summaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/intel/iavf/iavf_main.c
blob: 45a1e88c9276aae7f089566b55b0b79b2d88f5eb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
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
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2013 - 2018 Intel Corporation. */

#include "iavf.h"
#include "iavf_prototype.h"
#include "iavf_client.h"
/* All iavf tracepoints are defined by the include below, which must
 * be included exactly once across the whole kernel with
 * CREATE_TRACE_POINTS defined
 */
#define CREATE_TRACE_POINTS
#include "iavf_trace.h"

static int iavf_setup_all_tx_resources(struct iavf_adapter *adapter);
static int iavf_setup_all_rx_resources(struct iavf_adapter *adapter);
static int iavf_close(struct net_device *netdev);
static void iavf_init_get_resources(struct iavf_adapter *adapter);
static int iavf_check_reset_complete(struct iavf_hw *hw);

char iavf_driver_name[] = "iavf";
static const char iavf_driver_string[] =
	"Intel(R) Ethernet Adaptive Virtual Function Network Driver";

static const char iavf_copyright[] =
	"Copyright (c) 2013 - 2018 Intel Corporation.";

/* iavf_pci_tbl - PCI Device ID Table
 *
 * Wildcard entries (PCI_ANY_ID) should come last
 * Last entry must be all 0s
 *
 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
 *   Class, Class Mask, private data (not used) }
 */
static const struct pci_device_id iavf_pci_tbl[] = {
	{PCI_VDEVICE(INTEL, IAVF_DEV_ID_VF), 0},
	{PCI_VDEVICE(INTEL, IAVF_DEV_ID_VF_HV), 0},
	{PCI_VDEVICE(INTEL, IAVF_DEV_ID_X722_VF), 0},
	{PCI_VDEVICE(INTEL, IAVF_DEV_ID_ADAPTIVE_VF), 0},
	/* required last entry */
	{0, }
};

MODULE_DEVICE_TABLE(pci, iavf_pci_tbl);

MODULE_ALIAS("i40evf");
MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
MODULE_DESCRIPTION("Intel(R) Ethernet Adaptive Virtual Function Network Driver");
MODULE_LICENSE("GPL v2");

static const struct net_device_ops iavf_netdev_ops;
struct workqueue_struct *iavf_wq;

int iavf_status_to_errno(enum iavf_status status)
{
	switch (status) {
	case IAVF_SUCCESS:
		return 0;
	case IAVF_ERR_PARAM:
	case IAVF_ERR_MAC_TYPE:
	case IAVF_ERR_INVALID_MAC_ADDR:
	case IAVF_ERR_INVALID_LINK_SETTINGS:
	case IAVF_ERR_INVALID_PD_ID:
	case IAVF_ERR_INVALID_QP_ID:
	case IAVF_ERR_INVALID_CQ_ID:
	case IAVF_ERR_INVALID_CEQ_ID:
	case IAVF_ERR_INVALID_AEQ_ID:
	case IAVF_ERR_INVALID_SIZE:
	case IAVF_ERR_INVALID_ARP_INDEX:
	case IAVF_ERR_INVALID_FPM_FUNC_ID:
	case IAVF_ERR_QP_INVALID_MSG_SIZE:
	case IAVF_ERR_INVALID_FRAG_COUNT:
	case IAVF_ERR_INVALID_ALIGNMENT:
	case IAVF_ERR_INVALID_PUSH_PAGE_INDEX:
	case IAVF_ERR_INVALID_IMM_DATA_SIZE:
	case IAVF_ERR_INVALID_VF_ID:
	case IAVF_ERR_INVALID_HMCFN_ID:
	case IAVF_ERR_INVALID_PBLE_INDEX:
	case IAVF_ERR_INVALID_SD_INDEX:
	case IAVF_ERR_INVALID_PAGE_DESC_INDEX:
	case IAVF_ERR_INVALID_SD_TYPE:
	case IAVF_ERR_INVALID_HMC_OBJ_INDEX:
	case IAVF_ERR_INVALID_HMC_OBJ_COUNT:
	case IAVF_ERR_INVALID_SRQ_ARM_LIMIT:
		return -EINVAL;
	case IAVF_ERR_NVM:
	case IAVF_ERR_NVM_CHECKSUM:
	case IAVF_ERR_PHY:
	case IAVF_ERR_CONFIG:
	case IAVF_ERR_UNKNOWN_PHY:
	case IAVF_ERR_LINK_SETUP:
	case IAVF_ERR_ADAPTER_STOPPED:
	case IAVF_ERR_PRIMARY_REQUESTS_PENDING:
	case IAVF_ERR_AUTONEG_NOT_COMPLETE:
	case IAVF_ERR_RESET_FAILED:
	case IAVF_ERR_BAD_PTR:
	case IAVF_ERR_SWFW_SYNC:
	case IAVF_ERR_QP_TOOMANY_WRS_POSTED:
	case IAVF_ERR_QUEUE_EMPTY:
	case IAVF_ERR_FLUSHED_QUEUE:
	case IAVF_ERR_OPCODE_MISMATCH:
	case IAVF_ERR_CQP_COMPL_ERROR:
	case IAVF_ERR_BACKING_PAGE_ERROR:
	case IAVF_ERR_NO_PBLCHUNKS_AVAILABLE:
	case IAVF_ERR_MEMCPY_FAILED:
	case IAVF_ERR_SRQ_ENABLED:
	case IAVF_ERR_ADMIN_QUEUE_ERROR:
	case IAVF_ERR_ADMIN_QUEUE_FULL:
	case IAVF_ERR_BAD_IWARP_CQE:
	case IAVF_ERR_NVM_BLANK_MODE:
	case IAVF_ERR_PE_DOORBELL_NOT_ENABLED:
	case IAVF_ERR_DIAG_TEST_FAILED:
	case IAVF_ERR_FIRMWARE_API_VERSION:
	case IAVF_ERR_ADMIN_QUEUE_CRITICAL_ERROR:
		return -EIO;
	case IAVF_ERR_DEVICE_NOT_SUPPORTED:
		return -ENODEV;
	case IAVF_ERR_NO_AVAILABLE_VSI:
	case IAVF_ERR_RING_FULL:
		return -ENOSPC;
	case IAVF_ERR_NO_MEMORY:
		return -ENOMEM;
	case IAVF_ERR_TIMEOUT:
	case IAVF_ERR_ADMIN_QUEUE_TIMEOUT:
		return -ETIMEDOUT;
	case IAVF_ERR_NOT_IMPLEMENTED:
	case IAVF_NOT_SUPPORTED:
		return -EOPNOTSUPP;
	case IAVF_ERR_ADMIN_QUEUE_NO_WORK:
		return -EALREADY;
	case IAVF_ERR_NOT_READY:
		return -EBUSY;
	case IAVF_ERR_BUF_TOO_SHORT:
		return -EMSGSIZE;
	}

	return -EIO;
}

int virtchnl_status_to_errno(enum virtchnl_status_code v_status)
{
	switch (v_status) {
	case VIRTCHNL_STATUS_SUCCESS:
		return 0;
	case VIRTCHNL_STATUS_ERR_PARAM:
	case VIRTCHNL_STATUS_ERR_INVALID_VF_ID:
		return -EINVAL;
	case VIRTCHNL_STATUS_ERR_NO_MEMORY:
		return -ENOMEM;
	case VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH:
	case VIRTCHNL_STATUS_ERR_CQP_COMPL_ERROR:
	case VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR:
		return -EIO;
	case VIRTCHNL_STATUS_ERR_NOT_SUPPORTED:
		return -EOPNOTSUPP;
	}

	return -EIO;
}

/**
 * iavf_pdev_to_adapter - go from pci_dev to adapter
 * @pdev: pci_dev pointer
 */
static struct iavf_adapter *iavf_pdev_to_adapter(struct pci_dev *pdev)
{
	return netdev_priv(pci_get_drvdata(pdev));
}

/**
 * iavf_allocate_dma_mem_d - OS specific memory alloc for shared code
 * @hw:   pointer to the HW structure
 * @mem:  ptr to mem struct to fill out
 * @size: size of memory requested
 * @alignment: what to align the allocation to
 **/
enum iavf_status iavf_allocate_dma_mem_d(struct iavf_hw *hw,
					 struct iavf_dma_mem *mem,
					 u64 size, u32 alignment)
{
	struct iavf_adapter *adapter = (struct iavf_adapter *)hw->back;

	if (!mem)
		return IAVF_ERR_PARAM;

	mem->size = ALIGN(size, alignment);
	mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size,
				     (dma_addr_t *)&mem->pa, GFP_KERNEL);
	if (mem->va)
		return 0;
	else
		return IAVF_ERR_NO_MEMORY;
}

/**
 * iavf_free_dma_mem_d - OS specific memory free for shared code
 * @hw:   pointer to the HW structure
 * @mem:  ptr to mem struct to free
 **/
enum iavf_status iavf_free_dma_mem_d(struct iavf_hw *hw,
				     struct iavf_dma_mem *mem)
{
	struct iavf_adapter *adapter = (struct iavf_adapter *)hw->back;

	if (!mem || !mem->va)
		return IAVF_ERR_PARAM;
	dma_free_coherent(&adapter->pdev->dev, mem->size,
			  mem->va, (dma_addr_t)mem->pa);
	return 0;
}

/**
 * iavf_allocate_virt_mem_d - OS specific memory alloc for shared code
 * @hw:   pointer to the HW structure
 * @mem:  ptr to mem struct to fill out
 * @size: size of memory requested
 **/
enum iavf_status iavf_allocate_virt_mem_d(struct iavf_hw *hw,
					  struct iavf_virt_mem *mem, u32 size)
{
	if (!mem)
		return IAVF_ERR_PARAM;

	mem->size = size;
	mem->va = kzalloc(size, GFP_KERNEL);

	if (mem->va)
		return 0;
	else
		return IAVF_ERR_NO_MEMORY;
}

/**
 * iavf_free_virt_mem_d - OS specific memory free for shared code
 * @hw:   pointer to the HW structure
 * @mem:  ptr to mem struct to free
 **/
enum iavf_status iavf_free_virt_mem_d(struct iavf_hw *hw,
				      struct iavf_virt_mem *mem)
{
	if (!mem)
		return IAVF_ERR_PARAM;

	/* it's ok to kfree a NULL pointer */
	kfree(mem->va);

	return 0;
}

/**
 * iavf_lock_timeout - try to lock mutex but give up after timeout
 * @lock: mutex that should be locked
 * @msecs: timeout in msecs
 *
 * Returns 0 on success, negative on failure
 **/
int iavf_lock_timeout(struct mutex *lock, unsigned int msecs)
{
	unsigned int wait, delay = 10;

	for (wait = 0; wait < msecs; wait += delay) {
		if (mutex_trylock(lock))
			return 0;

		msleep(delay);
	}

	return -1;
}

/**
 * iavf_schedule_reset - Set the flags and schedule a reset event
 * @adapter: board private structure
 **/
void iavf_schedule_reset(struct iavf_adapter *adapter)
{
	if (!(adapter->flags &
	      (IAVF_FLAG_RESET_PENDING | IAVF_FLAG_RESET_NEEDED))) {
		adapter->flags |= IAVF_FLAG_RESET_NEEDED;
		queue_work(iavf_wq, &adapter->reset_task);
	}
}

/**
 * iavf_schedule_request_stats - Set the flags and schedule statistics request
 * @adapter: board private structure
 *
 * Sets IAVF_FLAG_AQ_REQUEST_STATS flag so iavf_watchdog_task() will explicitly
 * request and refresh ethtool stats
 **/
void iavf_schedule_request_stats(struct iavf_adapter *adapter)
{
	adapter->aq_required |= IAVF_FLAG_AQ_REQUEST_STATS;
	mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
}

/**
 * iavf_tx_timeout - Respond to a Tx Hang
 * @netdev: network interface device structure
 * @txqueue: queue number that is timing out
 **/
static void iavf_tx_timeout(struct net_device *netdev, unsigned int txqueue)
{
	struct iavf_adapter *adapter = netdev_priv(netdev);

	adapter->tx_timeout_count++;
	iavf_schedule_reset(adapter);
}

/**
 * iavf_misc_irq_disable - Mask off interrupt generation on the NIC
 * @adapter: board private structure
 **/
static void iavf_misc_irq_disable(struct iavf_adapter *adapter)
{
	struct iavf_hw *hw = &adapter->hw;

	if (!adapter->msix_entries)
		return;

	wr32(hw, IAVF_VFINT_DYN_CTL01, 0);

	iavf_flush(hw);

	synchronize_irq(adapter->msix_entries[0].vector);
}

/**
 * iavf_misc_irq_enable - Enable default interrupt generation settings
 * @adapter: board private structure
 **/
static void iavf_misc_irq_enable(struct iavf_adapter *adapter)
{
	struct iavf_hw *hw = &adapter->hw;

	wr32(hw, IAVF_VFINT_DYN_CTL01, IAVF_VFINT_DYN_CTL01_INTENA_MASK |
				       IAVF_VFINT_DYN_CTL01_ITR_INDX_MASK);
	wr32(hw, IAVF_VFINT_ICR0_ENA1, IAVF_VFINT_ICR0_ENA1_ADMINQ_MASK);

	iavf_flush(hw);
}

/**
 * iavf_irq_disable - Mask off interrupt generation on the NIC
 * @adapter: board private structure
 **/
static void iavf_irq_disable(struct iavf_adapter *adapter)
{
	int i;
	struct iavf_hw *hw = &adapter->hw;

	if (!adapter->msix_entries)
		return;

	for (i = 1; i < adapter->num_msix_vectors; i++) {
		wr32(hw, IAVF_VFINT_DYN_CTLN1(i - 1), 0);
		synchronize_irq(adapter->msix_entries[i].vector);
	}
	iavf_flush(hw);
}

/**
 * iavf_irq_enable_queues - Enable interrupt for specified queues
 * @adapter: board private structure
 * @mask: bitmap of queues to enable
 **/
void iavf_irq_enable_queues(struct iavf_adapter *adapter, u32 mask)
{
	struct iavf_hw *hw = &adapter->hw;
	int i;

	for (i = 1; i < adapter->num_msix_vectors; i++) {
		if (mask & BIT(i - 1)) {
			wr32(hw, IAVF_VFINT_DYN_CTLN1(i - 1),
			     IAVF_VFINT_DYN_CTLN1_INTENA_MASK |
			     IAVF_VFINT_DYN_CTLN1_ITR_INDX_MASK);
		}
	}
}

/**
 * iavf_irq_enable - Enable default interrupt generation settings
 * @adapter: board private structure
 * @flush: boolean value whether to run rd32()
 **/
void iavf_irq_enable(struct iavf_adapter *adapter, bool flush)
{
	struct iavf_hw *hw = &adapter->hw;

	iavf_misc_irq_enable(adapter);
	iavf_irq_enable_queues(adapter, ~0);

	if (flush)
		iavf_flush(hw);
}

/**
 * iavf_msix_aq - Interrupt handler for vector 0
 * @irq: interrupt number
 * @data: pointer to netdev
 **/
static irqreturn_t iavf_msix_aq(int irq, void *data)
{
	struct net_device *netdev = data;
	struct iavf_adapter *adapter = netdev_priv(netdev);
	struct iavf_hw *hw = &adapter->hw;

	/* handle non-queue interrupts, these reads clear the registers */
	rd32(hw, IAVF_VFINT_ICR01);
	rd32(hw, IAVF_VFINT_ICR0_ENA1);

	if (adapter->state != __IAVF_REMOVE)
		/* schedule work on the private workqueue */
		queue_work(iavf_wq, &adapter->adminq_task);

	return IRQ_HANDLED;
}

/**
 * iavf_msix_clean_rings - MSIX mode Interrupt Handler
 * @irq: interrupt number
 * @data: pointer to a q_vector
 **/
static irqreturn_t iavf_msix_clean_rings(int irq, void *data)
{
	struct iavf_q_vector *q_vector = data;

	if (!q_vector->tx.ring && !q_vector->rx.ring)
		return IRQ_HANDLED;

	napi_schedule_irqoff(&q_vector->napi);

	return IRQ_HANDLED;
}

/**
 * iavf_map_vector_to_rxq - associate irqs with rx queues
 * @adapter: board private structure
 * @v_idx: interrupt number
 * @r_idx: queue number
 **/
static void
iavf_map_vector_to_rxq(struct iavf_adapter *adapter, int v_idx, int r_idx)
{
	struct iavf_q_vector *q_vector = &adapter->q_vectors[v_idx];
	struct iavf_ring *rx_ring = &adapter->rx_rings[r_idx];
	struct iavf_hw *hw = &adapter->hw;

	rx_ring->q_vector = q_vector;
	rx_ring->next = q_vector->rx.ring;
	rx_ring->vsi = &adapter->vsi;
	q_vector->rx.ring = rx_ring;
	q_vector->rx.count++;
	q_vector->rx.next_update = jiffies + 1;
	q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting);
	q_vector->ring_mask |= BIT(r_idx);
	wr32(hw, IAVF_VFINT_ITRN1(IAVF_RX_ITR, q_vector->reg_idx),
	     q_vector->rx.current_itr >> 1);
	q_vector->rx.current_itr = q_vector->rx.target_itr;
}

/**
 * iavf_map_vector_to_txq - associate irqs with tx queues
 * @adapter: board private structure
 * @v_idx: interrupt number
 * @t_idx: queue number
 **/
static void
iavf_map_vector_to_txq(struct iavf_adapter *adapter, int v_idx, int t_idx)
{
	struct iavf_q_vector *q_vector = &adapter->q_vectors[v_idx];
	struct iavf_ring *tx_ring = &adapter->tx_rings[t_idx];
	struct iavf_hw *hw = &adapter->hw;

	tx_ring->q_vector = q_vector;
	tx_ring->next = q_vector->tx.ring;
	tx_ring->vsi = &adapter->vsi;
	q_vector->tx.ring = tx_ring;
	q_vector->tx.count++;
	q_vector->tx.next_update = jiffies + 1;
	q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting);
	q_vector->num_ringpairs++;
	wr32(hw, IAVF_VFINT_ITRN1(IAVF_TX_ITR, q_vector->reg_idx),
	     q_vector->tx.target_itr >> 1);
	q_vector->tx.current_itr = q_vector->tx.target_itr;
}

/**
 * iavf_map_rings_to_vectors - Maps descriptor rings to vectors
 * @adapter: board private structure to initialize
 *
 * This function maps descriptor rings to the queue-specific vectors
 * we were allotted through the MSI-X enabling code.  Ideally, we'd have
 * one vector per ring/queue, but on a constrained vector budget, we
 * group the rings as "efficiently" as possible.  You would add new
 * mapping configurations in here.
 **/
static void iavf_map_rings_to_vectors(struct iavf_adapter *adapter)
{
	int rings_remaining = adapter->num_active_queues;
	int ridx = 0, vidx = 0;
	int q_vectors;

	q_vectors = adapter->num_msix_vectors - NONQ_VECS;

	for (; ridx < rings_remaining; ridx++) {
		iavf_map_vector_to_rxq(adapter, vidx, ridx);
		iavf_map_vector_to_txq(adapter, vidx, ridx);

		/* In the case where we have more queues than vectors, continue
		 * round-robin on vectors until all queues are mapped.
		 */
		if (++vidx >= q_vectors)
			vidx = 0;
	}

	adapter->aq_required |= IAVF_FLAG_AQ_MAP_VECTORS;
}

/**
 * iavf_irq_affinity_notify - Callback for affinity changes
 * @notify: context as to what irq was changed
 * @mask: the new affinity mask
 *
 * This is a callback function used by the irq_set_affinity_notifier function
 * so that we may register to receive changes to the irq affinity masks.
 **/
static void iavf_irq_affinity_notify(struct irq_affinity_notify *notify,
				     const cpumask_t *mask)
{
	struct iavf_q_vector *q_vector =
		container_of(notify, struct iavf_q_vector, affinity_notify);

	cpumask_copy(&q_vector->affinity_mask, mask);
}

/**
 * iavf_irq_affinity_release - Callback for affinity notifier release
 * @ref: internal core kernel usage
 *
 * This is a callback function used by the irq_set_affinity_notifier function
 * to inform the current notification subscriber that they will no longer
 * receive notifications.
 **/
static void iavf_irq_affinity_release(struct kref *ref) {}

