aboutsummaryrefslogtreecommitdiff
path: root/drivers/scsi/qla4xxx/ql4_os.c
blob: a77bfb2242489b76842ab3ba3fbc138774b0c5dc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
5262
5263
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284
5285
5286
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303
5304
5305
5306
5307
5308
5309
5310
5311
5312
5313
5314
5315
5316
5317
5318
5319
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334
5335
5336
5337
5338
5339
5340
5341
5342
5343
5344
5345
5346
5347
5348
5349
5350
5351
5352
5353
5354
5355
5356
5357
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368
5369
5370
5371
5372
5373
5374
5375
5376
5377
5378
5379
5380
5381
5382
5383
5384
5385
5386
5387
5388
5389
5390
5391
5392
5393
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403
5404
5405
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
5421
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
5525
5526
5527
5528
5529
5530
5531
5532
5533
5534
5535
5536
5537
5538
5539
5540
5541
5542
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
5560
5561
5562
5563
5564
5565
5566
5567
5568
5569
5570
5571
5572
5573
5574
5575
5576
5577
5578
5579
5580
5581
5582
5583
5584
5585
5586
5587
5588
5589
5590
5591
5592
5593
5594
5595
5596
5597
5598
5599
5600
5601
5602
5603
5604
5605
5606
5607
5608
5609
5610
5611
5612
5613
5614
5615
5616
5617
5618
5619
5620
5621
5622
5623
5624
5625
5626
5627
5628
5629
5630
5631
5632
5633
5634
5635
5636
5637
5638
5639
5640
5641
5642
5643
5644
5645
5646
5647
5648
5649
5650
5651
5652
5653
5654
5655
5656
5657
5658
5659
5660
5661
5662
5663
5664
5665
5666
5667
5668
5669
5670
5671
5672
5673
5674
5675
5676
5677
5678
5679
5680
5681
5682
5683
5684
5685
5686
5687
5688
5689
5690
5691
5692
5693
5694
5695
5696
5697
5698
5699
5700
5701
5702
5703
5704
5705
5706
5707
5708
5709
5710
5711
5712
5713
5714
5715
5716
5717
5718
5719
5720
5721
5722
5723
5724
5725
5726
5727
5728
5729
5730
5731
5732
5733
5734
5735
5736
5737
5738
5739
5740
5741
5742
5743
5744
5745
5746
5747
5748
5749
5750
5751
5752
5753
5754
5755
5756
5757
5758
5759
5760
5761
5762
5763
5764
5765
5766
5767
5768
5769
5770
5771
5772
5773
5774
5775
5776
5777
5778
5779
5780
5781
5782
5783
5784
5785
5786
5787
5788
5789
5790
5791
5792
5793
5794
5795
5796
5797
5798
5799
5800
5801
5802
5803
5804
5805
5806
5807
5808
5809
5810
5811
5812
5813
5814
5815
5816
5817
5818
5819
5820
5821
5822
5823
5824
5825
5826
5827
5828
5829
5830
5831
5832
5833
5834
5835
5836
5837
5838
5839
5840
5841
5842
5843
5844
5845
5846
5847
5848
5849
5850
5851
5852
5853
5854
5855
5856
5857
5858
5859
5860
5861
5862
5863
5864
5865
5866
5867
5868
5869
5870
5871
5872
5873
5874
5875
5876
5877
5878
5879
5880
5881
5882
5883
5884
5885
5886
5887
5888
5889
5890
5891
5892
5893
5894
5895
5896
5897
5898
5899
5900
5901
5902
5903
5904
5905
5906
5907
5908
5909
5910
5911
5912
5913
5914
5915
5916
5917
5918
5919
5920
5921
5922
5923
5924
5925
5926
5927
5928
5929
5930
5931
5932
5933
5934
5935
5936
5937
5938
5939
5940
5941
5942
5943
5944
5945
5946
5947
5948
5949
5950
5951
5952
5953
5954
5955
5956
5957
5958
5959
5960
5961
5962
5963
5964
5965
5966
5967
5968
5969
5970
5971
5972
5973
5974
5975
5976
5977
5978
5979
5980
5981
5982
5983
5984
5985
5986
5987
5988
5989
5990
5991
5992
5993
5994
5995
5996
5997
5998
5999
6000
6001
6002
6003
6004
6005
6006
6007
6008
6009
6010
6011
6012
6013
6014
6015
6016
6017
6018
6019
6020
6021
6022
6023
6024
6025
6026
6027
6028
6029
6030
6031
6032
6033
6034
6035
6036
6037
6038
6039
6040
6041
6042
6043
6044
6045
6046
6047
6048
6049
6050
6051
6052
6053
6054
6055
6056
6057
6058
6059
6060
6061
6062
6063
6064
6065
6066
6067
6068
6069
6070
6071
6072
6073
6074
6075
6076
6077
6078
6079
6080
6081
6082
6083
6084
6085
6086
6087
6088
6089
6090
6091
6092
6093
6094
6095
6096
6097
6098
6099
6100
6101
6102
6103
6104
6105
6106
6107
6108
6109
6110
6111
6112
6113
6114
6115
6116
6117
6118
6119
6120
6121
6122
6123
6124
6125
6126
6127
6128
6129
6130
6131
6132
6133
6134
6135
6136
6137
6138
6139
6140
6141
6142
6143
6144
6145
6146
6147
6148
6149
6150
6151
6152
6153
6154
6155
6156
6157
6158
6159
6160
6161
6162
6163
6164
6165
6166
6167
6168
6169
6170
6171
6172
6173
6174
6175
6176
6177
6178
6179
6180
6181
6182
6183
6184
6185
6186
6187
6188
6189
6190
6191
6192
6193
6194
6195
6196
6197
6198
6199
6200
6201
6202
6203
6204
6205
6206
6207
6208
6209
6210
6211
6212
6213
6214
6215
6216
6217
6218
6219
6220
6221
6222
6223
6224
6225
6226
6227
6228
6229
6230
6231
6232
6233
6234
6235
6236
6237
6238
6239
6240
6241
6242
6243
6244
6245
6246
6247
6248
6249
6250
6251
6252
6253
6254
6255
6256
6257
6258
6259
6260
6261
6262
6263
6264
6265
6266
6267
6268
6269
6270
6271
6272
6273
6274
6275
6276
6277
6278
6279
6280
6281
6282
6283
6284
6285
6286
6287
6288
6289
6290
6291
6292
6293
6294
6295
6296
6297
6298
6299
6300
6301
6302
6303
6304
6305
6306
6307
6308
6309
6310
6311
6312
6313
6314
6315
6316
6317
6318
6319
6320
6321
6322
6323
6324
6325
6326
6327
6328
6329
6330
6331
6332
6333
6334
6335
6336
6337
6338
6339
6340
6341
6342
6343
6344
6345
6346
6347
6348
6349
6350
6351
6352
6353
6354
6355
6356
6357
6358
6359
6360
6361
6362
6363
6364
6365
6366
6367
6368
6369
6370
6371
6372
6373
6374
6375
6376
6377
6378
6379
6380
6381
6382
6383
6384
6385
6386
6387
6388
6389
6390
6391
6392
6393
6394
6395
6396
6397
6398
6399
6400
6401
6402
6403
6404
6405
6406
6407
6408
6409
6410
6411
6412
6413
6414
6415
6416
6417
6418
6419
6420
6421
6422
6423
6424
6425
6426
6427
6428
6429
6430
6431
6432
6433
6434
6435
6436
6437
6438
6439
6440
6441
6442
6443
6444
6445
6446
6447
6448
6449
6450
6451
6452
6453
6454
6455
6456
6457
6458
6459
6460
6461
6462
6463
6464
6465
6466
6467
6468
6469
6470
6471
6472
6473
6474
6475
6476
6477
6478
6479
6480
6481
6482
6483
6484
6485
6486
6487
6488
6489
6490
6491
6492
6493
6494
6495
6496
6497
6498
6499
6500
6501
6502
6503
6504
6505
6506
6507
6508
6509
6510
6511
6512
6513
6514
6515
6516
6517
6518
6519
6520
6521
6522
6523
6524
6525
6526
6527
6528
6529
6530
6531
6532
6533
6534
6535
6536
6537
6538
6539
6540
6541
6542
6543
6544
6545
6546
6547
6548
6549
6550
6551
6552
6553
6554
6555
6556
6557
6558
6559
6560
6561
6562
6563
6564
6565
6566
6567
6568
6569
6570
6571
6572
6573
6574
6575
6576
6577
6578
6579
6580
6581
6582
6583
6584
6585
6586
6587
6588
6589
6590
6591
6592
6593
6594
6595
6596
6597
6598
6599
6600
6601
6602
6603
6604
6605
6606
6607
6608
6609
6610
6611
6612
6613
6614
6615
6616
6617
6618
6619
6620
6621
6622
6623
6624
6625
6626
6627
6628
6629
6630
6631
6632
6633
6634
6635
6636
6637
6638
6639
6640
6641
6642
6643
6644
6645
6646
6647
6648
6649
6650
6651
6652
6653
6654
6655
6656
6657
6658
6659
6660
6661
6662
6663
6664
6665
6666
6667
6668
6669
6670
6671
6672
6673
6674
6675
6676
6677
6678
6679
6680
6681
6682
6683
6684
6685
6686
6687
6688
6689
6690
6691
6692
6693
6694
6695
6696
6697
6698
6699
6700
6701
6702
6703
6704
6705
6706
6707
6708
6709
6710
6711
6712
6713
6714
6715
6716
6717
6718
6719
6720
6721
6722
6723
6724
6725
6726
6727
6728
6729
6730
6731
6732
6733
6734
6735
6736
6737
6738
6739
6740
6741
6742
6743
6744
6745
6746
6747
6748
6749
6750
6751
6752
6753
6754
6755
6756
6757
6758
6759
6760
6761
6762
6763
6764
6765
6766
6767
6768
6769
6770
6771
6772
6773
6774
6775
6776
6777
6778
6779
6780
6781
6782
6783
6784
6785
6786
6787
6788
6789
6790
6791
6792
6793
6794
6795
6796
6797
6798
6799
6800
6801
6802
6803
6804
6805
6806
6807
6808
6809
6810
6811
6812
6813
6814
6815
6816
6817
6818
6819
6820
6821
6822
6823
6824
6825
6826
6827
6828
6829
6830
6831
6832
6833
6834
6835
6836
6837
6838
6839
6840
6841
6842
6843
6844
6845
6846
6847
6848
6849
6850
6851
6852
6853
6854
6855
6856
6857
6858
6859
6860
6861
6862
6863
6864
6865
6866
6867
6868
6869
6870
6871
6872
6873
6874
6875
6876
6877
6878
6879
6880
6881
6882
6883
6884
6885
6886
6887
6888
6889
6890
6891
6892
6893
6894
6895
6896
6897
6898
6899
6900
6901
6902
6903
6904
6905
6906
6907
6908
6909
6910
6911
6912
6913
6914
6915
6916
6917
6918
6919
6920
6921
6922
6923
6924
6925
6926
6927
6928
6929
6930
6931
6932
6933
6934
6935
6936
6937
6938
6939
6940
6941
6942
6943
6944
6945
6946
6947
6948
6949
6950
6951
6952
6953
6954
6955
6956
6957
6958
6959
6960
6961
6962
6963
6964
6965
6966
6967
6968
6969
6970
6971
6972
6973
6974
6975
6976
6977
6978
6979
6980
6981
6982
6983
6984
6985
6986
6987
6988
6989
6990
6991
6992
6993
6994
6995
6996
6997
6998
6999
7000
7001
7002
7003
7004
7005
7006
7007
7008
7009
7010
7011
7012
7013
7014
7015
7016
7017
7018
7019
7020
7021
7022
7023
7024
7025
7026
7027
7028
7029
7030
7031
7032
7033
7034
7035
7036
7037
7038
7039
7040
7041
7042
7043
7044
7045
7046
7047
7048
7049
7050
7051
7052
7053
7054
7055
7056
7057
7058
7059
7060
7061
7062
7063
7064
7065
7066
7067
7068
7069
7070
7071
7072
7073
7074
7075
7076
7077
7078
7079
7080
7081
7082
7083
7084
7085
7086
7087
7088
7089
7090
7091
7092
7093
7094
7095
7096
7097
7098
7099
7100
7101
7102
7103
7104
7105
7106
7107
7108
7109
7110
7111
7112
7113
7114
7115
7116
7117
7118
7119
7120
7121
7122
7123
7124
7125
7126
7127
7128
7129
7130
7131
7132
7133
7134
7135
7136
7137
7138
7139
7140
7141
7142
7143
7144
7145
7146
7147
7148
7149
7150
7151
7152
7153
7154
7155
7156
7157
7158
7159
7160
7161
7162
7163
7164
7165
7166
7167
7168
7169
7170
7171
7172
7173
7174
7175
7176
7177
7178
7179
7180
7181
7182
7183
7184
7185
7186
7187
7188
7189
7190
7191
7192
7193
7194
7195
7196
7197
7198
7199
7200
7201
7202
7203
7204
7205
7206
7207
7208
7209
7210
7211
7212
7213
7214
7215
7216
7217
7218
7219
7220
7221
7222
7223
7224
7225
7226
7227
7228
7229
7230
7231
7232
7233
7234
7235
7236
7237
7238
7239
7240
7241
7242
7243
7244
7245
7246
7247
7248
7249
7250
7251
7252
7253
7254
7255
7256
7257
7258
7259
7260
7261
7262
7263
7264
7265
7266
7267
7268
7269
7270
7271
7272
7273
7274
7275
7276
7277
7278
7279
7280
7281
7282
7283
7284
7285
7286
7287
7288
7289
7290
7291
7292
7293
7294
7295
7296
7297
7298
7299
7300
7301
7302
7303
7304
7305
7306
7307
7308
7309
7310
7311
7312
7313
7314
7315
7316
7317
7318
7319
7320
7321
7322
7323
7324
7325
7326
7327
7328
7329
7330
7331
7332
7333
7334
7335
7336
7337
7338
7339
7340
7341
7342
7343
7344
7345
7346
7347
7348
7349
7350
7351
7352
7353
7354
7355
7356
7357
7358
7359
7360
7361
7362
7363
7364
7365
7366
7367
7368
7369
7370
7371
7372
7373
7374
7375
7376
7377
7378
7379
7380
7381
7382
7383
7384
7385
7386
7387
7388
7389
7390
7391
7392
7393
7394
7395
7396
7397
7398
7399
7400
7401
7402
7403
7404
7405
7406
7407
7408
7409
7410
7411
7412
7413
7414
7415
7416
7417
7418
7419
7420
7421
7422
7423
7424
7425
7426
7427
7428
7429
7430
7431
7432
7433
7434
7435
7436
7437
7438
7439
7440
7441
7442
7443
7444
7445
7446
7447
7448
7449
7450
7451
7452
7453
7454
7455
7456
7457
7458
7459
7460
7461
7462
7463
7464
7465
7466
7467
7468
7469
7470
7471
7472
7473
7474
7475
7476
7477
7478
7479
7480
7481
7482
7483
7484
7485
7486
7487
7488
7489
7490
7491
7492
7493
7494
7495
7496
7497
7498
7499
7500
7501
7502
7503
7504
7505
7506
7507
7508
7509
7510
7511
7512
7513
7514
7515
7516
7517
7518
7519
7520
7521
7522
7523
7524
7525
7526
7527
7528
7529
7530
7531
7532
7533
7534
7535
7536
7537
7538
7539
7540
7541
7542
7543
7544
7545
7546
7547
7548
7549
7550
7551
7552
7553
7554
7555
7556
7557
7558
7559
7560
7561
7562
7563
7564
7565
7566
7567
7568
7569
7570
7571
7572
7573
7574
7575
7576
7577
7578
7579
7580
7581
7582
7583
7584
7585
7586
7587
7588
7589
7590
7591
7592
7593
7594
7595
7596
7597
7598
7599
7600
7601
7602
7603
7604
7605
7606
7607
7608
7609
7610
7611
7612
7613
7614
7615
7616
7617
7618
7619
7620
7621
7622
7623
7624
7625
7626
7627
7628
7629
7630
7631
7632
7633
7634
7635
7636
7637
7638
7639
7640
7641
7642
7643
7644
7645
7646
7647
7648
7649
7650
7651
7652
7653
7654
7655
7656
7657
7658
7659
7660
7661
7662
7663
7664
7665
7666
7667
7668
7669
7670
7671
7672
7673
7674
7675
7676
7677
7678
7679
7680
7681
7682
7683
7684
7685
7686
7687
7688
7689
7690
7691
7692
7693
7694
7695
7696
7697
7698
7699
7700
7701
7702
7703
7704
7705
7706
7707
7708
7709
7710
7711
7712
7713
7714
7715
7716
7717
7718
7719
7720
7721
7722
7723
7724
7725
7726
7727
7728
7729
7730
7731
7732
7733
7734
7735
7736
7737
7738
7739
7740
7741
7742
7743
7744
7745
7746
7747
7748
7749
7750
7751
7752
7753
7754
7755
7756
7757
7758
7759
7760
7761
7762
7763
7764
7765
7766
7767
7768
7769
7770
7771
7772
7773
7774
7775
7776
7777
7778
7779
7780
7781
7782
7783
7784
7785
7786
7787
7788
7789
7790
7791
7792
7793
7794
7795
7796
7797
7798
7799
7800
7801
7802
7803
7804
7805
7806
7807
7808
7809
7810
7811
7812
7813
7814
7815
7816
7817
7818
7819
7820
7821
7822
7823
7824
7825
7826
7827
7828
7829
7830
7831
7832
7833
7834
7835
7836
7837
7838
7839
7840
7841
7842
7843
7844
7845
7846
7847
7848
7849
7850
7851
7852
7853
7854
7855
7856
7857
7858
7859
7860
7861
7862
7863
7864
7865
7866
7867
7868
7869
7870
7871
7872
7873
7874
7875
7876
7877
7878
7879
7880
7881
7882
7883
7884
7885
7886
7887
7888
7889
7890
7891
7892
7893
7894
7895
7896
7897
7898
7899
7900
7901
7902
7903
7904
7905
7906
7907
7908
7909
7910
7911
7912
7913
7914
7915
7916
7917
7918
7919
7920
7921
7922
7923
7924
7925
7926
7927
7928
7929
7930
7931
7932
7933
7934
7935
7936
7937
7938
7939
7940
7941
7942
7943
7944
7945
7946
7947
7948
7949
7950
7951
7952
7953
7954
7955
7956
7957
7958
7959
7960
7961
7962
7963
7964
7965
7966
7967
7968
7969
7970
7971
7972
7973
7974
7975
7976
7977
7978
7979
7980
7981
7982
7983
7984
7985
7986
7987
7988
7989
7990
7991
7992
7993
7994
7995
7996
7997
7998
7999
8000
8001
8002
8003
8004
8005
8006
8007
8008
8009
8010
8011
8012
8013
8014
8015
8016
8017
8018
8019
8020
8021
8022
8023
8024
8025
8026
8027
8028
8029
8030
8031
8032
8033
8034
8035
8036
8037
8038
8039
8040
8041
8042
8043
8044
8045
8046
8047
8048
8049
8050
8051
8052
8053
8054
8055
8056
8057
8058
8059
8060
8061
8062
8063
8064
8065
8066
8067
8068
8069
8070
8071
8072
8073
8074
8075
8076
8077
8078
8079
8080
8081
8082
8083
8084
8085
8086
8087
8088
8089
8090
8091
8092
8093
8094
8095
8096
8097
8098
8099
8100
8101
8102
8103
8104
8105
8106
8107
8108
8109
8110
8111
8112
8113
8114
8115
8116
8117
8118
8119
8120
8121
8122
8123
8124
8125
8126
8127
8128
8129
8130
8131
8132
8133
8134
8135
8136
8137
8138
8139
8140
8141
8142
8143
8144
8145
8146
8147
8148
8149
8150
8151
8152
8153
8154
8155
8156
8157
8158
8159
8160
8161
8162
8163
8164
8165
8166
8167
8168
8169
8170
8171
8172
8173
8174
8175
8176
8177
8178
8179
8180
8181
8182
8183
8184
8185
8186
8187
8188
8189
8190
8191
8192
8193
8194
8195
8196
8197
8198
8199
8200
8201
8202
8203
8204
8205
8206
8207
8208
8209
8210
8211
8212
8213
8214
8215
8216
8217
8218
8219
8220
8221
8222
8223
8224
8225
8226
8227
8228
8229
8230
8231
8232
8233
8234
8235
8236
8237
8238
8239
8240
8241
8242
8243
8244
8245
8246
8247
8248
8249
8250
8251
8252
8253
8254
8255
8256
8257
8258
8259
8260
8261
8262
8263
8264
8265
8266
8267
8268
8269
8270
8271
8272
8273
8274
8275
8276
8277
8278
8279
8280
8281
8282
8283
8284
8285
8286
8287
8288
8289
8290
8291
8292
8293
8294
8295
8296
8297
8298
8299
8300
8301
8302
8303
8304
8305
8306
8307
8308
8309
8310
8311
8312
8313
8314
8315
8316
8317
8318
8319
8320
8321
8322
8323
8324
8325
8326
8327
8328
8329
8330
8331
8332
8333
8334
8335
8336
8337
8338
8339
8340
8341
8342
8343
8344
8345
8346
8347
8348
8349
8350
8351
8352
8353
8354
8355
8356
8357
8358
8359
8360
8361
8362
8363
8364
8365
8366
8367
8368
8369
8370
8371
8372
8373
8374
8375
8376
8377
8378
8379
8380
8381
8382
8383
8384
8385
8386
8387
8388
8389
8390
8391
8392
8393
8394
8395
8396
8397
8398
8399
8400
8401
8402
8403
8404
8405
8406
8407
8408
8409
8410
8411
8412
8413
8414
8415
8416
8417
8418
8419
8420
8421
8422
8423
8424
8425
8426
8427
8428
8429
8430
8431
8432
8433
8434
8435
8436
8437
8438
8439
8440
8441
8442
8443
8444
8445
8446
8447
8448
8449
8450
8451
8452
8453
8454
8455
8456
8457
8458
8459
8460
8461
8462
8463
8464
8465
8466
8467
8468
8469
8470
8471
8472
8473
8474
8475
8476
8477
8478
8479
8480
8481
8482
8483
8484
8485
8486
8487
8488
8489
8490
8491
8492
8493
8494
8495
8496
8497
8498
8499
8500
8501
8502
8503
8504
8505
8506
8507
8508
8509
8510
8511
8512
8513
8514
8515
8516
8517
8518
8519
8520
8521
8522
8523
8524
8525
8526
8527
8528
8529
8530
8531
8532
8533
8534
8535
8536
8537
8538
8539
8540
8541
8542
8543
8544
8545
8546
8547
8548
8549
8550
8551
8552
8553
8554
8555
8556
8557
8558
8559
8560
8561
8562
8563
8564
8565
8566
8567
8568
8569
8570
8571
8572
8573
8574
8575
8576
8577
8578
8579
8580
8581
8582
8583
8584
8585
8586
8587
8588
8589
8590
8591
8592
8593
8594
8595
8596
8597
8598
8599
8600
8601
8602
8603
8604
8605
8606
8607
8608
8609
8610
8611
8612
8613
8614
8615
8616
8617
8618
8619
8620
8621
8622
8623
8624
8625
8626
8627
8628
8629
8630
8631
8632
8633
8634
8635
8636
8637
8638
8639
8640
8641
8642
8643
8644
8645
8646
8647
8648
8649
8650
8651
8652
8653
8654
8655
8656
8657
8658
8659
8660
8661
8662
8663
8664
8665
8666
8667
8668
8669
8670
8671
8672
8673
8674
8675
8676
8677
8678
8679
8680
8681
8682
8683
8684
8685
8686
8687
8688
8689
8690
8691
8692
8693
8694
8695
8696
8697
8698
8699
8700
8701
8702
8703
8704
8705
8706
8707
8708
8709
8710
8711
8712
8713
8714
8715
8716
8717
8718
8719
8720
8721
8722
8723
8724
8725
8726
8727
8728
8729
8730
8731
8732
8733
8734
8735
8736
8737
8738
8739
8740
8741
8742
8743
8744
8745
8746
8747
8748
8749
8750
8751
8752
8753
8754
8755
8756
8757
8758
8759
8760
8761
8762
8763
8764
8765
8766
8767
8768
8769
8770
8771
8772
8773
8774
8775
8776
8777
8778
8779
8780
8781
8782
8783
8784
8785
8786
8787
8788
8789
8790
8791
8792
8793
8794
8795
8796
8797
8798
8799
8800
8801
8802
8803
8804
8805
8806
8807
8808
8809
8810
8811
8812
8813
8814
8815
8816
8817
8818
8819
8820
8821
8822
8823
8824
8825
8826
8827
8828
8829
8830
8831
8832
8833
8834
8835
8836
8837
8838
8839
8840
8841
8842
8843
8844
8845
8846
8847
8848
8849
8850
8851
8852
8853
8854
8855
8856
8857
8858
8859
8860
8861
8862
8863
8864
8865
8866
8867
8868
8869
8870
8871
8872
8873
8874
8875
8876
8877
8878
8879
8880
8881
8882
8883
8884
8885
8886
8887
8888
8889
8890
8891
8892
8893
8894
8895
8896
8897
8898
8899
8900
8901
8902
8903
8904
8905
8906
8907
8908
8909
8910
8911
8912
8913
8914
8915
8916
8917
8918
8919
8920
8921
8922
8923
8924
8925
8926
8927
8928
8929
8930
8931
8932
8933
8934
8935
8936
8937
8938
8939
8940
8941
8942
8943
8944
8945
8946
8947
8948
8949
8950
8951
8952
8953
8954
8955
8956
8957
8958
8959
8960
8961
8962
8963
8964
8965
8966
8967
8968
8969
8970
8971
8972
8973
8974
8975
8976
8977
8978
8979
8980
8981
8982
8983
8984
8985
8986
8987
8988
8989
8990
8991
8992
8993
8994
8995
8996
8997
8998
8999
9000
9001
9002
9003
9004
9005
9006
9007
9008
9009
9010
9011
9012
9013
9014
9015
9016
9017
9018
9019
9020
9021
9022
9023
9024
9025
9026
9027
9028
9029
9030
9031
9032
9033
9034
9035
9036
9037
9038
9039
9040
9041
9042
9043
9044
9045
9046
9047
9048
9049
9050
9051
9052
9053
9054
9055
9056
9057
9058
9059
9060
9061
9062
9063
9064
9065
9066
9067
9068
9069
9070
9071
9072
9073
9074
9075
9076
9077
9078
9079
9080
9081
9082
9083
9084
9085
9086
9087
9088
9089
9090
9091
9092
9093
9094
9095
9096
9097
9098
9099
9100
9101
9102
9103
9104
9105
9106
9107
9108
9109
9110
9111
9112
9113
9114
9115
9116
9117
9118
9119
9120
9121
9122
9123
9124
9125
9126
9127
9128
9129
9130
9131
9132
9133
9134
9135
9136
9137
9138
9139
9140
9141
9142
9143
9144
9145
9146
9147
9148
9149
9150
9151
9152
9153
9154
9155
9156
9157
9158
9159
9160
9161
9162
9163
9164
9165
9166
9167
9168
9169
9170
9171
9172
9173
9174
9175
9176
9177
9178
9179
9180
9181
9182
9183
9184
9185
9186
9187
9188
9189
9190
9191
9192
9193
9194
9195
9196
9197
9198
9199
9200
9201
9202
9203
9204
9205
9206
9207
9208
9209
9210
9211
9212
9213
9214
9215
9216
9217
9218
9219
9220
9221
9222
9223
9224
9225
9226
9227
9228
9229
9230
9231
9232
9233
9234
9235
9236
9237
9238
9239
9240
9241
9242
9243
9244
9245
9246
9247
9248
9249
9250
9251
9252
9253
9254
9255
9256
9257
9258
9259
9260
9261
9262
9263
9264
9265
9266
9267
9268
9269
9270
9271
9272
9273
9274
9275
9276
9277
9278
9279
9280
9281
9282
9283
9284
9285
9286
9287
9288
9289
9290
9291
9292
9293
9294
9295
9296
9297
9298
9299
9300
9301
9302
9303
9304
9305
9306
9307
9308
9309
9310
9311
9312
9313
9314
9315
9316
9317
9318
9319
9320
9321
9322
9323
9324
9325
9326
9327
9328
9329
9330
9331
9332
9333
9334
9335
9336
9337
9338
9339
9340
9341
9342
9343
9344
9345
9346
9347
9348
9349
9350
9351
9352
9353
9354
9355
9356
9357
9358
9359
9360
9361
9362
9363
9364
9365
9366
9367
9368
9369
9370
9371
9372
9373
9374
9375
9376
9377
9378
9379
9380
9381
9382
9383
9384
9385
9386
9387
9388
9389
9390
9391
9392
9393
9394
9395
9396
9397
9398
9399
9400
9401
9402
9403
9404
9405
9406
9407
9408
9409
9410
9411
9412
9413
9414
9415
9416
9417
9418
9419
9420
9421
9422
9423
9424
9425
9426
9427
9428
9429
9430
9431
9432
9433
9434
9435
9436
9437
9438
9439
9440
9441
9442
9443
9444
9445
9446
9447
9448
9449
9450
9451
9452
9453
9454
9455
9456
9457
9458
9459
9460
9461
9462
9463
9464
9465
9466
9467
9468
9469
9470
9471
9472
9473
9474
9475
9476
9477
9478
9479
9480
9481
9482
9483
9484
9485
9486
9487
9488
9489
9490
9491
9492
9493
9494
9495
9496
9497
9498
9499
9500
9501
9502
9503
9504
9505
9506
9507
9508
9509
9510
9511
9512
9513
9514
9515
9516
9517
9518
9519
9520
9521
9522
9523
9524
9525
9526
9527
9528
9529
9530
9531
9532
9533
9534
9535
9536
9537
9538
9539
9540
9541
9542
9543
9544
9545
9546
9547
9548
9549
9550
9551
9552
9553
9554
9555
9556
9557
9558
9559
9560
9561
9562
9563
9564
9565
9566
9567
9568
9569
9570
9571
9572
9573
9574
9575
9576
9577
9578
9579
9580
9581
9582
9583
9584
9585
9586
9587
9588
9589
9590
9591
9592
9593
9594
9595
9596
9597
9598
9599
9600
9601
9602
9603
9604
9605
9606
9607
9608
9609
9610
9611
9612
9613
9614
9615
9616
9617
9618
9619
9620
9621
9622
9623
9624
9625
9626
9627
9628
9629
9630
9631
9632
9633
9634
9635
9636
9637
9638
9639
9640
9641
9642
9643
9644
9645
9646
9647
9648
9649
9650
9651
9652
9653
9654
9655
9656
9657
9658
9659
9660
9661
9662
9663
9664
9665
9666
9667
9668
9669
9670
9671
9672
9673
9674
9675
9676
9677
9678
9679
9680
9681
9682
9683
9684
9685
9686
9687
9688
9689
9690
9691
9692
9693
9694
9695
9696
9697
9698
9699
9700
9701
9702
9703
9704
9705
9706
9707
9708
9709
9710
9711
9712
9713
9714
9715
9716
9717
9718
9719
9720
9721
9722
9723
9724
9725
9726
9727
9728
9729
9730
9731
9732
9733
9734
9735
9736
9737
9738
9739
9740
9741
9742
9743
9744
9745
9746
9747
9748
9749
9750
9751
9752
9753
9754
9755
9756
9757
9758
9759
9760
9761
9762
9763
9764
9765
9766
9767
9768
9769
9770
9771
9772
9773
9774
9775
9776
9777
9778
9779
9780
9781
9782
9783
9784
9785
9786
9787
9788
9789
9790
9791
9792
9793
9794
9795
9796
9797
9798
9799
9800
9801
9802
9803
9804
9805
9806
9807
9808
9809
9810
9811
9812
9813
9814
9815
9816
9817
9818
9819
9820
9821
9822
9823
9824
9825
9826
9827
9828
9829
9830
9831
9832
9833
9834
9835
9836
9837
9838
9839
9840
9841
9842
9843
9844
9845
9846
9847
9848
9849
9850
9851
9852
9853
9854
9855
9856
9857
9858
9859
9860
9861
9862
9863
9864
9865
9866
9867
9868
9869
9870
9871
9872
9873
9874
9875
9876
9877
9878
9879
9880
9881
9882
9883
9884
9885
9886
9887
9888
9889
9890
9891
9892
9893
9894
9895
9896
9897
9898
9899
9900
9901
9902
9903
9904
9905
9906
9907
9908
9909
9910
9911
9912
9913
9914
9915
9916
9917
9918
9919
9920
9921
9922
9923
9924
9925
9926
9927
9928
9929
9930
9931
9932
/*
 * QLogic iSCSI HBA Driver
 * Copyright (c)  2003-2013 QLogic Corporation
 *
 * See LICENSE.qla4xxx for copyright and licensing details.
 */
#include <linux/moduleparam.h>
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/iscsi_boot_sysfs.h>
#include <linux/inet.h>

#include <scsi/scsi_tcq.h>
#include <scsi/scsicam.h>

#include "ql4_def.h"
#include "ql4_version.h"
#include "ql4_glbl.h"
#include "ql4_dbg.h"
#include "ql4_inline.h"
#include "ql4_83xx.h"

/*
 * Driver version
 */
static char qla4xxx_version_str[40];

/*
 * SRB allocation cache
 */
static struct kmem_cache *srb_cachep;

/*
 * Module parameter information and variables
 */
static int ql4xdisablesysfsboot = 1;
module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ql4xdisablesysfsboot,
		 " Set to disable exporting boot targets to sysfs.\n"
		 "\t\t  0 - Export boot targets\n"
		 "\t\t  1 - Do not export boot targets (Default)");

int ql4xdontresethba;
module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ql4xdontresethba,
		 " Don't reset the HBA for driver recovery.\n"
		 "\t\t  0 - It will reset HBA (Default)\n"
		 "\t\t  1 - It will NOT reset HBA");

int ql4xextended_error_logging;
module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ql4xextended_error_logging,
		 " Option to enable extended error logging.\n"
		 "\t\t  0 - no logging (Default)\n"
		 "\t\t  2 - debug logging");

int ql4xenablemsix = 1;
module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql4xenablemsix,
		 " Set to enable MSI or MSI-X interrupt mechanism.\n"
		 "\t\t  0 = enable INTx interrupt mechanism.\n"
		 "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
		 "\t\t  2 = enable MSI interrupt mechanism.");

#define QL4_DEF_QDEPTH 32
static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ql4xmaxqdepth,
		 " Maximum queue depth to report for target devices.\n"
		 "\t\t  Default: 32.");

static int ql4xqfulltracking = 1;
module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ql4xqfulltracking,
		 " Enable or disable dynamic tracking and adjustment of\n"
		 "\t\t scsi device queue depth.\n"
		 "\t\t  0 - Disable.\n"
		 "\t\t  1 - Enable. (Default)");

static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
MODULE_PARM_DESC(ql4xsess_recovery_tmo,
		" Target Session Recovery Timeout.\n"
		"\t\t  Default: 120 sec.");

int ql4xmdcapmask = 0;
module_param(ql4xmdcapmask, int, S_IRUGO);
MODULE_PARM_DESC(ql4xmdcapmask,
		 " Set the Minidump driver capture mask level.\n"
		 "\t\t  Default is 0 (firmware default capture mask)\n"
		 "\t\t  Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F, 0xFF");

int ql4xenablemd = 1;
module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ql4xenablemd,
		 " Set to enable minidump.\n"
		 "\t\t  0 - disable minidump\n"
		 "\t\t  1 - enable minidump (Default)");

static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
/*
 * SCSI host template entry points
 */
static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);

/*
 * iSCSI template entry points
 */
static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
				     enum iscsi_param param, char *buf);
static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
				  enum iscsi_param param, char *buf);
static int qla4xxx_host_get_param(struct Scsi_Host *shost,
				  enum iscsi_host_param param, char *buf);
static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
				   uint32_t len);
static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
				   enum iscsi_param_type param_type,
				   int param, char *buf);
static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
						 struct sockaddr *dst_addr,
						 int non_blocking);
static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
				enum iscsi_param param, char *buf);
static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
static struct iscsi_cls_conn *
qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
			     struct iscsi_cls_conn *cls_conn,
			     uint64_t transport_fd, int is_leading);
static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
static struct iscsi_cls_session *
qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
			uint16_t qdepth, uint32_t initial_cmdsn);
static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
static void qla4xxx_task_work(struct work_struct *wdata);
static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
static int qla4xxx_task_xmit(struct iscsi_task *);
static void qla4xxx_task_cleanup(struct iscsi_task *);
static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
				   struct iscsi_stats *stats);
static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
			     uint32_t iface_type, uint32_t payload_size,
			     uint32_t pid, struct sockaddr *dst_addr);
static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
				 uint32_t *num_entries, char *buf);
static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void  *data,
				  int len);
static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len);

/*
 * SCSI host template entry points
 */
static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
static int qla4xxx_slave_alloc(struct scsi_device *device);
static umode_t qla4_attr_is_visible(int param_type, int param);
static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);

/*
 * iSCSI Flash DDB sysfs entry points
 */
static int
qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
			    struct iscsi_bus_flash_conn *fnode_conn,
			    void *data, int len);
static int
qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
			    int param, char *buf);
static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
				 int len);
static int
qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess);
static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
				   struct iscsi_bus_flash_conn *fnode_conn);
static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
				    struct iscsi_bus_flash_conn *fnode_conn);
static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess);

static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
    QLA82XX_LEGACY_INTR_CONFIG;

static struct scsi_host_template qla4xxx_driver_template = {
	.module			= THIS_MODULE,
	.name			= DRIVER_NAME,
	.proc_name		= DRIVER_NAME,
	.queuecommand		= qla4xxx_queuecommand,

	.eh_abort_handler	= qla4xxx_eh_abort,
	.eh_device_reset_handler = qla4xxx_eh_device_reset,
	.eh_target_reset_handler = qla4xxx_eh_target_reset,
	.eh_host_reset_handler	= qla4xxx_eh_host_reset,
	.eh_timed_out		= qla4xxx_eh_cmd_timed_out,

	.slave_alloc		= qla4xxx_slave_alloc,
	.change_queue_depth	= scsi_change_queue_depth,

