summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
blob: b53148f972a4a4e5c6e04d34ed7c052144235282 (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
/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
 * Copyright(c) 2018 Intel Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * The full GNU General Public License is included in this distribution
 * in the file called COPYING.
 *
 * Contact Information:
 *  Intel Linux Wireless <ilw@linux.intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
 * Copyright(c) 2018 Intel Corporation
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include "iwl-trans.h"
#include "mvm.h"
#include "fw-api.h"

static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb,
				   int queue, struct ieee80211_sta *sta)
{
	struct iwl_mvm_sta *mvmsta;
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb);
	struct iwl_mvm_key_pn *ptk_pn;
	int res;
	u8 tid, keyidx;
	u8 pn[IEEE80211_CCMP_PN_LEN];
	u8 *extiv;

	/* do PN checking */

	/* multicast and non-data only arrives on default queue */
	if (!ieee80211_is_data(hdr->frame_control) ||
	    is_multicast_ether_addr(hdr->addr1))
		return 0;

	/* do not check PN for open AP */
	if (!(stats->flag & RX_FLAG_DECRYPTED))
		return 0;

	/*
	 * avoid checking for default queue - we don't want to replicate
	 * all the logic that's necessary for checking the PN on fragmented
	 * frames, leave that to mac80211
	 */
	if (queue == 0)
		return 0;

	/* if we are here - this for sure is either CCMP or GCMP */
	if (IS_ERR_OR_NULL(sta)) {
		IWL_ERR(mvm,
			"expected hw-decrypted unicast frame for station\n");
		return -1;
	}

	mvmsta = iwl_mvm_sta_from_mac80211(sta);

	extiv = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control);
	keyidx = extiv[3] >> 6;

	ptk_pn = rcu_dereference(mvmsta->ptk_pn[keyidx]);
	if (!ptk_pn)
		return -1;

	if (ieee80211_is_data_qos(hdr->frame_control))
		tid = ieee80211_get_tid(hdr);
	else
		tid = 0;

	/* we don't use HCCA/802.11 QoS TSPECs, so drop such frames */
	if (tid >= IWL_MAX_TID_COUNT)
		return -1;

	/* load pn */
	pn[0] = extiv[7];
	pn[1] = extiv[6];
	pn[2] = extiv[5];
	pn[3] = extiv[4];
	pn[4] = extiv[1];
	pn[5] = extiv[0];

	res = memcmp(pn, ptk_pn->q[queue].pn[tid], IEEE80211_CCMP_PN_LEN);
	if (res < 0)
		return -1;
	if (!res && !(stats->flag & RX_FLAG_ALLOW_SAME_PN))
		return -1;

	memcpy(ptk_pn->q[queue].pn[tid], pn, IEEE80211_CCMP_PN_LEN);
	stats->flag |= RX_FLAG_PN_VALIDATED;

	return 0;
}

/* iwl_mvm_create_skb Adds the rxb to a new skb */
static void iwl_mvm_create_skb(struct sk_buff *skb, struct ieee80211_hdr *hdr,
			       u16 len, u8 crypt_len,
			       struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
	unsigned int headlen, fraglen, pad_len = 0;
	unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);

	if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
		len -= 2;
		pad_len = 2;
	}

	/* If frame is small enough to fit in skb->head, pull it completely.
	 * If not, only pull ieee80211_hdr (including crypto if present, and
	 * an additional 8 bytes for SNAP/ethertype, see below) so that
	 * splice() or TCP coalesce are more efficient.
	 *
	 * Since, in addition, ieee80211_data_to_8023() always pull in at
	 * least 8 bytes (possibly more for mesh) we can do the same here
	 * to save the cost of doing it later. That still doesn't pull in
	 * the actual IP header since the typical case has a SNAP header.
	 * If the latter changes (there are efforts in the standards group
	 * to do so) we should revisit this and ieee80211_data_to_8023().
	 */
	headlen = (len <= skb_tailroom(skb)) ? len :
					       hdrlen + crypt_len + 8;

	/* The firmware may align the packet to DWORD.
	 * The padding is inserted after the IV.
	 * After copying the header + IV skip the padding if
	 * present before copying packet data.
	 */
	hdrlen += crypt_len;
	skb_put_data(skb, hdr, hdrlen);
	skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen);

	fraglen = len - headlen;

	if (fraglen) {
		int offset = (void *)hdr + headlen + pad_len -
			     rxb_addr(rxb) + rxb_offset(rxb);

		skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
				fraglen, rxb->truesize);
	}
}

/* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */
static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
					    struct napi_struct *napi,
					    struct sk_buff *skb, int queue,
					    struct ieee80211_sta *sta)
{
	struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);

	if (iwl_mvm_check_pn(mvm, skb, queue, sta)) {
		kfree_skb(skb);
	} else {
		unsigned int radiotap_len = 0;

		if (rx_status->flag & RX_FLAG_RADIOTAP_HE)
			radiotap_len += sizeof(struct ieee80211_radiotap_he);
		if (rx_status->flag & RX_FLAG_RADIOTAP_HE_MU)
			radiotap_len += sizeof(struct ieee80211_radiotap_he_mu);
		__skb_push(skb, radiotap_len);
		ieee80211_rx_napi(mvm->hw, sta, skb, napi);
	}
}

static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
					struct ieee80211_rx_status *rx_status,
					u32 rate_n_flags, int energy_a,
					int energy_b)
{
	int max_energy;
	u32 rate_flags = rate_n_flags;

	energy_a = energy_a ? -energy_a : S8_MIN;
	energy_b = energy_b ? -energy_b : S8_MIN;
	max_energy = max(energy_a, energy_b);

