ID
	 * for the purpose of clock sync, an optimization to avoid
	 * clock drift causing overlapping TBTTs/DTIMs for a GO and
	 * client in the system.
	 *
	 * The firmware will decide according to the MAC type which
	 * will be the leader and follower. Clients that need to sync
	 * with a remote station will be the leader, and an AP or GO
	 * will be the follower.
	 *
	 * Depending on the new interface type it can be following
	 * or become the leader of an existing interface.
	 */
	switch (data->vif->type) {
	case NL80211_IFTYPE_STATION:
		/*
		 * The new interface is a client, so if the one we're iterating
		 * is an AP, and the beacon interval of the AP is a multiple or
		 * divisor of the beacon interval of the client, the same TSF
		 * should be used to avoid drift between the new client and
		 * existing AP. The existing AP will get drift updates from the
		 * new client context in this case.
		 */
		if (vif->type != NL80211_IFTYPE_AP ||
		    data->preferred_tsf != NUM_TSF_IDS ||
		    !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
			break;

		min_bi = min(data->vif->bss_conf.beacon_int,
			     vif->bss_conf.beacon_int);

		if (!min_bi)
			break;

		if ((data->vif->bss_conf.beacon_int -
		     vif->bss_conf.beacon_int) % min_bi == 0) {
			data->preferred_tsf = mvmvif->tsf_id;
			return;
		}
		break;

	case NL80211_IFTYPE_AP:
		/*
		 * The new interface is AP/GO, so if its beacon interval is a
		 * multiple or a divisor of the beacon interval of an existing
		 * interface, it should get drift updates from an existing
		 * client or use the same TSF as an existing GO. There's no
		 * drift between TSFs internally but if they used different
		 * TSFs then a new client MAC could update one of them and
		 * cause drift that way.
		 */
		if ((vif->type != NL80211_IFTYPE_AP &&
		     vif->type != NL80211_IFTYPE_STATION) ||
		    data->preferred_tsf != NUM_TSF_IDS ||
		    !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
			break;

		min_bi = min(data->vif->bss_conf.beacon_int,
			     vif->bss_conf.beacon_int);

		if (!min_bi)
			break;

		if ((data->vif->bss_conf.beacon_int -
		     vif->bss_conf.beacon_int) % min_bi == 0) {
			data->preferred_tsf = mvmvif->tsf_id;
			return;
		}
		break;
	default:
		/*
		 * For all other interface types there's no need to
		 * take drift into account. Either they're exclusive
		 * like IBSS and monitor, or we don't care much about
		 * their TSF (like P2P Device), but we won't be able
		 * to share the TSF resource.
		 */
		break;
	}

	/*
	 * Unless we exited above, we can't share the TSF resource
	 * that the virtual interface we're iterating over is using
	 * with the new one, so clear the available bit and if this
	 * was the preferred one, reset that as well.
	 */
	__clear_bit(mvmvif->tsf_id, data->available_tsf_ids);

	if (data->preferred_tsf == mvmvif->tsf_id)
		data->preferred_tsf = NUM_TSF_IDS;
}

static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
				       struct ieee80211_vif *vif)
{
	struct iwl_mvm_mac_iface_iterator_data *data = _data;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

	/* Iterator may already find the interface being added -- skip it */
	if (vif == data->vif) {
		data->found_vif = true;
		return;
	}

	/* Mark MAC IDs as used by clearing the available bit, and
	 * (below) mark TSFs as used if their existing use is not
	 * compatible with the new interface type.
	 * No locking or atomic bit operations are needed since the
	 * data is on the stack of the caller function.
	 */
	__clear_bit(mvmvif->id, data->available_mac_ids);

	/* find a suitable tsf_id */
	iwl_mvm_mac_tsf_id_iter(_data, mac, vif);
}

void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,
				    struct ieee80211_vif *vif)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mvm_mac_iface_iterator_data data = {
		.mvm = mvm,
		.vif = vif,
		.available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
		/* no preference yet */
		.preferred_tsf = NUM_TSF_IDS,
	};

	ieee80211_iterate_active_interfaces_atomic(
		mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
		iwl_mvm_mac_tsf_id_iter, &data);

	if (data.preferred_tsf != NUM_TSF_IDS)
		mvmvif->tsf_id = data.preferred_tsf;
	else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids))
		mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
						NUM_TSF_IDS);
}

int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mvm_mac_iface_iterator_data data = {
		.mvm = mvm,
		.vif = vif,
		.available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
		.available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
		/* no preference yet */
		.preferred_tsf = NUM_TSF_IDS,
		.found_vif = false,
	};
	int ret, i;

	lockdep_assert_held(&mvm->mutex);

	/*
	 * Allocate a MAC ID and a TSF for this MAC, along with the queues
	 * and other resources.
	 */

	/*
	 * Before the iterator, we start with all MAC IDs and TSFs available.
	 *
	 * During iteration, all MAC IDs are cleared that are in use by other
	 * virtual interfaces, and all TSF IDs are cleared that can't be used
	 * by this new virtual interface because they're used by an interface
	 * that can't share it with the new one.
	 * At the same time, we check if there's a preferred TSF in the case
	 * that we should share it with another interface.
	 */

	/* MAC ID 0 should be used only for the managed/IBSS vif with non-MLO
	 * FW API
	 */
	if (!mvm->mld_api_is_used) {
		switch (vif->type) {
		case NL80211_IFTYPE_ADHOC:
			break;
		case NL80211_IFTYPE_STATION:
			if (!vif->p2p)
				break;
			fallthrough;
		default:
			__clear_bit(0, data.available_mac_ids);
		}
	}

	ieee80211_iterate_active_interfaces_atomic(
		mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
		iwl_mvm_mac_iface_iterator, &data);

	/*
	 * In the case we're getting here during resume, it's similar to
	 * firmware restart, and with RESUME_ALL the iterator will find
	 * the vif being added already.
	 * We don't want to reassign any IDs in either case since doing
	 * so would probably assign different IDs (as interfaces aren't
	 * necessarily added in the same order), but the old IDs were
	 * preserved anyway, so skip ID assignment for both resume and
	 * recovery.
	 */
	if (data.found_vif)
		return 0;

	/* Therefore, in recovery, we can't get here */
	if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
		return -EBUSY;

	mvmvif->id = find_first_bit(data.available_mac_ids,
				    NUM_MAC_INDEX_DRIVER);
	if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
		IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
		ret = -EIO;
		goto exit_fail;
	}

	if (data.preferred_tsf != NUM_TSF_IDS)
		mvmvif->tsf_id = data.preferred_tsf;
	else
		mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
						NUM_TSF_IDS);
	if (mvmvif->tsf_id == NUM_TSF_IDS) {
		IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
		ret = -EIO;
		goto exit_fail;
	}

	mvmvif->color = 0;

	INIT_LIST_HEAD(&mvmvif->time_event_data.list);
	mvmvif->time_event_data.id = TE_MAX;
	mvmvif->roc_activity = ROC_NUM_ACTIVITIES;

	mvmvif->deflink.bcast_sta.sta_id = IWL_MVM_INVALID_STA;
	mvmvif->deflink.mcast_sta.sta_id = IWL_MVM_INVALID_STA;
	mvmvif->deflink.ap_sta_id = IWL_MVM_INVALID_STA;