/**
 * iavf_request_traffic_irqs - Initialize MSI-X interrupts
 * @adapter: board private structure
 * @basename: device basename
 *
 * Allocates MSI-X vectors for tx and rx handling, and requests
 * interrupts from the kernel.
 **/
static int
iavf_request_traffic_irqs(struct iavf_adapter *adapter, char *basename)
{
	unsigned int vector, q_vectors;
	unsigned int rx_int_idx = 0, tx_int_idx = 0;
	int irq_num, err;
	int cpu;

	iavf_irq_disable(adapter);
	/* Decrement for Other and TCP Timer vectors */
	q_vectors = adapter->num_msix_vectors - NONQ_VECS;

	for (vector = 0; vector < q_vectors; vector++) {
		struct iavf_q_vector *q_vector = &adapter->q_vectors[vector];

		irq_num = adapter->msix_entries[vector + NONQ_VECS].vector;

		if (q_vector->tx.ring && q_vector->rx.ring) {
			snprintf(q_vector->name, sizeof(q_vector->name),
				 "iavf-%s-TxRx-%u", basename, rx_int_idx++);
			tx_int_idx++;
		} else if (q_vector->rx.ring) {
			snprintf(q_vector->name, sizeof(q_vector->name),
				 "iavf-%s-rx-%u", basename, rx_int_idx++);
		} else if (q_vector->tx.ring) {
			snprintf(q_vector->name, sizeof(q_vector->name),
				 "iavf-%s-tx-%u", basename, tx_int_idx++);
		} else {
			/* skip this unused q_vector */
			continue;
		}
		err = request_irq(irq_num,
				  iavf_msix_clean_rings,
				  0,
				  q_vector->name,
				  q_vector);
		if (err) {
			dev_info(&adapter->pdev->dev,
				 "Request_irq failed, error: %d\n", err);
			goto free_queue_irqs;
		}
		/* register for affinity change notifications */
		q_vector->affinity_notify.notify = iavf_irq_affinity_notify;
		q_vector->affinity_notify.release =
						   iavf_irq_affinity_release;
		irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify);
		/* Spread the IRQ affinity hints across online CPUs. Note that
		 * get_cpu_mask returns a mask with a permanent lifetime so
		 * it's safe to use as a hint for irq_update_affinity_hint.
		 */
		cpu = cpumask_local_spread(q_vector->v_idx, -1);
		irq_update_affinity_hint(irq_num, get_cpu_mask(cpu));
	}

	return 0;

free_queue_irqs:
	while (vector) {
		vector--;
		irq_num = adapter->msix_entries[vector + NONQ_VECS].vector;
		irq_set_affinity_notifier(irq_num, NULL);
		irq_update_affinity_hint(irq_num, NULL);
		free_irq(irq_num, &adapter->q_vectors[vector]);
	}
	return err;
}

/**
 * iavf_request_misc_irq - Initialize MSI-X interrupts
 * @adapter: board private structure
 *
 * Allocates MSI-X vector 0 and requests interrupts from the kernel. This
 * vector is only for the admin queue, and stays active even when the netdev
 * is closed.
 **/
static int iavf_request_misc_irq(struct iavf_adapter *adapter)
{
	struct net_device *netdev = adapter->netdev;
	int err;

	snprintf(adapter->misc_vector_name,
		 sizeof(adapter->misc_vector_name) - 1, "iavf-%s:mbx",
		 dev_name(&adapter->pdev->dev));
	err = request_irq(adapter->msix_entries[0].vector,
			  &iavf_msix_aq, 0,
			  adapter->misc_vector_name, netdev);
	if (err) {
		dev_err(&adapter->pdev->dev,
			"request_irq for %s failed: %d\n",
			adapter->misc_vector_name, err);
		free_irq(adapter->msix_entries[0].vector, netdev);
	}
	return err;
}

/**
 * iavf_free_traffic_irqs - Free MSI-X interrupts
 * @adapter: board private structure
 *
 * Frees all MSI-X vectors other than 0.
 **/
static void iavf_free_traffic_irqs(struct iavf_adapter *adapter)
{
	int vector, irq_num, q_vectors;

	if (!adapter->msix_entries)
		return;

	q_vectors = adapter->num_msix_vectors - NONQ_VECS;

	for (vector = 0; vector < q_vectors; vector++) {
		irq_num = adapter->msix_entries[vector + NONQ_VECS].vector;
		irq_set_affinity_notifier(irq_num, NULL);
		irq_update_affinity_hint(irq_num, NULL);
		free_irq(irq_num, &adapter->q_vectors[vector]);
	}
}

/**
 * iavf_free_misc_irq - Free MSI-X miscellaneous vector
 * @adapter: board private structure
 *
 * Frees MSI-X vector 0.
 **/
static void iavf_free_misc_irq(struct iavf_adapter *adapter)
{
	struct net_device *netdev = adapter->netdev;

	if (!adapter->msix_entries)
		return;

	free_irq(adapter->msix_entries[0].vector, netdev);
}

/**
 * iavf_configure_tx - Configure Transmit Unit after Reset
 * @adapter: board private structure
 *
 * Configure the Tx unit of the MAC after a reset.
 **/
static void iavf_configure_tx(struct iavf_adapter *adapter)
{
	struct iavf_hw *hw = &adapter->hw;
	int i;

	for (i = 0; i < adapter->num_active_queues; i++)
		adapter->tx_rings[i].tail = hw->hw_addr + IAVF_QTX_TAIL1(i);
}

/**
 * iavf_configure_rx - Configure Receive Unit after Reset
 * @adapter: board private structure
 *
 * Configure the Rx unit of the MAC after a reset.
 **/
static void iavf_configure_rx(struct iavf_adapter *adapter)
{
	unsigned int rx_buf_len = IAVF_RXBUFFER_2048;
	struct iavf_hw *hw = &adapter->hw;
	int i;

	/* Legacy Rx will always default to a 2048 buffer size. */
#if (PAGE_SIZE < 8192)
	if (!(adapter->flags & IAVF_FLAG_LEGACY_RX)) {
		struct net_device *netdev = adapter->netdev;

		/* For jumbo frames on systems with 4K pages we have to use
		 * an order 1 page, so we might as well increase the size
		 * of our Rx buffer to make better use of the available space
		 */
		rx_buf_len = IAVF_RXBUFFER_3072;

		/* We use a 1536 buffer size for configurations with
		 * standard Ethernet mtu.  On x86 this gives us enough room
		 * for shared info and 192 bytes of padding.
		 */
		if (!IAVF_2K_TOO_SMALL_WITH_PADDING &&
		    (netdev->mtu <= ETH_DATA_LEN))
			rx_buf_len = IAVF_RXBUFFER_1536 - NET_IP_ALIGN;
	}
#endif

	for (i = 0; i < adapter->num_active_queues; i++) {
		adapter->rx_rings[i].tail = hw->hw_addr + IAVF_QRX_TAIL1(i);
		adapter->rx_rings[i].rx_buf_len = rx_buf_len;

		if (adapter->flags & IAVF_FLAG_LEGACY_RX)
			clear_ring_build_skb_enabled(&adapter->rx_rings[i]);
		else
			set_ring_build_skb_enabled(&adapter->rx_rings[i]);
	}
}

/**
 * iavf_find_vlan - Search filter list for specific vlan filter
 * @adapter: board private structure
 * @vlan: vlan tag
 *
 * Returns ptr to the filter object or NULL. Must be called while holding the
 * mac_vlan_list_lock.
 **/
static struct
iavf_vlan_filter *iavf_find_vlan(struct iavf_adapter *adapter,
				 struct iavf_vlan vlan)
{
	struct iavf_vlan_filter *f;

	list_for_each_entry(f, &adapter->vlan_filter_list, list) {
		if (f->vlan.vid == vlan.vid &&
		    f->vlan.tpid == vlan.tpid)
			return f;
	}

	return NULL;
}

/**
 * iavf_add_vlan - Add a vlan filter to the list
 * @adapter: board private structure
 * @vlan: VLAN tag
 *
 * Returns ptr to the filter object or NULL when no memory available.
 **/
static struct
iavf_vlan_filter *iavf_add_vlan(struct iavf_adapter *adapter,
				struct iavf_vlan vlan)
{
	struct iavf_vlan_filter *f = NULL;

	spin_lock_bh(&adapter->mac_vlan_list_lock);

	f = iavf_find_vlan(adapter, vlan);
	if (!f) {
		f = kzalloc(sizeof(*f), GFP_ATOMIC);
		if (!f)
			goto clearout;

		f->vlan = vlan;

		list_add_tail(&f->list, &adapter->vlan_filter_list);
		f->add = true;
		adapter->aq_required |= IAVF_FLAG_AQ_ADD_VLAN_FILTER;
	}

clearout:
	spin_unlock_bh(&adapter->mac_vlan_list_lock);
	return f;
}

/**
 * iavf_del_vlan - Remove a vlan filter from the list
 * @adapter: board private structure
 * @vlan: VLAN tag
 **/
static void iavf_del_vlan(struct iavf_adapter *adapter, struct iavf_vlan vlan)
{
	struct iavf_vlan_filter *f;

	spin_lock_bh(&adapter->mac_vlan_list_lock);

	f = iavf_find_vlan(adapter, vlan);
	if (f) {
		f->remove = true;
		adapter->aq_required |= IAVF_FLAG_AQ_DEL_VLAN_FILTER;
	}

	spin_unlock_bh(&adapter->mac_vlan_list_lock);
}

/**
 * iavf_restore_filters
 * @adapter: board private structure
 *
 * Restore existing non MAC filters when VF netdev comes back up
 **/
static void iavf_restore_filters(struct iavf_adapter *adapter)
{
	u16 vid;

	/* re-add all VLAN filters */
	for_each_set_bit(vid, adapter->vsi.active_cvlans, VLAN_N_VID)
		iavf_add_vlan(adapter, IAVF_VLAN(vid, ETH_P_8021Q));

	for_each_set_bit(vid, adapter->vsi.active_svlans, VLAN_N_VID)
		iavf_add_vlan(adapter, IAVF_VLAN(vid, ETH_P_8021AD));
}

/**
 * iavf_get_num_vlans_added - get number of VLANs added
 * @adapter: board private structure
 */
static u16 iavf_get_num_vlans_added(struct iavf_adapter *adapter)
{
	return bitmap_weight(adapter->vsi.active_cvlans, VLAN_N_VID) +
		bitmap_weight(adapter->vsi.active_svlans, VLAN_N_VID);
}

/**
 * iavf_get_max_vlans_allowed - get maximum VLANs allowed for this VF
 * @adapter: board private structure
 *
 * This depends on the negotiated VLAN capability. For VIRTCHNL_VF_OFFLOAD_VLAN,
 * do not impose a limit as that maintains current behavior and for
 * VIRTCHNL_VF_OFFLOAD_VLAN_V2, use the maximum allowed sent from the PF.
 **/
static u16 iavf_get_max_vlans_allowed(struct iavf_adapter *adapter)
{
	/* don't impose any limit for VIRTCHNL_VF_OFFLOAD_VLAN since there has
	 * never been a limit on the VF driver side
	 */
	if (VLAN_ALLOWED(adapter))
		return VLAN_N_VID;
	else if (VLAN_V2_ALLOWED(adapter))
		return adapter->vlan_v2_caps.filtering.max_filters;

	return 0;
}

/**
 * iavf_max_vlans_added - check if maximum VLANs allowed already exist
 * @adapter: board private structure
 **/
static bool iavf_max_vlans_added(struct iavf_adapter *adapter)
{
	if (iavf_get_num_vlans_added(adapter) <
	    iavf_get_max_vlans_allowed(adapter))
		return false;

	return true;
}

/**
 * iavf_vlan_rx_add_vid - Add a VLAN filter to a device
 * @netdev: network device struct
 * @proto: unused protocol data
 * @vid: VLAN tag
 **/
static int iavf_vlan_rx_add_vid(struct net_device *netdev,
				__always_unused __be16 proto, u16 vid)
{
	struct iavf_adapter *adapter = netdev_priv(netdev);

	if (!VLAN_FILTERING_ALLOWED(adapter))
		return -EIO;

	if (iavf_max_vlans_added(adapter)) {
		netdev_err(netdev, "Max allowed VLAN filters %u. Remove existing VLANs or disable filtering via Ethtool if supported.\n",
			   iavf_get_max_vlans_allowed(adapter));
		return -EIO;
	}

	if (!iavf_add_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto))))
		return -ENOMEM;

	if (proto == cpu_to_be16(ETH_P_8021Q))
		set_bit(vid, adapter->vsi.active_cvlans);
	else
		set_bit(vid, adapter->vsi.active_svlans);

	return 0;
}

/**
 * iavf_vlan_rx_kill_vid - Remove a VLAN filter from a device
 * @netdev: network device struct
 * @proto: unused protocol data
 * @vid: VLAN tag
 **/
static int iavf_vlan_rx_kill_vid(struct net_device *netdev,
				 __always_unused __be16 proto, u16 vid)
{
	struct iavf_adapter *adapter = netdev_priv(netdev);

	iavf_del_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto)));
	if (proto == cpu_to_be16(ETH_P_8021Q))
		clear_bit(vid, adapter->vsi.active_cvlans);
	else
		clear_bit(vid, adapter->vsi.active_svlans);

	return 0;
}

/**
 * iavf_find_filter - Search filter list for specific mac filter
 * @adapter: board private structure
 * @macaddr: the MAC address
 *
 * Returns ptr to the filter object or NULL. Must be called while holding the
 * mac_vlan_list_lock.
 **/
static struct
iavf_mac_filter *iavf_find_filter(struct iavf_adapter *adapter,
				  const u8 *macaddr)
{
	struct iavf_mac_filter *f;

	if (!macaddr)
		return NULL;

	list_for_each_entry(f, &adapter->mac_filter_list, list) {
		if (ether_addr_equal(macaddr, f->macaddr))
			return f;
	}
	return NULL;
}

/**
 * iavf_add_filter - Add a mac filter to the filter list
 * @adapter: board private structure
 * @macaddr: the MAC address
 *
 * Returns ptr to the filter object or NULL when no memory available.
 **/
struct iavf_mac_filter *iavf_add_filter(struct iavf_adapter *adapter,
					const u8 *macaddr)
{
	struct iavf_mac_filter *f;

	if (!macaddr)
		return NULL;

	f = iavf_find_filter(adapter, macaddr);
	if (!f) {
		f = kzalloc(sizeof(*f), GFP_ATOMIC);
		if (!f)
			return f;

		ether_addr_copy(f->macaddr, macaddr);

		list_add_tail(&f->list, &adapter->mac_filter_list);
		f->add = true;
		f->is_new_mac = true;
		f->is_primary = false;
		adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER;
	} else {
		f->remove = false;
	}

	return f;
}

/**
 * iavf_set_mac - NDO callback to set port mac address
 * @netdev: network interface device structure
 * @p: pointer to an address structure
 *
 * Returns 0 on success, negative on failure
 **/
static int iavf_set_mac(struct net_device *netdev, void *p)
{
	struct iavf_adapter *adapter = netdev_priv(netdev);
	struct iavf_hw *hw = &adapter->hw;
	struct iavf_mac_filter *f;
	struct sockaddr *addr = p;

	if (!is_valid_ether_addr(addr->sa_data))
		return -EADDRNOTAVAIL;

	if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
		return 0;

	spin_lock_bh(&adapter->mac_vlan_list_lock);

	f = iavf_find_filter(adapter, hw->mac.addr);
	if (f) {
		f->remove = true;
		f->is_primary = true;
		adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER;
	}

	f = iavf_add_filter(adapter, addr->sa_data);
	if (f) {
		f->is_primary = true;
		ether_addr_copy(hw->mac.addr, addr->sa_data);
	}

	spin_unlock_bh(&adapter->mac_vlan_list_lock);

	/* schedule the watchdog task to immediately process the request */
	if (f)
		queue_work(iavf_wq, &adapter->watchdog_task.work);

	return (f == NULL) ? -ENOMEM : 0;
}

/**
 * iavf_addr_sync - Callback for dev_(mc|uc)_sync to add address
 * @netdev: the netdevice
 * @addr: address to add
 *
 * Called by __dev_(mc|uc)_sync when an address needs to be added. We call
 * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
 */
static int iavf_addr_sync(struct net_device *netdev, const u8 *addr)
{
	struct iavf_adapter *adapter = netdev_priv(netdev);

	if (iavf_add_filter(adapter, addr))
		return 0;
	else
		return -ENOMEM;
}

/**
 * iavf_addr_unsync - Callback for dev_(mc|uc)_sync to remove address
 * @netdev: the netdevice
 * @addr: address to add
 *
 * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call
 * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
 */
static int iavf_addr_unsync(struct net_device *netdev, const u8 *addr)
{
	struct iavf_adapter *adapter = netdev_priv(netdev);
	struct iavf_mac_filter *f;

	/* Under some circumstances, we might receive a request to delete
	 * our own device address from our uc list. Because we store the
	 * device address in the VSI's MAC/VLAN filter list, we need to ignore
	 * such requests and not delete our device address from this list.
	 */
	if (ether_addr_equal(addr, netdev->dev_addr))
		return 0;

	f = iavf_find_filter(adapter, addr);
	if (f) {
		f->remove = true;
		adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER;
	}
	return 0;
}

/**
 * iavf_set_rx_mode - NDO callback to set the netdev filters
 * @netdev: network interface device structure
 **/
static void iavf_set_rx_mode(struct net_device *netdev)
{
	struct iavf_adapter *adapter = netdev_priv(netdev);

	spin_lock_bh(&adapter->mac_vlan_list_lock);
	__dev_uc_sync(netdev, iavf_addr_sync, iavf_addr_unsync);
	__dev_mc_sync(netdev, iavf_addr_sync, iavf_addr_unsync);
	spin_unlock_bh(&adapter->mac_vlan_list_lock);

	if (netdev->flags & IFF_PROMISC &&
	    !(adapter->flags & IAVF_FLAG_PROMISC_ON))
		adapter->aq_required |= IAVF_FLAG_AQ_REQUEST_PROMISC;
	else if (!(netdev->flags & IFF_PROMISC) &&
		 adapter->flags & IAVF_FLAG_PROMISC_ON)
		adapter->aq_required |= IAVF_FLAG_AQ_RELEASE_PROMISC;

	if (netdev->flags & IFF_ALLMULTI &&
	    !(adapter->flags & IAVF_FLAG_ALLMULTI_ON))
		adapter->aq_required |= IAVF_FLAG_AQ_REQUEST_ALLMULTI;
	else if (!(netdev->flags & IFF_ALLMULTI) &&
		 adapter->flags & IAVF_FLAG_ALLMULTI_ON)
		adapter->aq_required |= IAVF_FLAG_AQ_RELEASE_ALLMULTI;
}

/**
 * iavf_napi_enable_all - enable NAPI on all queue vectors
 * @adapter: board private structure
 **/
static void iavf_napi_enable_all(struct iavf_adapter *adapter)
{
	int q_idx;
	struct iavf_q_vector *q_vector;
	int q_vectors = adapter->num_msix_vectors - NONQ_VECS;

	for (q_idx = 0; q_idx < q_vectors; q_idx++) {
		struct napi_struct *napi;

		q_vector = &adapter->q_vectors[q_idx];
		napi = &q_vector->napi;
		napi_enable(napi);
	}
}

/**
 * iavf_napi_disable_all - disable NAPI on all queue vectors
 * @adapter: board private structure
 **/
static void iavf_napi_disable_all(struct iavf_adapter *adapter)
{
	int q_idx;
	struct iavf_q_vector *q_vector;
	int q_vectors = adapter->num_msix_vectors - NONQ_VECS;

	for (q_idx = 0; q_idx < q_vectors; q_idx++) {
		q_vector = &adapter->q_vectors[q_idx];
		napi_disable(&q_vector->napi);
	}
}

/**
 * iavf_configure - set up transmit and receive data structures
 * @adapter: board private structure
 **/
static void iavf_configure(struct iavf_adapter *adapter)
{
	struct net_device *netdev = adapter->netdev;
	int i;

	iavf_set_rx_mode(netdev);

	iavf_configure_tx(adapter);
	iavf_configure_rx(adapter);
	adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES;

	for (i = 0; i < adapter->num_active_queues; i++) {
		struct iavf_ring *ring = &adapter->rx_rings[i];

		iavf_alloc_rx_buffers(ring, IAVF_DESC_UNUSED(ring));
	}
}

/**
 * iavf_up_complete - Finish the last steps of bringing up a connection
 * @adapter: board private structure
 *
 * Expects to be called while holding the __IAVF_IN_CRITICAL_TASK bit lock.
 **/
static void iavf_up_complete(struct iavf_adapter *adapter)
{
	iavf_change_state(adapter, __IAVF_RUNNING);
	clear_bit(__IAVF_VSI_DOWN, adapter->vsi.state);

	iavf_napi_enable_all(adapter);

	adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_QUEUES;
	if (CLIENT_ENABLED(adapter))
		adapter->flags |= IAVF_FLAG_CLIENT_NEEDS_OPEN;
	mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
}

/**
 * iavf_down - Shutdown the connection processing
 * @adapter: board private structure
 *
 * Expects to be called while holding the __IAVF_IN_CRITICAL_TASK bit lock.
 **/
void iavf_down(struct iavf_adapter *adapter)
{
	struct net_device *netdev = adapter->netdev;
	struct iavf_vlan_filter *vlf;
	struct iavf_cloud_filter *cf;
	struct iavf_fdir_fltr *fdir;
	struct iavf_mac_filter *f;
	struct iavf_adv_rss *rss;

	if (adapter->state <= __IAVF_DOWN_PENDING)
		return;

	netif_carrier_off(netdev);
	netif_tx_disable(netdev);
	adapter->link_up = false;
	iavf_napi_disable_all(adapter);
	iavf_irq_disable(adapter);

	spin_lock_bh(&adapter->mac_vlan_list_lock);

