1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
|
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (C) 2012-2014, 2018-2023 Intel Corporation
* Copyright (C) 2013-2015 Intel Mobile Communications GmbH
* Copyright (C) 2015-2017 Intel Deutschland GmbH
*/
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include "iwl-trans.h"
#include "mvm.h"
#include "fw-api.h"
#include "time-sync.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 = (void *)skb_mac_header(skb);
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_DEBUG_DROP(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 int iwl_mvm_create_skb(struct iwl_mvm *mvm, 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);
u8 mic_crc_len = u8_get_bits(desc->mac_flags1,
IWL_RX_MPDU_MFLG1_MIC_CRC_LEN_MASK) << 1;
if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
len -= 2;
pad_len = 2;
}
/*
* For non monitor interface strip the bytes the RADA might not have
* removed (it might be disabled, e.g. for mgmt frames). As a monitor
* interface cannot exist with other interfaces, this removal is safe
* and sufficient, in monitor mode there's no decryption being done.
*/
if (len > mic_crc_len && !ieee80211_hw_check(mvm->hw, RX_INCLUDES_FCS))
len -= mic_crc_len;
/* 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;
if (unlikely(headlen < hdrlen))
return -EINVAL;
/* Since data doesn't move data while putting data on skb and that is
* the only way we use, data + len is the next place that hdr would be put
*/
skb_set_mac_header(skb, skb->len);
skb_put_data(skb, hdr, hdrlen);
skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen);
/*
* If we did CHECKSUM_COMPLETE, the hardware only does it right for
* certain cases and starts the checksum after the SNAP. Check if
* this is the case - it's easier to just bail out to CHECKSUM_NONE
* in the cases the hardware didn't handle, since it's rare to see
* such packets, even though the hardware did calculate the checksum
* in this case, just starting after the MAC header instead.
*
* Starting from Bz hardware, it calculates starting directly after
* the MAC header, so that matches mac80211's expectation.
*/
if (skb->ip_summed == CHECKSUM_COMPLETE) {
struct {
u8 hdr[6];
__be16 type;
} __packed *shdr = (void *)((u8 *)hdr + hdrlen + pad_len);
if (unlikely(headlen - hdrlen < sizeof(*shdr) ||
!ether_addr_equal(shdr->hdr, rfc1042_header) ||
(shdr->type != htons(ETH_P_IP) &&
shdr->type != htons(ETH_P_ARP) &&
shdr->type != htons(ETH_P_IPV6) &&
shdr->type != htons(ETH_P_8021Q) &&
shdr->type != htons(ETH_P_PAE) &&
shdr->type != htons(ETH_P_TDLS))))
skb->ip_summed = CHECKSUM_NONE;
else if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_BZ)
/* mac80211 assumes full CSUM including SNAP header */
skb_postpush_rcsum(skb, shdr, sizeof(*shdr));
}
fraglen = len - headlen;
if (fraglen) {
int offset = (u8 *)hdr + headlen + pad_len -
(u8 *)rxb_addr(rxb) + rxb_offset(rxb);
skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
fraglen, rxb->truesize);
}
return 0;
}
/* put a TLV on the skb and return data pointer
*
* Also pad to 4 the len and zero out all data part
*/
static void *
iwl_mvm_radiotap_put_tlv(struct sk_buff *skb, u16 type, u16 len)
{
struct ieee80211_radiotap_tlv *tlv;
tlv = skb_put(skb, sizeof(*tlv));
tlv->type = cpu_to_le16(type);
tlv->len = cpu_to_le16(len);
return skb_put_zero(skb, ALIGN(len, 4));
}
static void iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm *mvm,
struct sk_buff *skb)
{
struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
struct ieee80211_radiotap_vendor_content *radiotap;
const u16 vendor_data_len = sizeof(mvm->cur_aid);
if (!mvm->cur_aid)
return;
radiotap = iwl_mvm_radiotap_put_tlv(skb,
IEEE80211_RADIOTAP_VENDOR_NAMESPACE,
sizeof(*radiotap) + vendor_data_len);
/* Intel OUI */
radiotap->oui[0] = 0xf6;
radiotap->oui[1] = 0x54;
radiotap->oui[2] = 0x25;
/* radiotap sniffer config sub-namespace */
radiotap->oui_subtype = 1;
radiotap->vendor_type = 0;
/* fill the data now */
memcpy(radiotap->data, &mvm->cur_aid, sizeof(mvm->cur_aid));
rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END;
}
/* 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_link_sta *link_sta)
{
if (unlikely(iwl_mvm_check_pn(mvm, skb, queue, sta))) {
kfree_skb(skb);
return;
}
if (sta && sta->valid_links && link_sta) {
struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
rx_status->link_valid = 1;
rx_status->link_id = link_sta->link_id;
}
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;
}
static int iwl_mvm_rx_mgmt_prot(struct ieee80211_sta *sta,
struct ieee80211_hdr *hdr,
struct iwl_rx_mpdu_desc *desc,
u32 status,
struct ieee80211_rx_status *stats)
{
struct iwl_mvm_sta *mvmsta;
struct iwl_mvm_vif *mvmvif;
u8 keyid;
struct ieee80211_key_conf *key;
u32 len = le16_to_cpu(desc->mpdu_len);
const u8 *frame = (void *)hdr;
if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) == IWL_RX_MPDU_STATUS_SEC_NONE)
return 0;
/*
* For non-beacon, we don't really care. But beacons may
* be filtered out, and we thus need the firmware's replay
* detection, otherwise beacons the firmware previously
* filtered could be replayed, or something like that, and
* it can filter a lot - though usually only if nothing has
* changed.