	/* No need to allocate data queues to P2P Device MAC and NAN.*/
	if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
		return 0;

	/* Allocate the CAB queue for softAP and GO interfaces */
	if (vif->type == NL80211_IFTYPE_AP ||
	    vif->type == NL80211_IFTYPE_ADHOC) {
		/*
		 * For TVQM this will be overwritten later with the FW assigned
		 * queue value (when queue is enabled).
		 */
		mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
	}

	for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
		mvmvif->deflink.smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;

	return 0;

exit_fail:
	memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
	return ret;
}

static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
			      struct ieee80211_vif *vif,
			      enum nl80211_band band,
			      u8 *cck_rates, u8 *ofdm_rates)
{
	struct ieee80211_supported_band *sband;
	unsigned long basic = vif->bss_conf.basic_rates;
	int lowest_present_ofdm = 100;
	int lowest_present_cck = 100;
	u8 cck = 0;
	u8 ofdm = 0;
	int i;

	sband = mvm->hw->wiphy->bands[band];

	for_each_set_bit(i, &basic, BITS_PER_LONG) {
		int hw = sband->bitrates[i].hw_value;
		if (hw >= IWL_FIRST_OFDM_RATE) {
			ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
			if (lowest_present_ofdm > hw)
				lowest_present_ofdm = hw;
		} else {
			BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);

			cck |= BIT(hw);
			if (lowest_present_cck > hw)
				lowest_present_cck = hw;
		}
	}

	/*
	 * Now we've got the basic rates as bitmaps in the ofdm and cck
	 * variables. This isn't sufficient though, as there might not
	 * be all the right rates in the bitmap. E.g. if the only basic
	 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
	 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
	 *
	 *    [...] a STA responding to a received frame shall transmit
	 *    its Control Response frame [...] at the highest rate in the
	 *    BSSBasicRateSet parameter that is less than or equal to the
	 *    rate of the immediately previous frame in the frame exchange
	 *    sequence ([...]) and that is of the same modulation class
	 *    ([...]) as the received frame. If no rate contained in the
	 *    BSSBasicRateSet parameter meets these conditions, then the
	 *    control frame sent in response to a received frame shall be
	 *    transmitted at the highest mandatory rate of the PHY that is
	 *    less than or equal to the rate of the received frame, and
	 *    that is of the same modulation class as the received frame.
	 *
	 * As a consequence, we need to add all mandatory rates that are
	 * lower than all of the basic rates to these bitmaps.
	 */

	if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
		ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
	if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
		ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
	/* 6M already there or needed so always add */
	ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;

	/*
	 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
	 * Note, however:
	 *  - if no CCK rates are basic, it must be ERP since there must
	 *    be some basic rates at all, so they're OFDM => ERP PHY
	 *    (or we're in 5 GHz, and the cck bitmap will never be used)
	 *  - if 11M is a basic rate, it must be ERP as well, so add 5.5M
	 *  - if 5.5M is basic, 1M and 2M are mandatory
	 *  - if 2M is basic, 1M is mandatory
	 *  - if 1M is basic, that's the only valid ACK rate.
	 * As a consequence, it's not as complicated as it sounds, just add
	 * any lower rates to the ACK rate bitmap.
	 */
	if (IWL_RATE_11M_INDEX < lowest_present_cck)
		cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
	if (IWL_RATE_5M_INDEX < lowest_present_cck)
		cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
	if (IWL_RATE_2M_INDEX < lowest_present_cck)
		cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
	/* 1M already there or needed so always add */
	cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;

	*cck_rates = cck;
	*ofdm_rates = ofdm;
}

void iwl_mvm_set_fw_basic_rates(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
				struct iwl_mvm_vif_link_info *link_info,
				__le32 *cck_rates, __le32 *ofdm_rates)
{
	struct iwl_mvm_phy_ctxt *phy_ctxt;
	u8 cck_ack_rates = 0, ofdm_ack_rates = 0;
	enum nl80211_band band = NL80211_BAND_2GHZ;

	phy_ctxt = link_info->phy_ctxt;
	if (phy_ctxt && phy_ctxt->channel)
		band = phy_ctxt->channel->band;

	iwl_mvm_ack_rates(mvm, vif, band, &cck_ack_rates, &ofdm_ack_rates);

	*cck_rates = cpu_to_le32((u32)cck_ack_rates);
	*ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
}

void iwl_mvm_set_fw_protection_flags(struct iwl_mvm *mvm,
				     struct ieee80211_vif *vif,
				     struct ieee80211_bss_conf *link_conf,
				     __le32 *protection_flags, u32 ht_flag,
				     u32 tgg_flag)
{
	/* for both sta and ap, ht_operation_mode hold the protection_mode */
	u8 protection_mode = link_conf->ht_operation_mode &
				 IEEE80211_HT_OP_MODE_PROTECTION;
	bool ht_enabled = !!(link_conf->ht_operation_mode &
			     IEEE80211_HT_OP_MODE_PROTECTION);

	if (link_conf->use_cts_prot)
		*protection_flags |= cpu_to_le32(tgg_flag);

	IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
		       link_conf->use_cts_prot,
		       link_conf->ht_operation_mode);

	if (!ht_enabled)
		return;

	IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
	/*
	 * See section 9.23.3.1 of IEEE 80211-2012.
	 * Nongreenfield HT STAs Present is not supported.
	 */
	switch (protection_mode) {
	case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
		break;
	case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
	case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
		*protection_flags |= cpu_to_le32(ht_flag);
		break;
	case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
		/* Protect when channel wider than 20MHz */
		if (link_conf->chanreq.oper.width > NL80211_CHAN_WIDTH_20)
			*protection_flags |= cpu_to_le32(ht_flag);
		break;
	default:
		IWL_ERR(mvm, "Illegal protection mode %d\n",
			protection_mode);
		break;
	}
}

void iwl_mvm_set_fw_qos_params(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
			       struct ieee80211_bss_conf *link_conf,
			       struct iwl_ac_qos *ac, __le32 *qos_flags)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mvm_vif_link_info *mvm_link =
		mvmvif->link[link_conf->link_id];
	int i;

	if (!mvm_link)
		return;

	for (i = 0; i < IEEE80211_NUM_ACS; i++) {
		u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i);
		u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);

		ac[ucode_ac].cw_min =
			cpu_to_le16(mvm_link->queue_params[i].cw_min);
		ac[ucode_ac].cw_max =
			cpu_to_le16(mvm_link->queue_params[i].cw_max);
		ac[ucode_ac].edca_txop =
			cpu_to_le16(mvm_link->queue_params[i].txop * 32);
		ac[ucode_ac].aifsn = mvm_link->queue_params[i].aifs;
		ac[ucode_ac].fifos_mask = BIT(txf);
	}

	if (link_conf->qos)
		*qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);

	if (link_conf->chanreq.oper.width != NL80211_CHAN_WIDTH_20_NOHT)
		*qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
}

int iwl_mvm_get_mac_type(struct ieee80211_vif *vif)
{
	u32 mac_type = FW_MAC_TYPE_BSS_STA;