	/* clear the sync flag on all filters */
	__dev_uc_unsync(adapter->netdev, NULL);
	__dev_mc_unsync(adapter->netdev, NULL);

	/* remove all MAC filters */
	list_for_each_entry(f, &adapter->mac_filter_list, list) {
		f->remove = true;
	}

	/* remove all VLAN filters */
	list_for_each_entry(vlf, &adapter->vlan_filter_list, list) {
		vlf->remove = true;
	}

	spin_unlock_bh(&adapter->mac_vlan_list_lock);

	/* remove all cloud filters */
	spin_lock_bh(&adapter->cloud_filter_list_lock);
	list_for_each_entry(cf, &adapter->cloud_filter_list, list) {
		cf->del = true;
	}
	spin_unlock_bh(&adapter->cloud_filter_list_lock);

	/* remove all Flow Director filters */
	spin_lock_bh(&adapter->fdir_fltr_lock);
	list_for_each_entry(fdir, &adapter->fdir_list_head, list) {
		fdir->state = IAVF_FDIR_FLTR_DEL_REQUEST;
	}
	spin_unlock_bh(&adapter->fdir_fltr_lock);

	/* remove all advance RSS configuration */
	spin_lock_bh(&adapter->adv_rss_lock);
	list_for_each_entry(rss, &adapter->adv_rss_list_head, list)
		rss->state = IAVF_ADV_RSS_DEL_REQUEST;
	spin_unlock_bh(&adapter->adv_rss_lock);

	if (!(adapter->flags & IAVF_FLAG_PF_COMMS_FAILED)) {
		/* cancel any current operation */
		adapter->current_op = VIRTCHNL_OP_UNKNOWN;
		/* Schedule operations to close down the HW. Don't wait
		 * here for this to complete. The watchdog is still running
		 * and it will take care of this.
		 */
		adapter->aq_required = IAVF_FLAG_AQ_DEL_MAC_FILTER;
		adapter->aq_required |= IAVF_FLAG_AQ_DEL_VLAN_FILTER;
		adapter->aq_required |= IAVF_FLAG_AQ_DEL_CLOUD_FILTER;
		adapter->aq_required |= IAVF_FLAG_AQ_DEL_FDIR_FILTER;
		adapter->aq_required |= IAVF_FLAG_AQ_DEL_ADV_RSS_CFG;
		adapter->aq_required |= IAVF_FLAG_AQ_DISABLE_QUEUES;
	}

	mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
}

/**
 * iavf_acquire_msix_vectors - Setup the MSIX capability
 * @adapter: board private structure
 * @vectors: number of vectors to request
 *
 * Work with the OS to set up the MSIX vectors needed.
 *
 * Returns 0 on success, negative on failure
 **/
static int
iavf_acquire_msix_vectors(struct iavf_adapter *adapter, int vectors)
{
	int err, vector_threshold;

	/* We'll want at least 3 (vector_threshold):
	 * 0) Other (Admin Queue and link, mostly)
	 * 1) TxQ[0] Cleanup
	 * 2) RxQ[0] Cleanup
	 */
	vector_threshold = MIN_MSIX_COUNT;

	/* The more we get, the more we will assign to Tx/Rx Cleanup
	 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
	 * Right now, we simply care about how many we'll get; we'll
	 * set them up later while requesting irq's.
	 */
	err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
				    vector_threshold, vectors);
	if (err < 0) {
		dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts\n");
		kfree(adapter->msix_entries);
		adapter->msix_entries = NULL;
		return err;
	}

	/* Adjust for only the vectors we'll use, which is minimum
	 * of max_msix_q_vectors + NONQ_VECS, or the number of
	 * vectors we were allocated.
	 */
	adapter->num_msix_vectors = err;
	return 0;
}

/**
 * iavf_free_queues - Free memory for all rings
 * @adapter: board private structure to initialize
 *
 * Free all of the memory associated with queue pairs.
 **/
static void iavf_free_queues(struct iavf_adapter *adapter)
{
	if (!adapter->vsi_res)
		return;
	adapter->num_active_queues = 0;
	kfree(adapter->tx_rings);
	adapter->tx_rings = NULL;
	kfree(adapter->rx_rings);
	adapter->rx_rings = NULL;
}

/**
 * iavf_set_queue_vlan_tag_loc - set location for VLAN tag offload
 * @adapter: board private structure
 *
 * Based on negotiated capabilities, the VLAN tag needs to be inserted and/or
 * stripped in certain descriptor fields. Instead of checking the offload
 * capability bits in the hot path, cache the location the ring specific
 * flags.
 */
void iavf_set_queue_vlan_tag_loc(struct iavf_adapter *adapter)
{
	int i;

	for (i = 0; i < adapter->num_active_queues; i++) {
		struct iavf_ring *tx_ring = &adapter->tx_rings[i];
		struct iavf_ring *rx_ring = &adapter->rx_rings[i];

		/* prevent multiple L2TAG bits being set after VFR */
		tx_ring->flags &=
			~(IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 |
			  IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2);
		rx_ring->flags &=
			~(IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 |
			  IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2);

		if (VLAN_ALLOWED(adapter)) {
			tx_ring->flags |= IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1;
			rx_ring->flags |= IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1;
		} else if (VLAN_V2_ALLOWED(adapter)) {
			struct virtchnl_vlan_supported_caps *stripping_support;
			struct virtchnl_vlan_supported_caps *insertion_support;

			stripping_support =
				&adapter->vlan_v2_caps.offloads.stripping_support;
			insertion_support =
				&adapter->vlan_v2_caps.offloads.insertion_support;

			if (stripping_support->outer) {
				if (stripping_support->outer &
				    VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1)
					rx_ring->flags |=
						IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1;
				else if (stripping_support->outer &
					 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2_2)
					rx_ring->flags |=
						IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2;
			} else if (stripping_support->inner) {
				if (stripping_support->inner &
				    VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1)
					rx_ring->flags |=
						IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1;
				else if (stripping_support->inner &
					 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2_2)
					rx_ring->flags |=
						IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2;
			}

			if (insertion_support->outer) {
				if (insertion_support->outer &
				    VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1)
					tx_ring->flags |=
						IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1;
				else if (insertion_support->outer &
					 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2)
					tx_ring->flags |=
						IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2;
			} else if (insertion_support->inner) {
				if (insertion_support->inner &
				    VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1)
					tx_ring->flags |=
						IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1;
				else if (insertion_support->inner &
					 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2)
					tx_ring->flags |=
						IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2;
			}
		}
	}
}

/**
 * iavf_alloc_queues - Allocate memory for all rings
 * @adapter: board private structure to initialize
 *
 * We allocate one ring per queue at run-time since we don't know the
 * number of queues at compile-time.  The polling_netdev array is
 * intended for Multiqueue, but should work fine with a single queue.
 **/
static int iavf_alloc_queues(struct iavf_adapter *adapter)
{
	int i, num_active_queues;

	/* If we're in reset reallocating queues we don't actually know yet for
	 * certain the PF gave us the number of queues we asked for but we'll
	 * assume it did.  Once basic reset is finished we'll confirm once we
	 * start negotiating config with PF.
	 */
	if (adapter->num_req_queues)
		num_active_queues = adapter->num_req_queues;
	else if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) &&
		 adapter->num_tc)
		num_active_queues = adapter->ch_config.total_qps;
	else
		num_active_queues = min_t(int,
					  adapter->vsi_res->num_queue_pairs,
					  (int)(num_online_cpus()));


	adapter->tx_rings = kcalloc(num_active_queues,
				    sizeof(struct iavf_ring), GFP_KERNEL);
	if (!adapter->tx_rings)
		goto err_out;
	adapter->rx_rings = kcalloc(num_active_queues,
				    sizeof(struct iavf_ring), GFP_KERNEL);
	if (!adapter->rx_rings)
		goto err_out;

	for (i = 0; i < num_active_queues; i++) {
		struct iavf_ring *tx_ring;
		struct iavf_ring *rx_ring;

		tx_ring = &adapter->tx_rings[i];

		tx_ring->queue_index = i;
		tx_ring->netdev = adapter->netdev;
		tx_ring->dev = &adapter->pdev->dev;
		tx_ring->count = adapter->tx_desc_count;
		tx_ring->itr_setting = IAVF_ITR_TX_DEF;
		if (adapter->flags & IAVF_FLAG_WB_ON_ITR_CAPABLE)
			tx_ring->flags |= IAVF_TXR_FLAGS_WB_ON_ITR;

		rx_ring = &adapter->rx_rings[i];
		rx_ring->queue_index = i;
		rx_ring->netdev = adapter->netdev;
		rx_ring->dev = &adapter->pdev->dev;
		rx_ring->count = adapter->rx_desc_count;
		rx_ring->itr_setting = IAVF_ITR_RX_DEF;
	}

	adapter->num_active_queues = num_active_queues;

	iavf_set_queue_vlan_tag_loc(adapter);

	return 0;

err_out:
	iavf_free_queues(adapter);
	return -ENOMEM;
}

/**
 * iavf_set_interrupt_capability - set MSI-X or FAIL if not supported
 * @adapter: board private structure to initialize
 *
 * Attempt to configure the interrupts using the best available
 * capabilities of the hardware and the kernel.
 **/
static int iavf_set_interrupt_capability(struct iavf_adapter *adapter)
{
	int vector, v_budget;
	int pairs = 0;
	int err = 0;

	if (!adapter->vsi_res) {
		err = -EIO;
		goto out;
	}
	pairs = adapter->num_active_queues;

	/* It's easy to be greedy for MSI-X vectors, but it really doesn't do
	 * us much good if we have more vectors than CPUs. However, we already
	 * limit the total number of queues by the number of CPUs so we do not
	 * need any further limiting here.
	 */
	v_budget = min_t(int, pairs + NONQ_VECS,
			 (int)adapter->vf_res->max_vectors);

	adapter->msix_entries = kcalloc(v_budget,
					sizeof(struct msix_entry), GFP_KERNEL);
	if (!adapter->msix_entries) {
		err = -ENOMEM;
		goto out;
	}

	for (vector = 0; vector < v_budget; vector++)
		adapter->msix_entries[vector].entry = vector;

	err = iavf_acquire_msix_vectors(adapter, v_budget);

out:
	netif_set_real_num_rx_queues(adapter->netdev, pairs);
	netif_set_real_num_tx_queues(adapter->netdev, pairs);
	return err;
}

/**
 * iavf_config_rss_aq - Configure RSS keys and lut by using AQ commands
 * @adapter: board private structure
 *
 * Return 0 on success, negative on failure
 **/
static int iavf_config_rss_aq(struct iavf_adapter *adapter)
{
	struct iavf_aqc_get_set_rss_key_data *rss_key =
		(struct iavf_aqc_get_set_rss_key_data *)adapter->rss_key;
	struct iavf_hw *hw = &adapter->hw;
	enum iavf_status status;

	if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
		/* bail because we already have a command pending */
		dev_err(&adapter->pdev->dev, "Cannot configure RSS, command %d pending\n",
			adapter->current_op);
		return -EBUSY;
	}

	status = iavf_aq_set_rss_key(hw, adapter->vsi.id, rss_key);
	if (status) {
		dev_err(&adapter->pdev->dev, "Cannot set RSS key, err %s aq_err %s\n",
			iavf_stat_str(hw, status),
			iavf_aq_str(hw, hw->aq.asq_last_status));
		return iavf_status_to_errno(status);

	}

	status = iavf_aq_set_rss_lut(hw, adapter->vsi.id, false,
				     adapter->rss_lut, adapter->rss_lut_size);
	if (status) {
		dev_err(&adapter->pdev->dev, "Cannot set RSS lut, err %s aq_err %s\n",
			iavf_stat_str(hw, status),
			iavf_aq_str(hw, hw->aq.asq_last_status));
		return iavf_status_to_errno(status);
	}

	return 0;

}

/**
 * iavf_config_rss_reg - Configure RSS keys and lut by writing registers
 * @adapter: board private structure
 *
 * Returns 0 on success, negative on failure
 **/
static int iavf_config_rss_reg(struct iavf_adapter *adapter)
{
	struct iavf_hw *hw = &adapter->hw;
	u32 *dw;
	u16 i;

	dw = (u32 *)adapter->rss_key;
	for (i = 0; i <= adapter->rss_key_size / 4; i++)
		wr32(hw, IAVF_VFQF_HKEY(i), dw[i]);

	dw = (u32 *)adapter->rss_lut;
	for (i = 0; i <= adapter->rss_lut_size / 4; i++)
		wr32(hw, IAVF_VFQF_HLUT(i), dw[i]);

	iavf_flush(hw);

	return 0;
}

/**
 * iavf_config_rss - Configure RSS keys and lut
 * @adapter: board private structure
 *
 * Returns 0 on success, negative on failure
 **/
int iavf_config_rss(struct iavf_adapter *adapter)
{

	if (RSS_PF(adapter)) {
		adapter->aq_required |= IAVF_FLAG_AQ_SET_RSS_LUT |
					IAVF_FLAG_AQ_SET_RSS_KEY;
		return 0;
	} else if (RSS_AQ(adapter)) {
		return iavf_config_rss_aq(adapter);
	} else {
		return iavf_config_rss_reg(adapter);
	}
}

/**
 * iavf_fill_rss_lut - Fill the lut with default values
 * @adapter: board private structure
 **/
static void iavf_fill_rss_lut(struct iavf_adapter *adapter)
{
	u16 i;

	for (i = 0; i < adapter->rss_lut_size; i++)
		adapter->rss_lut[i] = i % adapter->num_active_queues;
}

/**
 * iavf_init_rss - Prepare for RSS
 * @adapter: board private structure
 *
 * Return 0 on success, negative on failure
 **/
static int iavf_init_rss(struct iavf_adapter *adapter)
{
	struct iavf_hw *hw = &adapter->hw;

	if (!RSS_PF(adapter)) {
		/* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */
		if (adapter->vf_res->vf_cap_flags &
		    VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
			adapter->hena = IAVF_DEFAULT_RSS_HENA_EXPANDED;
		else
			adapter->hena = IAVF_DEFAULT_RSS_HENA;

		wr32(hw, IAVF_VFQF_HENA(0), (u32)adapter->hena);
		wr32(hw, IAVF_VFQF_HENA(1), (u32)(adapter->hena >> 32));
	}

	iavf_fill_rss_lut(adapter);
	netdev_rss_key_fill((void *)adapter->rss_key, adapter->rss_key_size);

	return iavf_config_rss(adapter);
}

/**
 * iavf_alloc_q_vectors - Allocate memory for interrupt vectors
 * @adapter: board private structure to initialize
 *
 * We allocate one q_vector per queue interrupt.  If allocation fails we
 * return -ENOMEM.
 **/
static int iavf_alloc_q_vectors(struct iavf_adapter *adapter)
{
	int q_idx = 0, num_q_vectors;
	struct iavf_q_vector *q_vector;

	num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
	adapter->q_vectors = kcalloc(num_q_vectors, sizeof(*q_vector),
				     GFP_KERNEL);
	if (!adapter->q_vectors)
		return -ENOMEM;

	for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
		q_vector = &adapter->q_vectors[q_idx];
		q_vector->adapter = adapter;
		q_vector->vsi = &adapter->vsi;
		q_vector->v_idx = q_idx;
		q_vector->reg_idx = q_idx;
		cpumask_copy(&q_vector->affinity_mask, cpu_possible_mask);
		netif_napi_add(adapter->netdev, &q_vector->napi,
			       iavf_napi_poll, NAPI_POLL_WEIGHT);
	}

	return 0;
}

/**
 * iavf_free_q_vectors - Free memory allocated for interrupt vectors
 * @adapter: board private structure to initialize
 *
 * This function frees the memory allocated to the q_vectors.  In addition if
 * NAPI is enabled it will delete any references to the NAPI struct prior
 * to freeing the q_vector.
 **/
static void iavf_free_q_vectors(struct iavf_adapter *adapter)
{
	int q_idx, num_q_vectors;
	int napi_vectors;

	if (!adapter->q_vectors)
		return;

	num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
	napi_vectors = adapter->num_active_queues;

	for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
		struct iavf_q_vector *q_vector = &adapter->q_vectors[q_idx];

		if (q_idx < napi_vectors)
			netif_napi_del(&q_vector->napi);
	}
	kfree(adapter->q_vectors);
	adapter->q_vectors = NULL;
}

/**
 * iavf_reset_interrupt_capability - Reset MSIX setup
 * @adapter: board private structure
 *
 **/
void iavf_reset_interrupt_capability(struct iavf_adapter *adapter)
{
	if (!adapter->msix_entries)
		return;

	pci_disable_msix(adapter->pdev);
	kfree(adapter->msix_entries);
	adapter->msix_entries = NULL;
}

/**
 * iavf_init_interrupt_scheme - Determine if MSIX is supported and init
 * @adapter: board private structure to initialize
 *
 **/
int iavf_init_interrupt_scheme(struct iavf_adapter *adapter)
{
	int err;

	err = iavf_alloc_queues(adapter);
	if (err) {
		dev_err(&adapter->pdev->dev,
			"Unable to allocate memory for queues\n");
		goto err_alloc_queues;
	}

	rtnl_lock();
	err = iavf_set_interrupt_capability(adapter);
	rtnl_unlock();
	if (err) {
		dev_err(&adapter->pdev->dev,
			"Unable to setup interrupt capabilities\n");
		goto err_set_interrupt;
	}

	err = iavf_alloc_q_vectors(adapter);
	if (err) {
		dev_err(&adapter->pdev->dev,
			"Unable to allocate memory for queue vectors\n");
		goto err_alloc_q_vectors;
	}

	/* If we've made it so far while ADq flag being ON, then we haven't
	 * bailed out anywhere in middle. And ADq isn't just enabled but actual
	 * resources have been allocated in the reset path.
	 * Now we can truly claim that ADq is enabled.
	 */
	if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) &&
	    adapter->num_tc)
		dev_info(&adapter->pdev->dev, "ADq Enabled, %u TCs created",
			 adapter->num_tc);

	dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u",
		 (adapter->num_active_queues > 1) ? "Enabled" : "Disabled",
		 adapter->num_active_queues);

	return 0;
err_alloc_q_vectors:
	iavf_reset_interrupt_capability(adapter);
err_set_interrupt:
	iavf_free_queues(adapter);
err_alloc_queues:
	return err;
}