	IWL_DEBUG_STATS(mvm, "energy In A %d B %d, and max %d\n",
			energy_a, energy_b, max_energy);

	rx_status->signal = max_energy;
	rx_status->chains =
		(rate_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS;
	rx_status->chain_signal[0] = energy_a;
	rx_status->chain_signal[1] = energy_b;
	rx_status->chain_signal[2] = S8_MIN;
}

static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
			     struct ieee80211_rx_status *stats, u16 phy_info,
			     struct iwl_rx_mpdu_desc *desc,
			     u32 pkt_flags, int queue, u8 *crypt_len)
{
	u16 status = le16_to_cpu(desc->status);

	/*
	 * Drop UNKNOWN frames in aggregation, unless in monitor mode
	 * (where we don't have the keys).
	 * We limit this to aggregation because in TKIP this is a valid
	 * scenario, since we may not have the (correct) TTAK (phase 1
	 * key) in the firmware.
	 */
	if (phy_info & IWL_RX_MPDU_PHY_AMPDU &&
	    (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
	    IWL_RX_MPDU_STATUS_SEC_UNKNOWN && !mvm->monitor_on)
		return -1;

	if (!ieee80211_has_protected(hdr->frame_control) ||
	    (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
	    IWL_RX_MPDU_STATUS_SEC_NONE)
		return 0;

	/* TODO: handle packets encrypted with unknown alg */

	switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) {
	case IWL_RX_MPDU_STATUS_SEC_CCM:
	case IWL_RX_MPDU_STATUS_SEC_GCM:
		BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN);
		/* alg is CCM: check MIC only */
		if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
			return -1;

		stats->flag |= RX_FLAG_DECRYPTED;
		if (pkt_flags & FH_RSCSR_RADA_EN)
			stats->flag |= RX_FLAG_MIC_STRIPPED;
		*crypt_len = IEEE80211_CCMP_HDR_LEN;
		return 0;
	case IWL_RX_MPDU_STATUS_SEC_TKIP:
		/* Don't drop the frame and decrypt it in SW */
		if (!fw_has_api(&mvm->fw->ucode_capa,
				IWL_UCODE_TLV_API_DEPRECATE_TTAK) &&
		    !(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK))
			return 0;

		*crypt_len = IEEE80211_TKIP_IV_LEN;
		/* fall through if TTAK OK */
	case IWL_RX_MPDU_STATUS_SEC_WEP:
		if (!(status & IWL_RX_MPDU_STATUS_ICV_OK))
			return -1;

		stats->flag |= RX_FLAG_DECRYPTED;
		if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
				IWL_RX_MPDU_STATUS_SEC_WEP)
			*crypt_len = IEEE80211_WEP_IV_LEN;

		if (pkt_flags & FH_RSCSR_RADA_EN)
			stats->flag |= RX_FLAG_ICV_STRIPPED;

		return 0;
	case IWL_RX_MPDU_STATUS_SEC_EXT_ENC:
		if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
			return -1;
		stats->flag |= RX_FLAG_DECRYPTED;
		return 0;
	default:
		/* Expected in monitor (not having the keys) */
		if (!mvm->monitor_on)
			IWL_ERR(mvm, "Unhandled alg: 0x%x\n", status);
	}

	return 0;
}

static void iwl_mvm_rx_csum(struct ieee80211_sta *sta,
			    struct sk_buff *skb,
			    struct iwl_rx_mpdu_desc *desc)
{
	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
	u16 flags = le16_to_cpu(desc->l3l4_flags);
	u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >>
			  IWL_RX_L3_PROTO_POS);

	if (mvmvif->features & NETIF_F_RXCSUM &&
	    flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK &&
	    (flags & IWL_RX_L3L4_IP_HDR_CSUM_OK ||
	     l3_prot == IWL_RX_L3_TYPE_IPV6 ||
	     l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG))
		skb->ip_summed = CHECKSUM_UNNECESSARY;
}

/*
 * returns true if a packet is a duplicate and should be dropped.
 * Updates AMSDU PN tracking info
 */
static bool iwl_mvm_is_dup(struct ieee80211_sta *sta, int queue,
			   struct ieee80211_rx_status *rx_status,
			   struct ieee80211_hdr *hdr,
			   struct iwl_rx_mpdu_desc *desc)
{
	struct iwl_mvm_sta *mvm_sta;
	struct iwl_mvm_rxq_dup_data *dup_data;
	u8 tid, sub_frame_idx;

	if (WARN_ON(IS_ERR_OR_NULL(sta)))
		return false;

	mvm_sta = iwl_mvm_sta_from_mac80211(sta);
	dup_data = &mvm_sta->dup_data[queue];

	/*
	 * Drop duplicate 802.11 retransmissions
	 * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")
	 */
	if (ieee80211_is_ctl(hdr->frame_control) ||
	    ieee80211_is_qos_nullfunc(hdr->frame_control) ||
	    is_multicast_ether_addr(hdr->addr1)) {
		rx_status->flag |= RX_FLAG_DUP_VALIDATED;
		return false;
	}

	if (ieee80211_is_data_qos(hdr->frame_control))
		/* frame has qos control */
		tid = ieee80211_get_tid(hdr);
	else
		tid = IWL_MAX_TID_COUNT;

	/* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */
	sub_frame_idx = desc->amsdu_info &
		IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;

	if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
		     dup_data->last_seq[tid] == hdr->seq_ctrl &&
		     dup_data->last_sub_frame[tid] >= sub_frame_idx))
		return true;

