summaryrefslogtreecommitdiffstats
path: root/drivers/net/vxge/vxge-main.c
blob: 6c838b3e063a6fc6905e1eb6b429d0472b12a2e9 (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
/******************************************************************************
* This software may be used and distributed according to the terms of
* the GNU General Public License (GPL), incorporated herein by reference.
* Drivers based on or derived from this code fall under the GPL and must
* retain the authorship, copyright and license notice.  This file is not
* a complete program and may only be used when the entire operating
* system is licensed under the GPL.
* See the file COPYING in this distribution for more information.
*
* vxge-main.c: Driver for Neterion Inc's X3100 Series 10GbE PCIe I/O
*              Virtualized Server Adapter.
* Copyright(c) 2002-2009 Neterion Inc.
*
* The module loadable parameters that are supported by the driver and a brief
* explanation of all the variables:
* vlan_tag_strip:
*	Strip VLAN Tag enable/disable. Instructs the device to remove
*	the VLAN tag from all received tagged frames that are not
*	replicated at the internal L2 switch.
*		0 - Do not strip the VLAN tag.
*		1 - Strip the VLAN tag.
*
* addr_learn_en:
*	Enable learning the mac address of the guest OS interface in
*	a virtualization environment.
*		0 - DISABLE
*		1 - ENABLE
*
* max_config_port:
*	Maximum number of port to be supported.
*		MIN -1 and MAX - 2
*
* max_config_vpath:
*	This configures the maximum no of VPATH configures for each
* 	device function.
*		MIN - 1 and MAX - 17
*
* max_config_dev:
*	This configures maximum no of Device function to be enabled.
*		MIN - 1 and MAX - 17
*
******************************************************************************/

#include <linux/if_vlan.h>
#include <linux/pci.h>
#include <linux/tcp.h>
#include <net/ip.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include "vxge-main.h"
#include "vxge-reg.h"

MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
	"Virtualized Server Adapter");

static struct pci_device_id vxge_id_table[] __devinitdata = {
	{PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
	PCI_ANY_ID},
	{PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
	PCI_ANY_ID},
	{0}
};

MODULE_DEVICE_TABLE(pci, vxge_id_table);

VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);

static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
		{0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
	{[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
module_param_array(bw_percentage, uint, NULL, 0);

static struct vxge_drv_config *driver_config;

static inline int is_vxge_card_up(struct vxgedev *vdev)
{
	return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
}

static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
{
	unsigned long flags = 0;
	struct sk_buff *skb_ptr = NULL;
	struct sk_buff **temp, *head, *skb;

	if (spin_trylock_irqsave(&fifo->tx_lock, flags)) {
		vxge_hw_vpath_poll_tx(fifo->handle, (void **)&skb_ptr);
		spin_unlock_irqrestore(&fifo->tx_lock, flags);
	}
	/* free SKBs */
	head = skb_ptr;
	while (head) {
		skb = head;
		temp = (struct sk_buff **)&skb->cb;
		head = *temp;
		*temp = NULL;
		dev_kfree_skb_irq(skb);
	}
}

static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
{
	int i;

	/* Complete all transmits */
	for (i = 0; i < vdev->no_of_vpath; i++)
		VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
}

static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
{
	int i;
	struct vxge_ring *ring;

	/* Complete all receives*/
	for (i = 0; i < vdev->no_of_vpath; i++) {
		ring = &vdev->vpaths[i].ring;
		vxge_hw_vpath_poll_rx(ring->handle);
	}
}

/*
 * MultiQ manipulation helper functions
 */
void vxge_stop_all_tx_queue(struct vxgedev *vdev)
{
	int i;
	struct net_device *dev = vdev->ndev;

	if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
		for (i = 0; i < vdev->no_of_vpath; i++)
			vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_STOP;
	}
	netif_tx_stop_all_queues(dev);
}

void vxge_stop_tx_queue(struct vxge_fifo *fifo)
{
	struct net_device *dev = fifo->ndev;

	struct netdev_queue *txq = NULL;
	if (fifo->tx_steering_type == TX_MULTIQ_STEERING)
		txq = netdev_get_tx_queue(dev, fifo->driver_id);
	else {
		txq = netdev_get_tx_queue(dev, 0);
		fifo->queue_state = VPATH_QUEUE_STOP;
	}

	netif_tx_stop_queue(txq);
}

void vxge_start_all_tx_queue(struct vxgedev *vdev)
{
	int i;
	struct net_device *dev = vdev->ndev;

	if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
		for (i = 0; i < vdev->no_of_vpath; i++)
			vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
	}
	netif_tx_start_all_queues(dev);
}

static void vxge_wake_all_tx_queue(struct vxgedev *vdev)
{
	int i;
	struct net_device *dev = vdev->ndev;

	if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) {
		for (i = 0; i < vdev->no_of_vpath; i++)
			vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START;
	}
	netif_tx_wake_all_queues(dev);
}

void vxge_wake_tx_queue(struct vxge_fifo *fifo, struct sk_buff *skb)
{
	struct net_device *dev = fifo->ndev;

	int vpath_no = fifo->driver_id;
	struct netdev_queue *txq = NULL;
	if (fifo->tx_steering_type == TX_MULTIQ_STEERING) {
		txq = netdev_get_tx_queue(dev, vpath_no);
		if (netif_tx_queue_stopped(txq))
			netif_tx_wake_queue(txq);
	} else {
		txq = netdev_get_tx_queue(dev, 0);
		if (fifo->queue_state == VPATH_QUEUE_STOP)
			if (netif_tx_queue_stopped(txq)) {
				fifo->queue_state = VPATH_QUEUE_START;
				netif_tx_wake_queue(txq);
			}
	}
}

/*
 * vxge_callback_link_up
 *
 * This function is called during interrupt context to notify link up state
 * change.
 */
void
vxge_callback_link_up(struct __vxge_hw_device *hldev)
{
	struct net_device *dev = hldev->ndev;
	struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);

	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
		vdev->ndev->name, __func__, __LINE__);
	printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
	vdev->stats.link_up++;

	netif_carrier_on(vdev->ndev);
	vxge_wake_all_tx_queue(vdev);