/**
 * iavf_free_rss - Free memory used by RSS structs
 * @adapter: board private structure
 **/
static void iavf_free_rss(struct iavf_adapter *adapter)
{
	kfree(adapter->rss_key);
	adapter->rss_key = NULL;

	kfree(adapter->rss_lut);
	adapter->rss_lut = NULL;
}

/**
 * iavf_reinit_interrupt_scheme - Reallocate queues and vectors
 * @adapter: board private structure
 *
 * Returns 0 on success, negative on failure
 **/
static int iavf_reinit_interrupt_scheme(struct iavf_adapter *adapter)
{
	struct net_device *netdev = adapter->netdev;
	int err;

	if (netif_running(netdev))
		iavf_free_traffic_irqs(adapter);
	iavf_free_misc_irq(adapter);
	iavf_reset_interrupt_capability(adapter);
	iavf_free_q_vectors(adapter);
	iavf_free_queues(adapter);

	err =  iavf_init_interrupt_scheme(adapter);
	if (err)
		goto err;

	netif_tx_stop_all_queues(netdev);

	err = iavf_request_misc_irq(adapter);
	if (err)
		goto err;

	set_bit(__IAVF_VSI_DOWN, adapter->vsi.state);

	iavf_map_rings_to_vectors(adapter);
err:
	return err;
}

/**
 * iavf_process_aq_command - process aq_required flags
 * and sends aq command
 * @adapter: pointer to iavf adapter structure
 *
 * Returns 0 on success
 * Returns error code if no command was sent
 * or error code if the command failed.
 **/
static int iavf_process_aq_command(struct iavf_adapter *adapter)
{
	if (adapter->aq_required & IAVF_FLAG_AQ_GET_CONFIG)
		return iavf_send_vf_config_msg(adapter);
	if (adapter->aq_required & IAVF_FLAG_AQ_GET_OFFLOAD_VLAN_V2_CAPS)
		return iavf_send_vf_offload_vlan_v2_msg(adapter);
	if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_QUEUES) {
		iavf_disable_queues(adapter);
		return 0;
	}

	if (adapter->aq_required & IAVF_FLAG_AQ_MAP_VECTORS) {
		iavf_map_queues(adapter);
		return 0;
	}

	if (adapter->aq_required & IAVF_FLAG_AQ_ADD_MAC_FILTER) {
		iavf_add_ether_addrs(adapter);
		return 0;
	}

	if (adapter->aq_required & IAVF_FLAG_AQ_ADD_VLAN_FILTER) {
		iavf_add_vlans(adapter);
		return 0;
	}

	if (adapter->aq_required & IAVF_FLAG_AQ_DEL_MAC_FILTER) {
		iavf_del_ether_addrs(adapter);
		return 0;
	}

	if (adapter->aq_required & IAVF_FLAG_AQ_DEL_VLAN_FILTER) {
		iavf_del_vlans(adapter);
		return 0;
	}

	if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING) {
		iavf_enable_vlan_stripping(adapter);
		return 0;
	}

	if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING) {
		iavf_disable_vlan_stripping(adapter);
		return 0;
	}

	if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_QUEUES) {
		iavf_configure_queues(adapter);
		return 0;
	}

	if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_QUEUES) {
		iavf_enable_queues(adapter);
		return 0;
	}

	if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_RSS) {
		/* This message goes straight to the firmware, not the
		 * PF, so we don't have to set current_op as we will
		 * not get a response through the ARQ.
		 */
		adapter->aq_required &= ~IAVF_FLAG_AQ_CONFIGURE_RSS;
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_GET_HENA) {
		iavf_get_hena(adapter);
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_SET_HENA) {
		iavf_set_hena(adapter);
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_KEY) {
		iavf_set_rss_key(adapter);
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_LUT) {
		iavf_set_rss_lut(adapter);
		return 0;
	}

	if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_PROMISC) {
		iavf_set_promiscuous(adapter, FLAG_VF_UNICAST_PROMISC |
				       FLAG_VF_MULTICAST_PROMISC);
		return 0;
	}

	if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_ALLMULTI) {
		iavf_set_promiscuous(adapter, FLAG_VF_MULTICAST_PROMISC);
		return 0;
	}
	if ((adapter->aq_required & IAVF_FLAG_AQ_RELEASE_PROMISC) ||
	    (adapter->aq_required & IAVF_FLAG_AQ_RELEASE_ALLMULTI)) {
		iavf_set_promiscuous(adapter, 0);
		return 0;
	}

	if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CHANNELS) {
		iavf_enable_channels(adapter);
		return 0;
	}

	if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CHANNELS) {
		iavf_disable_channels(adapter);
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_ADD_CLOUD_FILTER) {
		iavf_add_cloud_filter(adapter);
		return 0;
	}

	if (adapter->aq_required & IAVF_FLAG_AQ_DEL_CLOUD_FILTER) {
		iavf_del_cloud_filter(adapter);
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_DEL_CLOUD_FILTER) {
		iavf_del_cloud_filter(adapter);
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_ADD_CLOUD_FILTER) {
		iavf_add_cloud_filter(adapter);
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_ADD_FDIR_FILTER) {
		iavf_add_fdir_filter(adapter);
		return IAVF_SUCCESS;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_DEL_FDIR_FILTER) {
		iavf_del_fdir_filter(adapter);
		return IAVF_SUCCESS;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_ADD_ADV_RSS_CFG) {
		iavf_add_adv_rss_cfg(adapter);
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_DEL_ADV_RSS_CFG) {
		iavf_del_adv_rss_cfg(adapter);
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING) {
		iavf_disable_vlan_stripping_v2(adapter, ETH_P_8021Q);
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING) {
		iavf_disable_vlan_stripping_v2(adapter, ETH_P_8021AD);
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING) {
		iavf_enable_vlan_stripping_v2(adapter, ETH_P_8021Q);
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING) {
		iavf_enable_vlan_stripping_v2(adapter, ETH_P_8021AD);
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION) {
		iavf_disable_vlan_insertion_v2(adapter, ETH_P_8021Q);
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_STAG_VLAN_INSERTION) {
		iavf_disable_vlan_insertion_v2(adapter, ETH_P_8021AD);
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION) {
		iavf_enable_vlan_insertion_v2(adapter, ETH_P_8021Q);
		return 0;
	}
	if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_STAG_VLAN_INSERTION) {
		iavf_enable_vlan_insertion_v2(adapter, ETH_P_8021AD);
		return 0;
	}

	if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_STATS) {
		iavf_request_stats(adapter);
		return 0;
	}

	return -EAGAIN;
}

/**
 * iavf_set_vlan_offload_features - set VLAN offload configuration
 * @adapter: board private structure
 * @prev_features: previous features used for comparison
 * @features: updated features used for configuration
 *
 * Set the aq_required bit(s) based on the requested features passed in to
 * configure VLAN stripping and/or VLAN insertion if supported. Also, schedule
 * the watchdog if any changes are requested to expedite the request via
 * virtchnl.
 **/
void
iavf_set_vlan_offload_features(struct iavf_adapter *adapter,
			       netdev_features_t prev_features,
			       netdev_features_t features)
{
	bool enable_stripping = true, enable_insertion = true;
	u16 vlan_ethertype = 0;
	u64 aq_required = 0;

	/* keep cases separate because one ethertype for offloads can be
	 * disabled at the same time as another is disabled, so check for an
	 * enabled ethertype first, then check for disabled. Default to
	 * ETH_P_8021Q so an ethertype is specified if disabling insertion and
	 * stripping.
	 */
	if (features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX))
		vlan_ethertype = ETH_P_8021AD;
	else if (features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX))
		vlan_ethertype = ETH_P_8021Q;
	else if (prev_features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX))
		vlan_ethertype = ETH_P_8021AD;
	else if (prev_features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX))
		vlan_ethertype = ETH_P_8021Q;
	else
		vlan_ethertype = ETH_P_8021Q;

	if (!(features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_CTAG_RX)))
		enable_stripping = false;
	if (!(features & (NETIF_F_HW_VLAN_STAG_TX | NETIF_F_HW_VLAN_CTAG_TX)))
		enable_insertion = false;

	if (VLAN_ALLOWED(adapter)) {
		/* VIRTCHNL_VF_OFFLOAD_VLAN only has support for toggling VLAN
		 * stripping via virtchnl. VLAN insertion can be toggled on the
		 * netdev, but it doesn't require a virtchnl message
		 */
		if (enable_stripping)
			aq_required |= IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING;
		else
			aq_required |= IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING;

	} else if (VLAN_V2_ALLOWED(adapter)) {
		switch (vlan_ethertype) {
		case ETH_P_8021Q:
			if (enable_stripping)
				aq_required |= IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING;
			else
				aq_required |= IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING;

			if (enable_insertion)
				aq_required |= IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION;
			else
				aq_required |= IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION;
			break;
		case ETH_P_8021AD:
			if (enable_stripping)
				aq_required |= IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING;
			else
				aq_required |= IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING;

			if (enable_insertion)
				aq_required |= IAVF_FLAG_AQ_ENABLE_STAG_VLAN_INSERTION;
			else
				aq_required |= IAVF_FLAG_AQ_DISABLE_STAG_VLAN_INSERTION;
			break;
		}
	}

	if (aq_required) {
		adapter->aq_required |= aq_required;
		mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
	}
}

/**
 * iavf_startup - first step of driver startup
 * @adapter: board private structure
 *
 * Function process __IAVF_STARTUP driver state.
 * When success the state is changed to __IAVF_INIT_VERSION_CHECK
 * when fails the state is changed to __IAVF_INIT_FAILED
 **/
static void iavf_startup(struct iavf_adapter *adapter)
{
	struct pci_dev *pdev = adapter->pdev;
	struct iavf_hw *hw = &adapter->hw;
	enum iavf_status status;
	int ret;

	WARN_ON(adapter->state != __IAVF_STARTUP);

	/* driver loaded, probe complete */
	adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED;
	adapter->flags &= ~IAVF_FLAG_RESET_PENDING;
	status = iavf_set_mac_type(hw);
	if (status) {
		dev_err(&pdev->dev, "Failed to set MAC type (%d)\n", status);
		goto err;
	}

	ret = iavf_check_reset_complete(hw);
	if (ret) {
		dev_info(&pdev->dev, "Device is still in reset (%d), retrying\n",
			 ret);
		goto err;
	}
	hw->aq.num_arq_entries = IAVF_AQ_LEN;
	hw->aq.num_asq_entries = IAVF_AQ_LEN;
	hw->aq.arq_buf_size = IAVF_MAX_AQ_BUF_SIZE;
	hw->aq.asq_buf_size = IAVF_MAX_AQ_BUF_SIZE;

	status = iavf_init_adminq(hw);
	if (status) {
		dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n",
			status);
		goto err;
	}
	ret = iavf_send_api_ver(adapter);
	if (ret) {
		dev_err(&pdev->dev, "Unable to send to PF (%d)\n", ret);
		iavf_shutdown_adminq(hw);
		goto err;
	}
	iavf_change_state(adapter, __IAVF_INIT_VERSION_CHECK);
	return;
err:
	iavf_change_state(adapter, __IAVF_INIT_FAILED);
}

/**
 * iavf_init_version_check - second step of driver startup
 * @adapter: board private structure
 *
 * Function process __IAVF_INIT_VERSION_CHECK driver state.
 * When success the state is changed to __IAVF_INIT_GET_RESOURCES
 * when fails the state is changed to __IAVF_INIT_FAILED
 **/
static void iavf_init_version_check(struct iavf_adapter *adapter)
{
	struct pci_dev *pdev = adapter->pdev;
	struct iavf_hw *hw = &adapter->hw;
	int err = -EAGAIN;

	WARN_ON(adapter->state != __IAVF_INIT_VERSION_CHECK);

	if (!iavf_asq_done(hw)) {
		dev_err(&pdev->dev, "Admin queue command never completed\n");
		iavf_shutdown_adminq(hw);
		iavf_change_state(adapter, __IAVF_STARTUP);
		goto err;
	}

	/* aq msg sent, awaiting reply */
	err = iavf_verify_api_ver(adapter);
	if (err) {
		if (err == -EALREADY)
			err = iavf_send_api_ver(adapter);
		else
			dev_err(&pdev->dev, "Unsupported PF API version %d.%d, expected %d.%d\n",
				adapter->pf_version.major,
				adapter->pf_version.minor,
				VIRTCHNL_VERSION_MAJOR,
				VIRTCHNL_VERSION_MINOR);
		goto err;
	}
	err = iavf_send_vf_config_msg(adapter);
	if (err) {
		dev_err(&pdev->dev, "Unable to send config request (%d)\n",
			err);
		goto err;
	}
	iavf_change_state(adapter, __IAVF_INIT_GET_RESOURCES);
	return;
err:
	iavf_change_state(adapter, __IAVF_INIT_FAILED);
}

/**
 * iavf_parse_vf_resource_msg - parse response from VIRTCHNL_OP_GET_VF_RESOURCES
 * @adapter: board private structure
 */
int iavf_parse_vf_resource_msg(struct iavf_adapter *adapter)
{
	int i, num_req_queues = adapter->num_req_queues;
	struct iavf_vsi *vsi = &adapter->vsi;

	for (i = 0; i < adapter->vf_res->num_vsis; i++) {
		if (adapter->vf_res->vsi_res[i].vsi_type == VIRTCHNL_VSI_SRIOV)
			adapter->vsi_res = &adapter->vf_res->vsi_res[i];
	}
	if (!adapter->vsi_res) {
		dev_err(&adapter->pdev->dev, "No LAN VSI found\n");
		return -ENODEV;
	}

	if (num_req_queues &&
	    num_req_queues > adapter->vsi_res->num_queue_pairs) {
		/* Problem.  The PF gave us fewer queues than what we had
		 * negotiated in our request.  Need a reset to see if we can't
		 * get back to a working state.
		 */
		dev_err(&adapter->pdev->dev,
			"Requested %d queues, but PF only gave us %d.\n",
			num_req_queues,
			adapter->vsi_res->num_queue_pairs);
		adapter->flags |= IAVF_FLAG_REINIT_ITR_NEEDED;
		adapter->num_req_queues = adapter->vsi_res->num_queue_pairs;
		iavf_schedule_reset(adapter);

		return -EAGAIN;
	}
	adapter->num_req_queues = 0;
	adapter->vsi.id = adapter->vsi_res->vsi_id;

	adapter->vsi.back = adapter;
	adapter->vsi.base_vector = 1;
	adapter->vsi.work_limit = IAVF_DEFAULT_IRQ_WORK;
	vsi->netdev = adapter->netdev;
	vsi->qs_handle = adapter->vsi_res->qset_handle;
	if (adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
		adapter->rss_key_size = adapter->vf_res->rss_key_size;
		adapter->rss_lut_size = adapter->vf_res->rss_lut_size;
	} else {
		adapter->rss_key_size = IAVF_HKEY_ARRAY_SIZE;
		adapter->rss_lut_size = IAVF_HLUT_ARRAY_SIZE;
	}

	return 0;
}

/**
 * iavf_init_get_resources - third step of driver startup
 * @adapter: board private structure
 *
 * Function process __IAVF_INIT_GET_RESOURCES driver state and
 * finishes driver initialization procedure.
 * When success the state is changed to __IAVF_DOWN
 * when fails the state is changed to __IAVF_INIT_FAILED
 **/
static void iavf_init_get_resources(struct iavf_adapter *adapter)
{
	struct pci_dev *pdev = adapter->pdev;
	struct iavf_hw *hw = &adapter->hw;
	int err;

	WARN_ON(adapter->state != __IAVF_INIT_GET_RESOURCES);
	/* aq msg sent, awaiting reply */
	if (!adapter->vf_res) {
		adapter->vf_res = kzalloc(IAVF_VIRTCHNL_VF_RESOURCE_SIZE,
					  GFP_KERNEL);
		if (!adapter->vf_res) {
			err = -ENOMEM;
			goto err;
		}
	}
	err = iavf_get_vf_config(adapter);
	if (err == -EALREADY) {
		err = iavf_send_vf_config_msg(adapter);
		goto err_alloc;
	} else if (err == -EINVAL) {
		/* We only get -EINVAL if the device is in a very bad
		 * state or if we've been disabled for previous bad
		 * behavior. Either way, we're done now.
		 */
		iavf_shutdown_adminq(hw);
		dev_err(&pdev->dev, "Unable to get VF config due to PF error condition, not retrying\n");
		return;
	}
	if (err) {
		dev_err(&pdev->dev, "Unable to get VF config (%d)\n", err);
		goto err_alloc;
	}

	err = iavf_parse_vf_resource_msg(adapter);
	if (err) {
		dev_err(&pdev->dev, "Failed to parse VF resource message from PF (%d)\n",
			err);
		goto err_alloc;
	}
	/* Some features require additional messages to negotiate extended
	 * capabilities. These are processed in sequence by the
	 * __IAVF_INIT_EXTENDED_CAPS driver state.
	 */
	adapter->extended_caps = IAVF_EXTENDED_CAPS;

	iavf_change_state(adapter, __IAVF_INIT_EXTENDED_CAPS);
	return;

err_alloc:
	kfree(adapter->vf_res);
	adapter->vf_res = NULL;
err:
	iavf_change_state(adapter, __IAVF_INIT_FAILED);
}

/**
 * iavf_init_send_offload_vlan_v2_caps - part of initializing VLAN V2 caps
 * @adapter: board private structure
 *
 * Function processes send of the extended VLAN V2 capability message to the
 * PF. Must clear IAVF_EXTENDED_CAP_RECV_VLAN_V2 if the message is not sent,
 * e.g. due to PF not negotiating VIRTCHNL_VF_OFFLOAD_VLAN_V2.
 */
static void iavf_init_send_offload_vlan_v2_caps(struct iavf_adapter *adapter)
{
	int ret;

	WARN_ON(!(adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_VLAN_V2));

	ret = iavf_send_vf_offload_vlan_v2_msg(adapter);
	if (ret && ret == -EOPNOTSUPP) {
		/* PF does not support VIRTCHNL_VF_OFFLOAD_V2. In this case,
		 * we did not send the capability exchange message and do not
		 * expect a response.
		 */
		adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_VLAN_V2;
	}

	/* We sent the message, so move on to the next step */
	adapter->extended_caps &= ~IAVF_EXTENDED_CAP_SEND_VLAN_V2;
}

/**
 * iavf_init_recv_offload_vlan_v2_caps - part of initializing VLAN V2 caps
 * @adapter: board private structure
 *
 * Function processes receipt of the extended VLAN V2 capability message from
 * the PF.
 **/
static void iavf_init_recv_offload_vlan_v2_caps(struct iavf_adapter *adapter)
{
	int ret;

	WARN_ON(!(adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_VLAN_V2));

	memset(&adapter->vlan_v2_caps, 0, sizeof(adapter->vlan_v2_caps));

	ret = iavf_get_vf_vlan_v2_caps(adapter);
	if (ret)
		goto err;

	/* We've processed receipt of the VLAN V2 caps message */
	adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_VLAN_V2;
	return;
err:
	/* We didn't receive a reply. Make sure we try sending again when
	 * __IAVF_INIT_FAILED attempts to recover.
	 */
	adapter->extended_caps |= IAVF_EXTENDED_CAP_SEND_VLAN_V2;
	iavf_change_state(adapter, __IAVF_INIT_FAILED);
}

/**
 * iavf_init_process_extended_caps - Part of driver startup
 * @adapter: board private structure
 *
 * Function processes __IAVF_INIT_EXTENDED_CAPS driver state. This state
 * handles negotiating capabilities for features which require an additional
 * message.
 *
 * Once all extended capabilities exchanges are finished, the driver will
 * transition into __IAVF_INIT_CONFIG_ADAPTER.
 */
static void iavf_init_process_extended_caps(struct iavf_adapter *adapter)
{
	WARN_ON(adapter->state != __IAVF_INIT_EXTENDED_CAPS);

	/* Process capability exchange for VLAN V2 */
	if (adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_VLAN_V2) {
		iavf_init_send_offload_vlan_v2_caps(adapter);
		return;
	} else if (adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_VLAN_V2) {
		iavf_init_recv_offload_vlan_v2_caps(adapter);
		return;
	}

	/* When we reach here, no further extended capabilities exchanges are
	 * necessary, so we finally transition into __IAVF_INIT_CONFIG_ADAPTER
	 */
	iavf_change_state(adapter, __IAVF_INIT_CONFIG_ADAPTER);
}

/**
 * iavf_init_config_adapter - last part of driver startup
 * @adapter: board private structure
 *
 * After all the supported capabilities are negotiated, then the
 * __IAVF_INIT_CONFIG_ADAPTER state will finish driver initialization.
 */
static void iavf_init_config_adapter(struct iavf_adapter *adapter)
{
	struct net_device *netdev = adapter->netdev;
	struct pci_dev *pdev = adapter->pdev;
	int err;

	WARN_ON(adapter->state != __IAVF_INIT_CONFIG_ADAPTER);

	if (iavf_process_config(adapter))
		goto err;

	adapter->current_op = VIRTCHNL_OP_UNKNOWN;

	adapter->flags |= IAVF_FLAG_RX_CSUM_ENABLED;

	netdev->netdev_ops = &iavf_netdev_ops;
	iavf_set_ethtool_ops(netdev);
	netdev->watchdog_timeo = 5 * HZ;

	/* MTU range: 68 - 9710 */
	netdev->min_mtu = ETH_MIN_MTU;
	netdev->max_mtu = IAVF_MAX_RXBUFFER - IAVF_PACKET_HDR_PAD;

	if (!is_valid_ether_addr(adapter->hw.mac.addr)) {
		dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n",
			 adapter->hw.mac.addr);
		eth_hw_addr_random(netdev);
		ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr);
	} else {
		eth_hw_addr_set(netdev, adapter->hw.mac.addr);
		ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr);
	}

	adapter->tx_desc_count = IAVF_DEFAULT_TXD;
	adapter->rx_desc_count = IAVF_DEFAULT_RXD;
	err = iavf_init_interrupt_scheme(adapter);
	if (err)
		goto err_sw_init;
	iavf_map_rings_to_vectors(adapter);
	if (adapter->vf_res->vf_cap_flags &
		VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
		adapter->flags |= IAVF_FLAG_WB_ON_ITR_CAPABLE;

	err = iavf_request_misc_irq(adapter);
	if (err)
		goto err_sw_init;

	netif_carrier_off(netdev);
	adapter->link_up = false;

	/* set the semaphore to prevent any callbacks after device registration
	 * up to time when state of driver will be set to __IAVF_DOWN
	 */
	rtnl_lock();
	if (!adapter->netdev_registered) {
		err = register_netdevice(netdev);
		if (err) {
			rtnl_unlock();
			goto err_register;
		}
	}

	adapter->netdev_registered = true;

	netif_tx_stop_all_queues(netdev);
	if (CLIENT_ALLOWED(adapter)) {
		err = iavf_lan_add_device(adapter);
		if (err)
			dev_info(&pdev->dev, "Failed to add VF to client API service list: %d\n",
				 err);
	}
	dev_info(&pdev->dev, "MAC address: %pM\n", adapter->hw.mac.addr);
	if (netdev->features & NETIF_F_GRO)
		dev_info(&pdev->dev, "GRO is enabled\n");

	iavf_change_state(adapter, __IAVF_DOWN);
	set_bit(__IAVF_VSI_DOWN, adapter->vsi.state);
	rtnl_unlock();

	iavf_misc_irq_enable(adapter);
	wake_up(&adapter->down_waitqueue);

	adapter->rss_key = kzalloc(adapter->rss_key_size, GFP_KERNEL);
	adapter->rss_lut = kzalloc(adapter->rss_lut_size, GFP_KERNEL);
	if (!adapter->rss_key || !adapter->rss_lut) {
		err = -ENOMEM;
		goto err_mem;
	}
	if (RSS_AQ(adapter))
		adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_RSS;
	else
		iavf_init_rss(adapter);

	if (VLAN_V2_ALLOWED(adapter))
		/* request initial VLAN offload settings */
		iavf_set_vlan_offload_features(adapter, 0, netdev->features);

	return;
err_mem:
	iavf_free_rss(adapter);
err_register:
	iavf_free_misc_irq(adapter);
err_sw_init:
	iavf_reset_interrupt_capability(adapter);
err:
	iavf_change_state(adapter, __IAVF_INIT_FAILED);
}