	/* Allow same PN as the first subframe for following sub frames */
	if (dup_data->last_seq[tid] == hdr->seq_ctrl &&
	    sub_frame_idx > dup_data->last_sub_frame[tid] &&
	    desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU)
		rx_status->flag |= RX_FLAG_ALLOW_SAME_PN;

	dup_data->last_seq[tid] = hdr->seq_ctrl;
	dup_data->last_sub_frame[tid] = sub_frame_idx;

	rx_status->flag |= RX_FLAG_DUP_VALIDATED;

	return false;
}

int iwl_mvm_notify_rx_queue(struct iwl_mvm *mvm, u32 rxq_mask,
			    const u8 *data, u32 count)
{
	struct iwl_rxq_sync_cmd *cmd;
	u32 data_size = sizeof(*cmd) + count;
	int ret;

	/* should be DWORD aligned */
	if (WARN_ON(count & 3 || count > IWL_MULTI_QUEUE_SYNC_MSG_MAX_SIZE))
		return -EINVAL;

	cmd = kzalloc(data_size, GFP_KERNEL);
	if (!cmd)
		return -ENOMEM;

	cmd->rxq_mask = cpu_to_le32(rxq_mask);
	cmd->count =  cpu_to_le32(count);
	cmd->flags = 0;
	memcpy(cmd->payload, data, count);

	ret = iwl_mvm_send_cmd_pdu(mvm,
				   WIDE_ID(DATA_PATH_GROUP,
					   TRIGGER_RX_QUEUES_NOTIF_CMD),
				   0, data_size, cmd);

	kfree(cmd);
	return ret;
}

/*
 * Returns true if sn2 - buffer_size < sn1 < sn2.
 * To be used only in order to compare reorder buffer head with NSSN.
 * We fully trust NSSN unless it is behind us due to reorder timeout.
 * Reorder timeout can only bring us up to buffer_size SNs ahead of NSSN.
 */
static bool iwl_mvm_is_sn_less(u16 sn1, u16 sn2, u16 buffer_size)
{
	return ieee80211_sn_less(sn1, sn2) &&
	       !ieee80211_sn_less(sn1, sn2 - buffer_size);
}

#define RX_REORDER_BUF_TIMEOUT_MQ (HZ / 10)

static void iwl_mvm_release_frames(struct iwl_mvm *mvm,
				   struct ieee80211_sta *sta,
				   struct napi_struct *napi,
				   struct iwl_mvm_baid_data *baid_data,
				   struct iwl_mvm_reorder_buffer *reorder_buf,
				   u16 nssn)
{
	struct iwl_mvm_reorder_buf_entry *entries =
		&baid_data->entries[reorder_buf->queue *
				    baid_data->entries_per_queue];
	u16 ssn = reorder_buf->head_sn;

	lockdep_assert_held(&reorder_buf->lock);

	/* ignore nssn smaller than head sn - this can happen due to timeout */
	if (iwl_mvm_is_sn_less(nssn, ssn, reorder_buf->buf_size))
		goto set_timer;

	while (iwl_mvm_is_sn_less(ssn, nssn, reorder_buf->buf_size)) {
		int index = ssn % reorder_buf->buf_size;
		struct sk_buff_head *skb_list = &entries[index].e.frames;
		struct sk_buff *skb;

		ssn = ieee80211_sn_inc(ssn);

		/*
		 * Empty the list. Will have more than one frame for A-MSDU.
		 * Empty list is valid as well since nssn indicates frames were
		 * received.
		 */
		while ((skb = __skb_dequeue(skb_list))) {
			iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb,
							reorder_buf->queue,
							sta);
			reorder_buf->num_stored--;
		}
	}
	reorder_buf->head_sn = nssn;

set_timer:
	if (reorder_buf->num_stored && !reorder_buf->removed) {
		u16 index = reorder_buf->head_sn % reorder_buf->buf_size;

		while (skb_queue_empty(&entries[index].e.frames))
			index = (index + 1) % reorder_buf->buf_size;
		/* modify timer to match next frame's expiration time */
		mod_timer(&reorder_buf->reorder_timer,
			  entries[index].e.reorder_time + 1 +
			  RX_REORDER_BUF_TIMEOUT_MQ);
	} else {
		del_timer(&reorder_buf->reorder_timer);
	}
}

void iwl_mvm_reorder_timer_expired(struct timer_list *t)
{
	struct iwl_mvm_reorder_buffer *buf = from_timer(buf, t, reorder_timer);
	struct iwl_mvm_baid_data *baid_data =
		iwl_mvm_baid_data_from_reorder_buf(buf);
	struct iwl_mvm_reorder_buf_entry *entries =
		&baid_data->entries[buf->queue * baid_data->entries_per_queue];
	int i;
	u16 sn = 0, index = 0;
	bool expired = false;
	bool cont = false;

	spin_lock(&buf->lock);

	if (!buf->num_stored || buf->removed) {
		spin_unlock(&buf->lock);
		return;
	}

	for (i = 0; i < buf->buf_size ; i++) {
		index = (buf->head_sn + i) % buf->buf_size;

		if (skb_queue_empty(&entries[index].e.frames)) {
			/*
			 * If there is a hole and the next frame didn't expire
			 * we want to break and not advance SN
			 */
			cont = false;
			continue;
		}
		if (!cont &&
		    !time_after(jiffies, entries[index].e.reorder_time +
					 RX_REORDER_BUF_TIMEOUT_MQ))
			break;

		expired = true;
		/* continue until next hole after this expired frames */
		cont = true;
		sn = ieee80211_sn_add(buf->head_sn, i + 1);
	}

	if (expired) {
		struct ieee80211_sta *sta;
		struct iwl_mvm_sta *mvmsta;
		u8 sta_id = baid_data->sta_id;

		rcu_read_lock();
		sta = rcu_dereference(buf->mvm->fw_id_to_mac_id[sta_id]);
		mvmsta = iwl_mvm_sta_from_mac80211(sta);