*/
if (!ieee80211_is_beacon(hdr->frame_control))
return 0;
/* key mismatch - will also report !MIC_OK but we shouldn't count it */
if (!(status & IWL_RX_MPDU_STATUS_KEY_VALID))
return -1;
/* good cases */
if (likely(status & IWL_RX_MPDU_STATUS_MIC_OK &&
!(status & IWL_RX_MPDU_STATUS_REPLAY_ERROR))) {
stats->flag |= RX_FLAG_DECRYPTED;
return 0;
}
if (!sta)
return -1;
mvmsta = iwl_mvm_sta_from_mac80211(sta);
mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
/*
* both keys will have the same cipher and MIC length, use
* whichever one is available
*/
key = rcu_dereference(mvmvif->bcn_prot.keys[0]);
if (!key) {
key = rcu_dereference(mvmvif->bcn_prot.keys[1]);
if (!key)
return -1;
}
if (len < key->icv_len + IEEE80211_GMAC_PN_LEN + 2)
return -1;
/* get the real key ID */
keyid = frame[len - key->icv_len - IEEE80211_GMAC_PN_LEN - 2];
/* and if that's the other key, look it up */
if (keyid != key->keyidx) {
/*
* shouldn't happen since firmware checked, but be safe
* in case the MIC length is wrong too, for example
*/
if (keyid != 6 && keyid != 7)
return -1;
key = rcu_dereference(mvmvif->bcn_prot.keys[keyid - 6]);
if (!key)
return -1;
}
/* Report status to mac80211 */
if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
ieee80211_key_mic_failure(key);
else if (status & IWL_RX_MPDU_STATUS_REPLAY_ERROR)
ieee80211_key_replay(key);
return -1;
}
static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
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)
{
u32 status = le32_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) {
IWL_DEBUG_DROP(mvm, "Dropping packets, bad enc status\n");
return -1;
}
if (unlikely(ieee80211_is_mgmt(hdr->frame_control) &&
!ieee80211_has_protected(hdr->frame_control)))
return iwl_mvm_rx_mgmt_prot(sta, hdr, desc, status, stats);
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 | 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;
if (mvm->trans->trans_cfg->gen2 &&
!(status & RX_MPDU_RES_STATUS_MIC_OK))
stats->flag |= RX_FLAG_MMIC_ERROR;
*crypt_len = IEEE80211_TKIP_IV_LEN;
fallthrough;
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;
if (mvm->trans->trans_cfg->gen2)
stats->flag |= RX_FLAG_MMIC_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;
case RX_MPDU_RES_STATUS_SEC_CMAC_GMAC_ENC:
break;
default:
/*
* Sometimes we can get frames that were not decrypted
* because the firmware didn't have the keys yet. This can
* happen after connection where we can get multicast frames
* before the GTK is installed.
* Silently drop those frames.
* Also drop un-decrypted frames in monitor mode.
*/
if (!is_multicast_ether_addr(hdr->addr1) &&
!mvm->monitor_on && net_ratelimit())
IWL_WARN(mvm, "Unhandled alg: 0x%x\n", status);
}
return 0;
}
static void iwl_mvm_rx_csum(struct iwl_mvm *mvm,
struct ieee80211_sta *sta,
struct sk_buff *skb,
struct iwl_rx_packet *pkt)
{
struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
if (pkt->len_n_flags & cpu_to_le32(FH_RSCSR_RPA_EN)) {
u16 hwsum = be16_to_cpu(desc->v3.raw_xsum);
skb->ip_summed = CHECKSUM_COMPLETE;
skb->csum = csum_unfold(~(__force __sum16)hwsum);
}
} else {
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
struct iwl_mvm_vif *mvmvif;
u16 flags = le16_to_cpu(desc->l3l4_flags);
u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >>
IWL_RX_L3_PROTO_POS);
mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
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 or invalid tid 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);
if (tid >= IWL_MAX_TID_COUNT)
return true;
} 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;
}
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);
while (ieee80211_sn_less(ssn, nssn)) {
int index = ssn % reorder_buf->buf_size;
struct sk_buff_head *skb_list = &entries[index].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, NULL /* FIXME */);
reorder_buf->num_stored--;
}
}
reorder_buf->head_sn = nssn;
}
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;
u32 sta_id;
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;
/* pick any STA ID to find the pointer */
sta_id = ffs(ba_data->sta_mask) - 1;
sta = rcu_dereference(mvm->fw_id_to_mac_id[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);
out:
rcu_read_unlock();
}
static void iwl_mvm_release_frames_from_notif(struct iwl_mvm *mvm,
struct napi_struct *napi,
u8 baid, u16 nssn, int queue)
{
struct ieee80211_sta *sta;
struct iwl_mvm_reorder_buffer *reorder_buf;
struct iwl_mvm_baid_data *ba_data;
u32 sta_id;
IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n",
baid, nssn);
if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
baid >= ARRAY_SIZE(mvm->baid_map)))
return;
rcu_read_lock();
ba_data = rcu_dereference(mvm->baid_map[baid]);
if (!ba_data) {
WARN(true, "BAID %d not found in map\n", baid);
goto out;
}
/* pick any STA ID to find the pointer */
sta_id = ffs(ba_data->sta_mask) - 1;
sta = rcu_dereference(mvm->fw_id_to_mac_id[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, nssn);
spin_unlock_bh(&reorder_buf->lock);
out:
rcu_read_unlock();
}
void iwl_mvm_rx_queue_notif(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_rxq_sync_notification *notif;
struct iwl_mvm_internal_rxq_notif *internal_notif;
u32 len = iwl_rx_packet_payload_len(pkt);
notif = (void *)pkt->data;
internal_notif = (void *)notif->payload;
if (WARN_ONCE(len < sizeof(*notif) + sizeof(*internal_notif),
"invalid notification size %d (%d)",
len, (int)(sizeof(*notif) + sizeof(*internal_notif))))
return;
len -= sizeof(*notif) + sizeof(*internal_notif);
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:
WARN_ONCE(len, "invalid empty notification size %d", len);
break;
case IWL_MVM_RXQ_NOTIF_DEL_BA:
if (WARN_ONCE(len != sizeof(struct iwl_mvm_delba_data),
"invalid delba notification size %d (%d)",
len, (int)sizeof(struct iwl_mvm_delba_data)))
break;
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) {
WARN_ONCE(!test_and_clear_bit(queue, &mvm->queue_sync_state),
"queue sync: queue %d responded a second time!\n",
queue);
if (READ_ONCE(mvm->queue_sync_state) == 0)
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 = (void *)skb_mac_header(skb);
struct iwl_mvm_baid_data *baid_data;
struct iwl_mvm_reorder_buffer *buffer;
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;
u32 sta_mask;
int index;
u16 nssn, sn;
u8 baid;
baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
IWL_RX_MPDU_REORDER_BAID_SHIFT;
if (mvm->trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_9000)
return false;
/*
* 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.
* This also covers pure monitor mode, in which case we won't
* have any BA sessions.