	.this_id		= -1,
	.cmd_per_lun		= 3,
	.sg_tablesize		= SG_ALL,

	.max_sectors		= 0xFFFF,
	.shost_attrs		= qla4xxx_host_attrs,
	.host_reset		= qla4xxx_host_reset,
	.vendor_id		= SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
};

static struct iscsi_transport qla4xxx_iscsi_transport = {
	.owner			= THIS_MODULE,
	.name			= DRIVER_NAME,
	.caps			= CAP_TEXT_NEGO |
				  CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
				  CAP_DATADGST | CAP_LOGIN_OFFLOAD |
				  CAP_MULTI_R2T,
	.attr_is_visible	= qla4_attr_is_visible,
	.create_session         = qla4xxx_session_create,
	.destroy_session        = qla4xxx_session_destroy,
	.start_conn             = qla4xxx_conn_start,
	.create_conn            = qla4xxx_conn_create,
	.bind_conn              = qla4xxx_conn_bind,
	.stop_conn              = iscsi_conn_stop,
	.destroy_conn           = qla4xxx_conn_destroy,
	.set_param              = iscsi_set_param,
	.get_conn_param		= qla4xxx_conn_get_param,
	.get_session_param	= qla4xxx_session_get_param,
	.get_ep_param           = qla4xxx_get_ep_param,
	.ep_connect		= qla4xxx_ep_connect,
	.ep_poll		= qla4xxx_ep_poll,
	.ep_disconnect		= qla4xxx_ep_disconnect,
	.get_stats		= qla4xxx_conn_get_stats,
	.send_pdu		= iscsi_conn_send_pdu,
	.xmit_task		= qla4xxx_task_xmit,
	.cleanup_task		= qla4xxx_task_cleanup,
	.alloc_pdu		= qla4xxx_alloc_pdu,

	.get_host_param		= qla4xxx_host_get_param,
	.set_iface_param	= qla4xxx_iface_set_param,
	.get_iface_param	= qla4xxx_get_iface_param,
	.bsg_request		= qla4xxx_bsg_request,
	.send_ping		= qla4xxx_send_ping,
	.get_chap		= qla4xxx_get_chap_list,
	.delete_chap		= qla4xxx_delete_chap,
	.set_chap		= qla4xxx_set_chap_entry,
	.get_flashnode_param	= qla4xxx_sysfs_ddb_get_param,
	.set_flashnode_param	= qla4xxx_sysfs_ddb_set_param,
	.new_flashnode		= qla4xxx_sysfs_ddb_add,
	.del_flashnode		= qla4xxx_sysfs_ddb_delete,
	.login_flashnode	= qla4xxx_sysfs_ddb_login,
	.logout_flashnode	= qla4xxx_sysfs_ddb_logout,
	.logout_flashnode_sid	= qla4xxx_sysfs_ddb_logout_sid,
	.get_host_stats		= qla4xxx_get_host_stats,
};

static struct scsi_transport_template *qla4xxx_scsi_transport;

static int qla4xxx_isp_check_reg(struct scsi_qla_host *ha)
{
	u32 reg_val = 0;
	int rval = QLA_SUCCESS;

	if (is_qla8022(ha))
		reg_val = readl(&ha->qla4_82xx_reg->host_status);
	else if (is_qla8032(ha) || is_qla8042(ha))
		reg_val = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_ALIVE_COUNTER);
	else
		reg_val = readw(&ha->reg->ctrl_status);

	if (reg_val == QL4_ISP_REG_DISCONNECT)
		rval = QLA_ERROR;

	return rval;
}

static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
			     uint32_t iface_type, uint32_t payload_size,
			     uint32_t pid, struct sockaddr *dst_addr)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct sockaddr_in *addr;
	struct sockaddr_in6 *addr6;
	uint32_t options = 0;
	uint8_t ipaddr[IPv6_ADDR_LEN];
	int rval;

	memset(ipaddr, 0, IPv6_ADDR_LEN);
	/* IPv4 to IPv4 */
	if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
	    (dst_addr->sa_family == AF_INET)) {
		addr = (struct sockaddr_in *)dst_addr;
		memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
				  "dest: %pI4\n", __func__,
				  &ha->ip_config.ip_address, ipaddr));
		rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
					 ipaddr);
		if (rval)
			rval = -EINVAL;
	} else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
		   (dst_addr->sa_family == AF_INET6)) {
		/* IPv6 to IPv6 */
		addr6 = (struct sockaddr_in6 *)dst_addr;
		memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);

		options |= PING_IPV6_PROTOCOL_ENABLE;

		/* Ping using LinkLocal address */
		if ((iface_num == 0) || (iface_num == 1)) {
			DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
					  "src: %pI6 dest: %pI6\n", __func__,
					  &ha->ip_config.ipv6_link_local_addr,
					  ipaddr));
			options |= PING_IPV6_LINKLOCAL_ADDR;
			rval = qla4xxx_ping_iocb(ha, options, payload_size,
						 pid, ipaddr);
		} else {
			ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
				   "not supported\n", __func__, iface_num);
			rval = -ENOSYS;
			goto exit_send_ping;
		}

		/*
		 * If ping using LinkLocal address fails, try ping using
		 * IPv6 address
		 */
		if (rval != QLA_SUCCESS) {
			options &= ~PING_IPV6_LINKLOCAL_ADDR;
			if (iface_num == 0) {
				options |= PING_IPV6_ADDR0;
				DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
						  "Ping src: %pI6 "
						  "dest: %pI6\n", __func__,
						  &ha->ip_config.ipv6_addr0,
						  ipaddr));
			} else if (iface_num == 1) {
				options |= PING_IPV6_ADDR1;
				DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
						  "Ping src: %pI6 "
						  "dest: %pI6\n", __func__,
						  &ha->ip_config.ipv6_addr1,
						  ipaddr));
			}
			rval = qla4xxx_ping_iocb(ha, options, payload_size,
						 pid, ipaddr);
			if (rval)
				rval = -EINVAL;
		}
	} else
		rval = -ENOSYS;
exit_send_ping:
	return rval;
}

static umode_t qla4_attr_is_visible(int param_type, int param)
{
	switch (param_type) {
	case ISCSI_HOST_PARAM:
		switch (param) {
		case ISCSI_HOST_PARAM_HWADDRESS:
		case ISCSI_HOST_PARAM_IPADDRESS:
		case ISCSI_HOST_PARAM_INITIATOR_NAME:
		case ISCSI_HOST_PARAM_PORT_STATE:
		case ISCSI_HOST_PARAM_PORT_SPEED:
			return S_IRUGO;
		default:
			return 0;
		}
	case ISCSI_PARAM:
		switch (param) {
		case ISCSI_PARAM_PERSISTENT_ADDRESS:
		case ISCSI_PARAM_PERSISTENT_PORT:
		case ISCSI_PARAM_CONN_ADDRESS:
		case ISCSI_PARAM_CONN_PORT:
		case ISCSI_PARAM_TARGET_NAME:
		case ISCSI_PARAM_TPGT:
		case ISCSI_PARAM_TARGET_ALIAS:
		case ISCSI_PARAM_MAX_BURST:
		case ISCSI_PARAM_MAX_R2T:
		case ISCSI_PARAM_FIRST_BURST:
		case ISCSI_PARAM_MAX_RECV_DLENGTH:
		case ISCSI_PARAM_MAX_XMIT_DLENGTH:
		case ISCSI_PARAM_IFACE_NAME:
		case ISCSI_PARAM_CHAP_OUT_IDX:
		case ISCSI_PARAM_CHAP_IN_IDX:
		case ISCSI_PARAM_USERNAME:
		case ISCSI_PARAM_PASSWORD:
		case ISCSI_PARAM_USERNAME_IN:
		case ISCSI_PARAM_PASSWORD_IN:
		case ISCSI_PARAM_AUTO_SND_TGT_DISABLE:
		case ISCSI_PARAM_DISCOVERY_SESS:
		case ISCSI_PARAM_PORTAL_TYPE:
		case ISCSI_PARAM_CHAP_AUTH_EN:
		case ISCSI_PARAM_DISCOVERY_LOGOUT_EN:
		case ISCSI_PARAM_BIDI_CHAP_EN:
		case ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL:
		case ISCSI_PARAM_DEF_TIME2WAIT:
		case ISCSI_PARAM_DEF_TIME2RETAIN:
		case ISCSI_PARAM_HDRDGST_EN:
		case ISCSI_PARAM_DATADGST_EN:
		case ISCSI_PARAM_INITIAL_R2T_EN:
		case ISCSI_PARAM_IMM_DATA_EN:
		case ISCSI_PARAM_PDU_INORDER_EN:
		case ISCSI_PARAM_DATASEQ_INORDER_EN:
		case ISCSI_PARAM_MAX_SEGMENT_SIZE:
		case ISCSI_PARAM_TCP_TIMESTAMP_STAT:
		case ISCSI_PARAM_TCP_WSF_DISABLE:
		case ISCSI_PARAM_TCP_NAGLE_DISABLE:
		case ISCSI_PARAM_TCP_TIMER_SCALE:
		case ISCSI_PARAM_TCP_TIMESTAMP_EN:
		case ISCSI_PARAM_TCP_XMIT_WSF:
		case ISCSI_PARAM_TCP_RECV_WSF:
		case ISCSI_PARAM_IP_FRAGMENT_DISABLE:
		case ISCSI_PARAM_IPV4_TOS:
		case ISCSI_PARAM_IPV6_TC:
		case ISCSI_PARAM_IPV6_FLOW_LABEL:
		case ISCSI_PARAM_IS_FW_ASSIGNED_IPV6:
		case ISCSI_PARAM_KEEPALIVE_TMO:
		case ISCSI_PARAM_LOCAL_PORT:
		case ISCSI_PARAM_ISID:
		case ISCSI_PARAM_TSID:
		case ISCSI_PARAM_DEF_TASKMGMT_TMO:
		case ISCSI_PARAM_ERL:
		case ISCSI_PARAM_STATSN:
		case ISCSI_PARAM_EXP_STATSN:
		case ISCSI_PARAM_DISCOVERY_PARENT_IDX:
		case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
		case ISCSI_PARAM_LOCAL_IPADDR:
			return S_IRUGO;
		default:
			return 0;
		}
	case ISCSI_NET_PARAM:
		switch (param) {
		case ISCSI_NET_PARAM_IPV4_ADDR:
		case ISCSI_NET_PARAM_IPV4_SUBNET:
		case ISCSI_NET_PARAM_IPV4_GW:
		case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
		case ISCSI_NET_PARAM_IFACE_ENABLE:
		case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
		case ISCSI_NET_PARAM_IPV6_ADDR:
		case ISCSI_NET_PARAM_IPV6_ROUTER:
		case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
		case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
		case ISCSI_NET_PARAM_VLAN_ID:
		case ISCSI_NET_PARAM_VLAN_PRIORITY:
		case ISCSI_NET_PARAM_VLAN_ENABLED:
		case ISCSI_NET_PARAM_MTU:
		case ISCSI_NET_PARAM_PORT:
		case ISCSI_NET_PARAM_IPADDR_STATE:
		case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
		case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
		case ISCSI_NET_PARAM_DELAYED_ACK_EN:
		case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
		case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
		case ISCSI_NET_PARAM_TCP_WSF:
		case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
		case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
		case ISCSI_NET_PARAM_CACHE_ID:
		case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
		case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
		case ISCSI_NET_PARAM_IPV4_TOS_EN:
		case ISCSI_NET_PARAM_IPV4_TOS:
		case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
		case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
		case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
		case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
		case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
		case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
		case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
		case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
		case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
		case ISCSI_NET_PARAM_REDIRECT_EN:
		case ISCSI_NET_PARAM_IPV4_TTL:
		case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
		case ISCSI_NET_PARAM_IPV6_MLD_EN:
		case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
		case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
		case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
		case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
		case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
		case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
		case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
		case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
			return S_IRUGO;
		default:
			return 0;
		}
	case ISCSI_IFACE_PARAM:
		switch (param) {
		case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
		case ISCSI_IFACE_PARAM_HDRDGST_EN:
		case ISCSI_IFACE_PARAM_DATADGST_EN:
		case ISCSI_IFACE_PARAM_IMM_DATA_EN:
		case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
		case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
		case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
		case ISCSI_IFACE_PARAM_ERL:
		case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
		case ISCSI_IFACE_PARAM_FIRST_BURST:
		case ISCSI_IFACE_PARAM_MAX_R2T:
		case ISCSI_IFACE_PARAM_MAX_BURST:
		case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
		case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
		case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
		case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
		case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
		case ISCSI_IFACE_PARAM_INITIATOR_NAME:
			return S_IRUGO;
		default:
			return 0;
		}
	case ISCSI_FLASHNODE_PARAM:
		switch (param) {
		case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
		case ISCSI_FLASHNODE_PORTAL_TYPE:
		case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
		case ISCSI_FLASHNODE_DISCOVERY_SESS:
		case ISCSI_FLASHNODE_ENTRY_EN:
		case ISCSI_FLASHNODE_HDR_DGST_EN:
		case ISCSI_FLASHNODE_DATA_DGST_EN:
		case ISCSI_FLASHNODE_IMM_DATA_EN:
		case ISCSI_FLASHNODE_INITIAL_R2T_EN:
		case ISCSI_FLASHNODE_DATASEQ_INORDER:
		case ISCSI_FLASHNODE_PDU_INORDER:
		case ISCSI_FLASHNODE_CHAP_AUTH_EN:
		case ISCSI_FLASHNODE_SNACK_REQ_EN:
		case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
		case ISCSI_FLASHNODE_BIDI_CHAP_EN:
		case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
		case ISCSI_FLASHNODE_ERL:
		case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
		case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
		case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
		case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
		case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
		case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
		case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
		case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
		case ISCSI_FLASHNODE_FIRST_BURST:
		case ISCSI_FLASHNODE_DEF_TIME2WAIT:
		case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
		case ISCSI_FLASHNODE_MAX_R2T:
		case ISCSI_FLASHNODE_KEEPALIVE_TMO:
		case ISCSI_FLASHNODE_ISID:
		case ISCSI_FLASHNODE_TSID:
		case ISCSI_FLASHNODE_PORT:
		case ISCSI_FLASHNODE_MAX_BURST:
		case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
		case ISCSI_FLASHNODE_IPADDR:
		case ISCSI_FLASHNODE_ALIAS:
		case ISCSI_FLASHNODE_REDIRECT_IPADDR:
		case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
		case ISCSI_FLASHNODE_LOCAL_PORT:
		case ISCSI_FLASHNODE_IPV4_TOS:
		case ISCSI_FLASHNODE_IPV6_TC:
		case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
		case ISCSI_FLASHNODE_NAME:
		case ISCSI_FLASHNODE_TPGT:
		case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
		case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
		case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
		case ISCSI_FLASHNODE_TCP_XMIT_WSF:
		case ISCSI_FLASHNODE_TCP_RECV_WSF:
		case ISCSI_FLASHNODE_CHAP_OUT_IDX:
		case ISCSI_FLASHNODE_USERNAME:
		case ISCSI_FLASHNODE_PASSWORD:
		case ISCSI_FLASHNODE_STATSN:
		case ISCSI_FLASHNODE_EXP_STATSN:
		case ISCSI_FLASHNODE_IS_BOOT_TGT:
			return S_IRUGO;
		default:
			return 0;
		}
	}

	return 0;
}

/**
 * qla4xxx_create chap_list - Create CHAP list from FLASH
 * @ha: pointer to adapter structure
 *
 * Read flash and make a list of CHAP entries, during login when a CHAP entry
 * is received, it will be checked in this list. If entry exist then the CHAP
 * entry index is set in the DDB. If CHAP entry does not exist in this list
 * then a new entry is added in FLASH in CHAP table and the index obtained is
 * used in the DDB.
 **/
static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
{
	int rval = 0;
	uint8_t *chap_flash_data = NULL;
	uint32_t offset;
	dma_addr_t chap_dma;
	uint32_t chap_size = 0;

	if (is_qla40XX(ha))
		chap_size = MAX_CHAP_ENTRIES_40XX *
			    sizeof(struct ql4_chap_table);
	else	/* Single region contains CHAP info for both
		 * ports which is divided into half for each port.
		 */
		chap_size = ha->hw.flt_chap_size / 2;

	chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
					     &chap_dma, GFP_KERNEL);
	if (!chap_flash_data) {
		ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
		return;
	}

	if (is_qla40XX(ha)) {
		offset = FLASH_CHAP_OFFSET;
	} else {
		offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
		if (ha->port_num == 1)
			offset += chap_size;
	}

	rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
	if (rval != QLA_SUCCESS)
		goto exit_chap_list;

	if (ha->chap_list == NULL)
		ha->chap_list = vmalloc(chap_size);
	if (ha->chap_list == NULL) {
		ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
		goto exit_chap_list;
	}

	memset(ha->chap_list, 0, chap_size);
	memcpy(ha->chap_list, chap_flash_data, chap_size);

exit_chap_list:
	dma_free_coherent(&ha->pdev->dev, chap_size, chap_flash_data, chap_dma);
}

static int qla4xxx_get_chap_by_index(struct scsi_qla_host *ha,
				     int16_t chap_index,
				     struct ql4_chap_table **chap_entry)
{
	int rval = QLA_ERROR;
	int max_chap_entries;

	if (!ha->chap_list) {
		ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
		rval = QLA_ERROR;
		goto exit_get_chap;
	}

	if (is_qla80XX(ha))
		max_chap_entries = (ha->hw.flt_chap_size / 2) /
				   sizeof(struct ql4_chap_table);
	else
		max_chap_entries = MAX_CHAP_ENTRIES_40XX;

	if (chap_index > max_chap_entries) {
		ql4_printk(KERN_ERR, ha, "Invalid Chap index\n");
		rval = QLA_ERROR;
		goto exit_get_chap;
	}

	*chap_entry = (struct ql4_chap_table *)ha->chap_list + chap_index;
	if ((*chap_entry)->cookie !=
	     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
		rval = QLA_ERROR;
		*chap_entry = NULL;
	} else {
		rval = QLA_SUCCESS;
	}

exit_get_chap:
	return rval;
}

/**
 * qla4xxx_find_free_chap_index - Find the first free chap index
 * @ha: pointer to adapter structure
 * @chap_index: CHAP index to be returned
 *
 * Find the first free chap index available in the chap table
 *
 * Note: Caller should acquire the chap lock before getting here.
 **/
static int qla4xxx_find_free_chap_index(struct scsi_qla_host *ha,
					uint16_t *chap_index)
{
	int i, rval;
	int free_index = -1;
	int max_chap_entries = 0;
	struct ql4_chap_table *chap_table;

	if (is_qla80XX(ha))
		max_chap_entries = (ha->hw.flt_chap_size / 2) /
						sizeof(struct ql4_chap_table);
	else
		max_chap_entries = MAX_CHAP_ENTRIES_40XX;

	if (!ha->chap_list) {
		ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
		rval = QLA_ERROR;
		goto exit_find_chap;
	}

	for (i = 0; i < max_chap_entries; i++) {
		chap_table = (struct ql4_chap_table *)ha->chap_list + i;

		if ((chap_table->cookie !=
		    __constant_cpu_to_le16(CHAP_VALID_COOKIE)) &&
		   (i > MAX_RESRV_CHAP_IDX)) {
				free_index = i;
				break;
		}
	}

	if (free_index != -1) {
		*chap_index = free_index;
		rval = QLA_SUCCESS;
	} else {
		rval = QLA_ERROR;
	}

exit_find_chap:
	return rval;
}

static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
				  uint32_t *num_entries, char *buf)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct ql4_chap_table *chap_table;
	struct iscsi_chap_rec *chap_rec;
	int max_chap_entries = 0;
	int valid_chap_entries = 0;
	int ret = 0, i;

	if (is_qla80XX(ha))
		max_chap_entries = (ha->hw.flt_chap_size / 2) /
					sizeof(struct ql4_chap_table);
	else
		max_chap_entries = MAX_CHAP_ENTRIES_40XX;

	ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
			__func__, *num_entries, chap_tbl_idx);

	if (!buf) {
		ret = -ENOMEM;
		goto exit_get_chap_list;
	}

	qla4xxx_create_chap_list(ha);

	chap_rec = (struct iscsi_chap_rec *) buf;
	mutex_lock(&ha->chap_sem);
	for (i = chap_tbl_idx; i < max_chap_entries; i++) {
		chap_table = (struct ql4_chap_table *)ha->chap_list + i;
		if (chap_table->cookie !=
		    __constant_cpu_to_le16(CHAP_VALID_COOKIE))
			continue;

		chap_rec->chap_tbl_idx = i;
		strlcpy(chap_rec->username, chap_table->name,
			ISCSI_CHAP_AUTH_NAME_MAX_LEN);
		strlcpy(chap_rec->password, chap_table->secret,
			QL4_CHAP_MAX_SECRET_LEN);
		chap_rec->password_length = chap_table->secret_len;

		if (chap_table->flags & BIT_7) /* local */
			chap_rec->chap_type = CHAP_TYPE_OUT;

		if (chap_table->flags & BIT_6) /* peer */
			chap_rec->chap_type = CHAP_TYPE_IN;

		chap_rec++;

		valid_chap_entries++;
		if (valid_chap_entries == *num_entries)
			break;
		else
			continue;
	}
	mutex_unlock(&ha->chap_sem);

exit_get_chap_list:
	ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
			__func__,  valid_chap_entries);
	*num_entries = valid_chap_entries;
	return ret;
}

static int __qla4xxx_is_chap_active(struct device *dev, void *data)
{
	int ret = 0;
	uint16_t *chap_tbl_idx = (uint16_t *) data;
	struct iscsi_cls_session *cls_session;
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;

	if (!iscsi_is_session_dev(dev))
		goto exit_is_chap_active;

	cls_session = iscsi_dev_to_session(dev);
	sess = cls_session->dd_data;
	ddb_entry = sess->dd_data;

	if (iscsi_session_chkready(cls_session))
		goto exit_is_chap_active;

	if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
		ret = 1;

exit_is_chap_active:
	return ret;
}

static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
				  uint16_t chap_tbl_idx)
{
	int ret = 0;

	ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
				    __qla4xxx_is_chap_active);

	return ret;
}

static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct ql4_chap_table *chap_table;
	dma_addr_t chap_dma;
	int max_chap_entries = 0;
	uint32_t offset = 0;
	uint32_t chap_size;
	int ret = 0;

	chap_table = dma_pool_zalloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
	if (chap_table == NULL)
		return -ENOMEM;

	if (is_qla80XX(ha))
		max_chap_entries = (ha->hw.flt_chap_size / 2) /
				   sizeof(struct ql4_chap_table);
	else
		max_chap_entries = MAX_CHAP_ENTRIES_40XX;

	if (chap_tbl_idx > max_chap_entries) {
		ret = -EINVAL;
		goto exit_delete_chap;
	}

	/* Check if chap index is in use.
	 * If chap is in use don't delet chap entry */
	ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
	if (ret) {
		ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
			   "delete from flash\n", chap_tbl_idx);
		ret = -EBUSY;
		goto exit_delete_chap;
	}

	chap_size = sizeof(struct ql4_chap_table);
	if (is_qla40XX(ha))
		offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
	else {
		offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
		/* flt_chap_size is CHAP table size for both ports
		 * so divide it by 2 to calculate the offset for second port
		 */
		if (ha->port_num == 1)
			offset += (ha->hw.flt_chap_size / 2);
		offset += (chap_tbl_idx * chap_size);
	}

	ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
	if (ret != QLA_SUCCESS) {
		ret = -EINVAL;
		goto exit_delete_chap;
	}

	DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
			  __le16_to_cpu(chap_table->cookie)));

	if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
		ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
		goto exit_delete_chap;
	}

	chap_table->cookie = __constant_cpu_to_le16(0xFFFF);

	offset = FLASH_CHAP_OFFSET |
			(chap_tbl_idx * sizeof(struct ql4_chap_table));
	ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
				FLASH_OPT_RMW_COMMIT);
	if (ret == QLA_SUCCESS && ha->chap_list) {
		mutex_lock(&ha->chap_sem);
		/* Update ha chap_list cache */
		memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
			chap_table, sizeof(struct ql4_chap_table));
		mutex_unlock(&ha->chap_sem);
	}
	if (ret != QLA_SUCCESS)
		ret =  -EINVAL;

exit_delete_chap:
	dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
	return ret;
}

/**
 * qla4xxx_set_chap_entry - Make chap entry with given information
 * @shost: pointer to host
 * @data: chap info - credentials, index and type to make chap entry
 * @len: length of data
 *
 * Add or update chap entry with the given information
 **/
static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void *data, int len)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct iscsi_chap_rec chap_rec;
	struct ql4_chap_table *chap_entry = NULL;
	struct iscsi_param_info *param_info;
	struct nlattr *attr;
	int max_chap_entries = 0;
	int type;
	int rem = len;
	int rc = 0;
	int size;

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

	nla_for_each_attr(attr, data, len, rem) {
		param_info = nla_data(attr);

		switch (param_info->param) {
		case ISCSI_CHAP_PARAM_INDEX:
			chap_rec.chap_tbl_idx = *(uint16_t *)param_info->value;
			break;
		case ISCSI_CHAP_PARAM_CHAP_TYPE:
			chap_rec.chap_type = param_info->value[0];
			break;
		case ISCSI_CHAP_PARAM_USERNAME:
			size = min_t(size_t, sizeof(chap_rec.username),
				     param_info->len);
			memcpy(chap_rec.username, param_info->value, size);
			break;
		case ISCSI_CHAP_PARAM_PASSWORD:
			size = min_t(size_t, sizeof(chap_rec.password),
				     param_info->len);
			memcpy(chap_rec.password, param_info->value, size);
			break;
		case ISCSI_CHAP_PARAM_PASSWORD_LEN:
			chap_rec.password_length = param_info->value[0];
			break;
		default:
			ql4_printk(KERN_ERR, ha,
				   "%s: No such sysfs attribute\n", __func__);
			rc = -ENOSYS;
			goto exit_set_chap;
		};
	}

	if (chap_rec.chap_type == CHAP_TYPE_IN)
		type = BIDI_CHAP;
	else
		type = LOCAL_CHAP;

	if (is_qla80XX(ha))
		max_chap_entries = (ha->hw.flt_chap_size / 2) /
				   sizeof(struct ql4_chap_table);
	else
		max_chap_entries = MAX_CHAP_ENTRIES_40XX;

	mutex_lock(&ha->chap_sem);
	if (chap_rec.chap_tbl_idx < max_chap_entries) {
		rc = qla4xxx_get_chap_by_index(ha, chap_rec.chap_tbl_idx,
					       &chap_entry);
		if (!rc) {
			if (!(type == qla4xxx_get_chap_type(chap_entry))) {
				ql4_printk(KERN_INFO, ha,
					   "Type mismatch for CHAP entry %d\n",
					   chap_rec.chap_tbl_idx);
				rc = -EINVAL;
				goto exit_unlock_chap;
			}

			/* If chap index is in use then don't modify it */
			rc = qla4xxx_is_chap_active(shost,
						    chap_rec.chap_tbl_idx);
			if (rc) {
				ql4_printk(KERN_INFO, ha,
					   "CHAP entry %d is in use\n",
					   chap_rec.chap_tbl_idx);
				rc = -EBUSY;
				goto exit_unlock_chap;
			}
		}
	} else {
		rc = qla4xxx_find_free_chap_index(ha, &chap_rec.chap_tbl_idx);
		if (rc) {
			ql4_printk(KERN_INFO, ha, "CHAP entry not available\n");
			rc = -EBUSY;
			goto exit_unlock_chap;
		}
	}

	rc = qla4xxx_set_chap(ha, chap_rec.username, chap_rec.password,
			      chap_rec.chap_tbl_idx, type);

exit_unlock_chap:
	mutex_unlock(&ha->chap_sem);

exit_set_chap:
	return rc;
}


static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct iscsi_offload_host_stats *host_stats = NULL;
	int host_stats_size;
	int ret = 0;
	int ddb_idx = 0;
	struct ql_iscsi_stats *ql_iscsi_stats = NULL;
	int stats_size;
	dma_addr_t iscsi_stats_dma;

	DEBUG2(ql4_printk(KERN_INFO, ha, "Func: %s\n", __func__));

	host_stats_size = sizeof(struct iscsi_offload_host_stats);

	if (host_stats_size != len) {
		ql4_printk(KERN_INFO, ha, "%s: host_stats size mismatch expected = %d, is = %d\n",
			   __func__, len, host_stats_size);
		ret = -EINVAL;
		goto exit_host_stats;
	}
	host_stats = (struct iscsi_offload_host_stats *)buf;

	if (!buf) {
		ret = -ENOMEM;
		goto exit_host_stats;
	}

	stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));

	ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
					    &iscsi_stats_dma, GFP_KERNEL);
	if (!ql_iscsi_stats) {
		ql4_printk(KERN_ERR, ha,
			   "Unable to allocate memory for iscsi stats\n");
		ret = -ENOMEM;
		goto exit_host_stats;
	}

	ret =  qla4xxx_get_mgmt_data(ha, ddb_idx, stats_size,
				     iscsi_stats_dma);
	if (ret != QLA_SUCCESS) {
		ql4_printk(KERN_ERR, ha,
			   "Unable to retrieve iscsi stats\n");
		ret = -EIO;
		goto exit_host_stats;
	}
	host_stats->mactx_frames = le64_to_cpu(ql_iscsi_stats->mac_tx_frames);
	host_stats->mactx_bytes = le64_to_cpu(ql_iscsi_stats->mac_tx_bytes);
	host_stats->mactx_multicast_frames =
			le64_to_cpu(ql_iscsi_stats->mac_tx_multicast_frames);
	host_stats->mactx_broadcast_frames =
			le64_to_cpu(ql_iscsi_stats->mac_tx_broadcast_frames);
	host_stats->mactx_pause_frames =
			le64_to_cpu(ql_iscsi_stats->mac_tx_pause_frames);
	host_stats->mactx_control_frames =
			le64_to_cpu(ql_iscsi_stats->mac_tx_control_frames);
	host_stats->mactx_deferral =
			le64_to_cpu(ql_iscsi_stats->mac_tx_deferral);
	host_stats->mactx_excess_deferral =
			le64_to_cpu(ql_iscsi_stats->mac_tx_excess_deferral);
	host_stats->mactx_late_collision =
			le64_to_cpu(ql_iscsi_stats->mac_tx_late_collision);
	host_stats->mactx_abort	= le64_to_cpu(ql_iscsi_stats->mac_tx_abort);
	host_stats->mactx_single_collision =
			le64_to_cpu(ql_iscsi_stats->mac_tx_single_collision);
	host_stats->mactx_multiple_collision =
			le64_to_cpu(ql_iscsi_stats->mac_tx_multiple_collision);
	host_stats->mactx_collision =
			le64_to_cpu(ql_iscsi_stats->mac_tx_collision);
	host_stats->mactx_frames_dropped =
			le64_to_cpu(ql_iscsi_stats->mac_tx_frames_dropped);
	host_stats->mactx_jumbo_frames =
			le64_to_cpu(ql_iscsi_stats->mac_tx_jumbo_frames);
	host_stats->macrx_frames = le64_to_cpu(ql_iscsi_stats->mac_rx_frames);
	host_stats->macrx_bytes = le64_to_cpu(ql_iscsi_stats->mac_rx_bytes);
	host_stats->macrx_unknown_control_frames =
		le64_to_cpu(ql_iscsi_stats->mac_rx_unknown_control_frames);
	host_stats->macrx_pause_frames =
			le64_to_cpu(ql_iscsi_stats->mac_rx_pause_frames);
	host_stats->macrx_control_frames =
			le64_to_cpu(ql_iscsi_stats->mac_rx_control_frames);
	host_stats->macrx_dribble =
			le64_to_cpu(ql_iscsi_stats->mac_rx_dribble);
	host_stats->macrx_frame_length_error =
			le64_to_cpu(ql_iscsi_stats->mac_rx_frame_length_error);
	host_stats->macrx_jabber = le64_to_cpu(ql_iscsi_stats->mac_rx_jabber);
	host_stats->macrx_carrier_sense_error =
		le64_to_cpu(ql_iscsi_stats->mac_rx_carrier_sense_error);
	host_stats->macrx_frame_discarded =
			le64_to_cpu(ql_iscsi_stats->mac_rx_frame_discarded);
	host_stats->macrx_frames_dropped =
			le64_to_cpu(ql_iscsi_stats->mac_rx_frames_dropped);
	host_stats->mac_crc_error = le64_to_cpu(ql_iscsi_stats->mac_crc_error);
	host_stats->mac_encoding_error =
			le64_to_cpu(ql_iscsi_stats->mac_encoding_error);
	host_stats->macrx_length_error_large =
			le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_large);
	host_stats->macrx_length_error_small =
			le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_small);
	host_stats->macrx_multicast_frames =
			le64_to_cpu(ql_iscsi_stats->mac_rx_multicast_frames);
	host_stats->macrx_broadcast_frames =
			le64_to_cpu(ql_iscsi_stats->mac_rx_broadcast_frames);
	host_stats->iptx_packets = le64_to_cpu(ql_iscsi_stats->ip_tx_packets);
	host_stats->iptx_bytes = le64_to_cpu(ql_iscsi_stats->ip_tx_bytes);
	host_stats->iptx_fragments =
			le64_to_cpu(ql_iscsi_stats->ip_tx_fragments);
	host_stats->iprx_packets = le64_to_cpu(ql_iscsi_stats->ip_rx_packets);
	host_stats->iprx_bytes = le64_to_cpu(ql_iscsi_stats->ip_rx_bytes);
	host_stats->iprx_fragments =
			le64_to_cpu(ql_iscsi_stats->ip_rx_fragments);
	host_stats->ip_datagram_reassembly =
			le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly);
	host_stats->ip_invalid_address_error =
			le64_to_cpu(ql_iscsi_stats->ip_invalid_address_error);
	host_stats->ip_error_packets =
			le64_to_cpu(ql_iscsi_stats->ip_error_packets);
	host_stats->ip_fragrx_overlap =
			le64_to_cpu(ql_iscsi_stats->ip_fragrx_overlap);
	host_stats->ip_fragrx_outoforder =
			le64_to_cpu(ql_iscsi_stats->ip_fragrx_outoforder);
	host_stats->ip_datagram_reassembly_timeout =
		le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly_timeout);
	host_stats->ipv6tx_packets =
			le64_to_cpu(ql_iscsi_stats->ipv6_tx_packets);
	host_stats->ipv6tx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_tx_bytes);
	host_stats->ipv6tx_fragments =
			le64_to_cpu(ql_iscsi_stats->ipv6_tx_fragments);
	host_stats->ipv6rx_packets =
			le64_to_cpu(ql_iscsi_stats->ipv6_rx_packets);
	host_stats->ipv6rx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_rx_bytes);
	host_stats->ipv6rx_fragments =
			le64_to_cpu(ql_iscsi_stats->ipv6_rx_fragments);
	host_stats->ipv6_datagram_reassembly =
			le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly);
	host_stats->ipv6_invalid_address_error =
		le64_to_cpu(ql_iscsi_stats->ipv6_invalid_address_error);
	host_stats->ipv6_error_packets =
			le64_to_cpu(ql_iscsi_stats->ipv6_error_packets);
	host_stats->ipv6_fragrx_overlap =
			le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_overlap);
	host_stats->ipv6_fragrx_outoforder =
			le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_outoforder);
	host_stats->ipv6_datagram_reassembly_timeout =
		le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly_timeout);
	host_stats->tcptx_segments =
			le64_to_cpu(ql_iscsi_stats->tcp_tx_segments);
	host_stats->tcptx_bytes	= le64_to_cpu(ql_iscsi_stats->tcp_tx_bytes);
	host_stats->tcprx_segments =
			le64_to_cpu(ql_iscsi_stats->tcp_rx_segments);
	host_stats->tcprx_byte = le64_to_cpu(ql_iscsi_stats->tcp_rx_byte);
	host_stats->tcp_duplicate_ack_retx =
			le64_to_cpu(ql_iscsi_stats->tcp_duplicate_ack_retx);
	host_stats->tcp_retx_timer_expired =
			le64_to_cpu(ql_iscsi_stats->tcp_retx_timer_expired);
	host_stats->tcprx_duplicate_ack	=
			le64_to_cpu(ql_iscsi_stats->tcp_rx_duplicate_ack);
	host_stats->tcprx_pure_ackr =
			le64_to_cpu(ql_iscsi_stats->tcp_rx_pure_ackr);
	host_stats->tcptx_delayed_ack =
			le64_to_cpu(ql_iscsi_stats->tcp_tx_delayed_ack);
	host_stats->tcptx_pure_ack =
			le64_to_cpu(ql_iscsi_stats->tcp_tx_pure_ack);
	host_stats->tcprx_segment_error =
			le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_error);
	host_stats->tcprx_segment_outoforder =
			le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_outoforder);
	host_stats->tcprx_window_probe =
			le64_to_cpu(ql_iscsi_stats->tcp_rx_window_probe);
	host_stats->tcprx_window_update =
			le64_to_cpu(ql_iscsi_stats->tcp_rx_window_update);
	host_stats->tcptx_window_probe_persist =
		le64_to_cpu(ql_iscsi_stats->tcp_tx_window_probe_persist);
	host_stats->ecc_error_correction =
			le64_to_cpu(ql_iscsi_stats->ecc_error_correction);
	host_stats->iscsi_pdu_tx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_tx);
	host_stats->iscsi_data_bytes_tx =
			le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_tx);
	host_stats->iscsi_pdu_rx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_rx);
	host_stats->iscsi_data_bytes_rx	=
			le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_rx);
	host_stats->iscsi_io_completed =
			le64_to_cpu(ql_iscsi_stats->iscsi_io_completed);
	host_stats->iscsi_unexpected_io_rx =
			le64_to_cpu(ql_iscsi_stats->iscsi_unexpected_io_rx);
	host_stats->iscsi_format_error =
			le64_to_cpu(ql_iscsi_stats->iscsi_format_error);
	host_stats->iscsi_hdr_digest_error =
			le64_to_cpu(ql_iscsi_stats->iscsi_hdr_digest_error);
	host_stats->iscsi_data_digest_error =
			le64_to_cpu(ql_iscsi_stats->iscsi_data_digest_error);
	host_stats->iscsi_sequence_error =
			le64_to_cpu(ql_iscsi_stats->iscsi_sequence_error);
exit_host_stats:
	if (ql_iscsi_stats)
		dma_free_coherent(&ha->pdev->dev, host_stats_size,
				  ql_iscsi_stats, iscsi_stats_dma);

	ql4_printk(KERN_INFO, ha, "%s: Get host stats done\n",
		   __func__);
	return ret;
}

static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
				   enum iscsi_param_type param_type,
				   int param, char *buf)
{
	struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
	struct scsi_qla_host *ha = to_qla_host(shost);
	int ival;
	char *pval = NULL;
	int len = -ENOSYS;

	if (param_type == ISCSI_NET_PARAM) {
		switch (param) {
		case ISCSI_NET_PARAM_IPV4_ADDR:
			len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
			break;
		case ISCSI_NET_PARAM_IPV4_SUBNET:
			len = sprintf(buf, "%pI4\n",
				      &ha->ip_config.subnet_mask);
			break;
		case ISCSI_NET_PARAM_IPV4_GW:
			len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
			break;
		case ISCSI_NET_PARAM_IFACE_ENABLE:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
				OP_STATE(ha->ip_config.ipv4_options,
					 IPOPT_IPV4_PROTOCOL_ENABLE, pval);
			} else {
				OP_STATE(ha->ip_config.ipv6_options,
					 IPV6_OPT_IPV6_PROTOCOL_ENABLE, pval);
			}