/**
 * iavf_watchdog_task - Periodic call-back task
 * @work: pointer to work_struct
 **/
static void iavf_watchdog_task(struct work_struct *work)
{
	struct iavf_adapter *adapter = container_of(work,
						    struct iavf_adapter,
						    watchdog_task.work);
	struct iavf_hw *hw = &adapter->hw;
	u32 reg_val;

	if (!mutex_trylock(&adapter->crit_lock)) {
		if (adapter->state == __IAVF_REMOVE)
			return;

		goto restart_watchdog;
	}

	if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED)
		iavf_change_state(adapter, __IAVF_COMM_FAILED);

	if (adapter->flags & IAVF_FLAG_RESET_NEEDED) {
		adapter->aq_required = 0;
		adapter->current_op = VIRTCHNL_OP_UNKNOWN;
		mutex_unlock(&adapter->crit_lock);
		queue_work(iavf_wq, &adapter->reset_task);
		return;
	}

	switch (adapter->state) {
	case __IAVF_STARTUP:
		iavf_startup(adapter);
		mutex_unlock(&adapter->crit_lock);
		queue_delayed_work(iavf_wq, &adapter->watchdog_task,
				   msecs_to_jiffies(30));
		return;
	case __IAVF_INIT_VERSION_CHECK:
		iavf_init_version_check(adapter);
		mutex_unlock(&adapter->crit_lock);
		queue_delayed_work(iavf_wq, &adapter->watchdog_task,
				   msecs_to_jiffies(30));
		return;
	case __IAVF_INIT_GET_RESOURCES:
		iavf_init_get_resources(adapter);
		mutex_unlock(&adapter->crit_lock);
		queue_delayed_work(iavf_wq, &adapter->watchdog_task,
				   msecs_to_jiffies(1));
		return;
	case __IAVF_INIT_EXTENDED_CAPS:
		iavf_init_process_extended_caps(adapter);
		mutex_unlock(&adapter->crit_lock);
		queue_delayed_work(iavf_wq, &adapter->watchdog_task,
				   msecs_to_jiffies(1));
		return;
	case __IAVF_INIT_CONFIG_ADAPTER:
		iavf_init_config_adapter(adapter);
		mutex_unlock(&adapter->crit_lock);
		queue_delayed_work(iavf_wq, &adapter->watchdog_task,
				   msecs_to_jiffies(1));
		return;
	case __IAVF_INIT_FAILED:
		if (test_bit(__IAVF_IN_REMOVE_TASK,
			     &adapter->crit_section)) {
			/* Do not update the state and do not reschedule
			 * watchdog task, iavf_remove should handle this state
			 * as it can loop forever
			 */
			mutex_unlock(&adapter->crit_lock);
			return;
		}
		if (++adapter->aq_wait_count > IAVF_AQ_MAX_ERR) {
			dev_err(&adapter->pdev->dev,
				"Failed to communicate with PF; waiting before retry\n");
			adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED;
			iavf_shutdown_adminq(hw);
			mutex_unlock(&adapter->crit_lock);
			queue_delayed_work(iavf_wq,
					   &adapter->watchdog_task, (5 * HZ));
			return;
		}
		/* Try again from failed step*/
		iavf_change_state(adapter, adapter->last_state);
		mutex_unlock(&adapter->crit_lock);
		queue_delayed_work(iavf_wq, &adapter->watchdog_task, HZ);
		return;
	case __IAVF_COMM_FAILED:
		if (test_bit(__IAVF_IN_REMOVE_TASK,
			     &adapter->crit_section)) {
			/* Set state to __IAVF_INIT_FAILED and perform remove
			 * steps. Remove IAVF_FLAG_PF_COMMS_FAILED so the task
			 * doesn't bring the state back to __IAVF_COMM_FAILED.
			 */
			iavf_change_state(adapter, __IAVF_INIT_FAILED);
			adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED;
			mutex_unlock(&adapter->crit_lock);
			return;
		}
		reg_val = rd32(hw, IAVF_VFGEN_RSTAT) &
			  IAVF_VFGEN_RSTAT_VFR_STATE_MASK;
		if (reg_val == VIRTCHNL_VFR_VFACTIVE ||
		    reg_val == VIRTCHNL_VFR_COMPLETED) {
			/* A chance for redemption! */
			dev_err(&adapter->pdev->dev,
				"Hardware came out of reset. Attempting reinit.\n");
			/* When init task contacts the PF and
			 * gets everything set up again, it'll restart the
			 * watchdog for us. Down, boy. Sit. Stay. Woof.
			 */
			iavf_change_state(adapter, __IAVF_STARTUP);
			adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED;
		}
		adapter->aq_required = 0;
		adapter->current_op = VIRTCHNL_OP_UNKNOWN;
		mutex_unlock(&adapter->crit_lock);
		queue_delayed_work(iavf_wq,
				   &adapter->watchdog_task,
				   msecs_to_jiffies(10));
		return;
	case __IAVF_RESETTING:
		mutex_unlock(&adapter->crit_lock);
		queue_delayed_work(iavf_wq, &adapter->watchdog_task, HZ * 2);
		return;
	case __IAVF_DOWN:
	case __IAVF_DOWN_PENDING:
	case __IAVF_TESTING:
	case __IAVF_RUNNING:
		if (adapter->current_op) {
			if (!iavf_asq_done(hw)) {
				dev_dbg(&adapter->pdev->dev,
					"Admin queue timeout\n");
				iavf_send_api_ver(adapter);
			}
		} else {
			int ret = iavf_process_aq_command(adapter);

			/* An error will be returned if no commands were
			 * processed; use this opportunity to update stats
			 * if the error isn't -ENOTSUPP
			 */
			if (ret && ret != -EOPNOTSUPP &&
			    adapter->state == __IAVF_RUNNING)
				iavf_request_stats(adapter);
		}
		if (adapter->state == __IAVF_RUNNING)
			iavf_detect_recover_hung(&adapter->vsi);
		break;
	case __IAVF_REMOVE:
	default:
		mutex_unlock(&adapter->crit_lock);
		return;
	}

	/* check for hw reset */
	reg_val = rd32(hw, IAVF_VF_ARQLEN1) & IAVF_VF_ARQLEN1_ARQENABLE_MASK;
	if (!reg_val) {
		adapter->flags |= IAVF_FLAG_RESET_PENDING;
		adapter->aq_required = 0;
		adapter->current_op = VIRTCHNL_OP_UNKNOWN;
		dev_err(&adapter->pdev->dev, "Hardware reset detected\n");
		queue_work(iavf_wq, &adapter->reset_task);
		mutex_unlock(&adapter->crit_lock);
		queue_delayed_work(iavf_wq,
				   &adapter->watchdog_task, HZ * 2);
		return;
	}

	schedule_delayed_work(&adapter->client_task, msecs_to_jiffies(5));
	mutex_unlock(&adapter->crit_lock);
restart_watchdog:
	if (adapter->state >= __IAVF_DOWN)
		queue_work(iavf_wq, &adapter->adminq_task);
	if (adapter->aq_required)
		queue_delayed_work(iavf_wq, &adapter->watchdog_task,
				   msecs_to_jiffies(20));
	else
		queue_delayed_work(iavf_wq, &adapter->watchdog_task, HZ * 2);
}

static void iavf_disable_vf(struct iavf_adapter *adapter)
{
	struct iavf_mac_filter *f, *ftmp;
	struct iavf_vlan_filter *fv, *fvtmp;
	struct iavf_cloud_filter *cf, *cftmp;

	adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED;

	/* We don't use netif_running() because it may be true prior to
	 * ndo_open() returning, so we can't assume it means all our open
	 * tasks have finished, since we're not holding the rtnl_lock here.
	 */
	if (adapter->state == __IAVF_RUNNING) {
		set_bit(__IAVF_VSI_DOWN, adapter->vsi.state);
		netif_carrier_off(adapter->netdev);
		netif_tx_disable(adapter->netdev);
		adapter->link_up = false;
		iavf_napi_disable_all(adapter);
		iavf_irq_disable(adapter);
		iavf_free_traffic_irqs(adapter);
		iavf_free_all_tx_resources(adapter);
		iavf_free_all_rx_resources(adapter);
	}

	spin_lock_bh(&adapter->mac_vlan_list_lock);

	/* Delete all of the filters */
	list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
		list_del(&f->list);
		kfree(f);
	}

	list_for_each_entry_safe(fv, fvtmp, &adapter->vlan_filter_list, list) {
		list_del(&fv->list);
		kfree(fv);
	}

	spin_unlock_bh(&adapter->mac_vlan_list_lock);

	spin_lock_bh(&adapter->cloud_filter_list_lock);
	list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, list) {
		list_del(&cf->list);
		kfree(cf);
		adapter->num_cloud_filters--;
	}
	spin_unlock_bh(&adapter->cloud_filter_list_lock);

	iavf_free_misc_irq(adapter);
	iavf_reset_interrupt_capability(adapter);
	iavf_free_q_vectors(adapter);
	iavf_free_queues(adapter);
	memset(adapter->vf_res, 0, IAVF_VIRTCHNL_VF_RESOURCE_SIZE);
	iavf_shutdown_adminq(&adapter->hw);
	adapter->netdev->flags &= ~IFF_UP;
	mutex_unlock(&adapter->crit_lock);
	adapter->flags &= ~IAVF_FLAG_RESET_PENDING;
	iavf_change_state(adapter, __IAVF_DOWN);
	wake_up(&adapter->down_waitqueue);
	dev_info(&adapter->pdev->dev, "Reset task did not complete, VF disabled\n");
}

/**
 * iavf_reset_task - Call-back task to handle hardware reset
 * @work: pointer to work_struct
 *
 * During reset we need to shut down and reinitialize the admin queue
 * before we can use it to communicate with the PF again. We also clear
 * and reinit the rings because that context is lost as well.
 **/
static void iavf_reset_task(struct work_struct *work)
{
	struct iavf_adapter *adapter = container_of(work,
						      struct iavf_adapter,
						      reset_task);
	struct virtchnl_vf_resource *vfres = adapter->vf_res;
	struct net_device *netdev = adapter->netdev;
	struct iavf_hw *hw = &adapter->hw;
	struct iavf_mac_filter *f, *ftmp;
	struct iavf_cloud_filter *cf;
	enum iavf_status status;
	u32 reg_val;
	int i = 0, err;
	bool running;

	/* When device is being removed it doesn't make sense to run the reset
	 * task, just return in such a case.
	 */
	if (!mutex_trylock(&adapter->crit_lock)) {
		if (adapter->state != __IAVF_REMOVE)
			queue_work(iavf_wq, &adapter->reset_task);

		return;
	}

	while (!mutex_trylock(&adapter->client_lock))
		usleep_range(500, 1000);
	if (CLIENT_ENABLED(adapter)) {
		adapter->flags &= ~(IAVF_FLAG_CLIENT_NEEDS_OPEN |
				    IAVF_FLAG_CLIENT_NEEDS_CLOSE |
				    IAVF_FLAG_CLIENT_NEEDS_L2_PARAMS |
				    IAVF_FLAG_SERVICE_CLIENT_REQUESTED);
		cancel_delayed_work_sync(&adapter->client_task);
		iavf_notify_client_close(&adapter->vsi, true);
	}
	iavf_misc_irq_disable(adapter);
	if (adapter->flags & IAVF_FLAG_RESET_NEEDED) {
		adapter->flags &= ~IAVF_FLAG_RESET_NEEDED;
		/* Restart the AQ here. If we have been reset but didn't
		 * detect it, or if the PF had to reinit, our AQ will be hosed.
		 */
		iavf_shutdown_adminq(hw);
		iavf_init_adminq(hw);
		iavf_request_reset(adapter);
	}
	adapter->flags |= IAVF_FLAG_RESET_PENDING;

	/* poll until we see the reset actually happen */
	for (i = 0; i < IAVF_RESET_WAIT_DETECTED_COUNT; i++) {
		reg_val = rd32(hw, IAVF_VF_ARQLEN1) &
			  IAVF_VF_ARQLEN1_ARQENABLE_MASK;
		if (!reg_val)
			break;
		usleep_range(5000, 10000);
	}
	if (i == IAVF_RESET_WAIT_DETECTED_COUNT) {
		dev_info(&adapter->pdev->dev, "Never saw reset\n");
		goto continue_reset; /* act like the reset happened */
	}

	/* wait until the reset is complete and the PF is responding to us */
	for (i = 0; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) {
		/* sleep first to make sure a minimum wait time is met */
		msleep(IAVF_RESET_WAIT_MS);

		reg_val = rd32(hw, IAVF_VFGEN_RSTAT) &
			  IAVF_VFGEN_RSTAT_VFR_STATE_MASK;
		if (reg_val == VIRTCHNL_VFR_VFACTIVE)
			break;
	}

	pci_set_master(adapter->pdev);
	pci_restore_msi_state(adapter->pdev);

	if (i == IAVF_RESET_WAIT_COMPLETE_COUNT) {
		dev_err(&adapter->pdev->dev, "Reset never finished (%x)\n",
			reg_val);
		iavf_disable_vf(adapter);
		mutex_unlock(&adapter->client_lock);
		mutex_unlock(&adapter->crit_lock);
		return; /* Do not attempt to reinit. It's dead, Jim. */
	}

continue_reset:
	/* We don't use netif_running() because it may be true prior to
	 * ndo_open() returning, so we can't assume it means all our open
	 * tasks have finished, since we're not holding the rtnl_lock here.
	 */
	running = adapter->state == __IAVF_RUNNING;

	if (running) {
		netdev->flags &= ~IFF_UP;
		netif_carrier_off(netdev);
		netif_tx_stop_all_queues(netdev);
		adapter->link_up = false;
		iavf_napi_disable_all(adapter);
	}
	iavf_irq_disable(adapter);

	iavf_change_state(adapter, __IAVF_RESETTING);
	adapter->flags &= ~IAVF_FLAG_RESET_PENDING;

	/* free the Tx/Rx rings and descriptors, might be better to just
	 * re-use them sometime in the future
	 */
	iavf_free_all_rx_resources(adapter);
	iavf_free_all_tx_resources(adapter);

	adapter->flags |= IAVF_FLAG_QUEUES_DISABLED;
	/* kill and reinit the admin queue */
	iavf_shutdown_adminq(hw);
	adapter->current_op = VIRTCHNL_OP_UNKNOWN;
	status = iavf_init_adminq(hw);
	if (status) {
		dev_info(&adapter->pdev->dev, "Failed to init adminq: %d\n",
			 status);
		goto reset_err;
	}
	adapter->aq_required = 0;

	if (adapter->flags & IAVF_FLAG_REINIT_ITR_NEEDED) {
		err = iavf_reinit_interrupt_scheme(adapter);
		if (err)
			goto reset_err;
	}

	if (RSS_AQ(adapter)) {
		adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_RSS;
	} else {
		err = iavf_init_rss(adapter);
		if (err)
			goto reset_err;
	}

	adapter->aq_required |= IAVF_FLAG_AQ_GET_CONFIG;
	/* always set since VIRTCHNL_OP_GET_VF_RESOURCES has not been
	 * sent/received yet, so VLAN_V2_ALLOWED() cannot is not reliable here,
	 * however the VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS won't be sent until
	 * VIRTCHNL_OP_GET_VF_RESOURCES and VIRTCHNL_VF_OFFLOAD_VLAN_V2 have
	 * been successfully sent and negotiated
	 */
	adapter->aq_required |= IAVF_FLAG_AQ_GET_OFFLOAD_VLAN_V2_CAPS;
	adapter->aq_required |= IAVF_FLAG_AQ_MAP_VECTORS;

	spin_lock_bh(&adapter->mac_vlan_list_lock);

	/* Delete filter for the current MAC address, it could have
	 * been changed by the PF via administratively set MAC.
	 * Will be re-added via VIRTCHNL_OP_GET_VF_RESOURCES.
	 */
	list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
		if (ether_addr_equal(f->macaddr, adapter->hw.mac.addr)) {
			list_del(&f->list);
			kfree(f);
		}
	}
	/* re-add all MAC filters */
	list_for_each_entry(f, &adapter->mac_filter_list, list) {
		f->add = true;
	}
	spin_unlock_bh(&adapter->mac_vlan_list_lock);

	/* check if TCs are running and re-add all cloud filters */
	spin_lock_bh(&adapter->cloud_filter_list_lock);
	if ((vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) &&
	    adapter->num_tc) {
		list_for_each_entry(cf, &adapter->cloud_filter_list, list) {
			cf->add = true;
		}
	}
	spin_unlock_bh(&adapter->cloud_filter_list_lock);

	adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER;
	adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER;
	iavf_misc_irq_enable(adapter);

	mod_delayed_work(iavf_wq, &adapter->watchdog_task, 2);

	/* We were running when the reset started, so we need to restore some
	 * state here.
	 */
	if (running) {
		/* allocate transmit descriptors */
		err = iavf_setup_all_tx_resources(adapter);
		if (err)
			goto reset_err;

		/* allocate receive descriptors */
		err = iavf_setup_all_rx_resources(adapter);
		if (err)
			goto reset_err;

		if (adapter->flags & IAVF_FLAG_REINIT_ITR_NEEDED) {
			err = iavf_request_traffic_irqs(adapter, netdev->name);
			if (err)
				goto reset_err;

			adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED;
		}

		iavf_configure(adapter);

		/* iavf_up_complete() will switch device back
		 * to __IAVF_RUNNING
		 */
		iavf_up_complete(adapter);
		netdev->flags |= IFF_UP;
		iavf_irq_enable(adapter, true);
	} else {
		iavf_change_state(adapter, __IAVF_DOWN);
		wake_up(&adapter->down_waitqueue);
	}
	mutex_unlock(&adapter->client_lock);
	mutex_unlock(&adapter->crit_lock);

	return;
reset_err:
	mutex_unlock(&adapter->client_lock);
	mutex_unlock(&adapter->crit_lock);
	if (running) {
		iavf_change_state(adapter, __IAVF_RUNNING);
		netdev->flags |= IFF_UP;
	}
	dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n");
	iavf_close(netdev);
}

/**
 * iavf_adminq_task - worker thread to clean the admin queue
 * @work: pointer to work_struct containing our data
 **/
static void iavf_adminq_task(struct work_struct *work)
{
	struct iavf_adapter *adapter =
		container_of(work, struct iavf_adapter, adminq_task);
	struct iavf_hw *hw = &adapter->hw;
	struct iavf_arq_event_info event;
	enum virtchnl_ops v_op;
	enum iavf_status ret, v_ret;
	u32 val, oldval;
	u16 pending;

	if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED)
		goto out;

	if (!mutex_trylock(&adapter->crit_lock)) {
		if (adapter->state == __IAVF_REMOVE)
			return;

		queue_work(iavf_wq, &adapter->adminq_task);
		goto out;
	}

	event.buf_len = IAVF_MAX_AQ_BUF_SIZE;
	event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
	if (!event.msg_buf)
		goto out;

	do {
		ret = iavf_clean_arq_element(hw, &event, &pending);
		v_op = (enum virtchnl_ops)le32_to_cpu(event.desc.cookie_high);
		v_ret = (enum iavf_status)le32_to_cpu(event.desc.cookie_low);

		if (ret || !v_op)
			break; /* No event to process or error cleaning ARQ */

		iavf_virtchnl_completion(adapter, v_op, v_ret, event.msg_buf,
					 event.msg_len);
		if (pending != 0)
			memset(event.msg_buf, 0, IAVF_MAX_AQ_BUF_SIZE);
	} while (pending);
	mutex_unlock(&adapter->crit_lock);

	if ((adapter->flags & IAVF_FLAG_SETUP_NETDEV_FEATURES)) {
		if (adapter->netdev_registered ||
		    !test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) {
			struct net_device *netdev = adapter->netdev;

			rtnl_lock();
			netdev_update_features(netdev);
			rtnl_unlock();
			/* Request VLAN offload settings */
			if (VLAN_V2_ALLOWED(adapter))
				iavf_set_vlan_offload_features
					(adapter, 0, netdev->features);

			iavf_set_queue_vlan_tag_loc(adapter);
		}

		adapter->flags &= ~IAVF_FLAG_SETUP_NETDEV_FEATURES;
	}
	if ((adapter->flags &
	     (IAVF_FLAG_RESET_PENDING | IAVF_FLAG_RESET_NEEDED)) ||
	    adapter->state == __IAVF_RESETTING)
		goto freedom;