*/
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;
/* 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;
}
rcu_read_lock();
sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
rcu_read_unlock();
if (IWL_FW_CHECK(mvm,
tid != baid_data->tid ||
!(sta_mask & baid_data->sta_mask),
"baid 0x%x is mapped to sta_mask:0x%x tid:%d, but was received for sta_mask:0x%x tid:%d\n",
baid, baid_data->sta_mask, baid_data->tid,
sta_mask, 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;
}
/* drop any duplicated packets */
if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_DUPLICATE))
goto drop;
/* drop any oudated packets */
if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN)
goto drop;
/* release immediately if allowed by nssn and no stored frames */
if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
if (!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;
}
/* put in reorder buffer */
index = sn % buffer->buf_size;
__skb_queue_tail(&entries[index].frames, skb);
buffer->num_stored++;
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);
}
struct iwl_mvm_rx_phy_data {
enum iwl_rx_phy_info_type info_type;
__le32 d0, d1, d2, d3, eht_d4, d5;
__le16 d4;
bool with_data;
bool first_subframe;
__le32 rx_vec[4];
u32 rate_n_flags;
u32 gp2_on_air_rise;
u16 phy_info;
u8 energy_a, energy_b;
u8 channel;
};
static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm,
struct iwl_mvm_rx_phy_data *phy_data,
struct ieee80211_radiotap_he_mu *he_mu)
{
u32 phy_data2 = le32_to_cpu(phy_data->d2);
u32 phy_data3 = le32_to_cpu(phy_data->d3);
u16 phy_data4 = le16_to_cpu(phy_data->d4);
u32 rate_n_flags = phy_data->rate_n_flags;
if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) {
he_mu->flags1 |=
cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN |
IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN);
he_mu->flags1 |=
le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU,
phy_data4),
IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU);
he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0,
phy_data2);
he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1,
phy_data3);
he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2,
phy_data2);
he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3,
phy_data3);
}
if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) &&
(rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) != RATE_MCS_CHAN_WIDTH_20) {
he_mu->flags1 |=
cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN |
IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN);
he_mu->flags2 |=
le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU,
phy_data4),
IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU);
he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0,
phy_data2);
he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1,
phy_data3);
he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2,
phy_data2);
he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3,
phy_data3);
}
}
static void
iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data,
struct ieee80211_radiotap_he *he,
struct ieee80211_radiotap_he_mu *he_mu,
struct ieee80211_rx_status *rx_status)
{
/*
* 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 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.
*/
u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK);
u32 rate_n_flags = phy_data->rate_n_flags;
u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK_V1;
u8 offs = 0;
rx_status->bw = RATE_INFO_BW_HE_RU;
he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
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 |
IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN);
if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80))
he->data2 |=
cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);
#define CHECK_BW(bw) \
BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \
RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \
BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \
RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS)
CHECK_BW(20);
CHECK_BW(40);
CHECK_BW(80);
CHECK_BW(160);
if (he_mu)
he_mu->flags2 |=
le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK_V1,
rate_n_flags),
IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW);
else if (he_type == RATE_MCS_HE_TYPE_TRIG_V1)
he->data6 |=
cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) |
le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK_V1,
rate_n_flags),
IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW);
}
static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm,
struct iwl_mvm_rx_phy_data *phy_data,
struct ieee80211_radiotap_he *he,
struct ieee80211_radiotap_he_mu *he_mu,
struct ieee80211_rx_status *rx_status,
int queue)
{
switch (phy_data->info_type) {
case IWL_RX_PHY_INFO_TYPE_NONE:
case IWL_RX_PHY_INFO_TYPE_CCK:
case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY:
case IWL_RX_PHY_INFO_TYPE_HT:
case IWL_RX_PHY_INFO_TYPE_VHT_SU:
case IWL_RX_PHY_INFO_TYPE_VHT_MU:
case IWL_RX_PHY_INFO_TYPE_EHT_MU:
case IWL_RX_PHY_INFO_TYPE_EHT_TB:
case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
return;
case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN |
IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN |
IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN |
IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN);
he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1),
IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1);
he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2),
IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2);
he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3),
IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3);
he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4),
IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4);
fallthrough;
case IWL_RX_PHY_INFO_TYPE_HE_SU:
case IWL_RX_PHY_INFO_TYPE_HE_MU:
case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
case IWL_RX_PHY_INFO_TYPE_HE_TB:
/* HE common */
he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN |
IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN |
IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN);
he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN |
IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN |
IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN |
IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK),
IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR);
if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB &&
phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) {
he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
IWL_RX_PHY_DATA0_HE_UPLINK),
IEEE80211_RADIOTAP_HE_DATA3_UL_DL);
}
he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM),
IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG);
he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK),
IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD);
he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
IWL_RX_PHY_DATA0_HE_PE_DISAMBIG),
IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG);
he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1,
IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK),
IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS);
he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK),
IEEE80211_RADIOTAP_HE_DATA6_TXOP);
he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
IWL_RX_PHY_DATA0_HE_DOPPLER),
IEEE80211_RADIOTAP_HE_DATA6_DOPPLER);
break;
}
switch (phy_data->info_type) {
case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
case IWL_RX_PHY_INFO_TYPE_HE_MU:
case IWL_RX_PHY_INFO_TYPE_HE_SU:
he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN);
he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0,
IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK),
IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE);
break;
default:
/* nothing here */
break;
}
switch (phy_data->info_type) {
case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
he_mu->flags1 |=
le16_encode_bits(le16_get_bits(phy_data->d4,
IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM),
IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
he_mu->flags1 |=
le16_encode_bits(le16_get_bits(phy_data->d4,
IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK),
IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
he_mu->flags2 |=
le16_encode_bits(le16_get_bits(phy_data->d4,
IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK),
IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
iwl_mvm_decode_he_mu_ext(mvm, phy_data, he_mu);
fallthrough;
case IWL_RX_PHY_INFO_TYPE_HE_MU:
he_mu->flags2 |=
le16_encode_bits(le32_get_bits(phy_data->d1,
IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK),
IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
he_mu->flags2 |=
le16_encode_bits(le32_get_bits(phy_data->d1,
IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION),
IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
fallthrough;
case IWL_RX_PHY_INFO_TYPE_HE_TB:
case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
iwl_mvm_decode_he_phy_ru_alloc(phy_data, he, he_mu, rx_status);
break;
case IWL_RX_PHY_INFO_TYPE_HE_SU:
he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN);
he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
IWL_RX_PHY_DATA0_HE_BEAM_CHNG),
IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE);
break;
default:
/* nothing */
break;
}
}
#define LE32_DEC_ENC(value, dec_bits, enc_bits) \
le32_encode_bits(le32_get_bits(value, dec_bits), enc_bits)
#define IWL_MVM_ENC_USIG_VALUE_MASK(usig, in_value, dec_bits, enc_bits) do { \
typeof(enc_bits) _enc_bits = enc_bits; \
typeof(usig) _usig = usig; \
(_usig)->mask |= cpu_to_le32(_enc_bits); \
(_usig)->value |= LE32_DEC_ENC(in_value, dec_bits, _enc_bits); \
} while (0)
#define __IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
eht->data[(rt_data)] |= \
(cpu_to_le32 \
(IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru ## _KNOWN) | \
LE32_DEC_ENC(data ## fw_data, \
IWL_RX_PHY_DATA ## fw_data ## _EHT_MU_EXT_RU_ALLOC_ ## fw_ru, \
IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru))
#define _IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
__IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru)
#define IEEE80211_RADIOTAP_RU_DATA_1_1_1 1
#define IEEE80211_RADIOTAP_RU_DATA_2_1_1 2
#define IEEE80211_RADIOTAP_RU_DATA_1_1_2 2
#define IEEE80211_RADIOTAP_RU_DATA_2_1_2 2
#define IEEE80211_RADIOTAP_RU_DATA_1_2_1 3
#define IEEE80211_RADIOTAP_RU_DATA_2_2_1 3
#define IEEE80211_RADIOTAP_RU_DATA_1_2_2 3
#define IEEE80211_RADIOTAP_RU_DATA_2_2_2 4
#define IWL_RX_RU_DATA_A1 2
#define IWL_RX_RU_DATA_A2 2
#define IWL_RX_RU_DATA_B1 2
#define IWL_RX_RU_DATA_B2 4
#define IWL_RX_RU_DATA_C1 3
#define IWL_RX_RU_DATA_C2 3
#define IWL_RX_RU_DATA_D1 4
#define IWL_RX_RU_DATA_D2 4
#define IWL_MVM_ENC_EHT_RU(rt_ru, fw_ru) \
_IWL_MVM_ENC_EHT_RU(IEEE80211_RADIOTAP_RU_DATA_ ## rt_ru, \
rt_ru, \
IWL_RX_RU_DATA_ ## fw_ru, \
fw_ru)
static void iwl_mvm_decode_eht_ext_mu(struct iwl_mvm *mvm,
struct iwl_mvm_rx_phy_data *phy_data,
struct ieee80211_rx_status *rx_status,
struct ieee80211_radiotap_eht *eht,
struct ieee80211_radiotap_eht_usig *usig)
{
if (phy_data->with_data) {
__le32 data1 = phy_data->d1;
__le32 data2 = phy_data->d2;
__le32 data3 = phy_data->d3;
__le32 data4 = phy_data->eht_d4;
__le32 data5 = phy_data->d5;
u32 phy_bw = phy_data->rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK;
IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
IWL_RX_PHY_DATA5_EHT_MU_PUNC_CH_CODE,
IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, data4,
IWL_RX_PHY_DATA4_EHT_MU_EXT_SIGB_MCS,
IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
IWL_MVM_ENC_USIG_VALUE_MASK
(usig, data1, IWL_RX_PHY_DATA1_EHT_MU_NUM_SIG_SYM_USIGA2,
IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
eht->user_info[0] |=
cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID_KNOWN) |
LE32_DEC_ENC(data5, IWL_RX_PHY_DATA5_EHT_MU_STA_ID_USR,
IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID);
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NR_NON_OFDMA_USERS_M);
eht->data[7] |= LE32_DEC_ENC
(data5, IWL_RX_PHY_DATA5_EHT_MU_NUM_USR_NON_OFDMA,
IEEE80211_RADIOTAP_EHT_DATA7_NUM_OF_NON_OFDMA_USERS);
/*
* Hardware labels the content channels/RU allocation values
* as follows:
* Content Channel 1 Content Channel 2
* 20 MHz: A1
* 40 MHz: A1 B1
* 80 MHz: A1 C1 B1 D1
* 160 MHz: A1 C1 A2 C2 B1 D1 B2 D2
* 320 MHz: A1 C1 A2 C2 A3 C3 A4 C4 B1 D1 B2 D2 B3 D3 B4 D4
*
* However firmware can only give us A1-D2, so the higher
* frequencies are missing.
*/
switch (phy_bw) {
case RATE_MCS_CHAN_WIDTH_320:
/* additional values are missing in RX metadata */
case RATE_MCS_CHAN_WIDTH_160:
/* content channel 1 */
IWL_MVM_ENC_EHT_RU(1_2_1, A2);
IWL_MVM_ENC_EHT_RU(1_2_2, C2);
/* content channel 2 */
IWL_MVM_ENC_EHT_RU(2_2_1, B2);
IWL_MVM_ENC_EHT_RU(2_2_2, D2);
fallthrough;
case RATE_MCS_CHAN_WIDTH_80:
/* content channel 1 */
IWL_MVM_ENC_EHT_RU(1_1_2, C1);
/* content channel 2 */
IWL_MVM_ENC_EHT_RU(2_1_2, D1);
fallthrough;
case RATE_MCS_CHAN_WIDTH_40:
/* content channel 2 */
IWL_MVM_ENC_EHT_RU(2_1_1, B1);
fallthrough;
case RATE_MCS_CHAN_WIDTH_20:
IWL_MVM_ENC_EHT_RU(1_1_1, A1);
break;
}
} else {
__le32 usig_a1 = phy_data->rx_vec[0];
__le32 usig_a2 = phy_data->rx_vec[1];
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
IWL_RX_USIG_A1_DISREGARD,
IEEE80211_RADIOTAP_EHT_USIG1_MU_B20_B24_DISREGARD);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
IWL_RX_USIG_A1_VALIDATE,
IEEE80211_RADIOTAP_EHT_USIG1_MU_B25_VALIDATE);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
IWL_RX_USIG_A2_EHT_PPDU_TYPE,
IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
IEEE80211_RADIOTAP_EHT_USIG2_MU_B2_VALIDATE);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
IWL_RX_USIG_A2_EHT_PUNC_CHANNEL,
IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B8,
IEEE80211_RADIOTAP_EHT_USIG2_MU_B8_VALIDATE);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
IWL_RX_USIG_A2_EHT_SIG_MCS,
IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
IWL_MVM_ENC_USIG_VALUE_MASK
(usig, usig_a2, IWL_RX_USIG_A2_EHT_SIG_SYM_NUM,
IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
IWL_RX_USIG_A2_EHT_CRC_OK,
IEEE80211_RADIOTAP_EHT_USIG2_MU_B16_B19_CRC);
}
}
static void iwl_mvm_decode_eht_ext_tb(struct iwl_mvm *mvm,
struct iwl_mvm_rx_phy_data *phy_data,
struct ieee80211_rx_status *rx_status,
struct ieee80211_radiotap_eht *eht,
struct ieee80211_radiotap_eht_usig *usig)
{
if (phy_data->with_data) {
__le32 data5 = phy_data->d5;
IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE1,
IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE2,
IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
} else {
__le32 usig_a1 = phy_data->rx_vec[0];
__le32 usig_a2 = phy_data->rx_vec[1];
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
IWL_RX_USIG_A1_DISREGARD,
IEEE80211_RADIOTAP_EHT_USIG1_TB_B20_B25_DISREGARD);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
IWL_RX_USIG_A2_EHT_PPDU_TYPE,
IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
IEEE80211_RADIOTAP_EHT_USIG2_TB_B2_VALIDATE);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_1,
IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_2,
IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
IWL_RX_USIG_A2_EHT_TRIG_USIG2_DISREGARD,
IEEE80211_RADIOTAP_EHT_USIG2_TB_B11_B15_DISREGARD);
IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
IWL_RX_USIG_A2_EHT_CRC_OK,
IEEE80211_RADIOTAP_EHT_USIG2_TB_B16_B19_CRC);
}
}
static void iwl_mvm_decode_eht_ru(struct iwl_mvm *mvm,
struct ieee80211_rx_status *rx_status,