	switch (vif->type) {
	case NL80211_IFTYPE_STATION:
		if (vif->p2p)
			mac_type = FW_MAC_TYPE_P2P_STA;
		else
			mac_type = FW_MAC_TYPE_BSS_STA;
		break;
	case NL80211_IFTYPE_AP:
		mac_type = FW_MAC_TYPE_GO;
		break;
	case NL80211_IFTYPE_MONITOR:
		mac_type = FW_MAC_TYPE_LISTENER;
		break;
	case NL80211_IFTYPE_P2P_DEVICE:
		mac_type = FW_MAC_TYPE_P2P_DEVICE;
		break;
	case NL80211_IFTYPE_ADHOC:
		mac_type = FW_MAC_TYPE_IBSS;
		break;
	default:
		WARN_ON_ONCE(1);
	}
	return mac_type;
}

static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
					struct ieee80211_vif *vif,
					struct iwl_mac_ctx_cmd *cmd,
					const u8 *bssid_override,
					u32 action)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
	u32 ht_flag;

	cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
							    mvmvif->color));
	cmd->action = cpu_to_le32(action);
	cmd->mac_type = cpu_to_le32(iwl_mvm_get_mac_type(vif));

	cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);

	memcpy(cmd->node_addr, vif->addr, ETH_ALEN);

	if (bssid)
		memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
	else
		eth_broadcast_addr(cmd->bssid_addr);

	iwl_mvm_set_fw_basic_rates(mvm, vif, &mvmvif->deflink, &cmd->cck_rates,
				   &cmd->ofdm_rates);

	cmd->cck_short_preamble =
		cpu_to_le32(vif->bss_conf.use_short_preamble ?
			    MAC_FLG_SHORT_PREAMBLE : 0);
	cmd->short_slot =
		cpu_to_le32(vif->bss_conf.use_short_slot ?
			    MAC_FLG_SHORT_SLOT : 0);

	cmd->filter_flags = 0;

	iwl_mvm_set_fw_qos_params(mvm, vif, &vif->bss_conf, cmd->ac,
				  &cmd->qos_flags);

	/* The fw does not distinguish between ht and fat */
	ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
	iwl_mvm_set_fw_protection_flags(mvm, vif, &vif->bss_conf,
					&cmd->protection_flags,
					ht_flag, MAC_PROT_FLG_TGG_PROTECT);
}

static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
				     struct iwl_mac_ctx_cmd *cmd)
{
	int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
				       sizeof(*cmd), cmd);
	if (ret)
		IWL_ERR(mvm, "Failed to send MAC_CONTEXT_CMD (action:%d): %d\n",
			le32_to_cpu(cmd->action), ret);
	return ret;
}

void iwl_mvm_set_fw_dtim_tbtt(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
			      struct ieee80211_bss_conf *link_conf,
			      __le64 *dtim_tsf, __le32 *dtim_time,
			      __le32 *assoc_beacon_arrive_time)
{
	u32 dtim_offs;

	/*
	 * The DTIM count counts down, so when it is N that means N
	 * more beacon intervals happen until the DTIM TBTT. Therefore
	 * add this to the current time. If that ends up being in the
	 * future, the firmware will handle it.
	 *
	 * Also note that the system_timestamp (which we get here as
	 * "sync_device_ts") and TSF timestamp aren't at exactly the
	 * same offset in the frame -- the TSF is at the first symbol
	 * of the TSF, the system timestamp is at signal acquisition
	 * time. This means there's an offset between them of at most
	 * a few hundred microseconds (24 * 8 bits + PLCP time gives
	 * 384us in the longest case), this is currently not relevant
	 * as the firmware wakes up around 2ms before the TBTT.
	 */
	dtim_offs = link_conf->sync_dtim_count *
			link_conf->beacon_int;
	/* convert TU to usecs */
	dtim_offs *= 1024;

	*dtim_tsf =
		cpu_to_le64(link_conf->sync_tsf + dtim_offs);
	*dtim_time =
		cpu_to_le32(link_conf->sync_device_ts + dtim_offs);
	*assoc_beacon_arrive_time =
		cpu_to_le32(link_conf->sync_device_ts);

	IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
		       le64_to_cpu(*dtim_tsf),
		       le32_to_cpu(*dtim_time),
		       dtim_offs);
}

__le32 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(struct iwl_mvm *mvm,
						    struct ieee80211_vif *vif)
{
	struct ieee80211_p2p_noa_attr *noa =
		&vif->bss_conf.p2p_noa_attr;

	return cpu_to_le32(noa->oppps_ctwindow &
			IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
}

u32 iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(struct iwl_mvm *mvm,
					    struct ieee80211_vif *vif)
{
	u32 twt_policy = 0;

	if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT)
		twt_policy |= TWT_SUPPORTED;
	if (vif->bss_conf.twt_protected)
		twt_policy |= PROTECTED_TWT_SUPPORTED;
	if (vif->bss_conf.twt_broadcast)
		twt_policy |= BROADCAST_TWT_SUPPORTED;

	return twt_policy;
}

static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
				    struct ieee80211_vif *vif,
				    u32 action, bool force_assoc_off,
				    const u8 *bssid_override)
{
	struct iwl_mac_ctx_cmd cmd = {};
	struct iwl_mac_data_sta *ctxt_sta;

	WARN_ON(vif->type != NL80211_IFTYPE_STATION);

	/* Fill the common data for all mac context types */
	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);

	/*
	 * We always want to hear MCAST frames, if we're not authorized yet,
	 * we'll drop them.
	 */
	cmd.filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP);

	if (vif->p2p) {
		cmd.p2p_sta.ctwin =
			iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(mvm, vif);

		ctxt_sta = &cmd.p2p_sta.sta;
	} else {
		ctxt_sta = &cmd.sta;
	}

	/* We need the dtim_period to set the MAC as associated */
	if (vif->cfg.assoc && vif->bss_conf.dtim_period &&
	    !force_assoc_off) {
		struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

		iwl_mvm_set_fw_dtim_tbtt(mvm, vif, &vif->bss_conf,
					 &ctxt_sta->dtim_tsf,
					 &ctxt_sta->dtim_time,
					 &ctxt_sta->assoc_beacon_arrive_time);

		ctxt_sta->is_assoc = cpu_to_le32(1);

		if (!mvmvif->authorized &&
		    fw_has_capa(&mvm->fw->ucode_capa,
				IWL_UCODE_TLV_CAPA_COEX_HIGH_PRIO))
			ctxt_sta->data_policy |=
				cpu_to_le32(COEX_HIGH_PRIORITY_ENABLE);
	} else {
		ctxt_sta->is_assoc = cpu_to_le32(0);

		/* Allow beacons to pass through as long as we are not
		 * associated, or we do not have dtim period information.
		 */
		cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
	}

	ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
	ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
					      vif->bss_conf.dtim_period);

	ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
	ctxt_sta->assoc_id = cpu_to_le32(vif->cfg.aid);

	if (vif->probe_req_reg && vif->cfg.assoc && vif->p2p)
		cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);

	if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) {
		cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX);
		ctxt_sta->data_policy |=
			cpu_to_le32(iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(mvm, vif));
	}


	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
}

static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
					 struct ieee80211_vif *vif,
					 u32 action)
{
	struct iwl_mac_ctx_cmd cmd = {};
	u32 tfd_queue_msk = 0;
	int ret;

	WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);

	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);

	cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
				       MAC_FILTER_IN_CONTROL_AND_MGMT |
				       MAC_FILTER_IN_BEACON |
				       MAC_FILTER_IN_PROBE_REQUEST |
				       MAC_FILTER_IN_CRC32 |
				       MAC_FILTER_ACCEPT_GRP);
	ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);