	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
}

/*
 * vxge_callback_link_down
 *
 * This function is called during interrupt context to notify link down state
 * change.
 */
void
vxge_callback_link_down(struct __vxge_hw_device *hldev)
{
	struct net_device *dev = hldev->ndev;
	struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);

	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
	printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);

	vdev->stats.link_down++;
	netif_carrier_off(vdev->ndev);
	vxge_stop_all_tx_queue(vdev);

	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
}

/*
 * vxge_rx_alloc
 *
 * Allocate SKB.
 */
static struct sk_buff*
vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
{
	struct net_device    *dev;
	struct sk_buff       *skb;
	struct vxge_rx_priv *rx_priv;

	dev = ring->ndev;
	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
		ring->ndev->name, __func__, __LINE__);

	rx_priv = vxge_hw_ring_rxd_private_get(dtrh);

	/* try to allocate skb first. this one may fail */
	skb = netdev_alloc_skb(dev, skb_size +
	VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
	if (skb == NULL) {
		vxge_debug_mem(VXGE_ERR,
			"%s: out of memory to allocate SKB", dev->name);
		ring->stats.skb_alloc_fail++;
		return NULL;
	}

	vxge_debug_mem(VXGE_TRACE,
		"%s: %s:%d  Skb : 0x%p", ring->ndev->name,
		__func__, __LINE__, skb);

	skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);

	rx_priv->skb = skb;
	rx_priv->data_size = skb_size;
	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);

	return skb;
}

/*
 * vxge_rx_map
 */
static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
{
	struct vxge_rx_priv *rx_priv;
	dma_addr_t dma_addr;

	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
		ring->ndev->name, __func__, __LINE__);
	rx_priv = vxge_hw_ring_rxd_private_get(dtrh);

	dma_addr = pci_map_single(ring->pdev, rx_priv->skb->data,
				rx_priv->data_size, PCI_DMA_FROMDEVICE);

	if (dma_addr == 0) {
		ring->stats.pci_map_fail++;
		return -EIO;
	}
	vxge_debug_mem(VXGE_TRACE,
		"%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
		ring->ndev->name, __func__, __LINE__,
		(unsigned long long)dma_addr);
	vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);

	rx_priv->data_dma = dma_addr;
	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);

	return 0;
}

/*
 * vxge_rx_initial_replenish
 * Allocation of RxD as an initial replenish procedure.
 */
static enum vxge_hw_status
vxge_rx_initial_replenish(void *dtrh, void *userdata)
{
	struct vxge_ring *ring = (struct vxge_ring *)userdata;
	struct vxge_rx_priv *rx_priv;

	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
		ring->ndev->name, __func__, __LINE__);
	if (vxge_rx_alloc(dtrh, ring,
			  VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
		return VXGE_HW_FAIL;

	if (vxge_rx_map(dtrh, ring)) {
		rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
		dev_kfree_skb(rx_priv->skb);

		return VXGE_HW_FAIL;
	}
	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);

	return VXGE_HW_OK;
}

static inline void
vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
		 int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
{

	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
			ring->ndev->name, __func__, __LINE__);
	skb_record_rx_queue(skb, ring->driver_id);
	skb->protocol = eth_type_trans(skb, ring->ndev);

	ring->stats.rx_frms++;
	ring->stats.rx_bytes += pkt_length;

	if (skb->pkt_type == PACKET_MULTICAST)
		ring->stats.rx_mcast++;

	vxge_debug_rx(VXGE_TRACE,
		"%s: %s:%d  skb protocol = %d",
		ring->ndev->name, __func__, __LINE__, skb->protocol);

	if (ring->gro_enable) {
		if (ring->vlgrp && ext_info->vlan &&
			(ring->vlan_tag_strip ==
				VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
			vlan_gro_receive(&ring->napi, ring->vlgrp,
					ext_info->vlan, skb);
		else
			napi_gro_receive(&ring->napi, skb);
	} else {
		if (ring->vlgrp && vlan &&
			(ring->vlan_tag_strip ==
				VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE))
			vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan);
		else
			netif_receive_skb(skb);
	}
	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
}

static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
				    struct vxge_rx_priv *rx_priv)
{
	pci_dma_sync_single_for_device(ring->pdev,
		rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);

	vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
	vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
}

static inline void vxge_post(int *dtr_cnt, void **first_dtr,
			     void *post_dtr, struct __vxge_hw_ring *ringh)
{
	int dtr_count = *dtr_cnt;
	if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
		if (*first_dtr)
			vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
		*first_dtr = post_dtr;
	} else
		vxge_hw_ring_rxd_post_post(ringh, post_dtr);
	dtr_count++;
	*dtr_cnt = dtr_count;
}

/*
 * vxge_rx_1b_compl
 *
 * If the interrupt is because of a received frame or if the receive ring
 * contains fresh as yet un-processed frames, this function is called.
 */
enum vxge_hw_status
vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
		 u8 t_code, void *userdata)
{
	struct vxge_ring *ring = (struct vxge_ring *)userdata;
	struct  net_device *dev = ring->ndev;
	unsigned int dma_sizes;
	void *first_dtr = NULL;
	int dtr_cnt = 0;
	int data_size;
	dma_addr_t data_dma;
	int pkt_length;
	struct sk_buff *skb;
	struct vxge_rx_priv *rx_priv;
	struct vxge_hw_ring_rxd_info ext_info;
	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
		ring->ndev->name, __func__, __LINE__);
	ring->pkts_processed = 0;

	vxge_hw_ring_replenish(ringh, 0);

	do {
		rx_priv = vxge_hw_ring_rxd_private_get(dtr);
		skb = rx_priv->skb;
		data_size = rx_priv->data_size;
		data_dma = rx_priv->data_dma;

		vxge_debug_rx(VXGE_TRACE,
			"%s: %s:%d  skb = 0x%p",
			ring->ndev->name, __func__, __LINE__, skb);

		vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
		pkt_length = dma_sizes;

		vxge_debug_rx(VXGE_TRACE,
			"%s: %s:%d  Packet Length = %d",
			ring->ndev->name, __func__, __LINE__, pkt_length);

		vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);