	/* check for error indications */
	val = rd32(hw, hw->aq.arq.len);
	if (val == 0xdeadbeef || val == 0xffffffff) /* device in reset */
		goto freedom;
	oldval = val;
	if (val & IAVF_VF_ARQLEN1_ARQVFE_MASK) {
		dev_info(&adapter->pdev->dev, "ARQ VF Error detected\n");
		val &= ~IAVF_VF_ARQLEN1_ARQVFE_MASK;
	}
	if (val & IAVF_VF_ARQLEN1_ARQOVFL_MASK) {
		dev_info(&adapter->pdev->dev, "ARQ Overflow Error detected\n");
		val &= ~IAVF_VF_ARQLEN1_ARQOVFL_MASK;
	}
	if (val & IAVF_VF_ARQLEN1_ARQCRIT_MASK) {
		dev_info(&adapter->pdev->dev, "ARQ Critical Error detected\n");
		val &= ~IAVF_VF_ARQLEN1_ARQCRIT_MASK;
	}
	if (oldval != val)
		wr32(hw, hw->aq.arq.len, val);

	val = rd32(hw, hw->aq.asq.len);
	oldval = val;
	if (val & IAVF_VF_ATQLEN1_ATQVFE_MASK) {
		dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n");
		val &= ~IAVF_VF_ATQLEN1_ATQVFE_MASK;
	}
	if (val & IAVF_VF_ATQLEN1_ATQOVFL_MASK) {
		dev_info(&adapter->pdev->dev, "ASQ Overflow Error detected\n");
		val &= ~IAVF_VF_ATQLEN1_ATQOVFL_MASK;
	}
	if (val & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
		dev_info(&adapter->pdev->dev, "ASQ Critical Error detected\n");
		val &= ~IAVF_VF_ATQLEN1_ATQCRIT_MASK;
	}
	if (oldval != val)
		wr32(hw, hw->aq.asq.len, val);

freedom:
	kfree(event.msg_buf);
out:
	/* re-enable Admin queue interrupt cause */
	iavf_misc_irq_enable(adapter);
}

/**
 * iavf_client_task - worker thread to perform client work
 * @work: pointer to work_struct containing our data
 *
 * This task handles client interactions. Because client calls can be
 * reentrant, we can't handle them in the watchdog.
 **/
static void iavf_client_task(struct work_struct *work)
{
	struct iavf_adapter *adapter =
		container_of(work, struct iavf_adapter, client_task.work);

	/* If we can't get the client bit, just give up. We'll be rescheduled
	 * later.
	 */

	if (!mutex_trylock(&adapter->client_lock))
		return;

	if (adapter->flags & IAVF_FLAG_SERVICE_CLIENT_REQUESTED) {
		iavf_client_subtask(adapter);
		adapter->flags &= ~IAVF_FLAG_SERVICE_CLIENT_REQUESTED;
		goto out;
	}
	if (adapter->flags & IAVF_FLAG_CLIENT_NEEDS_L2_PARAMS) {
		iavf_notify_client_l2_params(&adapter->vsi);
		adapter->flags &= ~IAVF_FLAG_CLIENT_NEEDS_L2_PARAMS;
		goto out;
	}
	if (adapter->flags & IAVF_FLAG_CLIENT_NEEDS_CLOSE) {
		iavf_notify_client_close(&adapter->vsi, false);
		adapter->flags &= ~IAVF_FLAG_CLIENT_NEEDS_CLOSE;
		goto out;
	}
	if (adapter->flags & IAVF_FLAG_CLIENT_NEEDS_OPEN) {
		iavf_notify_client_open(&adapter->vsi);
		adapter->flags &= ~IAVF_FLAG_CLIENT_NEEDS_OPEN;
	}
out:
	mutex_unlock(&adapter->client_lock);
}

/**
 * iavf_free_all_tx_resources - Free Tx Resources for All Queues
 * @adapter: board private structure
 *
 * Free all transmit software resources
 **/
void iavf_free_all_tx_resources(struct iavf_adapter *adapter)
{
	int i;

	if (!adapter->tx_rings)
		return;

	for (i = 0; i < adapter->num_active_queues; i++)
		if (adapter->tx_rings[i].desc)
			iavf_free_tx_resources(&adapter->tx_rings[i]);
}

/**
 * iavf_setup_all_tx_resources - allocate all queues Tx resources
 * @adapter: board private structure
 *
 * If this function returns with an error, then it's possible one or
 * more of the rings is populated (while the rest are not).  It is the
 * callers duty to clean those orphaned rings.
 *
 * Return 0 on success, negative on failure
 **/
static int iavf_setup_all_tx_resources(struct iavf_adapter *adapter)
{
	int i, err = 0;

	for (i = 0; i < adapter->num_active_queues; i++) {
		adapter->tx_rings[i].count = adapter->tx_desc_count;
		err = iavf_setup_tx_descriptors(&adapter->tx_rings[i]);
		if (!err)
			continue;
		dev_err(&adapter->pdev->dev,
			"Allocation for Tx Queue %u failed\n", i);
		break;
	}

	return err;
}

/**
 * iavf_setup_all_rx_resources - allocate all queues Rx resources
 * @adapter: board private structure
 *
 * If this function returns with an error, then it's possible one or
 * more of the rings is populated (while the rest are not).  It is the
 * callers duty to clean those orphaned rings.
 *
 * Return 0 on success, negative on failure
 **/
static int iavf_setup_all_rx_resources(struct iavf_adapter *adapter)
{
	int i, err = 0;

	for (i = 0; i < adapter->num_active_queues; i++) {
		adapter->rx_rings[i].count = adapter->rx_desc_count;
		err = iavf_setup_rx_descriptors(&adapter->rx_rings[i]);
		if (!err)
			continue;
		dev_err(&adapter->pdev->dev,
			"Allocation for Rx Queue %u failed\n", i);
		break;
	}
	return err;
}

/**
 * iavf_free_all_rx_resources - Free Rx Resources for All Queues
 * @adapter: board private structure
 *
 * Free all receive software resources
 **/
void iavf_free_all_rx_resources(struct iavf_adapter *adapter)
{
	int i;

	if (!adapter->rx_rings)
		return;

	for (i = 0; i < adapter->num_active_queues; i++)
		if (adapter->rx_rings[i].desc)
			iavf_free_rx_resources(&adapter->rx_rings[i]);
}

/**
 * iavf_validate_tx_bandwidth - validate the max Tx bandwidth
 * @adapter: board private structure
 * @max_tx_rate: max Tx bw for a tc
 **/
static int iavf_validate_tx_bandwidth(struct iavf_adapter *adapter,
				      u64 max_tx_rate)
{
	int speed = 0, ret = 0;

	if (ADV_LINK_SUPPORT(adapter)) {
		if (adapter->link_speed_mbps < U32_MAX) {
			speed = adapter->link_speed_mbps;
			goto validate_bw;
		} else {
			dev_err(&adapter->pdev->dev, "Unknown link speed\n");
			return -EINVAL;
		}
	}

	switch (adapter->link_speed) {
	case VIRTCHNL_LINK_SPEED_40GB:
		speed = SPEED_40000;
		break;
	case VIRTCHNL_LINK_SPEED_25GB:
		speed = SPEED_25000;
		break;
	case VIRTCHNL_LINK_SPEED_20GB:
		speed = SPEED_20000;
		break;
	case VIRTCHNL_LINK_SPEED_10GB:
		speed = SPEED_10000;
		break;
	case VIRTCHNL_LINK_SPEED_5GB:
		speed = SPEED_5000;
		break;
	case VIRTCHNL_LINK_SPEED_2_5GB:
		speed = SPEED_2500;
		break;
	case VIRTCHNL_LINK_SPEED_1GB:
		speed = SPEED_1000;
		break;
	case VIRTCHNL_LINK_SPEED_100MB:
		speed = SPEED_100;
		break;
	default:
		break;
	}

validate_bw:
	if (max_tx_rate > speed) {
		dev_err(&adapter->pdev->dev,
			"Invalid tx rate specified\n");
		ret = -EINVAL;
	}

	return ret;
}

/**
 * iavf_validate_ch_config - validate queue mapping info
 * @adapter: board private structure
 * @mqprio_qopt: queue parameters
 *
 * This function validates if the config provided by the user to
 * configure queue channels is valid or not. Returns 0 on a valid
 * config.
 **/
static int iavf_validate_ch_config(struct iavf_adapter *adapter,
				   struct tc_mqprio_qopt_offload *mqprio_qopt)
{
	u64 total_max_rate = 0;
	int i, num_qps = 0;
	u64 tx_rate = 0;
	int ret = 0;

	if (mqprio_qopt->qopt.num_tc > IAVF_MAX_TRAFFIC_CLASS ||
	    mqprio_qopt->qopt.num_tc < 1)
		return -EINVAL;

	for (i = 0; i <= mqprio_qopt->qopt.num_tc - 1; i++) {
		if (!mqprio_qopt->qopt.count[i] ||
		    mqprio_qopt->qopt.offset[i] != num_qps)
			return -EINVAL;
		if (mqprio_qopt->min_rate[i]) {
			dev_err(&adapter->pdev->dev,
				"Invalid min tx rate (greater than 0) specified\n");
			return -EINVAL;
		}
		/*convert to Mbps */
		tx_rate = div_u64(mqprio_qopt->max_rate[i],
				  IAVF_MBPS_DIVISOR);
		total_max_rate += tx_rate;
		num_qps += mqprio_qopt->qopt.count[i];
	}
	if (num_qps > adapter->num_active_queues) {
		dev_err(&adapter->pdev->dev,
			"Cannot support requested number of queues\n");
		return -EINVAL;
	}

	ret = iavf_validate_tx_bandwidth(adapter, total_max_rate);
	return ret;
}

/**
 * iavf_del_all_cloud_filters - delete all cloud filters on the traffic classes
 * @adapter: board private structure
 **/
static void iavf_del_all_cloud_filters(struct iavf_adapter *adapter)
{
	struct iavf_cloud_filter *cf, *cftmp;

	spin_lock_bh(&adapter->cloud_filter_list_lock);
	list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list,
				 list) {
		list_del(&cf->list);
		kfree(cf);
		adapter->num_cloud_filters--;
	}
	spin_unlock_bh(&adapter->cloud_filter_list_lock);
}

/**
 * __iavf_setup_tc - configure multiple traffic classes
 * @netdev: network interface device structure
 * @type_data: tc offload data
 *
 * This function processes the config information provided by the
 * user to configure traffic classes/queue channels and packages the
 * information to request the PF to setup traffic classes.
 *
 * Returns 0 on success.
 **/
static int __iavf_setup_tc(struct net_device *netdev, void *type_data)
{
	struct tc_mqprio_qopt_offload *mqprio_qopt = type_data;
	struct iavf_adapter *adapter = netdev_priv(netdev);
	struct virtchnl_vf_resource *vfres = adapter->vf_res;
	u8 num_tc = 0, total_qps = 0;
	int ret = 0, netdev_tc = 0;
	u64 max_tx_rate;
	u16 mode;
	int i;

	num_tc = mqprio_qopt->qopt.num_tc;
	mode = mqprio_qopt->mode;

	/* delete queue_channel */
	if (!mqprio_qopt->qopt.hw) {
		if (adapter->ch_config.state == __IAVF_TC_RUNNING) {
			/* reset the tc configuration */
			netdev_reset_tc(netdev);
			adapter->num_tc = 0;
			netif_tx_stop_all_queues(netdev);
			netif_tx_disable(netdev);
			iavf_del_all_cloud_filters(adapter);
			adapter->aq_required = IAVF_FLAG_AQ_DISABLE_CHANNELS;
			goto exit;
		} else {
			return -EINVAL;
		}
	}

	/* add queue channel */
	if (mode == TC_MQPRIO_MODE_CHANNEL) {
		if (!(vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ)) {
			dev_err(&adapter->pdev->dev, "ADq not supported\n");
			return -EOPNOTSUPP;
		}
		if (adapter->ch_config.state != __IAVF_TC_INVALID) {
			dev_err(&adapter->pdev->dev, "TC configuration already exists\n");
			return -EINVAL;
		}

		ret = iavf_validate_ch_config(adapter, mqprio_qopt);
		if (ret)
			return ret;
		/* Return if same TC config is requested */
		if (adapter->num_tc == num_tc)
			return 0;
		adapter->num_tc = num_tc;

		for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) {
			if (i < num_tc) {
				adapter->ch_config.ch_info[i].count =
					mqprio_qopt->qopt.count[i];
				adapter->ch_config.ch_info[i].offset =
					mqprio_qopt->qopt.offset[i];
				total_qps += mqprio_qopt->qopt.count[i];
				max_tx_rate = mqprio_qopt->max_rate[i];
				/* convert to Mbps */
				max_tx_rate = div_u64(max_tx_rate,
						      IAVF_MBPS_DIVISOR);
				adapter->ch_config.ch_info[i].max_tx_rate =
					max_tx_rate;
			} else {
				adapter->ch_config.ch_info[i].count = 1;
				adapter->ch_config.ch_info[i].offset = 0;
			}
		}
		adapter->ch_config.total_qps = total_qps;
		netif_tx_stop_all_queues(netdev);
		netif_tx_disable(netdev);
		adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_CHANNELS;
		netdev_reset_tc(netdev);
		/* Report the tc mapping up the stack */
		netdev_set_num_tc(adapter->netdev, num_tc);
		for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) {
			u16 qcount = mqprio_qopt->qopt.count[i];
			u16 qoffset = mqprio_qopt->qopt.offset[i];

			if (i < num_tc)
				netdev_set_tc_queue(netdev, netdev_tc++, qcount,
						    qoffset);
		}
	}
exit:
	return ret;
}

/**
 * iavf_parse_cls_flower - Parse tc flower filters provided by kernel
 * @adapter: board private structure
 * @f: pointer to struct flow_cls_offload
 * @filter: pointer to cloud filter structure
 */
static int iavf_parse_cls_flower(struct iavf_adapter *adapter,
				 struct flow_cls_offload *f,
				 struct iavf_cloud_filter *filter)
{
	struct flow_rule *rule = flow_cls_offload_flow_rule(f);
	struct flow_dissector *dissector = rule->match.dissector;
	u16 n_proto_mask = 0;
	u16 n_proto_key = 0;
	u8 field_flags = 0;
	u16 addr_type = 0;
	u16 n_proto = 0;
	int i = 0;
	struct virtchnl_filter *vf = &filter->f;

	if (dissector->used_keys &
	    ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
	      BIT(FLOW_DISSECTOR_KEY_BASIC) |
	      BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
	      BIT(FLOW_DISSECTOR_KEY_VLAN) |
	      BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
	      BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
	      BIT(FLOW_DISSECTOR_KEY_PORTS) |
	      BIT(FLOW_DISSECTOR_KEY_ENC_KEYID))) {
		dev_err(&adapter->pdev->dev, "Unsupported key used: 0x%x\n",
			dissector->used_keys);
		return -EOPNOTSUPP;
	}

	if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
		struct flow_match_enc_keyid match;

		flow_rule_match_enc_keyid(rule, &match);
		if (match.mask->keyid != 0)
			field_flags |= IAVF_CLOUD_FIELD_TEN_ID;
	}

	if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
		struct flow_match_basic match;

		flow_rule_match_basic(rule, &match);
		n_proto_key = ntohs(match.key->n_proto);
		n_proto_mask = ntohs(match.mask->n_proto);

		if (n_proto_key == ETH_P_ALL) {
			n_proto_key = 0;
			n_proto_mask = 0;
		}
		n_proto = n_proto_key & n_proto_mask;
		if (n_proto != ETH_P_IP && n_proto != ETH_P_IPV6)
			return -EINVAL;
		if (n_proto == ETH_P_IPV6) {
			/* specify flow type as TCP IPv6 */
			vf->flow_type = VIRTCHNL_TCP_V6_FLOW;
		}

		if (match.key->ip_proto != IPPROTO_TCP) {
			dev_info(&adapter->pdev->dev, "Only TCP transport is supported\n");
			return -EINVAL;
		}
	}

	if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
		struct flow_match_eth_addrs match;

		flow_rule_match_eth_addrs(rule, &match);

		/* use is_broadcast and is_zero to check for all 0xf or 0 */
		if (!is_zero_ether_addr(match.mask->dst)) {
			if (is_broadcast_ether_addr(match.mask->dst)) {
				field_flags |= IAVF_CLOUD_FIELD_OMAC;
			} else {
				dev_err(&adapter->pdev->dev, "Bad ether dest mask %pM\n",
					match.mask->dst);
				return -EINVAL;
			}
		}

		if (!is_zero_ether_addr(match.mask->src)) {
			if (is_broadcast_ether_addr(match.mask->src)) {
				field_flags |= IAVF_CLOUD_FIELD_IMAC;
			} else {
				dev_err(&adapter->pdev->dev, "Bad ether src mask %pM\n",
					match.mask->src);
				return -EINVAL;
			}
		}

		if (!is_zero_ether_addr(match.key->dst))
			if (is_valid_ether_addr(match.key->dst) ||
			    is_multicast_ether_addr(match.key->dst)) {
				/* set the mask if a valid dst_mac address */
				for (i = 0; i < ETH_ALEN; i++)
					vf->mask.tcp_spec.dst_mac[i] |= 0xff;
				ether_addr_copy(vf->data.tcp_spec.dst_mac,
						match.key->dst);
			}

		if (!is_zero_ether_addr(match.key->src))
			if (is_valid_ether_addr(match.key->src) ||
			    is_multicast_ether_addr(match.key->src)) {
				/* set the mask if a valid dst_mac address */
				for (i = 0; i < ETH_ALEN; i++)
					vf->mask.tcp_spec.src_mac[i] |= 0xff;
				ether_addr_copy(vf->data.tcp_spec.src_mac,
						match.key->src);
		}
	}

	if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
		struct flow_match_vlan match;

		flow_rule_match_vlan(rule, &match);
		if (match.mask->vlan_id) {
			if (match.mask->vlan_id == VLAN_VID_MASK) {
				field_flags |= IAVF_CLOUD_FIELD_IVLAN;
			} else {
				dev_err(&adapter->pdev->dev, "Bad vlan mask %u\n",
					match.mask->vlan_id);
				return -EINVAL;
			}
		}
		vf->mask.tcp_spec.vlan_id |= cpu_to_be16(0xffff);
		vf->data.tcp_spec.vlan_id = cpu_to_be16(match.key->vlan_id);
	}

	if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
		struct flow_match_control match;

		flow_rule_match_control(rule, &match);
		addr_type = match.key->addr_type;
	}

	if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
		struct flow_match_ipv4_addrs match;

		flow_rule_match_ipv4_addrs(rule, &match);
		if (match.mask->dst) {
			if (match.mask->dst == cpu_to_be32(0xffffffff)) {
				field_flags |= IAVF_CLOUD_FIELD_IIP;
			} else {
				dev_err(&adapter->pdev->dev, "Bad ip dst mask 0x%08x\n",
					be32_to_cpu(match.mask->dst));
				return -EINVAL;
			}
		}

		if (match.mask->src) {
			if (match.mask->src == cpu_to_be32(0xffffffff)) {
				field_flags |= IAVF_CLOUD_FIELD_IIP;
			} else {
				dev_err(&adapter->pdev->dev, "Bad ip src mask 0x%08x\n",
					be32_to_cpu(match.mask->dst));
				return -EINVAL;
			}
		}

		if (field_flags & IAVF_CLOUD_FIELD_TEN_ID) {
			dev_info(&adapter->pdev->dev, "Tenant id not allowed for ip filter\n");
			return -EINVAL;
		}
		if (match.key->dst) {
			vf->mask.tcp_spec.dst_ip[0] |= cpu_to_be32(0xffffffff);
			vf->data.tcp_spec.dst_ip[0] = match.key->dst;
		}
		if (match.key->src) {
			vf->mask.tcp_spec.src_ip[0] |= cpu_to_be32(0xffffffff);
			vf->data.tcp_spec.src_ip[0] = match.key->src;
		}
	}

	if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
		struct flow_match_ipv6_addrs match;

		flow_rule_match_ipv6_addrs(rule, &match);

		/* validate mask, make sure it is not IPV6_ADDR_ANY */
		if (ipv6_addr_any(&match.mask->dst)) {
			dev_err(&adapter->pdev->dev, "Bad ipv6 dst mask 0x%02x\n",
				IPV6_ADDR_ANY);
			return -EINVAL;
		}