	/*
	 * the queue mask is only relevant for old TX API, and
	 * mvm->snif_queue isn't set here (it's still set to
	 * IWL_MVM_INVALID_QUEUE so the BIT() of it is UB)
	 */
	if (!iwl_mvm_has_new_tx_api(mvm))
		tfd_queue_msk = BIT(mvm->snif_queue);

	/* Allocate sniffer station */
	ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk,
				       vif->type, IWL_STA_GENERAL_PURPOSE);
	if (ret)
		return ret;

	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
}

static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
				     struct ieee80211_vif *vif,
				     u32 action)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mac_ctx_cmd cmd = {};

	WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);

	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);

	cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
				       MAC_FILTER_IN_PROBE_REQUEST |
				       MAC_FILTER_ACCEPT_GRP);

	/* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
	cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);

	/* TODO: Assumes that the beacon id == mac context id */
	cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);

	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
}

struct iwl_mvm_go_iterator_data {
	bool go_active;
};

static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
{
	struct iwl_mvm_go_iterator_data *data = _data;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

	if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
	    mvmvif->ap_ibss_active)
		data->go_active = true;
}

__le32 iwl_mac_ctxt_p2p_dev_has_extended_disc(struct iwl_mvm *mvm,
					      struct ieee80211_vif *vif)
{
	struct iwl_mvm_go_iterator_data data = {};

	/*
	 * This flag should be set to true when the P2P Device is
	 * discoverable and there is at least another active P2P GO. Settings
	 * this flag will allow the P2P Device to be discoverable on other
	 * channels in addition to its listen channel.
	 * Note that this flag should not be set in other cases as it opens the
	 * Rx filters on all MAC and increases the number of interrupts.
	 */
	ieee80211_iterate_active_interfaces_atomic(
		mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
		iwl_mvm_go_iterator, &data);

	return cpu_to_le32(data.go_active ? 1 : 0);
}

static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
					   struct ieee80211_vif *vif,
					   u32 action)
{
	struct iwl_mac_ctx_cmd cmd = {};

	WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);

	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);

	cmd.p2p_dev.is_disc_extended =
		iwl_mac_ctxt_p2p_dev_has_extended_disc(mvm, vif);

	/* Override the filter flags to accept only probe requests */
	cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);

	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
}

void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
			      __le32 *tim_index, __le32 *tim_size,
			      u8 *beacon, u32 frame_size)
{
	u32 tim_idx;
	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;

	/* The index is relative to frame start but we start looking at the
	 * variable-length part of the beacon. */
	tim_idx = mgmt->u.beacon.variable - beacon;

	/* Parse variable-length elements of beacon to find WLAN_EID_TIM */
	while ((tim_idx < (frame_size - 2)) &&
			(beacon[tim_idx] != WLAN_EID_TIM))
		tim_idx += beacon[tim_idx+1] + 2;

	/* If TIM field was found, set variables */
	if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
		*tim_index = cpu_to_le32(tim_idx);
		*tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]);
	} else {
		IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
	}
}

u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size)
{
	struct ieee80211_mgmt *mgmt = (void *)beacon;
	const u8 *ie;

	if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon)))
		return 0;

	frame_size -= mgmt->u.beacon.variable - beacon;

	ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size);
	if (!ie)
		return 0;

	return ie - beacon;
}

u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm,
				    struct ieee80211_tx_info *info,
				    struct ieee80211_vif *vif)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct ieee80211_supported_band *sband;
	unsigned long basic = vif->bss_conf.basic_rates;
	u16 lowest_cck = IWL_RATE_COUNT, lowest_ofdm = IWL_RATE_COUNT;
	u32 link_id = u32_get_bits(info->control.flags,
				   IEEE80211_TX_CTRL_MLO_LINK);
	u8 band = info->band;
	u8 rate;
	u32 i;

	if (link_id == IEEE80211_LINK_UNSPECIFIED && ieee80211_vif_is_mld(vif)) {
		for (i = 0; i < ARRAY_SIZE(mvmvif->link); i++) {
			if (!mvmvif->link[i])
				continue;
			/* shouldn't do this when >1 link is active */
			WARN_ON_ONCE(link_id != IEEE80211_LINK_UNSPECIFIED);
			link_id = i;
		}
	}

	if (link_id < IEEE80211_LINK_UNSPECIFIED) {
		struct ieee80211_bss_conf *link_conf;

		rcu_read_lock();
		link_conf = rcu_dereference(vif->link_conf[link_id]);
		if (link_conf) {
			basic = link_conf->basic_rates;
			if (link_conf->chanreq.oper.chan)
				band = link_conf->chanreq.oper.chan->band;
		}
		rcu_read_unlock();
	}

	sband = mvm->hw->wiphy->bands[band];
	for_each_set_bit(i, &basic, BITS_PER_LONG) {
		u16 hw = sband->bitrates[i].hw_value;

		if (hw >= IWL_FIRST_OFDM_RATE) {
			if (lowest_ofdm > hw)
				lowest_ofdm = hw;
		} else if (lowest_cck > hw) {
			lowest_cck = hw;
		}
	}

	if (band == NL80211_BAND_2GHZ && !vif->p2p &&
	    vif->type != NL80211_IFTYPE_P2P_DEVICE &&
	    !(info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)) {
		if (lowest_cck != IWL_RATE_COUNT)
			rate = lowest_cck;
		else if (lowest_ofdm != IWL_RATE_COUNT)
			rate = lowest_ofdm;
		else
			rate = IWL_RATE_1M_INDEX;
	} else if (lowest_ofdm != IWL_RATE_COUNT) {
		rate = lowest_ofdm;
	} else {
		rate = IWL_RATE_6M_INDEX;
	}

	return rate;
}

u16 iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw *fw, u8 rate_idx)
{
	u16 flags = iwl_mvm_mac80211_idx_to_hwrate(fw, rate_idx);
	bool is_new_rate = iwl_fw_lookup_cmd_ver(fw, BEACON_TEMPLATE_CMD, 0) > 10;

	if (rate_idx <= IWL_FIRST_CCK_RATE)
		flags |= is_new_rate ? IWL_MAC_BEACON_CCK
			  : IWL_MAC_BEACON_CCK_V1;

	return flags;
}

u8 iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm *mvm,
				    struct ieee80211_tx_info *info,
				    struct ieee80211_vif *vif)
{
	struct ieee80211_supported_band *sband =
		mvm->hw->wiphy->bands[info->band];
	u32 legacy = vif->bss_conf.beacon_tx_rate.control[info->band].legacy;

	/* if beacon rate was configured try using it */
	if (hweight32(legacy) == 1) {
		u32 rate = ffs(legacy) - 1;

		return sband->bitrates[rate].hw_value;
	}

	return iwl_mvm_mac_ctxt_get_lowest_rate(mvm, info, vif);
}

static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm,
				    struct ieee80211_vif *vif,
				    struct sk_buff *beacon,
				    struct iwl_tx_cmd *tx)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct ieee80211_tx_info *info;
	u8 rate;
	u32 tx_flags;

	info = IEEE80211_SKB_CB(beacon);