		/* SN is set to the last expired frame + 1 */
		IWL_DEBUG_HT(buf->mvm,
			     "Releasing expired frames for sta %u, sn %d\n",
			     sta_id, sn);
		iwl_mvm_event_frame_timeout_callback(buf->mvm, mvmsta->vif,
						     sta, baid_data->tid);
		iwl_mvm_release_frames(buf->mvm, sta, NULL, baid_data, buf, sn);
		rcu_read_unlock();
	} else {
		/*
		 * If no frame expired and there are stored frames, index is now
		 * pointing to the first unexpired frame - modify timer
		 * accordingly to this frame.
		 */
		mod_timer(&buf->reorder_timer,
			  entries[index].e.reorder_time +
			  1 + RX_REORDER_BUF_TIMEOUT_MQ);
	}
	spin_unlock(&buf->lock);
}

static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue,
			   struct iwl_mvm_delba_data *data)
{
	struct iwl_mvm_baid_data *ba_data;
	struct ieee80211_sta *sta;
	struct iwl_mvm_reorder_buffer *reorder_buf;
	u8 baid = data->baid;

	if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid))
		return;

	rcu_read_lock();

	ba_data = rcu_dereference(mvm->baid_map[baid]);
	if (WARN_ON_ONCE(!ba_data))
		goto out;

	sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]);
	if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
		goto out;

	reorder_buf = &ba_data->reorder_buf[queue];

	/* release all frames that are in the reorder buffer to the stack */
	spin_lock_bh(&reorder_buf->lock);
	iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf,
			       ieee80211_sn_add(reorder_buf->head_sn,
						reorder_buf->buf_size));
	spin_unlock_bh(&reorder_buf->lock);
	del_timer_sync(&reorder_buf->reorder_timer);

out:
	rcu_read_unlock();
}

void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
			    int queue)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_rxq_sync_notification *notif;
	struct iwl_mvm_internal_rxq_notif *internal_notif;

	notif = (void *)pkt->data;
	internal_notif = (void *)notif->payload;

	if (internal_notif->sync &&
	    mvm->queue_sync_cookie != internal_notif->cookie) {
		WARN_ONCE(1, "Received expired RX queue sync message\n");
		return;
	}

	switch (internal_notif->type) {
	case IWL_MVM_RXQ_EMPTY:
		break;
	case IWL_MVM_RXQ_NOTIF_DEL_BA:
		iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data);
		break;
	default:
		WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
	}

	if (internal_notif->sync &&
	    !atomic_dec_return(&mvm->queue_sync_counter))
		wake_up(&mvm->rx_sync_waitq);
}

/*
 * Returns true if the MPDU was buffered\dropped, false if it should be passed
 * to upper layer.
 */
static bool iwl_mvm_reorder(struct iwl_mvm *mvm,
			    struct napi_struct *napi,
			    int queue,
			    struct ieee80211_sta *sta,
			    struct sk_buff *skb,
			    struct iwl_rx_mpdu_desc *desc)
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct iwl_mvm_sta *mvm_sta;
	struct iwl_mvm_baid_data *baid_data;
	struct iwl_mvm_reorder_buffer *buffer;
	struct sk_buff *tail;
	u32 reorder = le32_to_cpu(desc->reorder_data);
	bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU;
	bool last_subframe =
		desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME;
	u8 tid = ieee80211_get_tid(hdr);
	u8 sub_frame_idx = desc->amsdu_info &
			   IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
	struct iwl_mvm_reorder_buf_entry *entries;
	int index;
	u16 nssn, sn;
	u8 baid;

	baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
		IWL_RX_MPDU_REORDER_BAID_SHIFT;

	/*
	 * This also covers the case of receiving a Block Ack Request
	 * outside a BA session; we'll pass it to mac80211 and that
	 * then sends a delBA action frame.
	 */
	if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
		return false;

	/* no sta yet */
	if (WARN_ONCE(IS_ERR_OR_NULL(sta),
		      "Got valid BAID without a valid station assigned\n"))
		return false;

	mvm_sta = iwl_mvm_sta_from_mac80211(sta);

	/* not a data packet or a bar */
	if (!ieee80211_is_back_req(hdr->frame_control) &&
	    (!ieee80211_is_data_qos(hdr->frame_control) ||
	     is_multicast_ether_addr(hdr->addr1)))
		return false;

	if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
		return false;

	baid_data = rcu_dereference(mvm->baid_map[baid]);
	if (!baid_data) {
		IWL_DEBUG_RX(mvm,
			     "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
			      baid, reorder);
		return false;
	}

	if (WARN(tid != baid_data->tid || mvm_sta->sta_id != baid_data->sta_id,
		 "baid 0x%x is mapped to sta:%d tid:%d, but was received for sta:%d tid:%d\n",
		 baid, baid_data->sta_id, baid_data->tid, mvm_sta->sta_id,
		 tid))
		return false;

	nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK;
	sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >>
		IWL_RX_MPDU_REORDER_SN_SHIFT;

	buffer = &baid_data->reorder_buf[queue];
	entries = &baid_data->entries[queue * baid_data->entries_per_queue];

	spin_lock_bh(&buffer->lock);

	if (!buffer->valid) {
		if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) {
			spin_unlock_bh(&buffer->lock);
			return false;
		}
		buffer->valid = true;
	}

	if (ieee80211_is_back_req(hdr->frame_control)) {
		iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer, nssn);
		goto drop;
	}