struct ieee80211_radiotap_eht *eht)
{
u32 ru = le32_get_bits(eht->data[8],
IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
enum nl80211_eht_ru_alloc nl_ru;
/* Using D1.5 Table 9-53a - Encoding of PS160 and RU Allocation subfields
* in an EHT variant User Info field
*/
switch (ru) {
case 0 ... 36:
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_26;
break;
case 37 ... 52:
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52;
break;
case 53 ... 60:
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106;
break;
case 61 ... 64:
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_242;
break;
case 65 ... 66:
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484;
break;
case 67:
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996;
break;
case 68:
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996;
break;
case 69:
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_4x996;
break;
case 70 ... 81:
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52P26;
break;
case 82 ... 89:
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106P26;
break;
case 90 ... 93:
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484P242;
break;
case 94 ... 95:
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484;
break;
case 96 ... 99:
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484P242;
break;
case 100 ... 103:
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996P484;
break;
case 104:
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996;
break;
case 105 ... 106:
nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996P484;
break;
default:
return;
}
rx_status->bw = RATE_INFO_BW_EHT_RU;
rx_status->eht.ru = nl_ru;
}
static void iwl_mvm_decode_eht_phy_data(struct iwl_mvm *mvm,
struct iwl_mvm_rx_phy_data *phy_data,
struct ieee80211_rx_status *rx_status,
struct ieee80211_radiotap_eht *eht,
struct ieee80211_radiotap_eht_usig *usig)
{
__le32 data0 = phy_data->d0;
__le32 data1 = phy_data->d1;
__le32 usig_a1 = phy_data->rx_vec[0];
u8 info_type = phy_data->info_type;
/* Not in EHT range */
if (info_type < IWL_RX_PHY_INFO_TYPE_EHT_MU ||
info_type > IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT)
return;
usig->common |= cpu_to_le32
(IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL_KNOWN |
IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR_KNOWN);
if (phy_data->with_data) {
usig->common |= LE32_DEC_ENC(data0,
IWL_RX_PHY_DATA0_EHT_UPLINK,
IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
usig->common |= LE32_DEC_ENC(data0,
IWL_RX_PHY_DATA0_EHT_BSS_COLOR_MASK,
IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
} else {
usig->common |= LE32_DEC_ENC(usig_a1,
IWL_RX_USIG_A1_UL_FLAG,
IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
usig->common |= LE32_DEC_ENC(usig_a1,
IWL_RX_USIG_A1_BSS_COLOR,
IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
}
if (fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_SNIFF_VALIDATE_SUPPORT)) {
usig->common |=
cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_CHECKED);
usig->common |=
LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_VALIDATE,
IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_OK);
}
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_SPATIAL_REUSE);
eht->data[0] |= LE32_DEC_ENC(data0,
IWL_RX_PHY_DATA0_ETH_SPATIAL_REUSE_MASK,
IEEE80211_RADIOTAP_EHT_DATA0_SPATIAL_REUSE);
/* All RU allocating size/index is in TB format */
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_RU_ALLOC_TB_FMT);
eht->data[8] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PS160,
IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_PS_160);
eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B0,
IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B0);
eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B1_B7,
IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
iwl_mvm_decode_eht_ru(mvm, rx_status, eht);
/* We only get here in case of IWL_RX_MPDU_PHY_TSF_OVERLOAD is set
* which is on only in case of monitor mode so no need to check monitor
* mode
*/
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRIMARY_80);
eht->data[1] |=
le32_encode_bits(mvm->monitor_p80,
IEEE80211_RADIOTAP_EHT_DATA1_PRIMARY_80);
usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP_KNOWN);
if (phy_data->with_data)
usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_TXOP_DUR_MASK,
IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
else
usig->common |= LE32_DEC_ENC(usig_a1, IWL_RX_USIG_A1_TXOP_DURATION,
IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_LDPC_EXTRA_SYM_OM);
eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_LDPC_EXT_SYM,
IEEE80211_RADIOTAP_EHT_DATA0_LDPC_EXTRA_SYM_OM);
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRE_PADD_FACOR_OM);
eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PRE_FEC_PAD_MASK,
IEEE80211_RADIOTAP_EHT_DATA0_PRE_PADD_FACOR_OM);
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PE_DISAMBIGUITY_OM);
eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PE_DISAMBIG,
IEEE80211_RADIOTAP_EHT_DATA0_PE_DISAMBIGUITY_OM);
/* TODO: what about IWL_RX_PHY_DATA0_EHT_BW320_SLOT */
if (!le32_get_bits(data0, IWL_RX_PHY_DATA0_EHT_SIGA_CRC_OK))
usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BAD_USIG_CRC);
usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER_KNOWN);
usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PHY_VER,
IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER);
/*
* TODO: what about TB - IWL_RX_PHY_DATA1_EHT_TB_PILOT_TYPE,
* IWL_RX_PHY_DATA1_EHT_TB_LOW_SS
*/
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_EHT_LTF);
eht->data[0] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_SIG_LTF_NUM,
IEEE80211_RADIOTAP_EHT_DATA0_EHT_LTF);
if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT ||
info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB)
iwl_mvm_decode_eht_ext_tb(mvm, phy_data, rx_status, eht, usig);
if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT ||
info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU)
iwl_mvm_decode_eht_ext_mu(mvm, phy_data, rx_status, eht, usig);
}
static void iwl_mvm_rx_eht(struct iwl_mvm *mvm, struct sk_buff *skb,
struct iwl_mvm_rx_phy_data *phy_data,
int queue)
{
struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
struct ieee80211_radiotap_eht *eht;
struct ieee80211_radiotap_eht_usig *usig;
size_t eht_len = sizeof(*eht);
u32 rate_n_flags = phy_data->rate_n_flags;
u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
/* EHT and HE have the same valus for LTF */
u8 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
u16 phy_info = phy_data->phy_info;
u32 bw;
/* u32 for 1 user_info */
if (phy_data->with_data)
eht_len += sizeof(u32);
eht = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT, eht_len);
usig = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT_USIG,
sizeof(*usig));
rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END;
usig->common |=
cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW_KNOWN);
/* specific handling for 320MHz */
bw = FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK, rate_n_flags);
if (bw == RATE_MCS_CHAN_WIDTH_320_VAL)
bw += FIELD_GET(IWL_RX_PHY_DATA0_EHT_BW320_SLOT,
le32_to_cpu(phy_data->d0));
usig->common |= cpu_to_le32
(FIELD_PREP(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW, bw));
/* report the AMPDU-EOF bit on single frames */
if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
}
/* update aggregation data for monitor sake on default queue */
if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
(phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
}
if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
iwl_mvm_decode_eht_phy_data(mvm, phy_data, rx_status, eht, usig);
#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);
switch (FIELD_GET(RATE_MCS_HE_GI_LTF_MSK, rate_n_flags)) {