	/* Set up TX command fields */
	tx->len = cpu_to_le16((u16)beacon->len);
	tx->sta_id = mvmvif->deflink.bcast_sta.sta_id;
	tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
	tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
	tx_flags |=
		iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
						TX_CMD_FLG_BT_PRIO_POS;
	tx->tx_flags = cpu_to_le32(tx_flags);

	if (!fw_has_capa(&mvm->fw->ucode_capa,
			 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) {
		iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);

		tx->rate_n_flags =
			cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
				    RATE_MCS_ANT_POS);
	}

	rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);

	tx->rate_n_flags |=
		cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate));
	if (rate == IWL_FIRST_CCK_RATE)
		tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK_V1);

}

int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm,
				     struct sk_buff *beacon,
				     void *data, int len)
{
	struct iwl_host_cmd cmd = {
		.id = BEACON_TEMPLATE_CMD,
		.flags = CMD_ASYNC,
	};

	cmd.len[0] = len;
	cmd.data[0] = data;
	cmd.dataflags[0] = 0;
	cmd.len[1] = beacon->len;
	cmd.data[1] = beacon->data;
	cmd.dataflags[1] = IWL_HCMD_DFL_DUP;

	return iwl_mvm_send_cmd(mvm, &cmd);
}

static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm,
					   struct ieee80211_vif *vif,
					   struct sk_buff *beacon)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mac_beacon_cmd_v6 beacon_cmd = {};

	iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);

	beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);

	if (vif->type == NL80211_IFTYPE_AP)
		iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
					 &beacon_cmd.tim_size,
					 beacon->data, beacon->len);

	return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
						sizeof(beacon_cmd));
}

static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm,
					   struct ieee80211_vif *vif,
					   struct sk_buff *beacon)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mac_beacon_cmd_v7 beacon_cmd = {};

	iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);

	beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);

	if (vif->type == NL80211_IFTYPE_AP)
		iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
					 &beacon_cmd.tim_size,
					 beacon->data, beacon->len);

	beacon_cmd.csa_offset =
		cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
						   WLAN_EID_CHANNEL_SWITCH,
						   beacon->len));
	beacon_cmd.ecsa_offset =
		cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
						   WLAN_EID_EXT_CHANSWITCH_ANN,
						   beacon->len));

	return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
						sizeof(beacon_cmd));
}

bool iwl_mvm_enable_fils(struct iwl_mvm *mvm,
			 struct ieee80211_chanctx_conf *ctx)
{
	if (IWL_MVM_DISABLE_AP_FILS)
		return false;

	if (cfg80211_channel_is_psc(ctx->def.chan))
		return true;

	return (ctx->def.chan->band == NL80211_BAND_6GHZ &&
		ctx->def.width >= NL80211_CHAN_WIDTH_80);
}

static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm,
					   struct ieee80211_vif *vif,
					   struct sk_buff *beacon,
					   struct ieee80211_bss_conf *link_conf)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon);
	struct iwl_mac_beacon_cmd beacon_cmd = {};
	u8 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);
	u16 flags;
	struct ieee80211_chanctx_conf *ctx;
	int channel;
	flags = iwl_mvm_mac_ctxt_get_beacon_flags(mvm->fw, rate);

	/* Enable FILS on PSC channels only */
	rcu_read_lock();
	ctx = rcu_dereference(link_conf->chanctx_conf);
	channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq);
	WARN_ON(channel == 0);
	if (iwl_mvm_enable_fils(mvm, ctx)) {
		flags |= iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD,
					       0) > 10 ?
			IWL_MAC_BEACON_FILS :
			IWL_MAC_BEACON_FILS_V1;
		beacon_cmd.short_ssid =
			cpu_to_le32(~crc32_le(~0, vif->cfg.ssid,
					      vif->cfg.ssid_len));
	}
	rcu_read_unlock();

	beacon_cmd.flags = cpu_to_le16(flags);
	beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len);

	if (WARN_ON(!mvmvif->link[link_conf->link_id]))
		return -EINVAL;

	if (iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) > 12)
		beacon_cmd.link_id =
			cpu_to_le32(mvmvif->link[link_conf->link_id]->fw_link_id);
	else
		beacon_cmd.link_id = cpu_to_le32((u32)mvmvif->id);

	if (vif->type == NL80211_IFTYPE_AP)
		iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
					 &beacon_cmd.tim_size,
					 beacon->data, beacon->len);

	beacon_cmd.csa_offset =
		cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
						   WLAN_EID_CHANNEL_SWITCH,
						   beacon->len));
	beacon_cmd.ecsa_offset =
		cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
						   WLAN_EID_EXT_CHANSWITCH_ANN,
						   beacon->len));

	if (vif->type == NL80211_IFTYPE_AP &&
	    iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) >= 14)
		beacon_cmd.btwt_offset =
			cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
							   WLAN_EID_S1G_TWT,
							   beacon->len));

	return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
						sizeof(beacon_cmd));
}

static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
					struct ieee80211_vif *vif,
					struct sk_buff *beacon,
					struct ieee80211_bss_conf *link_conf)
{
	if (WARN_ON(!beacon))
		return -EINVAL;

	if (IWL_MVM_NON_TRANSMITTING_AP)
		return 0;

	if (!fw_has_capa(&mvm->fw->ucode_capa,
			 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD))
		return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon);

	if (fw_has_api(&mvm->fw->ucode_capa,
		       IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE))
		return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon,
						       link_conf);

	return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon);
}

/* The beacon template for the AP/GO/IBSS has changed and needs update */
int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
				    struct ieee80211_vif *vif,
				    struct ieee80211_bss_conf *link_conf)
{
	struct sk_buff *beacon;
	int ret;

	WARN_ON(vif->type != NL80211_IFTYPE_AP &&
		vif->type != NL80211_IFTYPE_ADHOC);

	beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL,
					       link_conf->link_id);
	if (!beacon)
		return -ENOMEM;

#ifdef CONFIG_IWLWIFI_DEBUGFS
	if (mvm->beacon_inject_active) {
		dev_kfree_skb(beacon);
		return -EBUSY;
	}
#endif

	ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon, link_conf);
	dev_kfree_skb(beacon);
	return ret;
}

struct iwl_mvm_mac_ap_iterator_data {
	struct iwl_mvm *mvm;
	struct ieee80211_vif *vif;
	u32 beacon_device_ts;
	u16 beacon_int;
};

/* Find the beacon_device_ts and beacon_int for a managed interface */
static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
				    struct ieee80211_vif *vif)
{
	struct iwl_mvm_mac_ap_iterator_data *data = _data;

	if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc)
		return;

	/* Station client has higher priority over P2P client*/
	if (vif->p2p && data->beacon_device_ts)
		return;

	data->beacon_device_ts = vif->bss_conf.sync_device_ts;
	data->beacon_int = vif->bss_conf.beacon_int;
}

/*
 * Fill the filter flags for mac context of type AP or P2P GO.
 */
void iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(struct iwl_mvm *mvm,
					      struct iwl_mvm_vif *mvmvif,
					      __le32 *filter_flags,
					      int accept_probe_req_flag,
					      int accept_beacon_flag)
{
	/*
	 * in AP mode, pass probe requests and beacons from other APs
	 * (needed for ht protection); when there're no any associated
	 * station don't ask FW to pass beacons to prevent unnecessary
	 * wake-ups.
	 */
	*filter_flags |= cpu_to_le32(accept_probe_req_flag);
	if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) {
		*filter_flags |= cpu_to_le32(accept_beacon_flag);
		IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
	} else {
		IWL_DEBUG_HC(mvm, "No need to receive beacons\n");
	}
}

