summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/qedf/qedf_main.c
blob: 0a5dd5595dd3c42179543d8453e9d3afc98ba3f7 (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
/*
 *  QLogic FCoE Offload Driver
 *  Copyright (c) 2016-2018 Cavium Inc.
 *
 *  This software is available under the terms of the GNU General Public License
 *  (GPL) Version 2, available from the file COPYING in the main directory of
 *  this source tree.
 */
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/device.h>
#include <linux/highmem.h>
#include <linux/crc32.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/kthread.h>
#include <scsi/libfc.h>
#include <scsi/scsi_host.h>
#include <scsi/fc_frame.h>
#include <linux/if_ether.h>
#include <linux/if_vlan.h>
#include <linux/cpu.h>
#include "qedf.h"
#include "qedf_dbg.h"
#include <uapi/linux/pci_regs.h>

const struct qed_fcoe_ops *qed_ops;

static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
static void qedf_remove(struct pci_dev *pdev);

/*
 * Driver module parameters.
 */
static unsigned int qedf_dev_loss_tmo = 60;
module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
MODULE_PARM_DESC(dev_loss_tmo,  " dev_loss_tmo setting for attached "
	"remote ports (default 60)");

uint qedf_debug = QEDF_LOG_INFO;
module_param_named(debug, qedf_debug, uint, S_IRUGO);
MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
	" mask");

static uint qedf_fipvlan_retries = 60;
module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
	"before giving up (default 60)");

static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
	"(default 1002).");

static int qedf_default_prio = -1;
module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE"
	" traffic (value between 0 and 7, default 3).");

uint qedf_dump_frames;
module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
	"(default off)");

static uint qedf_queue_depth;
module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
	"by the qedf driver. Default is 0 (use OS default).");

uint qedf_io_tracing;
module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
	"into trace buffer. (default off).");

static uint qedf_max_lun = MAX_FIBRE_LUNS;
module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
	"supports. (default 0xffffffff)");

uint qedf_link_down_tmo;
module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
	"link is down by N seconds.");

bool qedf_retry_delay;
module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
	"delay handling (default off).");

static bool qedf_dcbx_no_wait;
module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start "
	"sending FIP VLAN requests on link up (Default: off).");

static uint qedf_dp_module;
module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
	"qed module during probe.");

static uint qedf_dp_level = QED_LEVEL_NOTICE;
module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module  "
	"during probe (0-3: 0 more verbose).");

struct workqueue_struct *qedf_io_wq;

static struct fcoe_percpu_s qedf_global;
static DEFINE_SPINLOCK(qedf_global_lock);

static struct kmem_cache *qedf_io_work_cache;

void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
{
	qedf->vlan_id = vlan_id;
	qedf->vlan_id |= qedf->prio << VLAN_PRIO_SHIFT;
	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Setting vlan_id=%04x "
		   "prio=%d.\n", vlan_id, qedf->prio);
}

/* Returns true if we have a valid vlan, false otherwise */
static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
{
	int rc;

	if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
		QEDF_ERR(&(qedf->dbg_ctx), "Link not up.\n");
		return  false;
	}

	while (qedf->fipvlan_retries--) {
		if (qedf->vlan_id > 0)
			return true;
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
			   "Retry %d.\n", qedf->fipvlan_retries);
		init_completion(&qedf->fipvlan_compl);
		qedf_fcoe_send_vlan_req(qedf);
		rc = wait_for_completion_timeout(&qedf->fipvlan_compl,
		    1 * HZ);
		if (rc > 0) {
			fcoe_ctlr_link_up(&qedf->ctlr);
			return true;
		}
	}

	return false;
}

static void qedf_handle_link_update(struct work_struct *work)
{
	struct qedf_ctx *qedf =
	    container_of(work, struct qedf_ctx, link_update.work);
	int rc;

	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Entered.\n");

	if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
		rc = qedf_initiate_fipvlan_req(qedf);
		if (rc)
			return;
		/*
		 * If we get here then we never received a repsonse to our
		 * fip vlan request so set the vlan_id to the default and
		 * tell FCoE that the link is up
		 */
		QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
			   "response, falling back to default VLAN %d.\n",
			   qedf_fallback_vlan);
		qedf_set_vlan_id(qedf, qedf_fallback_vlan);

		/*
		 * Zero out data_src_addr so we'll update it with the new
		 * lport port_id
		 */
		eth_zero_addr(qedf->data_src_addr);
		fcoe_ctlr_link_up(&qedf->ctlr);
	} else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
		/*
		 * If we hit here and link_down_tmo_valid is still 1 it means
		 * that link_down_tmo timed out so set it to 0 to make sure any
		 * other readers have accurate state.
		 */
		atomic_set(&qedf->link_down_tmo_valid, 0);
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
		    "Calling fcoe_ctlr_link_down().\n");
		fcoe_ctlr_link_down(&qedf->ctlr);
		qedf_wait_for_upload(qedf);
		/* Reset the number of FIP VLAN retries */
		qedf->fipvlan_retries = qedf_fipvlan_retries;
	}
}

#define	QEDF_FCOE_MAC_METHOD_GRANGED_MAC		1
#define QEDF_FCOE_MAC_METHOD_FCF_MAP			2
#define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC		3
static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
{
	u8 *granted_mac;
	struct fc_frame_header *fh = fc_frame_header_get(fp);
	u8 fc_map[3];
	int method = 0;

	/* Get granted MAC address from FIP FLOGI payload */
	granted_mac = fr_cb(fp)->granted_mac;

	/*
	 * We set the source MAC for FCoE traffic based on the Granted MAC
	 * address from the switch.
	 *
	 * If granted_mac is non-zero, we used that.
	 * If the granted_mac is zeroed out, created the FCoE MAC based on
	 * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
	 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
	 * d_id of the FLOGI frame.
	 */
	if (!is_zero_ether_addr(granted_mac)) {
		ether_addr_copy(qedf->data_src_addr, granted_mac);
		method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
	} else if (qedf->ctlr.sel_fcf->fc_map != 0) {
		hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
		qedf->data_src_addr[0] = fc_map[0];
		qedf->data_src_addr[1] = fc_map[1];
		qedf->data_src_addr[2] = fc_map[2];
		qedf->data_src_addr[3] = fh->fh_d_id[0];
		qedf->data_src_addr[4] = fh->fh_d_id[1];
		qedf->data_src_addr[5] = fh->fh_d_id[2];
		method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
	} else {
		fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
		method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
	}

	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
	    "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
}

static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
	void *arg)
{
	struct fc_exch *exch = fc_seq_exch(seq);
	struct fc_lport *lport = exch->lp;
	struct qedf_ctx *qedf = lport_priv(lport);

	if (!qedf) {
		QEDF_ERR(NULL, "qedf is NULL.\n");
		return;
	}

	/*
	 * If ERR_PTR is set then don't try to stat anything as it will cause
	 * a crash when we access fp.
	 */
	if (IS_ERR(fp)) {
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
		    "fp has IS_ERR() set.\n");
		goto skip_stat;
	}

	/* Log stats for FLOGI reject */
	if (fc_frame_payload_op(fp) == ELS_LS_RJT)
		qedf->flogi_failed++;
	else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
		/* Set the source MAC we will use for FCoE traffic */
		qedf_set_data_src_addr(qedf, fp);
	}

	/* Complete flogi_compl so we can proceed to sending ADISCs */
	complete(&qedf->flogi_compl);

skip_stat:
	/* Report response to libfc */
	fc_lport_flogi_resp(seq, fp, lport);
}

static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
	struct fc_frame *fp, unsigned int op,
	void (*resp)(struct fc_seq *,
	struct fc_frame *,
	void *),
	void *arg, u32 timeout)
{
	struct qedf_ctx *qedf = lport_priv(lport);

	/*
	 * Intercept FLOGI for statistic purposes. Note we use the resp
	 * callback to tell if this is really a flogi.
	 */
	if (resp == fc_lport_flogi_resp) {
		qedf->flogi_cnt++;
		return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
		    arg, timeout);
	}

	return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
}

int qedf_send_flogi(struct qedf_ctx *qedf)
{
	struct fc_lport *lport;
	struct fc_frame *fp;

	lport = qedf->lport;

	if (!lport->tt.elsct_send)
		return -EINVAL;

	fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
	if (!fp) {
		QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
		return -ENOMEM;
	}

	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
	    "Sending FLOGI to reestablish session with switch.\n");
	lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
	    ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);

	init_completion(&qedf->flogi_compl);

	return 0;
}

struct qedf_tmp_rdata_item {
	struct fc_rport_priv *rdata;
	struct list_head list;
};

/*
 * This function is called if link_down_tmo is in use.  If we get a link up and
 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
 * sessions with targets.  Otherwise, just call fcoe_ctlr_link_up().
 */
static void qedf_link_recovery(struct work_struct *work)
{
	struct qedf_ctx *qedf =
	    container_of(work, struct qedf_ctx, link_recovery.work);
	struct qedf_rport *fcport;
	struct fc_rport_priv *rdata;
	struct qedf_tmp_rdata_item *rdata_item, *tmp_rdata_item;
	bool rc;
	int retries = 30;
	int rval, i;
	struct list_head rdata_login_list;

	INIT_LIST_HEAD(&rdata_login_list);

	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
	    "Link down tmo did not expire.\n");

	/*
	 * Essentially reset the fcoe_ctlr here without affecting the state
	 * of the libfc structs.
	 */
	qedf->ctlr.state = FIP_ST_LINK_WAIT;
	fcoe_ctlr_link_down(&qedf->ctlr);

	/*
	 * Bring the link up before we send the fipvlan request so libfcoe
	 * can select a new fcf in parallel
	 */
	fcoe_ctlr_link_up(&qedf->ctlr);

	/* Since the link when down and up to verify which vlan we're on */
	qedf->fipvlan_retries = qedf_fipvlan_retries;
	rc = qedf_initiate_fipvlan_req(qedf);
	/* If getting the VLAN fails, set the VLAN to the fallback one */
	if (!rc)
		qedf_set_vlan_id(qedf, qedf_fallback_vlan);

	/*
	 * We need to wait for an FCF to be selected due to the
	 * fcoe_ctlr_link_up other the FLOGI will be rejected.
	 */
	while (retries > 0) {
		if (qedf->ctlr.sel_fcf) {
			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
			    "FCF reselected, proceeding with FLOGI.\n");
			break;
		}
		msleep(500);
		retries--;
	}

	if (retries < 1) {
		QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
		    "FCF selection.\n");
		return;
	}

	rval = qedf_send_flogi(qedf);
	if (rval)
		return;

	/* Wait for FLOGI completion before proceeding with sending ADISCs */
	i = wait_for_completion_timeout(&qedf->flogi_compl,
	    qedf->lport->r_a_tov);
	if (i == 0) {
		QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
		return;
	}

	/*
	 * Call lport->tt.rport_login which will cause libfc to send an
	 * ADISC since the rport is in state ready.
	 */
	rcu_read_lock();
	list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
		rdata = fcport->rdata;
		if (rdata == NULL)
			continue;
		rdata_item = kzalloc(sizeof(struct qedf_tmp_rdata_item),
		    GFP_ATOMIC);
		if (!rdata_item)
			continue;
		if (kref_get_unless_zero(&rdata->kref)) {
			rdata_item->rdata = rdata;
			list_add(&rdata_item->list, &rdata_login_list);
		} else
			kfree(rdata_item);
	}
	rcu_read_unlock();
	/*
	 * Do the fc_rport_login outside of the rcu lock so we don't take a
	 * mutex in an atomic context.
	 */
	list_for_each_entry_safe(rdata_item, tmp_rdata_item, &rdata_login_list,
	    list) {
		list_del(&rdata_item->list);
		fc_rport_login(rdata_item->rdata);
		kref_put(&rdata_item->rdata->kref, fc_rport_destroy);
		kfree(rdata_item);
	}
}

static void qedf_update_link_speed(struct qedf_ctx *qedf,
	struct qed_link_output *link)
{
	struct fc_lport *lport = qedf->lport;

	lport->link_speed = FC_PORTSPEED_UNKNOWN;
	lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;