		/* check skb validity */
		vxge_assert(skb);

		prefetch((char *)skb + L1_CACHE_BYTES);
		if (unlikely(t_code)) {

			if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
				VXGE_HW_OK) {

				ring->stats.rx_errors++;
				vxge_debug_rx(VXGE_TRACE,
					"%s: %s :%d Rx T_code is %d",
					ring->ndev->name, __func__,
					__LINE__, t_code);

				/* If the t_code is not supported and if the
				 * t_code is other than 0x5 (unparseable packet
				 * such as unknown UPV6 header), Drop it !!!
				 */
				vxge_re_pre_post(dtr, ring, rx_priv);

				vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
				ring->stats.rx_dropped++;
				continue;
			}
		}

		if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {

			if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {

				if (!vxge_rx_map(dtr, ring)) {
					skb_put(skb, pkt_length);

					pci_unmap_single(ring->pdev, data_dma,
						data_size, PCI_DMA_FROMDEVICE);

					vxge_hw_ring_rxd_pre_post(ringh, dtr);
					vxge_post(&dtr_cnt, &first_dtr, dtr,
						ringh);
				} else {
					dev_kfree_skb(rx_priv->skb);
					rx_priv->skb = skb;
					rx_priv->data_size = data_size;
					vxge_re_pre_post(dtr, ring, rx_priv);

					vxge_post(&dtr_cnt, &first_dtr, dtr,
						ringh);
					ring->stats.rx_dropped++;
					break;
				}
			} else {
				vxge_re_pre_post(dtr, ring, rx_priv);

				vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
				ring->stats.rx_dropped++;
				break;
			}
		} else {
			struct sk_buff *skb_up;

			skb_up = netdev_alloc_skb(dev, pkt_length +
				VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
			if (skb_up != NULL) {
				skb_reserve(skb_up,
				    VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);

				pci_dma_sync_single_for_cpu(ring->pdev,
					data_dma, data_size,
					PCI_DMA_FROMDEVICE);

				vxge_debug_mem(VXGE_TRACE,
					"%s: %s:%d  skb_up = %p",
					ring->ndev->name, __func__,
					__LINE__, skb);
				memcpy(skb_up->data, skb->data, pkt_length);

				vxge_re_pre_post(dtr, ring, rx_priv);

				vxge_post(&dtr_cnt, &first_dtr, dtr,
					ringh);
				/* will netif_rx small SKB instead */
				skb = skb_up;
				skb_put(skb, pkt_length);
			} else {
				vxge_re_pre_post(dtr, ring, rx_priv);

				vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
				vxge_debug_rx(VXGE_ERR,
					"%s: vxge_rx_1b_compl: out of "
					"memory", dev->name);
				ring->stats.skb_alloc_fail++;
				break;
			}
		}

		if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
		    !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
		    ring->rx_csum && /* Offload Rx side CSUM */
		    ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
		    ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
			skb->ip_summed = CHECKSUM_UNNECESSARY;
		else
			skb->ip_summed = CHECKSUM_NONE;

		vxge_rx_complete(ring, skb, ext_info.vlan,
			pkt_length, &ext_info);

		ring->budget--;
		ring->pkts_processed++;
		if (!ring->budget)
			break;

	} while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
		&t_code) == VXGE_HW_OK);

	if (first_dtr)
		vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);

	dev->last_rx = jiffies;

	vxge_debug_entryexit(VXGE_TRACE,
				"%s:%d  Exiting...",
				__func__, __LINE__);
	return VXGE_HW_OK;
}

/*
 * vxge_xmit_compl
 *
 * If an interrupt was raised to indicate DMA complete of the Tx packet,
 * this function is called. It identifies the last TxD whose buffer was
 * freed and frees all skbs whose data have already DMA'ed into the NICs
 * internal memory.
 */
enum vxge_hw_status
vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
		enum vxge_hw_fifo_tcode t_code, void *userdata,
		void **skb_ptr)
{
	struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
	struct sk_buff *skb, *head = NULL;
	struct sk_buff **temp;
	int pkt_cnt = 0;

	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d Entered....", __func__, __LINE__);

	do {
		int frg_cnt;
		skb_frag_t *frag;
		int i = 0, j;
		struct vxge_tx_priv *txd_priv =
			vxge_hw_fifo_txdl_private_get(dtr);

		skb = txd_priv->skb;
		frg_cnt = skb_shinfo(skb)->nr_frags;
		frag = &skb_shinfo(skb)->frags[0];

		vxge_debug_tx(VXGE_TRACE,
				"%s: %s:%d fifo_hw = %p dtr = %p "
				"tcode = 0x%x", fifo->ndev->name, __func__,
				__LINE__, fifo_hw, dtr, t_code);
		/* check skb validity */
		vxge_assert(skb);
		vxge_debug_tx(VXGE_TRACE,
			"%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
			fifo->ndev->name, __func__, __LINE__,
			skb, txd_priv, frg_cnt);
		if (unlikely(t_code)) {
			fifo->stats.tx_errors++;
			vxge_debug_tx(VXGE_ERR,
				"%s: tx: dtr %p completed due to "
				"error t_code %01x", fifo->ndev->name,
				dtr, t_code);
			vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
		}

		/*  for unfragmented skb */
		pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
				skb_headlen(skb), PCI_DMA_TODEVICE);

		for (j = 0; j < frg_cnt; j++) {
			pci_unmap_page(fifo->pdev,
					txd_priv->dma_buffers[i++],
					frag->size, PCI_DMA_TODEVICE);
			frag += 1;
		}

		vxge_hw_fifo_txdl_free(fifo_hw, dtr);

		/* Updating the statistics block */
		fifo->stats.tx_frms++;
		fifo->stats.tx_bytes += skb->len;

		temp = (struct sk_buff **)&skb->cb;
		*temp = head;
		head = skb;

		pkt_cnt++;
		if (pkt_cnt > fifo->indicate_max_pkts)
			break;

	} while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
				&dtr, &t_code) == VXGE_HW_OK);

	vxge_wake_tx_queue(fifo, skb);

	if (skb_ptr)
		*skb_ptr = (void *) head;

	vxge_debug_entryexit(VXGE_TRACE,
				"%s: %s:%d  Exiting...",
				fifo->ndev->name, __func__, __LINE__);
	return VXGE_HW_OK;
}