case 0:
if (he_type == RATE_MCS_HE_TYPE_TRIG) {
rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
} else {
rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
}
break;
case 1:
rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
break;
case 2:
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
if (he_type == RATE_MCS_HE_TYPE_TRIG)
rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
else
rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
break;
case 3:
if (he_type != RATE_MCS_HE_TYPE_TRIG) {
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
}
break;
default:
/* nothing here */
break;
}
if (ltf != IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN) {
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_GI);
eht->data[0] |= cpu_to_le32
(FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_LTF,
ltf) |
FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_GI,
rx_status->eht.gi));
}
if (!phy_data->with_data) {
eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NSS_S |
IEEE80211_RADIOTAP_EHT_KNOWN_BEAMFORMED_S);
eht->data[7] |=
le32_encode_bits(le32_get_bits(phy_data->rx_vec[2],
RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK),
IEEE80211_RADIOTAP_EHT_DATA7_NSS_S);
if (rate_n_flags & RATE_MCS_BF_MSK)
eht->data[7] |=
cpu_to_le32(IEEE80211_RADIOTAP_EHT_DATA7_BEAMFORMED_S);
} else {
eht->user_info[0] |=
cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS_KNOWN |
IEEE80211_RADIOTAP_EHT_USER_INFO_CODING_KNOWN |
IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_KNOWN_O |
IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_KNOWN_O |
IEEE80211_RADIOTAP_EHT_USER_INFO_DATA_FOR_USER);
if (rate_n_flags & RATE_MCS_BF_MSK)
eht->user_info[0] |=
cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_O);
if (rate_n_flags & RATE_MCS_LDPC_MSK)
eht->user_info[0] |=
cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_CODING);
eht->user_info[0] |= cpu_to_le32
(FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS,
FIELD_GET(RATE_VHT_MCS_RATE_CODE_MSK,
rate_n_flags)) |
FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_O,
FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags)));
}
}
static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
struct iwl_mvm_rx_phy_data *phy_data,
int queue)
{
struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
struct ieee80211_radiotap_he *he = NULL;
struct ieee80211_radiotap_he_mu *he_mu = NULL;
u32 rate_n_flags = phy_data->rate_n_flags;
u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
u8 ltf;
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 |
IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
};
u16 phy_info = phy_data->phy_info;
he = skb_put_data(skb, &known, sizeof(known));
rx_status->flag |= RX_FLAG_RADIOTAP_HE;
if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU ||
phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) {
he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known));
rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
}
/* report the AMPDU-EOF bit on single frames */
if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
}
if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status,
queue);
/* update aggregation data for monitor sake on default queue */
if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
(phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
}
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;
}
/* actually data is filled in mac80211 */
if (he_type == RATE_MCS_HE_TYPE_SU ||
he_type == RATE_MCS_HE_TYPE_EXT_SU)
he->data1 |=
cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
#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_MSK)
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:
if (he_type == RATE_MCS_HE_TYPE_TRIG)
rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
else
rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
if (he_type == RATE_MCS_HE_TYPE_MU)
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
else
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
break;
case 1:
if (he_type == RATE_MCS_HE_TYPE_TRIG)
rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
else
rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
break;
case 2:
if (he_type == RATE_MCS_HE_TYPE_TRIG) {
rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
} else {
rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
}
break;
case 3:
rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
break;
case 4:
rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
break;
default:
ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
}
he->data5 |= le16_encode_bits(ltf,
IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
}
static void iwl_mvm_decode_lsig(struct sk_buff *skb,
struct iwl_mvm_rx_phy_data *phy_data)
{
struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
struct ieee80211_radiotap_lsig *lsig;
switch (phy_data->info_type) {
case IWL_RX_PHY_INFO_TYPE_HT:
case IWL_RX_PHY_INFO_TYPE_VHT_SU:
case IWL_RX_PHY_INFO_TYPE_VHT_MU:
case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
case IWL_RX_PHY_INFO_TYPE_HE_SU:
case IWL_RX_PHY_INFO_TYPE_HE_MU:
case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
case IWL_RX_PHY_INFO_TYPE_HE_TB:
case IWL_RX_PHY_INFO_TYPE_EHT_MU:
case IWL_RX_PHY_INFO_TYPE_EHT_TB:
case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
lsig = skb_put(skb, sizeof(*lsig));
lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN);
lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1,
IWL_RX_PHY_DATA1_LSIG_LEN_MASK),
IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH);
rx_status->flag |= RX_FLAG_RADIOTAP_LSIG;
break;
default:
break;
}
}
static inline u8 iwl_mvm_nl80211_band_from_rx_msdu(u8 phy_band)
{
switch (phy_band) {
case PHY_BAND_24:
return NL80211_BAND_2GHZ;
case PHY_BAND_5:
return NL80211_BAND_5GHZ;
case PHY_BAND_6:
return NL80211_BAND_6GHZ;
default:
WARN_ONCE(1, "Unsupported phy band (%u)\n", phy_band);
return NL80211_BAND_5GHZ;
}
}
struct iwl_rx_sta_csa {
bool all_sta_unblocked;
struct ieee80211_vif *vif;
};
static void iwl_mvm_rx_get_sta_block_tx(void *data, struct ieee80211_sta *sta)
{
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
struct iwl_rx_sta_csa *rx_sta_csa = data;
if (mvmsta->vif != rx_sta_csa->vif)
return;
if (mvmsta->disable_tx)
rx_sta_csa->all_sta_unblocked = false;
}
/*
* Note: requires also rx_status->band to be prefilled, as well
* as phy_data (apart from phy_data->info_type)
*/
static void iwl_mvm_rx_fill_status(struct iwl_mvm *mvm,
struct sk_buff *skb,
struct iwl_mvm_rx_phy_data *phy_data,
int queue)
{
struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
u32 rate_n_flags = phy_data->rate_n_flags;
u8 stbc = u32_get_bits(rate_n_flags, RATE_MCS_STBC_MSK);
u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
bool is_sgi;
phy_data->info_type = IWL_RX_PHY_INFO_TYPE_NONE;
if (phy_data->phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
phy_data->info_type =
le32_get_bits(phy_data->d1,
IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
/* This may be overridden by iwl_mvm_rx_he() to HE_RU */
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;
case RATE_MCS_CHAN_WIDTH_320:
rx_status->bw = RATE_INFO_BW_320;
break;
}
/* must be before L-SIG data */
if (format == RATE_MCS_HE_MSK)
iwl_mvm_rx_he(mvm, skb, phy_data, queue);
iwl_mvm_decode_lsig(skb, phy_data);
rx_status->device_timestamp = phy_data->gp2_on_air_rise;
rx_status->freq = ieee80211_channel_to_frequency(phy_data->channel,
rx_status->band);
iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags,
phy_data->energy_a, phy_data->energy_b);
/* using TLV format and must be after all fixed len fields */
if (format == RATE_MCS_EHT_MSK)
iwl_mvm_rx_eht(mvm, skb, phy_data, queue);
if (unlikely(mvm->monitor_on))
iwl_mvm_add_rtap_sniffer_config(mvm, skb);
is_sgi = format == RATE_MCS_HE_MSK ?