	/* Set fc_host link speed */
	switch (link->speed) {
	case 10000:
		lport->link_speed = FC_PORTSPEED_10GBIT;
		break;
	case 25000:
		lport->link_speed = FC_PORTSPEED_25GBIT;
		break;
	case 40000:
		lport->link_speed = FC_PORTSPEED_40GBIT;
		break;
	case 50000:
		lport->link_speed = FC_PORTSPEED_50GBIT;
		break;
	case 100000:
		lport->link_speed = FC_PORTSPEED_100GBIT;
		break;
	default:
		lport->link_speed = FC_PORTSPEED_UNKNOWN;
		break;
	}

	/*
	 * Set supported link speed by querying the supported
	 * capabilities of the link.
	 */
	if (link->supported_caps & SUPPORTED_10000baseKR_Full)
		lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
	if (link->supported_caps & SUPPORTED_25000baseKR_Full)
		lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
	if (link->supported_caps & SUPPORTED_40000baseLR4_Full)
		lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
	if (link->supported_caps & SUPPORTED_50000baseKR2_Full)
		lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
	if (link->supported_caps & SUPPORTED_100000baseKR4_Full)
		lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
	fc_host_supported_speeds(lport->host) = lport->link_supported_speeds;
}

static void qedf_link_update(void *dev, struct qed_link_output *link)
{
	struct qedf_ctx *qedf = (struct qedf_ctx *)dev;

	if (link->link_up) {
		if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
			QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,
			    "Ignoring link up event as link is already up.\n");
			return;
		}
		QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
		    link->speed / 1000);

		/* Cancel any pending link down work */
		cancel_delayed_work(&qedf->link_update);

		atomic_set(&qedf->link_state, QEDF_LINK_UP);
		qedf_update_link_speed(qedf, link);

		if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE ||
		    qedf_dcbx_no_wait) {
			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
			     "DCBx done.\n");
			if (atomic_read(&qedf->link_down_tmo_valid) > 0)
				queue_delayed_work(qedf->link_update_wq,
				    &qedf->link_recovery, 0);
			else
				queue_delayed_work(qedf->link_update_wq,
				    &qedf->link_update, 0);
			atomic_set(&qedf->link_down_tmo_valid, 0);
		}

	} else {
		QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");

		atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
		atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
		/*
		 * Flag that we're waiting for the link to come back up before
		 * informing the fcoe layer of the event.
		 */
		if (qedf_link_down_tmo > 0) {
			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
			    "Starting link down tmo.\n");
			atomic_set(&qedf->link_down_tmo_valid, 1);
		}
		qedf->vlan_id = 0;
		qedf_update_link_speed(qedf, link);
		queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
		    qedf_link_down_tmo * HZ);
	}
}


static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
{
	struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
	u8 tmp_prio;

	QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
	    "prio=%d.\n", get->operational.valid, get->operational.enabled,
	    get->operational.app_prio.fcoe);

	if (get->operational.enabled && get->operational.valid) {
		/* If DCBX was already negotiated on link up then just exit */
		if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
			    "DCBX already set on link up.\n");
			return;
		}

		atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);

		/*
		 * Set the 8021q priority in the following manner:
		 *
		 * 1. If a modparam is set use that
		 * 2. If the value is not between 0..7 use the default
		 * 3. Use the priority we get from the DCBX app tag
		 */
		tmp_prio = get->operational.app_prio.fcoe;
		if (qedf_default_prio > -1)
			qedf->prio = qedf_default_prio;
		else if (tmp_prio < 0 || tmp_prio > 7) {
			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
			    "FIP/FCoE prio %d out of range, setting to %d.\n",
			    tmp_prio, QEDF_DEFAULT_PRIO);
			qedf->prio = QEDF_DEFAULT_PRIO;
		} else
			qedf->prio = tmp_prio;

		if (atomic_read(&qedf->link_state) == QEDF_LINK_UP &&
		    !qedf_dcbx_no_wait) {
			if (atomic_read(&qedf->link_down_tmo_valid) > 0)
				queue_delayed_work(qedf->link_update_wq,
				    &qedf->link_recovery, 0);
			else
				queue_delayed_work(qedf->link_update_wq,
				    &qedf->link_update, 0);
			atomic_set(&qedf->link_down_tmo_valid, 0);
		}
	}

}

static u32 qedf_get_login_failures(void *cookie)
{
	struct qedf_ctx *qedf;

	qedf = (struct qedf_ctx *)cookie;
	return qedf->flogi_failed;
}

static struct qed_fcoe_cb_ops qedf_cb_ops = {
	{
		.link_update = qedf_link_update,
		.dcbx_aen = qedf_dcbx_handler,
		.get_generic_tlv_data = qedf_get_generic_tlv_data,
		.get_protocol_tlv_data = qedf_get_protocol_tlv_data,
	}
};

/*
 * Various transport templates.
 */

static struct scsi_transport_template *qedf_fc_transport_template;
static struct scsi_transport_template *qedf_fc_vport_transport_template;

/*
 * SCSI EH handlers
 */
static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
{
	struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
	struct fc_rport_libfc_priv *rp = rport->dd_data;
	struct qedf_rport *fcport;
	struct fc_lport *lport;
	struct qedf_ctx *qedf;
	struct qedf_ioreq *io_req;
	int rc = FAILED;
	int rval;

	if (fc_remote_port_chkready(rport)) {
		QEDF_ERR(NULL, "rport not ready\n");
		goto out;
	}

	lport = shost_priv(sc_cmd->device->host);
	qedf = (struct qedf_ctx *)lport_priv(lport);

	if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) {
		QEDF_ERR(&(qedf->dbg_ctx), "link not ready.\n");
		goto out;
	}

	fcport = (struct qedf_rport *)&rp[1];

	io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
	if (!io_req) {
		QEDF_ERR(&(qedf->dbg_ctx), "io_req is NULL.\n");
		rc = SUCCESS;
		goto out;
	}

	QEDF_ERR(&(qedf->dbg_ctx), "Aborting io_req sc_cmd=%p xid=0x%x "
		  "fp_idx=%d.\n", sc_cmd, io_req->xid, io_req->fp_idx);

	if (qedf->stop_io_on_error) {
		qedf_stop_all_io(qedf);
		rc = SUCCESS;
		goto out;
	}

	init_completion(&io_req->abts_done);
	rval = qedf_initiate_abts(io_req, true);
	if (rval) {
		QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
		goto out;
	}

	wait_for_completion(&io_req->abts_done);

	if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
	    io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
	    io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
		/*
		 * If we get a reponse to the abort this is success from
		 * the perspective that all references to the command have
		 * been removed from the driver and firmware
		 */
		rc = SUCCESS;
	} else {
		/* If the abort and cleanup failed then return a failure */
		rc = FAILED;
	}

	if (rc == SUCCESS)
		QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
			  io_req->xid);
	else
		QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
			  io_req->xid);

out:
	return rc;
}

static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
{
	QEDF_ERR(NULL, "TARGET RESET Issued...");
	return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
}

static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
{
	QEDF_ERR(NULL, "LUN RESET Issued...\n");
	return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
}

void qedf_wait_for_upload(struct qedf_ctx *qedf)
{
	while (1) {
		if (atomic_read(&qedf->num_offloads))
			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
			    "Waiting for all uploads to complete.\n");
		else
			break;
		msleep(500);
	}
}

/* Performs soft reset of qedf_ctx by simulating a link down/up */
static void qedf_ctx_soft_reset(struct fc_lport *lport)
{
	struct qedf_ctx *qedf;

	if (lport->vport) {
		QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n");
		return;
	}

	qedf = lport_priv(lport);

	/* For host reset, essentially do a soft link up/down */
	atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
	queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
	    0);
	qedf_wait_for_upload(qedf);
	atomic_set(&qedf->link_state, QEDF_LINK_UP);
	qedf->vlan_id  = 0;
	queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
	    0);
}

/* Reset the host by gracefully logging out and then logging back in */
static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
{
	struct fc_lport *lport;
	struct qedf_ctx *qedf;
	struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
	struct fc_rport_libfc_priv *rp = rport->dd_data;
	struct qedf_rport *fcport = (struct qedf_rport *)&rp[1];
	int rval;

	rval = fc_remote_port_chkready(rport);

	if (rval) {
		QEDF_ERR(NULL, "device_reset rport not ready\n");
		return FAILED;
	}

	if (fcport == NULL) {
		QEDF_ERR(NULL, "device_reset: rport is NULL\n");
		return FAILED;
	}

	lport = shost_priv(sc_cmd->device->host);
	qedf = lport_priv(lport);

	if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
	    test_bit(QEDF_UNLOADING, &qedf->flags))
		return FAILED;

	QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");

	qedf_ctx_soft_reset(lport);

	return SUCCESS;
}

static int qedf_slave_configure(struct scsi_device *sdev)
{
	if (qedf_queue_depth) {
		scsi_change_queue_depth(sdev, qedf_queue_depth);
	}

	return 0;
}

static struct scsi_host_template qedf_host_template = {
	.module 	= THIS_MODULE,
	.name 		= QEDF_MODULE_NAME,
	.this_id 	= -1,
	.cmd_per_lun	= 32,
	.use_clustering = ENABLE_CLUSTERING,
	.max_sectors 	= 0xffff,
	.queuecommand 	= qedf_queuecommand,
	.shost_attrs	= qedf_host_attrs,
	.eh_abort_handler	= qedf_eh_abort,
	.eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
	.eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
	.eh_host_reset_handler  = qedf_eh_host_reset,
	.slave_configure	= qedf_slave_configure,
	.dma_boundary = QED_HW_DMA_BOUNDARY,
	.sg_tablesize = QEDF_MAX_BDS_PER_CMD,
	.can_queue = FCOE_PARAMS_NUM_TASKS,
	.change_queue_depth = scsi_change_queue_depth,
};

static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
{
	int rc;

	spin_lock(&qedf_global_lock);
	rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
	spin_unlock(&qedf_global_lock);

	return rc;
}

static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
{
	struct qedf_rport *fcport;
	struct fc_rport_priv *rdata;

	rcu_read_lock();
	list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
		rdata = fcport->rdata;
		if (rdata == NULL)
			continue;
		if (rdata->ids.port_id == port_id) {
			rcu_read_unlock();
			return fcport;
		}
	}
	rcu_read_unlock();

	/* Return NULL to caller to let them know fcport was not found */
	return NULL;
}

/* Transmits an ELS frame over an offloaded session */
static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
{
	struct fc_frame_header *fh;
	int rc = 0;

	fh = fc_frame_header_get(fp);
	if ((fh->fh_type == FC_TYPE_ELS) &&
	    (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
		switch (fc_frame_payload_op(fp)) {
		case ELS_ADISC:
			qedf_send_adisc(fcport, fp);
			rc = 1;
			break;
		}
	}

	return rc;
}

/**
 * qedf_xmit - qedf FCoE frame transmit function
 *
 */
static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
{
	struct fc_lport		*base_lport;
	struct qedf_ctx		*qedf;
	struct ethhdr		*eh;
	struct fcoe_crc_eof	*cp;
	struct sk_buff		*skb;
	struct fc_frame_header	*fh;
	struct fcoe_hdr		*hp;
	u8			sof, eof;
	u32			crc;
	unsigned int		hlen, tlen, elen;
	int			wlen;
	struct fc_stats		*stats;
	struct fc_lport *tmp_lport;
	struct fc_lport *vn_port = NULL;
	struct qedf_rport *fcport;
	int rc;
	u16 vlan_tci = 0;

	qedf = (struct qedf_ctx *)lport_priv(lport);

	fh = fc_frame_header_get(fp);
	skb = fp_skb(fp);

	/* Filter out traffic to other NPIV ports on the same host */
	if (lport->vport)
		base_lport = shost_priv(vport_to_shost(lport->vport));
	else
		base_lport = lport;

	/* Flag if the destination is the base port */
	if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
		vn_port = base_lport;
	} else {
		/* Got through the list of vports attached to the base_lport
		 * and see if we have a match with the destination address.
		 */
		list_for_each_entry(tmp_lport, &base_lport->vports, list) {
			if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
				vn_port = tmp_lport;
				break;
			}
		}
	}
	if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
		struct fc_rport_priv *rdata = NULL;

		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
		    "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
		kfree_skb(skb);
		rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
		if (rdata)
			rdata->retries = lport->max_rport_retry_count;
		return -EINVAL;
	}
	/* End NPIV filtering */

	if (!qedf->ctlr.sel_fcf) {
		kfree_skb(skb);
		return 0;
	}

	if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
		QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
		kfree_skb(skb);
		return 0;
	}

	if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
		QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
		kfree_skb(skb);
		return 0;
	}

	if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
		if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
			return 0;
	}