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
			len = sprintf(buf, "%s\n",
				      (ha->ip_config.tcp_options &
				       TCPOPT_DHCP_ENABLE) ?
				      "dhcp" : "static");
			break;
		case ISCSI_NET_PARAM_IPV6_ADDR:
			if (iface->iface_num == 0)
				len = sprintf(buf, "%pI6\n",
					      &ha->ip_config.ipv6_addr0);
			if (iface->iface_num == 1)
				len = sprintf(buf, "%pI6\n",
					      &ha->ip_config.ipv6_addr1);
			break;
		case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
			len = sprintf(buf, "%pI6\n",
				      &ha->ip_config.ipv6_link_local_addr);
			break;
		case ISCSI_NET_PARAM_IPV6_ROUTER:
			len = sprintf(buf, "%pI6\n",
				      &ha->ip_config.ipv6_default_router_addr);
			break;
		case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
			pval = (ha->ip_config.ipv6_addl_options &
				IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
				"nd" : "static";

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
			pval = (ha->ip_config.ipv6_addl_options &
				IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
				"auto" : "static";

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_VLAN_ID:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
				ival = ha->ip_config.ipv4_vlan_tag &
				       ISCSI_MAX_VLAN_ID;
			else
				ival = ha->ip_config.ipv6_vlan_tag &
				       ISCSI_MAX_VLAN_ID;

			len = sprintf(buf, "%d\n", ival);
			break;
		case ISCSI_NET_PARAM_VLAN_PRIORITY:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
				ival = (ha->ip_config.ipv4_vlan_tag >> 13) &
				       ISCSI_MAX_VLAN_PRIORITY;
			else
				ival = (ha->ip_config.ipv6_vlan_tag >> 13) &
				       ISCSI_MAX_VLAN_PRIORITY;

			len = sprintf(buf, "%d\n", ival);
			break;
		case ISCSI_NET_PARAM_VLAN_ENABLED:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
				OP_STATE(ha->ip_config.ipv4_options,
					 IPOPT_VLAN_TAGGING_ENABLE, pval);
			} else {
				OP_STATE(ha->ip_config.ipv6_options,
					 IPV6_OPT_VLAN_TAGGING_ENABLE, pval);
			}
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_MTU:
			len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
			break;
		case ISCSI_NET_PARAM_PORT:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
				len = sprintf(buf, "%d\n",
					      ha->ip_config.ipv4_port);
			else
				len = sprintf(buf, "%d\n",
					      ha->ip_config.ipv6_port);
			break;
		case ISCSI_NET_PARAM_IPADDR_STATE:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
				pval = iscsi_get_ipaddress_state_name(
						ha->ip_config.ipv4_addr_state);
			} else {
				if (iface->iface_num == 0)
					pval = iscsi_get_ipaddress_state_name(
						ha->ip_config.ipv6_addr0_state);
				else if (iface->iface_num == 1)
					pval = iscsi_get_ipaddress_state_name(
						ha->ip_config.ipv6_addr1_state);
			}

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
			pval = iscsi_get_ipaddress_state_name(
					ha->ip_config.ipv6_link_local_state);
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
			pval = iscsi_get_router_state_name(
				      ha->ip_config.ipv6_default_router_state);
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_DELAYED_ACK_EN:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
				OP_STATE(~ha->ip_config.tcp_options,
					 TCPOPT_DELAYED_ACK_DISABLE, pval);
			} else {
				OP_STATE(~ha->ip_config.ipv6_tcp_options,
					 IPV6_TCPOPT_DELAYED_ACK_DISABLE, pval);
			}
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
				OP_STATE(~ha->ip_config.tcp_options,
					 TCPOPT_NAGLE_ALGO_DISABLE, pval);
			} else {
				OP_STATE(~ha->ip_config.ipv6_tcp_options,
					 IPV6_TCPOPT_NAGLE_ALGO_DISABLE, pval);
			}
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
				OP_STATE(~ha->ip_config.tcp_options,
					 TCPOPT_WINDOW_SCALE_DISABLE, pval);
			} else {
				OP_STATE(~ha->ip_config.ipv6_tcp_options,
					 IPV6_TCPOPT_WINDOW_SCALE_DISABLE,
					 pval);
			}
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_TCP_WSF:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
				len = sprintf(buf, "%d\n",
					      ha->ip_config.tcp_wsf);
			else
				len = sprintf(buf, "%d\n",
					      ha->ip_config.ipv6_tcp_wsf);
			break;
		case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
				ival = (ha->ip_config.tcp_options &
					TCPOPT_TIMER_SCALE) >> 1;
			else
				ival = (ha->ip_config.ipv6_tcp_options &
					IPV6_TCPOPT_TIMER_SCALE) >> 1;

			len = sprintf(buf, "%d\n", ival);
			break;
		case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
				OP_STATE(ha->ip_config.tcp_options,
					 TCPOPT_TIMESTAMP_ENABLE, pval);
			} else {
				OP_STATE(ha->ip_config.ipv6_tcp_options,
					 IPV6_TCPOPT_TIMESTAMP_EN, pval);
			}
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_CACHE_ID:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
				len = sprintf(buf, "%d\n",
					      ha->ip_config.ipv4_cache_id);
			else
				len = sprintf(buf, "%d\n",
					      ha->ip_config.ipv6_cache_id);
			break;
		case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
			OP_STATE(ha->ip_config.tcp_options,
				 TCPOPT_DNS_SERVER_IP_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
			OP_STATE(ha->ip_config.tcp_options,
				 TCPOPT_SLP_DA_INFO_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_TOS_EN:
			OP_STATE(ha->ip_config.ipv4_options,
				 IPOPT_IPV4_TOS_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_TOS:
			len = sprintf(buf, "%d\n", ha->ip_config.ipv4_tos);
			break;
		case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
			OP_STATE(ha->ip_config.ipv4_options,
				 IPOPT_GRAT_ARP_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
			OP_STATE(ha->ip_config.ipv4_options, IPOPT_ALT_CID_EN,
				 pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
			pval = (ha->ip_config.ipv4_alt_cid_len) ?
			       (char *)ha->ip_config.ipv4_alt_cid : "";

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
			OP_STATE(ha->ip_config.ipv4_options,
				 IPOPT_REQ_VID_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
			OP_STATE(ha->ip_config.ipv4_options,
				 IPOPT_USE_VID_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
			pval = (ha->ip_config.ipv4_vid_len) ?
			       (char *)ha->ip_config.ipv4_vid : "";

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
			OP_STATE(ha->ip_config.ipv4_options,
				 IPOPT_LEARN_IQN_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
			OP_STATE(~ha->ip_config.ipv4_options,
				 IPOPT_FRAGMENTATION_DISABLE, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
			OP_STATE(ha->ip_config.ipv4_options,
				 IPOPT_IN_FORWARD_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_REDIRECT_EN:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
				OP_STATE(ha->ip_config.ipv4_options,
					 IPOPT_ARP_REDIRECT_EN, pval);
			} else {
				OP_STATE(ha->ip_config.ipv6_options,
					 IPV6_OPT_REDIRECT_EN, pval);
			}
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_TTL:
			len = sprintf(buf, "%d\n", ha->ip_config.ipv4_ttl);
			break;
		case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
			OP_STATE(ha->ip_config.ipv6_options,
				 IPV6_OPT_GRAT_NEIGHBOR_ADV_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV6_MLD_EN:
			OP_STATE(ha->ip_config.ipv6_addl_options,
				 IPV6_ADDOPT_MLD_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
			len = sprintf(buf, "%u\n", ha->ip_config.ipv6_flow_lbl);
			break;
		case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
			len = sprintf(buf, "%d\n",
				      ha->ip_config.ipv6_traffic_class);
			break;
		case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
			len = sprintf(buf, "%d\n",
				      ha->ip_config.ipv6_hop_limit);
			break;
		case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
			len = sprintf(buf, "%d\n",
				      ha->ip_config.ipv6_nd_reach_time);
			break;
		case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
			len = sprintf(buf, "%d\n",
				      ha->ip_config.ipv6_nd_rexmit_timer);
			break;
		case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
			len = sprintf(buf, "%d\n",
				      ha->ip_config.ipv6_nd_stale_timeout);
			break;
		case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
			len = sprintf(buf, "%d\n",
				      ha->ip_config.ipv6_dup_addr_detect_count);
			break;
		case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
			len = sprintf(buf, "%d\n",
				      ha->ip_config.ipv6_gw_advrt_mtu);
			break;
		default:
			len = -ENOSYS;
		}
	} else if (param_type == ISCSI_IFACE_PARAM) {
		switch (param) {
		case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
			len = sprintf(buf, "%d\n", ha->ip_config.def_timeout);
			break;
		case ISCSI_IFACE_PARAM_HDRDGST_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_HEADER_DIGEST_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_DATADGST_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_DATA_DIGEST_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_IMM_DATA_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_IMMEDIATE_DATA_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_INITIAL_R2T_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_DATA_SEQ_INORDER_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_DATA_PDU_INORDER_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_ERL:
			len = sprintf(buf, "%d\n",
				      (ha->ip_config.iscsi_options &
				       ISCSIOPTS_ERL));
			break;
		case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
			len = sprintf(buf, "%u\n",
				      ha->ip_config.iscsi_max_pdu_size *
				      BYTE_UNITS);
			break;
		case ISCSI_IFACE_PARAM_FIRST_BURST:
			len = sprintf(buf, "%u\n",
				      ha->ip_config.iscsi_first_burst_len *
				      BYTE_UNITS);
			break;
		case ISCSI_IFACE_PARAM_MAX_R2T:
			len = sprintf(buf, "%d\n",
				      ha->ip_config.iscsi_max_outstnd_r2t);
			break;
		case ISCSI_IFACE_PARAM_MAX_BURST:
			len = sprintf(buf, "%u\n",
				      ha->ip_config.iscsi_max_burst_len *
				      BYTE_UNITS);
			break;
		case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_CHAP_AUTH_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_BIDI_CHAP_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_DISCOVERY_AUTH_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_DISCOVERY_LOGOUT_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_STRICT_LOGIN_COMP_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_INITIATOR_NAME:
			len = sprintf(buf, "%s\n", ha->ip_config.iscsi_name);
			break;
		default:
			len = -ENOSYS;
		}
	}

	return len;
}

static struct iscsi_endpoint *
qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
		   int non_blocking)
{
	int ret;
	struct iscsi_endpoint *ep;
	struct qla_endpoint *qla_ep;
	struct scsi_qla_host *ha;
	struct sockaddr_in *addr;
	struct sockaddr_in6 *addr6;

	if (!shost) {
		ret = -ENXIO;
		pr_err("%s: shost is NULL\n", __func__);
		return ERR_PTR(ret);
	}

	ha = iscsi_host_priv(shost);
	ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
	if (!ep) {
		ret = -ENOMEM;
		return ERR_PTR(ret);
	}

	qla_ep = ep->dd_data;
	memset(qla_ep, 0, sizeof(struct qla_endpoint));
	if (dst_addr->sa_family == AF_INET) {
		memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
		addr = (struct sockaddr_in *)&qla_ep->dst_addr;
		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
				  (char *)&addr->sin_addr));
	} else if (dst_addr->sa_family == AF_INET6) {
		memcpy(&qla_ep->dst_addr, dst_addr,
		       sizeof(struct sockaddr_in6));
		addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
				  (char *)&addr6->sin6_addr));
	} else {
		ql4_printk(KERN_WARNING, ha, "%s: Invalid endpoint\n",
			   __func__);
	}

	qla_ep->host = shost;

	return ep;
}

static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
{
	struct qla_endpoint *qla_ep;
	struct scsi_qla_host *ha;
	int ret = 0;

	qla_ep = ep->dd_data;
	ha = to_qla_host(qla_ep->host);
	DEBUG2(pr_info_ratelimited("%s: host: %ld\n", __func__, ha->host_no));

	if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
		ret = 1;

	return ret;
}

static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
{
	struct qla_endpoint *qla_ep;
	struct scsi_qla_host *ha;

	qla_ep = ep->dd_data;
	ha = to_qla_host(qla_ep->host);
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
			  ha->host_no));
	iscsi_destroy_endpoint(ep);
}

static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
				enum iscsi_param param,
				char *buf)
{
	struct qla_endpoint *qla_ep = ep->dd_data;
	struct sockaddr *dst_addr;
	struct scsi_qla_host *ha;

	if (!qla_ep)
		return -ENOTCONN;

	ha = to_qla_host(qla_ep->host);
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
			  ha->host_no));

	switch (param) {
	case ISCSI_PARAM_CONN_PORT:
	case ISCSI_PARAM_CONN_ADDRESS:
		dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
		if (!dst_addr)
			return -ENOTCONN;

		return iscsi_conn_get_addr_param((struct sockaddr_storage *)
						 &qla_ep->dst_addr, param, buf);
	default:
		return -ENOSYS;
	}
}

static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
				   struct iscsi_stats *stats)
{
	struct iscsi_session *sess;
	struct iscsi_cls_session *cls_sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;
	struct ql_iscsi_stats *ql_iscsi_stats;
	int stats_size;
	int ret;
	dma_addr_t iscsi_stats_dma;

	cls_sess = iscsi_conn_to_session(cls_conn);
	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;

	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
			  ha->host_no));
	stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
	/* Allocate memory */
	ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
					    &iscsi_stats_dma, GFP_KERNEL);
	if (!ql_iscsi_stats) {
		ql4_printk(KERN_ERR, ha,
			   "Unable to allocate memory for iscsi stats\n");
		goto exit_get_stats;
	}

	ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
				     iscsi_stats_dma);
	if (ret != QLA_SUCCESS) {
		ql4_printk(KERN_ERR, ha,
			   "Unable to retrieve iscsi stats\n");
		goto free_stats;
	}

	/* octets */
	stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
	stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
	/* xmit pdus */
	stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
	stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
	stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
	stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
	stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
	stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
	stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
	stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
	/* recv pdus */
	stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
	stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
	stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
	stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
	stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
	stats->logoutrsp_pdus =
			le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
	stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
	stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
	stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);

free_stats:
	dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
			  iscsi_stats_dma);
exit_get_stats:
	return;
}

static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
{
	struct iscsi_cls_session *session;
	struct iscsi_session *sess;
	unsigned long flags;
	enum blk_eh_timer_return ret = BLK_EH_DONE;

	session = starget_to_session(scsi_target(sc->device));
	sess = session->dd_data;

	spin_lock_irqsave(&session->lock, flags);
	if (session->state == ISCSI_SESSION_FAILED)
		ret = BLK_EH_RESET_TIMER;
	spin_unlock_irqrestore(&session->lock, flags);

	return ret;
}

static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct iscsi_cls_host *ihost = shost->shost_data;
	uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;

	qla4xxx_get_firmware_state(ha);

	switch (ha->addl_fw_state & 0x0F00) {
	case FW_ADDSTATE_LINK_SPEED_10MBPS:
		speed = ISCSI_PORT_SPEED_10MBPS;
		break;
	case FW_ADDSTATE_LINK_SPEED_100MBPS:
		speed = ISCSI_PORT_SPEED_100MBPS;
		break;
	case FW_ADDSTATE_LINK_SPEED_1GBPS:
		speed = ISCSI_PORT_SPEED_1GBPS;
		break;
	case FW_ADDSTATE_LINK_SPEED_10GBPS:
		speed = ISCSI_PORT_SPEED_10GBPS;
		break;
	}
	ihost->port_speed = speed;
}

static void qla4xxx_set_port_state(struct Scsi_Host *shost)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct iscsi_cls_host *ihost = shost->shost_data;
	uint32_t state = ISCSI_PORT_STATE_DOWN;

	if (test_bit(AF_LINK_UP, &ha->flags))
		state = ISCSI_PORT_STATE_UP;

	ihost->port_state = state;
}

static int qla4xxx_host_get_param(struct Scsi_Host *shost,
				  enum iscsi_host_param param, char *buf)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	int len;

	switch (param) {
	case ISCSI_HOST_PARAM_HWADDRESS:
		len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
		break;
	case ISCSI_HOST_PARAM_IPADDRESS:
		len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
		break;
	case ISCSI_HOST_PARAM_INITIATOR_NAME:
		len = sprintf(buf, "%s\n", ha->name_string);
		break;
	case ISCSI_HOST_PARAM_PORT_STATE:
		qla4xxx_set_port_state(shost);
		len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
		break;
	case ISCSI_HOST_PARAM_PORT_SPEED:
		qla4xxx_set_port_speed(shost);
		len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
		break;
	default:
		return -ENOSYS;
	}

	return len;
}

static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
{
	if (ha->iface_ipv4)
		return;

	/* IPv4 */
	ha->iface_ipv4 = iscsi_create_iface(ha->host,
					    &qla4xxx_iscsi_transport,
					    ISCSI_IFACE_TYPE_IPV4, 0, 0);
	if (!ha->iface_ipv4)
		ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
			   "iface0.\n");
}

static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
{
	if (!ha->iface_ipv6_0)
		/* IPv6 iface-0 */
		ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
						      &qla4xxx_iscsi_transport,
						      ISCSI_IFACE_TYPE_IPV6, 0,
						      0);
	if (!ha->iface_ipv6_0)
		ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
			   "iface0.\n");

	if (!ha->iface_ipv6_1)
		/* IPv6 iface-1 */
		ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
						      &qla4xxx_iscsi_transport,
						      ISCSI_IFACE_TYPE_IPV6, 1,
						      0);
	if (!ha->iface_ipv6_1)
		ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
			   "iface1.\n");
}

static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
{
	if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
		qla4xxx_create_ipv4_iface(ha);

	if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
		qla4xxx_create_ipv6_iface(ha);
}

static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
{
	if (ha->iface_ipv4) {
		iscsi_destroy_iface(ha->iface_ipv4);
		ha->iface_ipv4 = NULL;
	}
}

static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
{
	if (ha->iface_ipv6_0) {
		iscsi_destroy_iface(ha->iface_ipv6_0);
		ha->iface_ipv6_0 = NULL;
	}
	if (ha->iface_ipv6_1) {
		iscsi_destroy_iface(ha->iface_ipv6_1);
		ha->iface_ipv6_1 = NULL;
	}
}

static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
{
	qla4xxx_destroy_ipv4_iface(ha);
	qla4xxx_destroy_ipv6_iface(ha);
}

static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
			     struct iscsi_iface_param_info *iface_param,
			     struct addr_ctrl_blk *init_fw_cb)
{
	/*
	 * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
	 * iface_num 1 is valid only for IPv6 Addr.
	 */
	switch (iface_param->param) {
	case ISCSI_NET_PARAM_IPV6_ADDR:
		if (iface_param->iface_num & 0x1)
			/* IPv6 Addr 1 */
			memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
			       sizeof(init_fw_cb->ipv6_addr1));
		else
			/* IPv6 Addr 0 */
			memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
			       sizeof(init_fw_cb->ipv6_addr0));
		break;
	case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
		if (iface_param->iface_num & 0x1)
			break;
		memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
		       sizeof(init_fw_cb->ipv6_if_id));
		break;
	case ISCSI_NET_PARAM_IPV6_ROUTER:
		if (iface_param->iface_num & 0x1)
			break;
		memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
		       sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
		break;
	case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
		/* Autocfg applies to even interface */
		if (iface_param->iface_num & 0x1)
			break;

		if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
			init_fw_cb->ipv6_addtl_opts &=
				cpu_to_le16(
				  ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
		else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
			init_fw_cb->ipv6_addtl_opts |=
				cpu_to_le16(
				  IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
		else
			ql4_printk(KERN_ERR, ha,
				   "Invalid autocfg setting for IPv6 addr\n");
		break;
	case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
		/* Autocfg applies to even interface */
		if (iface_param->iface_num & 0x1)
			break;

		if (iface_param->value[0] ==
		    ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
			init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
					IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
		else if (iface_param->value[0] ==
			 ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
			init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
				       ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
		else
			ql4_printk(KERN_ERR, ha,
				   "Invalid autocfg setting for IPv6 linklocal addr\n");
		break;
	case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
		/* Autocfg applies to even interface */
		if (iface_param->iface_num & 0x1)
			break;

		if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
			memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
			       sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
		break;
	case ISCSI_NET_PARAM_IFACE_ENABLE:
		if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
			init_fw_cb->ipv6_opts |=
				cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
			qla4xxx_create_ipv6_iface(ha);
		} else {
			init_fw_cb->ipv6_opts &=
				cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
					    0xFFFF);
			qla4xxx_destroy_ipv6_iface(ha);
		}
		break;
	case ISCSI_NET_PARAM_VLAN_TAG:
		if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
			break;
		init_fw_cb->ipv6_vlan_tag =
				cpu_to_be16(*(uint16_t *)iface_param->value);
		break;
	case ISCSI_NET_PARAM_VLAN_ENABLED:
		if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
			init_fw_cb->ipv6_opts |=
				cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
		else
			init_fw_cb->ipv6_opts &=
				cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
		break;
	case ISCSI_NET_PARAM_MTU:
		init_fw_cb->eth_mtu_size =
				cpu_to_le16(*(uint16_t *)iface_param->value);
		break;
	case ISCSI_NET_PARAM_PORT:
		/* Autocfg applies to even interface */
		if (iface_param->iface_num & 0x1)
			break;

		init_fw_cb->ipv6_port =
				cpu_to_le16(*(uint16_t *)iface_param->value);
		break;
	case ISCSI_NET_PARAM_DELAYED_ACK_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
			init_fw_cb->ipv6_tcp_opts |=
				cpu_to_le16(IPV6_TCPOPT_DELAYED_ACK_DISABLE);
		else
			init_fw_cb->ipv6_tcp_opts &=
				cpu_to_le16(~IPV6_TCPOPT_DELAYED_ACK_DISABLE &
					    0xFFFF);
		break;
	case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
			init_fw_cb->ipv6_tcp_opts |=
				cpu_to_le16(IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
		else
			init_fw_cb->ipv6_tcp_opts &=
				cpu_to_le16(~IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
		break;
	case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
			init_fw_cb->ipv6_tcp_opts |=
				cpu_to_le16(IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
		else
			init_fw_cb->ipv6_tcp_opts &=
				cpu_to_le16(~IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
		break;
	case ISCSI_NET_PARAM_TCP_WSF:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_tcp_wsf = iface_param->value[0];
		break;
	case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_tcp_opts &=
					cpu_to_le16(~IPV6_TCPOPT_TIMER_SCALE);
		init_fw_cb->ipv6_tcp_opts |=
				cpu_to_le16((iface_param->value[0] << 1) &
					    IPV6_TCPOPT_TIMER_SCALE);
		break;
	case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv6_tcp_opts |=
				cpu_to_le16(IPV6_TCPOPT_TIMESTAMP_EN);
		else
			init_fw_cb->ipv6_tcp_opts &=
				cpu_to_le16(~IPV6_TCPOPT_TIMESTAMP_EN);
		break;
	case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv6_opts |=
				cpu_to_le16(IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
		else
			init_fw_cb->ipv6_opts &=
				cpu_to_le16(~IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
		break;
	case ISCSI_NET_PARAM_REDIRECT_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv6_opts |=
				cpu_to_le16(IPV6_OPT_REDIRECT_EN);
		else
			init_fw_cb->ipv6_opts &=
				cpu_to_le16(~IPV6_OPT_REDIRECT_EN);
		break;
	case ISCSI_NET_PARAM_IPV6_MLD_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv6_addtl_opts |=
				cpu_to_le16(IPV6_ADDOPT_MLD_EN);
		else
			init_fw_cb->ipv6_addtl_opts &=
				cpu_to_le16(~IPV6_ADDOPT_MLD_EN);
		break;
	case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_flow_lbl =
				cpu_to_le16(*(uint16_t *)iface_param->value);
		break;
	case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_traffic_class = iface_param->value[0];
		break;
	case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_hop_limit = iface_param->value[0];
		break;
	case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_nd_reach_time =
				cpu_to_le32(*(uint32_t *)iface_param->value);
		break;
	case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_nd_rexmit_timer =
				cpu_to_le32(*(uint32_t *)iface_param->value);
		break;
	case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_nd_stale_timeout =
				cpu_to_le32(*(uint32_t *)iface_param->value);
		break;
	case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_dup_addr_detect_count = iface_param->value[0];
		break;
	case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_gw_advrt_mtu =
				cpu_to_le32(*(uint32_t *)iface_param->value);
		break;
	default:
		ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
			   iface_param->param);
		break;
	}
}

static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
			     struct iscsi_iface_param_info *iface_param,
			     struct addr_ctrl_blk *init_fw_cb)
{
	switch (iface_param->param) {
	case ISCSI_NET_PARAM_IPV4_ADDR:
		memcpy(init_fw_cb->ipv4_addr, iface_param->value,
		       sizeof(init_fw_cb->ipv4_addr));
		break;
	case ISCSI_NET_PARAM_IPV4_SUBNET:
		memcpy(init_fw_cb->ipv4_subnet,	iface_param->value,
		       sizeof(init_fw_cb->ipv4_subnet));
		break;
	case ISCSI_NET_PARAM_IPV4_GW:
		memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
		       sizeof(init_fw_cb->ipv4_gw_addr));
		break;
	case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
		if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
			init_fw_cb->ipv4_tcp_opts |=
					cpu_to_le16(TCPOPT_DHCP_ENABLE);
		else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
			init_fw_cb->ipv4_tcp_opts &=
					cpu_to_le16(~TCPOPT_DHCP_ENABLE);
		else
			ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
		break;
	case ISCSI_NET_PARAM_IFACE_ENABLE:
		if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
			init_fw_cb->ipv4_ip_opts |=
				cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
			qla4xxx_create_ipv4_iface(ha);
		} else {
			init_fw_cb->ipv4_ip_opts &=
				cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
					    0xFFFF);
			qla4xxx_destroy_ipv4_iface(ha);
		}
		break;
	case ISCSI_NET_PARAM_VLAN_TAG:
		if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
			break;
		init_fw_cb->ipv4_vlan_tag =
				cpu_to_be16(*(uint16_t *)iface_param->value);
		break;
	case ISCSI_NET_PARAM_VLAN_ENABLED:
		if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
					cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
		else
			init_fw_cb->ipv4_ip_opts &=
					cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
		break;
	case ISCSI_NET_PARAM_MTU:
		init_fw_cb->eth_mtu_size =
				cpu_to_le16(*(uint16_t *)iface_param->value);
		break;
	case ISCSI_NET_PARAM_PORT:
		init_fw_cb->ipv4_port =
				cpu_to_le16(*(uint16_t *)iface_param->value);
		break;
	case ISCSI_NET_PARAM_DELAYED_ACK_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
			init_fw_cb->ipv4_tcp_opts |=
				cpu_to_le16(TCPOPT_DELAYED_ACK_DISABLE);
		else
			init_fw_cb->ipv4_tcp_opts &=
				cpu_to_le16(~TCPOPT_DELAYED_ACK_DISABLE &
					    0xFFFF);
		break;
	case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
			init_fw_cb->ipv4_tcp_opts |=
				cpu_to_le16(TCPOPT_NAGLE_ALGO_DISABLE);
		else
			init_fw_cb->ipv4_tcp_opts &=
				cpu_to_le16(~TCPOPT_NAGLE_ALGO_DISABLE);
		break;
	case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
			init_fw_cb->ipv4_tcp_opts |=
				cpu_to_le16(TCPOPT_WINDOW_SCALE_DISABLE);
		else
			init_fw_cb->ipv4_tcp_opts &=
				cpu_to_le16(~TCPOPT_WINDOW_SCALE_DISABLE);
		break;
	case ISCSI_NET_PARAM_TCP_WSF:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv4_tcp_wsf = iface_param->value[0];
		break;
	case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv4_tcp_opts &= cpu_to_le16(~TCPOPT_TIMER_SCALE);
		init_fw_cb->ipv4_tcp_opts |=
				cpu_to_le16((iface_param->value[0] << 1) &
					    TCPOPT_TIMER_SCALE);
		break;
	case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_tcp_opts |=
				cpu_to_le16(TCPOPT_TIMESTAMP_ENABLE);
		else
			init_fw_cb->ipv4_tcp_opts &=
				cpu_to_le16(~TCPOPT_TIMESTAMP_ENABLE);
		break;
	case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_tcp_opts |=
				cpu_to_le16(TCPOPT_DNS_SERVER_IP_EN);
		else
			init_fw_cb->ipv4_tcp_opts &=
				cpu_to_le16(~TCPOPT_DNS_SERVER_IP_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_tcp_opts |=
				cpu_to_le16(TCPOPT_SLP_DA_INFO_EN);
		else
			init_fw_cb->ipv4_tcp_opts &=
				cpu_to_le16(~TCPOPT_SLP_DA_INFO_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_TOS_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
				cpu_to_le16(IPOPT_IPV4_TOS_EN);
		else
			init_fw_cb->ipv4_ip_opts &=
				cpu_to_le16(~IPOPT_IPV4_TOS_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_TOS:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv4_tos = iface_param->value[0];
		break;
	case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
					cpu_to_le16(IPOPT_GRAT_ARP_EN);
		else
			init_fw_cb->ipv4_ip_opts &=
					cpu_to_le16(~IPOPT_GRAT_ARP_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
				cpu_to_le16(IPOPT_ALT_CID_EN);
		else
			init_fw_cb->ipv4_ip_opts &=
				cpu_to_le16(~IPOPT_ALT_CID_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
		if (iface_param->iface_num & 0x1)
			break;
		memcpy(init_fw_cb->ipv4_dhcp_alt_cid, iface_param->value,
		       (sizeof(init_fw_cb->ipv4_dhcp_alt_cid) - 1));
		init_fw_cb->ipv4_dhcp_alt_cid_len =
					strlen(init_fw_cb->ipv4_dhcp_alt_cid);
		break;
	case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
					cpu_to_le16(IPOPT_REQ_VID_EN);
		else
			init_fw_cb->ipv4_ip_opts &=
					cpu_to_le16(~IPOPT_REQ_VID_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
					cpu_to_le16(IPOPT_USE_VID_EN);
		else
			init_fw_cb->ipv4_ip_opts &=
					cpu_to_le16(~IPOPT_USE_VID_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
		if (iface_param->iface_num & 0x1)
			break;
		memcpy(init_fw_cb->ipv4_dhcp_vid, iface_param->value,
		       (sizeof(init_fw_cb->ipv4_dhcp_vid) - 1));
		init_fw_cb->ipv4_dhcp_vid_len =
					strlen(init_fw_cb->ipv4_dhcp_vid);
		break;
	case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
					cpu_to_le16(IPOPT_LEARN_IQN_EN);
		else
			init_fw_cb->ipv4_ip_opts &=
					cpu_to_le16(~IPOPT_LEARN_IQN_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
			init_fw_cb->ipv4_ip_opts |=
				cpu_to_le16(IPOPT_FRAGMENTATION_DISABLE);
		else
			init_fw_cb->ipv4_ip_opts &=
				cpu_to_le16(~IPOPT_FRAGMENTATION_DISABLE);
		break;
	case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
				cpu_to_le16(IPOPT_IN_FORWARD_EN);
		else
			init_fw_cb->ipv4_ip_opts &=
				cpu_to_le16(~IPOPT_IN_FORWARD_EN);
		break;
	case ISCSI_NET_PARAM_REDIRECT_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
				cpu_to_le16(IPOPT_ARP_REDIRECT_EN);
		else
			init_fw_cb->ipv4_ip_opts &=
				cpu_to_le16(~IPOPT_ARP_REDIRECT_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_TTL:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv4_ttl = iface_param->value[0];
		break;
	default:
		ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
			   iface_param->param);
		break;
	}
}

static void qla4xxx_set_iscsi_param(struct scsi_qla_host *ha,
				    struct iscsi_iface_param_info *iface_param,
				    struct addr_ctrl_blk *init_fw_cb)
{
	switch (iface_param->param) {
	case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->def_timeout =
				cpu_to_le16(*(uint16_t *)iface_param->value);
		break;
	case ISCSI_IFACE_PARAM_HDRDGST_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_HEADER_DIGEST_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_HEADER_DIGEST_EN);
		break;
	case ISCSI_IFACE_PARAM_DATADGST_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_DATA_DIGEST_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_DATA_DIGEST_EN);
		break;
	case ISCSI_IFACE_PARAM_IMM_DATA_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_IMMEDIATE_DATA_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_IMMEDIATE_DATA_EN);
		break;
	case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_INITIAL_R2T_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_INITIAL_R2T_EN);
		break;
	case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_DATA_SEQ_INORDER_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_DATA_SEQ_INORDER_EN);
		break;
	case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_DATA_PDU_INORDER_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_DATA_PDU_INORDER_EN);
		break;
	case ISCSI_IFACE_PARAM_ERL:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->iscsi_opts &= cpu_to_le16(~ISCSIOPTS_ERL);
		init_fw_cb->iscsi_opts |= cpu_to_le16(iface_param->value[0] &
						      ISCSIOPTS_ERL);
		break;
	case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->iscsi_max_pdu_size =
				cpu_to_le32(*(uint32_t *)iface_param->value) /
				BYTE_UNITS;
		break;
	case ISCSI_IFACE_PARAM_FIRST_BURST:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->iscsi_fburst_len =
				cpu_to_le32(*(uint32_t *)iface_param->value) /
				BYTE_UNITS;
		break;
	case ISCSI_IFACE_PARAM_MAX_R2T:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->iscsi_max_outstnd_r2t =
				cpu_to_le16(*(uint16_t *)iface_param->value);
		break;
	case ISCSI_IFACE_PARAM_MAX_BURST:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->iscsi_max_burst_len =
				cpu_to_le32(*(uint32_t *)iface_param->value) /
				BYTE_UNITS;
		break;
	case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_CHAP_AUTH_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_CHAP_AUTH_EN);
		break;
	case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_BIDI_CHAP_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_BIDI_CHAP_EN);
		break;
	case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_DISCOVERY_AUTH_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_DISCOVERY_AUTH_EN);
		break;
	case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_DISCOVERY_LOGOUT_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_DISCOVERY_LOGOUT_EN);
		break;
	case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_STRICT_LOGIN_COMP_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_STRICT_LOGIN_COMP_EN);
		break;
	default:
		ql4_printk(KERN_ERR, ha, "Unknown iscsi param = %d\n",
			   iface_param->param);
		break;
	}
}

static void
qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
{
	struct addr_ctrl_blk_def *acb;
	acb = (struct addr_ctrl_blk_def *)init_fw_cb;
	memset(acb->reserved1, 0, sizeof(acb->reserved1));
	memset(acb->reserved2, 0, sizeof(acb->reserved2));
	memset(acb->reserved3, 0, sizeof(acb->reserved3));
	memset(acb->reserved4, 0, sizeof(acb->reserved4));
	memset(acb->reserved5, 0, sizeof(acb->reserved5));
	memset(acb->reserved6, 0, sizeof(acb->reserved6));
	memset(acb->reserved7, 0, sizeof(acb->reserved7));
	memset(acb->reserved8, 0, sizeof(acb->reserved8));
	memset(acb->reserved9, 0, sizeof(acb->reserved9));
	memset(acb->reserved10, 0, sizeof(acb->reserved10));
	memset(acb->reserved11, 0, sizeof(acb->reserved11));
	memset(acb->reserved12, 0, sizeof(acb->reserved12));
	memset(acb->reserved13, 0, sizeof(acb->reserved13));
	memset(acb->reserved14, 0, sizeof(acb->reserved14));
	memset(acb->reserved15, 0, sizeof(acb->reserved15));
}

static int
qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	int rval = 0;
	struct iscsi_iface_param_info *iface_param = NULL;
	struct addr_ctrl_blk *init_fw_cb = NULL;
	dma_addr_t init_fw_cb_dma;
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];
	uint32_t rem = len;
	struct nlattr *attr;

	init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
					sizeof(struct addr_ctrl_blk),
					&init_fw_cb_dma, GFP_KERNEL);
	if (!init_fw_cb) {
		ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
			   __func__);
		return -ENOMEM;
	}

	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));

	if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
		ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
		rval = -EIO;
		goto exit_init_fw_cb;
	}

	nla_for_each_attr(attr, data, len, rem) {
		iface_param = nla_data(attr);

		if (iface_param->param_type == ISCSI_NET_PARAM) {
			switch (iface_param->iface_type) {
			case ISCSI_IFACE_TYPE_IPV4:
				switch (iface_param->iface_num) {
				case 0:
					qla4xxx_set_ipv4(ha, iface_param,
							 init_fw_cb);
					break;
				default:
				/* Cannot have more than one IPv4 interface */
					ql4_printk(KERN_ERR, ha,
						   "Invalid IPv4 iface number = %d\n",
						   iface_param->iface_num);
					break;
				}
				break;
			case ISCSI_IFACE_TYPE_IPV6:
				switch (iface_param->iface_num) {
				case 0:
				case 1:
					qla4xxx_set_ipv6(ha, iface_param,
							 init_fw_cb);
					break;
				default:
				/* Cannot have more than two IPv6 interface */
					ql4_printk(KERN_ERR, ha,
						   "Invalid IPv6 iface number = %d\n",
						   iface_param->iface_num);
					break;
				}
				break;
			default:
				ql4_printk(KERN_ERR, ha,
					   "Invalid iface type\n");
				break;
			}
		} else if (iface_param->param_type == ISCSI_IFACE_PARAM) {
				qla4xxx_set_iscsi_param(ha, iface_param,
							init_fw_cb);
		} else {
			continue;
		}
	}

	init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);

	rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
				 sizeof(struct addr_ctrl_blk),
				 FLASH_OPT_RMW_COMMIT);
	if (rval != QLA_SUCCESS) {
		ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
			   __func__);
		rval = -EIO;
		goto exit_init_fw_cb;
	}

	rval = qla4xxx_disable_acb(ha);
	if (rval != QLA_SUCCESS) {
		ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
			   __func__);
		rval = -EIO;
		goto exit_init_fw_cb;
	}

	wait_for_completion_timeout(&ha->disable_acb_comp,
				    DISABLE_ACB_TOV * HZ);

	qla4xxx_initcb_to_acb(init_fw_cb);

	rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
	if (rval != QLA_SUCCESS) {
		ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
			   __func__);
		rval = -EIO;
		goto exit_init_fw_cb;
	}

	memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
	qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
				  init_fw_cb_dma);

exit_init_fw_cb:
	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
			  init_fw_cb, init_fw_cb_dma);

	return rval;
}

static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
				     enum iscsi_param param, char *buf)
{
	struct iscsi_session *sess = cls_sess->dd_data;
	struct ddb_entry *ddb_entry = sess->dd_data;
	struct scsi_qla_host *ha = ddb_entry->ha;
	struct iscsi_cls_conn *cls_conn = ddb_entry->conn;
	struct ql4_chap_table chap_tbl;
	int rval, len;
	uint16_t idx;

	memset(&chap_tbl, 0, sizeof(chap_tbl));
	switch (param) {
	case ISCSI_PARAM_CHAP_IN_IDX:
		rval = qla4xxx_get_chap_index(ha, sess->username_in,
					      sess->password_in, BIDI_CHAP,
					      &idx);
		if (rval)
			len = sprintf(buf, "\n");
		else
			len = sprintf(buf, "%hu\n", idx);
		break;
	case ISCSI_PARAM_CHAP_OUT_IDX:
		if (ddb_entry->ddb_type == FLASH_DDB) {
			if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
				idx = ddb_entry->chap_tbl_idx;
				rval = QLA_SUCCESS;
			} else {
				rval = QLA_ERROR;
			}
		} else {
			rval = qla4xxx_get_chap_index(ha, sess->username,
						      sess->password,
						      LOCAL_CHAP, &idx);
		}
		if (rval)
			len = sprintf(buf, "\n");
		else
			len = sprintf(buf, "%hu\n", idx);
		break;
	case ISCSI_PARAM_USERNAME:
	case ISCSI_PARAM_PASSWORD:
		/* First, populate session username and password for FLASH DDB,
		 * if not already done. This happens when session login fails
		 * for a FLASH DDB.
		 */
		if (ddb_entry->ddb_type == FLASH_DDB &&
		    ddb_entry->chap_tbl_idx != INVALID_ENTRY &&
		    !sess->username && !sess->password) {
			idx = ddb_entry->chap_tbl_idx;
			rval = qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
							    chap_tbl.secret,
							    idx);
			if (!rval) {
				iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
						(char *)chap_tbl.name,
						strlen((char *)chap_tbl.name));
				iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
						(char *)chap_tbl.secret,
						chap_tbl.secret_len);
			}
		}
		/* allow fall-through */
	default:
		return iscsi_session_get_param(cls_sess, param, buf);
	}

	return len;
}

static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
				  enum iscsi_param param, char *buf)
{
	struct iscsi_conn *conn;
	struct qla_conn *qla_conn;
	struct sockaddr *dst_addr;

	conn = cls_conn->dd_data;
	qla_conn = conn->dd_data;
	dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;

	switch (param) {
	case ISCSI_PARAM_CONN_PORT:
	case ISCSI_PARAM_CONN_ADDRESS:
		return iscsi_conn_get_addr_param((struct sockaddr_storage *)
						 dst_addr, param, buf);
	default:
		return iscsi_conn_get_param(cls_conn, param, buf);
	}
}

int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
{
	uint32_t mbx_sts = 0;
	uint16_t tmp_ddb_index;
	int ret;

get_ddb_index:
	tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);

	if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
		DEBUG2(ql4_printk(KERN_INFO, ha,
				  "Free DDB index not available\n"));
		ret = QLA_ERROR;
		goto exit_get_ddb_index;
	}

	if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
		goto get_ddb_index;