/* select a vpath to transmit the packet */
static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb,
	int *do_lock)
{
	u16 queue_len, counter = 0;
	if (skb->protocol == htons(ETH_P_IP)) {
		struct iphdr *ip;
		struct tcphdr *th;

		ip = ip_hdr(skb);

		if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) {
			th = (struct tcphdr *)(((unsigned char *)ip) +
					ip->ihl*4);

			queue_len = vdev->no_of_vpath;
			counter = (ntohs(th->source) +
				ntohs(th->dest)) &
				vdev->vpath_selector[queue_len - 1];
			if (counter >= queue_len)
				counter = queue_len - 1;

			if (ip->protocol == IPPROTO_UDP) {
#ifdef NETIF_F_LLTX
				*do_lock = 0;
#endif
			}
		}
	}
	return counter;
}

static enum vxge_hw_status vxge_search_mac_addr_in_list(
	struct vxge_vpath *vpath, u64 del_mac)
{
	struct list_head *entry, *next;
	list_for_each_safe(entry, next, &vpath->mac_addr_list) {
		if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
			return TRUE;
	}
	return FALSE;
}

static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
{
	struct macInfo mac_info;
	u8 *mac_address = NULL;
	u64 mac_addr = 0, vpath_vector = 0;
	int vpath_idx = 0;
	enum vxge_hw_status status = VXGE_HW_OK;
	struct vxge_vpath *vpath = NULL;
	struct __vxge_hw_device *hldev;

	hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);

	mac_address = (u8 *)&mac_addr;
	memcpy(mac_address, mac_header, ETH_ALEN);

	/* Is this mac address already in the list? */
	for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
		vpath = &vdev->vpaths[vpath_idx];
		if (vxge_search_mac_addr_in_list(vpath, mac_addr))
			return vpath_idx;
	}

	memset(&mac_info, 0, sizeof(struct macInfo));
	memcpy(mac_info.macaddr, mac_header, ETH_ALEN);

	/* Any vpath has room to add mac address to its da table? */
	for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
		vpath = &vdev->vpaths[vpath_idx];
		if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
			/* Add this mac address to this vpath */
			mac_info.vpath_no = vpath_idx;
			mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
			status = vxge_add_mac_addr(vdev, &mac_info);
			if (status != VXGE_HW_OK)
				return -EPERM;
			return vpath_idx;
		}
	}

	mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
	vpath_idx = 0;
	mac_info.vpath_no = vpath_idx;
	/* Is the first vpath already selected as catch-basin ? */
	vpath = &vdev->vpaths[vpath_idx];
	if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
		/* Add this mac address to this vpath */
		if (FALSE == vxge_mac_list_add(vpath, &mac_info))
			return -EPERM;
		return vpath_idx;
	}

	/* Select first vpath as catch-basin */
	vpath_vector = vxge_mBIT(vpath->device_id);
	status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
				vxge_hw_mgmt_reg_type_mrpcim,
				0,
				(ulong)offsetof(
					struct vxge_hw_mrpcim_reg,
					rts_mgr_cbasin_cfg),
				vpath_vector);
	if (status != VXGE_HW_OK) {
		vxge_debug_tx(VXGE_ERR,
			"%s: Unable to set the vpath-%d in catch-basin mode",
			VXGE_DRIVER_NAME, vpath->device_id);
		return -EPERM;
	}

	if (FALSE == vxge_mac_list_add(vpath, &mac_info))
		return -EPERM;

	return vpath_idx;
}

/**
 * vxge_xmit
 * @skb : the socket buffer containing the Tx data.
 * @dev : device pointer.
 *
 * This function is the Tx entry point of the driver. Neterion NIC supports
 * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 * NOTE: when device cant queue the pkt, just the trans_start variable will
 * not be upadted.
*/
static int
vxge_xmit(struct sk_buff *skb, struct net_device *dev)
{
	struct vxge_fifo *fifo = NULL;
	void *dtr_priv;
	void *dtr = NULL;
	struct vxgedev *vdev = NULL;
	enum vxge_hw_status status;
	int frg_cnt, first_frg_len;
	skb_frag_t *frag;
	int i = 0, j = 0, avail;
	u64 dma_pointer;
	struct vxge_tx_priv *txdl_priv = NULL;
	struct __vxge_hw_fifo *fifo_hw;
	u32 max_mss = 0x0;
	int offload_type;
	unsigned long flags = 0;
	int vpath_no = 0;
	int do_spin_tx_lock = 1;

	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
			dev->name, __func__, __LINE__);

	/* A buffer with no data will be dropped */
	if (unlikely(skb->len <= 0)) {
		vxge_debug_tx(VXGE_ERR,
			"%s: Buffer has no data..", dev->name);
		dev_kfree_skb(skb);
		return NETDEV_TX_OK;
	}

	vdev = (struct vxgedev *)netdev_priv(dev);

	if (unlikely(!is_vxge_card_up(vdev))) {
		vxge_debug_tx(VXGE_ERR,
			"%s: vdev not initialized", dev->name);
		dev_kfree_skb(skb);
		return NETDEV_TX_OK;
	}

	if (vdev->config.addr_learn_en) {
		vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
		if (vpath_no == -EPERM) {
			vxge_debug_tx(VXGE_ERR,
				"%s: Failed to store the mac address",
				dev->name);
			dev_kfree_skb(skb);
			return NETDEV_TX_OK;
		}
	}

	if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
		vpath_no = skb_get_queue_mapping(skb);
	else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
		vpath_no = vxge_get_vpath_no(vdev, skb, &do_spin_tx_lock);

	vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);

	if (vpath_no >= vdev->no_of_vpath)
		vpath_no = 0;

	fifo = &vdev->vpaths[vpath_no].fifo;
	fifo_hw = fifo->handle;

	if (do_spin_tx_lock)
		spin_lock_irqsave(&fifo->tx_lock, flags);
	else {
		if (unlikely(!spin_trylock_irqsave(&fifo->tx_lock, flags)))
			return NETDEV_TX_LOCKED;
	}