		/* src and dest IPv6 address should not be LOOPBACK
		 * (0:0:0:0:0:0:0:1) which can be represented as ::1
		 */
		if (ipv6_addr_loopback(&match.key->dst) ||
		    ipv6_addr_loopback(&match.key->src)) {
			dev_err(&adapter->pdev->dev,
				"ipv6 addr should not be loopback\n");
			return -EINVAL;
		}
		if (!ipv6_addr_any(&match.mask->dst) ||
		    !ipv6_addr_any(&match.mask->src))
			field_flags |= IAVF_CLOUD_FIELD_IIP;

		for (i = 0; i < 4; i++)
			vf->mask.tcp_spec.dst_ip[i] |= cpu_to_be32(0xffffffff);
		memcpy(&vf->data.tcp_spec.dst_ip, &match.key->dst.s6_addr32,
		       sizeof(vf->data.tcp_spec.dst_ip));
		for (i = 0; i < 4; i++)
			vf->mask.tcp_spec.src_ip[i] |= cpu_to_be32(0xffffffff);
		memcpy(&vf->data.tcp_spec.src_ip, &match.key->src.s6_addr32,
		       sizeof(vf->data.tcp_spec.src_ip));
	}
	if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
		struct flow_match_ports match;

		flow_rule_match_ports(rule, &match);
		if (match.mask->src) {
			if (match.mask->src == cpu_to_be16(0xffff)) {
				field_flags |= IAVF_CLOUD_FIELD_IIP;
			} else {
				dev_err(&adapter->pdev->dev, "Bad src port mask %u\n",
					be16_to_cpu(match.mask->src));
				return -EINVAL;
			}
		}

		if (match.mask->dst) {
			if (match.mask->dst == cpu_to_be16(0xffff)) {
				field_flags |= IAVF_CLOUD_FIELD_IIP;
			} else {
				dev_err(&adapter->pdev->dev, "Bad dst port mask %u\n",
					be16_to_cpu(match.mask->dst));
				return -EINVAL;
			}
		}
		if (match.key->dst) {
			vf->mask.tcp_spec.dst_port |= cpu_to_be16(0xffff);
			vf->data.tcp_spec.dst_port = match.key->dst;
		}

		if (match.key->src) {
			vf->mask.tcp_spec.src_port |= cpu_to_be16(0xffff);
			vf->data.tcp_spec.src_port = match.key->src;
		}
	}
	vf->field_flags = field_flags;

	return 0;
}

/**
 * iavf_handle_tclass - Forward to a traffic class on the device
 * @adapter: board private structure
 * @tc: traffic class index on the device
 * @filter: pointer to cloud filter structure
 */
static int iavf_handle_tclass(struct iavf_adapter *adapter, u32 tc,
			      struct iavf_cloud_filter *filter)
{
	if (tc == 0)
		return 0;
	if (tc < adapter->num_tc) {
		if (!filter->f.data.tcp_spec.dst_port) {
			dev_err(&adapter->pdev->dev,
				"Specify destination port to redirect to traffic class other than TC0\n");
			return -EINVAL;
		}
	}
	/* redirect to a traffic class on the same device */
	filter->f.action = VIRTCHNL_ACTION_TC_REDIRECT;
	filter->f.action_meta = tc;
	return 0;
}

/**
 * iavf_configure_clsflower - Add tc flower filters
 * @adapter: board private structure
 * @cls_flower: Pointer to struct flow_cls_offload
 */
static int iavf_configure_clsflower(struct iavf_adapter *adapter,
				    struct flow_cls_offload *cls_flower)
{
	int tc = tc_classid_to_hwtc(adapter->netdev, cls_flower->classid);
	struct iavf_cloud_filter *filter = NULL;
	int err = -EINVAL, count = 50;

	if (tc < 0) {
		dev_err(&adapter->pdev->dev, "Invalid traffic class\n");
		return -EINVAL;
	}

	filter = kzalloc(sizeof(*filter), GFP_KERNEL);
	if (!filter)
		return -ENOMEM;

	while (!mutex_trylock(&adapter->crit_lock)) {
		if (--count == 0) {
			kfree(filter);
			return err;
		}
		udelay(1);
	}

	filter->cookie = cls_flower->cookie;

	/* set the mask to all zeroes to begin with */
	memset(&filter->f.mask.tcp_spec, 0, sizeof(struct virtchnl_l4_spec));
	/* start out with flow type and eth type IPv4 to begin with */
	filter->f.flow_type = VIRTCHNL_TCP_V4_FLOW;
	err = iavf_parse_cls_flower(adapter, cls_flower, filter);
	if (err)
		goto err;

	err = iavf_handle_tclass(adapter, tc, filter);
	if (err)
		goto err;

	/* add filter to the list */
	spin_lock_bh(&adapter->cloud_filter_list_lock);
	list_add_tail(&filter->list, &adapter->cloud_filter_list);
	adapter->num_cloud_filters++;
	filter->add = true;
	adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER;
	spin_unlock_bh(&adapter->cloud_filter_list_lock);
err:
	if (err)
		kfree(filter);

	mutex_unlock(&adapter->crit_lock);
	return err;
}

/* iavf_find_cf - Find the cloud filter in the list
 * @adapter: Board private structure
 * @cookie: filter specific cookie
 *
 * Returns ptr to the filter object or NULL. Must be called while holding the
 * cloud_filter_list_lock.
 */
static struct iavf_cloud_filter *iavf_find_cf(struct iavf_adapter *adapter,
					      unsigned long *cookie)
{
	struct iavf_cloud_filter *filter = NULL;

	if (!cookie)
		return NULL;

	list_for_each_entry(filter, &adapter->cloud_filter_list, list) {
		if (!memcmp(cookie, &filter->cookie, sizeof(filter->cookie)))
			return filter;
	}
	return NULL;
}

/**
 * iavf_delete_clsflower - Remove tc flower filters
 * @adapter: board private structure
 * @cls_flower: Pointer to struct flow_cls_offload
 */
static int iavf_delete_clsflower(struct iavf_adapter *adapter,
				 struct flow_cls_offload *cls_flower)
{
	struct iavf_cloud_filter *filter = NULL;
	int err = 0;

	spin_lock_bh(&adapter->cloud_filter_list_lock);
	filter = iavf_find_cf(adapter, &cls_flower->cookie);
	if (filter) {
		filter->del = true;
		adapter->aq_required |= IAVF_FLAG_AQ_DEL_CLOUD_FILTER;
	} else {
		err = -EINVAL;
	}
	spin_unlock_bh(&adapter->cloud_filter_list_lock);

	return err;
}

/**
 * iavf_setup_tc_cls_flower - flower classifier offloads
 * @adapter: board private structure
 * @cls_flower: pointer to flow_cls_offload struct with flow info
 */
static int iavf_setup_tc_cls_flower(struct iavf_adapter *adapter,
				    struct flow_cls_offload *cls_flower)
{
	switch (cls_flower->command) {
	case FLOW_CLS_REPLACE:
		return iavf_configure_clsflower(adapter, cls_flower);
	case FLOW_CLS_DESTROY:
		return iavf_delete_clsflower(adapter, cls_flower);
	case FLOW_CLS_STATS:
		return -EOPNOTSUPP;
	default:
		return -EOPNOTSUPP;
	}
}

/**
 * iavf_setup_tc_block_cb - block callback for tc
 * @type: type of offload
 * @type_data: offload data
 * @cb_priv:
 *
 * This function is the block callback for traffic classes
 **/
static int iavf_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
				  void *cb_priv)
{
	struct iavf_adapter *adapter = cb_priv;

	if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data))
		return -EOPNOTSUPP;

	switch (type) {
	case TC_SETUP_CLSFLOWER:
		return iavf_setup_tc_cls_flower(cb_priv, type_data);
	default:
		return -EOPNOTSUPP;
	}
}

static LIST_HEAD(iavf_block_cb_list);

/**
 * iavf_setup_tc - configure multiple traffic classes
 * @netdev: network interface device structure
 * @type: type of offload
 * @type_data: tc offload data
 *
 * This function is the callback to ndo_setup_tc in the
 * netdev_ops.
 *
 * Returns 0 on success
 **/
static int iavf_setup_tc(struct net_device *netdev, enum tc_setup_type type,
			 void *type_data)
{
	struct iavf_adapter *adapter = netdev_priv(netdev);

	switch (type) {
	case TC_SETUP_QDISC_MQPRIO:
		return __iavf_setup_tc(netdev, type_data);
	case TC_SETUP_BLOCK:
		return flow_block_cb_setup_simple(type_data,
						  &iavf_block_cb_list,
						  iavf_setup_tc_block_cb,
						  adapter, adapter, true);
	default:
		return -EOPNOTSUPP;
	}
}

/**
 * iavf_open - Called when a network interface is made active
 * @netdev: network interface device structure
 *
 * Returns 0 on success, negative value on failure
 *
 * The open entry point is called when a network interface is made
 * active by the system (IFF_UP).  At this point all resources needed
 * for transmit and receive operations are allocated, the interrupt
 * handler is registered with the OS, the watchdog is started,
 * and the stack is notified that the interface is ready.
 **/
static int iavf_open(struct net_device *netdev)
{
	struct iavf_adapter *adapter = netdev_priv(netdev);
	int err;

	if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) {
		dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n");
		return -EIO;
	}

	while (!mutex_trylock(&adapter->crit_lock))
		usleep_range(500, 1000);

	if (adapter->state != __IAVF_DOWN) {
		err = -EBUSY;
		goto err_unlock;
	}

	if (adapter->state == __IAVF_RUNNING &&
	    !test_bit(__IAVF_VSI_DOWN, adapter->vsi.state)) {
		dev_dbg(&adapter->pdev->dev, "VF is already open.\n");
		err = 0;
		goto err_unlock;
	}

	/* allocate transmit descriptors */
	err = iavf_setup_all_tx_resources(adapter);
	if (err)
		goto err_setup_tx;

	/* allocate receive descriptors */
	err = iavf_setup_all_rx_resources(adapter);
	if (err)
		goto err_setup_rx;

	/* clear any pending interrupts, may auto mask */
	err = iavf_request_traffic_irqs(adapter, netdev->name);
	if (err)
		goto err_req_irq;

	spin_lock_bh(&adapter->mac_vlan_list_lock);

	iavf_add_filter(adapter, adapter->hw.mac.addr);

	spin_unlock_bh(&adapter->mac_vlan_list_lock);

	/* Restore VLAN filters that were removed with IFF_DOWN */
	iavf_restore_filters(adapter);

	iavf_configure(adapter);

	iavf_up_complete(adapter);

	iavf_irq_enable(adapter, true);

	mutex_unlock(&adapter->crit_lock);

	return 0;

err_req_irq:
	iavf_down(adapter);
	iavf_free_traffic_irqs(adapter);
err_setup_rx:
	iavf_free_all_rx_resources(adapter);
err_setup_tx:
	iavf_free_all_tx_resources(adapter);
err_unlock:
	mutex_unlock(&adapter->crit_lock);

	return err;
}

/**
 * iavf_close - Disables a network interface
 * @netdev: network interface device structure
 *
 * Returns 0, this is not allowed to fail
 *
 * The close entry point is called when an interface is de-activated
 * by the OS.  The hardware is still under the drivers control, but
 * needs to be disabled. All IRQs except vector 0 (reserved for admin queue)
 * are freed, along with all transmit and receive resources.
 **/
static int iavf_close(struct net_device *netdev)
{
	struct iavf_adapter *adapter = netdev_priv(netdev);
	int status;

	mutex_lock(&adapter->crit_lock);

	if (adapter->state <= __IAVF_DOWN_PENDING) {
		mutex_unlock(&adapter->crit_lock);
		return 0;
	}

	set_bit(__IAVF_VSI_DOWN, adapter->vsi.state);
	if (CLIENT_ENABLED(adapter))
		adapter->flags |= IAVF_FLAG_CLIENT_NEEDS_CLOSE;

	iavf_down(adapter);
	iavf_change_state(adapter, __IAVF_DOWN_PENDING);
	iavf_free_traffic_irqs(adapter);

	mutex_unlock(&adapter->crit_lock);

	/* We explicitly don't free resources here because the hardware is
	 * still active and can DMA into memory. Resources are cleared in
	 * iavf_virtchnl_completion() after we get confirmation from the PF
	 * driver that the rings have been stopped.
	 *
	 * Also, we wait for state to transition to __IAVF_DOWN before
	 * returning. State change occurs in iavf_virtchnl_completion() after
	 * VF resources are released (which occurs after PF driver processes and
	 * responds to admin queue commands).
	 */

	status = wait_event_timeout(adapter->down_waitqueue,
				    adapter->state == __IAVF_DOWN,
				    msecs_to_jiffies(500));
	if (!status)
		netdev_warn(netdev, "Device resources not yet released\n");
	return 0;
}

/**
 * iavf_change_mtu - Change the Maximum Transfer Unit
 * @netdev: network interface device structure
 * @new_mtu: new value for maximum frame size
 *
 * Returns 0 on success, negative on failure
 **/
static int iavf_change_mtu(struct net_device *netdev, int new_mtu)
{
	struct iavf_adapter *adapter = netdev_priv(netdev);

	netdev_dbg(netdev, "changing MTU from %d to %d\n",
		   netdev->mtu, new_mtu);
	netdev->mtu = new_mtu;
	if (CLIENT_ENABLED(adapter)) {
		iavf_notify_client_l2_params(&adapter->vsi);
		adapter->flags |= IAVF_FLAG_SERVICE_CLIENT_REQUESTED;
	}

	if (netif_running(netdev)) {
		adapter->flags |= IAVF_FLAG_RESET_NEEDED;
		queue_work(iavf_wq, &adapter->reset_task);
	}

	return 0;
}

#define NETIF_VLAN_OFFLOAD_FEATURES	(NETIF_F_HW_VLAN_CTAG_RX | \
					 NETIF_F_HW_VLAN_CTAG_TX | \
					 NETIF_F_HW_VLAN_STAG_RX | \
					 NETIF_F_HW_VLAN_STAG_TX)

/**
 * iavf_set_features - set the netdev feature flags
 * @netdev: ptr to the netdev being adjusted
 * @features: the feature set that the stack is suggesting
 * Note: expects to be called while under rtnl_lock()
 **/
static int iavf_set_features(struct net_device *netdev,
			     netdev_features_t features)
{
	struct iavf_adapter *adapter = netdev_priv(netdev);

	/* trigger update on any VLAN feature change */
	if ((netdev->features & NETIF_VLAN_OFFLOAD_FEATURES) ^
	    (features & NETIF_VLAN_OFFLOAD_FEATURES))
		iavf_set_vlan_offload_features(adapter, netdev->features,
					       features);

	return 0;
}

/**
 * iavf_features_check - Validate encapsulated packet conforms to limits
 * @skb: skb buff
 * @dev: This physical port's netdev
 * @features: Offload features that the stack believes apply
 **/
static netdev_features_t iavf_features_check(struct sk_buff *skb,
					     struct net_device *dev,
					     netdev_features_t features)
{
	size_t len;

	/* No point in doing any of this if neither checksum nor GSO are
	 * being requested for this frame.  We can rule out both by just
	 * checking for CHECKSUM_PARTIAL
	 */
	if (skb->ip_summed != CHECKSUM_PARTIAL)
		return features;

	/* We cannot support GSO if the MSS is going to be less than
	 * 64 bytes.  If it is then we need to drop support for GSO.
	 */
	if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
		features &= ~NETIF_F_GSO_MASK;

	/* MACLEN can support at most 63 words */
	len = skb_network_header(skb) - skb->data;
	if (len & ~(63 * 2))
		goto out_err;

	/* IPLEN and EIPLEN can support at most 127 dwords */
	len = skb_transport_header(skb) - skb_network_header(skb);
	if (len & ~(127 * 4))
		goto out_err;

	if (skb->encapsulation) {
		/* L4TUNLEN can support 127 words */
		len = skb_inner_network_header(skb) - skb_transport_header(skb);
		if (len & ~(127 * 2))
			goto out_err;

		/* IPLEN can support at most 127 dwords */
		len = skb_inner_transport_header(skb) -
		      skb_inner_network_header(skb);
		if (len & ~(127 * 4))
			goto out_err;
	}

	/* No need to validate L4LEN as TCP is the only protocol with a
	 * a flexible value and we support all possible values supported
	 * by TCP, which is at most 15 dwords
	 */

	return features;
out_err:
	return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
}

/**
 * iavf_get_netdev_vlan_hw_features - get NETDEV VLAN features that can toggle on/off
 * @adapter: board private structure
 *
 * Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2
 * were negotiated determine the VLAN features that can be toggled on and off.
 **/
static netdev_features_t
iavf_get_netdev_vlan_hw_features(struct iavf_adapter *adapter)
{
	netdev_features_t hw_features = 0;

	if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags)
		return hw_features;

	/* Enable VLAN features if supported */
	if (VLAN_ALLOWED(adapter)) {
		hw_features |= (NETIF_F_HW_VLAN_CTAG_TX |
				NETIF_F_HW_VLAN_CTAG_RX);
	} else if (VLAN_V2_ALLOWED(adapter)) {
		struct virtchnl_vlan_caps *vlan_v2_caps =
			&adapter->vlan_v2_caps;
		struct virtchnl_vlan_supported_caps *stripping_support =
			&vlan_v2_caps->offloads.stripping_support;
		struct virtchnl_vlan_supported_caps *insertion_support =
			&vlan_v2_caps->offloads.insertion_support;

		if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED &&
		    stripping_support->outer & VIRTCHNL_VLAN_TOGGLE) {
			if (stripping_support->outer &
			    VIRTCHNL_VLAN_ETHERTYPE_8100)
				hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
			if (stripping_support->outer &
			    VIRTCHNL_VLAN_ETHERTYPE_88A8)
				hw_features |= NETIF_F_HW_VLAN_STAG_RX;
		} else if (stripping_support->inner !=
			   VIRTCHNL_VLAN_UNSUPPORTED &&
			   stripping_support->inner & VIRTCHNL_VLAN_TOGGLE) {
			if (stripping_support->inner &
			    VIRTCHNL_VLAN_ETHERTYPE_8100)
				hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
		}

		if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED &&
		    insertion_support->outer & VIRTCHNL_VLAN_TOGGLE) {
			if (insertion_support->outer &
			    VIRTCHNL_VLAN_ETHERTYPE_8100)
				hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
			if (insertion_support->outer &
			    VIRTCHNL_VLAN_ETHERTYPE_88A8)
				hw_features |= NETIF_F_HW_VLAN_STAG_TX;
		} else if (insertion_support->inner &&
			   insertion_support->inner & VIRTCHNL_VLAN_TOGGLE) {
			if (insertion_support->inner &
			    VIRTCHNL_VLAN_ETHERTYPE_8100)
				hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
		}
	}

	return hw_features;
}

/**
 * iavf_get_netdev_vlan_features - get the enabled NETDEV VLAN fetures
 * @adapter: board private structure
 *
 * Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2
 * were negotiated determine the VLAN features that are enabled by default.
 **/
static netdev_features_t
iavf_get_netdev_vlan_features(struct iavf_adapter *adapter)
{
	netdev_features_t features = 0;

	if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags)
		return features;

	if (VLAN_ALLOWED(adapter)) {
		features |= NETIF_F_HW_VLAN_CTAG_FILTER |
			NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX;
	} else if (VLAN_V2_ALLOWED(adapter)) {
		struct virtchnl_vlan_caps *vlan_v2_caps =
			&adapter->vlan_v2_caps;
		struct virtchnl_vlan_supported_caps *filtering_support =
			&vlan_v2_caps->filtering.filtering_support;
		struct virtchnl_vlan_supported_caps *stripping_support =
			&vlan_v2_caps->offloads.stripping_support;
		struct virtchnl_vlan_supported_caps *insertion_support =
			&vlan_v2_caps->offloads.insertion_support;
		u32 ethertype_init;

		/* give priority to outer stripping and don't support both outer
		 * and inner stripping
		 */
		ethertype_init = vlan_v2_caps->offloads.ethertype_init;
		if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) {
			if (stripping_support->outer &
			    VIRTCHNL_VLAN_ETHERTYPE_8100 &&
			    ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
				features |= NETIF_F_HW_VLAN_CTAG_RX;
			else if (stripping_support->outer &
				 VIRTCHNL_VLAN_ETHERTYPE_88A8 &&
				 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8)
				features |= NETIF_F_HW_VLAN_STAG_RX;
		} else if (stripping_support->inner !=
			   VIRTCHNL_VLAN_UNSUPPORTED) {
			if (stripping_support->inner &
			    VIRTCHNL_VLAN_ETHERTYPE_8100 &&
			    ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
				features |= NETIF_F_HW_VLAN_CTAG_RX;
		}

		/* give priority to outer insertion and don't support both outer
		 * and inner insertion
		 */
		if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) {
			if (insertion_support->outer &
			    VIRTCHNL_VLAN_ETHERTYPE_8100 &&
			    ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
				features |= NETIF_F_HW_VLAN_CTAG_TX;
			else if (insertion_support->outer &
				 VIRTCHNL_VLAN_ETHERTYPE_88A8 &&
				 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8)
				features |= NETIF_F_HW_VLAN_STAG_TX;
		} else if (insertion_support->inner !=
			   VIRTCHNL_VLAN_UNSUPPORTED) {
			if (insertion_support->inner &
			    VIRTCHNL_VLAN_ETHERTYPE_8100 &&
			    ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
				features |= NETIF_F_HW_VLAN_CTAG_TX;
		}