	DEBUG2(ql4_printk(KERN_INFO, ha,
			  "Found a free DDB index at %d\n", tmp_ddb_index));
	ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
	if (ret == QLA_ERROR) {
		if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
			ql4_printk(KERN_INFO, ha,
				   "DDB index = %d not available trying next\n",
				   tmp_ddb_index);
			goto get_ddb_index;
		}
		DEBUG2(ql4_printk(KERN_INFO, ha,
				  "Free FW DDB not available\n"));
	}

	*ddb_index = tmp_ddb_index;

exit_get_ddb_index:
	return ret;
}

static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
				   struct ddb_entry *ddb_entry,
				   char *existing_ipaddr,
				   char *user_ipaddr)
{
	uint8_t dst_ipaddr[IPv6_ADDR_LEN];
	char formatted_ipaddr[DDB_IPADDR_LEN];
	int status = QLA_SUCCESS, ret = 0;

	if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
		ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
			       '\0', NULL);
		if (ret == 0) {
			status = QLA_ERROR;
			goto out_match;
		}
		ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
	} else {
		ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
			       '\0', NULL);
		if (ret == 0) {
			status = QLA_ERROR;
			goto out_match;
		}
		ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
	}

	if (strcmp(existing_ipaddr, formatted_ipaddr))
		status = QLA_ERROR;

out_match:
	return status;
}

static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
				      struct iscsi_cls_conn *cls_conn)
{
	int idx = 0, max_ddbs, rval;
	struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
	struct iscsi_session *sess, *existing_sess;
	struct iscsi_conn *conn, *existing_conn;
	struct ddb_entry *ddb_entry;

	sess = cls_sess->dd_data;
	conn = cls_conn->dd_data;

	if (sess->targetname == NULL ||
	    conn->persistent_address == NULL ||
	    conn->persistent_port == 0)
		return QLA_ERROR;

	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
				     MAX_DEV_DB_ENTRIES;

	for (idx = 0; idx < max_ddbs; idx++) {
		ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
		if (ddb_entry == NULL)
			continue;

		if (ddb_entry->ddb_type != FLASH_DDB)
			continue;

		existing_sess = ddb_entry->sess->dd_data;
		existing_conn = ddb_entry->conn->dd_data;

		if (existing_sess->targetname == NULL ||
		    existing_conn->persistent_address == NULL ||
		    existing_conn->persistent_port == 0)
			continue;

		DEBUG2(ql4_printk(KERN_INFO, ha,
				  "IQN = %s User IQN = %s\n",
				  existing_sess->targetname,
				  sess->targetname));

		DEBUG2(ql4_printk(KERN_INFO, ha,
				  "IP = %s User IP = %s\n",
				  existing_conn->persistent_address,
				  conn->persistent_address));

		DEBUG2(ql4_printk(KERN_INFO, ha,
				  "Port = %d User Port = %d\n",
				  existing_conn->persistent_port,
				  conn->persistent_port));

		if (strcmp(existing_sess->targetname, sess->targetname))
			continue;
		rval = qla4xxx_match_ipaddress(ha, ddb_entry,
					existing_conn->persistent_address,
					conn->persistent_address);
		if (rval == QLA_ERROR)
			continue;
		if (existing_conn->persistent_port != conn->persistent_port)
			continue;
		break;
	}

	if (idx == max_ddbs)
		return QLA_ERROR;

	DEBUG2(ql4_printk(KERN_INFO, ha,
			  "Match found in fwdb sessions\n"));
	return QLA_SUCCESS;
}

static struct iscsi_cls_session *
qla4xxx_session_create(struct iscsi_endpoint *ep,
			uint16_t cmds_max, uint16_t qdepth,
			uint32_t initial_cmdsn)
{
	struct iscsi_cls_session *cls_sess;
	struct scsi_qla_host *ha;
	struct qla_endpoint *qla_ep;
	struct ddb_entry *ddb_entry;
	uint16_t ddb_index;
	struct iscsi_session *sess;
	struct sockaddr *dst_addr;
	int ret;

	if (!ep) {
		printk(KERN_ERR "qla4xxx: missing ep.\n");
		return NULL;
	}

	qla_ep = ep->dd_data;
	dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
	ha = to_qla_host(qla_ep->host);
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
			  ha->host_no));

	ret = qla4xxx_get_ddb_index(ha, &ddb_index);
	if (ret == QLA_ERROR)
		return NULL;

	cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
				       cmds_max, sizeof(struct ddb_entry),
				       sizeof(struct ql4_task_data),
				       initial_cmdsn, ddb_index);
	if (!cls_sess)
		return NULL;

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ddb_entry->fw_ddb_index = ddb_index;
	ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
	ddb_entry->ha = ha;
	ddb_entry->sess = cls_sess;
	ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
	ddb_entry->ddb_change = qla4xxx_ddb_change;
	clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags);
	cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
	ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
	ha->tot_ddbs++;

	return cls_sess;
}

static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
{
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;
	unsigned long flags, wtime;
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	uint32_t ddb_state;
	int ret;

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
			  ha->host_no));

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to allocate dma buffer\n", __func__);
		goto destroy_session;
	}

	wtime = jiffies + (HZ * LOGOUT_TOV);
	do {
		ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
					      fw_ddb_entry, fw_ddb_entry_dma,
					      NULL, NULL, &ddb_state, NULL,
					      NULL, NULL);
		if (ret == QLA_ERROR)
			goto destroy_session;

		if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
		    (ddb_state == DDB_DS_SESSION_FAILED))
			goto destroy_session;

		schedule_timeout_uninterruptible(HZ);
	} while ((time_after(wtime, jiffies)));

destroy_session:
	qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
	if (test_and_clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags))
		clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
	spin_lock_irqsave(&ha->hardware_lock, flags);
	qla4xxx_free_ddb(ha, ddb_entry);
	spin_unlock_irqrestore(&ha->hardware_lock, flags);

	iscsi_session_teardown(cls_sess);

	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
}

static struct iscsi_cls_conn *
qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
{
	struct iscsi_cls_conn *cls_conn;
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;

	cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
				    conn_idx);
	if (!cls_conn) {
		pr_info("%s: Can not create connection for conn_idx = %u\n",
			__func__, conn_idx);
		return NULL;
	}

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ddb_entry->conn = cls_conn;

	ha = ddb_entry->ha;
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: conn_idx = %u\n", __func__,
			  conn_idx));
	return cls_conn;
}

static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
			     struct iscsi_cls_conn *cls_conn,
			     uint64_t transport_fd, int is_leading)
{
	struct iscsi_conn *conn;
	struct qla_conn *qla_conn;
	struct iscsi_endpoint *ep;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;
	struct iscsi_session *sess;

	sess = cls_session->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;

	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
			  cls_session->sid, cls_conn->cid));

	if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
		return -EINVAL;
	ep = iscsi_lookup_endpoint(transport_fd);
	conn = cls_conn->dd_data;
	qla_conn = conn->dd_data;
	qla_conn->qla_ep = ep->dd_data;
	return 0;
}

static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
{
	struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	uint32_t mbx_sts = 0;
	int ret = 0;
	int status = QLA_SUCCESS;

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
			  cls_sess->sid, cls_conn->cid));

	/* Check if we have  matching FW DDB, if yes then do not
	 * login to this target. This could cause target to logout previous
	 * connection
	 */
	ret = qla4xxx_match_fwdb_session(ha, cls_conn);
	if (ret == QLA_SUCCESS) {
		ql4_printk(KERN_INFO, ha,
			   "Session already exist in FW.\n");
		ret = -EEXIST;
		goto exit_conn_start;
	}

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to allocate dma buffer\n", __func__);
		ret = -ENOMEM;
		goto exit_conn_start;
	}

	ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
	if (ret) {
		/* If iscsid is stopped and started then no need to do
		* set param again since ddb state will be already
		* active and FW does not allow set ddb to an
		* active session.
		*/
		if (mbx_sts)
			if (ddb_entry->fw_ddb_device_state ==
						DDB_DS_SESSION_ACTIVE) {
				ddb_entry->unblock_sess(ddb_entry->sess);
				goto exit_set_param;
			}

		ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
			   __func__, ddb_entry->fw_ddb_index);
		goto exit_conn_start;
	}

	status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
	if (status == QLA_ERROR) {
		ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
			   sess->targetname);
		ret = -EINVAL;
		goto exit_conn_start;
	}

	if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
		ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;

	DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
		      ddb_entry->fw_ddb_device_state));

exit_set_param:
	ret = 0;

exit_conn_start:
	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
	return ret;
}

static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
{
	struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
	struct iscsi_session *sess;
	struct scsi_qla_host *ha;
	struct ddb_entry *ddb_entry;
	int options;

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: cid = %d\n", __func__,
			  cls_conn->cid));

	options = LOGOUT_OPTION_CLOSE_SESSION;
	if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
		ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
}

static void qla4xxx_task_work(struct work_struct *wdata)
{
	struct ql4_task_data *task_data;
	struct scsi_qla_host *ha;
	struct passthru_status *sts;
	struct iscsi_task *task;
	struct iscsi_hdr *hdr;
	uint8_t *data;
	uint32_t data_len;
	struct iscsi_conn *conn;
	int hdr_len;
	itt_t itt;

	task_data = container_of(wdata, struct ql4_task_data, task_work);
	ha = task_data->ha;
	task = task_data->task;
	sts = &task_data->sts;
	hdr_len = sizeof(struct iscsi_hdr);

	DEBUG3(printk(KERN_INFO "Status returned\n"));
	DEBUG3(qla4xxx_dump_buffer(sts, 64));
	DEBUG3(printk(KERN_INFO "Response buffer"));
	DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));

	conn = task->conn;

	switch (sts->completionStatus) {
	case PASSTHRU_STATUS_COMPLETE:
		hdr = (struct iscsi_hdr *)task_data->resp_buffer;
		/* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
		itt = sts->handle;
		hdr->itt = itt;
		data = task_data->resp_buffer + hdr_len;
		data_len = task_data->resp_len - hdr_len;
		iscsi_complete_pdu(conn, hdr, data, data_len);
		break;
	default:
		ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
			   sts->completionStatus);
		break;
	}
	return;
}

static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
{
	struct ql4_task_data *task_data;
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;
	int hdr_len;

	sess = task->conn->session;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
	task_data = task->dd_data;
	memset(task_data, 0, sizeof(struct ql4_task_data));

	if (task->sc) {
		ql4_printk(KERN_INFO, ha,
			   "%s: SCSI Commands not implemented\n", __func__);
		return -EINVAL;
	}

	hdr_len = sizeof(struct iscsi_hdr);
	task_data->ha = ha;
	task_data->task = task;

	if (task->data_count) {
		task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
						     task->data_count,
						     DMA_TO_DEVICE);
	}

	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
		      __func__, task->conn->max_recv_dlength, hdr_len));

	task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
	task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
						    task_data->resp_len,
						    &task_data->resp_dma,
						    GFP_ATOMIC);
	if (!task_data->resp_buffer)
		goto exit_alloc_pdu;

	task_data->req_len = task->data_count + hdr_len;
	task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
						   task_data->req_len,
						   &task_data->req_dma,
						   GFP_ATOMIC);
	if (!task_data->req_buffer)
		goto exit_alloc_pdu;

	task->hdr = task_data->req_buffer;

	INIT_WORK(&task_data->task_work, qla4xxx_task_work);

	return 0;

exit_alloc_pdu:
	if (task_data->resp_buffer)
		dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
				  task_data->resp_buffer, task_data->resp_dma);

	if (task_data->req_buffer)
		dma_free_coherent(&ha->pdev->dev, task_data->req_len,
				  task_data->req_buffer, task_data->req_dma);
	return -ENOMEM;
}

static void qla4xxx_task_cleanup(struct iscsi_task *task)
{
	struct ql4_task_data *task_data;
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;
	int hdr_len;

	hdr_len = sizeof(struct iscsi_hdr);
	sess = task->conn->session;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
	task_data = task->dd_data;

	if (task->data_count) {
		dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
				 task->data_count, DMA_TO_DEVICE);
	}

	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
		      __func__, task->conn->max_recv_dlength, hdr_len));

	dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
			  task_data->resp_buffer, task_data->resp_dma);
	dma_free_coherent(&ha->pdev->dev, task_data->req_len,
			  task_data->req_buffer, task_data->req_dma);
	return;
}

static int qla4xxx_task_xmit(struct iscsi_task *task)
{
	struct scsi_cmnd *sc = task->sc;
	struct iscsi_session *sess = task->conn->session;
	struct ddb_entry *ddb_entry = sess->dd_data;
	struct scsi_qla_host *ha = ddb_entry->ha;

	if (!sc)
		return qla4xxx_send_passthru0(task);

	ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
		   __func__);
	return -ENOSYS;
}

static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
					 struct iscsi_bus_flash_conn *conn,
					 struct dev_db_entry *fw_ddb_entry)
{
	unsigned long options = 0;
	int rc = 0;

	options = le16_to_cpu(fw_ddb_entry->options);
	conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
	if (test_bit(OPT_IPV6_DEVICE, &options)) {
		rc = iscsi_switch_str_param(&sess->portal_type,
					    PORTAL_TYPE_IPV6);
		if (rc)
			goto exit_copy;
	} else {
		rc = iscsi_switch_str_param(&sess->portal_type,
					    PORTAL_TYPE_IPV4);
		if (rc)
			goto exit_copy;
	}

	sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
					      &options);
	sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
	sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);

	options = le16_to_cpu(fw_ddb_entry->iscsi_options);
	conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
	conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
	sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
	sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
	sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
					    &options);
	sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
	sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
	conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
	sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
					     &options);
	sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
	sess->discovery_auth_optional =
			test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
	if (test_bit(ISCSIOPT_ERL1, &options))
		sess->erl |= BIT_1;
	if (test_bit(ISCSIOPT_ERL0, &options))
		sess->erl |= BIT_0;

	options = le16_to_cpu(fw_ddb_entry->tcp_options);
	conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
	conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
	conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
	if (test_bit(TCPOPT_TIMER_SCALE3, &options))
		conn->tcp_timer_scale |= BIT_3;
	if (test_bit(TCPOPT_TIMER_SCALE2, &options))
		conn->tcp_timer_scale |= BIT_2;
	if (test_bit(TCPOPT_TIMER_SCALE1, &options))
		conn->tcp_timer_scale |= BIT_1;

	conn->tcp_timer_scale >>= 1;
	conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);

	options = le16_to_cpu(fw_ddb_entry->ip_options);
	conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);

	conn->max_recv_dlength = BYTE_UNITS *
			  le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
	conn->max_xmit_dlength = BYTE_UNITS *
			  le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
	sess->first_burst = BYTE_UNITS *
			       le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
	sess->max_burst = BYTE_UNITS *
				 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
	sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
	sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
	sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
	sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
	conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
	conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
	conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
	conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
	conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
	conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
	conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
	conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
	sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
	sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
	sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
	sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);

	sess->default_taskmgmt_timeout =
				le16_to_cpu(fw_ddb_entry->def_timeout);
	conn->port = le16_to_cpu(fw_ddb_entry->port);

	options = le16_to_cpu(fw_ddb_entry->options);
	conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
	if (!conn->ipaddress) {
		rc = -ENOMEM;
		goto exit_copy;
	}

	conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
	if (!conn->redirect_ipaddr) {
		rc = -ENOMEM;
		goto exit_copy;
	}

	memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
	memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);

	if (test_bit(OPT_IPV6_DEVICE, &options)) {
		conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;

		conn->link_local_ipv6_addr = kmemdup(
					fw_ddb_entry->link_local_ipv6_addr,
					IPv6_ADDR_LEN, GFP_KERNEL);
		if (!conn->link_local_ipv6_addr) {
			rc = -ENOMEM;
			goto exit_copy;
		}
	} else {
		conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
	}

	if (fw_ddb_entry->iscsi_name[0]) {
		rc = iscsi_switch_str_param(&sess->targetname,
					    (char *)fw_ddb_entry->iscsi_name);
		if (rc)
			goto exit_copy;
	}

	if (fw_ddb_entry->iscsi_alias[0]) {
		rc = iscsi_switch_str_param(&sess->targetalias,
					    (char *)fw_ddb_entry->iscsi_alias);
		if (rc)
			goto exit_copy;
	}

	COPY_ISID(sess->isid, fw_ddb_entry->isid);

exit_copy:
	return rc;
}

static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
				       struct iscsi_bus_flash_conn *conn,
				       struct dev_db_entry *fw_ddb_entry)
{
	uint16_t options;
	int rc = 0;

	options = le16_to_cpu(fw_ddb_entry->options);
	SET_BITVAL(conn->is_fw_assigned_ipv6,  options, BIT_11);
	if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
		options |= BIT_8;
	else
		options &= ~BIT_8;

	SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
	SET_BITVAL(sess->discovery_sess, options, BIT_4);
	SET_BITVAL(sess->entry_state, options, BIT_3);
	fw_ddb_entry->options = cpu_to_le16(options);

	options = le16_to_cpu(fw_ddb_entry->iscsi_options);
	SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
	SET_BITVAL(conn->datadgst_en, options, BIT_12);
	SET_BITVAL(sess->imm_data_en, options, BIT_11);
	SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
	SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
	SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
	SET_BITVAL(sess->chap_auth_en, options, BIT_7);
	SET_BITVAL(conn->snack_req_en, options, BIT_6);
	SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
	SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
	SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
	SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
	SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
	fw_ddb_entry->iscsi_options = cpu_to_le16(options);

	options = le16_to_cpu(fw_ddb_entry->tcp_options);
	SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
	SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
	SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
	SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
	SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
	SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
	SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
	fw_ddb_entry->tcp_options = cpu_to_le16(options);

	options = le16_to_cpu(fw_ddb_entry->ip_options);
	SET_BITVAL(conn->fragment_disable, options, BIT_4);
	fw_ddb_entry->ip_options = cpu_to_le16(options);

	fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
	fw_ddb_entry->iscsi_max_rcv_data_seg_len =
			       cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
	fw_ddb_entry->iscsi_max_snd_data_seg_len =
			       cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
	fw_ddb_entry->iscsi_first_burst_len =
				cpu_to_le16(sess->first_burst / BYTE_UNITS);
	fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
					    BYTE_UNITS);
	fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
	fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
	fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
	fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
	fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
	fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
	fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
	fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
	fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
	fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
	fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
	fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_idx);
	fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
	fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
	fw_ddb_entry->port = cpu_to_le16(conn->port);
	fw_ddb_entry->def_timeout =
				cpu_to_le16(sess->default_taskmgmt_timeout);

	if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
		fw_ddb_entry->ipv4_tos = conn->ipv6_traffic_class;
	else
		fw_ddb_entry->ipv4_tos = conn->ipv4_tos;

	if (conn->ipaddress)
		memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
		       sizeof(fw_ddb_entry->ip_addr));

	if (conn->redirect_ipaddr)
		memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
		       sizeof(fw_ddb_entry->tgt_addr));

	if (conn->link_local_ipv6_addr)
		memcpy(fw_ddb_entry->link_local_ipv6_addr,
		       conn->link_local_ipv6_addr,
		       sizeof(fw_ddb_entry->link_local_ipv6_addr));

	if (sess->targetname)
		memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
		       sizeof(fw_ddb_entry->iscsi_name));

	if (sess->targetalias)
		memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
		       sizeof(fw_ddb_entry->iscsi_alias));

	COPY_ISID(fw_ddb_entry->isid, sess->isid);

	return rc;
}

static void qla4xxx_copy_to_sess_conn_params(struct iscsi_conn *conn,
					     struct iscsi_session *sess,
					     struct dev_db_entry *fw_ddb_entry)
{
	unsigned long options = 0;
	uint16_t ddb_link;
	uint16_t disc_parent;
	char ip_addr[DDB_IPADDR_LEN];

	options = le16_to_cpu(fw_ddb_entry->options);
	conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
	sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
					      &options);
	sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);

	options = le16_to_cpu(fw_ddb_entry->iscsi_options);
	conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
	conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
	sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
	sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
	sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
					    &options);
	sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
	sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
	sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
					     &options);
	sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
	sess->discovery_auth_optional =
			test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
	if (test_bit(ISCSIOPT_ERL1, &options))
		sess->erl |= BIT_1;
	if (test_bit(ISCSIOPT_ERL0, &options))
		sess->erl |= BIT_0;

	options = le16_to_cpu(fw_ddb_entry->tcp_options);
	conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
	conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
	conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
	if (test_bit(TCPOPT_TIMER_SCALE3, &options))
		conn->tcp_timer_scale |= BIT_3;
	if (test_bit(TCPOPT_TIMER_SCALE2, &options))
		conn->tcp_timer_scale |= BIT_2;
	if (test_bit(TCPOPT_TIMER_SCALE1, &options))
		conn->tcp_timer_scale |= BIT_1;

	conn->tcp_timer_scale >>= 1;
	conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);

	options = le16_to_cpu(fw_ddb_entry->ip_options);
	conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);

	conn->max_recv_dlength = BYTE_UNITS *
			  le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
	conn->max_xmit_dlength = BYTE_UNITS *
			  le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
	sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
	sess->first_burst = BYTE_UNITS *
			       le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
	sess->max_burst = BYTE_UNITS *
				 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
	sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
	sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
	sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
	conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
	conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
	conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
	conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
	conn->keepalive_tmo = le16_to_cpu(fw_ddb_entry->ka_timeout);
	conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
	conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
	conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
	sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
	COPY_ISID(sess->isid, fw_ddb_entry->isid);

	ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
	if (ddb_link == DDB_ISNS)
		disc_parent = ISCSI_DISC_PARENT_ISNS;
	else if (ddb_link == DDB_NO_LINK)
		disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
	else if (ddb_link < MAX_DDB_ENTRIES)
		disc_parent = ISCSI_DISC_PARENT_SENDTGT;
	else
		disc_parent = ISCSI_DISC_PARENT_UNKNOWN;

	iscsi_set_param(conn->cls_conn, ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
			iscsi_get_discovery_parent_name(disc_parent), 0);

	iscsi_set_param(conn->cls_conn, ISCSI_PARAM_TARGET_ALIAS,
			(char *)fw_ddb_entry->iscsi_alias, 0);

	options = le16_to_cpu(fw_ddb_entry->options);
	if (options & DDB_OPT_IPV6_DEVICE) {
		memset(ip_addr, 0, sizeof(ip_addr));
		sprintf(ip_addr, "%pI6", fw_ddb_entry->link_local_ipv6_addr);
		iscsi_set_param(conn->cls_conn, ISCSI_PARAM_LOCAL_IPADDR,
				(char *)ip_addr, 0);
	}
}

static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
				     struct dev_db_entry *fw_ddb_entry,
				     struct iscsi_cls_session *cls_sess,
				     struct iscsi_cls_conn *cls_conn)
{
	int buflen = 0;
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct ql4_chap_table chap_tbl;
	struct iscsi_conn *conn;
	char ip_addr[DDB_IPADDR_LEN];
	uint16_t options = 0;

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	conn = cls_conn->dd_data;
	memset(&chap_tbl, 0, sizeof(chap_tbl));

	ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);

	qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);

	sess->def_taskmgmt_tmo = le16_to_cpu(fw_ddb_entry->def_timeout);
	conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);

	memset(ip_addr, 0, sizeof(ip_addr));
	options = le16_to_cpu(fw_ddb_entry->options);
	if (options & DDB_OPT_IPV6_DEVICE) {
		iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv6", 4);

		memset(ip_addr, 0, sizeof(ip_addr));
		sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
	} else {
		iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv4", 4);
		sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
	}

	iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
			(char *)ip_addr, buflen);
	iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
			(char *)fw_ddb_entry->iscsi_name, buflen);
	iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
			(char *)ha->name_string, buflen);

	if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
		if (!qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
						   chap_tbl.secret,
						   ddb_entry->chap_tbl_idx)) {
			iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
					(char *)chap_tbl.name,
					strlen((char *)chap_tbl.name));
			iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
					(char *)chap_tbl.secret,
					chap_tbl.secret_len);
		}
	}
}

void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
					     struct ddb_entry *ddb_entry)
{
	struct iscsi_cls_session *cls_sess;
	struct iscsi_cls_conn *cls_conn;
	uint32_t ddb_state;
	dma_addr_t fw_ddb_entry_dma;
	struct dev_db_entry *fw_ddb_entry;

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to allocate dma buffer\n", __func__);
		goto exit_session_conn_fwddb_param;
	}

	if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
				    fw_ddb_entry_dma, NULL, NULL, &ddb_state,
				    NULL, NULL, NULL) == QLA_ERROR) {
		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
				  "get_ddb_entry for fw_ddb_index %d\n",
				  ha->host_no, __func__,
				  ddb_entry->fw_ddb_index));
		goto exit_session_conn_fwddb_param;
	}

	cls_sess = ddb_entry->sess;

	cls_conn = ddb_entry->conn;

	/* Update params */
	qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);

exit_session_conn_fwddb_param:
	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
}

void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
				       struct ddb_entry *ddb_entry)
{
	struct iscsi_cls_session *cls_sess;
	struct iscsi_cls_conn *cls_conn;
	struct iscsi_session *sess;
	struct iscsi_conn *conn;
	uint32_t ddb_state;
	dma_addr_t fw_ddb_entry_dma;
	struct dev_db_entry *fw_ddb_entry;

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to allocate dma buffer\n", __func__);
		goto exit_session_conn_param;
	}

	if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
				    fw_ddb_entry_dma, NULL, NULL, &ddb_state,
				    NULL, NULL, NULL) == QLA_ERROR) {
		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
				  "get_ddb_entry for fw_ddb_index %d\n",
				  ha->host_no, __func__,
				  ddb_entry->fw_ddb_index));
		goto exit_session_conn_param;
	}

	cls_sess = ddb_entry->sess;
	sess = cls_sess->dd_data;

	cls_conn = ddb_entry->conn;
	conn = cls_conn->dd_data;

	/* Update timers after login */
	ddb_entry->default_relogin_timeout =
		(le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
		 (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
		 le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
	ddb_entry->default_time2wait =
				le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);

	/* Update params */
	ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
	qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);

	memcpy(sess->initiatorname, ha->name_string,
	       min(sizeof(ha->name_string), sizeof(sess->initiatorname)));

exit_session_conn_param:
	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
}

/*
 * Timer routines
 */
static void qla4xxx_timer(struct timer_list *t);

static void qla4xxx_start_timer(struct scsi_qla_host *ha,
				unsigned long interval)
{
	DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
		     __func__, ha->host->host_no));
	timer_setup(&ha->timer, qla4xxx_timer, 0);
	ha->timer.expires = jiffies + interval * HZ;
	add_timer(&ha->timer);
	ha->timer_active = 1;
}

static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
{
	del_timer_sync(&ha->timer);
	ha->timer_active = 0;
}

/***
 * qla4xxx_mark_device_missing - blocks the session
 * @cls_session: Pointer to the session to be blocked
 * @ddb_entry: Pointer to device database entry
 *
 * This routine marks a device missing and close connection.
 **/
void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
{
	iscsi_block_session(cls_session);
}

/**
 * qla4xxx_mark_all_devices_missing - mark all devices as missing.
 * @ha: Pointer to host adapter structure.
 *
 * This routine marks a device missing and resets the relogin retry count.
 **/
void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
{
	iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
}

static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
				       struct ddb_entry *ddb_entry,
				       struct scsi_cmnd *cmd)
{
	struct srb *srb;

	srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
	if (!srb)
		return srb;

	kref_init(&srb->srb_ref);
	srb->ha = ha;
	srb->ddb = ddb_entry;
	srb->cmd = cmd;
	srb->flags = 0;
	CMD_SP(cmd) = (void *)srb;

	return srb;
}

static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
{
	struct scsi_cmnd *cmd = srb->cmd;

	if (srb->flags & SRB_DMA_VALID) {
		scsi_dma_unmap(cmd);
		srb->flags &= ~SRB_DMA_VALID;
	}
	CMD_SP(cmd) = NULL;
}

void qla4xxx_srb_compl(struct kref *ref)
{
	struct srb *srb = container_of(ref, struct srb, srb_ref);
	struct scsi_cmnd *cmd = srb->cmd;
	struct scsi_qla_host *ha = srb->ha;

	qla4xxx_srb_free_dma(ha, srb);

	mempool_free(srb, ha->srb_mempool);

	cmd->scsi_done(cmd);
}

/**
 * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
 * @host: scsi host
 * @cmd: Pointer to Linux's SCSI command structure
 *
 * Remarks:
 * This routine is invoked by Linux to send a SCSI command to the driver.
 * The mid-level driver tries to ensure that queuecommand never gets
 * invoked concurrently with itself or the interrupt handler (although
 * the interrupt handler may call this routine as part of request-
 * completion handling).   Unfortunely, it sometimes calls the scheduler
 * in interrupt context which is a big NO! NO!.
 **/
static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
{
	struct scsi_qla_host *ha = to_qla_host(host);
	struct ddb_entry *ddb_entry = cmd->device->hostdata;
	struct iscsi_cls_session *sess = ddb_entry->sess;
	struct srb *srb;
	int rval;

	if (test_bit(AF_EEH_BUSY, &ha->flags)) {
		if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
			cmd->result = DID_NO_CONNECT << 16;
		else
			cmd->result = DID_REQUEUE << 16;
		goto qc_fail_command;
	}

	if (!sess) {
		cmd->result = DID_IMM_RETRY << 16;
		goto qc_fail_command;
	}

	rval = iscsi_session_chkready(sess);
	if (rval) {
		cmd->result = rval;
		goto qc_fail_command;
	}

	if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
	    test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
	    test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
	    test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
	    test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
	    !test_bit(AF_ONLINE, &ha->flags) ||
	    !test_bit(AF_LINK_UP, &ha->flags) ||
	    test_bit(AF_LOOPBACK, &ha->flags) ||
	    test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) ||
	    test_bit(DPC_RESTORE_ACB, &ha->dpc_flags) ||
	    test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
		goto qc_host_busy;

	srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
	if (!srb)
		goto qc_host_busy;

	rval = qla4xxx_send_command_to_isp(ha, srb);
	if (rval != QLA_SUCCESS)
		goto qc_host_busy_free_sp;

	return 0;

qc_host_busy_free_sp:
	qla4xxx_srb_free_dma(ha, srb);
	mempool_free(srb, ha->srb_mempool);

qc_host_busy:
	return SCSI_MLQUEUE_HOST_BUSY;

qc_fail_command:
	cmd->scsi_done(cmd);

	return 0;
}

/**
 * qla4xxx_mem_free - frees memory allocated to adapter
 * @ha: Pointer to host adapter structure.
 *
 * Frees memory previously allocated by qla4xxx_mem_alloc
 **/
static void qla4xxx_mem_free(struct scsi_qla_host *ha)
{
	if (ha->queues)
		dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
				  ha->queues_dma);

	 if (ha->fw_dump)
		vfree(ha->fw_dump);

	ha->queues_len = 0;
	ha->queues = NULL;
	ha->queues_dma = 0;
	ha->request_ring = NULL;
	ha->request_dma = 0;
	ha->response_ring = NULL;
	ha->response_dma = 0;
	ha->shadow_regs = NULL;
	ha->shadow_regs_dma = 0;
	ha->fw_dump = NULL;
	ha->fw_dump_size = 0;

	/* Free srb pool. */
	mempool_destroy(ha->srb_mempool);
	ha->srb_mempool = NULL;

	dma_pool_destroy(ha->chap_dma_pool);

	if (ha->chap_list)
		vfree(ha->chap_list);
	ha->chap_list = NULL;

	dma_pool_destroy(ha->fw_ddb_dma_pool);

	/* release io space registers  */
	if (is_qla8022(ha)) {
		if (ha->nx_pcibase)
			iounmap(
			    (struct device_reg_82xx __iomem *)ha->nx_pcibase);
	} else if (is_qla8032(ha) || is_qla8042(ha)) {
		if (ha->nx_pcibase)
			iounmap(
			    (struct device_reg_83xx __iomem *)ha->nx_pcibase);
	} else if (ha->reg) {
		iounmap(ha->reg);
	}

	if (ha->reset_tmplt.buff)
		vfree(ha->reset_tmplt.buff);

	pci_release_regions(ha->pdev);
}

/**
 * qla4xxx_mem_alloc - allocates memory for use by adapter.
 * @ha: Pointer to host adapter structure
 *
 * Allocates DMA memory for request and response queues. Also allocates memory
 * for srbs.
 **/
static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
{
	unsigned long align;

	/* Allocate contiguous block of DMA memory for queues. */
	ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
			  (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
			  sizeof(struct shadow_regs) +
			  MEM_ALIGN_VALUE +
			  (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
	ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
					&ha->queues_dma, GFP_KERNEL);
	if (ha->queues == NULL) {
		ql4_printk(KERN_WARNING, ha,
		    "Memory Allocation failed - queues.\n");

		goto mem_alloc_error_exit;
	}

	/*
	 * As per RISC alignment requirements -- the bus-address must be a
	 * multiple of the request-ring size (in bytes).
	 */
	align = 0;
	if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
		align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
					   (MEM_ALIGN_VALUE - 1));

	/* Update request and response queue pointers. */
	ha->request_dma = ha->queues_dma + align;
	ha->request_ring = (struct queue_entry *) (ha->queues + align);
	ha->response_dma = ha->queues_dma + align +
		(REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
	ha->response_ring = (struct queue_entry *) (ha->queues + align +
						    (REQUEST_QUEUE_DEPTH *
						     QUEUE_SIZE));
	ha->shadow_regs_dma = ha->queues_dma + align +
		(REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
		(RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
	ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
						  (REQUEST_QUEUE_DEPTH *
						   QUEUE_SIZE) +
						  (RESPONSE_QUEUE_DEPTH *
						   QUEUE_SIZE));

	/* Allocate memory for srb pool. */
	ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
					 mempool_free_slab, srb_cachep);
	if (ha->srb_mempool == NULL) {
		ql4_printk(KERN_WARNING, ha,
		    "Memory Allocation failed - SRB Pool.\n");

		goto mem_alloc_error_exit;
	}

	ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
					    CHAP_DMA_BLOCK_SIZE, 8, 0);

	if (ha->chap_dma_pool == NULL) {
		ql4_printk(KERN_WARNING, ha,
		    "%s: chap_dma_pool allocation failed..\n", __func__);
		goto mem_alloc_error_exit;
	}

	ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
					      DDB_DMA_BLOCK_SIZE, 8, 0);

	if (ha->fw_ddb_dma_pool == NULL) {
		ql4_printk(KERN_WARNING, ha,
			   "%s: fw_ddb_dma_pool allocation failed..\n",
			   __func__);
		goto mem_alloc_error_exit;
	}

	return QLA_SUCCESS;

mem_alloc_error_exit:
	qla4xxx_mem_free(ha);
	return QLA_ERROR;
}

/**
 * qla4_8xxx_check_temp - Check the ISP82XX temperature.
 * @ha: adapter block pointer.
 *
 * Note: The caller should not hold the idc lock.
 **/
static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
{
	uint32_t temp, temp_state, temp_val;
	int status = QLA_SUCCESS;

	temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);

	temp_state = qla82xx_get_temp_state(temp);
	temp_val = qla82xx_get_temp_val(temp);

	if (temp_state == QLA82XX_TEMP_PANIC) {
		ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
			   " exceeds maximum allowed. Hardware has been shut"
			   " down.\n", temp_val);
		status = QLA_ERROR;
	} else if (temp_state == QLA82XX_TEMP_WARN) {
		if (ha->temperature == QLA82XX_TEMP_NORMAL)
			ql4_printk(KERN_WARNING, ha, "Device temperature %d"
				   " degrees C exceeds operating range."
				   " Immediate action needed.\n", temp_val);
	} else {
		if (ha->temperature == QLA82XX_TEMP_WARN)
			ql4_printk(KERN_INFO, ha, "Device temperature is"
				   " now %d degrees C in normal range.\n",
				   temp_val);
	}
	ha->temperature = temp_state;
	return status;
}

/**
 * qla4_8xxx_check_fw_alive  - Check firmware health
 * @ha: Pointer to host adapter structure.
 *
 * Context: Interrupt
 **/
static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
{
	uint32_t fw_heartbeat_counter;
	int status = QLA_SUCCESS;

	fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
						   QLA8XXX_PEG_ALIVE_COUNTER);
	/* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
	if (fw_heartbeat_counter == 0xffffffff) {
		DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
		    "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
		    ha->host_no, __func__));
		return status;
	}

	if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
		ha->seconds_since_last_heartbeat++;
		/* FW not alive after 2 seconds */
		if (ha->seconds_since_last_heartbeat == 2) {
			ha->seconds_since_last_heartbeat = 0;
			qla4_8xxx_dump_peg_reg(ha);
			status = QLA_ERROR;
		}
	} else
		ha->seconds_since_last_heartbeat = 0;

	ha->fw_heartbeat_counter = fw_heartbeat_counter;
	return status;
}

static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
{
	uint32_t halt_status;
	int halt_status_unrecoverable = 0;

	halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);

	if (is_qla8022(ha)) {
		ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
			   __func__);
		qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
				CRB_NIU_XG_PAUSE_CTL_P0 |
				CRB_NIU_XG_PAUSE_CTL_P1);

		if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
			ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
				   __func__);
		if (halt_status & HALT_STATUS_UNRECOVERABLE)
			halt_status_unrecoverable = 1;
	} else if (is_qla8032(ha) || is_qla8042(ha)) {
		if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
			ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
				   __func__);
		else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
			halt_status_unrecoverable = 1;
	}