	/* Check to see if this needs to be sent on an offloaded session */
	fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));

	if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
		rc = qedf_xmit_l2_frame(fcport, fp);
		/*
		 * If the frame was successfully sent over the middle path
		 * then do not try to also send it over the LL2 path
		 */
		if (rc)
			return 0;
	}

	sof = fr_sof(fp);
	eof = fr_eof(fp);

	elen = sizeof(struct ethhdr);
	hlen = sizeof(struct fcoe_hdr);
	tlen = sizeof(struct fcoe_crc_eof);
	wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;

	skb->ip_summed = CHECKSUM_NONE;
	crc = fcoe_fc_crc(fp);

	/* copy port crc and eof to the skb buff */
	if (skb_is_nonlinear(skb)) {
		skb_frag_t *frag;

		if (qedf_get_paged_crc_eof(skb, tlen)) {
			kfree_skb(skb);
			return -ENOMEM;
		}
		frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
		cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
	} else {
		cp = skb_put(skb, tlen);
	}

	memset(cp, 0, sizeof(*cp));
	cp->fcoe_eof = eof;
	cp->fcoe_crc32 = cpu_to_le32(~crc);
	if (skb_is_nonlinear(skb)) {
		kunmap_atomic(cp);
		cp = NULL;
	}


	/* adjust skb network/transport offsets to match mac/fcoe/port */
	skb_push(skb, elen + hlen);
	skb_reset_mac_header(skb);
	skb_reset_network_header(skb);
	skb->mac_len = elen;
	skb->protocol = htons(ETH_P_FCOE);

	/*
	 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
	 * for FIP/FCoE traffic.
	 */
	__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);

	/* fill up mac and fcoe headers */
	eh = eth_hdr(skb);
	eh->h_proto = htons(ETH_P_FCOE);
	if (qedf->ctlr.map_dest)
		fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
	else
		/* insert GW address */
		ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);

	/* Set the source MAC address */
	ether_addr_copy(eh->h_source, qedf->data_src_addr);

	hp = (struct fcoe_hdr *)(eh + 1);
	memset(hp, 0, sizeof(*hp));
	if (FC_FCOE_VER)
		FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
	hp->fcoe_sof = sof;

	/*update tx stats */
	stats = per_cpu_ptr(lport->stats, get_cpu());
	stats->TxFrames++;
	stats->TxWords += wlen;
	put_cpu();

	/* Get VLAN ID from skb for printing purposes */
	__vlan_hwaccel_get_tag(skb, &vlan_tci);

	/* send down to lld */
	fr_dev(fp) = lport;
	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
	    "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
	    ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
	    vlan_tci);
	if (qedf_dump_frames)
		print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
		    1, skb->data, skb->len, false);
	qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);

	return 0;
}

static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
{
	int rval = 0;
	u32 *pbl;
	dma_addr_t page;
	int num_pages;

	/* Calculate appropriate queue and PBL sizes */
	fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
	fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
	fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
	    sizeof(void *);
	fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;

	fcport->sq = dma_zalloc_coherent(&qedf->pdev->dev,
	    fcport->sq_mem_size, &fcport->sq_dma, GFP_KERNEL);
	if (!fcport->sq) {
		QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
		rval = 1;
		goto out;
	}

	fcport->sq_pbl = dma_zalloc_coherent(&qedf->pdev->dev,
	    fcport->sq_pbl_size, &fcport->sq_pbl_dma, GFP_KERNEL);
	if (!fcport->sq_pbl) {
		QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
		rval = 1;
		goto out_free_sq;
	}

	/* Create PBL */
	num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
	page = fcport->sq_dma;
	pbl = (u32 *)fcport->sq_pbl;

	while (num_pages--) {
		*pbl = U64_LO(page);
		pbl++;
		*pbl = U64_HI(page);
		pbl++;
		page += QEDF_PAGE_SIZE;
	}

	return rval;

out_free_sq:
	dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
	    fcport->sq_dma);
out:
	return rval;
}

static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
{
	if (fcport->sq_pbl)
		dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
		    fcport->sq_pbl, fcport->sq_pbl_dma);
	if (fcport->sq)
		dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
		    fcport->sq, fcport->sq_dma);
}

static int qedf_offload_connection(struct qedf_ctx *qedf,
	struct qedf_rport *fcport)
{
	struct qed_fcoe_params_offload conn_info;
	u32 port_id;
	int rval;
	uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));

	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
		   "portid=%06x.\n", fcport->rdata->ids.port_id);
	rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
	    &fcport->fw_cid, &fcport->p_doorbell);
	if (rval) {
		QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
			   "for portid=%06x.\n", fcport->rdata->ids.port_id);
		rval = 1; /* For some reason qed returns 0 on failure here */
		goto out;
	}

	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
		   "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
		   fcport->fw_cid, fcport->handle);

	memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));

	/* Fill in the offload connection info */
	conn_info.sq_pbl_addr = fcport->sq_pbl_dma;

	conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
	conn_info.sq_next_page_addr =
	    (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));

	/* Need to use our FCoE MAC for the offload session */
	ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);

	ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);

	conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
	conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20;
	conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
	conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;

	/* Set VLAN data */
	conn_info.vlan_tag = qedf->vlan_id <<
	    FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
	conn_info.vlan_tag |=
	    qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
	conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
	    FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);

	/* Set host port source id */
	port_id = fc_host_port_id(qedf->lport->host);
	fcport->sid = port_id;
	conn_info.s_id.addr_hi = (port_id & 0x000000FF);
	conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
	conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;

	conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;

	/* Set remote port destination id */
	port_id = fcport->rdata->rport->port_id;
	conn_info.d_id.addr_hi = (port_id & 0x000000FF);
	conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
	conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;

	conn_info.def_q_idx = 0; /* Default index for send queue? */

	/* Set FC-TAPE specific flags if needed */
	if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
		    "Enable CONF, REC for portid=%06x.\n",
		    fcport->rdata->ids.port_id);
		conn_info.flags |= 1 <<
		    FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
		conn_info.flags |=
		    ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
		    FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
	}

	rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
	if (rval) {
		QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
			   "for portid=%06x.\n", fcport->rdata->ids.port_id);
		goto out_free_conn;
	} else
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
			   "succeeded portid=%06x total_sqe=%d.\n",
			   fcport->rdata->ids.port_id, total_sqe);

	spin_lock_init(&fcport->rport_lock);
	atomic_set(&fcport->free_sqes, total_sqe);
	return 0;
out_free_conn:
	qed_ops->release_conn(qedf->cdev, fcport->handle);
out:
	return rval;
}

#define QEDF_TERM_BUFF_SIZE		10
static void qedf_upload_connection(struct qedf_ctx *qedf,
	struct qedf_rport *fcport)
{
	void *term_params;
	dma_addr_t term_params_dma;

	/* Term params needs to be a DMA coherent buffer as qed shared the
	 * physical DMA address with the firmware. The buffer may be used in
	 * the receive path so we may eventually have to move this.
	 */
	term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
		&term_params_dma, GFP_KERNEL);

	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
		   "port_id=%06x.\n", fcport->rdata->ids.port_id);

	qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
	qed_ops->release_conn(qedf->cdev, fcport->handle);

	dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
	    term_params_dma);
}

static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
	struct qedf_rport *fcport)
{
	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
	    fcport->rdata->ids.port_id);

	/* Flush any remaining i/o's before we upload the connection */
	qedf_flush_active_ios(fcport, -1);

	if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
		qedf_upload_connection(qedf, fcport);
	qedf_free_sq(qedf, fcport);
	fcport->rdata = NULL;
	fcport->qedf = NULL;
}

/**
 * This event_callback is called after successful completion of libfc
 * initiated target login. qedf can proceed with initiating the session
 * establishment.
 */
static void qedf_rport_event_handler(struct fc_lport *lport,
				struct fc_rport_priv *rdata,
				enum fc_rport_event event)
{
	struct qedf_ctx *qedf = lport_priv(lport);
	struct fc_rport *rport = rdata->rport;
	struct fc_rport_libfc_priv *rp;
	struct qedf_rport *fcport;
	u32 port_id;
	int rval;
	unsigned long flags;

	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
		   "port_id = 0x%x\n", event, rdata->ids.port_id);

	switch (event) {
	case RPORT_EV_READY:
		if (!rport) {
			QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
			break;
		}

		rp = rport->dd_data;
		fcport = (struct qedf_rport *)&rp[1];
		fcport->qedf = qedf;

		if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
			QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
			    "portid=0x%x as max number of offloaded sessions "
			    "reached.\n", rdata->ids.port_id);
			return;
		}

		/*
		 * Don't try to offload the session again. Can happen when we
		 * get an ADISC
		 */
		if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
			QEDF_WARN(&(qedf->dbg_ctx), "Session already "
				   "offloaded, portid=0x%x.\n",
				   rdata->ids.port_id);
			return;
		}

		if (rport->port_id == FC_FID_DIR_SERV) {
			/*
			 * qedf_rport structure doesn't exist for
			 * directory server.
			 * We should not come here, as lport will
			 * take care of fabric login
			 */
			QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
			    "exist for dir server port_id=%x\n",
			    rdata->ids.port_id);
			break;
		}

		if (rdata->spp_type != FC_TYPE_FCP) {
			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
			    "Not offloading since spp type isn't FCP\n");
			break;
		}
		if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
			    "Not FCP target so not offloading\n");
			break;
		}

		fcport->rdata = rdata;
		fcport->rport = rport;

		rval = qedf_alloc_sq(qedf, fcport);
		if (rval) {
			qedf_cleanup_fcport(qedf, fcport);
			break;
		}

		/* Set device type */
		if (rdata->flags & FC_RP_FLAGS_RETRY &&
		    rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
		    !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
			fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
			    "portid=%06x is a TAPE device.\n",
			    rdata->ids.port_id);
		} else {
			fcport->dev_type = QEDF_RPORT_TYPE_DISK;
		}

		rval = qedf_offload_connection(qedf, fcport);
		if (rval) {
			qedf_cleanup_fcport(qedf, fcport);
			break;
		}

		/* Add fcport to list of qedf_ctx list of offloaded ports */
		spin_lock_irqsave(&qedf->hba_lock, flags);
		list_add_rcu(&fcport->peers, &qedf->fcports);
		spin_unlock_irqrestore(&qedf->hba_lock, flags);

		/*
		 * Set the session ready bit to let everyone know that this
		 * connection is ready for I/O
		 */
		set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
		atomic_inc(&qedf->num_offloads);

		break;
	case RPORT_EV_LOGO:
	case RPORT_EV_FAILED:
	case RPORT_EV_STOP:
		port_id = rdata->ids.port_id;
		if (port_id == FC_FID_DIR_SERV)
			break;

		if (!rport) {
			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
			    "port_id=%x - rport notcreated Yet!!\n", port_id);
			break;
		}
		rp = rport->dd_data;
		/*
		 * Perform session upload. Note that rdata->peers is already
		 * removed from disc->rports list before we get this event.
		 */
		fcport = (struct qedf_rport *)&rp[1];

		/* Only free this fcport if it is offloaded already */
		if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
			set_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags);
			qedf_cleanup_fcport(qedf, fcport);

			/*
			 * Remove fcport to list of qedf_ctx list of offloaded
			 * ports
			 */
			spin_lock_irqsave(&qedf->hba_lock, flags);
			list_del_rcu(&fcport->peers);
			spin_unlock_irqrestore(&qedf->hba_lock, flags);

			clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
			    &fcport->flags);
			atomic_dec(&qedf->num_offloads);
		}

		break;

	case RPORT_EV_NONE:
		break;
	}
}

static void qedf_abort_io(struct fc_lport *lport)
{
	/* NO-OP but need to fill in the template */
}

static void qedf_fcp_cleanup(struct fc_lport *lport)
{
	/*
	 * NO-OP but need to fill in template to prevent a NULL
	 * function pointer dereference during link down. I/Os
	 * will be flushed when port is uploaded.
	 */
}

static struct libfc_function_template qedf_lport_template = {
	.frame_send		= qedf_xmit,
	.fcp_abort_io		= qedf_abort_io,
	.fcp_cleanup		= qedf_fcp_cleanup,
	.rport_event_callback	= qedf_rport_event_handler,
	.elsct_send		= qedf_elsct_send,
};

static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
{
	fcoe_ctlr_init(&qedf->ctlr, FIP_ST_AUTO);

	qedf->ctlr.send = qedf_fip_send;
	qedf->ctlr.get_src_addr = qedf_get_src_mac;
	ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
}

static void qedf_setup_fdmi(struct qedf_ctx *qedf)
{
	struct fc_lport *lport = qedf->lport;
	struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host);
	u8 buf[8];
	int i, pos;