/*
 * Fill the specific data for mac context of type AP of P2P GO
 */
static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
					 struct ieee80211_vif *vif,
					 struct iwl_mac_ctx_cmd *cmd,
					 struct iwl_mac_data_ap *ctxt_ap,
					 bool add)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mvm_mac_ap_iterator_data data = {
		.mvm = mvm,
		.vif = vif,
		.beacon_device_ts = 0
	};

	/* in AP mode, the MCAST FIFO takes the EDCA params from VO */
	cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);

	iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(mvm, mvmvif,
						 &cmd->filter_flags,
						 MAC_FILTER_IN_PROBE_REQUEST,
						 MAC_FILTER_IN_BEACON);

	ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
	ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
					     vif->bss_conf.dtim_period);

	if (!fw_has_api(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_API_STA_TYPE))
		ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->deflink.cab_queue);

	/*
	 * Only set the beacon time when the MAC is being added, when we
	 * just modify the MAC then we should keep the time -- the firmware
	 * can otherwise have a "jumping" TBTT.
	 */
	if (add) {
		/*
		 * If there is a station/P2P client interface which is
		 * associated, set the AP's TBTT far enough from the station's
		 * TBTT. Otherwise, set it to the current system time
		 */
		ieee80211_iterate_active_interfaces_atomic(
			mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
			iwl_mvm_mac_ap_iterator, &data);

		if (data.beacon_device_ts) {
			u32 rand = get_random_u32_inclusive(36, 63);
			mvmvif->ap_beacon_time = data.beacon_device_ts +
				ieee80211_tu_to_usec(data.beacon_int * rand /
						     100);
		} else {
			mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm);
		}
	}

	ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
	ctxt_ap->beacon_tsf = 0; /* unused */

	/* TODO: Assume that the beacon id == mac context id */
	ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
}

static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
				   struct ieee80211_vif *vif,
				   u32 action)
{
	struct iwl_mac_ctx_cmd cmd = {};

	WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);

	/* Fill the common data for all mac context types */
	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);

	/* Fill the data specific for ap mode */
	iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap,
				     action == FW_CTXT_ACTION_ADD);

	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
}

static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
				   struct ieee80211_vif *vif,
				   u32 action)
{
	struct iwl_mac_ctx_cmd cmd = {};
	struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;

	WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);

	/* Fill the common data for all mac context types */
	iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);

	/* Fill the data specific for GO mode */
	iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap,
				     action == FW_CTXT_ACTION_ADD);

	cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
					IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
	cmd.go.opp_ps_enabled =
			cpu_to_le32(!!(noa->oppps_ctwindow &
					IEEE80211_P2P_OPPPS_ENABLE_BIT));

	return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
}

static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
				u32 action, bool force_assoc_off,
				const u8 *bssid_override)
{
	switch (vif->type) {
	case NL80211_IFTYPE_STATION:
		return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
						force_assoc_off,
						bssid_override);
	case NL80211_IFTYPE_AP:
		if (!vif->p2p)
			return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
		else
			return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
	case NL80211_IFTYPE_MONITOR:
		return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
	case NL80211_IFTYPE_P2P_DEVICE:
		return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
	case NL80211_IFTYPE_ADHOC:
		return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
	default:
		break;
	}

	return -EOPNOTSUPP;
}

int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	int ret;

	if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
		      vif->addr, ieee80211_vif_type_p2p(vif)))
		return -EIO;

	ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
				   true, NULL);
	if (ret)
		return ret;

	/* will only do anything at resume from D3 time */
	iwl_mvm_set_last_nonqos_seq(mvm, vif);

	mvmvif->uploaded = true;
	return 0;
}

int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
			     bool force_assoc_off, const u8 *bssid_override)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

	if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
		      vif->addr, ieee80211_vif_type_p2p(vif)))
		return -EIO;

	return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
				    force_assoc_off, bssid_override);
}

int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mac_ctx_cmd cmd;
	int ret;

	if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
		      vif->addr, ieee80211_vif_type_p2p(vif)))
		return -EIO;

	memset(&cmd, 0, sizeof(cmd));

	cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
							   mvmvif->color));
	cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);

	ret = iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
	if (ret)
		return ret;

	mvmvif->uploaded = false;

	if (vif->type == NL80211_IFTYPE_MONITOR) {
		__clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
		iwl_mvm_dealloc_snif_sta(mvm);
	}

	return 0;
}

static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
				   struct ieee80211_vif *csa_vif, u32 gp2,
				   bool tx_success)
{
	struct iwl_mvm_vif *mvmvif =
			iwl_mvm_vif_from_mac80211(csa_vif);

	/* Don't start to countdown from a failed beacon */
	if (!tx_success && !mvmvif->csa_countdown)
		return;

	mvmvif->csa_countdown = true;

	if (!ieee80211_beacon_cntdwn_is_complete(csa_vif, 0)) {
		int c = ieee80211_beacon_update_cntdwn(csa_vif, 0);

		iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif,
						&csa_vif->bss_conf);
		if (csa_vif->p2p &&
		    !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&
		    tx_success) {
			u32 rel_time = (c + 1) *
				       csa_vif->bss_conf.beacon_int -
				       IWL_MVM_CHANNEL_SWITCH_TIME_GO;
			u32 apply_time = gp2 + rel_time * 1024;

			iwl_mvm_schedule_csa_period(mvm, csa_vif,
					 IWL_MVM_CHANNEL_SWITCH_TIME_GO -
					 IWL_MVM_CHANNEL_SWITCH_MARGIN,
					 apply_time);
		}
	} else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
		/* we don't have CSA NoA scheduled yet, switch now */
		ieee80211_csa_finish(csa_vif, 0);
		RCU_INIT_POINTER(mvm->csa_vif, NULL);
	}
}

void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
			     struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
	struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
	struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data;
	struct ieee80211_vif *csa_vif;
	struct ieee80211_vif *tx_blocked_vif;
	struct agg_tx_status *agg_status;
	u16 status;

	lockdep_assert_held(&mvm->mutex);

	mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);

	if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) {
		struct iwl_tx_resp *beacon_notify_hdr =
			&beacon_v5->beacon_notify_hdr;

		if (unlikely(pkt_len < sizeof(*beacon_v5)))
			return;

		mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0;
		agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr);
		status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK;
		IWL_DEBUG_RX(mvm,
			     "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n",
			     status, beacon_notify_hdr->failure_frame,
			     le64_to_cpu(beacon->tsf),
			     mvm->ap_last_beacon_gp2,
			     le32_to_cpu(beacon_notify_hdr->initial_rate));
	} else {
		if (unlikely(pkt_len < sizeof(*beacon)))
			return;

		mvm->ibss_manager = beacon->ibss_mgr_status != 0;
		status = le32_to_cpu(beacon->status) & TX_STATUS_MSK;
		IWL_DEBUG_RX(mvm,
			     "beacon status %#x tsf:0x%016llX gp2:0x%X\n",
			     status, le64_to_cpu(beacon->tsf),
			     mvm->ap_last_beacon_gp2);
	}

	csa_vif = rcu_dereference_protected(mvm->csa_vif,
					    lockdep_is_held(&mvm->mutex));
	if (unlikely(csa_vif && csa_vif->bss_conf.csa_active))
		iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,
				       (status == TX_STATUS_SUCCESS));

	tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
						lockdep_is_held(&mvm->mutex));
	if (unlikely(tx_blocked_vif)) {
		struct iwl_mvm_vif *mvmvif =
			iwl_mvm_vif_from_mac80211(tx_blocked_vif);