	/*
	 * Since we cannot change dev_state in interrupt context,
	 * set appropriate DPC flag then wakeup DPC
	 */
	if (halt_status_unrecoverable) {
		set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
	} else {
		ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
			   __func__);
		set_bit(DPC_RESET_HA, &ha->dpc_flags);
	}
	qla4xxx_mailbox_premature_completion(ha);
	qla4xxx_wake_dpc(ha);
}

/**
 * qla4_8xxx_watchdog - Poll dev state
 * @ha: Pointer to host adapter structure.
 *
 * Context: Interrupt
 **/
void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
{
	uint32_t dev_state;
	uint32_t idc_ctrl;

	if (is_qla8032(ha) &&
	    (qla4_83xx_is_detached(ha) == QLA_SUCCESS))
		WARN_ONCE(1, "%s: iSCSI function %d marked invisible\n",
			  __func__, ha->func_num);

	/* don't poll if reset is going on */
	if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
	    test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
	    test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
		dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);

		if (qla4_8xxx_check_temp(ha)) {
			if (is_qla8022(ha)) {
				ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
				qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
						CRB_NIU_XG_PAUSE_CTL_P0 |
						CRB_NIU_XG_PAUSE_CTL_P1);
			}
			set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
			qla4xxx_wake_dpc(ha);
		} else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
			   !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {

			ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
				   __func__);

			if (is_qla8032(ha) || is_qla8042(ha)) {
				idc_ctrl = qla4_83xx_rd_reg(ha,
							QLA83XX_IDC_DRV_CTRL);
				if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
					ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
						   __func__);
					qla4xxx_mailbox_premature_completion(
									    ha);
				}
			}

			if ((is_qla8032(ha) || is_qla8042(ha)) ||
			    (is_qla8022(ha) && !ql4xdontresethba)) {
				set_bit(DPC_RESET_HA, &ha->dpc_flags);
				qla4xxx_wake_dpc(ha);
			}
		} else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
		    !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
			ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
			    __func__);
			set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
			qla4xxx_wake_dpc(ha);
		} else  {
			/* Check firmware health */
			if (qla4_8xxx_check_fw_alive(ha))
				qla4_8xxx_process_fw_error(ha);
		}
	}
}

static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
{
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;

	if (!(ddb_entry->ddb_type == FLASH_DDB))
		return;

	if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
	    !iscsi_is_session_online(cls_sess)) {
		if (atomic_read(&ddb_entry->retry_relogin_timer) !=
		    INVALID_ENTRY) {
			if (atomic_read(&ddb_entry->retry_relogin_timer) ==
					0) {
				atomic_set(&ddb_entry->retry_relogin_timer,
					   INVALID_ENTRY);
				set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
				set_bit(DF_RELOGIN, &ddb_entry->flags);
				DEBUG2(ql4_printk(KERN_INFO, ha,
				       "%s: index [%d] login device\n",
					__func__, ddb_entry->fw_ddb_index));
			} else
				atomic_dec(&ddb_entry->retry_relogin_timer);
		}
	}

	/* Wait for relogin to timeout */
	if (atomic_read(&ddb_entry->relogin_timer) &&
	    (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
		/*
		 * If the relogin times out and the device is
		 * still NOT ONLINE then try and relogin again.
		 */
		if (!iscsi_is_session_online(cls_sess)) {
			/* Reset retry relogin timer */
			atomic_inc(&ddb_entry->relogin_retry_count);
			DEBUG2(ql4_printk(KERN_INFO, ha,
				"%s: index[%d] relogin timed out-retrying"
				" relogin (%d), retry (%d)\n", __func__,
				ddb_entry->fw_ddb_index,
				atomic_read(&ddb_entry->relogin_retry_count),
				ddb_entry->default_time2wait + 4));
			set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
			atomic_set(&ddb_entry->retry_relogin_timer,
				   ddb_entry->default_time2wait + 4);
		}
	}
}

/**
 * qla4xxx_timer - checks every second for work to do.
 * @ha: Pointer to host adapter structure.
 **/
static void qla4xxx_timer(struct timer_list *t)
{
	struct scsi_qla_host *ha = from_timer(ha, t, timer);
	int start_dpc = 0;
	uint16_t w;

	iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);

	/* If we are in the middle of AER/EEH processing
	 * skip any processing and reschedule the timer
	 */
	if (test_bit(AF_EEH_BUSY, &ha->flags)) {
		mod_timer(&ha->timer, jiffies + HZ);
		return;
	}

	/* Hardware read to trigger an EEH error during mailbox waits. */
	if (!pci_channel_offline(ha->pdev))
		pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);

	if (is_qla80XX(ha))
		qla4_8xxx_watchdog(ha);

	if (is_qla40XX(ha)) {
		/* Check for heartbeat interval. */
		if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
		    ha->heartbeat_interval != 0) {
			ha->seconds_since_last_heartbeat++;
			if (ha->seconds_since_last_heartbeat >
			    ha->heartbeat_interval + 2)
				set_bit(DPC_RESET_HA, &ha->dpc_flags);
		}
	}

	/* Process any deferred work. */
	if (!list_empty(&ha->work_list))
		start_dpc++;

	/* Wakeup the dpc routine for this adapter, if needed. */
	if (start_dpc ||
	     test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
	     test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
	     test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
	     test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
	     test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
	     test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
	     test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
	     test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
	     test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
	     test_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags) ||
	     test_bit(DPC_AEN, &ha->dpc_flags)) {
		DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
			      " - dpc flags = 0x%lx\n",
			      ha->host_no, __func__, ha->dpc_flags));
		qla4xxx_wake_dpc(ha);
	}

	/* Reschedule timer thread to call us back in one second */
	mod_timer(&ha->timer, jiffies + HZ);

	DEBUG2(ha->seconds_since_last_intr++);
}

/**
 * qla4xxx_cmd_wait - waits for all outstanding commands to complete
 * @ha: Pointer to host adapter structure.
 *
 * This routine stalls the driver until all outstanding commands are returned.
 * Caller must release the Hardware Lock prior to calling this routine.
 **/
static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
{
	uint32_t index = 0;
	unsigned long flags;
	struct scsi_cmnd *cmd;
	unsigned long wtime;
	uint32_t wtmo;

	if (is_qla40XX(ha))
		wtmo = WAIT_CMD_TOV;
	else
		wtmo = ha->nx_reset_timeout / 2;

	wtime = jiffies + (wtmo * HZ);

	DEBUG2(ql4_printk(KERN_INFO, ha,
			  "Wait up to %u seconds for cmds to complete\n",
			  wtmo));

	while (!time_after_eq(jiffies, wtime)) {
		spin_lock_irqsave(&ha->hardware_lock, flags);
		/* Find a command that hasn't completed. */
		for (index = 0; index < ha->host->can_queue; index++) {
			cmd = scsi_host_find_tag(ha->host, index);
			/*
			 * We cannot just check if the index is valid,
			 * becase if we are run from the scsi eh, then
			 * the scsi/block layer is going to prevent
			 * the tag from being released.
			 */
			if (cmd != NULL && CMD_SP(cmd))
				break;
		}
		spin_unlock_irqrestore(&ha->hardware_lock, flags);

		/* If No Commands are pending, wait is complete */
		if (index == ha->host->can_queue)
			return QLA_SUCCESS;

		msleep(1000);
	}
	/* If we timed out on waiting for commands to come back
	 * return ERROR. */
	return QLA_ERROR;
}

int qla4xxx_hw_reset(struct scsi_qla_host *ha)
{
	uint32_t ctrl_status;
	unsigned long flags = 0;

	DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));

	if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
		return QLA_ERROR;

	spin_lock_irqsave(&ha->hardware_lock, flags);

	/*
	 * If the SCSI Reset Interrupt bit is set, clear it.
	 * Otherwise, the Soft Reset won't work.
	 */
	ctrl_status = readw(&ha->reg->ctrl_status);
	if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
		writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);

	/* Issue Soft Reset */
	writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
	readl(&ha->reg->ctrl_status);

	spin_unlock_irqrestore(&ha->hardware_lock, flags);
	return QLA_SUCCESS;
}

/**
 * qla4xxx_soft_reset - performs soft reset.
 * @ha: Pointer to host adapter structure.
 **/
int qla4xxx_soft_reset(struct scsi_qla_host *ha)
{
	uint32_t max_wait_time;
	unsigned long flags = 0;
	int status;
	uint32_t ctrl_status;

	status = qla4xxx_hw_reset(ha);
	if (status != QLA_SUCCESS)
		return status;

	status = QLA_ERROR;
	/* Wait until the Network Reset Intr bit is cleared */
	max_wait_time = RESET_INTR_TOV;
	do {
		spin_lock_irqsave(&ha->hardware_lock, flags);
		ctrl_status = readw(&ha->reg->ctrl_status);
		spin_unlock_irqrestore(&ha->hardware_lock, flags);

		if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
			break;

		msleep(1000);
	} while ((--max_wait_time));

	if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
		DEBUG2(printk(KERN_WARNING
			      "scsi%ld: Network Reset Intr not cleared by "
			      "Network function, clearing it now!\n",
			      ha->host_no));
		spin_lock_irqsave(&ha->hardware_lock, flags);
		writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
		readl(&ha->reg->ctrl_status);
		spin_unlock_irqrestore(&ha->hardware_lock, flags);
	}

	/* Wait until the firmware tells us the Soft Reset is done */
	max_wait_time = SOFT_RESET_TOV;
	do {
		spin_lock_irqsave(&ha->hardware_lock, flags);
		ctrl_status = readw(&ha->reg->ctrl_status);
		spin_unlock_irqrestore(&ha->hardware_lock, flags);

		if ((ctrl_status & CSR_SOFT_RESET) == 0) {
			status = QLA_SUCCESS;
			break;
		}

		msleep(1000);
	} while ((--max_wait_time));

	/*
	 * Also, make sure that the SCSI Reset Interrupt bit has been cleared
	 * after the soft reset has taken place.
	 */
	spin_lock_irqsave(&ha->hardware_lock, flags);
	ctrl_status = readw(&ha->reg->ctrl_status);
	if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
		writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
		readl(&ha->reg->ctrl_status);
	}
	spin_unlock_irqrestore(&ha->hardware_lock, flags);

	/* If soft reset fails then most probably the bios on other
	 * function is also enabled.
	 * Since the initialization is sequential the other fn
	 * wont be able to acknowledge the soft reset.
	 * Issue a force soft reset to workaround this scenario.
	 */
	if (max_wait_time == 0) {
		/* Issue Force Soft Reset */
		spin_lock_irqsave(&ha->hardware_lock, flags);
		writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
		readl(&ha->reg->ctrl_status);
		spin_unlock_irqrestore(&ha->hardware_lock, flags);
		/* Wait until the firmware tells us the Soft Reset is done */
		max_wait_time = SOFT_RESET_TOV;
		do {
			spin_lock_irqsave(&ha->hardware_lock, flags);
			ctrl_status = readw(&ha->reg->ctrl_status);
			spin_unlock_irqrestore(&ha->hardware_lock, flags);

			if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
				status = QLA_SUCCESS;
				break;
			}

			msleep(1000);
		} while ((--max_wait_time));
	}

	return status;
}

/**
 * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
 * @ha: Pointer to host adapter structure.
 * @res: returned scsi status
 *
 * This routine is called just prior to a HARD RESET to return all
 * outstanding commands back to the Operating System.
 * Caller should make sure that the following locks are released
 * before this calling routine: Hardware lock, and io_request_lock.
 **/
static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
{
	struct srb *srb;
	int i;
	unsigned long flags;

	spin_lock_irqsave(&ha->hardware_lock, flags);
	for (i = 0; i < ha->host->can_queue; i++) {
		srb = qla4xxx_del_from_active_array(ha, i);
		if (srb != NULL) {
			srb->cmd->result = res;
			kref_put(&srb->srb_ref, qla4xxx_srb_compl);
		}
	}
	spin_unlock_irqrestore(&ha->hardware_lock, flags);
}

void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
{
	clear_bit(AF_ONLINE, &ha->flags);

	/* Disable the board */
	ql4_printk(KERN_INFO, ha, "Disabling the board\n");

	qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
	qla4xxx_mark_all_devices_missing(ha);
	clear_bit(AF_INIT_DONE, &ha->flags);
}

static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
{
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;

	sess = cls_session->dd_data;
	ddb_entry = sess->dd_data;
	ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;

	if (ddb_entry->ddb_type == FLASH_DDB)
		iscsi_block_session(ddb_entry->sess);
	else
		iscsi_session_failure(cls_session->dd_data,
				      ISCSI_ERR_CONN_FAILED);
}

/**
 * qla4xxx_recover_adapter - recovers adapter after a fatal error
 * @ha: Pointer to host adapter structure.
 **/
static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
{
	int status = QLA_ERROR;
	uint8_t reset_chip = 0;
	uint32_t dev_state;
	unsigned long wait;

	/* Stall incoming I/O until we are done */
	scsi_block_requests(ha->host);
	clear_bit(AF_ONLINE, &ha->flags);
	clear_bit(AF_LINK_UP, &ha->flags);

	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));

	set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);

	if ((is_qla8032(ha) || is_qla8042(ha)) &&
	    !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
		ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
			   __func__);
		/* disable pause frame for ISP83xx */
		qla4_83xx_disable_pause(ha);
	}

	iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);

	if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
		reset_chip = 1;

	/* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
	 * do not reset adapter, jump to initialize_adapter */
	if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
		status = QLA_SUCCESS;
		goto recover_ha_init_adapter;
	}

	/* For the ISP-8xxx adapter, issue a stop_firmware if invoked
	 * from eh_host_reset or ioctl module */
	if (is_qla80XX(ha) && !reset_chip &&
	    test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {

		DEBUG2(ql4_printk(KERN_INFO, ha,
		    "scsi%ld: %s - Performing stop_firmware...\n",
		    ha->host_no, __func__));
		status = ha->isp_ops->reset_firmware(ha);
		if (status == QLA_SUCCESS) {
			ha->isp_ops->disable_intrs(ha);
			qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
			qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
		} else {
			/* If the stop_firmware fails then
			 * reset the entire chip */
			reset_chip = 1;
			clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
			set_bit(DPC_RESET_HA, &ha->dpc_flags);
		}
	}

	/* Issue full chip reset if recovering from a catastrophic error,
	 * or if stop_firmware fails for ISP-8xxx.
	 * This is the default case for ISP-4xxx */
	if (is_qla40XX(ha) || reset_chip) {
		if (is_qla40XX(ha))
			goto chip_reset;

		/* Check if 8XXX firmware is alive or not
		 * We may have arrived here from NEED_RESET
		 * detection only */
		if (test_bit(AF_FW_RECOVERY, &ha->flags))
			goto chip_reset;

		wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
		while (time_before(jiffies, wait)) {
			if (qla4_8xxx_check_fw_alive(ha)) {
				qla4xxx_mailbox_premature_completion(ha);
				break;
			}

			set_current_state(TASK_UNINTERRUPTIBLE);
			schedule_timeout(HZ);
		}
chip_reset:
		if (!test_bit(AF_FW_RECOVERY, &ha->flags))
			qla4xxx_cmd_wait(ha);

		qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
		DEBUG2(ql4_printk(KERN_INFO, ha,
		    "scsi%ld: %s - Performing chip reset..\n",
		    ha->host_no, __func__));
		status = ha->isp_ops->reset_chip(ha);
		qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
	}

	/* Flush any pending ddb changed AENs */
	qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);

recover_ha_init_adapter:
	/* Upon successful firmware/chip reset, re-initialize the adapter */
	if (status == QLA_SUCCESS) {
		/* For ISP-4xxx, force function 1 to always initialize
		 * before function 3 to prevent both funcions from
		 * stepping on top of the other */
		if (is_qla40XX(ha) && (ha->mac_index == 3))
			ssleep(6);

		/* NOTE: AF_ONLINE flag set upon successful completion of
		 * qla4xxx_initialize_adapter */
		status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
		if (is_qla80XX(ha) && (status == QLA_ERROR)) {
			status = qla4_8xxx_check_init_adapter_retry(ha);
			if (status == QLA_ERROR) {
				ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Don't retry recover adapter\n",
					   ha->host_no, __func__);
				qla4xxx_dead_adapter_cleanup(ha);
				clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
				clear_bit(DPC_RESET_HA, &ha->dpc_flags);
				clear_bit(DPC_RESET_HA_FW_CONTEXT,
					  &ha->dpc_flags);
				goto exit_recover;
			}
		}
	}

	/* Retry failed adapter initialization, if necessary
	 * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
	 * case to prevent ping-pong resets between functions */
	if (!test_bit(AF_ONLINE, &ha->flags) &&
	    !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
		/* Adapter initialization failed, see if we can retry
		 * resetting the ha.
		 * Since we don't want to block the DPC for too long
		 * with multiple resets in the same thread,
		 * utilize DPC to retry */
		if (is_qla80XX(ha)) {
			ha->isp_ops->idc_lock(ha);
			dev_state = qla4_8xxx_rd_direct(ha,
							QLA8XXX_CRB_DEV_STATE);
			ha->isp_ops->idc_unlock(ha);
			if (dev_state == QLA8XXX_DEV_FAILED) {
				ql4_printk(KERN_INFO, ha, "%s: don't retry "
					   "recover adapter. H/W is in Failed "
					   "state\n", __func__);
				qla4xxx_dead_adapter_cleanup(ha);
				clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
				clear_bit(DPC_RESET_HA, &ha->dpc_flags);
				clear_bit(DPC_RESET_HA_FW_CONTEXT,
						&ha->dpc_flags);
				status = QLA_ERROR;

				goto exit_recover;
			}
		}

		if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
			ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
			DEBUG2(printk("scsi%ld: recover adapter - retrying "
				      "(%d) more times\n", ha->host_no,
				      ha->retry_reset_ha_cnt));
			set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
			status = QLA_ERROR;
		} else {
			if (ha->retry_reset_ha_cnt > 0) {
				/* Schedule another Reset HA--DPC will retry */
				ha->retry_reset_ha_cnt--;
				DEBUG2(printk("scsi%ld: recover adapter - "
					      "retry remaining %d\n",
					      ha->host_no,
					      ha->retry_reset_ha_cnt));
				status = QLA_ERROR;
			}

			if (ha->retry_reset_ha_cnt == 0) {
				/* Recover adapter retries have been exhausted.
				 * Adapter DEAD */
				DEBUG2(printk("scsi%ld: recover adapter "
					      "failed - board disabled\n",
					      ha->host_no));
				qla4xxx_dead_adapter_cleanup(ha);
				clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
				clear_bit(DPC_RESET_HA, &ha->dpc_flags);
				clear_bit(DPC_RESET_HA_FW_CONTEXT,
					  &ha->dpc_flags);
				status = QLA_ERROR;
			}
		}
	} else {
		clear_bit(DPC_RESET_HA, &ha->dpc_flags);
		clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
		clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
	}

exit_recover:
	ha->adapter_error_count++;

	if (test_bit(AF_ONLINE, &ha->flags))
		ha->isp_ops->enable_intrs(ha);

	scsi_unblock_requests(ha->host);

	clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
	DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
	    status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));

	return status;
}

static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
{
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;

	sess = cls_session->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
	if (!iscsi_is_session_online(cls_session)) {
		if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
				   " unblock session\n", ha->host_no, __func__,
				   ddb_entry->fw_ddb_index);
			iscsi_unblock_session(ddb_entry->sess);
		} else {
			/* Trigger relogin */
			if (ddb_entry->ddb_type == FLASH_DDB) {
				if (!(test_bit(DF_RELOGIN, &ddb_entry->flags) ||
				      test_bit(DF_DISABLE_RELOGIN,
					       &ddb_entry->flags)))
					qla4xxx_arm_relogin_timer(ddb_entry);
			} else
				iscsi_session_failure(cls_session->dd_data,
						      ISCSI_ERR_CONN_FAILED);
		}
	}
}

int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
{
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;

	sess = cls_session->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
	ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
		   " unblock session\n", ha->host_no, __func__,
		   ddb_entry->fw_ddb_index);

	iscsi_unblock_session(ddb_entry->sess);

	/* Start scan target */
	if (test_bit(AF_ONLINE, &ha->flags)) {
		ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
			   " start scan\n", ha->host_no, __func__,
			   ddb_entry->fw_ddb_index);
		scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
	}
	return QLA_SUCCESS;
}

int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
{
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;
	int status = QLA_SUCCESS;

	sess = cls_session->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
	ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
		   " unblock user space session\n", ha->host_no, __func__,
		   ddb_entry->fw_ddb_index);

	if (!iscsi_is_session_online(cls_session)) {
		iscsi_conn_start(ddb_entry->conn);
		iscsi_conn_login_event(ddb_entry->conn,
				       ISCSI_CONN_STATE_LOGGED_IN);
	} else {
		ql4_printk(KERN_INFO, ha,
			   "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
			   ha->host_no, __func__, ddb_entry->fw_ddb_index,
			   cls_session->sid);
		status = QLA_ERROR;
	}

	return status;
}

static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
{
	iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
}

static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
{
	uint16_t relogin_timer;
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;

	relogin_timer = max(ddb_entry->default_relogin_timeout,
			    (uint16_t)RELOGIN_TOV);
	atomic_set(&ddb_entry->relogin_timer, relogin_timer);

	DEBUG2(ql4_printk(KERN_INFO, ha,
			  "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
			  ddb_entry->fw_ddb_index, relogin_timer));

	qla4xxx_login_flash_ddb(cls_sess);
}

static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
{
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;

	if (!(ddb_entry->ddb_type == FLASH_DDB))
		return;

	if (test_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
		return;

	if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
	    !iscsi_is_session_online(cls_sess)) {
		DEBUG2(ql4_printk(KERN_INFO, ha,
				  "relogin issued\n"));
		qla4xxx_relogin_flash_ddb(cls_sess);
	}
}

void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
{
	if (ha->dpc_thread)
		queue_work(ha->dpc_thread, &ha->dpc_work);
}

static struct qla4_work_evt *
qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
		   enum qla4_work_type type)
{
	struct qla4_work_evt *e;
	uint32_t size = sizeof(struct qla4_work_evt) + data_size;

	e = kzalloc(size, GFP_ATOMIC);
	if (!e)
		return NULL;

	INIT_LIST_HEAD(&e->list);
	e->type = type;
	return e;
}

static void qla4xxx_post_work(struct scsi_qla_host *ha,
			     struct qla4_work_evt *e)
{
	unsigned long flags;

	spin_lock_irqsave(&ha->work_lock, flags);
	list_add_tail(&e->list, &ha->work_list);
	spin_unlock_irqrestore(&ha->work_lock, flags);
	qla4xxx_wake_dpc(ha);
}

int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
			  enum iscsi_host_event_code aen_code,
			  uint32_t data_size, uint8_t *data)
{
	struct qla4_work_evt *e;

	e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
	if (!e)
		return QLA_ERROR;

	e->u.aen.code = aen_code;
	e->u.aen.data_size = data_size;
	memcpy(e->u.aen.data, data, data_size);

	qla4xxx_post_work(ha, e);

	return QLA_SUCCESS;
}

int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
			       uint32_t status, uint32_t pid,
			       uint32_t data_size, uint8_t *data)
{
	struct qla4_work_evt *e;

	e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
	if (!e)
		return QLA_ERROR;

	e->u.ping.status = status;
	e->u.ping.pid = pid;
	e->u.ping.data_size = data_size;
	memcpy(e->u.ping.data, data, data_size);

	qla4xxx_post_work(ha, e);

	return QLA_SUCCESS;
}

static void qla4xxx_do_work(struct scsi_qla_host *ha)
{
	struct qla4_work_evt *e, *tmp;
	unsigned long flags;
	LIST_HEAD(work);

	spin_lock_irqsave(&ha->work_lock, flags);
	list_splice_init(&ha->work_list, &work);
	spin_unlock_irqrestore(&ha->work_lock, flags);

	list_for_each_entry_safe(e, tmp, &work, list) {
		list_del_init(&e->list);

		switch (e->type) {
		case QLA4_EVENT_AEN:
			iscsi_post_host_event(ha->host_no,
					      &qla4xxx_iscsi_transport,
					      e->u.aen.code,
					      e->u.aen.data_size,
					      e->u.aen.data);
			break;
		case QLA4_EVENT_PING_STATUS:
			iscsi_ping_comp_event(ha->host_no,
					      &qla4xxx_iscsi_transport,
					      e->u.ping.status,
					      e->u.ping.pid,
					      e->u.ping.data_size,
					      e->u.ping.data);
			break;
		default:
			ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
				   "supported", e->type);
		}
		kfree(e);
	}
}

/**
 * qla4xxx_do_dpc - dpc routine
 * @data: in our case pointer to adapter structure
 *
 * This routine is a task that is schedule by the interrupt handler
 * to perform the background processing for interrupts.  We put it
 * on a task queue that is consumed whenever the scheduler runs; that's
 * so you can do anything (i.e. put the process to sleep etc).  In fact,
 * the mid-level tries to sleep when it reaches the driver threshold
 * "host->can_queue". This can cause a panic if we were in our interrupt code.
 **/
static void qla4xxx_do_dpc(struct work_struct *work)
{
	struct scsi_qla_host *ha =
		container_of(work, struct scsi_qla_host, dpc_work);
	int status = QLA_ERROR;

	DEBUG2(ql4_printk(KERN_INFO, ha,
			  "scsi%ld: %s: DPC handler waking up. flags = 0x%08lx, dpc_flags = 0x%08lx\n",
			  ha->host_no, __func__, ha->flags, ha->dpc_flags));

	/* Initialization not yet finished. Don't do anything yet. */
	if (!test_bit(AF_INIT_DONE, &ha->flags))
		return;

	if (test_bit(AF_EEH_BUSY, &ha->flags)) {
		DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
		    ha->host_no, __func__, ha->flags));
		return;
	}

	/* post events to application */
	qla4xxx_do_work(ha);

	if (is_qla80XX(ha)) {
		if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
			if (is_qla8032(ha) || is_qla8042(ha)) {
				ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
					   __func__);
				/* disable pause frame for ISP83xx */
				qla4_83xx_disable_pause(ha);
			}

			ha->isp_ops->idc_lock(ha);
			qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
					    QLA8XXX_DEV_FAILED);
			ha->isp_ops->idc_unlock(ha);
			ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
			qla4_8xxx_device_state_handler(ha);
		}

		if (test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags)) {
			if (is_qla8042(ha)) {
				if (ha->idc_info.info2 &
				    ENABLE_INTERNAL_LOOPBACK) {
					ql4_printk(KERN_INFO, ha, "%s: Disabling ACB\n",
						   __func__);
					status = qla4_84xx_config_acb(ha,
							    ACB_CONFIG_DISABLE);
					if (status != QLA_SUCCESS) {
						ql4_printk(KERN_INFO, ha, "%s: ACB config failed\n",
							   __func__);
					}
				}
			}
			qla4_83xx_post_idc_ack(ha);
			clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags);
		}

		if (is_qla8042(ha) &&
		    test_bit(DPC_RESTORE_ACB, &ha->dpc_flags)) {
			ql4_printk(KERN_INFO, ha, "%s: Restoring ACB\n",
				   __func__);
			if (qla4_84xx_config_acb(ha, ACB_CONFIG_SET) !=
			    QLA_SUCCESS) {
				ql4_printk(KERN_INFO, ha, "%s: ACB config failed ",
					   __func__);
			}
			clear_bit(DPC_RESTORE_ACB, &ha->dpc_flags);
		}

		if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
			qla4_8xxx_need_qsnt_handler(ha);
		}
	}

	if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
	    (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
	    test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
	    test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
		if ((is_qla8022(ha) && ql4xdontresethba) ||
		    ((is_qla8032(ha) || is_qla8042(ha)) &&
		     qla4_83xx_idc_dontreset(ha))) {
			DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
			    ha->host_no, __func__));
			clear_bit(DPC_RESET_HA, &ha->dpc_flags);
			clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
			clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
			goto dpc_post_reset_ha;
		}
		if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
		    test_bit(DPC_RESET_HA, &ha->dpc_flags))
			qla4xxx_recover_adapter(ha);

		if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
			uint8_t wait_time = RESET_INTR_TOV;

			while ((readw(&ha->reg->ctrl_status) &
				(CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
				if (--wait_time == 0)
					break;
				msleep(1000);
			}
			if (wait_time == 0)
				DEBUG2(printk("scsi%ld: %s: SR|FSR "
					      "bit not cleared-- resetting\n",
					      ha->host_no, __func__));
			qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
			if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
				qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
				status = qla4xxx_recover_adapter(ha);
			}
			clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
			if (status == QLA_SUCCESS)
				ha->isp_ops->enable_intrs(ha);
		}
	}

dpc_post_reset_ha:
	/* ---- process AEN? --- */
	if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
		qla4xxx_process_aen(ha, PROCESS_ALL_AENS);

	/* ---- Get DHCP IP Address? --- */
	if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
		qla4xxx_get_dhcp_ip_address(ha);

	/* ---- relogin device? --- */
	if (adapter_up(ha) &&
	    test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
		iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
	}

	/* ---- link change? --- */
	if (!test_bit(AF_LOOPBACK, &ha->flags) &&
	    test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
		if (!test_bit(AF_LINK_UP, &ha->flags)) {
			/* ---- link down? --- */
			qla4xxx_mark_all_devices_missing(ha);
		} else {
			/* ---- link up? --- *
			 * F/W will auto login to all devices ONLY ONCE after
			 * link up during driver initialization and runtime
			 * fatal error recovery.  Therefore, the driver must
			 * manually relogin to devices when recovering from
			 * connection failures, logouts, expired KATO, etc. */
			if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
				qla4xxx_build_ddb_list(ha, ha->is_reset);
				iscsi_host_for_each_session(ha->host,
						qla4xxx_login_flash_ddb);
			} else
				qla4xxx_relogin_all_devices(ha);
		}
	}
	if (test_and_clear_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags)) {
		if (qla4xxx_sysfs_ddb_export(ha))
			ql4_printk(KERN_ERR, ha, "%s: Error exporting ddb to sysfs\n",
				   __func__);
	}
}

/**
 * qla4xxx_free_adapter - release the adapter
 * @ha: pointer to adapter structure
 **/
static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
{
	qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);

	/* Turn-off interrupts on the card. */
	ha->isp_ops->disable_intrs(ha);

	if (is_qla40XX(ha)) {
		writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
		       &ha->reg->ctrl_status);
		readl(&ha->reg->ctrl_status);
	} else if (is_qla8022(ha)) {
		writel(0, &ha->qla4_82xx_reg->host_int);
		readl(&ha->qla4_82xx_reg->host_int);
	} else if (is_qla8032(ha) || is_qla8042(ha)) {
		writel(0, &ha->qla4_83xx_reg->risc_intr);
		readl(&ha->qla4_83xx_reg->risc_intr);
	}

	/* Remove timer thread, if present */
	if (ha->timer_active)
		qla4xxx_stop_timer(ha);

	/* Kill the kernel thread for this host */
	if (ha->dpc_thread)
		destroy_workqueue(ha->dpc_thread);

	/* Kill the kernel thread for this host */
	if (ha->task_wq)
		destroy_workqueue(ha->task_wq);

	/* Put firmware in known state */
	ha->isp_ops->reset_firmware(ha);

	if (is_qla80XX(ha)) {
		ha->isp_ops->idc_lock(ha);
		qla4_8xxx_clear_drv_active(ha);
		ha->isp_ops->idc_unlock(ha);
	}

	/* Detach interrupts */
	qla4xxx_free_irqs(ha);

	/* free extra memory */
	qla4xxx_mem_free(ha);
}

int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
{
	int status = 0;
	unsigned long mem_base, mem_len, db_base, db_len;
	struct pci_dev *pdev = ha->pdev;

	status = pci_request_regions(pdev, DRIVER_NAME);
	if (status) {
		printk(KERN_WARNING
		    "scsi(%ld) Failed to reserve PIO regions (%s) "
		    "status=%d\n", ha->host_no, pci_name(pdev), status);
		goto iospace_error_exit;
	}

	DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
	    __func__, pdev->revision));
	ha->revision_id = pdev->revision;

	/* remap phys address */
	mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
	mem_len = pci_resource_len(pdev, 0);
	DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
	    __func__, mem_base, mem_len));

	/* mapping of pcibase pointer */
	ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
	if (!ha->nx_pcibase) {
		printk(KERN_ERR
		    "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
		pci_release_regions(ha->pdev);
		goto iospace_error_exit;
	}

	/* Mapping of IO base pointer, door bell read and write pointer */

	/* mapping of IO base pointer */
	if (is_qla8022(ha)) {
		ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
				    ((uint8_t *)ha->nx_pcibase + 0xbc000 +
				     (ha->pdev->devfn << 11));
		ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
				    QLA82XX_CAM_RAM_DB2);
	} else if (is_qla8032(ha) || is_qla8042(ha)) {
		ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
				    ((uint8_t *)ha->nx_pcibase);
	}

	db_base = pci_resource_start(pdev, 4);  /* doorbell is on bar 4 */
	db_len = pci_resource_len(pdev, 4);

	return 0;
iospace_error_exit:
	return -ENOMEM;
}

/***
 * qla4xxx_iospace_config - maps registers
 * @ha: pointer to adapter structure
 *
 * This routines maps HBA's registers from the pci address space
 * into the kernel virtual address space for memory mapped i/o.
 **/
int qla4xxx_iospace_config(struct scsi_qla_host *ha)
{
	unsigned long pio, pio_len, pio_flags;
	unsigned long mmio, mmio_len, mmio_flags;

	pio = pci_resource_start(ha->pdev, 0);
	pio_len = pci_resource_len(ha->pdev, 0);
	pio_flags = pci_resource_flags(ha->pdev, 0);
	if (pio_flags & IORESOURCE_IO) {
		if (pio_len < MIN_IOBASE_LEN) {
			ql4_printk(KERN_WARNING, ha,
				"Invalid PCI I/O region size\n");
			pio = 0;
		}
	} else {
		ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
		pio = 0;
	}