	/*
	 * fdmi_enabled needs to be set for libfc to execute FDMI registration.
	 */
	lport->fdmi_enabled = 1;

	/*
	 * Setup the necessary fc_host attributes to that will be used to fill
	 * in the FDMI information.
	 */

	/* Get the PCI-e Device Serial Number Capability */
	pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
	if (pos) {
		pos += 4;
		for (i = 0; i < 8; i++)
			pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);

		snprintf(fc_host->serial_number,
		    sizeof(fc_host->serial_number),
		    "%02X%02X%02X%02X%02X%02X%02X%02X",
		    buf[7], buf[6], buf[5], buf[4],
		    buf[3], buf[2], buf[1], buf[0]);
	} else
		snprintf(fc_host->serial_number,
		    sizeof(fc_host->serial_number), "Unknown");

	snprintf(fc_host->manufacturer,
	    sizeof(fc_host->manufacturer), "%s", "Cavium Inc.");

	snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000");

	snprintf(fc_host->model_description, sizeof(fc_host->model_description),
	    "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller"
	    "(FCoE)");

	snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version),
	    "Rev %d", qedf->pdev->revision);

	snprintf(fc_host->driver_version, sizeof(fc_host->driver_version),
	    "%s", QEDF_VERSION);

	snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version),
	    "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION,
	    FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
}

static int qedf_lport_setup(struct qedf_ctx *qedf)
{
	struct fc_lport *lport = qedf->lport;

	lport->link_up = 0;
	lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
	lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
	lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
	    FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
	lport->boot_time = jiffies;
	lport->e_d_tov = 2 * 1000;
	lport->r_a_tov = 10 * 1000;

	/* Set NPIV support */
	lport->does_npiv = 1;
	fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;

	fc_set_wwnn(lport, qedf->wwnn);
	fc_set_wwpn(lport, qedf->wwpn);

	fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0);

	/* Allocate the exchange manager */
	fc_exch_mgr_alloc(lport, FC_CLASS_3, qedf->max_scsi_xid + 1,
	    qedf->max_els_xid, NULL);

	if (fc_lport_init_stats(lport))
		return -ENOMEM;

	/* Finish lport config */
	fc_lport_config(lport);

	/* Set max frame size */
	fc_set_mfs(lport, QEDF_MFS);
	fc_host_maxframe_size(lport->host) = lport->mfs;

	/* Set default dev_loss_tmo based on module parameter */
	fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;

	/* Set symbolic node name */
	snprintf(fc_host_symbolic_name(lport->host), 256,
	    "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION);

	qedf_setup_fdmi(qedf);

	return 0;
}

/*
 * NPIV functions
 */

static int qedf_vport_libfc_config(struct fc_vport *vport,
	struct fc_lport *lport)
{
	lport->link_up = 0;
	lport->qfull = 0;
	lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
	lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
	lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
	    FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
	lport->boot_time = jiffies;
	lport->e_d_tov = 2 * 1000;
	lport->r_a_tov = 10 * 1000;
	lport->does_npiv = 1; /* Temporary until we add NPIV support */

	/* Allocate stats for vport */
	if (fc_lport_init_stats(lport))
		return -ENOMEM;

	/* Finish lport config */
	fc_lport_config(lport);

	/* offload related configuration */
	lport->crc_offload = 0;
	lport->seq_offload = 0;
	lport->lro_enabled = 0;
	lport->lro_xid = 0;
	lport->lso_max = 0;

	return 0;
}

static int qedf_vport_create(struct fc_vport *vport, bool disabled)
{
	struct Scsi_Host *shost = vport_to_shost(vport);
	struct fc_lport *n_port = shost_priv(shost);
	struct fc_lport *vn_port;
	struct qedf_ctx *base_qedf = lport_priv(n_port);
	struct qedf_ctx *vport_qedf;

	char buf[32];
	int rc = 0;

	rc = fcoe_validate_vport_create(vport);
	if (rc) {
		fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
		QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
			   "WWPN (0x%s) already exists.\n", buf);
		goto err1;
	}

	if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
		QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
			   "because link is not up.\n");
		rc = -EIO;
		goto err1;
	}

	vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
	if (!vn_port) {
		QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
			   "for vport.\n");
		rc = -ENOMEM;
		goto err1;
	}

	fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
	QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
	    buf);

	/* Copy some fields from base_qedf */
	vport_qedf = lport_priv(vn_port);
	memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));

	/* Set qedf data specific to this vport */
	vport_qedf->lport = vn_port;
	/* Use same hba_lock as base_qedf */
	vport_qedf->hba_lock = base_qedf->hba_lock;
	vport_qedf->pdev = base_qedf->pdev;
	vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
	init_completion(&vport_qedf->flogi_compl);
	INIT_LIST_HEAD(&vport_qedf->fcports);

	rc = qedf_vport_libfc_config(vport, vn_port);
	if (rc) {
		QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
		    "for lport stats.\n");
		goto err2;
	}

	fc_set_wwnn(vn_port, vport->node_name);
	fc_set_wwpn(vn_port, vport->port_name);
	vport_qedf->wwnn = vn_port->wwnn;
	vport_qedf->wwpn = vn_port->wwpn;

	vn_port->host->transportt = qedf_fc_vport_transport_template;
	vn_port->host->can_queue = QEDF_MAX_ELS_XID;
	vn_port->host->max_lun = qedf_max_lun;
	vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
	vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;

	rc = scsi_add_host(vn_port->host, &vport->dev);
	if (rc) {
		QEDF_WARN(&(base_qedf->dbg_ctx), "Error adding Scsi_Host.\n");
		goto err2;
	}

	/* Set default dev_loss_tmo based on module parameter */
	fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;

	/* Init libfc stuffs */
	memcpy(&vn_port->tt, &qedf_lport_template,
		sizeof(qedf_lport_template));
	fc_exch_init(vn_port);
	fc_elsct_init(vn_port);
	fc_lport_init(vn_port);
	fc_disc_init(vn_port);
	fc_disc_config(vn_port, vn_port);


	/* Allocate the exchange manager */
	shost = vport_to_shost(vport);
	n_port = shost_priv(shost);
	fc_exch_mgr_list_clone(n_port, vn_port);

	/* Set max frame size */
	fc_set_mfs(vn_port, QEDF_MFS);

	fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;

	if (disabled) {
		fc_vport_set_state(vport, FC_VPORT_DISABLED);
	} else {
		vn_port->boot_time = jiffies;
		fc_fabric_login(vn_port);
		fc_vport_setlink(vn_port);
	}

	QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
		   vn_port);

	/* Set up debug context for vport */
	vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
	vport_qedf->dbg_ctx.pdev = base_qedf->pdev;

err2:
	scsi_host_put(vn_port->host);
err1:
	return rc;
}

static int qedf_vport_destroy(struct fc_vport *vport)
{
	struct Scsi_Host *shost = vport_to_shost(vport);
	struct fc_lport *n_port = shost_priv(shost);
	struct fc_lport *vn_port = vport->dd_data;
	struct qedf_ctx *qedf = lport_priv(vn_port);

	if (!qedf) {
		QEDF_ERR(NULL, "qedf is NULL.\n");
		goto out;
	}

	/* Set unloading bit on vport qedf_ctx to prevent more I/O */
	set_bit(QEDF_UNLOADING, &qedf->flags);

	mutex_lock(&n_port->lp_mutex);
	list_del(&vn_port->list);
	mutex_unlock(&n_port->lp_mutex);

	fc_fabric_logoff(vn_port);
	fc_lport_destroy(vn_port);

	/* Detach from scsi-ml */
	fc_remove_host(vn_port->host);
	scsi_remove_host(vn_port->host);

	/*
	 * Only try to release the exchange manager if the vn_port
	 * configuration is complete.
	 */
	if (vn_port->state == LPORT_ST_READY)
		fc_exch_mgr_free(vn_port);

	/* Free memory used by statistical counters */
	fc_lport_free_stats(vn_port);

	/* Release Scsi_Host */
	if (vn_port->host)
		scsi_host_put(vn_port->host);

out:
	return 0;
}

static int qedf_vport_disable(struct fc_vport *vport, bool disable)
{
	struct fc_lport *lport = vport->dd_data;

	if (disable) {
		fc_vport_set_state(vport, FC_VPORT_DISABLED);
		fc_fabric_logoff(lport);
	} else {
		lport->boot_time = jiffies;
		fc_fabric_login(lport);
		fc_vport_setlink(lport);
	}
	return 0;
}

/*
 * During removal we need to wait for all the vports associated with a port
 * to be destroyed so we avoid a race condition where libfc is still trying
 * to reap vports while the driver remove function has already reaped the
 * driver contexts associated with the physical port.
 */
static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
{
	struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);

	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
	    "Entered.\n");
	while (fc_host->npiv_vports_inuse > 0) {
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
		    "Waiting for all vports to be reaped.\n");
		msleep(1000);
	}
}

/**
 * qedf_fcoe_reset - Resets the fcoe
 *
 * @shost: shost the reset is from
 *
 * Returns: always 0
 */
static int qedf_fcoe_reset(struct Scsi_Host *shost)
{
	struct fc_lport *lport = shost_priv(shost);

	qedf_ctx_soft_reset(lport);
	return 0;
}

static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
	*shost)
{
	struct fc_host_statistics *qedf_stats;
	struct fc_lport *lport = shost_priv(shost);
	struct qedf_ctx *qedf = lport_priv(lport);
	struct qed_fcoe_stats *fw_fcoe_stats;

	qedf_stats = fc_get_host_stats(shost);

	/* We don't collect offload stats for specific NPIV ports */
	if (lport->vport)
		goto out;

	fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
	if (!fw_fcoe_stats) {
		QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
		    "fw_fcoe_stats.\n");
		goto out;
	}

	mutex_lock(&qedf->stats_mutex);

	/* Query firmware for offload stats */
	qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);

	/*
	 * The expectation is that we add our offload stats to the stats
	 * being maintained by libfc each time the fc_get_host_status callback
	 * is invoked. The additions are not carried over for each call to
	 * the fc_get_host_stats callback.
	 */
	qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
	    fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
	    fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
	qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
	    fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
	    fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
	qedf_stats->fcp_input_megabytes +=
	    do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
	qedf_stats->fcp_output_megabytes +=
	    do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
	qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
	qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
	qedf_stats->invalid_crc_count +=
	    fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
	qedf_stats->dumped_frames =
	    fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
	qedf_stats->error_frames +=
	    fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
	qedf_stats->fcp_input_requests += qedf->input_requests;
	qedf_stats->fcp_output_requests += qedf->output_requests;
	qedf_stats->fcp_control_requests += qedf->control_requests;
	qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
	qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;

	mutex_unlock(&qedf->stats_mutex);
	kfree(fw_fcoe_stats);
out:
	return qedf_stats;
}

static struct fc_function_template qedf_fc_transport_fn = {
	.show_host_node_name = 1,
	.show_host_port_name = 1,
	.show_host_supported_classes = 1,
	.show_host_supported_fc4s = 1,
	.show_host_active_fc4s = 1,
	.show_host_maxframe_size = 1,

	.show_host_port_id = 1,
	.show_host_supported_speeds = 1,
	.get_host_speed = fc_get_host_speed,
	.show_host_speed = 1,
	.show_host_port_type = 1,
	.get_host_port_state = fc_get_host_port_state,
	.show_host_port_state = 1,
	.show_host_symbolic_name = 1,