iwl_he_is_sgi(rate_n_flags) :
rate_n_flags & RATE_MCS_SGI_MSK;
if (!(format == RATE_MCS_CCK_MSK) && is_sgi)
rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
if (rate_n_flags & RATE_MCS_LDPC_MSK)
rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
switch (format) {
case RATE_MCS_VHT_MSK:
rx_status->encoding = RX_ENC_VHT;
break;
case RATE_MCS_HE_MSK:
rx_status->encoding = RX_ENC_HE;
rx_status->he_dcm =
!!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK);
break;
case RATE_MCS_EHT_MSK:
rx_status->encoding = RX_ENC_EHT;
break;
}
switch (format) {
case RATE_MCS_HT_MSK:
rx_status->encoding = RX_ENC_HT;
rx_status->rate_idx = RATE_HT_MCS_INDEX(rate_n_flags);
rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
break;
case RATE_MCS_VHT_MSK:
case RATE_MCS_HE_MSK:
case RATE_MCS_EHT_MSK:
rx_status->nss =
u32_get_bits(rate_n_flags, RATE_MCS_NSS_MSK) + 1;
rx_status->rate_idx = rate_n_flags & RATE_MCS_CODE_MSK;
rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
break;
default: {
int rate = iwl_mvm_legacy_hw_idx_to_mac80211_idx(rate_n_flags,
rx_status->band);
rx_status->rate_idx = rate;
if ((rate < 0 || rate > 0xFF)) {
rx_status->rate_idx = 0;
if (net_ratelimit())
IWL_ERR(mvm, "Invalid rate flags 0x%x, band %d,\n",
rate_n_flags, rx_status->band);
}
break;
}
}
}
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;
u32 pkt_len = iwl_rx_packet_payload_len(pkt);
struct ieee80211_sta *sta = NULL;
struct ieee80211_link_sta *link_sta = NULL;
struct sk_buff *skb;
u8 crypt_len = 0;
size_t desc_size;
struct iwl_mvm_rx_phy_data phy_data = {};
u32 format;
if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
return;
if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
desc_size = sizeof(*desc);
else
desc_size = IWL_RX_DESC_SIZE_V1;
if (unlikely(pkt_len < desc_size)) {
IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n");
return;
}
if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
phy_data.rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags);
phy_data.channel = desc->v3.channel;
phy_data.gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
phy_data.energy_a = desc->v3.energy_a;
phy_data.energy_b = desc->v3.energy_b;
phy_data.d0 = desc->v3.phy_data0;
phy_data.d1 = desc->v3.phy_data1;
phy_data.d2 = desc->v3.phy_data2;
phy_data.d3 = desc->v3.phy_data3;
phy_data.eht_d4 = desc->phy_eht_data4;
phy_data.d5 = desc->v3.phy_data5;
} else {
phy_data.rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags);
phy_data.channel = desc->v1.channel;
phy_data.gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
phy_data.energy_a = desc->v1.energy_a;
phy_data.energy_b = desc->v1.energy_b;
phy_data.d0 = desc->v1.phy_data0;
phy_data.d1 = desc->v1.phy_data1;
phy_data.d2 = desc->v1.phy_data2;
phy_data.d3 = desc->v1.phy_data3;
}
if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
REPLY_RX_MPDU_CMD, 0) < 4) {
phy_data.rate_n_flags = iwl_new_rate_from_v1(phy_data.rate_n_flags);
IWL_DEBUG_DROP(mvm, "Got old format rate, converting. New rate: 0x%x\n",
phy_data.rate_n_flags);
}
format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
len = le16_to_cpu(desc->mpdu_len);
if (unlikely(len + desc_size > pkt_len)) {
IWL_DEBUG_DROP(mvm, "FW lied about packet len\n");
return;
}
phy_data.with_data = true;
phy_data.phy_info = le16_to_cpu(desc->phy_info);
phy_data.d4 = desc->phy_data4;
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);
/*
* 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_le32(IWL_RX_MPDU_STATUS_CRC_OK)) ||
!(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
le32_to_cpu(desc->status));
rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
}
/* set the preamble flag if appropriate */
if (format == RATE_MCS_CCK_MSK &&
phy_data.phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
if (likely(!(phy_data.phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
u64 tsf_on_air_rise;
if (mvm->trans->trans_cfg->device_family >=
IWL_DEVICE_FAMILY_AX210)
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;
}
if (iwl_mvm_is_band_in_rx_supported(mvm)) {
u8 band = BAND_IN_RX_STATUS(desc->mac_phy_idx);
rx_status->band = iwl_mvm_nl80211_band_from_rx_msdu(band);
} else {
rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
NL80211_BAND_2GHZ;
}
/* update aggregation data for monitor sake on default queue */
if (!queue && (phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
bool toggle_bit;
toggle_bit = phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
/*
* Toggle is switched whenever new aggregation starts. Make
* sure ampdu_reference is never 0 so we can later use it to
* see if the frame was really part of an A-MPDU or not.