	/* Use MMIO operations for all accesses. */
	mmio = pci_resource_start(ha->pdev, 1);
	mmio_len = pci_resource_len(ha->pdev, 1);
	mmio_flags = pci_resource_flags(ha->pdev, 1);

	if (!(mmio_flags & IORESOURCE_MEM)) {
		ql4_printk(KERN_ERR, ha,
		    "region #0 not an MMIO resource, aborting\n");

		goto iospace_error_exit;
	}

	if (mmio_len < MIN_IOBASE_LEN) {
		ql4_printk(KERN_ERR, ha,
		    "Invalid PCI mem region size, aborting\n");
		goto iospace_error_exit;
	}

	if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
		ql4_printk(KERN_WARNING, ha,
		    "Failed to reserve PIO/MMIO regions\n");

		goto iospace_error_exit;
	}

	ha->pio_address = pio;
	ha->pio_length = pio_len;
	ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
	if (!ha->reg) {
		ql4_printk(KERN_ERR, ha,
		    "cannot remap MMIO, aborting\n");

		goto iospace_error_exit;
	}

	return 0;

iospace_error_exit:
	return -ENOMEM;
}

static struct isp_operations qla4xxx_isp_ops = {
	.iospace_config         = qla4xxx_iospace_config,
	.pci_config             = qla4xxx_pci_config,
	.disable_intrs          = qla4xxx_disable_intrs,
	.enable_intrs           = qla4xxx_enable_intrs,
	.start_firmware         = qla4xxx_start_firmware,
	.intr_handler           = qla4xxx_intr_handler,
	.interrupt_service_routine = qla4xxx_interrupt_service_routine,
	.reset_chip             = qla4xxx_soft_reset,
	.reset_firmware         = qla4xxx_hw_reset,
	.queue_iocb             = qla4xxx_queue_iocb,
	.complete_iocb          = qla4xxx_complete_iocb,
	.rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
	.rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
	.get_sys_info           = qla4xxx_get_sys_info,
	.queue_mailbox_command	= qla4xxx_queue_mbox_cmd,
	.process_mailbox_interrupt = qla4xxx_process_mbox_intr,
};

static struct isp_operations qla4_82xx_isp_ops = {
	.iospace_config         = qla4_8xxx_iospace_config,
	.pci_config             = qla4_8xxx_pci_config,
	.disable_intrs          = qla4_82xx_disable_intrs,
	.enable_intrs           = qla4_82xx_enable_intrs,
	.start_firmware         = qla4_8xxx_load_risc,
	.restart_firmware	= qla4_82xx_try_start_fw,
	.intr_handler           = qla4_82xx_intr_handler,
	.interrupt_service_routine = qla4_82xx_interrupt_service_routine,
	.need_reset		= qla4_8xxx_need_reset,
	.reset_chip             = qla4_82xx_isp_reset,
	.reset_firmware         = qla4_8xxx_stop_firmware,
	.queue_iocb             = qla4_82xx_queue_iocb,
	.complete_iocb          = qla4_82xx_complete_iocb,
	.rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
	.rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
	.get_sys_info           = qla4_8xxx_get_sys_info,
	.rd_reg_direct		= qla4_82xx_rd_32,
	.wr_reg_direct		= qla4_82xx_wr_32,
	.rd_reg_indirect	= qla4_82xx_md_rd_32,
	.wr_reg_indirect	= qla4_82xx_md_wr_32,
	.idc_lock		= qla4_82xx_idc_lock,
	.idc_unlock		= qla4_82xx_idc_unlock,
	.rom_lock_recovery	= qla4_82xx_rom_lock_recovery,
	.queue_mailbox_command	= qla4_82xx_queue_mbox_cmd,
	.process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
};

static struct isp_operations qla4_83xx_isp_ops = {
	.iospace_config		= qla4_8xxx_iospace_config,
	.pci_config		= qla4_8xxx_pci_config,
	.disable_intrs		= qla4_83xx_disable_intrs,
	.enable_intrs		= qla4_83xx_enable_intrs,
	.start_firmware		= qla4_8xxx_load_risc,
	.restart_firmware	= qla4_83xx_start_firmware,
	.intr_handler		= qla4_83xx_intr_handler,
	.interrupt_service_routine = qla4_83xx_interrupt_service_routine,
	.need_reset		= qla4_8xxx_need_reset,
	.reset_chip		= qla4_83xx_isp_reset,
	.reset_firmware		= qla4_8xxx_stop_firmware,
	.queue_iocb		= qla4_83xx_queue_iocb,
	.complete_iocb		= qla4_83xx_complete_iocb,
	.rd_shdw_req_q_out	= qla4xxx_rd_shdw_req_q_out,
	.rd_shdw_rsp_q_in	= qla4xxx_rd_shdw_rsp_q_in,
	.get_sys_info		= qla4_8xxx_get_sys_info,
	.rd_reg_direct		= qla4_83xx_rd_reg,
	.wr_reg_direct		= qla4_83xx_wr_reg,
	.rd_reg_indirect	= qla4_83xx_rd_reg_indirect,
	.wr_reg_indirect	= qla4_83xx_wr_reg_indirect,
	.idc_lock		= qla4_83xx_drv_lock,
	.idc_unlock		= qla4_83xx_drv_unlock,
	.rom_lock_recovery	= qla4_83xx_rom_lock_recovery,
	.queue_mailbox_command	= qla4_83xx_queue_mbox_cmd,
	.process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
};

uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
{
	return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
}

uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
{
	return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
}

uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
{
	return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
}

uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
{
	return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
}

static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
{
	struct scsi_qla_host *ha = data;
	char *str = buf;
	int rc;

	switch (type) {
	case ISCSI_BOOT_ETH_FLAGS:
		rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
		break;
	case ISCSI_BOOT_ETH_INDEX:
		rc = sprintf(str, "0\n");
		break;
	case ISCSI_BOOT_ETH_MAC:
		rc = sysfs_format_mac(str, ha->my_mac,
				      MAC_ADDR_LEN);
		break;
	default:
		rc = -ENOSYS;
		break;
	}
	return rc;
}

static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
{
	int rc;

	switch (type) {
	case ISCSI_BOOT_ETH_FLAGS:
	case ISCSI_BOOT_ETH_MAC:
	case ISCSI_BOOT_ETH_INDEX:
		rc = S_IRUGO;
		break;
	default:
		rc = 0;
		break;
	}
	return rc;
}

static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
{
	struct scsi_qla_host *ha = data;
	char *str = buf;
	int rc;

	switch (type) {
	case ISCSI_BOOT_INI_INITIATOR_NAME:
		rc = sprintf(str, "%s\n", ha->name_string);
		break;
	default:
		rc = -ENOSYS;
		break;
	}
	return rc;
}

static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
{
	int rc;

	switch (type) {
	case ISCSI_BOOT_INI_INITIATOR_NAME:
		rc = S_IRUGO;
		break;
	default:
		rc = 0;
		break;
	}
	return rc;
}

static ssize_t
qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
			   char *buf)
{
	struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
	char *str = buf;
	int rc;

	switch (type) {
	case ISCSI_BOOT_TGT_NAME:
		rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
		break;
	case ISCSI_BOOT_TGT_IP_ADDR:
		if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
			rc = sprintf(buf, "%pI4\n",
				     &boot_conn->dest_ipaddr.ip_address);
		else
			rc = sprintf(str, "%pI6\n",
				     &boot_conn->dest_ipaddr.ip_address);
		break;
	case ISCSI_BOOT_TGT_PORT:
			rc = sprintf(str, "%d\n", boot_conn->dest_port);
		break;
	case ISCSI_BOOT_TGT_CHAP_NAME:
		rc = sprintf(str,  "%.*s\n",
			     boot_conn->chap.target_chap_name_length,
			     (char *)&boot_conn->chap.target_chap_name);
		break;
	case ISCSI_BOOT_TGT_CHAP_SECRET:
		rc = sprintf(str,  "%.*s\n",
			     boot_conn->chap.target_secret_length,
			     (char *)&boot_conn->chap.target_secret);
		break;
	case ISCSI_BOOT_TGT_REV_CHAP_NAME:
		rc = sprintf(str,  "%.*s\n",
			     boot_conn->chap.intr_chap_name_length,
			     (char *)&boot_conn->chap.intr_chap_name);
		break;
	case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
		rc = sprintf(str,  "%.*s\n",
			     boot_conn->chap.intr_secret_length,
			     (char *)&boot_conn->chap.intr_secret);
		break;
	case ISCSI_BOOT_TGT_FLAGS:
		rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
		break;
	case ISCSI_BOOT_TGT_NIC_ASSOC:
		rc = sprintf(str, "0\n");
		break;
	default:
		rc = -ENOSYS;
		break;
	}
	return rc;
}

static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
{
	struct scsi_qla_host *ha = data;
	struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);

	return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
}

static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
{
	struct scsi_qla_host *ha = data;
	struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);

	return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
}

static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
{
	int rc;

	switch (type) {
	case ISCSI_BOOT_TGT_NAME:
	case ISCSI_BOOT_TGT_IP_ADDR:
	case ISCSI_BOOT_TGT_PORT:
	case ISCSI_BOOT_TGT_CHAP_NAME:
	case ISCSI_BOOT_TGT_CHAP_SECRET:
	case ISCSI_BOOT_TGT_REV_CHAP_NAME:
	case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
	case ISCSI_BOOT_TGT_NIC_ASSOC:
	case ISCSI_BOOT_TGT_FLAGS:
		rc = S_IRUGO;
		break;
	default:
		rc = 0;
		break;
	}
	return rc;
}

static void qla4xxx_boot_release(void *data)
{
	struct scsi_qla_host *ha = data;

	scsi_host_put(ha->host);
}

static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
{
	dma_addr_t buf_dma;
	uint32_t addr, pri_addr, sec_addr;
	uint32_t offset;
	uint16_t func_num;
	uint8_t val;
	uint8_t *buf = NULL;
	size_t size = 13 * sizeof(uint8_t);
	int ret = QLA_SUCCESS;

	func_num = PCI_FUNC(ha->pdev->devfn);

	ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
		   __func__, ha->pdev->device, func_num);

	if (is_qla40XX(ha)) {
		if (func_num == 1) {
			addr = NVRAM_PORT0_BOOT_MODE;
			pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
			sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
		} else if (func_num == 3) {
			addr = NVRAM_PORT1_BOOT_MODE;
			pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
			sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
		} else {
			ret = QLA_ERROR;
			goto exit_boot_info;
		}

		/* Check Boot Mode */
		val = rd_nvram_byte(ha, addr);
		if (!(val & 0x07)) {
			DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
					  "options : 0x%x\n", __func__, val));
			ret = QLA_ERROR;
			goto exit_boot_info;
		}

		/* get primary valid target index */
		val = rd_nvram_byte(ha, pri_addr);
		if (val & BIT_7)
			ddb_index[0] = (val & 0x7f);

		/* get secondary valid target index */
		val = rd_nvram_byte(ha, sec_addr);
		if (val & BIT_7)
			ddb_index[1] = (val & 0x7f);

	} else if (is_qla80XX(ha)) {
		buf = dma_alloc_coherent(&ha->pdev->dev, size,
					 &buf_dma, GFP_KERNEL);
		if (!buf) {
			DEBUG2(ql4_printk(KERN_ERR, ha,
					  "%s: Unable to allocate dma buffer\n",
					   __func__));
			ret = QLA_ERROR;
			goto exit_boot_info;
		}

		if (ha->port_num == 0)
			offset = BOOT_PARAM_OFFSET_PORT0;
		else if (ha->port_num == 1)
			offset = BOOT_PARAM_OFFSET_PORT1;
		else {
			ret = QLA_ERROR;
			goto exit_boot_info_free;
		}
		addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
		       offset;
		if (qla4xxx_get_flash(ha, buf_dma, addr,
				      13 * sizeof(uint8_t)) != QLA_SUCCESS) {
			DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
					  " failed\n", ha->host_no, __func__));
			ret = QLA_ERROR;
			goto exit_boot_info_free;
		}
		/* Check Boot Mode */
		if (!(buf[1] & 0x07)) {
			DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
					  " : 0x%x\n", buf[1]));
			ret = QLA_ERROR;
			goto exit_boot_info_free;
		}

		/* get primary valid target index */
		if (buf[2] & BIT_7)
			ddb_index[0] = buf[2] & 0x7f;

		/* get secondary valid target index */
		if (buf[11] & BIT_7)
			ddb_index[1] = buf[11] & 0x7f;
	} else {
		ret = QLA_ERROR;
		goto exit_boot_info;
	}

	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
			  " target ID %d\n", __func__, ddb_index[0],
			  ddb_index[1]));

exit_boot_info_free:
	dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
exit_boot_info:
	ha->pri_ddb_idx = ddb_index[0];
	ha->sec_ddb_idx = ddb_index[1];
	return ret;
}

/**
 * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
 * @ha: pointer to adapter structure
 * @username: CHAP username to be returned
 * @password: CHAP password to be returned
 *
 * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
 * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
 * So from the CHAP cache find the first BIDI CHAP entry and set it
 * to the boot record in sysfs.
 **/
static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
			    char *password)
{
	int i, ret = -EINVAL;
	int max_chap_entries = 0;
	struct ql4_chap_table *chap_table;

	if (is_qla80XX(ha))
		max_chap_entries = (ha->hw.flt_chap_size / 2) /
						sizeof(struct ql4_chap_table);
	else
		max_chap_entries = MAX_CHAP_ENTRIES_40XX;

	if (!ha->chap_list) {
		ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
		return ret;
	}

	mutex_lock(&ha->chap_sem);
	for (i = 0; i < max_chap_entries; i++) {
		chap_table = (struct ql4_chap_table *)ha->chap_list + i;
		if (chap_table->cookie !=
		    __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
			continue;
		}

		if (chap_table->flags & BIT_7) /* local */
			continue;

		if (!(chap_table->flags & BIT_6)) /* Not BIDI */
			continue;

		strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
		strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
		ret = 0;
		break;
	}
	mutex_unlock(&ha->chap_sem);

	return ret;
}


static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
				   struct ql4_boot_session_info *boot_sess,
				   uint16_t ddb_index)
{
	struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
	struct dev_db_entry *fw_ddb_entry;
	dma_addr_t fw_ddb_entry_dma;
	uint16_t idx;
	uint16_t options;
	int ret = QLA_SUCCESS;

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Unable to allocate dma buffer.\n",
				  __func__));
		ret = QLA_ERROR;
		return ret;
	}

	if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
				   fw_ddb_entry_dma, ddb_index)) {
		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
				  "index [%d]\n", __func__, ddb_index));
		ret = QLA_ERROR;
		goto exit_boot_target;
	}

	/* Update target name and IP from DDB */
	memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
	       min(sizeof(boot_sess->target_name),
		   sizeof(fw_ddb_entry->iscsi_name)));

	options = le16_to_cpu(fw_ddb_entry->options);
	if (options & DDB_OPT_IPV6_DEVICE) {
		memcpy(&boot_conn->dest_ipaddr.ip_address,
		       &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
	} else {
		boot_conn->dest_ipaddr.ip_type = 0x1;
		memcpy(&boot_conn->dest_ipaddr.ip_address,
		       &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
	}

	boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);

	/* update chap information */
	idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);

	if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))	{

		DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));

		ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
				       target_chap_name,
				       (char *)&boot_conn->chap.target_secret,
				       idx);
		if (ret) {
			ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
			ret = QLA_ERROR;
			goto exit_boot_target;
		}

		boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
		boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
	}

	if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {

		DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));

		ret = qla4xxx_get_bidi_chap(ha,
				    (char *)&boot_conn->chap.intr_chap_name,
				    (char *)&boot_conn->chap.intr_secret);

		if (ret) {
			ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
			ret = QLA_ERROR;
			goto exit_boot_target;
		}

		boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
		boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
	}

exit_boot_target:
	dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
			  fw_ddb_entry, fw_ddb_entry_dma);
	return ret;
}

static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
{
	uint16_t ddb_index[2];
	int ret = QLA_ERROR;
	int rval;

	memset(ddb_index, 0, sizeof(ddb_index));
	ddb_index[0] = 0xffff;
	ddb_index[1] = 0xffff;
	ret = get_fw_boot_info(ha, ddb_index);
	if (ret != QLA_SUCCESS) {
		DEBUG2(ql4_printk(KERN_INFO, ha,
				"%s: No boot target configured.\n", __func__));
		return ret;
	}

	if (ql4xdisablesysfsboot)
		return QLA_SUCCESS;

	if (ddb_index[0] == 0xffff)
		goto sec_target;

	rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
				      ddb_index[0]);
	if (rval != QLA_SUCCESS) {
		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
				  "configured\n", __func__));
	} else
		ret = QLA_SUCCESS;

sec_target:
	if (ddb_index[1] == 0xffff)
		goto exit_get_boot_info;

	rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
				      ddb_index[1]);
	if (rval != QLA_SUCCESS) {
		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
				  " configured\n", __func__));
	} else
		ret = QLA_SUCCESS;

exit_get_boot_info:
	return ret;
}

static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
{
	struct iscsi_boot_kobj *boot_kobj;

	if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
		return QLA_ERROR;

	if (ql4xdisablesysfsboot) {
		ql4_printk(KERN_INFO, ha,
			   "%s: syfsboot disabled - driver will trigger login "
			   "and publish session for discovery .\n", __func__);
		return QLA_SUCCESS;
	}


	ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
	if (!ha->boot_kset)
		goto kset_free;

	if (!scsi_host_get(ha->host))
		goto kset_free;
	boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
					     qla4xxx_show_boot_tgt_pri_info,
					     qla4xxx_tgt_get_attr_visibility,
					     qla4xxx_boot_release);
	if (!boot_kobj)
		goto put_host;

	if (!scsi_host_get(ha->host))
		goto kset_free;
	boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
					     qla4xxx_show_boot_tgt_sec_info,
					     qla4xxx_tgt_get_attr_visibility,
					     qla4xxx_boot_release);
	if (!boot_kobj)
		goto put_host;

	if (!scsi_host_get(ha->host))
		goto kset_free;
	boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
					       qla4xxx_show_boot_ini_info,
					       qla4xxx_ini_get_attr_visibility,
					       qla4xxx_boot_release);
	if (!boot_kobj)
		goto put_host;

	if (!scsi_host_get(ha->host))
		goto kset_free;
	boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
					       qla4xxx_show_boot_eth_info,
					       qla4xxx_eth_get_attr_visibility,
					       qla4xxx_boot_release);
	if (!boot_kobj)
		goto put_host;

	return QLA_SUCCESS;

put_host:
	scsi_host_put(ha->host);
kset_free:
	iscsi_boot_destroy_kset(ha->boot_kset);
	return -ENOMEM;
}


static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
				  struct ql4_tuple_ddb *tddb)
{
	struct scsi_qla_host *ha;
	struct iscsi_cls_session *cls_sess;
	struct iscsi_cls_conn *cls_conn;
	struct iscsi_session *sess;
	struct iscsi_conn *conn;

	DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
	ha = ddb_entry->ha;
	cls_sess = ddb_entry->sess;
	sess = cls_sess->dd_data;
	cls_conn = ddb_entry->conn;
	conn = cls_conn->dd_data;

	tddb->tpgt = sess->tpgt;
	tddb->port = conn->persistent_port;
	strlcpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
	strlcpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
}

static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
				      struct ql4_tuple_ddb *tddb,
				      uint8_t *flash_isid)
{
	uint16_t options = 0;

	tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
	memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
	       min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));

	options = le16_to_cpu(fw_ddb_entry->options);
	if (options & DDB_OPT_IPV6_DEVICE)
		sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
	else
		sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);

	tddb->port = le16_to_cpu(fw_ddb_entry->port);

	if (flash_isid == NULL)
		memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
		       sizeof(tddb->isid));
	else
		memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
}

static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
				     struct ql4_tuple_ddb *old_tddb,
				     struct ql4_tuple_ddb *new_tddb,
				     uint8_t is_isid_compare)
{
	if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
		return QLA_ERROR;

	if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
		return QLA_ERROR;

	if (old_tddb->port != new_tddb->port)
		return QLA_ERROR;

	/* For multi sessions, driver generates the ISID, so do not compare
	 * ISID in reset path since it would be a comparison between the
	 * driver generated ISID and firmware generated ISID. This could
	 * lead to adding duplicated DDBs in the list as driver generated
	 * ISID would not match firmware generated ISID.
	 */
	if (is_isid_compare) {
		DEBUG2(ql4_printk(KERN_INFO, ha,
			"%s: old ISID [%pmR] New ISID [%pmR]\n",
			__func__, old_tddb->isid, new_tddb->isid));

		if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
			   sizeof(old_tddb->isid)))
			return QLA_ERROR;
	}

	DEBUG2(ql4_printk(KERN_INFO, ha,
			  "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
			  old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
			  old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
			  new_tddb->ip_addr, new_tddb->iscsi_name));

	return QLA_SUCCESS;
}

static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
				     struct dev_db_entry *fw_ddb_entry,
				     uint32_t *index)
{
	struct ddb_entry *ddb_entry;
	struct ql4_tuple_ddb *fw_tddb = NULL;
	struct ql4_tuple_ddb *tmp_tddb = NULL;
	int idx;
	int ret = QLA_ERROR;

	fw_tddb = vzalloc(sizeof(*fw_tddb));
	if (!fw_tddb) {
		DEBUG2(ql4_printk(KERN_WARNING, ha,
				  "Memory Allocation failed.\n"));
		ret = QLA_SUCCESS;
		goto exit_check;
	}

	tmp_tddb = vzalloc(sizeof(*tmp_tddb));
	if (!tmp_tddb) {
		DEBUG2(ql4_printk(KERN_WARNING, ha,
				  "Memory Allocation failed.\n"));
		ret = QLA_SUCCESS;
		goto exit_check;
	}

	qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);

	for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
		ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
		if (ddb_entry == NULL)
			continue;

		qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
		if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
			ret = QLA_SUCCESS; /* found */
			if (index != NULL)
				*index = idx;
			goto exit_check;
		}
	}

exit_check:
	if (fw_tddb)
		vfree(fw_tddb);
	if (tmp_tddb)
		vfree(tmp_tddb);
	return ret;
}

/**
 * qla4xxx_check_existing_isid - check if target with same isid exist
 *				 in target list
 * @list_nt: list of target
 * @isid: isid to check
 *
 * This routine return QLA_SUCCESS if target with same isid exist
 **/
static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
{
	struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
	struct dev_db_entry *fw_ddb_entry;

	list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
		fw_ddb_entry = &nt_ddb_idx->fw_ddb;

		if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
			   sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
			return QLA_SUCCESS;
		}
	}
	return QLA_ERROR;
}

/**
 * qla4xxx_update_isid - compare ddbs and updated isid
 * @ha: Pointer to host adapter structure.
 * @list_nt: list of nt target
 * @fw_ddb_entry: firmware ddb entry
 *
 * This routine update isid if ddbs have same iqn, same isid and
 * different IP addr.
 * Return QLA_SUCCESS if isid is updated.
 **/
static int qla4xxx_update_isid(struct scsi_qla_host *ha,
			       struct list_head *list_nt,
			       struct dev_db_entry *fw_ddb_entry)
{
	uint8_t base_value, i;

	base_value = fw_ddb_entry->isid[1] & 0x1f;
	for (i = 0; i < 8; i++) {
		fw_ddb_entry->isid[1] = (base_value | (i << 5));
		if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
			break;
	}

	if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
		return QLA_ERROR;

	return QLA_SUCCESS;
}

/**
 * qla4xxx_should_update_isid - check if isid need to update
 * @ha: Pointer to host adapter structure.
 * @old_tddb: ddb tuple
 * @new_tddb: ddb tuple
 *
 * Return QLA_SUCCESS if different IP, different PORT, same iqn,
 * same isid
 **/
static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
				      struct ql4_tuple_ddb *old_tddb,
				      struct ql4_tuple_ddb *new_tddb)
{
	if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
		/* Same ip */
		if (old_tddb->port == new_tddb->port)
			return QLA_ERROR;
	}

	if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
		/* different iqn */
		return QLA_ERROR;

	if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
		   sizeof(old_tddb->isid)))
		/* different isid */
		return QLA_ERROR;

	return QLA_SUCCESS;
}

/**
 * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
 * @ha: Pointer to host adapter structure.
 * @list_nt: list of nt target.
 * @fw_ddb_entry: firmware ddb entry.
 *
 * This routine check if fw_ddb_entry already exists in list_nt to avoid
 * duplicate ddb in list_nt.
 * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
 * Note: This function also update isid of DDB if required.
 **/

static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
				       struct list_head *list_nt,
				       struct dev_db_entry *fw_ddb_entry)
{
	struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
	struct ql4_tuple_ddb *fw_tddb = NULL;
	struct ql4_tuple_ddb *tmp_tddb = NULL;
	int rval, ret = QLA_ERROR;

	fw_tddb = vzalloc(sizeof(*fw_tddb));
	if (!fw_tddb) {
		DEBUG2(ql4_printk(KERN_WARNING, ha,
				  "Memory Allocation failed.\n"));
		ret = QLA_SUCCESS;
		goto exit_check;
	}

	tmp_tddb = vzalloc(sizeof(*tmp_tddb));
	if (!tmp_tddb) {
		DEBUG2(ql4_printk(KERN_WARNING, ha,
				  "Memory Allocation failed.\n"));
		ret = QLA_SUCCESS;
		goto exit_check;
	}

	qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);

	list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
		qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
					  nt_ddb_idx->flash_isid);
		ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
		/* found duplicate ddb */
		if (ret == QLA_SUCCESS)
			goto exit_check;
	}

	list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
		qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);

		ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
		if (ret == QLA_SUCCESS) {
			rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
			if (rval == QLA_SUCCESS)
				ret = QLA_ERROR;
			else
				ret = QLA_SUCCESS;

			goto exit_check;
		}
	}

exit_check:
	if (fw_tddb)
		vfree(fw_tddb);
	if (tmp_tddb)
		vfree(tmp_tddb);
	return ret;
}

static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
{
	struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;

	list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
		list_del_init(&ddb_idx->list);
		vfree(ddb_idx);
	}
}

static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
					struct dev_db_entry *fw_ddb_entry)
{
	struct iscsi_endpoint *ep;
	struct sockaddr_in *addr;
	struct sockaddr_in6 *addr6;
	struct sockaddr *t_addr;
	struct sockaddr_storage *dst_addr;
	char *ip;

	/* TODO: need to destroy on unload iscsi_endpoint*/
	dst_addr = vmalloc(sizeof(*dst_addr));
	if (!dst_addr)
		return NULL;

	if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
		t_addr = (struct sockaddr *)dst_addr;
		t_addr->sa_family = AF_INET6;
		addr6 = (struct sockaddr_in6 *)dst_addr;
		ip = (char *)&addr6->sin6_addr;
		memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
		addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));

	} else {
		t_addr = (struct sockaddr *)dst_addr;
		t_addr->sa_family = AF_INET;
		addr = (struct sockaddr_in *)dst_addr;
		ip = (char *)&addr->sin_addr;
		memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
		addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
	}

	ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
	vfree(dst_addr);
	return ep;
}

static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
{
	if (ql4xdisablesysfsboot)
		return QLA_SUCCESS;
	if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
		return QLA_ERROR;
	return QLA_SUCCESS;
}

static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
					  struct ddb_entry *ddb_entry,
					  uint16_t idx)
{
	uint16_t def_timeout;

	ddb_entry->ddb_type = FLASH_DDB;
	ddb_entry->fw_ddb_index = INVALID_ENTRY;
	ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
	ddb_entry->ha = ha;
	ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
	ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
	ddb_entry->chap_tbl_idx = INVALID_ENTRY;

	atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
	atomic_set(&ddb_entry->relogin_timer, 0);
	atomic_set(&ddb_entry->relogin_retry_count, 0);
	def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
	ddb_entry->default_relogin_timeout =
		(def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
		def_timeout : LOGIN_TOV;
	ddb_entry->default_time2wait =
		le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);

	if (ql4xdisablesysfsboot &&
	    (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
		set_bit(DF_BOOT_TGT, &ddb_entry->flags);
}

static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
{
	uint32_t idx = 0;
	uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
	uint32_t sts[MBOX_REG_COUNT];
	uint32_t ip_state;
	unsigned long wtime;
	int ret;

	wtime = jiffies + (HZ * IP_CONFIG_TOV);
	do {
		for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
			if (ip_idx[idx] == -1)
				continue;

			ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);

			if (ret == QLA_ERROR) {
				ip_idx[idx] = -1;
				continue;
			}

			ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;

			DEBUG2(ql4_printk(KERN_INFO, ha,
					  "Waiting for IP state for idx = %d, state = 0x%x\n",
					  ip_idx[idx], ip_state));
			if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
			    ip_state == IP_ADDRSTATE_INVALID ||
			    ip_state == IP_ADDRSTATE_PREFERRED ||
			    ip_state == IP_ADDRSTATE_DEPRICATED ||
			    ip_state == IP_ADDRSTATE_DISABLING)
				ip_idx[idx] = -1;
		}

		/* Break if all IP states checked */
		if ((ip_idx[0] == -1) &&
		    (ip_idx[1] == -1) &&
		    (ip_idx[2] == -1) &&
		    (ip_idx[3] == -1))
			break;
		schedule_timeout_uninterruptible(HZ);
	} while (time_after(wtime, jiffies));
}

static int qla4xxx_cmp_fw_stentry(struct dev_db_entry *fw_ddb_entry,
				  struct dev_db_entry *flash_ddb_entry)
{
	uint16_t options = 0;
	size_t ip_len = IP_ADDR_LEN;

	options = le16_to_cpu(fw_ddb_entry->options);
	if (options & DDB_OPT_IPV6_DEVICE)
		ip_len = IPv6_ADDR_LEN;

	if (memcmp(fw_ddb_entry->ip_addr, flash_ddb_entry->ip_addr, ip_len))
		return QLA_ERROR;

	if (memcmp(&fw_ddb_entry->isid[0], &flash_ddb_entry->isid[0],
		   sizeof(fw_ddb_entry->isid)))
		return QLA_ERROR;

	if (memcmp(&fw_ddb_entry->port, &flash_ddb_entry->port,
		   sizeof(fw_ddb_entry->port)))
		return QLA_ERROR;

	return QLA_SUCCESS;
}

static int qla4xxx_find_flash_st_idx(struct scsi_qla_host *ha,
				     struct dev_db_entry *fw_ddb_entry,
				     uint32_t fw_idx, uint32_t *flash_index)
{
	struct dev_db_entry *flash_ddb_entry;
	dma_addr_t flash_ddb_entry_dma;
	uint32_t idx = 0;
	int max_ddbs;
	int ret = QLA_ERROR, status;

	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
				     MAX_DEV_DB_ENTRIES;

	flash_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
					 &flash_ddb_entry_dma);
	if (flash_ddb_entry == NULL || fw_ddb_entry == NULL) {
		ql4_printk(KERN_ERR, ha, "Out of memory\n");
		goto exit_find_st_idx;
	}

	status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
					  flash_ddb_entry_dma, fw_idx);
	if (status == QLA_SUCCESS) {
		status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
		if (status == QLA_SUCCESS) {
			*flash_index = fw_idx;
			ret = QLA_SUCCESS;
			goto exit_find_st_idx;
		}
	}

	for (idx = 0; idx < max_ddbs; idx++) {
		status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
						  flash_ddb_entry_dma, idx);
		if (status == QLA_ERROR)
			continue;

		status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
		if (status == QLA_SUCCESS) {
			*flash_index = idx;
			ret = QLA_SUCCESS;
			goto exit_find_st_idx;
		}
	}

	if (idx == max_ddbs)
		ql4_printk(KERN_ERR, ha, "Failed to find ST [%d] in flash\n",
			   fw_idx);

exit_find_st_idx:
	if (flash_ddb_entry)
		dma_pool_free(ha->fw_ddb_dma_pool, flash_ddb_entry,
			      flash_ddb_entry_dma);

	return ret;
}

static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
				  struct list_head *list_st)
{
	struct qla_ddb_index  *st_ddb_idx;
	int max_ddbs;
	int fw_idx_size;
	struct dev_db_entry *fw_ddb_entry;
	dma_addr_t fw_ddb_dma;
	int ret;
	uint32_t idx = 0, next_idx = 0;
	uint32_t state = 0, conn_err = 0;
	uint32_t flash_index = -1;
	uint16_t conn_id = 0;

	fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
				      &fw_ddb_dma);
	if (fw_ddb_entry == NULL) {
		DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
		goto exit_st_list;
	}

	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
				     MAX_DEV_DB_ENTRIES;
	fw_idx_size = sizeof(struct qla_ddb_index);

	for (idx = 0; idx < max_ddbs; idx = next_idx) {
		ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
					      NULL, &next_idx, &state,
					      &conn_err, NULL, &conn_id);
		if (ret == QLA_ERROR)
			break;

		/* Ignore DDB if invalid state (unassigned) */
		if (state == DDB_DS_UNASSIGNED)
			goto continue_next_st;

		/* Check if ST, add to the list_st */
		if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
			goto continue_next_st;

		st_ddb_idx = vzalloc(fw_idx_size);
		if (!st_ddb_idx)
			break;

		ret = qla4xxx_find_flash_st_idx(ha, fw_ddb_entry, idx,
						&flash_index);
		if (ret == QLA_ERROR) {
			ql4_printk(KERN_ERR, ha,
				   "No flash entry for ST at idx [%d]\n", idx);
			st_ddb_idx->flash_ddb_idx = idx;
		} else {
			ql4_printk(KERN_INFO, ha,
				   "ST at idx [%d] is stored at flash [%d]\n",
				   idx, flash_index);
			st_ddb_idx->flash_ddb_idx = flash_index;
		}

		st_ddb_idx->fw_ddb_idx = idx;

		list_add_tail(&st_ddb_idx->list, list_st);
continue_next_st:
		if (next_idx == 0)
			break;
	}

exit_st_list:
	if (fw_ddb_entry)
		dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
}

/**
 * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
 * @ha: pointer to adapter structure
 * @list_ddb: List from which failed ddb to be removed
 *
 * Iterate over the list of DDBs and find and remove DDBs that are either in
 * no connection active state or failed state
 **/
static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
				      struct list_head *list_ddb)
{
	struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
	uint32_t next_idx = 0;
	uint32_t state = 0, conn_err = 0;
	int ret;

	list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
		ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
					      NULL, 0, NULL, &next_idx, &state,
					      &conn_err, NULL, NULL);
		if (ret == QLA_ERROR)
			continue;

		if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
		    state == DDB_DS_SESSION_FAILED) {
			list_del_init(&ddb_idx->list);
			vfree(ddb_idx);
		}
	}
}

static void qla4xxx_update_sess_disc_idx(struct scsi_qla_host *ha,
					 struct ddb_entry *ddb_entry,
					 struct dev_db_entry *fw_ddb_entry)
{
	struct iscsi_cls_session *cls_sess;
	struct iscsi_session *sess;
	uint32_t max_ddbs = 0;
	uint16_t ddb_link = -1;

	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
				     MAX_DEV_DB_ENTRIES;

	cls_sess = ddb_entry->sess;
	sess = cls_sess->dd_data;

	ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
	if (ddb_link < max_ddbs)
		sess->discovery_parent_idx = ddb_link;
	else
		sess->discovery_parent_idx = DDB_NO_LINK;
}

static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
				   struct dev_db_entry *fw_ddb_entry,
				   int is_reset, uint16_t idx)
{
	struct iscsi_cls_session *cls_sess;
	struct iscsi_session *sess;
	struct iscsi_cls_conn *cls_conn;
	struct iscsi_endpoint *ep;
	uint16_t cmds_max = 32;
	uint16_t conn_id = 0;
	uint32_t initial_cmdsn = 0;
	int ret = QLA_SUCCESS;

	struct ddb_entry *ddb_entry = NULL;

	/* Create session object, with INVALID_ENTRY,
	 * the targer_id would get set when we issue the login
	 */
	cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
				       cmds_max, sizeof(struct ddb_entry),
				       sizeof(struct ql4_task_data),
				       initial_cmdsn, INVALID_ENTRY);
	if (!cls_sess) {
		ret = QLA_ERROR;
		goto exit_setup;
	}

	/*
	 * so calling module_put function to decrement the
	 * reference count.
	 **/
	module_put(qla4xxx_iscsi_transport.owner);
	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ddb_entry->sess = cls_sess;

	cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
	memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
	       sizeof(struct dev_db_entry));

	qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);

	cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);

	if (!cls_conn) {
		ret = QLA_ERROR;
		goto exit_setup;
	}

	ddb_entry->conn = cls_conn;

	/* Setup ep, for displaying attributes in sysfs */
	ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
	if (ep) {
		ep->conn = cls_conn;
		cls_conn->ep = ep;
	} else {
		DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
		ret = QLA_ERROR;
		goto exit_setup;
	}

	/* Update sess/conn params */
	qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
	qla4xxx_update_sess_disc_idx(ha, ddb_entry, fw_ddb_entry);

	if (is_reset == RESET_ADAPTER) {
		iscsi_block_session(cls_sess);
		/* Use the relogin path to discover new devices
		 *  by short-circuting the logic of setting
		 *  timer to relogin - instead set the flags
		 *  to initiate login right away.
		 */
		set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
		set_bit(DF_RELOGIN, &ddb_entry->flags);
	}

exit_setup:
	return ret;
}

static void qla4xxx_update_fw_ddb_link(struct scsi_qla_host *ha,
				       struct list_head *list_ddb,
				       struct dev_db_entry *fw_ddb_entry)
{
	struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
	uint16_t ddb_link;

	ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);

	list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
		if (ddb_idx->fw_ddb_idx == ddb_link) {
			DEBUG2(ql4_printk(KERN_INFO, ha,
					  "Updating NT parent idx from [%d] to [%d]\n",
					  ddb_link, ddb_idx->flash_ddb_idx));
			fw_ddb_entry->ddb_link =
					    cpu_to_le16(ddb_idx->flash_ddb_idx);
			return;
		}
	}
}

static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
				  struct list_head *list_nt,
				  struct list_head *list_st,
				  int is_reset)
{
	struct dev_db_entry *fw_ddb_entry;
	struct ddb_entry *ddb_entry = NULL;
	dma_addr_t fw_ddb_dma;
	int max_ddbs;
	int fw_idx_size;
	int ret;
	uint32_t idx = 0, next_idx = 0;
	uint32_t state = 0, conn_err = 0;
	uint32_t ddb_idx = -1;
	uint16_t conn_id = 0;
	uint16_t ddb_link = -1;
	struct qla_ddb_index  *nt_ddb_idx;

	fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
				      &fw_ddb_dma);
	if (fw_ddb_entry == NULL) {
		DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
		goto exit_nt_list;
	}
	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
				     MAX_DEV_DB_ENTRIES;
	fw_idx_size = sizeof(struct qla_ddb_index);

	for (idx = 0; idx < max_ddbs; idx = next_idx) {
		ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
					      NULL, &next_idx, &state,
					      &conn_err, NULL, &conn_id);
		if (ret == QLA_ERROR)
			break;

		if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
			goto continue_next_nt;

		/* Check if NT, then add to list it */
		if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
			goto continue_next_nt;

		ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
		if (ddb_link < max_ddbs)
			qla4xxx_update_fw_ddb_link(ha, list_st, fw_ddb_entry);

		if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
		    state == DDB_DS_SESSION_FAILED) &&
		    (is_reset == INIT_ADAPTER))
			goto continue_next_nt;

		DEBUG2(ql4_printk(KERN_INFO, ha,
				  "Adding  DDB to session = 0x%x\n", idx));

		if (is_reset == INIT_ADAPTER) {
			nt_ddb_idx = vmalloc(fw_idx_size);
			if (!nt_ddb_idx)
				break;

			nt_ddb_idx->fw_ddb_idx = idx;

			/* Copy original isid as it may get updated in function
			 * qla4xxx_update_isid(). We need original isid in
			 * function qla4xxx_compare_tuple_ddb to find duplicate
			 * target */
			memcpy(&nt_ddb_idx->flash_isid[0],
			       &fw_ddb_entry->isid[0],
			       sizeof(nt_ddb_idx->flash_isid));

			ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
							  fw_ddb_entry);
			if (ret == QLA_SUCCESS) {
				/* free nt_ddb_idx and do not add to list_nt */
				vfree(nt_ddb_idx);
				goto continue_next_nt;
			}

			/* Copy updated isid */
			memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
			       sizeof(struct dev_db_entry));

			list_add_tail(&nt_ddb_idx->list, list_nt);
		} else if (is_reset == RESET_ADAPTER) {
			ret = qla4xxx_is_session_exists(ha, fw_ddb_entry,
							&ddb_idx);
			if (ret == QLA_SUCCESS) {
				ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
								       ddb_idx);
				if (ddb_entry != NULL)
					qla4xxx_update_sess_disc_idx(ha,
								     ddb_entry,
								  fw_ddb_entry);
				goto continue_next_nt;
			}
		}

		ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
		if (ret == QLA_ERROR)
			goto exit_nt_list;

continue_next_nt:
		if (next_idx == 0)
			break;
	}

exit_nt_list:
	if (fw_ddb_entry)
		dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
}

static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
				      struct list_head *list_nt,
				      uint16_t target_id)
{
	struct dev_db_entry *fw_ddb_entry;
	dma_addr_t fw_ddb_dma;
	int max_ddbs;
	int fw_idx_size;
	int ret;
	uint32_t idx = 0, next_idx = 0;
	uint32_t state = 0, conn_err = 0;
	uint16_t conn_id = 0;
	struct qla_ddb_index  *nt_ddb_idx;

	fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
				      &fw_ddb_dma);
	if (fw_ddb_entry == NULL) {
		DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
		goto exit_new_nt_list;
	}
	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
				     MAX_DEV_DB_ENTRIES;
	fw_idx_size = sizeof(struct qla_ddb_index);

	for (idx = 0; idx < max_ddbs; idx = next_idx) {
		ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
					      NULL, &next_idx, &state,
					      &conn_err, NULL, &conn_id);
		if (ret == QLA_ERROR)
			break;

		/* Check if NT, then add it to list */
		if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
			goto continue_next_new_nt;

		if (!(state == DDB_DS_NO_CONNECTION_ACTIVE))
			goto continue_next_new_nt;

		DEBUG2(ql4_printk(KERN_INFO, ha,
				  "Adding  DDB to session = 0x%x\n", idx));

		nt_ddb_idx = vmalloc(fw_idx_size);
		if (!nt_ddb_idx)
			break;

		nt_ddb_idx->fw_ddb_idx = idx;

		ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
		if (ret == QLA_SUCCESS) {
			/* free nt_ddb_idx and do not add to list_nt */
			vfree(nt_ddb_idx);
			goto continue_next_new_nt;
		}

		if (target_id < max_ddbs)
			fw_ddb_entry->ddb_link = cpu_to_le16(target_id);

		list_add_tail(&nt_ddb_idx->list, list_nt);

		ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
					      idx);
		if (ret == QLA_ERROR)
			goto exit_new_nt_list;

continue_next_new_nt:
		if (next_idx == 0)
			break;
	}

exit_new_nt_list:
	if (fw_ddb_entry)
		dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
}