	/*
	 * If there was a significant jump in the nssn - adjust.
	 * If the SN is smaller than the NSSN it might need to first go into
	 * the reorder buffer, in which case we just release up to it and the
	 * rest of the function will take care of storing it and releasing up to
	 * the nssn
	 */
	if (!iwl_mvm_is_sn_less(nssn, buffer->head_sn + buffer->buf_size,
				buffer->buf_size) ||
	    !ieee80211_sn_less(sn, buffer->head_sn + buffer->buf_size)) {
		u16 min_sn = ieee80211_sn_less(sn, nssn) ? sn : nssn;

		iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer,
				       min_sn);
	}

	/* drop any oudated packets */
	if (ieee80211_sn_less(sn, buffer->head_sn))
		goto drop;

	/* release immediately if allowed by nssn and no stored frames */
	if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
		if (iwl_mvm_is_sn_less(buffer->head_sn, nssn,
				       buffer->buf_size) &&
		   (!amsdu || last_subframe))
			buffer->head_sn = nssn;
		/* No need to update AMSDU last SN - we are moving the head */
		spin_unlock_bh(&buffer->lock);
		return false;
	}

	/*
	 * release immediately if there are no stored frames, and the sn is
	 * equal to the head.
	 * This can happen due to reorder timer, where NSSN is behind head_sn.
	 * When we released everything, and we got the next frame in the
	 * sequence, according to the NSSN we can't release immediately,
	 * while technically there is no hole and we can move forward.
	 */
	if (!buffer->num_stored && sn == buffer->head_sn) {
		if (!amsdu || last_subframe)
			buffer->head_sn = ieee80211_sn_inc(buffer->head_sn);
		/* No need to update AMSDU last SN - we are moving the head */
		spin_unlock_bh(&buffer->lock);
		return false;
	}

	index = sn % buffer->buf_size;

	/*
	 * Check if we already stored this frame
	 * As AMSDU is either received or not as whole, logic is simple:
	 * If we have frames in that position in the buffer and the last frame
	 * originated from AMSDU had a different SN then it is a retransmission.
	 * If it is the same SN then if the subframe index is incrementing it
	 * is the same AMSDU - otherwise it is a retransmission.
	 */
	tail = skb_peek_tail(&entries[index].e.frames);
	if (tail && !amsdu)
		goto drop;
	else if (tail && (sn != buffer->last_amsdu ||
			  buffer->last_sub_index >= sub_frame_idx))
		goto drop;

	/* put in reorder buffer */
	__skb_queue_tail(&entries[index].e.frames, skb);
	buffer->num_stored++;
	entries[index].e.reorder_time = jiffies;

	if (amsdu) {
		buffer->last_amsdu = sn;
		buffer->last_sub_index = sub_frame_idx;
	}

	/*
	 * We cannot trust NSSN for AMSDU sub-frames that are not the last.
	 * The reason is that NSSN advances on the first sub-frame, and may
	 * cause the reorder buffer to advance before all the sub-frames arrive.
	 * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
	 * SN 1. NSSN for first sub frame will be 3 with the result of driver
	 * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
	 * already ahead and it will be dropped.
	 * If the last sub-frame is not on this queue - we will get frame
	 * release notification with up to date NSSN.
	 */
	if (!amsdu || last_subframe)
		iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer, nssn);

	spin_unlock_bh(&buffer->lock);
	return true;

drop:
	kfree_skb(skb);
	spin_unlock_bh(&buffer->lock);
	return true;
}

static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm,
				    u32 reorder_data, u8 baid)
{
	unsigned long now = jiffies;
	unsigned long timeout;
	struct iwl_mvm_baid_data *data;

	rcu_read_lock();

	data = rcu_dereference(mvm->baid_map[baid]);
	if (!data) {
		IWL_DEBUG_RX(mvm,
			     "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
			      baid, reorder_data);
		goto out;
	}

	if (!data->timeout)
		goto out;

	timeout = data->timeout;
	/*
	 * Do not update last rx all the time to avoid cache bouncing
	 * between the rx queues.
	 * Update it every timeout. Worst case is the session will
	 * expire after ~ 2 * timeout, which doesn't matter that much.
	 */
	if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
		/* Update is atomic */
		data->last_rx = now;

out:
	rcu_read_unlock();
}

static void iwl_mvm_flip_address(u8 *addr)
{
	int i;
	u8 mac_addr[ETH_ALEN];

	for (i = 0; i < ETH_ALEN; i++)
		mac_addr[i] = addr[ETH_ALEN - i - 1];
	ether_addr_copy(addr, mac_addr);
}

void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
			struct iwl_rx_cmd_buffer *rxb, int queue)
{
	struct ieee80211_rx_status *rx_status;
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
	struct ieee80211_hdr *hdr;
	u32 len = le16_to_cpu(desc->mpdu_len);
	u32 rate_n_flags, gp2_on_air_rise;
	u16 phy_info = le16_to_cpu(desc->phy_info);
	struct ieee80211_sta *sta = NULL;
	struct sk_buff *skb;
	u8 crypt_len = 0, channel, energy_a, energy_b;
	struct ieee80211_radiotap_he *he = NULL;
	struct ieee80211_radiotap_he_mu *he_mu = NULL;
	u32 he_type = 0xffffffff;
	/* this is invalid e.g. because puncture type doesn't allow 0b11 */
#define HE_PHY_DATA_INVAL ((u64)-1)
	u64 he_phy_data = HE_PHY_DATA_INVAL;
	size_t desc_size;

	if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
		return;

	if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) {
		rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags);
		channel = desc->v3.channel;
		gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
		energy_a = desc->v3.energy_a;
		energy_b = desc->v3.energy_b;
		desc_size = sizeof(*desc);
	} else {
		rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags);
		channel = desc->v1.channel;
		gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
		energy_a = desc->v1.energy_a;
		energy_b = desc->v1.energy_b;
		desc_size = IWL_RX_DESC_SIZE_V1;
	}