		/*
		 * The channel switch is started and we have blocked the
		 * stations. If this is the first beacon (the timeout wasn't
		 * set), set the unblock timeout, otherwise countdown
		 */
		if (!mvm->csa_tx_block_bcn_timeout)
			mvm->csa_tx_block_bcn_timeout =
				IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
		else
			mvm->csa_tx_block_bcn_timeout--;

		/* Check if the timeout is expired, and unblock tx */
		if (mvm->csa_tx_block_bcn_timeout == 0) {
			iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
			RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
		}
	}
}

static void
iwl_mvm_handle_missed_beacons_notif(struct iwl_mvm *mvm,
				    const struct iwl_missed_beacons_notif *mb,
				    struct iwl_rx_packet *pkt)
{
	struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig;
	struct iwl_fw_dbg_trigger_tlv *trigger;
	u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;
	u32 rx_missed_bcon, rx_missed_bcon_since_rx;
	struct ieee80211_vif *vif;
	/* Id can be mac/link id depending on the notification version */
	u32 id = le32_to_cpu(mb->link_id);
	union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };
	u32 mac_type;
	int link_id = -1;
	u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
					       MISSED_BEACONS_NOTIFICATION,
					       0);
	u8 new_notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
						   MISSED_BEACONS_NOTIF, 0);

	/* If the firmware uses the new notification (from MAC_CONF_GROUP),
	 * refer to that notification's version.
	 * Note that the new notification from MAC_CONF_GROUP starts from
	 * version 5.
	 */
	if (new_notif_ver)
		notif_ver = new_notif_ver;

	/* before version four the ID in the notification refers to mac ID */
	if (notif_ver < 4) {
		vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
	} else {
		struct ieee80211_bss_conf *bss_conf =
			iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, id, false);

		if (!bss_conf)
			return;

		vif = bss_conf->vif;
		link_id = bss_conf->link_id;
	}

	IWL_DEBUG_INFO(mvm,
		       "missed bcn %s_id=%u, consecutive=%u (%u)\n",
		       notif_ver < 4 ? "mac" : "link",
		       id,
		       le32_to_cpu(mb->consec_missed_beacons),
		       le32_to_cpu(mb->consec_missed_beacons_since_last_rx));

	if (!vif)
		return;

	mac_type = iwl_mvm_get_mac_type(vif);

	IWL_DEBUG_INFO(mvm, "missed beacon mac_type=%u,\n", mac_type);

	mvm->trans->dbg.dump_file_name_ext_valid = true;
	snprintf(mvm->trans->dbg.dump_file_name_ext, IWL_FW_INI_MAX_NAME,
		 "MacId_%d_MacType_%d", id, mac_type);

	rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons);
	rx_missed_bcon_since_rx =
		le32_to_cpu(mb->consec_missed_beacons_since_last_rx);
	/*
	 * TODO: the threshold should be adjusted based on latency conditions,
	 * and/or in case of a CS flow on one of the other AP vifs.
	 */
	if (rx_missed_bcon >= IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG) {
		if (rx_missed_bcon_since_rx >= IWL_MVM_MISSED_BEACONS_SINCE_RX_THOLD) {
			iwl_mvm_connection_loss(mvm, vif, "missed beacons");
		} else {
			IWL_WARN(mvm,
				 "missed beacons exceeds threshold, but receiving data. Stay connected, Expect bugs.\n");
			IWL_WARN(mvm,
				 "missed_beacons:%d, missed_beacons_since_rx:%d\n",
				 rx_missed_bcon, rx_missed_bcon_since_rx);
		}
	} else if (link_id >= 0 && hweight16(vif->active_links) > 1) {
		u32 scnd_lnk_bcn_lost = 0;

		if (notif_ver >= 5 &&
		    !IWL_FW_CHECK(mvm,
				  le32_to_cpu(mb->other_link_id) == IWL_MVM_FW_LINK_ID_INVALID,
				  "No data for other link id but we are in EMLSR active_links: 0x%x\n",
				  vif->active_links))
			scnd_lnk_bcn_lost =
				le32_to_cpu(mb->consec_missed_beacons_other_link);

		/* Exit EMLSR if we lost more than
		 * IWL_MVM_MISSED_BEACONS_EXIT_ESR_THRESH beacons on boths links
		 * OR more than IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH on any link.
		 */
		if ((rx_missed_bcon >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH_2_LINKS &&
		     scnd_lnk_bcn_lost >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH_2_LINKS) ||
		    rx_missed_bcon >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH)
			iwl_mvm_exit_esr(mvm, vif,
					 IWL_MVM_ESR_EXIT_MISSED_BEACON,
					 iwl_mvm_get_primary_link(vif));
	} else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD) {
		if (!iwl_mvm_has_new_tx_api(mvm))
			ieee80211_beacon_loss(vif);
		else
			ieee80211_cqm_beacon_loss_notify(vif, GFP_ATOMIC);
	}

	iwl_dbg_tlv_time_point(&mvm->fwrt,
			       IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data);

	trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
					FW_DBG_TRIGGER_MISSED_BEACONS);
	if (!trigger)
		return;

	bcon_trig = (void *)trigger->data;
	stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);
	stop_trig_missed_bcon_since_rx =
		le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);

	/* TODO: implement start trigger */

	if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
	    rx_missed_bcon >= stop_trig_missed_bcon)
		iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL);
}

void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
				     struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);

	iwl_mvm_handle_missed_beacons_notif(mvm, (const void *)pkt->data, pkt);
}

void iwl_mvm_rx_missed_beacons_notif_legacy(struct iwl_mvm *mvm,
					    struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	const struct iwl_missed_beacons_notif_v4 *mb_v4 =
		(const void *)pkt->data;
	struct iwl_missed_beacons_notif mb = {
		.link_id = mb_v4->link_id,
		.consec_missed_beacons = mb_v4->consec_missed_beacons,
		.consec_missed_beacons_since_last_rx =
			mb_v4->consec_missed_beacons_since_last_rx,
		.other_link_id = cpu_to_le32(IWL_MVM_FW_LINK_ID_INVALID),
	};

	iwl_mvm_handle_missed_beacons_notif(mvm, &mb, pkt);
}

void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm,
				    struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
	struct iwl_stored_beacon_notif_common *sb = (void *)pkt->data;
	struct ieee80211_rx_status rx_status;
	struct sk_buff *skb;
	u8 *data;
	u32 size = le32_to_cpu(sb->byte_count);
	int ver = iwl_fw_lookup_cmd_ver(mvm->fw,
					WIDE_ID(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF),
					0);

	if (size == 0)
		return;