	if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING) {
		if (netif_subqueue_stopped(dev, skb)) {
			spin_unlock_irqrestore(&fifo->tx_lock, flags);
			return NETDEV_TX_BUSY;
		}
	} else if (unlikely(fifo->queue_state == VPATH_QUEUE_STOP)) {
		if (netif_queue_stopped(dev)) {
			spin_unlock_irqrestore(&fifo->tx_lock, flags);
			return NETDEV_TX_BUSY;
		}
	}
	avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
	if (avail == 0) {
		vxge_debug_tx(VXGE_ERR,
			"%s: No free TXDs available", dev->name);
		fifo->stats.txd_not_free++;
		vxge_stop_tx_queue(fifo);
		goto _exit2;
	}

	status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
	if (unlikely(status != VXGE_HW_OK)) {
		vxge_debug_tx(VXGE_ERR,
		   "%s: Out of descriptors .", dev->name);
		fifo->stats.txd_out_of_desc++;
		vxge_stop_tx_queue(fifo);
		goto _exit2;
	}

	vxge_debug_tx(VXGE_TRACE,
		"%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
		dev->name, __func__, __LINE__,
		fifo_hw, dtr, dtr_priv);

	if (vdev->vlgrp && vlan_tx_tag_present(skb)) {
		u16 vlan_tag = vlan_tx_tag_get(skb);
		vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
	}

	first_frg_len = skb_headlen(skb);

	dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
				PCI_DMA_TODEVICE);

	if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
		vxge_hw_fifo_txdl_free(fifo_hw, dtr);
		vxge_stop_tx_queue(fifo);
		fifo->stats.pci_map_fail++;
		goto _exit2;
	}

	txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
	txdl_priv->skb = skb;
	txdl_priv->dma_buffers[j] = dma_pointer;

	frg_cnt = skb_shinfo(skb)->nr_frags;
	vxge_debug_tx(VXGE_TRACE,
			"%s: %s:%d skb = %p txdl_priv = %p "
			"frag_cnt = %d dma_pointer = 0x%llx", dev->name,
			__func__, __LINE__, skb, txdl_priv,
			frg_cnt, (unsigned long long)dma_pointer);

	vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
		first_frg_len);

	frag = &skb_shinfo(skb)->frags[0];
	for (i = 0; i < frg_cnt; i++) {
		/* ignore 0 length fragment */
		if (!frag->size)
			continue;

		dma_pointer =
			(u64)pci_map_page(fifo->pdev, frag->page,
				frag->page_offset, frag->size,
				PCI_DMA_TODEVICE);

		if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer)))
			goto _exit0;
		vxge_debug_tx(VXGE_TRACE,
			"%s: %s:%d frag = %d dma_pointer = 0x%llx",
				dev->name, __func__, __LINE__, i,
				(unsigned long long)dma_pointer);

		txdl_priv->dma_buffers[j] = dma_pointer;
		vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
					frag->size);
		frag += 1;
	}

	offload_type = vxge_offload_type(skb);

	if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {

		int mss = vxge_tcp_mss(skb);
		if (mss) {
			max_mss = dev->mtu + ETH_HLEN -
				VXGE_HW_TCPIP_HEADER_MAX_SIZE;
			if (mss > max_mss)
				mss = max_mss;
			vxge_debug_tx(VXGE_TRACE,
				"%s: %s:%d mss = %d",
				dev->name, __func__, __LINE__, mss);
			vxge_hw_fifo_txdl_mss_set(dtr, mss);
		} else {
			vxge_assert(skb->len <=
				dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
			vxge_assert(0);
			goto _exit1;
		}
	}

	if (skb->ip_summed == CHECKSUM_PARTIAL)
		vxge_hw_fifo_txdl_cksum_set_bits(dtr,
					VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
					VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
					VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);

	vxge_hw_fifo_txdl_post(fifo_hw, dtr);
#ifdef NETIF_F_LLTX
	dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
#endif
	spin_unlock_irqrestore(&fifo->tx_lock, flags);

	VXGE_COMPLETE_VPATH_TX(fifo);
	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
		dev->name, __func__, __LINE__);
	return 0;

_exit0:
	vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);

_exit1:
	j = 0;
	frag = &skb_shinfo(skb)->frags[0];

	pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
			skb_headlen(skb), PCI_DMA_TODEVICE);

	for (; j < i; j++) {
		pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
			frag->size, PCI_DMA_TODEVICE);
		frag += 1;
	}

	vxge_hw_fifo_txdl_free(fifo_hw, dtr);
_exit2:
	dev_kfree_skb(skb);
	spin_unlock_irqrestore(&fifo->tx_lock, flags);
	VXGE_COMPLETE_VPATH_TX(fifo);

	return 0;
}

/*
 * vxge_rx_term
 *
 * Function will be called by hw function to abort all outstanding receive
 * descriptors.
 */
static void
vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
{
	struct vxge_ring *ring = (struct vxge_ring *)userdata;
	struct vxge_rx_priv *rx_priv =
		vxge_hw_ring_rxd_private_get(dtrh);

	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
			ring->ndev->name, __func__, __LINE__);
	if (state != VXGE_HW_RXD_STATE_POSTED)
		return;

	pci_unmap_single(ring->pdev, rx_priv->data_dma,
		rx_priv->data_size, PCI_DMA_FROMDEVICE);

	dev_kfree_skb(rx_priv->skb);

	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d  Exiting...",
		ring->ndev->name, __func__, __LINE__);
}

/*
 * vxge_tx_term
 *
 * Function will be called to abort all outstanding tx descriptors
 */
static void
vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
{
	struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
	skb_frag_t *frag;
	int i = 0, j, frg_cnt;
	struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
	struct sk_buff *skb = txd_priv->skb;

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);

	if (state != VXGE_HW_TXDL_STATE_POSTED)
		return;

	/* check skb validity */
	vxge_assert(skb);
	frg_cnt = skb_shinfo(skb)->nr_frags;
	frag = &skb_shinfo(skb)->frags[0];

	/*  for unfragmented skb */
	pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
		skb_headlen(skb), PCI_DMA_TODEVICE);

	for (j = 0; j < frg_cnt; j++) {
		pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
			       frag->size, PCI_DMA_TODEVICE);
		frag += 1;
	}

	dev_kfree_skb(skb);

	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d  Exiting...", __func__, __LINE__);
}