	hdr = (void *)(pkt->data + desc_size);
	/* Dont use dev_alloc_skb(), we'll have enough headroom once
	 * ieee80211_hdr pulled.
	 */
	skb = alloc_skb(128, GFP_ATOMIC);
	if (!skb) {
		IWL_ERR(mvm, "alloc_skb failed\n");
		return;
	}

	if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
		/*
		 * If the device inserted padding it means that (it thought)
		 * the 802.11 header wasn't a multiple of 4 bytes long. In
		 * this case, reserve two bytes at the start of the SKB to
		 * align the payload properly in case we end up copying it.
		 */
		skb_reserve(skb, 2);
	}

	rx_status = IEEE80211_SKB_RXCB(skb);

	if (rate_n_flags & RATE_MCS_HE_MSK) {
		static const struct ieee80211_radiotap_he known = {
			.data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
					     IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
					     IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN |
					     IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN),
			.data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN |
					     IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN),
		};
		static const struct ieee80211_radiotap_he_mu mu_known = {
			.flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN |
					      IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN |
					      IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN |
					      IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN),
			.flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN),
		};
		unsigned int radiotap_len = 0;

		he = skb_put_data(skb, &known, sizeof(known));
		radiotap_len += sizeof(known);
		rx_status->flag |= RX_FLAG_RADIOTAP_HE;

		he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;

		if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) {
			if (mvm->trans->cfg->device_family >=
			    IWL_DEVICE_FAMILY_22560)
				he_phy_data = le64_to_cpu(desc->v3.he_phy_data);
			else
				he_phy_data = le64_to_cpu(desc->v1.he_phy_data);

			if (he_type == RATE_MCS_HE_TYPE_MU) {
				he_mu = skb_put_data(skb, &mu_known,
						     sizeof(mu_known));
				radiotap_len += sizeof(mu_known);
				rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
			}
		}

		/* temporarily hide the radiotap data */
		__skb_pull(skb, radiotap_len);
	}

	rx_status = IEEE80211_SKB_RXCB(skb);

	if (iwl_mvm_rx_crypto(mvm, hdr, rx_status, phy_info, desc,
			      le32_to_cpu(pkt->len_n_flags), queue,
			      &crypt_len)) {
		kfree_skb(skb);
		return;
	}

	/*
	 * Keep packets with CRC errors (and with overrun) for monitor mode
	 * (otherwise the firmware discards them) but mark them as bad.
	 */
	if (!(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_CRC_OK)) ||
	    !(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
		IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
			     le16_to_cpu(desc->status));
		rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
	}
	/* set the preamble flag if appropriate */
	if (phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
		rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;

	if (likely(!(phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
		u64 tsf_on_air_rise;

		if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
			tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise);
		else
			tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise);

		rx_status->mactime = tsf_on_air_rise;
		/* TSF as indicated by the firmware is at INA time */
		rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
	} else if (he_type == RATE_MCS_HE_TYPE_SU) {
		u64 he_phy_data;

		if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
			he_phy_data = le64_to_cpu(desc->v3.he_phy_data);
		else
			he_phy_data = le64_to_cpu(desc->v1.he_phy_data);

		he->data1 |=
			cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
		if (FIELD_GET(IWL_RX_HE_PHY_UPLINK,
			      he_phy_data))
			he->data3 |=
				cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA3_UL_DL);

		if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
			rx_status->ampdu_reference = mvm->ampdu_ref;
			mvm->ampdu_ref++;

			rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
			rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
			if (FIELD_GET(IWL_RX_HE_PHY_DELIM_EOF,
				      he_phy_data))
				rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
		}
	} else if (he_mu && he_phy_data != HE_PHY_DATA_INVAL) {
		he_mu->flags1 |=
			le16_encode_bits(FIELD_GET(IWL_RX_HE_PHY_SIBG_SYM_OR_USER_NUM_MASK,
						   he_phy_data),
					 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
		he_mu->flags1 |=
			le16_encode_bits(FIELD_GET(IWL_RX_HE_PHY_SIGB_DCM,
						   he_phy_data),
					 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
		he_mu->flags1 |=
			le16_encode_bits(FIELD_GET(IWL_RX_HE_PHY_SIGB_MCS_MASK,
						   he_phy_data),
					 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
		he_mu->flags2 |=
			le16_encode_bits(FIELD_GET(IWL_RX_HE_PHY_SIGB_COMPRESSION,
						   he_phy_data),
					 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
		he_mu->flags2 |=
			le16_encode_bits(FIELD_GET(IWL_RX_HE_PHY_PREAMBLE_PUNC_TYPE_MASK,
						   he_phy_data),
					 IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
	}
	rx_status->device_timestamp = gp2_on_air_rise;
	rx_status->band = channel > 14 ? NL80211_BAND_5GHZ :
		NL80211_BAND_2GHZ;
	rx_status->freq = ieee80211_channel_to_frequency(channel,
							 rx_status->band);
	iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a,
				    energy_b);