/**
 * qla4xxx_sysfs_ddb_is_non_persistent - check for non-persistence of ddb entry
 * @dev: dev associated with the sysfs entry
 * @data: pointer to flashnode session object
 *
 * Returns:
 *	1: if flashnode entry is non-persistent
 *	0: if flashnode entry is persistent
 **/
static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
{
	struct iscsi_bus_flash_session *fnode_sess;

	if (!iscsi_flashnode_bus_match(dev, NULL))
		return 0;

	fnode_sess = iscsi_dev_to_flash_session(dev);

	return (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT);
}

/**
 * qla4xxx_sysfs_ddb_tgt_create - Create sysfs entry for target
 * @ha: pointer to host
 * @fw_ddb_entry: flash ddb data
 * @idx: target index
 * @user: if set then this call is made from userland else from kernel
 *
 * Returns:
 * On sucess: QLA_SUCCESS
 * On failure: QLA_ERROR
 *
 * This create separate sysfs entries for session and connection attributes of
 * the given fw ddb entry.
 * If this is invoked as a result of a userspace call then the entry is marked
 * as nonpersistent using flash_state field.
 **/
static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
					struct dev_db_entry *fw_ddb_entry,
					uint16_t *idx, int user)
{
	struct iscsi_bus_flash_session *fnode_sess = NULL;
	struct iscsi_bus_flash_conn *fnode_conn = NULL;
	int rc = QLA_ERROR;

	fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,
						 &qla4xxx_iscsi_transport, 0);
	if (!fnode_sess) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to create session sysfs entry for flashnode %d of host%lu\n",
			   __func__, *idx, ha->host_no);
		goto exit_tgt_create;
	}

	fnode_conn = iscsi_create_flashnode_conn(ha->host, fnode_sess,
						 &qla4xxx_iscsi_transport, 0);
	if (!fnode_conn) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to create conn sysfs entry for flashnode %d of host%lu\n",
			   __func__, *idx, ha->host_no);
		goto free_sess;
	}

	if (user) {
		fnode_sess->flash_state = DEV_DB_NON_PERSISTENT;
	} else {
		fnode_sess->flash_state = DEV_DB_PERSISTENT;

		if (*idx == ha->pri_ddb_idx || *idx == ha->sec_ddb_idx)
			fnode_sess->is_boot_target = 1;
		else
			fnode_sess->is_boot_target = 0;
	}

	rc = qla4xxx_copy_from_fwddb_param(fnode_sess, fnode_conn,
					   fw_ddb_entry);
	if (rc)
		goto free_sess;

	ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
		   __func__, fnode_sess->dev.kobj.name);

	ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
		   __func__, fnode_conn->dev.kobj.name);

	return QLA_SUCCESS;

free_sess:
	iscsi_destroy_flashnode_sess(fnode_sess);

exit_tgt_create:
	return QLA_ERROR;
}

/**
 * qla4xxx_sysfs_ddb_add - Add new ddb entry in flash
 * @shost: pointer to host
 * @buf: type of ddb entry (ipv4/ipv6)
 * @len: length of buf
 *
 * This creates new ddb entry in the flash by finding first free index and
 * storing default ddb there. And then create sysfs entry for the new ddb entry.
 **/
static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
				 int len)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	struct device *dev;
	uint16_t idx = 0;
	uint16_t max_ddbs = 0;
	uint32_t options = 0;
	uint32_t rval = QLA_ERROR;

	if (strncasecmp(PORTAL_TYPE_IPV4, buf, 4) &&
	    strncasecmp(PORTAL_TYPE_IPV6, buf, 4)) {
		DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Invalid portal type\n",
				  __func__));
		goto exit_ddb_add;
	}

	max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
				     MAX_DEV_DB_ENTRIES;

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Unable to allocate dma buffer\n",
				  __func__));
		goto exit_ddb_add;
	}

	dev = iscsi_find_flashnode_sess(ha->host, NULL,
					qla4xxx_sysfs_ddb_is_non_persistent);
	if (dev) {
		ql4_printk(KERN_ERR, ha,
			   "%s: A non-persistent entry %s found\n",
			   __func__, dev->kobj.name);
		put_device(dev);
		goto exit_ddb_add;
	}

	/* Index 0 and 1 are reserved for boot target entries */
	for (idx = 2; idx < max_ddbs; idx++) {
		if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry,
					     fw_ddb_entry_dma, idx))
			break;
	}

	if (idx == max_ddbs)
		goto exit_ddb_add;

	if (!strncasecmp("ipv6", buf, 4))
		options |= IPV6_DEFAULT_DDB_ENTRY;

	rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
	if (rval == QLA_ERROR)
		goto exit_ddb_add;

	rval = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 1);

exit_ddb_add:
	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
	if (rval == QLA_SUCCESS)
		return idx;
	else
		return -EIO;
}

/**
 * qla4xxx_sysfs_ddb_apply - write the target ddb contents to Flash
 * @fnode_sess: pointer to session attrs of flash ddb entry
 * @fnode_conn: pointer to connection attrs of flash ddb entry
 *
 * This writes the contents of target ddb buffer to Flash with a valid cookie
 * value in order to make the ddb entry persistent.
 **/
static int  qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
				    struct iscsi_bus_flash_conn *fnode_conn)
{
	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
	struct scsi_qla_host *ha = to_qla_host(shost);
	uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	uint32_t options = 0;
	int rval = 0;

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Unable to allocate dma buffer\n",
				  __func__));
		rval = -ENOMEM;
		goto exit_ddb_apply;
	}

	if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
		options |= IPV6_DEFAULT_DDB_ENTRY;

	rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
	if (rval == QLA_ERROR)
		goto exit_ddb_apply;

	dev_db_start_offset += (fnode_sess->target_id *
				sizeof(*fw_ddb_entry));

	qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
	fw_ddb_entry->cookie = DDB_VALID_COOKIE;

	rval = qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
				 sizeof(*fw_ddb_entry), FLASH_OPT_RMW_COMMIT);

	if (rval == QLA_SUCCESS) {
		fnode_sess->flash_state = DEV_DB_PERSISTENT;
		ql4_printk(KERN_INFO, ha,
			   "%s: flash node %u of host %lu written to flash\n",
			   __func__, fnode_sess->target_id, ha->host_no);
	} else {
		rval = -EIO;
		ql4_printk(KERN_ERR, ha,
			   "%s: Error while writing flash node %u of host %lu to flash\n",
			   __func__, fnode_sess->target_id, ha->host_no);
	}

exit_ddb_apply:
	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
	return rval;
}

static ssize_t qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host *ha,
					   struct dev_db_entry *fw_ddb_entry,
					   uint16_t idx)
{
	struct dev_db_entry *ddb_entry = NULL;
	dma_addr_t ddb_entry_dma;
	unsigned long wtime;
	uint32_t mbx_sts = 0;
	uint32_t state = 0, conn_err = 0;
	uint16_t tmo = 0;
	int ret = 0;

	ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
				       &ddb_entry_dma, GFP_KERNEL);
	if (!ddb_entry) {
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Unable to allocate dma buffer\n",
				  __func__));
		return QLA_ERROR;
	}

	memcpy(ddb_entry, fw_ddb_entry, sizeof(*ddb_entry));

	ret = qla4xxx_set_ddb_entry(ha, idx, ddb_entry_dma, &mbx_sts);
	if (ret != QLA_SUCCESS) {
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Unable to set ddb entry for index %d\n",
				  __func__, idx));
		goto exit_ddb_conn_open;
	}

	qla4xxx_conn_open(ha, idx);

	/* To ensure that sendtargets is done, wait for at least 12 secs */
	tmo = ((ha->def_timeout > LOGIN_TOV) &&
	       (ha->def_timeout < LOGIN_TOV * 10) ?
	       ha->def_timeout : LOGIN_TOV);

	DEBUG2(ql4_printk(KERN_INFO, ha,
			  "Default time to wait for login to ddb %d\n", tmo));

	wtime = jiffies + (HZ * tmo);
	do {
		ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
					      NULL, &state, &conn_err, NULL,
					      NULL);
		if (ret == QLA_ERROR)
			continue;

		if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
		    state == DDB_DS_SESSION_FAILED)
			break;

		schedule_timeout_uninterruptible(HZ / 10);
	} while (time_after(wtime, jiffies));

exit_ddb_conn_open:
	if (ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
				  ddb_entry, ddb_entry_dma);
	return ret;
}

static int qla4xxx_ddb_login_st(struct scsi_qla_host *ha,
				struct dev_db_entry *fw_ddb_entry,
				uint16_t target_id)
{
	struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
	struct list_head list_nt;
	uint16_t ddb_index;
	int ret = 0;

	if (test_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags)) {
		ql4_printk(KERN_WARNING, ha,
			   "%s: A discovery already in progress!\n", __func__);
		return QLA_ERROR;
	}

	INIT_LIST_HEAD(&list_nt);

	set_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);

	ret = qla4xxx_get_ddb_index(ha, &ddb_index);
	if (ret == QLA_ERROR)
		goto exit_login_st_clr_bit;

	ret = qla4xxx_sysfs_ddb_conn_open(ha, fw_ddb_entry, ddb_index);
	if (ret == QLA_ERROR)
		goto exit_login_st;

	qla4xxx_build_new_nt_list(ha, &list_nt, target_id);

	list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, &list_nt, list) {
		list_del_init(&ddb_idx->list);
		qla4xxx_clear_ddb_entry(ha, ddb_idx->fw_ddb_idx);
		vfree(ddb_idx);
	}

exit_login_st:
	if (qla4xxx_clear_ddb_entry(ha, ddb_index) == QLA_ERROR) {
		ql4_printk(KERN_ERR, ha,
			   "Unable to clear DDB index = 0x%x\n", ddb_index);
	}

	clear_bit(ddb_index, ha->ddb_idx_map);

exit_login_st_clr_bit:
	clear_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
	return ret;
}

static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
				struct dev_db_entry *fw_ddb_entry,
				uint16_t idx)
{
	int ret = QLA_ERROR;

	ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
	if (ret != QLA_SUCCESS)
		ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
					      idx);
	else
		ret = -EPERM;

	return ret;
}

/**
 * qla4xxx_sysfs_ddb_login - Login to the specified target
 * @fnode_sess: pointer to session attrs of flash ddb entry
 * @fnode_conn: pointer to connection attrs of flash ddb entry
 *
 * This logs in to the specified target
 **/
static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
				   struct iscsi_bus_flash_conn *fnode_conn)
{
	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	uint32_t options = 0;
	int ret = 0;

	if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Target info is not persistent\n", __func__);
		ret = -EIO;
		goto exit_ddb_login;
	}

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Unable to allocate dma buffer\n",
				  __func__));
		ret = -ENOMEM;
		goto exit_ddb_login;
	}

	if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
		options |= IPV6_DEFAULT_DDB_ENTRY;

	ret = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
	if (ret == QLA_ERROR)
		goto exit_ddb_login;

	qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
	fw_ddb_entry->cookie = DDB_VALID_COOKIE;

	if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
		ret = qla4xxx_ddb_login_st(ha, fw_ddb_entry,
					   fnode_sess->target_id);
	else
		ret = qla4xxx_ddb_login_nt(ha, fw_ddb_entry,
					   fnode_sess->target_id);

	if (ret > 0)
		ret = -EIO;

exit_ddb_login:
	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
	return ret;
}

/**
 * qla4xxx_sysfs_ddb_logout_sid - Logout session for the specified target
 * @cls_sess: pointer to session to be logged out
 *
 * This performs session log out from the specified target
 **/
static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
{
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry = NULL;
	struct scsi_qla_host *ha;
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	unsigned long flags;
	unsigned long wtime;
	uint32_t ddb_state;
	int options;
	int ret = 0;

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;

	if (ddb_entry->ddb_type != FLASH_DDB) {
		ql4_printk(KERN_ERR, ha, "%s: Not a flash node session\n",
			   __func__);
		ret = -ENXIO;
		goto exit_ddb_logout;
	}

	if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Logout from boot target entry is not permitted.\n",
			   __func__);
		ret = -EPERM;
		goto exit_ddb_logout;
	}

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to allocate dma buffer\n", __func__);
		ret = -ENOMEM;
		goto exit_ddb_logout;
	}

	if (test_and_set_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
		goto ddb_logout_init;

	ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
				      fw_ddb_entry, fw_ddb_entry_dma,
				      NULL, NULL, &ddb_state, NULL,
				      NULL, NULL);
	if (ret == QLA_ERROR)
		goto ddb_logout_init;

	if (ddb_state == DDB_DS_SESSION_ACTIVE)
		goto ddb_logout_init;

	/* wait until next relogin is triggered using DF_RELOGIN and
	 * clear DF_RELOGIN to avoid invocation of further relogin
	 */
	wtime = jiffies + (HZ * RELOGIN_TOV);
	do {
		if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags))
			goto ddb_logout_init;

		schedule_timeout_uninterruptible(HZ);
	} while ((time_after(wtime, jiffies)));

ddb_logout_init:
	atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
	atomic_set(&ddb_entry->relogin_timer, 0);

	options = LOGOUT_OPTION_CLOSE_SESSION;
	qla4xxx_session_logout_ddb(ha, ddb_entry, options);

	memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
	wtime = jiffies + (HZ * LOGOUT_TOV);
	do {
		ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
					      fw_ddb_entry, fw_ddb_entry_dma,
					      NULL, NULL, &ddb_state, NULL,
					      NULL, NULL);
		if (ret == QLA_ERROR)
			goto ddb_logout_clr_sess;

		if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
		    (ddb_state == DDB_DS_SESSION_FAILED))
			goto ddb_logout_clr_sess;

		schedule_timeout_uninterruptible(HZ);
	} while ((time_after(wtime, jiffies)));

ddb_logout_clr_sess:
	qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
	/*
	 * we have decremented the reference count of the driver
	 * when we setup the session to have the driver unload
	 * to be seamless without actually destroying the
	 * session
	 **/
	try_module_get(qla4xxx_iscsi_transport.owner);
	iscsi_destroy_endpoint(ddb_entry->conn->ep);

	spin_lock_irqsave(&ha->hardware_lock, flags);
	qla4xxx_free_ddb(ha, ddb_entry);
	clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
	spin_unlock_irqrestore(&ha->hardware_lock, flags);

	iscsi_session_teardown(ddb_entry->sess);

	clear_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags);
	ret = QLA_SUCCESS;

exit_ddb_logout:
	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
	return ret;
}

/**
 * qla4xxx_sysfs_ddb_logout - Logout from the specified target
 * @fnode_sess: pointer to session attrs of flash ddb entry
 * @fnode_conn: pointer to connection attrs of flash ddb entry
 *
 * This performs log out from the specified target
 **/
static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
				    struct iscsi_bus_flash_conn *fnode_conn)
{
	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct ql4_tuple_ddb *flash_tddb = NULL;
	struct ql4_tuple_ddb *tmp_tddb = NULL;
	struct dev_db_entry *fw_ddb_entry = NULL;
	struct ddb_entry *ddb_entry = NULL;
	dma_addr_t fw_ddb_dma;
	uint32_t next_idx = 0;
	uint32_t state = 0, conn_err = 0;
	uint16_t conn_id = 0;
	int idx, index;
	int status, ret = 0;

	fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
				      &fw_ddb_dma);
	if (fw_ddb_entry == NULL) {
		ql4_printk(KERN_ERR, ha, "%s:Out of memory\n", __func__);
		ret = -ENOMEM;
		goto exit_ddb_logout;
	}

	flash_tddb = vzalloc(sizeof(*flash_tddb));
	if (!flash_tddb) {
		ql4_printk(KERN_WARNING, ha,
			   "%s:Memory Allocation failed.\n", __func__);
		ret = -ENOMEM;
		goto exit_ddb_logout;
	}

	tmp_tddb = vzalloc(sizeof(*tmp_tddb));
	if (!tmp_tddb) {
		ql4_printk(KERN_WARNING, ha,
			   "%s:Memory Allocation failed.\n", __func__);
		ret = -ENOMEM;
		goto exit_ddb_logout;
	}

	if (!fnode_sess->targetname) {
		ql4_printk(KERN_ERR, ha,
			   "%s:Cannot logout from SendTarget entry\n",
			   __func__);
		ret = -EPERM;
		goto exit_ddb_logout;
	}

	if (fnode_sess->is_boot_target) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Logout from boot target entry is not permitted.\n",
			   __func__);
		ret = -EPERM;
		goto exit_ddb_logout;
	}

	strlcpy(flash_tddb->iscsi_name, fnode_sess->targetname,
		ISCSI_NAME_SIZE);

	if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
		sprintf(flash_tddb->ip_addr, "%pI6", fnode_conn->ipaddress);
	else
		sprintf(flash_tddb->ip_addr, "%pI4", fnode_conn->ipaddress);

	flash_tddb->tpgt = fnode_sess->tpgt;
	flash_tddb->port = fnode_conn->port;

	COPY_ISID(flash_tddb->isid, fnode_sess->isid);

	for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
		ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
		if (ddb_entry == NULL)
			continue;

		if (ddb_entry->ddb_type != FLASH_DDB)
			continue;

		index = ddb_entry->sess->target_id;
		status = qla4xxx_get_fwddb_entry(ha, index, fw_ddb_entry,
						 fw_ddb_dma, NULL, &next_idx,
						 &state, &conn_err, NULL,
						 &conn_id);
		if (status == QLA_ERROR) {
			ret = -ENOMEM;
			break;
		}

		qla4xxx_convert_param_ddb(fw_ddb_entry, tmp_tddb, NULL);

		status = qla4xxx_compare_tuple_ddb(ha, flash_tddb, tmp_tddb,
						   true);
		if (status == QLA_SUCCESS) {
			ret = qla4xxx_sysfs_ddb_logout_sid(ddb_entry->sess);
			break;
		}
	}

	if (idx == MAX_DDB_ENTRIES)
		ret = -ESRCH;

exit_ddb_logout:
	if (flash_tddb)
		vfree(flash_tddb);
	if (tmp_tddb)
		vfree(tmp_tddb);
	if (fw_ddb_entry)
		dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);

	return ret;
}

static int
qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
			    int param, char *buf)
{
	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct iscsi_bus_flash_conn *fnode_conn;
	struct ql4_chap_table chap_tbl;
	struct device *dev;
	int parent_type;
	int rc = 0;

	dev = iscsi_find_flashnode_conn(fnode_sess);
	if (!dev)
		return -EIO;

	fnode_conn = iscsi_dev_to_flash_conn(dev);

	switch (param) {
	case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
		rc = sprintf(buf, "%u\n", fnode_conn->is_fw_assigned_ipv6);
		break;
	case ISCSI_FLASHNODE_PORTAL_TYPE:
		rc = sprintf(buf, "%s\n", fnode_sess->portal_type);
		break;
	case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
		rc = sprintf(buf, "%u\n", fnode_sess->auto_snd_tgt_disable);
		break;
	case ISCSI_FLASHNODE_DISCOVERY_SESS:
		rc = sprintf(buf, "%u\n", fnode_sess->discovery_sess);
		break;
	case ISCSI_FLASHNODE_ENTRY_EN:
		rc = sprintf(buf, "%u\n", fnode_sess->entry_state);
		break;
	case ISCSI_FLASHNODE_HDR_DGST_EN:
		rc = sprintf(buf, "%u\n", fnode_conn->hdrdgst_en);
		break;
	case ISCSI_FLASHNODE_DATA_DGST_EN:
		rc = sprintf(buf, "%u\n", fnode_conn->datadgst_en);
		break;
	case ISCSI_FLASHNODE_IMM_DATA_EN:
		rc = sprintf(buf, "%u\n", fnode_sess->imm_data_en);
		break;
	case ISCSI_FLASHNODE_INITIAL_R2T_EN:
		rc = sprintf(buf, "%u\n", fnode_sess->initial_r2t_en);
		break;
	case ISCSI_FLASHNODE_DATASEQ_INORDER:
		rc = sprintf(buf, "%u\n", fnode_sess->dataseq_inorder_en);
		break;
	case ISCSI_FLASHNODE_PDU_INORDER:
		rc = sprintf(buf, "%u\n", fnode_sess->pdu_inorder_en);
		break;
	case ISCSI_FLASHNODE_CHAP_AUTH_EN:
		rc = sprintf(buf, "%u\n", fnode_sess->chap_auth_en);
		break;
	case ISCSI_FLASHNODE_SNACK_REQ_EN:
		rc = sprintf(buf, "%u\n", fnode_conn->snack_req_en);
		break;
	case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
		rc = sprintf(buf, "%u\n", fnode_sess->discovery_logout_en);
		break;
	case ISCSI_FLASHNODE_BIDI_CHAP_EN:
		rc = sprintf(buf, "%u\n", fnode_sess->bidi_chap_en);
		break;
	case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
		rc = sprintf(buf, "%u\n", fnode_sess->discovery_auth_optional);
		break;
	case ISCSI_FLASHNODE_ERL:
		rc = sprintf(buf, "%u\n", fnode_sess->erl);
		break;
	case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
		rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_stat);
		break;
	case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
		rc = sprintf(buf, "%u\n", fnode_conn->tcp_nagle_disable);
		break;
	case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
		rc = sprintf(buf, "%u\n", fnode_conn->tcp_wsf_disable);
		break;
	case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
		rc = sprintf(buf, "%u\n", fnode_conn->tcp_timer_scale);
		break;
	case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
		rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_en);
		break;
	case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
		rc = sprintf(buf, "%u\n", fnode_conn->fragment_disable);
		break;
	case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
		rc = sprintf(buf, "%u\n", fnode_conn->max_recv_dlength);
		break;
	case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
		rc = sprintf(buf, "%u\n", fnode_conn->max_xmit_dlength);
		break;
	case ISCSI_FLASHNODE_FIRST_BURST:
		rc = sprintf(buf, "%u\n", fnode_sess->first_burst);
		break;
	case ISCSI_FLASHNODE_DEF_TIME2WAIT:
		rc = sprintf(buf, "%u\n", fnode_sess->time2wait);
		break;
	case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
		rc = sprintf(buf, "%u\n", fnode_sess->time2retain);
		break;
	case ISCSI_FLASHNODE_MAX_R2T:
		rc = sprintf(buf, "%u\n", fnode_sess->max_r2t);
		break;
	case ISCSI_FLASHNODE_KEEPALIVE_TMO:
		rc = sprintf(buf, "%u\n", fnode_conn->keepalive_timeout);
		break;
	case ISCSI_FLASHNODE_ISID:
		rc = sprintf(buf, "%pm\n", fnode_sess->isid);
		break;
	case ISCSI_FLASHNODE_TSID:
		rc = sprintf(buf, "%u\n", fnode_sess->tsid);
		break;
	case ISCSI_FLASHNODE_PORT:
		rc = sprintf(buf, "%d\n", fnode_conn->port);
		break;
	case ISCSI_FLASHNODE_MAX_BURST:
		rc = sprintf(buf, "%u\n", fnode_sess->max_burst);
		break;
	case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
		rc = sprintf(buf, "%u\n",
			     fnode_sess->default_taskmgmt_timeout);
		break;
	case ISCSI_FLASHNODE_IPADDR:
		if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
			rc = sprintf(buf, "%pI6\n", fnode_conn->ipaddress);
		else
			rc = sprintf(buf, "%pI4\n", fnode_conn->ipaddress);
		break;
	case ISCSI_FLASHNODE_ALIAS:
		if (fnode_sess->targetalias)
			rc = sprintf(buf, "%s\n", fnode_sess->targetalias);
		else
			rc = sprintf(buf, "\n");
		break;
	case ISCSI_FLASHNODE_REDIRECT_IPADDR:
		if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
			rc = sprintf(buf, "%pI6\n",
				     fnode_conn->redirect_ipaddr);
		else
			rc = sprintf(buf, "%pI4\n",
				     fnode_conn->redirect_ipaddr);
		break;
	case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
		rc = sprintf(buf, "%u\n", fnode_conn->max_segment_size);
		break;
	case ISCSI_FLASHNODE_LOCAL_PORT:
		rc = sprintf(buf, "%u\n", fnode_conn->local_port);
		break;
	case ISCSI_FLASHNODE_IPV4_TOS:
		rc = sprintf(buf, "%u\n", fnode_conn->ipv4_tos);
		break;
	case ISCSI_FLASHNODE_IPV6_TC:
		if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
			rc = sprintf(buf, "%u\n",
				     fnode_conn->ipv6_traffic_class);
		else
			rc = sprintf(buf, "\n");
		break;
	case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
		rc = sprintf(buf, "%u\n", fnode_conn->ipv6_flow_label);
		break;
	case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
		if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
			rc = sprintf(buf, "%pI6\n",
				     fnode_conn->link_local_ipv6_addr);
		else
			rc = sprintf(buf, "\n");
		break;
	case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
		rc = sprintf(buf, "%u\n", fnode_sess->discovery_parent_idx);
		break;
	case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
		if (fnode_sess->discovery_parent_type == DDB_ISNS)
			parent_type = ISCSI_DISC_PARENT_ISNS;
		else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
			parent_type = ISCSI_DISC_PARENT_UNKNOWN;
		else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
			parent_type = ISCSI_DISC_PARENT_SENDTGT;
		else
			parent_type = ISCSI_DISC_PARENT_UNKNOWN;

		rc = sprintf(buf, "%s\n",
			     iscsi_get_discovery_parent_name(parent_type));
		break;
	case ISCSI_FLASHNODE_NAME:
		if (fnode_sess->targetname)
			rc = sprintf(buf, "%s\n", fnode_sess->targetname);
		else
			rc = sprintf(buf, "\n");
		break;
	case ISCSI_FLASHNODE_TPGT:
		rc = sprintf(buf, "%u\n", fnode_sess->tpgt);
		break;
	case ISCSI_FLASHNODE_TCP_XMIT_WSF:
		rc = sprintf(buf, "%u\n", fnode_conn->tcp_xmit_wsf);
		break;
	case ISCSI_FLASHNODE_TCP_RECV_WSF:
		rc = sprintf(buf, "%u\n", fnode_conn->tcp_recv_wsf);
		break;
	case ISCSI_FLASHNODE_CHAP_OUT_IDX:
		rc = sprintf(buf, "%u\n", fnode_sess->chap_out_idx);
		break;
	case ISCSI_FLASHNODE_USERNAME:
		if (fnode_sess->chap_auth_en) {
			qla4xxx_get_uni_chap_at_index(ha,
						      chap_tbl.name,
						      chap_tbl.secret,
						      fnode_sess->chap_out_idx);
			rc = sprintf(buf, "%s\n", chap_tbl.name);
		} else {
			rc = sprintf(buf, "\n");
		}
		break;
	case ISCSI_FLASHNODE_PASSWORD:
		if (fnode_sess->chap_auth_en) {
			qla4xxx_get_uni_chap_at_index(ha,
						      chap_tbl.name,
						      chap_tbl.secret,
						      fnode_sess->chap_out_idx);
			rc = sprintf(buf, "%s\n", chap_tbl.secret);
		} else {
			rc = sprintf(buf, "\n");
		}
		break;
	case ISCSI_FLASHNODE_STATSN:
		rc = sprintf(buf, "%u\n", fnode_conn->statsn);
		break;
	case ISCSI_FLASHNODE_EXP_STATSN:
		rc = sprintf(buf, "%u\n", fnode_conn->exp_statsn);
		break;
	case ISCSI_FLASHNODE_IS_BOOT_TGT:
		rc = sprintf(buf, "%u\n", fnode_sess->is_boot_target);
		break;
	default:
		rc = -ENOSYS;
		break;
	}

	put_device(dev);
	return rc;
}

/**
 * qla4xxx_sysfs_ddb_set_param - Set parameter for firmware DDB entry
 * @fnode_sess: pointer to session attrs of flash ddb entry
 * @fnode_conn: pointer to connection attrs of flash ddb entry
 * @data: Parameters and their values to update
 * @len: len of data
 *
 * This sets the parameter of flash ddb entry and writes them to flash
 **/
static int
qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
			    struct iscsi_bus_flash_conn *fnode_conn,
			    void *data, int len)
{
	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct iscsi_flashnode_param_info *fnode_param;
	struct ql4_chap_table chap_tbl;
	struct nlattr *attr;
	uint16_t chap_out_idx = INVALID_ENTRY;
	int rc = QLA_ERROR;
	uint32_t rem = len;

	memset((void *)&chap_tbl, 0, sizeof(chap_tbl));
	nla_for_each_attr(attr, data, len, rem) {
		fnode_param = nla_data(attr);

		switch (fnode_param->param) {
		case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
			fnode_conn->is_fw_assigned_ipv6 = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_PORTAL_TYPE:
			memcpy(fnode_sess->portal_type, fnode_param->value,
			       strlen(fnode_sess->portal_type));
			break;
		case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
			fnode_sess->auto_snd_tgt_disable =
							fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_DISCOVERY_SESS:
			fnode_sess->discovery_sess = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_ENTRY_EN:
			fnode_sess->entry_state = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_HDR_DGST_EN:
			fnode_conn->hdrdgst_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_DATA_DGST_EN:
			fnode_conn->datadgst_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_IMM_DATA_EN:
			fnode_sess->imm_data_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_INITIAL_R2T_EN:
			fnode_sess->initial_r2t_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_DATASEQ_INORDER:
			fnode_sess->dataseq_inorder_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_PDU_INORDER:
			fnode_sess->pdu_inorder_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_CHAP_AUTH_EN:
			fnode_sess->chap_auth_en = fnode_param->value[0];
			/* Invalidate chap index if chap auth is disabled */
			if (!fnode_sess->chap_auth_en)
				fnode_sess->chap_out_idx = INVALID_ENTRY;

			break;
		case ISCSI_FLASHNODE_SNACK_REQ_EN:
			fnode_conn->snack_req_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
			fnode_sess->discovery_logout_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_BIDI_CHAP_EN:
			fnode_sess->bidi_chap_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
			fnode_sess->discovery_auth_optional =
							fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_ERL:
			fnode_sess->erl = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
			fnode_conn->tcp_timestamp_stat = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
			fnode_conn->tcp_nagle_disable = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
			fnode_conn->tcp_wsf_disable = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
			fnode_conn->tcp_timer_scale = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
			fnode_conn->tcp_timestamp_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
			fnode_conn->fragment_disable = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
			fnode_conn->max_recv_dlength =
					*(unsigned *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
			fnode_conn->max_xmit_dlength =
					*(unsigned *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_FIRST_BURST:
			fnode_sess->first_burst =
					*(unsigned *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_DEF_TIME2WAIT:
			fnode_sess->time2wait = *(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
			fnode_sess->time2retain =
						*(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_MAX_R2T:
			fnode_sess->max_r2t =
					*(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_KEEPALIVE_TMO:
			fnode_conn->keepalive_timeout =
				*(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_ISID:
			memcpy(fnode_sess->isid, fnode_param->value,
			       sizeof(fnode_sess->isid));
			break;
		case ISCSI_FLASHNODE_TSID:
			fnode_sess->tsid = *(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_PORT:
			fnode_conn->port = *(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_MAX_BURST:
			fnode_sess->max_burst = *(unsigned *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
			fnode_sess->default_taskmgmt_timeout =
						*(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_IPADDR:
			memcpy(fnode_conn->ipaddress, fnode_param->value,
			       IPv6_ADDR_LEN);
			break;
		case ISCSI_FLASHNODE_ALIAS:
			rc = iscsi_switch_str_param(&fnode_sess->targetalias,
						    (char *)fnode_param->value);
			break;
		case ISCSI_FLASHNODE_REDIRECT_IPADDR:
			memcpy(fnode_conn->redirect_ipaddr, fnode_param->value,
			       IPv6_ADDR_LEN);
			break;
		case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
			fnode_conn->max_segment_size =
					*(unsigned *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_LOCAL_PORT:
			fnode_conn->local_port =
						*(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_IPV4_TOS:
			fnode_conn->ipv4_tos = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_IPV6_TC:
			fnode_conn->ipv6_traffic_class = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
			fnode_conn->ipv6_flow_label = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_NAME:
			rc = iscsi_switch_str_param(&fnode_sess->targetname,
						    (char *)fnode_param->value);
			break;
		case ISCSI_FLASHNODE_TPGT:
			fnode_sess->tpgt = *(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
			memcpy(fnode_conn->link_local_ipv6_addr,
			       fnode_param->value, IPv6_ADDR_LEN);
			break;
		case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
			fnode_sess->discovery_parent_idx =
						*(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_TCP_XMIT_WSF:
			fnode_conn->tcp_xmit_wsf =
						*(uint8_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_TCP_RECV_WSF:
			fnode_conn->tcp_recv_wsf =
						*(uint8_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_STATSN:
			fnode_conn->statsn = *(uint32_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_EXP_STATSN:
			fnode_conn->exp_statsn =
						*(uint32_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_CHAP_OUT_IDX:
			chap_out_idx = *(uint16_t *)fnode_param->value;
			if (!qla4xxx_get_uni_chap_at_index(ha,
							   chap_tbl.name,
							   chap_tbl.secret,
							   chap_out_idx)) {
				fnode_sess->chap_out_idx = chap_out_idx;
				/* Enable chap auth if chap index is valid */
				fnode_sess->chap_auth_en = QL4_PARAM_ENABLE;
			}
			break;
		default:
			ql4_printk(KERN_ERR, ha,
				   "%s: No such sysfs attribute\n", __func__);
			rc = -ENOSYS;
			goto exit_set_param;
		}
	}

	rc = qla4xxx_sysfs_ddb_apply(fnode_sess, fnode_conn);

exit_set_param:
	return rc;
}

/**
 * qla4xxx_sysfs_ddb_delete - Delete firmware DDB entry
 * @fnode_sess: pointer to session attrs of flash ddb entry
 *
 * This invalidates the flash ddb entry at the given index
 **/
static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
{
	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
	struct scsi_qla_host *ha = to_qla_host(shost);
	uint32_t dev_db_start_offset;
	uint32_t dev_db_end_offset;
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	uint16_t *ddb_cookie = NULL;
	size_t ddb_size = 0;
	void *pddb = NULL;
	int target_id;
	int rc = 0;

	if (fnode_sess->is_boot_target) {
		rc = -EPERM;
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Deletion of boot target entry is not permitted.\n",
				  __func__));
		goto exit_ddb_del;
	}

	if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT)
		goto sysfs_ddb_del;

	if (is_qla40XX(ha)) {
		dev_db_start_offset = FLASH_OFFSET_DB_INFO;
		dev_db_end_offset = FLASH_OFFSET_DB_END;
		dev_db_start_offset += (fnode_sess->target_id *
				       sizeof(*fw_ddb_entry));
		ddb_size = sizeof(*fw_ddb_entry);
	} else {
		dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
				      (ha->hw.flt_region_ddb << 2);
		/* flt_ddb_size is DDB table size for both ports
		 * so divide it by 2 to calculate the offset for second port
		 */
		if (ha->port_num == 1)
			dev_db_start_offset += (ha->hw.flt_ddb_size / 2);

		dev_db_end_offset = dev_db_start_offset +
				    (ha->hw.flt_ddb_size / 2);

		dev_db_start_offset += (fnode_sess->target_id *
				       sizeof(*fw_ddb_entry));
		dev_db_start_offset += offsetof(struct dev_db_entry, cookie);

		ddb_size = sizeof(*ddb_cookie);
	}

	DEBUG2(ql4_printk(KERN_ERR, ha, "%s: start offset=%u, end offset=%u\n",
			  __func__, dev_db_start_offset, dev_db_end_offset));

	if (dev_db_start_offset > dev_db_end_offset) {
		rc = -EIO;
		DEBUG2(ql4_printk(KERN_ERR, ha, "%s:Invalid DDB index %u\n",
				  __func__, fnode_sess->target_id));
		goto exit_ddb_del;
	}

	pddb = dma_alloc_coherent(&ha->pdev->dev, ddb_size,
				  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!pddb) {
		rc = -ENOMEM;
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Unable to allocate dma buffer\n",
				  __func__));
		goto exit_ddb_del;
	}

	if (is_qla40XX(ha)) {
		fw_ddb_entry = pddb;
		memset(fw_ddb_entry, 0, ddb_size);
		ddb_cookie = &fw_ddb_entry->cookie;
	} else {
		ddb_cookie = pddb;
	}

	/* invalidate the cookie */
	*ddb_cookie = 0xFFEE;
	qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
			  ddb_size, FLASH_OPT_RMW_COMMIT);

sysfs_ddb_del:
	target_id = fnode_sess->target_id;
	iscsi_destroy_flashnode_sess(fnode_sess);
	ql4_printk(KERN_INFO, ha,
		   "%s: session and conn entries for flashnode %u of host %lu deleted\n",
		   __func__, target_id, ha->host_no);
exit_ddb_del:
	if (pddb)
		dma_free_coherent(&ha->pdev->dev, ddb_size, pddb,
				  fw_ddb_entry_dma);
	return rc;
}

/**
 * qla4xxx_sysfs_ddb_export - Create sysfs entries for firmware DDBs
 * @ha: pointer to adapter structure
 *
 * Export the firmware DDB for all send targets and normal targets to sysfs.
 **/
int qla4xxx_sysfs_ddb_export(struct scsi_qla_host *ha)
{
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	uint16_t max_ddbs;
	uint16_t idx = 0;
	int ret = QLA_SUCCESS;

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
					  sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Unable to allocate dma buffer\n",
				  __func__));
		return -ENOMEM;
	}

	max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
				     MAX_DEV_DB_ENTRIES;

	for (idx = 0; idx < max_ddbs; idx++) {
		if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry, fw_ddb_entry_dma,
					     idx))
			continue;

		ret = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 0);
		if (ret) {
			ret = -EIO;
			break;
		}
	}

	dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
			  fw_ddb_entry_dma);

	return ret;
}

static void qla4xxx_sysfs_ddb_remove(struct scsi_qla_host *ha)
{
	iscsi_destroy_all_flashnode(ha->host);
}

/**
 * qla4xxx_build_ddb_list - Build ddb list and setup sessions
 * @ha: pointer to adapter structure
 * @is_reset: Is this init path or reset path
 *
 * Create a list of sendtargets (st) from firmware DDBs, issue send targets
 * using connection open, then create the list of normal targets (nt)
 * from firmware DDBs. Based on the list of nt setup session and connection
 * objects.
 **/
void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
{
	uint16_t tmo = 0;
	struct list_head list_st, list_nt;
	struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
	unsigned long wtime;

	if (!test_bit(AF_LINK_UP, &ha->flags)) {
		set_bit(AF_BUILD_DDB_LIST, &ha->flags);
		ha->is_reset = is_reset;
		return;
	}

	INIT_LIST_HEAD(&list_st);
	INIT_LIST_HEAD(&list_nt);

	qla4xxx_build_st_list(ha, &list_st);

	/* Before issuing conn open mbox, ensure all IPs states are configured
	 * Note, conn open fails if IPs are not configured
	 */
	qla4xxx_wait_for_ip_configuration(ha);

	/* Go thru the STs and fire the sendtargets by issuing conn open mbx */
	list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
		qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
	}

	/* Wait to ensure all sendtargets are done for min 12 sec wait */
	tmo = ((ha->def_timeout > LOGIN_TOV) &&
	       (ha->def_timeout < LOGIN_TOV * 10) ?
	       ha->def_timeout : LOGIN_TOV);