		/* give priority to outer filtering and don't bother if both
		 * outer and inner filtering are enabled
		 */
		ethertype_init = vlan_v2_caps->filtering.ethertype_init;
		if (filtering_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) {
			if (filtering_support->outer &
			    VIRTCHNL_VLAN_ETHERTYPE_8100 &&
			    ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
				features |= NETIF_F_HW_VLAN_CTAG_FILTER;
			if (filtering_support->outer &
			    VIRTCHNL_VLAN_ETHERTYPE_88A8 &&
			    ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8)
				features |= NETIF_F_HW_VLAN_STAG_FILTER;
		} else if (filtering_support->inner !=
			   VIRTCHNL_VLAN_UNSUPPORTED) {
			if (filtering_support->inner &
			    VIRTCHNL_VLAN_ETHERTYPE_8100 &&
			    ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
				features |= NETIF_F_HW_VLAN_CTAG_FILTER;
			if (filtering_support->inner &
			    VIRTCHNL_VLAN_ETHERTYPE_88A8 &&
			    ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8)
				features |= NETIF_F_HW_VLAN_STAG_FILTER;
		}
	}

	return features;
}

#define IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested, allowed, feature_bit) \
	(!(((requested) & (feature_bit)) && \
	   !((allowed) & (feature_bit))))

/**
 * iavf_fix_netdev_vlan_features - fix NETDEV VLAN features based on support
 * @adapter: board private structure
 * @requested_features: stack requested NETDEV features
 **/
static netdev_features_t
iavf_fix_netdev_vlan_features(struct iavf_adapter *adapter,
			      netdev_features_t requested_features)
{
	netdev_features_t allowed_features;

	allowed_features = iavf_get_netdev_vlan_hw_features(adapter) |
		iavf_get_netdev_vlan_features(adapter);

	if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
					      allowed_features,
					      NETIF_F_HW_VLAN_CTAG_TX))
		requested_features &= ~NETIF_F_HW_VLAN_CTAG_TX;

	if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
					      allowed_features,
					      NETIF_F_HW_VLAN_CTAG_RX))
		requested_features &= ~NETIF_F_HW_VLAN_CTAG_RX;

	if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
					      allowed_features,
					      NETIF_F_HW_VLAN_STAG_TX))
		requested_features &= ~NETIF_F_HW_VLAN_STAG_TX;
	if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
					      allowed_features,
					      NETIF_F_HW_VLAN_STAG_RX))
		requested_features &= ~NETIF_F_HW_VLAN_STAG_RX;

	if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
					      allowed_features,
					      NETIF_F_HW_VLAN_CTAG_FILTER))
		requested_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;

	if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
					      allowed_features,
					      NETIF_F_HW_VLAN_STAG_FILTER))
		requested_features &= ~NETIF_F_HW_VLAN_STAG_FILTER;

	if ((requested_features &
	     (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) &&
	    (requested_features &
	     (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX)) &&
	    adapter->vlan_v2_caps.offloads.ethertype_match ==
	    VIRTCHNL_ETHERTYPE_STRIPPING_MATCHES_INSERTION) {
		netdev_warn(adapter->netdev, "cannot support CTAG and STAG VLAN stripping and/or insertion simultaneously since CTAG and STAG offloads are mutually exclusive, clearing STAG offload settings\n");
		requested_features &= ~(NETIF_F_HW_VLAN_STAG_RX |
					NETIF_F_HW_VLAN_STAG_TX);
	}

	return requested_features;
}

/**
 * iavf_fix_features - fix up the netdev feature bits
 * @netdev: our net device
 * @features: desired feature bits
 *
 * Returns fixed-up features bits
 **/
static netdev_features_t iavf_fix_features(struct net_device *netdev,
					   netdev_features_t features)
{
	struct iavf_adapter *adapter = netdev_priv(netdev);

	return iavf_fix_netdev_vlan_features(adapter, features);
}

static const struct net_device_ops iavf_netdev_ops = {
	.ndo_open		= iavf_open,
	.ndo_stop		= iavf_close,
	.ndo_start_xmit		= iavf_xmit_frame,
	.ndo_set_rx_mode	= iavf_set_rx_mode,
	.ndo_validate_addr	= eth_validate_addr,
	.ndo_set_mac_address	= iavf_set_mac,
	.ndo_change_mtu		= iavf_change_mtu,
	.ndo_tx_timeout		= iavf_tx_timeout,
	.ndo_vlan_rx_add_vid	= iavf_vlan_rx_add_vid,
	.ndo_vlan_rx_kill_vid	= iavf_vlan_rx_kill_vid,
	.ndo_features_check	= iavf_features_check,
	.ndo_fix_features	= iavf_fix_features,
	.ndo_set_features	= iavf_set_features,
	.ndo_setup_tc		= iavf_setup_tc,
};

/**
 * iavf_check_reset_complete - check that VF reset is complete
 * @hw: pointer to hw struct
 *
 * Returns 0 if device is ready to use, or -EBUSY if it's in reset.
 **/
static int iavf_check_reset_complete(struct iavf_hw *hw)
{
	u32 rstat;
	int i;

	for (i = 0; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) {
		rstat = rd32(hw, IAVF_VFGEN_RSTAT) &
			     IAVF_VFGEN_RSTAT_VFR_STATE_MASK;
		if ((rstat == VIRTCHNL_VFR_VFACTIVE) ||
		    (rstat == VIRTCHNL_VFR_COMPLETED))
			return 0;
		usleep_range(10, 20);
	}
	return -EBUSY;
}

/**
 * iavf_process_config - Process the config information we got from the PF
 * @adapter: board private structure
 *
 * Verify that we have a valid config struct, and set up our netdev features
 * and our VSI struct.
 **/
int iavf_process_config(struct iavf_adapter *adapter)
{
	struct virtchnl_vf_resource *vfres = adapter->vf_res;
	netdev_features_t hw_vlan_features, vlan_features;
	struct net_device *netdev = adapter->netdev;
	netdev_features_t hw_enc_features;
	netdev_features_t hw_features;

	hw_enc_features = NETIF_F_SG			|
			  NETIF_F_IP_CSUM		|
			  NETIF_F_IPV6_CSUM		|
			  NETIF_F_HIGHDMA		|
			  NETIF_F_SOFT_FEATURES	|
			  NETIF_F_TSO			|
			  NETIF_F_TSO_ECN		|
			  NETIF_F_TSO6			|
			  NETIF_F_SCTP_CRC		|
			  NETIF_F_RXHASH		|
			  NETIF_F_RXCSUM		|
			  0;

	/* advertise to stack only if offloads for encapsulated packets is
	 * supported
	 */
	if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ENCAP) {
		hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL	|
				   NETIF_F_GSO_GRE		|
				   NETIF_F_GSO_GRE_CSUM		|
				   NETIF_F_GSO_IPXIP4		|
				   NETIF_F_GSO_IPXIP6		|
				   NETIF_F_GSO_UDP_TUNNEL_CSUM	|
				   NETIF_F_GSO_PARTIAL		|
				   0;

		if (!(vfres->vf_cap_flags &
		      VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
			netdev->gso_partial_features |=
				NETIF_F_GSO_UDP_TUNNEL_CSUM;

		netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
		netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
		netdev->hw_enc_features |= hw_enc_features;
	}
	/* record features VLANs can make use of */
	netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID;

	/* Write features and hw_features separately to avoid polluting
	 * with, or dropping, features that are set when we registered.
	 */
	hw_features = hw_enc_features;

	/* get HW VLAN features that can be toggled */
	hw_vlan_features = iavf_get_netdev_vlan_hw_features(adapter);

	/* Enable cloud filter if ADQ is supported */
	if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ)
		hw_features |= NETIF_F_HW_TC;
	if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_USO)
		hw_features |= NETIF_F_GSO_UDP_L4;

	netdev->hw_features |= hw_features | hw_vlan_features;
	vlan_features = iavf_get_netdev_vlan_features(adapter);

	netdev->features |= hw_features | vlan_features;

	if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_VLAN)
		netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;

	netdev->priv_flags |= IFF_UNICAST_FLT;

	/* Do not turn on offloads when they are requested to be turned off.
	 * TSO needs minimum 576 bytes to work correctly.
	 */
	if (netdev->wanted_features) {
		if (!(netdev->wanted_features & NETIF_F_TSO) ||
		    netdev->mtu < 576)
			netdev->features &= ~NETIF_F_TSO;
		if (!(netdev->wanted_features & NETIF_F_TSO6) ||
		    netdev->mtu < 576)
			netdev->features &= ~NETIF_F_TSO6;
		if (!(netdev->wanted_features & NETIF_F_TSO_ECN))
			netdev->features &= ~NETIF_F_TSO_ECN;
		if (!(netdev->wanted_features & NETIF_F_GRO))
			netdev->features &= ~NETIF_F_GRO;
		if (!(netdev->wanted_features & NETIF_F_GSO))
			netdev->features &= ~NETIF_F_GSO;
	}

	return 0;
}

/**
 * iavf_shutdown - Shutdown the device in preparation for a reboot
 * @pdev: pci device structure
 **/
static void iavf_shutdown(struct pci_dev *pdev)
{
	struct iavf_adapter *adapter = iavf_pdev_to_adapter(pdev);
	struct net_device *netdev = adapter->netdev;

	netif_device_detach(netdev);

	if (netif_running(netdev))
		iavf_close(netdev);

	if (iavf_lock_timeout(&adapter->crit_lock, 5000))
		dev_warn(&adapter->pdev->dev, "failed to acquire crit_lock in %s\n", __FUNCTION__);
	/* Prevent the watchdog from running. */
	iavf_change_state(adapter, __IAVF_REMOVE);
	adapter->aq_required = 0;
	mutex_unlock(&adapter->crit_lock);

#ifdef CONFIG_PM
	pci_save_state(pdev);

#endif
	pci_disable_device(pdev);
}

/**
 * iavf_probe - Device Initialization Routine
 * @pdev: PCI device information struct
 * @ent: entry in iavf_pci_tbl
 *
 * Returns 0 on success, negative on failure
 *
 * iavf_probe initializes an adapter identified by a pci_dev structure.
 * The OS initialization, configuring of the adapter private structure,
 * and a hardware reset occur.
 **/
static int iavf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	struct net_device *netdev;
	struct iavf_adapter *adapter = NULL;
	struct iavf_hw *hw = NULL;
	int err;

	err = pci_enable_device(pdev);
	if (err)
		return err;

	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
	if (err) {
		dev_err(&pdev->dev,
			"DMA configuration failed: 0x%x\n", err);
		goto err_dma;
	}

	err = pci_request_regions(pdev, iavf_driver_name);
	if (err) {
		dev_err(&pdev->dev,
			"pci_request_regions failed 0x%x\n", err);
		goto err_pci_reg;
	}

	pci_enable_pcie_error_reporting(pdev);

	pci_set_master(pdev);

	netdev = alloc_etherdev_mq(sizeof(struct iavf_adapter),
				   IAVF_MAX_REQ_QUEUES);
	if (!netdev) {
		err = -ENOMEM;
		goto err_alloc_etherdev;
	}

	SET_NETDEV_DEV(netdev, &pdev->dev);

	pci_set_drvdata(pdev, netdev);
	adapter = netdev_priv(netdev);

	adapter->netdev = netdev;
	adapter->pdev = pdev;

	hw = &adapter->hw;
	hw->back = adapter;

	adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
	iavf_change_state(adapter, __IAVF_STARTUP);

	/* Call save state here because it relies on the adapter struct. */
	pci_save_state(pdev);

	hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
			      pci_resource_len(pdev, 0));
	if (!hw->hw_addr) {
		err = -EIO;
		goto err_ioremap;
	}
	hw->vendor_id = pdev->vendor;
	hw->device_id = pdev->device;
	pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
	hw->subsystem_vendor_id = pdev->subsystem_vendor;
	hw->subsystem_device_id = pdev->subsystem_device;
	hw->bus.device = PCI_SLOT(pdev->devfn);
	hw->bus.func = PCI_FUNC(pdev->devfn);
	hw->bus.bus_id = pdev->bus->number;

	/* set up the locks for the AQ, do this only once in probe
	 * and destroy them only once in remove
	 */
	mutex_init(&adapter->crit_lock);
	mutex_init(&adapter->client_lock);
	mutex_init(&hw->aq.asq_mutex);
	mutex_init(&hw->aq.arq_mutex);

	spin_lock_init(&adapter->mac_vlan_list_lock);
	spin_lock_init(&adapter->cloud_filter_list_lock);
	spin_lock_init(&adapter->fdir_fltr_lock);
	spin_lock_init(&adapter->adv_rss_lock);

	INIT_LIST_HEAD(&adapter->mac_filter_list);
	INIT_LIST_HEAD(&adapter->vlan_filter_list);
	INIT_LIST_HEAD(&adapter->cloud_filter_list);
	INIT_LIST_HEAD(&adapter->fdir_list_head);
	INIT_LIST_HEAD(&adapter->adv_rss_list_head);

	INIT_WORK(&adapter->reset_task, iavf_reset_task);
	INIT_WORK(&adapter->adminq_task, iavf_adminq_task);
	INIT_DELAYED_WORK(&adapter->watchdog_task, iavf_watchdog_task);
	INIT_DELAYED_WORK(&adapter->client_task, iavf_client_task);
	queue_delayed_work(iavf_wq, &adapter->watchdog_task,
			   msecs_to_jiffies(5 * (pdev->devfn & 0x07)));

	/* Setup the wait queue for indicating transition to down status */
	init_waitqueue_head(&adapter->down_waitqueue);

	return 0;

err_ioremap:
	free_netdev(netdev);
err_alloc_etherdev:
	pci_disable_pcie_error_reporting(pdev);
	pci_release_regions(pdev);
err_pci_reg:
err_dma:
	pci_disable_device(pdev);
	return err;
}

/**
 * iavf_suspend - Power management suspend routine
 * @dev_d: device info pointer
 *
 * Called when the system (VM) is entering sleep/suspend.
 **/
static int __maybe_unused iavf_suspend(struct device *dev_d)
{
	struct net_device *netdev = dev_get_drvdata(dev_d);
	struct iavf_adapter *adapter = netdev_priv(netdev);

	netif_device_detach(netdev);

	while (!mutex_trylock(&adapter->crit_lock))
		usleep_range(500, 1000);

	if (netif_running(netdev)) {
		rtnl_lock();
		iavf_down(adapter);
		rtnl_unlock();
	}
	iavf_free_misc_irq(adapter);
	iavf_reset_interrupt_capability(adapter);

	mutex_unlock(&adapter->crit_lock);

	return 0;
}

/**
 * iavf_resume - Power management resume routine
 * @dev_d: device info pointer
 *
 * Called when the system (VM) is resumed from sleep/suspend.
 **/
static int __maybe_unused iavf_resume(struct device *dev_d)
{
	struct pci_dev *pdev = to_pci_dev(dev_d);
	struct iavf_adapter *adapter;
	u32 err;

	adapter = iavf_pdev_to_adapter(pdev);

	pci_set_master(pdev);

	rtnl_lock();
	err = iavf_set_interrupt_capability(adapter);
	if (err) {
		rtnl_unlock();
		dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n");
		return err;
	}
	err = iavf_request_misc_irq(adapter);
	rtnl_unlock();
	if (err) {
		dev_err(&pdev->dev, "Cannot get interrupt vector.\n");
		return err;
	}

	queue_work(iavf_wq, &adapter->reset_task);

	netif_device_attach(adapter->netdev);

	return err;
}

/**
 * iavf_remove - Device Removal Routine
 * @pdev: PCI device information struct
 *
 * iavf_remove is called by the PCI subsystem to alert the driver
 * that it should release a PCI device.  The could be caused by a
 * Hot-Plug event, or because the driver is going to be removed from
 * memory.
 **/
static void iavf_remove(struct pci_dev *pdev)
{
	struct iavf_adapter *adapter = iavf_pdev_to_adapter(pdev);
	struct net_device *netdev = adapter->netdev;
	struct iavf_fdir_fltr *fdir, *fdirtmp;
	struct iavf_vlan_filter *vlf, *vlftmp;
	struct iavf_adv_rss *rss, *rsstmp;
	struct iavf_mac_filter *f, *ftmp;
	struct iavf_cloud_filter *cf, *cftmp;
	struct iavf_hw *hw = &adapter->hw;
	int err;

	set_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section);
	/* Wait until port initialization is complete.
	 * There are flows where register/unregister netdev may race.
	 */
	while (1) {
		mutex_lock(&adapter->crit_lock);
		if (adapter->state == __IAVF_RUNNING ||
		    adapter->state == __IAVF_DOWN ||
		    adapter->state == __IAVF_INIT_FAILED) {
			mutex_unlock(&adapter->crit_lock);
			break;
		}

		mutex_unlock(&adapter->crit_lock);
		usleep_range(500, 1000);
	}
	cancel_delayed_work_sync(&adapter->watchdog_task);

	if (adapter->netdev_registered) {
		rtnl_lock();
		unregister_netdevice(netdev);
		adapter->netdev_registered = false;
		rtnl_unlock();
	}
	if (CLIENT_ALLOWED(adapter)) {
		err = iavf_lan_del_device(adapter);
		if (err)
			dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
				 err);
	}

	mutex_lock(&adapter->crit_lock);
	dev_info(&adapter->pdev->dev, "Remove device\n");
	iavf_change_state(adapter, __IAVF_REMOVE);

	iavf_request_reset(adapter);
	msleep(50);
	/* If the FW isn't responding, kick it once, but only once. */
	if (!iavf_asq_done(hw)) {
		iavf_request_reset(adapter);
		msleep(50);
	}

	iavf_misc_irq_disable(adapter);
	/* Shut down all the garbage mashers on the detention level */
	cancel_work_sync(&adapter->reset_task);
	cancel_delayed_work_sync(&adapter->watchdog_task);
	cancel_work_sync(&adapter->adminq_task);
	cancel_delayed_work_sync(&adapter->client_task);

	adapter->aq_required = 0;
	adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED;

	iavf_free_all_tx_resources(adapter);
	iavf_free_all_rx_resources(adapter);
	iavf_free_misc_irq(adapter);

	iavf_reset_interrupt_capability(adapter);
	iavf_free_q_vectors(adapter);

	iavf_free_rss(adapter);

	if (hw->aq.asq.count)
		iavf_shutdown_adminq(hw);

	/* destroy the locks only once, here */
	mutex_destroy(&hw->aq.arq_mutex);
	mutex_destroy(&hw->aq.asq_mutex);
	mutex_destroy(&adapter->client_lock);
	mutex_unlock(&adapter->crit_lock);
	mutex_destroy(&adapter->crit_lock);

	iounmap(hw->hw_addr);
	pci_release_regions(pdev);
	iavf_free_queues(adapter);
	kfree(adapter->vf_res);
	spin_lock_bh(&adapter->mac_vlan_list_lock);
	/* If we got removed before an up/down sequence, we've got a filter
	 * hanging out there that we need to get rid of.
	 */
	list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
		list_del(&f->list);
		kfree(f);
	}
	list_for_each_entry_safe(vlf, vlftmp, &adapter->vlan_filter_list,
				 list) {
		list_del(&vlf->list);
		kfree(vlf);
	}

	spin_unlock_bh(&adapter->mac_vlan_list_lock);

	spin_lock_bh(&adapter->cloud_filter_list_lock);
	list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, list) {
		list_del(&cf->list);
		kfree(cf);
	}
	spin_unlock_bh(&adapter->cloud_filter_list_lock);

	spin_lock_bh(&adapter->fdir_fltr_lock);
	list_for_each_entry_safe(fdir, fdirtmp, &adapter->fdir_list_head, list) {
		list_del(&fdir->list);
		kfree(fdir);
	}
	spin_unlock_bh(&adapter->fdir_fltr_lock);

	spin_lock_bh(&adapter->adv_rss_lock);
	list_for_each_entry_safe(rss, rsstmp, &adapter->adv_rss_list_head,
				 list) {
		list_del(&rss->list);
		kfree(rss);
	}
	spin_unlock_bh(&adapter->adv_rss_lock);

	free_netdev(netdev);

	pci_disable_pcie_error_reporting(pdev);

	pci_disable_device(pdev);
}

static SIMPLE_DEV_PM_OPS(iavf_pm_ops, iavf_suspend, iavf_resume);

static struct pci_driver iavf_driver = {
	.name      = iavf_driver_name,
	.id_table  = iavf_pci_tbl,
	.probe     = iavf_probe,
	.remove    = iavf_remove,
	.driver.pm = &iavf_pm_ops,
	.shutdown  = iavf_shutdown,
};

/**
 * iavf_init_module - Driver Registration Routine
 *
 * iavf_init_module is the first routine called when the driver is
 * loaded. All it does is register with the PCI subsystem.
 **/
static int __init iavf_init_module(void)
{
	pr_info("iavf: %s\n", iavf_driver_string);

	pr_info("%s\n", iavf_copyright);

	iavf_wq = alloc_workqueue("%s", WQ_UNBOUND | WQ_MEM_RECLAIM, 1,
				  iavf_driver_name);
	if (!iavf_wq) {
		pr_err("%s: Failed to create workqueue\n", iavf_driver_name);
		return -ENOMEM;
	}
	return pci_register_driver(&iavf_driver);
}

module_init(iavf_init_module);

/**
 * iavf_exit_module - Driver Exit Cleanup Routine
 *
 * iavf_exit_module is called just before the driver is removed
 * from memory.
 **/
static void __exit iavf_exit_module(void)
{
	pci_unregister_driver(&iavf_driver);
	destroy_workqueue(iavf_wq);
}

module_exit(iavf_exit_module);

/* iavf_main.c */