	/* handle per-version differences */
	if (ver <= 2) {
		struct iwl_stored_beacon_notif_v2 *sb_v2 = (void *)pkt->data;

		if (pkt_len < struct_size(sb_v2, data, size))
			return;

		data = sb_v2->data;
	} else {
		struct iwl_stored_beacon_notif_v3 *sb_v3 = (void *)pkt->data;

		if (pkt_len < struct_size(sb_v3, data, size))
			return;

		data = sb_v3->data;
	}

	skb = alloc_skb(size, GFP_ATOMIC);
	if (!skb) {
		IWL_ERR(mvm, "alloc_skb failed\n");
		return;
	}

	/* update rx_status according to the notification's metadata */
	memset(&rx_status, 0, sizeof(rx_status));
	rx_status.mactime = le64_to_cpu(sb->tsf);
	/* TSF as indicated by the firmware  is at INA time */
	rx_status.flag |= RX_FLAG_MACTIME_PLCP_START;
	rx_status.device_timestamp = le32_to_cpu(sb->system_time);
	rx_status.band =
		(sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
				NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
	rx_status.freq =
		ieee80211_channel_to_frequency(le16_to_cpu(sb->channel),
					       rx_status.band);

	/* copy the data */
	skb_put_data(skb, data, size);
	memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));

	/* pass it as regular rx to mac80211 */
	ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);
}

void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm,
				   struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_probe_resp_data_notif *notif = (void *)pkt->data;
	struct iwl_probe_resp_data *old_data, *new_data;
	u32 id = le32_to_cpu(notif->mac_id);
	struct ieee80211_vif *vif;
	struct iwl_mvm_vif *mvmvif;

	IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n",
		       notif->noa_active, notif->csa_counter);

	vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
	if (!vif)
		return;

	mvmvif = iwl_mvm_vif_from_mac80211(vif);

	new_data = kzalloc(sizeof(*new_data), GFP_KERNEL);
	if (!new_data)
		return;

	memcpy(&new_data->notif, notif, sizeof(new_data->notif));

	/* noa_attr contains 1 reserved byte, need to substruct it */
	new_data->noa_len = sizeof(struct ieee80211_vendor_ie) +
			    sizeof(new_data->notif.noa_attr) - 1;

	/*
	 * If it's a one time NoA, only one descriptor is needed,
	 * adjust the length according to len_low.
	 */
	if (new_data->notif.noa_attr.len_low ==
	    sizeof(struct ieee80211_p2p_noa_desc) + 2)
		new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc);

	old_data = rcu_dereference_protected(mvmvif->deflink.probe_resp_data,
					     lockdep_is_held(&mvmvif->mvm->mutex));
	rcu_assign_pointer(mvmvif->deflink.probe_resp_data, new_data);

	if (old_data)
		kfree_rcu(old_data, rcu_head);

	if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA &&
	    notif->csa_counter >= 1)
		ieee80211_beacon_set_cntdwn(vif, notif->csa_counter);
}

void iwl_mvm_channel_switch_start_notif(struct iwl_mvm *mvm,
					struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct ieee80211_vif *csa_vif, *vif;
	struct iwl_mvm_vif *mvmvif, *csa_mvmvif;
	u32 id_n_color, csa_id;
	/* save mac_id or link_id to use later to cancel csa if needed */
	u32 id;
	u32 mac_link_id = 0;
	u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
					       CHANNEL_SWITCH_START_NOTIF, 0);
	bool csa_active;

	rcu_read_lock();

	if (notif_ver < 3) {
		struct iwl_channel_switch_start_notif_v1 *notif = (void *)pkt->data;
		u32 mac_id;

		id_n_color = le32_to_cpu(notif->id_and_color);
		mac_id = id_n_color & FW_CTXT_ID_MSK;

		vif = iwl_mvm_rcu_dereference_vif_id(mvm, mac_id, true);
		if (!vif)
			goto out_unlock;

		id = mac_id;
		csa_active = vif->bss_conf.csa_active;
	} else {
		struct iwl_channel_switch_start_notif *notif = (void *)pkt->data;
		u32 link_id = le32_to_cpu(notif->link_id);
		struct ieee80211_bss_conf *bss_conf =
			iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, link_id, true);

		if (!bss_conf)
			goto out_unlock;

		id = link_id;
		mac_link_id = bss_conf->link_id;
		vif = bss_conf->vif;
		csa_active = bss_conf->csa_active;
	}

	mvmvif = iwl_mvm_vif_from_mac80211(vif);
	if (notif_ver >= 3)
		id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);

	switch (vif->type) {
	case NL80211_IFTYPE_AP:
		csa_vif = rcu_dereference(mvm->csa_vif);
		if (WARN_ON(!csa_vif || !csa_vif->bss_conf.csa_active ||
			    csa_vif != vif))
			goto out_unlock;

		csa_mvmvif = iwl_mvm_vif_from_mac80211(csa_vif);
		csa_id = FW_CMD_ID_AND_COLOR(csa_mvmvif->id, csa_mvmvif->color);
		if (WARN(csa_id != id_n_color,
			 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
			 csa_id, id_n_color))
			goto out_unlock;

		IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n");

		schedule_delayed_work(&mvm->cs_tx_unblock_dwork,
				      msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT *
						       csa_vif->bss_conf.beacon_int));

		ieee80211_csa_finish(csa_vif, 0);

		rcu_read_unlock();

		RCU_INIT_POINTER(mvm->csa_vif, NULL);
		return;
	case NL80211_IFTYPE_STATION:
		/*
		 * if we don't know about an ongoing channel switch,
		 * make sure FW cancels it
		 */
		if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
					    CHANNEL_SWITCH_ERROR_NOTIF,
					    0) && !csa_active) {
			IWL_DEBUG_INFO(mvm, "Channel Switch was canceled\n");
			iwl_mvm_cancel_channel_switch(mvm, vif, id);
			break;
		}

		iwl_mvm_csa_client_absent(mvm, vif);
		cancel_delayed_work(&mvmvif->csa_work);
		ieee80211_chswitch_done(vif, true, mac_link_id);
		break;
	default:
		/* should never happen */
		WARN_ON_ONCE(1);
		break;
	}
out_unlock:
	rcu_read_unlock();
}

void iwl_mvm_channel_switch_error_notif(struct iwl_mvm *mvm,
					struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_channel_switch_error_notif *notif = (void *)pkt->data;
	struct ieee80211_vif *vif;
	u32 id = le32_to_cpu(notif->link_id);
	u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask);

	rcu_read_lock();
	vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
	if (!vif) {
		rcu_read_unlock();
		return;
	}

	IWL_DEBUG_INFO(mvm, "FW reports CSA error: id=%u, csa_err_mask=%u\n",
		       id, csa_err_mask);
	if (csa_err_mask & (CS_ERR_COUNT_ERROR |
			    CS_ERR_LONG_DELAY_AFTER_CS |
			    CS_ERR_TX_BLOCK_TIMER_EXPIRED))
		ieee80211_channel_switch_disconnect(vif, true);
	rcu_read_unlock();
}

void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm,
				 struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_missed_vap_notif *mb = (void *)pkt->data;
	struct ieee80211_vif *vif;
	u32 id = le32_to_cpu(mb->mac_id);

	IWL_DEBUG_INFO(mvm,
		       "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n",
		       le32_to_cpu(mb->mac_id),
		       mb->num_beacon_intervals_elapsed,
		       mb->profile_periodicity);

	rcu_read_lock();

	vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
	if (vif)
		iwl_mvm_connection_loss(mvm, vif, "missed vap beacon");

	rcu_read_unlock();
}