/**
 * vxge_set_multicast
 * @dev: pointer to the device structure
 *
 * Entry point for multicast address enable/disable
 * This function is a driver entry point which gets called by the kernel
 * whenever multicast addresses must be enabled/disabled. This also gets
 * called to set/reset promiscuous mode. Depending on the deivce flag, we
 * determine, if multicast address must be enabled or if promiscuous mode
 * is to be disabled etc.
 */
static void vxge_set_multicast(struct net_device *dev)
{
	struct dev_mc_list *mclist;
	struct vxgedev *vdev;
	int i, mcast_cnt = 0;
	struct __vxge_hw_device  *hldev;
	enum vxge_hw_status status = VXGE_HW_OK;
	struct macInfo mac_info;
	int vpath_idx = 0;
	struct vxge_mac_addrs *mac_entry;
	struct list_head *list_head;
	struct list_head *entry, *next;
	u8 *mac_address = NULL;

	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d", __func__, __LINE__);

	vdev = (struct vxgedev *)netdev_priv(dev);
	hldev = (struct __vxge_hw_device  *)vdev->devh;

	if (unlikely(!is_vxge_card_up(vdev)))
		return;

	if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
		for (i = 0; i < vdev->no_of_vpath; i++) {
			vxge_assert(vdev->vpaths[i].is_open);
			status = vxge_hw_vpath_mcast_enable(
						vdev->vpaths[i].handle);
			vdev->all_multi_flg = 1;
		}
	} else if ((dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
		for (i = 0; i < vdev->no_of_vpath; i++) {
			vxge_assert(vdev->vpaths[i].is_open);
			status = vxge_hw_vpath_mcast_disable(
						vdev->vpaths[i].handle);
			vdev->all_multi_flg = 1;
		}
	}

	if (status != VXGE_HW_OK)
		vxge_debug_init(VXGE_ERR,
			"failed to %s multicast, status %d",
			dev->flags & IFF_ALLMULTI ?
			"enable" : "disable", status);

	if (!vdev->config.addr_learn_en) {
		if (dev->flags & IFF_PROMISC) {
			for (i = 0; i < vdev->no_of_vpath; i++) {
				vxge_assert(vdev->vpaths[i].is_open);
				status = vxge_hw_vpath_promisc_enable(
						vdev->vpaths[i].handle);
			}
		} else {
			for (i = 0; i < vdev->no_of_vpath; i++) {
				vxge_assert(vdev->vpaths[i].is_open);
				status = vxge_hw_vpath_promisc_disable(
						vdev->vpaths[i].handle);
			}
		}
	}

	memset(&mac_info, 0, sizeof(struct macInfo));
	/* Update individual M_CAST address list */
	if ((!vdev->all_multi_flg) && dev->mc_count) {

		mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
		list_head = &vdev->vpaths[0].mac_addr_list;
		if ((dev->mc_count +
			(vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
				vdev->vpaths[0].max_mac_addr_cnt)
			goto _set_all_mcast;

		/* Delete previous MC's */
		for (i = 0; i < mcast_cnt; i++) {
			if (!list_empty(list_head))
				mac_entry = (struct vxge_mac_addrs *)
					list_first_entry(list_head,
						struct vxge_mac_addrs,
						item);

			list_for_each_safe(entry, next, list_head) {

				mac_entry = (struct vxge_mac_addrs *) entry;
				/* Copy the mac address to delete */
				mac_address = (u8 *)&mac_entry->macaddr;
				memcpy(mac_info.macaddr, mac_address, ETH_ALEN);

				/* Is this a multicast address */
				if (0x01 & mac_info.macaddr[0]) {
					for (vpath_idx = 0; vpath_idx <
						vdev->no_of_vpath;
						vpath_idx++) {
						mac_info.vpath_no = vpath_idx;
						status = vxge_del_mac_addr(
								vdev,
								&mac_info);
					}
				}
			}
		}

		/* Add new ones */
		for (i = 0, mclist = dev->mc_list; i < dev->mc_count;
			i++, mclist = mclist->next) {

			memcpy(mac_info.macaddr, mclist->dmi_addr, ETH_ALEN);
			for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
					vpath_idx++) {
				mac_info.vpath_no = vpath_idx;
				mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
				status = vxge_add_mac_addr(vdev, &mac_info);
				if (status != VXGE_HW_OK) {
					vxge_debug_init(VXGE_ERR,
						"%s:%d Setting individual"
						"multicast address failed",
						__func__, __LINE__);
					goto _set_all_mcast;
				}
			}
		}

		return;
_set_all_mcast:
		mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
		/* Delete previous MC's */
		for (i = 0; i < mcast_cnt; i++) {

			list_for_each_safe(entry, next, list_head) {

				mac_entry = (struct vxge_mac_addrs *) entry;
				/* Copy the mac address to delete */
				mac_address = (u8 *)&mac_entry->macaddr;
				memcpy(mac_info.macaddr, mac_address, ETH_ALEN);

				/* Is this a multicast address */
				if (0x01 & mac_info.macaddr[0])
					break;
			}

			for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
					vpath_idx++) {
				mac_info.vpath_no = vpath_idx;
				status = vxge_del_mac_addr(vdev, &mac_info);
			}
		}

		/* Enable all multicast */
		for (i = 0; i < vdev->no_of_vpath; i++) {
			vxge_assert(vdev->vpaths[i].is_open);
			status = vxge_hw_vpath_mcast_enable(
						vdev->vpaths[i].handle);
			if (status != VXGE_HW_OK) {
				vxge_debug_init(VXGE_ERR,
					"%s:%d Enabling all multicasts failed",
					 __func__, __LINE__);
			}
			vdev->all_multi_flg = 1;
		}
		dev->flags |= IFF_ALLMULTI;
	}

	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d  Exiting...", __func__, __LINE__);
}

/**
 * vxge_set_mac_addr
 * @dev: pointer to the device structure
 *
 * Update entry "0" (default MAC addr)
 */
static int vxge_set_mac_addr(struct net_device *dev, void *p)
{
	struct sockaddr *addr = p;
	struct vxgedev *vdev;
	struct __vxge_hw_device  *hldev;
	enum vxge_hw_status status = VXGE_HW_OK;
	struct macInfo mac_info_new, mac_info_old;
	int vpath_idx = 0;

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);

	vdev = (struct vxgedev *)netdev_priv(dev);
	hldev = vdev->devh;