	/*
	 * Tell FC transport to allocate enough space to store the backpointer
	 * for the associate qedf_rport struct.
	 */
	.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
				sizeof(struct qedf_rport)),
	.show_rport_maxframe_size = 1,
	.show_rport_supported_classes = 1,
	.show_host_fabric_name = 1,
	.show_starget_node_name = 1,
	.show_starget_port_name = 1,
	.show_starget_port_id = 1,
	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
	.show_rport_dev_loss_tmo = 1,
	.get_fc_host_stats = qedf_fc_get_host_stats,
	.issue_fc_host_lip = qedf_fcoe_reset,
	.vport_create = qedf_vport_create,
	.vport_delete = qedf_vport_destroy,
	.vport_disable = qedf_vport_disable,
	.bsg_request = fc_lport_bsg_request,
};

static struct fc_function_template qedf_fc_vport_transport_fn = {
	.show_host_node_name = 1,
	.show_host_port_name = 1,
	.show_host_supported_classes = 1,
	.show_host_supported_fc4s = 1,
	.show_host_active_fc4s = 1,
	.show_host_maxframe_size = 1,
	.show_host_port_id = 1,
	.show_host_supported_speeds = 1,
	.get_host_speed = fc_get_host_speed,
	.show_host_speed = 1,
	.show_host_port_type = 1,
	.get_host_port_state = fc_get_host_port_state,
	.show_host_port_state = 1,
	.show_host_symbolic_name = 1,
	.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
				sizeof(struct qedf_rport)),
	.show_rport_maxframe_size = 1,
	.show_rport_supported_classes = 1,
	.show_host_fabric_name = 1,
	.show_starget_node_name = 1,
	.show_starget_port_name = 1,
	.show_starget_port_id = 1,
	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
	.show_rport_dev_loss_tmo = 1,
	.get_fc_host_stats = fc_get_host_stats,
	.issue_fc_host_lip = qedf_fcoe_reset,
	.bsg_request = fc_lport_bsg_request,
};

static bool qedf_fp_has_work(struct qedf_fastpath *fp)
{
	struct qedf_ctx *qedf = fp->qedf;
	struct global_queue *que;
	struct qed_sb_info *sb_info = fp->sb_info;
	struct status_block_e4 *sb = sb_info->sb_virt;
	u16 prod_idx;

	/* Get the pointer to the global CQ this completion is on */
	que = qedf->global_queues[fp->sb_id];

	/* Be sure all responses have been written to PI */
	rmb();

	/* Get the current firmware producer index */
	prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];

	return (que->cq_prod_idx != prod_idx);
}

/*
 * Interrupt handler code.
 */

/* Process completion queue and copy CQE contents for deferred processesing
 *
 * Return true if we should wake the I/O thread, false if not.
 */
static bool qedf_process_completions(struct qedf_fastpath *fp)
{
	struct qedf_ctx *qedf = fp->qedf;
	struct qed_sb_info *sb_info = fp->sb_info;
	struct status_block_e4 *sb = sb_info->sb_virt;
	struct global_queue *que;
	u16 prod_idx;
	struct fcoe_cqe *cqe;
	struct qedf_io_work *io_work;
	int num_handled = 0;
	unsigned int cpu;
	struct qedf_ioreq *io_req = NULL;
	u16 xid;
	u16 new_cqes;
	u32 comp_type;

	/* Get the current firmware producer index */
	prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];

	/* Get the pointer to the global CQ this completion is on */
	que = qedf->global_queues[fp->sb_id];

	/* Calculate the amount of new elements since last processing */
	new_cqes = (prod_idx >= que->cq_prod_idx) ?
	    (prod_idx - que->cq_prod_idx) :
	    0x10000 - que->cq_prod_idx + prod_idx;

	/* Save producer index */
	que->cq_prod_idx = prod_idx;

	while (new_cqes) {
		fp->completions++;
		num_handled++;
		cqe = &que->cq[que->cq_cons_idx];

		comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
		    FCOE_CQE_CQE_TYPE_MASK;

		/*
		 * Process unsolicited CQEs directly in the interrupt handler
		 * sine we need the fastpath ID
		 */
		if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
			   "Unsolicated CQE.\n");
			qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
			/*
			 * Don't add a work list item.  Increment consumer
			 * consumer index and move on.
			 */
			goto inc_idx;
		}

		xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
		io_req = &qedf->cmd_mgr->cmds[xid];

		/*
		 * Figure out which percpu thread we should queue this I/O
		 * on.
		 */
		if (!io_req)
			/* If there is not io_req assocated with this CQE
			 * just queue it on CPU 0
			 */
			cpu = 0;
		else {
			cpu = io_req->cpu;
			io_req->int_cpu = smp_processor_id();
		}

		io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
		if (!io_work) {
			QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
				   "work for I/O completion.\n");
			continue;
		}
		memset(io_work, 0, sizeof(struct qedf_io_work));

		INIT_WORK(&io_work->work, qedf_fp_io_handler);

		/* Copy contents of CQE for deferred processing */
		memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));

		io_work->qedf = fp->qedf;
		io_work->fp = NULL; /* Only used for unsolicited frames */

		queue_work_on(cpu, qedf_io_wq, &io_work->work);

inc_idx:
		que->cq_cons_idx++;
		if (que->cq_cons_idx == fp->cq_num_entries)
			que->cq_cons_idx = 0;
		new_cqes--;
	}

	return true;
}


/* MSI-X fastpath handler code */
static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
{
	struct qedf_fastpath *fp = dev_id;

	if (!fp) {
		QEDF_ERR(NULL, "fp is null.\n");
		return IRQ_HANDLED;
	}
	if (!fp->sb_info) {
		QEDF_ERR(NULL, "fp->sb_info in null.");
		return IRQ_HANDLED;
	}

	/*
	 * Disable interrupts for this status block while we process new
	 * completions
	 */
	qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);

	while (1) {
		qedf_process_completions(fp);

		if (qedf_fp_has_work(fp) == 0) {
			/* Update the sb information */
			qed_sb_update_sb_idx(fp->sb_info);

			/* Check for more work */
			rmb();

			if (qedf_fp_has_work(fp) == 0) {
				/* Re-enable interrupts */
				qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
				return IRQ_HANDLED;
			}
		}
	}

	/* Do we ever want to break out of above loop? */
	return IRQ_HANDLED;
}

/* simd handler for MSI/INTa */
static void qedf_simd_int_handler(void *cookie)
{
	/* Cookie is qedf_ctx struct */
	struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;

	QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
}

#define QEDF_SIMD_HANDLER_NUM		0
static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
{
	int i;

	if (qedf->int_info.msix_cnt) {
		for (i = 0; i < qedf->int_info.used_cnt; i++) {
			synchronize_irq(qedf->int_info.msix[i].vector);
			irq_set_affinity_hint(qedf->int_info.msix[i].vector,
			    NULL);
			irq_set_affinity_notifier(qedf->int_info.msix[i].vector,
			    NULL);
			free_irq(qedf->int_info.msix[i].vector,
			    &qedf->fp_array[i]);
		}
	} else
		qed_ops->common->simd_handler_clean(qedf->cdev,
		    QEDF_SIMD_HANDLER_NUM);

	qedf->int_info.used_cnt = 0;
	qed_ops->common->set_fp_int(qedf->cdev, 0);
}

static int qedf_request_msix_irq(struct qedf_ctx *qedf)
{
	int i, rc, cpu;

	cpu = cpumask_first(cpu_online_mask);
	for (i = 0; i < qedf->num_queues; i++) {
		rc = request_irq(qedf->int_info.msix[i].vector,
		    qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]);

		if (rc) {
			QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
			qedf_sync_free_irqs(qedf);
			return rc;
		}

		qedf->int_info.used_cnt++;
		rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector,
		    get_cpu_mask(cpu));
		cpu = cpumask_next(cpu, cpu_online_mask);
	}

	return 0;
}

static int qedf_setup_int(struct qedf_ctx *qedf)
{
	int rc = 0;

	/*
	 * Learn interrupt configuration
	 */
	rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
	if (rc <= 0)
		return 0;

	rc  = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
	if (rc)
		return 0;

	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
		   "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
		   num_online_cpus());

	if (qedf->int_info.msix_cnt)
		return qedf_request_msix_irq(qedf);

	qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
	    QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
	qedf->int_info.used_cnt = 1;

	QEDF_ERR(&qedf->dbg_ctx, "Only MSI-X supported. Failing probe.\n");
	return -EINVAL;
}

/* Main function for libfc frame reception */
static void qedf_recv_frame(struct qedf_ctx *qedf,
	struct sk_buff *skb)
{
	u32 fr_len;
	struct fc_lport *lport;
	struct fc_frame_header *fh;
	struct fcoe_crc_eof crc_eof;
	struct fc_frame *fp;
	u8 *mac = NULL;
	u8 *dest_mac = NULL;
	struct fcoe_hdr *hp;
	struct qedf_rport *fcport;
	struct fc_lport *vn_port;
	u32 f_ctl;

	lport = qedf->lport;
	if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
		QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
		kfree_skb(skb);
		return;
	}

	if (skb_is_nonlinear(skb))
		skb_linearize(skb);
	mac = eth_hdr(skb)->h_source;
	dest_mac = eth_hdr(skb)->h_dest;

	/* Pull the header */
	hp = (struct fcoe_hdr *)skb->data;
	fh = (struct fc_frame_header *) skb_transport_header(skb);
	skb_pull(skb, sizeof(struct fcoe_hdr));
	fr_len = skb->len - sizeof(struct fcoe_crc_eof);

	fp = (struct fc_frame *)skb;
	fc_frame_init(fp);
	fr_dev(fp) = lport;
	fr_sof(fp) = hp->fcoe_sof;
	if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
		kfree_skb(skb);
		return;
	}
	fr_eof(fp) = crc_eof.fcoe_eof;
	fr_crc(fp) = crc_eof.fcoe_crc32;
	if (pskb_trim(skb, fr_len)) {
		kfree_skb(skb);
		return;
	}

	fh = fc_frame_header_get(fp);

	/*
	 * Invalid frame filters.
	 */

	if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
	    fh->fh_type == FC_TYPE_FCP) {
		/* Drop FCP data. We dont this in L2 path */
		kfree_skb(skb);
		return;
	}
	if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
	    fh->fh_type == FC_TYPE_ELS) {
		switch (fc_frame_payload_op(fp)) {
		case ELS_LOGO:
			if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
				/* drop non-FIP LOGO */
				kfree_skb(skb);
				return;
			}
			break;
		}
	}

	if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
		/* Drop incoming ABTS */
		kfree_skb(skb);
		return;
	}

	if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
		    "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
		kfree_skb(skb);
		return;
	}

	if (qedf->ctlr.state) {
		if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
			    "Wrong source address: mac:%pM dest_addr:%pM.\n",
			    mac, qedf->ctlr.dest_addr);
			kfree_skb(skb);
			return;
		}
	}

	vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));

	/*
	 * If the destination ID from the frame header does not match what we
	 * have on record for lport and the search for a NPIV port came up
	 * empty then this is not addressed to our port so simply drop it.
	 */
	if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
		    "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
		    lport->port_id, ntoh24(fh->fh_d_id));
		kfree_skb(skb);
		return;
	}

	f_ctl = ntoh24(fh->fh_f_ctl);
	if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
	    (f_ctl & FC_FC_EX_CTX)) {
		/* Drop incoming ABTS response that has both SEQ/EX CTX set */
		kfree_skb(skb);
		return;
	}

	/*
	 * If a connection is uploading, drop incoming FCoE frames as there
	 * is a small window where we could try to return a frame while libfc
	 * is trying to clean things up.
	 */

	/* Get fcport associated with d_id if it exists */
	fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));

	if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
	    &fcport->flags)) {
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
		    "Connection uploading, dropping fp=%p.\n", fp);
		kfree_skb(skb);
		return;
	}

	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
	    "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
	    ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
	    fh->fh_type);
	if (qedf_dump_frames)
		print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
		    1, skb->data, skb->len, false);
	fc_exch_recv(lport, fp);
}

static void qedf_ll2_process_skb(struct work_struct *work)
{
	struct qedf_skb_work *skb_work =
	    container_of(work, struct qedf_skb_work, work);
	struct qedf_ctx *qedf = skb_work->qedf;
	struct sk_buff *skb = skb_work->skb;
	struct ethhdr *eh;

	if (!qedf) {
		QEDF_ERR(NULL, "qedf is NULL\n");
		goto err_out;
	}

	eh = (struct ethhdr *)skb->data;

	/* Undo VLAN encapsulation */
	if (eh->h_proto == htons(ETH_P_8021Q)) {
		memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
		eh = skb_pull(skb, VLAN_HLEN);
		skb_reset_mac_header(skb);
	}