	/* update aggregation data for monitor sake on default queue */
	if (!queue && (phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
		bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
		u64 he_phy_data;

		if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
			he_phy_data = le64_to_cpu(desc->v3.he_phy_data);
		else
			he_phy_data = le64_to_cpu(desc->v1.he_phy_data);

		rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
		rx_status->ampdu_reference = mvm->ampdu_ref;
		/* toggle is switched whenever new aggregation starts */
		if (toggle_bit != mvm->ampdu_toggle) {
			mvm->ampdu_ref++;
			mvm->ampdu_toggle = toggle_bit;

			if (he_phy_data != HE_PHY_DATA_INVAL &&
			    he_type == RATE_MCS_HE_TYPE_MU) {
				rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
				if (FIELD_GET(IWL_RX_HE_PHY_DELIM_EOF,
					      he_phy_data))
					rx_status->flag |=
						RX_FLAG_AMPDU_EOF_BIT;
			}
		}
	}

	rcu_read_lock();

	if (desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
		u8 id = desc->sta_id_flags & IWL_RX_MPDU_SIF_STA_ID_MASK;

		if (!WARN_ON_ONCE(id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) {
			sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
			if (IS_ERR(sta))
				sta = NULL;
		}
	} else if (!is_multicast_ether_addr(hdr->addr2)) {
		/*
		 * This is fine since we prevent two stations with the same
		 * address from being added.
		 */
		sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
	}

	if (sta) {
		struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
		struct ieee80211_vif *tx_blocked_vif =
			rcu_dereference(mvm->csa_tx_blocked_vif);
		u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
			       IWL_RX_MPDU_REORDER_BAID_MASK) >>
			       IWL_RX_MPDU_REORDER_BAID_SHIFT);

		if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
		    !is_multicast_ether_addr(hdr->addr1) &&
		    ieee80211_is_data(hdr->frame_control) &&
		    time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
			schedule_delayed_work(&mvm->tcm.work, 0);

		/*
		 * We have tx blocked stations (with CS bit). If we heard
		 * frames from a blocked station on a new channel we can
		 * TX to it again.
		 */
		if (unlikely(tx_blocked_vif) &&
		    tx_blocked_vif == mvmsta->vif) {
			struct iwl_mvm_vif *mvmvif =
				iwl_mvm_vif_from_mac80211(tx_blocked_vif);

			if (mvmvif->csa_target_freq == rx_status->freq)
				iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
								 false);
		}

		rs_update_last_rssi(mvm, mvmsta, rx_status);

		if (iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_RSSI) &&
		    ieee80211_is_beacon(hdr->frame_control)) {
			struct iwl_fw_dbg_trigger_tlv *trig;
			struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
			bool trig_check;
			s32 rssi;

			trig = iwl_fw_dbg_get_trigger(mvm->fw,
						      FW_DBG_TRIGGER_RSSI);
			rssi_trig = (void *)trig->data;
			rssi = le32_to_cpu(rssi_trig->rssi);

			trig_check =
				iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
							      ieee80211_vif_to_wdev(mvmsta->vif),
							      trig);
			if (trig_check && rx_status->signal < rssi)
				iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
							NULL);
		}

		if (ieee80211_is_data(hdr->frame_control))
			iwl_mvm_rx_csum(sta, skb, desc);

		if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) {
			kfree_skb(skb);
			goto out;
		}

		/*
		 * Our hardware de-aggregates AMSDUs but copies the mac header
		 * as it to the de-aggregated MPDUs. We need to turn off the
		 * AMSDU bit in the QoS control ourselves.
		 * In addition, HW reverses addr3 and addr4 - reverse it back.
		 */
		if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
		    !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
			u8 *qc = ieee80211_get_qos_ctl(hdr);

			*qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;

			if (mvm->trans->cfg->device_family ==
			    IWL_DEVICE_FAMILY_9000) {
				iwl_mvm_flip_address(hdr->addr3);

				if (ieee80211_has_a4(hdr->frame_control))
					iwl_mvm_flip_address(hdr->addr4);
			}
		}
		if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) {
			u32 reorder_data = le32_to_cpu(desc->reorder_data);

			iwl_mvm_agg_rx_received(mvm, reorder_data, baid);
		}
	}

	switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
	case RATE_MCS_CHAN_WIDTH_20:
		break;
	case RATE_MCS_CHAN_WIDTH_40:
		rx_status->bw = RATE_INFO_BW_40;
		break;
	case RATE_MCS_CHAN_WIDTH_80:
		rx_status->bw = RATE_INFO_BW_80;
		break;
	case RATE_MCS_CHAN_WIDTH_160:
		rx_status->bw = RATE_INFO_BW_160;
		break;
	}

	if (he_type == RATE_MCS_HE_TYPE_EXT_SU &&
	    rate_n_flags & RATE_MCS_HE_106T_MSK) {
		rx_status->bw = RATE_INFO_BW_HE_RU;
		rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
	}

	if (rate_n_flags & RATE_MCS_HE_MSK &&
	    phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD &&
	    he_type == RATE_MCS_HE_TYPE_MU) {
		/*
		 * Unfortunately, we have to leave the mac80211 data
		 * incorrect for the case that we receive an HE-MU
		 * transmission and *don't* have the he_mu pointer,
		 * i.e. we don't have the phy data (due to the bits
		 * being used for TSF). This shouldn't happen though
		 * as management frames where we need the TSF/timers
		 * are not be transmitted in HE-MU, I think.
		 */
		u8 ru = FIELD_GET(IWL_RX_HE_PHY_RU_ALLOC_MASK, he_phy_data);
		u8 offs = 0;

		rx_status->bw = RATE_INFO_BW_HE_RU;

		switch (ru) {
		case 0 ... 36:
			rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;
			offs = ru;
			break;
		case 37 ... 52:
			rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;
			offs = ru - 37;
			break;
		case 53 ... 60:
			rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
			offs = ru - 53;
			break;
		case 61 ... 64:
			rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;
			offs = ru - 61;
			break;
		case 65 ... 66:
			rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;
			offs = ru - 65;
			break;
		case 67:
			rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;
			break;
		case 68:
			rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;
			break;
		}
		he->data2 |=
			le16_encode_bits(offs,
					 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
		he->data2 |=
			cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN);
		if (he_phy_data & IWL_RX_HE_PHY_RU_ALLOC_SEC80)
			he->data2 |=
				cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);
	} else if (he) {
		he->data1 |=
			cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
	}