	DEBUG2(ql4_printk(KERN_INFO, ha,
			  "Default time to wait for build ddb %d\n", tmo));

	wtime = jiffies + (HZ * tmo);
	do {
		if (list_empty(&list_st))
			break;

		qla4xxx_remove_failed_ddb(ha, &list_st);
		schedule_timeout_uninterruptible(HZ / 10);
	} while (time_after(wtime, jiffies));


	qla4xxx_build_nt_list(ha, &list_nt, &list_st, is_reset);

	qla4xxx_free_ddb_list(&list_st);
	qla4xxx_free_ddb_list(&list_nt);

	qla4xxx_free_ddb_index(ha);
}

/**
 * qla4xxx_wait_login_resp_boot_tgt -  Wait for iSCSI boot target login
 * response.
 * @ha: pointer to adapter structure
 *
 * When the boot entry is normal iSCSI target then DF_BOOT_TGT flag will be
 * set in DDB and we will wait for login response of boot targets during
 * probe.
 **/
static void qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host *ha)
{
	struct ddb_entry *ddb_entry;
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	unsigned long wtime;
	uint32_t ddb_state;
	int max_ddbs, idx, ret;

	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
				     MAX_DEV_DB_ENTRIES;

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to allocate dma buffer\n", __func__);
		goto exit_login_resp;
	}

	wtime = jiffies + (HZ * BOOT_LOGIN_RESP_TOV);

	for (idx = 0; idx < max_ddbs; idx++) {
		ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
		if (ddb_entry == NULL)
			continue;

		if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
			DEBUG2(ql4_printk(KERN_INFO, ha,
					  "%s: DDB index [%d]\n", __func__,
					  ddb_entry->fw_ddb_index));
			do {
				ret = qla4xxx_get_fwddb_entry(ha,
						ddb_entry->fw_ddb_index,
						fw_ddb_entry, fw_ddb_entry_dma,
						NULL, NULL, &ddb_state, NULL,
						NULL, NULL);
				if (ret == QLA_ERROR)
					goto exit_login_resp;

				if ((ddb_state == DDB_DS_SESSION_ACTIVE) ||
				    (ddb_state == DDB_DS_SESSION_FAILED))
					break;

				schedule_timeout_uninterruptible(HZ);

			} while ((time_after(wtime, jiffies)));

			if (!time_after(wtime, jiffies)) {
				DEBUG2(ql4_printk(KERN_INFO, ha,
						  "%s: Login response wait timer expired\n",
						  __func__));
				 goto exit_login_resp;
			}
		}
	}

exit_login_resp:
	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
}

/**
 * qla4xxx_probe_adapter - callback function to probe HBA
 * @pdev: pointer to pci_dev structure
 * @pci_device_id: pointer to pci_device entry
 *
 * This routine will probe for Qlogic 4xxx iSCSI host adapters.
 * It returns zero if successful. It also initializes all data necessary for
 * the driver.
 **/
static int qla4xxx_probe_adapter(struct pci_dev *pdev,
				 const struct pci_device_id *ent)
{
	int ret = -ENODEV, status;
	struct Scsi_Host *host;
	struct scsi_qla_host *ha;
	uint8_t init_retry_count = 0;
	char buf[34];
	struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
	uint32_t dev_state;

	if (pci_enable_device(pdev))
		return -1;

	host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
	if (host == NULL) {
		printk(KERN_WARNING
		       "qla4xxx: Couldn't allocate host from scsi layer!\n");
		goto probe_disable_device;
	}

	/* Clear our data area */
	ha = to_qla_host(host);
	memset(ha, 0, sizeof(*ha));

	/* Save the information from PCI BIOS.	*/
	ha->pdev = pdev;
	ha->host = host;
	ha->host_no = host->host_no;
	ha->func_num = PCI_FUNC(ha->pdev->devfn);

	pci_enable_pcie_error_reporting(pdev);

	/* Setup Runtime configurable options */
	if (is_qla8022(ha)) {
		ha->isp_ops = &qla4_82xx_isp_ops;
		ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
		ha->qdr_sn_window = -1;
		ha->ddr_mn_window = -1;
		ha->curr_window = 255;
		nx_legacy_intr = &legacy_intr[ha->func_num];
		ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
		ha->nx_legacy_intr.tgt_status_reg =
			nx_legacy_intr->tgt_status_reg;
		ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
		ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
	} else if (is_qla8032(ha) || is_qla8042(ha)) {
		ha->isp_ops = &qla4_83xx_isp_ops;
		ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
	} else {
		ha->isp_ops = &qla4xxx_isp_ops;
	}

	if (is_qla80XX(ha)) {
		rwlock_init(&ha->hw_lock);
		ha->pf_bit = ha->func_num << 16;
		/* Set EEH reset type to fundamental if required by hba */
		pdev->needs_freset = 1;
	}

	/* Configure PCI I/O space. */
	ret = ha->isp_ops->iospace_config(ha);
	if (ret)
		goto probe_failed_ioconfig;

	ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
		   pdev->device, pdev->irq, ha->reg);

	qla4xxx_config_dma_addressing(ha);

	/* Initialize lists and spinlocks. */
	INIT_LIST_HEAD(&ha->free_srb_q);

	mutex_init(&ha->mbox_sem);
	mutex_init(&ha->chap_sem);
	init_completion(&ha->mbx_intr_comp);
	init_completion(&ha->disable_acb_comp);
	init_completion(&ha->idc_comp);
	init_completion(&ha->link_up_comp);

	spin_lock_init(&ha->hardware_lock);
	spin_lock_init(&ha->work_lock);

	/* Initialize work list */
	INIT_LIST_HEAD(&ha->work_list);

	/* Allocate dma buffers */
	if (qla4xxx_mem_alloc(ha)) {
		ql4_printk(KERN_WARNING, ha,
		    "[ERROR] Failed to allocate memory for adapter\n");

		ret = -ENOMEM;
		goto probe_failed;
	}

	host->cmd_per_lun = 3;
	host->max_channel = 0;
	host->max_lun = MAX_LUNS - 1;
	host->max_id = MAX_TARGETS;
	host->max_cmd_len = IOCB_MAX_CDB_LEN;
	host->can_queue = MAX_SRBS ;
	host->transportt = qla4xxx_scsi_transport;

	pci_set_drvdata(pdev, ha);

	ret = scsi_add_host(host, &pdev->dev);
	if (ret)
		goto probe_failed;

	if (is_qla80XX(ha))
		qla4_8xxx_get_flash_info(ha);

	if (is_qla8032(ha) || is_qla8042(ha)) {
		qla4_83xx_read_reset_template(ha);
		/*
		 * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
		 * If DONRESET_BIT0 is set, drivers should not set dev_state
		 * to NEED_RESET. But if NEED_RESET is set, drivers should
		 * should honor the reset.
		 */
		if (ql4xdontresethba == 1)
			qla4_83xx_set_idc_dontreset(ha);
	}

	/*
	 * Initialize the Host adapter request/response queues and
	 * firmware
	 * NOTE: interrupts enabled upon successful completion
	 */
	status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);

	/* Dont retry adapter initialization if IRQ allocation failed */
	if (is_qla80XX(ha) && (status == QLA_ERROR))
		goto skip_retry_init;

	while ((!test_bit(AF_ONLINE, &ha->flags)) &&
	    init_retry_count++ < MAX_INIT_RETRIES) {

		if (is_qla80XX(ha)) {
			ha->isp_ops->idc_lock(ha);
			dev_state = qla4_8xxx_rd_direct(ha,
							QLA8XXX_CRB_DEV_STATE);
			ha->isp_ops->idc_unlock(ha);
			if (dev_state == QLA8XXX_DEV_FAILED) {
				ql4_printk(KERN_WARNING, ha, "%s: don't retry "
				    "initialize adapter. H/W is in failed state\n",
				    __func__);
				break;
			}
		}
		DEBUG2(printk("scsi: %s: retrying adapter initialization "
			      "(%d)\n", __func__, init_retry_count));

		if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
			continue;

		status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
		if (is_qla80XX(ha) && (status == QLA_ERROR)) {
			if (qla4_8xxx_check_init_adapter_retry(ha) == QLA_ERROR)
				goto skip_retry_init;
		}
	}

skip_retry_init:
	if (!test_bit(AF_ONLINE, &ha->flags)) {
		ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");

		if ((is_qla8022(ha) && ql4xdontresethba) ||
		    ((is_qla8032(ha) || is_qla8042(ha)) &&
		     qla4_83xx_idc_dontreset(ha))) {
			/* Put the device in failed state. */
			DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
			ha->isp_ops->idc_lock(ha);
			qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
					    QLA8XXX_DEV_FAILED);
			ha->isp_ops->idc_unlock(ha);
		}
		ret = -ENODEV;
		goto remove_host;
	}

	/* Startup the kernel thread for this host adapter. */
	DEBUG2(printk("scsi: %s: Starting kernel thread for "
		      "qla4xxx_dpc\n", __func__));
	sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
	ha->dpc_thread = create_singlethread_workqueue(buf);
	if (!ha->dpc_thread) {
		ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
		ret = -ENODEV;
		goto remove_host;
	}
	INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);

	ha->task_wq = alloc_workqueue("qla4xxx_%lu_task", WQ_MEM_RECLAIM, 1,
				      ha->host_no);
	if (!ha->task_wq) {
		ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
		ret = -ENODEV;
		goto remove_host;
	}

	/*
	 * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
	 * (which is called indirectly by qla4xxx_initialize_adapter),
	 * so that irqs will be registered after crbinit but before
	 * mbx_intr_enable.
	 */
	if (is_qla40XX(ha)) {
		ret = qla4xxx_request_irqs(ha);
		if (ret) {
			ql4_printk(KERN_WARNING, ha, "Failed to reserve "
			    "interrupt %d already in use.\n", pdev->irq);
			goto remove_host;
		}
	}

	pci_save_state(ha->pdev);
	ha->isp_ops->enable_intrs(ha);

	/* Start timer thread. */
	qla4xxx_start_timer(ha, 1);

	set_bit(AF_INIT_DONE, &ha->flags);

	qla4_8xxx_alloc_sysfs_attr(ha);

	printk(KERN_INFO
	       " QLogic iSCSI HBA Driver version: %s\n"
	       "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
	       qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
	       ha->host_no, ha->fw_info.fw_major, ha->fw_info.fw_minor,
	       ha->fw_info.fw_patch, ha->fw_info.fw_build);

	/* Set the driver version */
	if (is_qla80XX(ha))
		qla4_8xxx_set_param(ha, SET_DRVR_VERSION);

	if (qla4xxx_setup_boot_info(ha))
		ql4_printk(KERN_ERR, ha,
			   "%s: No iSCSI boot target configured\n", __func__);

	set_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags);
	/* Perform the build ddb list and login to each */
	qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
	iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
	qla4xxx_wait_login_resp_boot_tgt(ha);

	qla4xxx_create_chap_list(ha);

	qla4xxx_create_ifaces(ha);
	return 0;

remove_host:
	scsi_remove_host(ha->host);

probe_failed:
	qla4xxx_free_adapter(ha);

probe_failed_ioconfig:
	pci_disable_pcie_error_reporting(pdev);
	scsi_host_put(ha->host);

probe_disable_device:
	pci_disable_device(pdev);

	return ret;
}

/**
 * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
 * @ha: pointer to adapter structure
 *
 * Mark the other ISP-4xxx port to indicate that the driver is being removed,
 * so that the other port will not re-initialize while in the process of
 * removing the ha due to driver unload or hba hotplug.
 **/
static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
{
	struct scsi_qla_host *other_ha = NULL;
	struct pci_dev *other_pdev = NULL;
	int fn = ISP4XXX_PCI_FN_2;

	/*iscsi function numbers for ISP4xxx is 1 and 3*/
	if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
		fn = ISP4XXX_PCI_FN_1;

	other_pdev =
		pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
		ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
		fn));

	/* Get other_ha if other_pdev is valid and state is enable*/
	if (other_pdev) {
		if (atomic_read(&other_pdev->enable_cnt)) {
			other_ha = pci_get_drvdata(other_pdev);
			if (other_ha) {
				set_bit(AF_HA_REMOVAL, &other_ha->flags);
				DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
				    "Prevent %s reinit\n", __func__,
				    dev_name(&other_ha->pdev->dev)));
			}
		}
		pci_dev_put(other_pdev);
	}
}

static void qla4xxx_destroy_ddb(struct scsi_qla_host *ha,
		struct ddb_entry *ddb_entry)
{
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	unsigned long wtime;
	uint32_t ddb_state;
	int options;
	int status;

	options = LOGOUT_OPTION_CLOSE_SESSION;
	if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR) {
		ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
		goto clear_ddb;
	}

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to allocate dma buffer\n", __func__);
		goto clear_ddb;
	}

	wtime = jiffies + (HZ * LOGOUT_TOV);
	do {
		status = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
						 fw_ddb_entry, fw_ddb_entry_dma,
						 NULL, NULL, &ddb_state, NULL,
						 NULL, NULL);
		if (status == QLA_ERROR)
			goto free_ddb;

		if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
		    (ddb_state == DDB_DS_SESSION_FAILED))
			goto free_ddb;

		schedule_timeout_uninterruptible(HZ);
	} while ((time_after(wtime, jiffies)));

free_ddb:
	dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
			  fw_ddb_entry, fw_ddb_entry_dma);
clear_ddb:
	qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
}

static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
{
	struct ddb_entry *ddb_entry;
	int idx;

	for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {

		ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
		if ((ddb_entry != NULL) &&
		    (ddb_entry->ddb_type == FLASH_DDB)) {

			qla4xxx_destroy_ddb(ha, ddb_entry);
			/*
			 * we have decremented the reference count of the driver
			 * when we setup the session to have the driver unload
			 * to be seamless without actually destroying the
			 * session
			 **/
			try_module_get(qla4xxx_iscsi_transport.owner);
			iscsi_destroy_endpoint(ddb_entry->conn->ep);
			qla4xxx_free_ddb(ha, ddb_entry);
			iscsi_session_teardown(ddb_entry->sess);
		}
	}
}
/**
 * qla4xxx_remove_adapter - callback function to remove adapter.
 * @pci_dev: PCI device pointer
 **/
static void qla4xxx_remove_adapter(struct pci_dev *pdev)
{
	struct scsi_qla_host *ha;

	/*
	 * If the PCI device is disabled then it means probe_adapter had
	 * failed and resources already cleaned up on probe_adapter exit.
	 */
	if (!pci_is_enabled(pdev))
		return;

	ha = pci_get_drvdata(pdev);

	if (is_qla40XX(ha))
		qla4xxx_prevent_other_port_reinit(ha);

	/* destroy iface from sysfs */
	qla4xxx_destroy_ifaces(ha);

	if ((!ql4xdisablesysfsboot) && ha->boot_kset)
		iscsi_boot_destroy_kset(ha->boot_kset);

	qla4xxx_destroy_fw_ddb_session(ha);
	qla4_8xxx_free_sysfs_attr(ha);

	qla4xxx_sysfs_ddb_remove(ha);
	scsi_remove_host(ha->host);

	qla4xxx_free_adapter(ha);

	scsi_host_put(ha->host);

	pci_disable_pcie_error_reporting(pdev);
	pci_disable_device(pdev);
}

/**
 * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
 * @ha: HA context
 */
static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
{
	/* Update our PCI device dma_mask for full 64 bit mask */
	if (dma_set_mask_and_coherent(&ha->pdev->dev, DMA_BIT_MASK(64))) {
		dev_dbg(&ha->pdev->dev,
			  "Failed to set 64 bit PCI consistent mask; "
			   "using 32 bit.\n");
		dma_set_mask_and_coherent(&ha->pdev->dev, DMA_BIT_MASK(32));
	}
}

static int qla4xxx_slave_alloc(struct scsi_device *sdev)
{
	struct iscsi_cls_session *cls_sess;
	struct iscsi_session *sess;
	struct ddb_entry *ddb;
	int queue_depth = QL4_DEF_QDEPTH;

	cls_sess = starget_to_session(sdev->sdev_target);
	sess = cls_sess->dd_data;
	ddb = sess->dd_data;

	sdev->hostdata = ddb;

	if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
		queue_depth = ql4xmaxqdepth;

	scsi_change_queue_depth(sdev, queue_depth);
	return 0;
}

/**
 * qla4xxx_del_from_active_array - returns an active srb
 * @ha: Pointer to host adapter structure.
 * @index: index into the active_array
 *
 * This routine removes and returns the srb at the specified index
 **/
struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
    uint32_t index)
{
	struct srb *srb = NULL;
	struct scsi_cmnd *cmd = NULL;

	cmd = scsi_host_find_tag(ha->host, index);
	if (!cmd)
		return srb;

	srb = (struct srb *)CMD_SP(cmd);
	if (!srb)
		return srb;

	/* update counters */
	if (srb->flags & SRB_DMA_VALID) {
		ha->iocb_cnt -= srb->iocb_cnt;
		if (srb->cmd)
			srb->cmd->host_scribble =
				(unsigned char *)(unsigned long) MAX_SRBS;
	}
	return srb;
}

/**
 * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
 * @ha: Pointer to host adapter structure.
 * @cmd: Scsi Command to wait on.
 *
 * This routine waits for the command to be returned by the Firmware
 * for some max time.
 **/
static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
				      struct scsi_cmnd *cmd)
{
	int done = 0;
	struct srb *rp;
	uint32_t max_wait_time = EH_WAIT_CMD_TOV;
	int ret = SUCCESS;

	/* Dont wait on command if PCI error is being handled
	 * by PCI AER driver
	 */
	if (unlikely(pci_channel_offline(ha->pdev)) ||
	    (test_bit(AF_EEH_BUSY, &ha->flags))) {
		ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
		    ha->host_no, __func__);
		return ret;
	}

	do {
		/* Checking to see if its returned to OS */
		rp = (struct srb *) CMD_SP(cmd);
		if (rp == NULL) {
			done++;
			break;
		}

		msleep(2000);
	} while (max_wait_time--);

	return done;
}

/**
 * qla4xxx_wait_for_hba_online - waits for HBA to come online
 * @ha: Pointer to host adapter structure
 **/
static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
{
	unsigned long wait_online;

	wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
	while (time_before(jiffies, wait_online)) {

		if (adapter_up(ha))
			return QLA_SUCCESS;

		msleep(2000);
	}

	return QLA_ERROR;
}

/**
 * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
 * @ha: pointer to HBA
 * @t: target id
 * @l: lun id
 *
 * This function waits for all outstanding commands to a lun to complete. It
 * returns 0 if all pending commands are returned and 1 otherwise.
 **/
static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
					struct scsi_target *stgt,
					struct scsi_device *sdev)
{
	int cnt;
	int status = 0;
	struct scsi_cmnd *cmd;

	/*
	 * Waiting for all commands for the designated target or dev
	 * in the active array
	 */
	for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
		cmd = scsi_host_find_tag(ha->host, cnt);
		if (cmd && stgt == scsi_target(cmd->device) &&
		    (!sdev || sdev == cmd->device)) {
			if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
				status++;
				break;
			}
		}
	}
	return status;
}

/**
 * qla4xxx_eh_abort - callback for abort task.
 * @cmd: Pointer to Linux's SCSI command structure
 *
 * This routine is called by the Linux OS to abort the specified
 * command.
 **/
static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
{
	struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
	unsigned int id = cmd->device->id;
	uint64_t lun = cmd->device->lun;
	unsigned long flags;
	struct srb *srb = NULL;
	int ret = SUCCESS;
	int wait = 0;
	int rval;

	ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Abort command issued cmd=%p, cdb=0x%x\n",
		   ha->host_no, id, lun, cmd, cmd->cmnd[0]);

	rval = qla4xxx_isp_check_reg(ha);
	if (rval != QLA_SUCCESS) {
		ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
		return FAILED;
	}

	spin_lock_irqsave(&ha->hardware_lock, flags);
	srb = (struct srb *) CMD_SP(cmd);
	if (!srb) {
		spin_unlock_irqrestore(&ha->hardware_lock, flags);
		ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Specified command has already completed.\n",
			   ha->host_no, id, lun);
		return SUCCESS;
	}
	kref_get(&srb->srb_ref);
	spin_unlock_irqrestore(&ha->hardware_lock, flags);

	if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
		DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx failed.\n",
		    ha->host_no, id, lun));
		ret = FAILED;
	} else {
		DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx success.\n",
		    ha->host_no, id, lun));
		wait = 1;
	}

	kref_put(&srb->srb_ref, qla4xxx_srb_compl);

	/* Wait for command to complete */
	if (wait) {
		if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
			DEBUG2(printk("scsi%ld:%d:%llu: Abort handler timed out\n",
			    ha->host_no, id, lun));
			ret = FAILED;
		}
	}

	ql4_printk(KERN_INFO, ha,
	    "scsi%ld:%d:%llu: Abort command - %s\n",
	    ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");

	return ret;
}

/**
 * qla4xxx_eh_device_reset - callback for target reset.
 * @cmd: Pointer to Linux's SCSI command structure
 *
 * This routine is called by the Linux OS to reset all luns on the
 * specified target.
 **/
static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
{
	struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
	struct ddb_entry *ddb_entry = cmd->device->hostdata;
	int ret = FAILED, stat;
	int rval;

	if (!ddb_entry)
		return ret;

	ret = iscsi_block_scsi_eh(cmd);
	if (ret)
		return ret;
	ret = FAILED;

	ql4_printk(KERN_INFO, ha,
		   "scsi%ld:%d:%d:%llu: DEVICE RESET ISSUED.\n", ha->host_no,
		   cmd->device->channel, cmd->device->id, cmd->device->lun);

	DEBUG2(printk(KERN_INFO
		      "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
		      "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
		      cmd, jiffies, cmd->request->timeout / HZ,
		      ha->dpc_flags, cmd->result, cmd->allowed));

	rval = qla4xxx_isp_check_reg(ha);
	if (rval != QLA_SUCCESS) {
		ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
		return FAILED;
	}

	/* FIXME: wait for hba to go online */
	stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
	if (stat != QLA_SUCCESS) {
		ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
		goto eh_dev_reset_done;
	}

	if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
					 cmd->device)) {
		ql4_printk(KERN_INFO, ha,
			   "DEVICE RESET FAILED - waiting for "
			   "commands.\n");
		goto eh_dev_reset_done;
	}

	/* Send marker. */
	if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
		MM_LUN_RESET) != QLA_SUCCESS)
		goto eh_dev_reset_done;

	ql4_printk(KERN_INFO, ha,
		   "scsi(%ld:%d:%d:%llu): DEVICE RESET SUCCEEDED.\n",
		   ha->host_no, cmd->device->channel, cmd->device->id,
		   cmd->device->lun);

	ret = SUCCESS;

eh_dev_reset_done:

	return ret;
}

/**
 * qla4xxx_eh_target_reset - callback for target reset.
 * @cmd: Pointer to Linux's SCSI command structure
 *
 * This routine is called by the Linux OS to reset the target.
 **/
static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
{
	struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
	struct ddb_entry *ddb_entry = cmd->device->hostdata;
	int stat, ret;
	int rval;

	if (!ddb_entry)
		return FAILED;

	ret = iscsi_block_scsi_eh(cmd);
	if (ret)
		return ret;

	starget_printk(KERN_INFO, scsi_target(cmd->device),
		       "WARM TARGET RESET ISSUED.\n");

	DEBUG2(printk(KERN_INFO
		      "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
		      "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
		      ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
		      ha->dpc_flags, cmd->result, cmd->allowed));

	rval = qla4xxx_isp_check_reg(ha);
	if (rval != QLA_SUCCESS) {
		ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
		return FAILED;
	}

	stat = qla4xxx_reset_target(ha, ddb_entry);
	if (stat != QLA_SUCCESS) {
		starget_printk(KERN_INFO, scsi_target(cmd->device),
			       "WARM TARGET RESET FAILED.\n");
		return FAILED;
	}

	if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
					 NULL)) {
		starget_printk(KERN_INFO, scsi_target(cmd->device),
			       "WARM TARGET DEVICE RESET FAILED - "
			       "waiting for commands.\n");
		return FAILED;
	}

	/* Send marker. */
	if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
		MM_TGT_WARM_RESET) != QLA_SUCCESS) {
		starget_printk(KERN_INFO, scsi_target(cmd->device),
			       "WARM TARGET DEVICE RESET FAILED - "
			       "marker iocb failed.\n");
		return FAILED;
	}

	starget_printk(KERN_INFO, scsi_target(cmd->device),
		       "WARM TARGET RESET SUCCEEDED.\n");
	return SUCCESS;
}

/**
 * qla4xxx_is_eh_active - check if error handler is running
 * @shost: Pointer to SCSI Host struct
 *
 * This routine finds that if reset host is called in EH
 * scenario or from some application like sg_reset
 **/
static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
{
	if (shost->shost_state == SHOST_RECOVERY)
		return 1;
	return 0;
}

/**
 * qla4xxx_eh_host_reset - kernel callback
 * @cmd: Pointer to Linux's SCSI command structure
 *
 * This routine is invoked by the Linux kernel to perform fatal error
 * recovery on the specified adapter.
 **/
static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
{
	int return_status = FAILED;
	struct scsi_qla_host *ha;
	int rval;

	ha = to_qla_host(cmd->device->host);

	rval = qla4xxx_isp_check_reg(ha);
	if (rval != QLA_SUCCESS) {
		ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
		return FAILED;
	}

	if ((is_qla8032(ha) || is_qla8042(ha)) && ql4xdontresethba)
		qla4_83xx_set_idc_dontreset(ha);

	/*
	 * For ISP8324 and ISP8042, if IDC_CTRL DONTRESET_BIT0 is set by other
	 * protocol drivers, we should not set device_state to NEED_RESET
	 */
	if (ql4xdontresethba ||
	    ((is_qla8032(ha) || is_qla8042(ha)) &&
	     qla4_83xx_idc_dontreset(ha))) {
		DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
		     ha->host_no, __func__));

		/* Clear outstanding srb in queues */
		if (qla4xxx_is_eh_active(cmd->device->host))
			qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);

		return FAILED;
	}

	ql4_printk(KERN_INFO, ha,
		   "scsi(%ld:%d:%d:%llu): HOST RESET ISSUED.\n", ha->host_no,
		   cmd->device->channel, cmd->device->id, cmd->device->lun);

	if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
		DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
			      "DEAD.\n", ha->host_no, cmd->device->channel,
			      __func__));

		return FAILED;
	}

	if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
		if (is_qla80XX(ha))
			set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
		else
			set_bit(DPC_RESET_HA, &ha->dpc_flags);
	}

	if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
		return_status = SUCCESS;

	ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
		   return_status == FAILED ? "FAILED" : "SUCCEEDED");

	return return_status;
}

static int qla4xxx_context_reset(struct scsi_qla_host *ha)
{
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];
	struct addr_ctrl_blk_def *acb = NULL;
	uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
	int rval = QLA_SUCCESS;
	dma_addr_t acb_dma;

	acb = dma_alloc_coherent(&ha->pdev->dev,
				 sizeof(struct addr_ctrl_blk_def),
				 &acb_dma, GFP_KERNEL);
	if (!acb) {
		ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
			   __func__);
		rval = -ENOMEM;
		goto exit_port_reset;
	}

	memset(acb, 0, acb_len);

	rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
	if (rval != QLA_SUCCESS) {
		rval = -EIO;
		goto exit_free_acb;
	}

	rval = qla4xxx_disable_acb(ha);
	if (rval != QLA_SUCCESS) {
		rval = -EIO;
		goto exit_free_acb;
	}

	wait_for_completion_timeout(&ha->disable_acb_comp,
				    DISABLE_ACB_TOV * HZ);

	rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
	if (rval != QLA_SUCCESS) {
		rval = -EIO;
		goto exit_free_acb;
	}

exit_free_acb:
	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
			  acb, acb_dma);
exit_port_reset:
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
			  rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
	return rval;
}

static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	int rval = QLA_SUCCESS;
	uint32_t idc_ctrl;

	if (ql4xdontresethba) {
		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
				  __func__));
		rval = -EPERM;
		goto exit_host_reset;
	}

	if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
		goto recover_adapter;

	switch (reset_type) {
	case SCSI_ADAPTER_RESET:
		set_bit(DPC_RESET_HA, &ha->dpc_flags);
		break;
	case SCSI_FIRMWARE_RESET:
		if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
			if (is_qla80XX(ha))
				/* set firmware context reset */
				set_bit(DPC_RESET_HA_FW_CONTEXT,
					&ha->dpc_flags);
			else {
				rval = qla4xxx_context_reset(ha);
				goto exit_host_reset;
			}
		}
		break;
	}

recover_adapter:
	/* For ISP8324 and ISP8042 set graceful reset bit in IDC_DRV_CTRL if
	 * reset is issued by application */
	if ((is_qla8032(ha) || is_qla8042(ha)) &&
	    test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
		idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
		qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
				 (idc_ctrl | GRACEFUL_RESET_BIT1));
	}

	rval = qla4xxx_recover_adapter(ha);
	if (rval != QLA_SUCCESS) {
		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
				  __func__));
		rval = -EIO;
	}

exit_host_reset:
	return rval;
}

/* PCI AER driver recovers from all correctable errors w/o
 * driver intervention. For uncorrectable errors PCI AER
 * driver calls the following device driver's callbacks
 *
 * - Fatal Errors - link_reset
 * - Non-Fatal Errors - driver's error_detected() which
 * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
 *
 * PCI AER driver calls
 * CAN_RECOVER - driver's mmio_enabled(), mmio_enabled()
 *               returns RECOVERED or NEED_RESET if fw_hung
 * NEED_RESET - driver's slot_reset()
 * DISCONNECT - device is dead & cannot recover
 * RECOVERED - driver's resume()
 */
static pci_ers_result_t
qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
{
	struct scsi_qla_host *ha = pci_get_drvdata(pdev);

	ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
	    ha->host_no, __func__, state);

	if (!is_aer_supported(ha))
		return PCI_ERS_RESULT_NONE;

	switch (state) {
	case pci_channel_io_normal:
		clear_bit(AF_EEH_BUSY, &ha->flags);
		return PCI_ERS_RESULT_CAN_RECOVER;
	case pci_channel_io_frozen:
		set_bit(AF_EEH_BUSY, &ha->flags);
		qla4xxx_mailbox_premature_completion(ha);
		qla4xxx_free_irqs(ha);
		pci_disable_device(pdev);
		/* Return back all IOs */
		qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
		return PCI_ERS_RESULT_NEED_RESET;
	case pci_channel_io_perm_failure:
		set_bit(AF_EEH_BUSY, &ha->flags);
		set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
		qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
		return PCI_ERS_RESULT_DISCONNECT;
	}
	return PCI_ERS_RESULT_NEED_RESET;
}

/**
 * qla4xxx_pci_mmio_enabled() gets called if
 * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
 * and read/write to the device still works.
 **/
static pci_ers_result_t
qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
{
	struct scsi_qla_host *ha = pci_get_drvdata(pdev);

	if (!is_aer_supported(ha))
		return PCI_ERS_RESULT_NONE;

	return PCI_ERS_RESULT_RECOVERED;
}

static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
{
	uint32_t rval = QLA_ERROR;
	int fn;
	struct pci_dev *other_pdev = NULL;

	ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);

	set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);

	if (test_bit(AF_ONLINE, &ha->flags)) {
		clear_bit(AF_ONLINE, &ha->flags);
		clear_bit(AF_LINK_UP, &ha->flags);
		iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
		qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
	}

	fn = PCI_FUNC(ha->pdev->devfn);
	if (is_qla8022(ha)) {
		while (fn > 0) {
			fn--;
			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at func %x\n",
				   ha->host_no, __func__, fn);
			/* Get the pci device given the domain, bus,
			 * slot/function number */
			other_pdev = pci_get_domain_bus_and_slot(
					   pci_domain_nr(ha->pdev->bus),
					   ha->pdev->bus->number,
					   PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
					   fn));

			if (!other_pdev)
				continue;

			if (atomic_read(&other_pdev->enable_cnt)) {
				ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI func in enabled state%x\n",
					   ha->host_no, __func__, fn);
				pci_dev_put(other_pdev);
				break;
			}
			pci_dev_put(other_pdev);
		}
	} else {
		/* this case is meant for ISP83xx/ISP84xx only */
		if (qla4_83xx_can_perform_reset(ha)) {
			/* reset fn as iSCSI is going to perform the reset */
			fn = 0;
		}
	}

	/* The first function on the card, the reset owner will
	 * start & initialize the firmware. The other functions
	 * on the card will reset the firmware context
	 */
	if (!fn) {
		ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
		    "0x%x is the owner\n", ha->host_no, __func__,
		    ha->pdev->devfn);

		ha->isp_ops->idc_lock(ha);
		qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
				    QLA8XXX_DEV_COLD);
		ha->isp_ops->idc_unlock(ha);

		rval = qla4_8xxx_update_idc_reg(ha);
		if (rval == QLA_ERROR) {
			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
				   ha->host_no, __func__);
			ha->isp_ops->idc_lock(ha);
			qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
					    QLA8XXX_DEV_FAILED);
			ha->isp_ops->idc_unlock(ha);
			goto exit_error_recovery;
		}

		clear_bit(AF_FW_RECOVERY, &ha->flags);
		rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);

		if (rval != QLA_SUCCESS) {
			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
			    "FAILED\n", ha->host_no, __func__);
			qla4xxx_free_irqs(ha);
			ha->isp_ops->idc_lock(ha);
			qla4_8xxx_clear_drv_active(ha);
			qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
					    QLA8XXX_DEV_FAILED);
			ha->isp_ops->idc_unlock(ha);
		} else {
			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
			    "READY\n", ha->host_no, __func__);
			ha->isp_ops->idc_lock(ha);
			qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
					    QLA8XXX_DEV_READY);
			/* Clear driver state register */
			qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
			qla4_8xxx_set_drv_active(ha);
			ha->isp_ops->idc_unlock(ha);
			ha->isp_ops->enable_intrs(ha);
		}
	} else {
		ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
		    "the reset owner\n", ha->host_no, __func__,
		    ha->pdev->devfn);
		if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
		     QLA8XXX_DEV_READY)) {
			clear_bit(AF_FW_RECOVERY, &ha->flags);
			rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
			if (rval == QLA_SUCCESS)
				ha->isp_ops->enable_intrs(ha);
			else
				qla4xxx_free_irqs(ha);

			ha->isp_ops->idc_lock(ha);
			qla4_8xxx_set_drv_active(ha);
			ha->isp_ops->idc_unlock(ha);
		}
	}
exit_error_recovery:
	clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
	return rval;
}

static pci_ers_result_t
qla4xxx_pci_slot_reset(struct pci_dev *pdev)
{
	pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
	struct scsi_qla_host *ha = pci_get_drvdata(pdev);
	int rc;

	ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
	    ha->host_no, __func__);

	if (!is_aer_supported(ha))
		return PCI_ERS_RESULT_NONE;

	/* Restore the saved state of PCIe device -
	 * BAR registers, PCI Config space, PCIX, MSI,
	 * IOV states
	 */
	pci_restore_state(pdev);

	/* pci_restore_state() clears the saved_state flag of the device
	 * save restored state which resets saved_state flag
	 */
	pci_save_state(pdev);

	/* Initialize device or resume if in suspended state */
	rc = pci_enable_device(pdev);
	if (rc) {
		ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
		    "device after reset\n", ha->host_no, __func__);
		goto exit_slot_reset;
	}

	ha->isp_ops->disable_intrs(ha);

	if (is_qla80XX(ha)) {
		if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
			ret = PCI_ERS_RESULT_RECOVERED;
			goto exit_slot_reset;
		} else
			goto exit_slot_reset;
	}

exit_slot_reset:
	ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
	    "device after reset\n", ha->host_no, __func__, ret);
	return ret;
}

static void
qla4xxx_pci_resume(struct pci_dev *pdev)
{
	struct scsi_qla_host *ha = pci_get_drvdata(pdev);
	int ret;

	ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
	    ha->host_no, __func__);

	ret = qla4xxx_wait_for_hba_online(ha);
	if (ret != QLA_SUCCESS) {
		ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
		    "resume I/O from slot/link_reset\n", ha->host_no,
		     __func__);
	}

	clear_bit(AF_EEH_BUSY, &ha->flags);
}

static const struct pci_error_handlers qla4xxx_err_handler = {
	.error_detected = qla4xxx_pci_error_detected,
	.mmio_enabled = qla4xxx_pci_mmio_enabled,
	.slot_reset = qla4xxx_pci_slot_reset,
	.resume = qla4xxx_pci_resume,
};

static struct pci_device_id qla4xxx_pci_tbl[] = {
	{
		.vendor		= PCI_VENDOR_ID_QLOGIC,
		.device		= PCI_DEVICE_ID_QLOGIC_ISP4010,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
	},
	{
		.vendor		= PCI_VENDOR_ID_QLOGIC,
		.device		= PCI_DEVICE_ID_QLOGIC_ISP4022,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
	},
	{
		.vendor		= PCI_VENDOR_ID_QLOGIC,
		.device		= PCI_DEVICE_ID_QLOGIC_ISP4032,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
	},
	{
		.vendor         = PCI_VENDOR_ID_QLOGIC,
		.device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
		.subvendor      = PCI_ANY_ID,
		.subdevice      = PCI_ANY_ID,
	},
	{
		.vendor		= PCI_VENDOR_ID_QLOGIC,
		.device		= PCI_DEVICE_ID_QLOGIC_ISP8324,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
	},
	{
		.vendor		= PCI_VENDOR_ID_QLOGIC,
		.device		= PCI_DEVICE_ID_QLOGIC_ISP8042,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
	},
	{0, 0},
};
MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);

static struct pci_driver qla4xxx_pci_driver = {
	.name		= DRIVER_NAME,
	.id_table	= qla4xxx_pci_tbl,
	.probe		= qla4xxx_probe_adapter,
	.remove		= qla4xxx_remove_adapter,
	.err_handler = &qla4xxx_err_handler,
};

static int __init qla4xxx_module_init(void)
{
	int ret;

	if (ql4xqfulltracking)
		qla4xxx_driver_template.track_queue_depth = 1;

	/* Allocate cache for SRBs. */
	srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
				       SLAB_HWCACHE_ALIGN, NULL);
	if (srb_cachep == NULL) {
		printk(KERN_ERR
		       "%s: Unable to allocate SRB cache..."
		       "Failing load!\n", DRIVER_NAME);
		ret = -ENOMEM;
		goto no_srp_cache;
	}

	/* Derive version string. */
	strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
	if (ql4xextended_error_logging)
		strcat(qla4xxx_version_str, "-debug");

	qla4xxx_scsi_transport =
		iscsi_register_transport(&qla4xxx_iscsi_transport);
	if (!qla4xxx_scsi_transport){
		ret = -ENODEV;
		goto release_srb_cache;
	}

	ret = pci_register_driver(&qla4xxx_pci_driver);
	if (ret)
		goto unregister_transport;

	printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
	return 0;

unregister_transport:
	iscsi_unregister_transport(&qla4xxx_iscsi_transport);
release_srb_cache:
	kmem_cache_destroy(srb_cachep);
no_srp_cache:
	return ret;
}

static void __exit qla4xxx_module_exit(void)
{
	pci_unregister_driver(&qla4xxx_pci_driver);
	iscsi_unregister_transport(&qla4xxx_iscsi_transport);
	kmem_cache_destroy(srb_cachep);
}

module_init(qla4xxx_module_init);
module_exit(qla4xxx_module_exit);

MODULE_AUTHOR("QLogic Corporation");
MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(QLA4XXX_DRIVER_VERSION);