	/*
	 * Process either a FIP frame or FCoE frame based on the
	 * protocol value.  If it's not either just drop the
	 * frame.
	 */
	if (eh->h_proto == htons(ETH_P_FIP)) {
		qedf_fip_recv(qedf, skb);
		goto out;
	} else if (eh->h_proto == htons(ETH_P_FCOE)) {
		__skb_pull(skb, ETH_HLEN);
		qedf_recv_frame(qedf, skb);
		goto out;
	} else
		goto err_out;

err_out:
	kfree_skb(skb);
out:
	kfree(skb_work);
	return;
}

static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
	u32 arg1, u32 arg2)
{
	struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
	struct qedf_skb_work *skb_work;

	skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
	if (!skb_work) {
		QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
			   "dropping frame.\n");
		kfree_skb(skb);
		return 0;
	}

	INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
	skb_work->skb = skb;
	skb_work->qedf = qedf;
	queue_work(qedf->ll2_recv_wq, &skb_work->work);

	return 0;
}

static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
	.rx_cb = qedf_ll2_rx,
	.tx_cb = NULL,
};

/* Main thread to process I/O completions */
void qedf_fp_io_handler(struct work_struct *work)
{
	struct qedf_io_work *io_work =
	    container_of(work, struct qedf_io_work, work);
	u32 comp_type;

	/*
	 * Deferred part of unsolicited CQE sends
	 * frame to libfc.
	 */
	comp_type = (io_work->cqe.cqe_data >>
	    FCOE_CQE_CQE_TYPE_SHIFT) &
	    FCOE_CQE_CQE_TYPE_MASK;
	if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
	    io_work->fp)
		fc_exch_recv(io_work->qedf->lport, io_work->fp);
	else
		qedf_process_cqe(io_work->qedf, &io_work->cqe);

	kfree(io_work);
}

static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
	struct qed_sb_info *sb_info, u16 sb_id)
{
	struct status_block_e4 *sb_virt;
	dma_addr_t sb_phys;
	int ret;

	sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
	    sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL);

	if (!sb_virt) {
		QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed "
			  "for id = %d.\n", sb_id);
		return -ENOMEM;
	}

	ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
	    sb_id, QED_SB_TYPE_STORAGE);

	if (ret) {
		QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization "
			  "failed for id = %d.\n", sb_id);
		return ret;
	}

	return 0;
}

static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
{
	if (sb_info->sb_virt)
		dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
		    (void *)sb_info->sb_virt, sb_info->sb_phys);
}

static void qedf_destroy_sb(struct qedf_ctx *qedf)
{
	int id;
	struct qedf_fastpath *fp = NULL;

	for (id = 0; id < qedf->num_queues; id++) {
		fp = &(qedf->fp_array[id]);
		if (fp->sb_id == QEDF_SB_ID_NULL)
			break;
		qedf_free_sb(qedf, fp->sb_info);
		kfree(fp->sb_info);
	}
	kfree(qedf->fp_array);
}

static int qedf_prepare_sb(struct qedf_ctx *qedf)
{
	int id;
	struct qedf_fastpath *fp;
	int ret;

	qedf->fp_array =
	    kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
		GFP_KERNEL);

	if (!qedf->fp_array) {
		QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
			  "failed.\n");
		return -ENOMEM;
	}

	for (id = 0; id < qedf->num_queues; id++) {
		fp = &(qedf->fp_array[id]);
		fp->sb_id = QEDF_SB_ID_NULL;
		fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
		if (!fp->sb_info) {
			QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
				  "allocation failed.\n");
			goto err;
		}
		ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
		if (ret) {
			QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
				  "initialization failed.\n");
			goto err;
		}
		fp->sb_id = id;
		fp->qedf = qedf;
		fp->cq_num_entries =
		    qedf->global_queues[id]->cq_mem_size /
		    sizeof(struct fcoe_cqe);
	}
err:
	return 0;
}

void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
{
	u16 xid;
	struct qedf_ioreq *io_req;
	struct qedf_rport *fcport;
	u32 comp_type;

	comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
	    FCOE_CQE_CQE_TYPE_MASK;

	xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
	io_req = &qedf->cmd_mgr->cmds[xid];

	/* Completion not for a valid I/O anymore so just return */
	if (!io_req)
		return;

	fcport = io_req->fcport;

	if (fcport == NULL) {
		QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n");
		return;
	}

	/*
	 * Check that fcport is offloaded.  If it isn't then the spinlock
	 * isn't valid and shouldn't be taken. We should just return.
	 */
	if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
		QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n");
		return;
	}


	switch (comp_type) {
	case FCOE_GOOD_COMPLETION_CQE_TYPE:
		atomic_inc(&fcport->free_sqes);
		switch (io_req->cmd_type) {
		case QEDF_SCSI_CMD:
			qedf_scsi_completion(qedf, cqe, io_req);
			break;
		case QEDF_ELS:
			qedf_process_els_compl(qedf, cqe, io_req);
			break;
		case QEDF_TASK_MGMT_CMD:
			qedf_process_tmf_compl(qedf, cqe, io_req);
			break;
		case QEDF_SEQ_CLEANUP:
			qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
			break;
		}
		break;
	case FCOE_ERROR_DETECTION_CQE_TYPE:
		atomic_inc(&fcport->free_sqes);
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
		    "Error detect CQE.\n");
		qedf_process_error_detect(qedf, cqe, io_req);
		break;
	case FCOE_EXCH_CLEANUP_CQE_TYPE:
		atomic_inc(&fcport->free_sqes);
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
		    "Cleanup CQE.\n");
		qedf_process_cleanup_compl(qedf, cqe, io_req);
		break;
	case FCOE_ABTS_CQE_TYPE:
		atomic_inc(&fcport->free_sqes);
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
		    "Abort CQE.\n");
		qedf_process_abts_compl(qedf, cqe, io_req);
		break;
	case FCOE_DUMMY_CQE_TYPE:
		atomic_inc(&fcport->free_sqes);
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
		    "Dummy CQE.\n");
		break;
	case FCOE_LOCAL_COMP_CQE_TYPE:
		atomic_inc(&fcport->free_sqes);
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
		    "Local completion CQE.\n");
		break;
	case FCOE_WARNING_CQE_TYPE:
		atomic_inc(&fcport->free_sqes);
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
		    "Warning CQE.\n");
		qedf_process_warning_compl(qedf, cqe, io_req);
		break;
	case MAX_FCOE_CQE_TYPE:
		atomic_inc(&fcport->free_sqes);
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
		    "Max FCoE CQE.\n");
		break;
	default:
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
		    "Default CQE.\n");
		break;
	}
}

static void qedf_free_bdq(struct qedf_ctx *qedf)
{
	int i;

	if (qedf->bdq_pbl_list)
		dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
		    qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);

	if (qedf->bdq_pbl)
		dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
		    qedf->bdq_pbl, qedf->bdq_pbl_dma);

	for (i = 0; i < QEDF_BDQ_SIZE; i++) {
		if (qedf->bdq[i].buf_addr) {
			dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
			    qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
		}
	}
}

static void qedf_free_global_queues(struct qedf_ctx *qedf)
{
	int i;
	struct global_queue **gl = qedf->global_queues;

	for (i = 0; i < qedf->num_queues; i++) {
		if (!gl[i])
			continue;

		if (gl[i]->cq)
			dma_free_coherent(&qedf->pdev->dev,
			    gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
		if (gl[i]->cq_pbl)
			dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
			    gl[i]->cq_pbl, gl[i]->cq_pbl_dma);

		kfree(gl[i]);
	}

	qedf_free_bdq(qedf);
}

static int qedf_alloc_bdq(struct qedf_ctx *qedf)
{
	int i;
	struct scsi_bd *pbl;
	u64 *list;
	dma_addr_t page;

	/* Alloc dma memory for BDQ buffers */
	for (i = 0; i < QEDF_BDQ_SIZE; i++) {
		qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
		    QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
		if (!qedf->bdq[i].buf_addr) {
			QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
			    "buffer %d.\n", i);
			return -ENOMEM;
		}
	}

	/* Alloc dma memory for BDQ page buffer list */
	qedf->bdq_pbl_mem_size =
	    QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
	qedf->bdq_pbl_mem_size =
	    ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);

	qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
	    qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
	if (!qedf->bdq_pbl) {
		QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
		return -ENOMEM;
	}

	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
		  "BDQ PBL addr=0x%p dma=%pad\n",
		  qedf->bdq_pbl, &qedf->bdq_pbl_dma);

	/*
	 * Populate BDQ PBL with physical and virtual address of individual
	 * BDQ buffers
	 */
	pbl = (struct scsi_bd *)qedf->bdq_pbl;
	for (i = 0; i < QEDF_BDQ_SIZE; i++) {
		pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
		pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
		pbl->opaque.fcoe_opaque.hi = 0;
		/* Opaque lo data is an index into the BDQ array */
		pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
		pbl++;
	}

	/* Allocate list of PBL pages */
	qedf->bdq_pbl_list = dma_zalloc_coherent(&qedf->pdev->dev,
	    QEDF_PAGE_SIZE, &qedf->bdq_pbl_list_dma, GFP_KERNEL);
	if (!qedf->bdq_pbl_list) {
		QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
		return -ENOMEM;
	}

	/*
	 * Now populate PBL list with pages that contain pointers to the
	 * individual buffers.
	 */
	qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
	    QEDF_PAGE_SIZE;
	list = (u64 *)qedf->bdq_pbl_list;
	page = qedf->bdq_pbl_list_dma;
	for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
		*list = qedf->bdq_pbl_dma;
		list++;
		page += QEDF_PAGE_SIZE;
	}

	return 0;
}

static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
{
	u32 *list;
	int i;
	int status = 0, rc;
	u32 *pbl;
	dma_addr_t page;
	int num_pages;

	/* Allocate and map CQs, RQs */
	/*
	 * Number of global queues (CQ / RQ). This should
	 * be <= number of available MSIX vectors for the PF
	 */
	if (!qedf->num_queues) {
		QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
		return 1;
	}

	/*
	 * Make sure we allocated the PBL that will contain the physical
	 * addresses of our queues
	 */
	if (!qedf->p_cpuq) {
		status = 1;
		goto mem_alloc_failure;
	}

	qedf->global_queues = kzalloc((sizeof(struct global_queue *)
	    * qedf->num_queues), GFP_KERNEL);
	if (!qedf->global_queues) {
		QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
			  "queues array ptr memory\n");
		return -ENOMEM;
	}
	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
		   "qedf->global_queues=%p.\n", qedf->global_queues);

	/* Allocate DMA coherent buffers for BDQ */
	rc = qedf_alloc_bdq(qedf);
	if (rc)
		goto mem_alloc_failure;

	/* Allocate a CQ and an associated PBL for each MSI-X vector */
	for (i = 0; i < qedf->num_queues; i++) {
		qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
		    GFP_KERNEL);
		if (!qedf->global_queues[i]) {
			QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
				   "global queue %d.\n", i);
			status = -ENOMEM;
			goto mem_alloc_failure;
		}

		qedf->global_queues[i]->cq_mem_size =
		    FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
		qedf->global_queues[i]->cq_mem_size =
		    ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);

		qedf->global_queues[i]->cq_pbl_size =
		    (qedf->global_queues[i]->cq_mem_size /
		    PAGE_SIZE) * sizeof(void *);
		qedf->global_queues[i]->cq_pbl_size =
		    ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);

		qedf->global_queues[i]->cq =
		    dma_zalloc_coherent(&qedf->pdev->dev,
			qedf->global_queues[i]->cq_mem_size,
			&qedf->global_queues[i]->cq_dma, GFP_KERNEL);

		if (!qedf->global_queues[i]->cq) {
			QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
			status = -ENOMEM;
			goto mem_alloc_failure;
		}

		qedf->global_queues[i]->cq_pbl =
		    dma_zalloc_coherent(&qedf->pdev->dev,
			qedf->global_queues[i]->cq_pbl_size,
			&qedf->global_queues[i]->cq_pbl_dma, GFP_KERNEL);

		if (!qedf->global_queues[i]->cq_pbl) {
			QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
			status = -ENOMEM;
			goto mem_alloc_failure;
		}