	if (!(rate_n_flags & RATE_MCS_CCK_MSK) &&
	    rate_n_flags & RATE_MCS_SGI_MSK)
		rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
	if (rate_n_flags & RATE_HT_MCS_GF_MSK)
		rx_status->enc_flags |= RX_ENC_FLAG_HT_GF;
	if (rate_n_flags & RATE_MCS_LDPC_MSK)
		rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
	if (rate_n_flags & RATE_MCS_HT_MSK) {
		u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
				RATE_MCS_STBC_POS;
		rx_status->encoding = RX_ENC_HT;
		rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
		rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
	} else if (rate_n_flags & RATE_MCS_VHT_MSK) {
		u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
				RATE_MCS_STBC_POS;
		rx_status->nss =
			((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
						RATE_VHT_MCS_NSS_POS) + 1;
		rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
		rx_status->encoding = RX_ENC_VHT;
		rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
		if (rate_n_flags & RATE_MCS_BF_MSK)
			rx_status->enc_flags |= RX_ENC_FLAG_BF;
	} else if (he) {
		u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
				RATE_MCS_STBC_POS;
		rx_status->nss =
			((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
						RATE_VHT_MCS_NSS_POS) + 1;
		rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
		rx_status->encoding = RX_ENC_HE;
		rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
		if (rate_n_flags & RATE_MCS_BF_MSK)
			rx_status->enc_flags |= RX_ENC_FLAG_BF;

		rx_status->he_dcm =
			!!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK);

#define CHECK_TYPE(F)							\
	BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F !=	\
		     (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))

		CHECK_TYPE(SU);
		CHECK_TYPE(EXT_SU);
		CHECK_TYPE(MU);
		CHECK_TYPE(TRIG);

		he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS);

		if (rate_n_flags & RATE_MCS_BF_POS)
			he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF);

		switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >>
			RATE_MCS_HE_GI_LTF_POS) {
		case 0:
			rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
			break;
		case 1:
			rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
			break;
		case 2:
			rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
			break;
		case 3:
			if (rate_n_flags & RATE_MCS_SGI_MSK)
				rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
			else
				rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
			break;
		}

		switch (he_type) {
		case RATE_MCS_HE_TYPE_SU: {
			u16 val;

			/* LTF syms correspond to streams */
			he->data2 |=
				cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
			switch (rx_status->nss) {
			case 1:
				val = 0;
				break;
			case 2:
				val = 1;
				break;
			case 3:
			case 4:
				val = 2;
				break;
			case 5:
			case 6:
				val = 3;
				break;
			case 7:
			case 8:
				val = 4;
				break;
			default:
				WARN_ONCE(1, "invalid nss: %d\n",
					  rx_status->nss);
				val = 0;
			}
			he->data5 |=
				le16_encode_bits(val,
						 IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS);
			}
			break;
		case RATE_MCS_HE_TYPE_MU: {
			u16 val;
			u64 he_phy_data;

			if (mvm->trans->cfg->device_family >=
			    IWL_DEVICE_FAMILY_22560)
				he_phy_data = le64_to_cpu(desc->v3.he_phy_data);
			else
				he_phy_data = le64_to_cpu(desc->v1.he_phy_data);

			if (he_phy_data == HE_PHY_DATA_INVAL)
				break;

			val = FIELD_GET(IWL_RX_HE_PHY_HE_LTF_NUM_MASK,
					he_phy_data);

			he->data2 |=
				cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
			he->data5 |=
				cpu_to_le16(FIELD_PREP(
					IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS,
					val));
			}
			break;
		case RATE_MCS_HE_TYPE_EXT_SU:
		case RATE_MCS_HE_TYPE_TRIG:
			/* not supported yet */
			break;
		}
	} else {
		int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
							       rx_status->band);

		if (WARN(rate < 0 || rate > 0xFF,
			 "Invalid rate flags 0x%x, band %d,\n",
			 rate_n_flags, rx_status->band)) {
			kfree_skb(skb);
			goto out;
		}
		rx_status->rate_idx = rate;

	}

	/* management stuff on default queue */
	if (!queue) {
		if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
			      ieee80211_is_probe_resp(hdr->frame_control)) &&
			     mvm->sched_scan_pass_all ==
			     SCHED_SCAN_PASS_ALL_ENABLED))
			mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;

		if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
			     ieee80211_is_probe_resp(hdr->frame_control)))
			rx_status->boottime_ns = ktime_get_boot_ns();
	}

	iwl_mvm_create_skb(skb, hdr, len, crypt_len, rxb);
	if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc))
		iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta);
out:
	rcu_read_unlock();
}

void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
			      struct iwl_rx_cmd_buffer *rxb, int queue)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_frame_release *release = (void *)pkt->data;
	struct ieee80211_sta *sta;
	struct iwl_mvm_reorder_buffer *reorder_buf;
	struct iwl_mvm_baid_data *ba_data;

	int baid = release->baid;

	IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n",
		     release->baid, le16_to_cpu(release->nssn));

	if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
		return;

	rcu_read_lock();

	ba_data = rcu_dereference(mvm->baid_map[baid]);
	if (WARN_ON_ONCE(!ba_data))
		goto out;

	sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]);
	if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
		goto out;

	reorder_buf = &ba_data->reorder_buf[queue];

	spin_lock_bh(&reorder_buf->lock);
	iwl_mvm_release_frames(mvm, sta, napi, ba_data, reorder_buf,
			       le16_to_cpu(release->nssn));
	spin_unlock_bh(&reorder_buf->lock);

out:
	rcu_read_unlock();
}