*/
if (toggle_bit != mvm->ampdu_toggle) {
mvm->ampdu_ref++;
if (mvm->ampdu_ref == 0)
mvm->ampdu_ref++;
mvm->ampdu_toggle = toggle_bit;
phy_data.first_subframe = true;
}
rx_status->ampdu_reference = mvm->ampdu_ref;
}
rcu_read_lock();
if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
u8 id = le32_get_bits(desc->status, IWL_RX_MPDU_STATUS_STA_ID);
if (!WARN_ON_ONCE(id >= mvm->fw->ucode_capa.num_stations)) {
sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
if (IS_ERR(sta))
sta = NULL;
link_sta = rcu_dereference(mvm->fw_id_to_link_sta[id]);
}
} 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 (iwl_mvm_rx_crypto(mvm, sta, hdr, rx_status, phy_data.phy_info, desc,
le32_to_cpu(pkt->len_n_flags), queue,
&crypt_len)) {
kfree_skb(skb);
goto out;
}
iwl_mvm_rx_fill_status(mvm, skb, &phy_data, queue);
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);
struct iwl_fw_dbg_trigger_tlv *trig;
struct ieee80211_vif *vif = mvmsta->vif;
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 == vif) {
struct iwl_mvm_vif *mvmvif =
iwl_mvm_vif_from_mac80211(tx_blocked_vif);
struct iwl_rx_sta_csa rx_sta_csa = {
.all_sta_unblocked = true,
.vif = tx_blocked_vif,
};
if (mvmvif->csa_target_freq == rx_status->freq)
iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
false);
ieee80211_iterate_stations_atomic(mvm->hw,
iwl_mvm_rx_get_sta_block_tx,
&rx_sta_csa);
if (rx_sta_csa.all_sta_unblocked) {
RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
/* Unblock BCAST / MCAST station */
iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
cancel_delayed_work(&mvm->cs_tx_unblock_dwork);
}
}
rs_update_last_rssi(mvm, mvmsta, rx_status);
trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
ieee80211_vif_to_wdev(vif),
FW_DBG_TRIGGER_RSSI);
if (trig && ieee80211_is_beacon(hdr->frame_control)) {
struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
s32 rssi;
rssi_trig = (void *)trig->data;
rssi = le32_to_cpu(rssi_trig->rssi);
if (rx_status->signal < rssi)
iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
NULL);
}
if (ieee80211_is_data(hdr->frame_control))
iwl_mvm_rx_csum(mvm, sta, skb, pkt);
if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) {
IWL_DEBUG_DROP(mvm, "Dropping duplicate packet 0x%x\n",
le16_to_cpu(hdr->seq_ctrl));
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->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);
}
}
/* 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_boottime_ns();
}
if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) {
kfree_skb(skb);
goto out;
}
if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc) &&
likely(!iwl_mvm_time_sync_frame(mvm, skb, hdr->addr2)) &&
likely(!iwl_mvm_mei_filter_scan(mvm, skb))) {
if (mvm->trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_9000 &&
(desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
!(desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME))
rx_status->flag |= RX_FLAG_AMSDU_MORE;
iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta,
link_sta);
}
out:
rcu_read_unlock();
}
void iwl_mvm_rx_monitor_no_data(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_no_data_ver_3 *desc = (void *)pkt->data;
u32 rssi;
u32 info_type;
struct ieee80211_sta *sta = NULL;
struct sk_buff *skb;
struct iwl_mvm_rx_phy_data phy_data;
u32 format;
if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
return;
if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(struct iwl_rx_no_data)))
return;
rssi = le32_to_cpu(desc->rssi);
info_type = le32_to_cpu(desc->info) & RX_NO_DATA_INFO_TYPE_MSK;
phy_data.d0 = desc->phy_info[0];
phy_data.d1 = desc->phy_info[1];
phy_data.phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD;
phy_data.gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time);
phy_data.rate_n_flags = le32_to_cpu(desc->rate);
phy_data.energy_a = u32_get_bits(rssi, RX_NO_DATA_CHAIN_A_MSK);
phy_data.energy_b = u32_get_bits(rssi, RX_NO_DATA_CHAIN_B_MSK);
phy_data.channel = u32_get_bits(rssi, RX_NO_DATA_CHANNEL_MSK);
phy_data.with_data = false;
phy_data.rx_vec[0] = desc->rx_vec[0];
phy_data.rx_vec[1] = desc->rx_vec[1];
if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
RX_NO_DATA_NOTIF, 0) < 2) {
IWL_DEBUG_DROP(mvm, "Got an old rate format. Old rate: 0x%x\n",
phy_data.rate_n_flags);
phy_data.rate_n_flags = iwl_new_rate_from_v1(phy_data.rate_n_flags);
IWL_DEBUG_DROP(mvm, " Rate after conversion to the new format: 0x%x\n",
phy_data.rate_n_flags);
}
format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
RX_NO_DATA_NOTIF, 0) >= 3) {
if (unlikely(iwl_rx_packet_payload_len(pkt) <
sizeof(struct iwl_rx_no_data_ver_3)))
/* invalid len for ver 3 */
return;
phy_data.rx_vec[2] = desc->rx_vec[2];
phy_data.rx_vec[3] = desc->rx_vec[3];
} else {
if (format == RATE_MCS_EHT_MSK)
/* no support for EHT before version 3 API */
return;
}
/* 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;
}
rx_status = IEEE80211_SKB_RXCB(skb);
/* 0-length PSDU */
rx_status->flag |= RX_FLAG_NO_PSDU;
switch (info_type) {
case RX_NO_DATA_INFO_TYPE_NDP:
rx_status->zero_length_psdu_type =
IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING;
break;
case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED:
case RX_NO_DATA_INFO_TYPE_TB_UNMATCHED:
rx_status->zero_length_psdu_type =
IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED;
break;
default:
rx_status->zero_length_psdu_type =
IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR;
break;
}
rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
NL80211_BAND_2GHZ;
iwl_mvm_rx_fill_status(mvm, skb, &phy_data, queue);
/* no more radio tap info should be put after this point.
*
* We mark it as mac header, for upper layers to know where
* all radio tap header ends.
*/
skb_reset_mac_header(skb);
/*
* Override the nss from the rx_vec since the rate_n_flags has
* only 2 bits for the nss which gives a max of 4 ss but there
* may be up to 8 spatial streams.
*/
switch (format) {
case RATE_MCS_VHT_MSK:
rx_status->nss =
le32_get_bits(desc->rx_vec[0],
RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1;
break;
case RATE_MCS_HE_MSK:
rx_status->nss =
le32_get_bits(desc->rx_vec[0],
RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1;
break;
case RATE_MCS_EHT_MSK:
rx_status->nss =
le32_get_bits(desc->rx_vec[2],
RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK) + 1;
}
rcu_read_lock();
ieee80211_rx_napi(mvm->hw, sta, skb, napi);
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;
if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
return;
iwl_mvm_release_frames_from_notif(mvm, napi, release->baid,
le16_to_cpu(release->nssn),
queue);
}
void iwl_mvm_rx_bar_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_bar_frame_release *release = (void *)pkt->data;
unsigned int baid = le32_get_bits(release->ba_info,
IWL_BAR_FRAME_RELEASE_BAID_MASK);
unsigned int nssn = le32_get_bits(release->ba_info,
IWL_BAR_FRAME_RELEASE_NSSN_MASK);
unsigned int sta_id = le32_get_bits(release->sta_tid,
IWL_BAR_FRAME_RELEASE_STA_MASK);
unsigned int tid = le32_get_bits(release->sta_tid,
IWL_BAR_FRAME_RELEASE_TID_MASK);
struct iwl_mvm_baid_data *baid_data;
if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
return;
if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
baid >= ARRAY_SIZE(mvm->baid_map)))
return;
rcu_read_lock();
baid_data = rcu_dereference(mvm->baid_map[baid]);
if (!baid_data) {
IWL_DEBUG_RX(mvm,
"Got valid BAID %d but not allocated, invalid BAR release!\n",
baid);
goto out;
}
if (WARN(tid != baid_data->tid || sta_id > IWL_MVM_STATION_COUNT_MAX ||
!(baid_data->sta_mask & BIT(sta_id)),
"baid 0x%x is mapped to sta_mask:0x%x tid:%d, but BAR release received for sta:%d tid:%d\n",
baid, baid_data->sta_mask, baid_data->tid, sta_id,
tid))
goto out;
IWL_DEBUG_DROP(mvm, "Received a BAR, expect packet loss: nssn %d\n",
nssn);
iwl_mvm_release_frames_from_notif(mvm, napi, baid, nssn, queue);
out:
rcu_read_unlock();
}
|