		/* Create PBL */
		num_pages = qedf->global_queues[i]->cq_mem_size /
		    QEDF_PAGE_SIZE;
		page = qedf->global_queues[i]->cq_dma;
		pbl = (u32 *)qedf->global_queues[i]->cq_pbl;

		while (num_pages--) {
			*pbl = U64_LO(page);
			pbl++;
			*pbl = U64_HI(page);
			pbl++;
			page += QEDF_PAGE_SIZE;
		}
		/* Set the initial consumer index for cq */
		qedf->global_queues[i]->cq_cons_idx = 0;
	}

	list = (u32 *)qedf->p_cpuq;

	/*
	 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
	 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
	 * to the physical address which contains an array of pointers to
	 * the physical addresses of the specific queue pages.
	 */
	for (i = 0; i < qedf->num_queues; i++) {
		*list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
		list++;
		*list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
		list++;
		*list = U64_LO(0);
		list++;
		*list = U64_HI(0);
		list++;
	}

	return 0;

mem_alloc_failure:
	qedf_free_global_queues(qedf);
	return status;
}

static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
{
	u8 sq_num_pbl_pages;
	u32 sq_mem_size;
	u32 cq_mem_size;
	u32 cq_num_entries;
	int rval;

	/*
	 * The number of completion queues/fastpath interrupts/status blocks
	 * we allocation is the minimum off:
	 *
	 * Number of CPUs
	 * Number allocated by qed for our PCI function
	 */
	qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);

	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
		   qedf->num_queues);

	qedf->p_cpuq = pci_alloc_consistent(qedf->pdev,
	    qedf->num_queues * sizeof(struct qedf_glbl_q_params),
	    &qedf->hw_p_cpuq);

	if (!qedf->p_cpuq) {
		QEDF_ERR(&(qedf->dbg_ctx), "pci_alloc_consistent failed.\n");
		return 1;
	}

	rval = qedf_alloc_global_queues(qedf);
	if (rval) {
		QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
			  "failed.\n");
		return 1;
	}

	/* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
	sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
	sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
	sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);

	/* Calculate CQ num entries */
	cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
	cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
	cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);

	memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));

	/* Setup the value for fcoe PF */
	qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
	qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
	qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
	    (u64)qedf->hw_p_cpuq;
	qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;

	qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;

	qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
	qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;

	/* log_page_size: 12 for 4KB pages */
	qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);

	qedf->pf_params.fcoe_pf_params.mtu = 9000;
	qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
	qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;

	/* BDQ address and size */
	qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
	    qedf->bdq_pbl_list_dma;
	qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
	    qedf->bdq_pbl_list_num_entries;
	qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;

	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
	    "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
	    qedf->bdq_pbl_list,
	    qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
	    qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);

	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
	    "cq_num_entries=%d.\n",
	    qedf->pf_params.fcoe_pf_params.cq_num_entries);

	return 0;
}

/* Free DMA coherent memory for array of queue pointers we pass to qed */
static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
{
	size_t size = 0;

	if (qedf->p_cpuq) {
		size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
		pci_free_consistent(qedf->pdev, size, qedf->p_cpuq,
		    qedf->hw_p_cpuq);
	}

	qedf_free_global_queues(qedf);

	if (qedf->global_queues)
		kfree(qedf->global_queues);
}

/*
 * PCI driver functions
 */

static const struct pci_device_id qedf_pci_tbl[] = {
	{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
	{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
	{0}
};
MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);

static struct pci_driver qedf_pci_driver = {
	.name = QEDF_MODULE_NAME,
	.id_table = qedf_pci_tbl,
	.probe = qedf_probe,
	.remove = qedf_remove,
};

static int __qedf_probe(struct pci_dev *pdev, int mode)
{
	int rc = -EINVAL;
	struct fc_lport *lport;
	struct qedf_ctx *qedf;
	struct Scsi_Host *host;
	bool is_vf = false;
	struct qed_ll2_params params;
	char host_buf[20];
	struct qed_link_params link_params;
	int status;
	void *task_start, *task_end;
	struct qed_slowpath_params slowpath_params;
	struct qed_probe_params qed_params;
	u16 tmp;

	/*
	 * When doing error recovery we didn't reap the lport so don't try
	 * to reallocate it.
	 */
	if (mode != QEDF_MODE_RECOVERY) {
		lport = libfc_host_alloc(&qedf_host_template,
		    sizeof(struct qedf_ctx));

		if (!lport) {
			QEDF_ERR(NULL, "Could not allocate lport.\n");
			rc = -ENOMEM;
			goto err0;
		}

		/* Initialize qedf_ctx */
		qedf = lport_priv(lport);
		qedf->lport = lport;
		qedf->ctlr.lp = lport;
		qedf->pdev = pdev;
		qedf->dbg_ctx.pdev = pdev;
		qedf->dbg_ctx.host_no = lport->host->host_no;
		spin_lock_init(&qedf->hba_lock);
		INIT_LIST_HEAD(&qedf->fcports);
		qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
		atomic_set(&qedf->num_offloads, 0);
		qedf->stop_io_on_error = false;
		pci_set_drvdata(pdev, qedf);
		init_completion(&qedf->fipvlan_compl);
		mutex_init(&qedf->stats_mutex);

		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
		   "QLogic FastLinQ FCoE Module qedf %s, "
		   "FW %d.%d.%d.%d\n", QEDF_VERSION,
		   FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
		   FW_ENGINEERING_VERSION);
	} else {
		/* Init pointers during recovery */
		qedf = pci_get_drvdata(pdev);
		lport = qedf->lport;
	}

	host = lport->host;

	/* Allocate mempool for qedf_io_work structs */
	qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
	    qedf_io_work_cache);
	if (qedf->io_mempool == NULL) {
		QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
		goto err1;
	}
	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
	    qedf->io_mempool);

	sprintf(host_buf, "qedf_%u_link",
	    qedf->lport->host->host_no);
	qedf->link_update_wq = create_workqueue(host_buf);
	INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
	INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
	INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
	qedf->fipvlan_retries = qedf_fipvlan_retries;
	/* Set a default prio in case DCBX doesn't converge */
	if (qedf_default_prio > -1) {
		/*
		 * This is the case where we pass a modparam in so we want to
		 * honor it even if dcbx doesn't converge.
		 */
		qedf->prio = qedf_default_prio;
	} else
		qedf->prio = QEDF_DEFAULT_PRIO;

	/*
	 * Common probe. Takes care of basic hardware init and pci_*
	 * functions.
	 */
	memset(&qed_params, 0, sizeof(qed_params));
	qed_params.protocol = QED_PROTOCOL_FCOE;
	qed_params.dp_module = qedf_dp_module;
	qed_params.dp_level = qedf_dp_level;
	qed_params.is_vf = is_vf;
	qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
	if (!qedf->cdev) {
		rc = -ENODEV;
		goto err1;
	}

	/* Learn information crucial for qedf to progress */
	rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
	if (rc) {
		QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
		goto err1;
	}

	/* queue allocation code should come here
	 * order should be
	 * 	slowpath_start
	 * 	status block allocation
	 *	interrupt registration (to get min number of queues)
	 *	set_fcoe_pf_param
	 *	qed_sp_fcoe_func_start
	 */
	rc = qedf_set_fcoe_pf_param(qedf);
	if (rc) {
		QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
		goto err2;
	}
	qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);

	/* Record BDQ producer doorbell addresses */
	qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
	qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
	    "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
	    qedf->bdq_secondary_prod);

	qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);

	rc = qedf_prepare_sb(qedf);
	if (rc) {

		QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
		goto err2;
	}

	/* Start the Slowpath-process */
	slowpath_params.int_mode = QED_INT_MODE_MSIX;
	slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
	slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
	slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
	slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
	strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
	rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
	if (rc) {
		QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
		goto err2;
	}

	/*
	 * update_pf_params needs to be called before and after slowpath
	 * start
	 */
	qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);

	/* Setup interrupts */
	rc = qedf_setup_int(qedf);
	if (rc)
		goto err3;

	rc = qed_ops->start(qedf->cdev, &qedf->tasks);
	if (rc) {
		QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
		goto err4;
	}
	task_start = qedf_get_task_mem(&qedf->tasks, 0);
	task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
		   "end=%p block_size=%u.\n", task_start, task_end,
		   qedf->tasks.size);

	/*
	 * We need to write the number of BDs in the BDQ we've preallocated so
	 * the f/w will do a prefetch and we'll get an unsolicited CQE when a
	 * packet arrives.
	 */
	qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
	    "Writing %d to primary and secondary BDQ doorbell registers.\n",
	    qedf->bdq_prod_idx);
	writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
	tmp = readw(qedf->bdq_primary_prod);
	writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
	tmp = readw(qedf->bdq_secondary_prod);

	qed_ops->common->set_power_state(qedf->cdev, PCI_D0);

	/* Now that the dev_info struct has been filled in set the MAC
	 * address
	 */
	ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
		   qedf->mac);

	/*
	 * Set the WWNN and WWPN in the following way:
	 *
	 * If the info we get from qed is non-zero then use that to set the
	 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
	 * on the MAC address.
	 */
	if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
		    "Setting WWPN and WWNN from qed dev_info.\n");
		qedf->wwnn = qedf->dev_info.wwnn;
		qedf->wwpn = qedf->dev_info.wwpn;
	} else {
		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
		    "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
		qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
		qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
	}
	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,  "WWNN=%016llx "
		   "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);

	sprintf(host_buf, "host_%d", host->host_no);
	qed_ops->common->set_name(qedf->cdev, host_buf);


	/* Set xid max values */
	qedf->max_scsi_xid = QEDF_MAX_SCSI_XID;
	qedf->max_els_xid = QEDF_MAX_ELS_XID;

	/* Allocate cmd mgr */
	qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
	if (!qedf->cmd_mgr) {
		QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
		rc = -ENOMEM;
		goto err5;
	}

	if (mode != QEDF_MODE_RECOVERY) {
		host->transportt = qedf_fc_transport_template;
		host->can_queue = QEDF_MAX_ELS_XID;
		host->max_lun = qedf_max_lun;
		host->max_cmd_len = QEDF_MAX_CDB_LEN;
		rc = scsi_add_host(host, &pdev->dev);
		if (rc)
			goto err6;
	}

	memset(&params, 0, sizeof(params));
	params.mtu = 9000;
	ether_addr_copy(params.ll2_mac_address, qedf->mac);

	/* Start LL2 processing thread */
	snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
	qedf->ll2_recv_wq =
		create_workqueue(host_buf);
	if (!qedf->ll2_recv_wq) {
		QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
		rc = -ENOMEM;
		goto err7;
	}

#ifdef CONFIG_DEBUG_FS
	qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
			    qedf_dbg_fops);
#endif

	/* Start LL2 */
	qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
	rc = qed_ops->ll2->start(qedf->cdev, &params);
	if (rc) {
		QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
		goto err7;
	}
	set_bit(QEDF_LL2_STARTED, &qedf->flags);

	/* Set initial FIP/FCoE VLAN to NULL */
	qedf->vlan_id = 0;

	/*
	 * No need to setup fcoe_ctlr or fc_lport objects during recovery since
	 * they were not reaped during the unload process.
	 */
	if (mode != QEDF_MODE_RECOVERY) {
		/* Setup imbedded fcoe controller */
		qedf_fcoe_ctlr_setup(qedf);

		/* Setup lport */
		rc = qedf_lport_setup(qedf);
		if (rc) {
			QEDF_ERR(&(qedf->dbg_ctx),
			    "qedf_lport_setup failed.\n");
			goto err7;
		}
	}

	sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
	qedf->timer_work_queue =
		create_workqueue(host_buf);
	if (!qedf->timer_work_queue) {
		QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
			  "workqueue.\n");
		rc = -ENOMEM;
		goto err7;
	}

	/* DPC workqueue is not reaped during recovery unload */
	if (mode != QEDF_MODE_RECOVERY) {
		sprintf(host_buf, "qedf_%u_dpc",
		    qedf->lport->host->host_no);
		qedf->dpc_wq = create_workqueue(host_buf);
	}

	/*
	 * GRC dump and sysfs parameters are not reaped during the recovery
	 * unload process.
	 */
	if (mode != QEDF_MODE_RECOVERY) {
		qedf->grcdump_size =
		    qed_ops->common->dbg_all_data_size(qedf->cdev);
		if (qedf->grcdump_size) {
			rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
			    qedf->grcdump_size);
			if (rc) {
				QEDF_ERR(&(qedf->dbg_ctx),
				    "GRC Dump buffer alloc failed.\n");
				qedf->grcdump = NULL;
			}