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

	memset(&mac_info_new, 0, sizeof(struct macInfo));
	memset(&mac_info_old, 0, sizeof(struct macInfo));

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
		__func__, __LINE__);

	/* Get the old address */
	memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);

	/* Copy the new address */
	memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);

	/* First delete the old mac address from all the vpaths
	as we can't specify the index while adding new mac address */
	for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
		struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
		if (!vpath->is_open) {
			/* This can happen when this interface is added/removed
			to the bonding interface. Delete this station address
			from the linked list */
			vxge_mac_list_del(vpath, &mac_info_old);

			/* Add this new address to the linked list
			for later restoring */
			vxge_mac_list_add(vpath, &mac_info_new);

			continue;
		}
		/* Delete the station address */
		mac_info_old.vpath_no = vpath_idx;
		status = vxge_del_mac_addr(vdev, &mac_info_old);
	}

	if (unlikely(!is_vxge_card_up(vdev))) {
		memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
		return VXGE_HW_OK;
	}

	/* Set this mac address to all the vpaths */
	for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
		mac_info_new.vpath_no = vpath_idx;
		mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
		status = vxge_add_mac_addr(vdev, &mac_info_new);
		if (status != VXGE_HW_OK)
			return -EINVAL;
	}

	memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);

	return status;
}

/*
 * vxge_vpath_intr_enable
 * @vdev: pointer to vdev
 * @vp_id: vpath for which to enable the interrupts
 *
 * Enables the interrupts for the vpath
*/
void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
{
	struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
	int msix_id, alarm_msix_id;
	int tim_msix_id[4] = {[0 ...3] = 0};

	vxge_hw_vpath_intr_enable(vpath->handle);

	if (vdev->config.intr_type == INTA)
		vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
	else {
		msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
		alarm_msix_id =
			VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;

		tim_msix_id[0] = msix_id;
		tim_msix_id[1] = msix_id + 1;
		vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
			alarm_msix_id);

		vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
		vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);

		/* enable the alarm vector */
		vxge_hw_vpath_msix_unmask(vpath->handle, alarm_msix_id);
	}
}

/*
 * vxge_vpath_intr_disable
 * @vdev: pointer to vdev
 * @vp_id: vpath for which to disable the interrupts
 *
 * Disables the interrupts for the vpath
*/
void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
{
	struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
	int msix_id;

	vxge_hw_vpath_intr_disable(vpath->handle);

	if (vdev->config.intr_type == INTA)
		vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
	else {
		msix_id = vp_id * VXGE_HW_VPATH_MSIX_ACTIVE;
		vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
		vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);

		/* disable the alarm vector */
		msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
		vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
	}
}

/*
 * vxge_reset_vpath
 * @vdev: pointer to vdev
 * @vp_id: vpath to reset
 *
 * Resets the vpath
*/
static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
{
	enum vxge_hw_status status = VXGE_HW_OK;
	int ret = 0;

	/* check if device is down already */
	if (unlikely(!is_vxge_card_up(vdev)))
		return 0;

	/* is device reset already scheduled */
	if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
		return 0;

	if (vdev->vpaths[vp_id].handle) {
		if (vxge_hw_vpath_reset(vdev->vpaths[vp_id].handle)
				== VXGE_HW_OK) {
			if (is_vxge_card_up(vdev) &&
				vxge_hw_vpath_recover_from_reset(
					vdev->vpaths[vp_id].handle)
					!= VXGE_HW_OK) {
				vxge_debug_init(VXGE_ERR,
					"vxge_hw_vpath_recover_from_reset"
					"failed for vpath:%d", vp_id);
				return status;
			}
		} else {
			vxge_debug_init(VXGE_ERR,
				"vxge_hw_vpath_reset failed for"
				"vpath:%d", vp_id);
				return status;
		}
	} else
		return VXGE_HW_FAIL;

	vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
	vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);

	/* Enable all broadcast */
	vxge_hw_vpath_bcast_enable(vdev->vpaths[vp_id].handle);

	/* Enable the interrupts */
	vxge_vpath_intr_enable(vdev, vp_id);

	smp_wmb();

	/* Enable the flow of traffic through the vpath */
	vxge_hw_vpath_enable(vdev->vpaths[vp_id].handle);

	smp_wmb();
	vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[vp_id].handle);
	vdev->vpaths[vp_id].ring.last_status = VXGE_HW_OK;

	/* Vpath reset done */
	clear_bit(vp_id, &vdev->vp_reset);

	/* Start the vpath queue */
	vxge_wake_tx_queue(&vdev->vpaths[vp_id].fifo, NULL);

	return ret;
}

static int do_vxge_reset(struct vxgedev *vdev, int event)
{
	enum vxge_hw_status status;
	int ret = 0, vp_id, i;

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);

	if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
		/* check if device is down already */
		if (unlikely(!is_vxge_card_up(vdev)))
			return 0;

		/* is reset already scheduled */
		if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
			return 0;
	}

	if (event == VXGE_LL_FULL_RESET) {
		/* wait for all the vpath reset to complete */
		for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
			while (test_bit(vp_id, &vdev->vp_reset))
				msleep(50);
		}

		/* if execution mode is set to debug, don't reset the adapter */
		if (unlikely(vdev->exec_mode)) {
			vxge_debug_init(VXGE_ERR,
				"%s: execution mode is debug, returning..",
				vdev->ndev->name);
		clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
		vxge_stop_all_tx_queue(vdev);
		return 0;
		}
	}

	if (event == VXGE_LL_FULL_RESET) {
		vxge_hw_device_intr_disable(vdev->devh);