			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
			    "grcdump: addr=%p, size=%u.\n",
			    qedf->grcdump, qedf->grcdump_size);
		}
		qedf_create_sysfs_ctx_attr(qedf);

		/* Initialize I/O tracing for this adapter */
		spin_lock_init(&qedf->io_trace_lock);
		qedf->io_trace_idx = 0;
	}

	init_completion(&qedf->flogi_compl);

	status = qed_ops->common->update_drv_state(qedf->cdev, true);
	if (status)
		QEDF_ERR(&(qedf->dbg_ctx),
			"Failed to send drv state to MFW.\n");

	memset(&link_params, 0, sizeof(struct qed_link_params));
	link_params.link_up = true;
	status = qed_ops->common->set_link(qedf->cdev, &link_params);
	if (status)
		QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");

	/* Start/restart discovery */
	if (mode == QEDF_MODE_RECOVERY)
		fcoe_ctlr_link_up(&qedf->ctlr);
	else
		fc_fabric_login(lport);

	/* All good */
	return 0;

err7:
	if (qedf->ll2_recv_wq)
		destroy_workqueue(qedf->ll2_recv_wq);
	fc_remove_host(qedf->lport->host);
	scsi_remove_host(qedf->lport->host);
#ifdef CONFIG_DEBUG_FS
	qedf_dbg_host_exit(&(qedf->dbg_ctx));
#endif
err6:
	qedf_cmd_mgr_free(qedf->cmd_mgr);
err5:
	qed_ops->stop(qedf->cdev);
err4:
	qedf_free_fcoe_pf_param(qedf);
	qedf_sync_free_irqs(qedf);
err3:
	qed_ops->common->slowpath_stop(qedf->cdev);
err2:
	qed_ops->common->remove(qedf->cdev);
err1:
	scsi_host_put(lport->host);
err0:
	return rc;
}

static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
	return __qedf_probe(pdev, QEDF_MODE_NORMAL);
}

static void __qedf_remove(struct pci_dev *pdev, int mode)
{
	struct qedf_ctx *qedf;
	int rc;

	if (!pdev) {
		QEDF_ERR(NULL, "pdev is NULL.\n");
		return;
	}

	qedf = pci_get_drvdata(pdev);

	/*
	 * Prevent race where we're in board disable work and then try to
	 * rmmod the module.
	 */
	if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
		QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
		return;
	}

	if (mode != QEDF_MODE_RECOVERY)
		set_bit(QEDF_UNLOADING, &qedf->flags);

	/* Logoff the fabric to upload all connections */
	if (mode == QEDF_MODE_RECOVERY)
		fcoe_ctlr_link_down(&qedf->ctlr);
	else
		fc_fabric_logoff(qedf->lport);
	qedf_wait_for_upload(qedf);

#ifdef CONFIG_DEBUG_FS
	qedf_dbg_host_exit(&(qedf->dbg_ctx));
#endif

	/* Stop any link update handling */
	cancel_delayed_work_sync(&qedf->link_update);
	destroy_workqueue(qedf->link_update_wq);
	qedf->link_update_wq = NULL;

	if (qedf->timer_work_queue)
		destroy_workqueue(qedf->timer_work_queue);

	/* Stop Light L2 */
	clear_bit(QEDF_LL2_STARTED, &qedf->flags);
	qed_ops->ll2->stop(qedf->cdev);
	if (qedf->ll2_recv_wq)
		destroy_workqueue(qedf->ll2_recv_wq);

	/* Stop fastpath */
	qedf_sync_free_irqs(qedf);
	qedf_destroy_sb(qedf);

	/*
	 * During recovery don't destroy OS constructs that represent the
	 * physical port.
	 */
	if (mode != QEDF_MODE_RECOVERY) {
		qedf_free_grc_dump_buf(&qedf->grcdump);
		qedf_remove_sysfs_ctx_attr(qedf);

		/* Remove all SCSI/libfc/libfcoe structures */
		fcoe_ctlr_destroy(&qedf->ctlr);
		fc_lport_destroy(qedf->lport);
		fc_remove_host(qedf->lport->host);
		scsi_remove_host(qedf->lport->host);
	}

	qedf_cmd_mgr_free(qedf->cmd_mgr);

	if (mode != QEDF_MODE_RECOVERY) {
		fc_exch_mgr_free(qedf->lport);
		fc_lport_free_stats(qedf->lport);

		/* Wait for all vports to be reaped */
		qedf_wait_for_vport_destroy(qedf);
	}

	/*
	 * Now that all connections have been uploaded we can stop the
	 * rest of the qed operations
	 */
	qed_ops->stop(qedf->cdev);

	if (mode != QEDF_MODE_RECOVERY) {
		if (qedf->dpc_wq) {
			/* Stop general DPC handling */
			destroy_workqueue(qedf->dpc_wq);
			qedf->dpc_wq = NULL;
		}
	}

	/* Final shutdown for the board */
	qedf_free_fcoe_pf_param(qedf);
	if (mode != QEDF_MODE_RECOVERY) {
		qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
		pci_set_drvdata(pdev, NULL);
	}

	rc = qed_ops->common->update_drv_state(qedf->cdev, false);
	if (rc)
		QEDF_ERR(&(qedf->dbg_ctx),
			"Failed to send drv state to MFW.\n");

	qed_ops->common->slowpath_stop(qedf->cdev);
	qed_ops->common->remove(qedf->cdev);

	mempool_destroy(qedf->io_mempool);

	/* Only reap the Scsi_host on a real removal */
	if (mode != QEDF_MODE_RECOVERY)
		scsi_host_put(qedf->lport->host);
}

static void qedf_remove(struct pci_dev *pdev)
{
	/* Check to make sure this function wasn't already disabled */
	if (!atomic_read(&pdev->enable_cnt))
		return;

	__qedf_remove(pdev, QEDF_MODE_NORMAL);
}

void qedf_wq_grcdump(struct work_struct *work)
{
	struct qedf_ctx *qedf =
	    container_of(work, struct qedf_ctx, grcdump_work.work);

	QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
	qedf_capture_grc_dump(qedf);
}

/*
 * Protocol TLV handler
 */
void qedf_get_protocol_tlv_data(void *dev, void *data)
{
	struct qedf_ctx *qedf = dev;
	struct qed_mfw_tlv_fcoe *fcoe = data;
	struct fc_lport *lport = qedf->lport;
	struct Scsi_Host *host = lport->host;
	struct fc_host_attrs *fc_host = shost_to_fc_host(host);
	struct fc_host_statistics *hst;

	/* Force a refresh of the fc_host stats including offload stats */
	hst = qedf_fc_get_host_stats(host);

	fcoe->qos_pri_set = true;
	fcoe->qos_pri = 3; /* Hard coded to 3 in driver */

	fcoe->ra_tov_set = true;
	fcoe->ra_tov = lport->r_a_tov;

	fcoe->ed_tov_set = true;
	fcoe->ed_tov = lport->e_d_tov;

	fcoe->npiv_state_set = true;
	fcoe->npiv_state = 1; /* NPIV always enabled */

	fcoe->num_npiv_ids_set = true;
	fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;

	/* Certain attributes we only want to set if we've selected an FCF */
	if (qedf->ctlr.sel_fcf) {
		fcoe->switch_name_set = true;
		u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
	}

	fcoe->port_state_set = true;
	/* For qedf we're either link down or fabric attach */
	if (lport->link_up)
		fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
	else
		fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;

	fcoe->link_failures_set = true;
	fcoe->link_failures = (u16)hst->link_failure_count;

	fcoe->fcoe_txq_depth_set = true;
	fcoe->fcoe_rxq_depth_set = true;
	fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
	fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;

	fcoe->fcoe_rx_frames_set = true;
	fcoe->fcoe_rx_frames = hst->rx_frames;

	fcoe->fcoe_tx_frames_set = true;
	fcoe->fcoe_tx_frames = hst->tx_frames;

	fcoe->fcoe_rx_bytes_set = true;
	fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;

	fcoe->fcoe_tx_bytes_set = true;
	fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;

	fcoe->crc_count_set = true;
	fcoe->crc_count = hst->invalid_crc_count;

	fcoe->tx_abts_set = true;
	fcoe->tx_abts = hst->fcp_packet_aborts;

	fcoe->tx_lun_rst_set = true;
	fcoe->tx_lun_rst = qedf->lun_resets;

	fcoe->abort_task_sets_set = true;
	fcoe->abort_task_sets = qedf->packet_aborts;

	fcoe->scsi_busy_set = true;
	fcoe->scsi_busy = qedf->busy;

	fcoe->scsi_tsk_full_set = true;
	fcoe->scsi_tsk_full = qedf->task_set_fulls;
}

/* Generic TLV data callback */
void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
{
	struct qedf_ctx *qedf;

	if (!dev) {
		QEDF_INFO(NULL, QEDF_LOG_EVT,
			  "dev is NULL so ignoring get_generic_tlv_data request.\n");
		return;
	}
	qedf = (struct qedf_ctx *)dev;

	memset(data, 0, sizeof(struct qed_generic_tlvs));
	ether_addr_copy(data->mac[0], qedf->mac);
}

/*
 * Module Init/Remove
 */

static int __init qedf_init(void)
{
	int ret;

	/* If debug=1 passed, set the default log mask */
	if (qedf_debug == QEDF_LOG_DEFAULT)
		qedf_debug = QEDF_DEFAULT_LOG_MASK;

	/*
	 * Check that default prio for FIP/FCoE traffic is between 0..7 if a
	 * value has been set
	 */
	if (qedf_default_prio > -1)
		if (qedf_default_prio > 7) {
			qedf_default_prio = QEDF_DEFAULT_PRIO;
			QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
			    QEDF_DEFAULT_PRIO);
		}

	/* Print driver banner */
	QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
		   QEDF_VERSION);

	/* Create kmem_cache for qedf_io_work structs */
	qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
	    sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
	if (qedf_io_work_cache == NULL) {
		QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
		goto err1;
	}
	QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
	    qedf_io_work_cache);

	qed_ops = qed_get_fcoe_ops();
	if (!qed_ops) {
		QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
		goto err1;
	}

#ifdef CONFIG_DEBUG_FS
	qedf_dbg_init("qedf");
#endif

	qedf_fc_transport_template =
	    fc_attach_transport(&qedf_fc_transport_fn);
	if (!qedf_fc_transport_template) {
		QEDF_ERR(NULL, "Could not register with FC transport\n");
		goto err2;
	}

	qedf_fc_vport_transport_template =
		fc_attach_transport(&qedf_fc_vport_transport_fn);
	if (!qedf_fc_vport_transport_template) {
		QEDF_ERR(NULL, "Could not register vport template with FC "
			  "transport\n");
		goto err3;
	}

	qedf_io_wq = create_workqueue("qedf_io_wq");
	if (!qedf_io_wq) {
		QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
		goto err4;
	}

	qedf_cb_ops.get_login_failures = qedf_get_login_failures;

	ret = pci_register_driver(&qedf_pci_driver);
	if (ret) {
		QEDF_ERR(NULL, "Failed to register driver\n");
		goto err5;
	}

	return 0;

err5:
	destroy_workqueue(qedf_io_wq);
err4:
	fc_release_transport(qedf_fc_vport_transport_template);
err3:
	fc_release_transport(qedf_fc_transport_template);
err2:
#ifdef CONFIG_DEBUG_FS
	qedf_dbg_exit();
#endif
	qed_put_fcoe_ops();
err1:
	return -EINVAL;
}

static void __exit qedf_cleanup(void)
{
	pci_unregister_driver(&qedf_pci_driver);

	destroy_workqueue(qedf_io_wq);

	fc_release_transport(qedf_fc_vport_transport_template);
	fc_release_transport(qedf_fc_transport_template);
#ifdef CONFIG_DEBUG_FS
	qedf_dbg_exit();
#endif
	qed_put_fcoe_ops();

	kmem_cache_destroy(qedf_io_work_cache);
}

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver");
MODULE_AUTHOR("QLogic Corporation");
MODULE_VERSION(QEDF_VERSION);
module_init(qedf_init);
module_exit(qedf_cleanup);