		switch (vdev->cric_err_event) {
		case VXGE_HW_EVENT_UNKNOWN:
			vxge_stop_all_tx_queue(vdev);
			vxge_debug_init(VXGE_ERR,
				"fatal: %s: Disabling device due to"
				"unknown error",
				vdev->ndev->name);
			ret = -EPERM;
			goto out;
		case VXGE_HW_EVENT_RESET_START:
			break;
		case VXGE_HW_EVENT_RESET_COMPLETE:
		case VXGE_HW_EVENT_LINK_DOWN:
		case VXGE_HW_EVENT_LINK_UP:
		case VXGE_HW_EVENT_ALARM_CLEARED:
		case VXGE_HW_EVENT_ECCERR:
		case VXGE_HW_EVENT_MRPCIM_ECCERR:
			ret = -EPERM;
			goto out;
		case VXGE_HW_EVENT_FIFO_ERR:
		case VXGE_HW_EVENT_VPATH_ERR:
			break;
		case VXGE_HW_EVENT_CRITICAL_ERR:
			vxge_stop_all_tx_queue(vdev);
			vxge_debug_init(VXGE_ERR,
				"fatal: %s: Disabling device due to"
				"serious error",
				vdev->ndev->name);
			/* SOP or device reset required */
			/* This event is not currently used */
			ret = -EPERM;
			goto out;
		case VXGE_HW_EVENT_SERR:
			vxge_stop_all_tx_queue(vdev);
			vxge_debug_init(VXGE_ERR,
				"fatal: %s: Disabling device due to"
				"serious error",
				vdev->ndev->name);
			ret = -EPERM;
			goto out;
		case VXGE_HW_EVENT_SRPCIM_SERR:
		case VXGE_HW_EVENT_MRPCIM_SERR:
			ret = -EPERM;
			goto out;
		case VXGE_HW_EVENT_SLOT_FREEZE:
			vxge_stop_all_tx_queue(vdev);
			vxge_debug_init(VXGE_ERR,
				"fatal: %s: Disabling device due to"
				"slot freeze",
				vdev->ndev->name);
			ret = -EPERM;
			goto out;
		default:
			break;

		}
	}

	if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
		vxge_stop_all_tx_queue(vdev);

	if (event == VXGE_LL_FULL_RESET) {
		status = vxge_reset_all_vpaths(vdev);
		if (status != VXGE_HW_OK) {
			vxge_debug_init(VXGE_ERR,
				"fatal: %s: can not reset vpaths",
				vdev->ndev->name);
			ret = -EPERM;
			goto out;
		}
	}

	if (event == VXGE_LL_COMPL_RESET) {
		for (i = 0; i < vdev->no_of_vpath; i++)
			if (vdev->vpaths[i].handle) {
				if (vxge_hw_vpath_recover_from_reset(
					vdev->vpaths[i].handle)
						!= VXGE_HW_OK) {
					vxge_debug_init(VXGE_ERR,
						"vxge_hw_vpath_recover_"
						"from_reset failed for vpath: "
						"%d", i);
					ret = -EPERM;
					goto out;
				}
				} else {
					vxge_debug_init(VXGE_ERR,
					"vxge_hw_vpath_reset failed for "
						"vpath:%d", i);
					ret = -EPERM;
					goto out;
				}
	}

	if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
		/* Reprogram the DA table with populated mac addresses */
		for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
			vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
			vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
		}

		/* enable vpath interrupts */
		for (i = 0; i < vdev->no_of_vpath; i++)
			vxge_vpath_intr_enable(vdev, i);

		vxge_hw_device_intr_enable(vdev->devh);

		smp_wmb();

		/* Indicate card up */
		set_bit(__VXGE_STATE_CARD_UP, &vdev->state);

		/* Get the traffic to flow through the vpaths */
		for (i = 0; i < vdev->no_of_vpath; i++) {
			vxge_hw_vpath_enable(vdev->vpaths[i].handle);
			smp_wmb();
			vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
		}

		vxge_wake_all_tx_queue(vdev);
	}

out:
	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d  Exiting...", __func__, __LINE__);

	/* Indicate reset done */
	if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
		clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
	return ret;
}

/*
 * vxge_reset
 * @vdev: pointer to ll device
 *
 * driver may reset the chip on events of serr, eccerr, etc
 */
int vxge_reset(struct vxgedev *vdev)
{
	do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
	return 0;
}

/**
 * vxge_poll - Receive handler when Receive Polling is used.
 * @dev: pointer to the device structure.
 * @budget: Number of packets budgeted to be processed in this iteration.
 *
 * This function comes into picture only if Receive side is being handled
 * through polling (called NAPI in linux). It mostly does what the normal
 * Rx interrupt handler does in terms of descriptor and packet processing
 * but not in an interrupt context. Also it will process a specified number
 * of packets at most in one iteration. This value is passed down by the
 * kernel as the function argument 'budget'.
 */
static int vxge_poll_msix(struct napi_struct *napi, int budget)
{
	struct vxge_ring *ring =
		container_of(napi, struct vxge_ring, napi);
	int budget_org = budget;
	ring->budget = budget;

	vxge_hw_vpath_poll_rx(ring->handle);

	if (ring->pkts_processed < budget_org) {
		napi_complete(napi);
		/* Re enable the Rx interrupts for the vpath */
		vxge_hw_channel_msix_unmask(
				(struct __vxge_hw_channel *)ring->handle,
				ring->rx_vector_no);
	}

	return ring->pkts_processed;
}

static int vxge_poll_inta(struct napi_struct *napi, int budget)
{
	struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
	int pkts_processed = 0;
	int i;
	int budget_org = budget;
	struct vxge_ring *ring;

	struct __vxge_hw_device  *hldev = (struct __vxge_hw_device *)
		pci_get_drvdata(vdev->pdev);

	for (i = 0; i < vdev->no_of_vpath; i++) {
		ring = &vdev->vpaths[i].ring;
		ring->budget = budget;
		vxge_hw_vpath_poll_rx(ring->handle);
		pkts_processed += ring->pkts_processed;
		budget -= ring->pkts_processed;
		if (budget <= 0)
			break;
	}

	VXGE_COMPLETE_ALL_TX(vdev);

	if (pkts_processed < budget_org) {
		napi_complete(napi);
		/* Re enable the Rx interrupts for the ring */
		vxge_hw_device_unmask_all(hldev);
		vxge_hw_device_flush_io(hldev);
	}

	return pkts_processed;
}

#ifdef CONFIG_NET_POLL_CONTROLLER
/**
 * vxge_netpoll - netpoll event handler entry point
 * @dev : pointer to the device structure.
 * Description:
 *      This function will be called by upper layer to check for events on the
 * interface in situations where interrupts are disabled. It is used for
 * specific in-kernel networking tasks, such as remote consoles and kernel
 * debugging over the network (example netdump in RedHat).
 */
static void vxge_netpoll(struct net_device *dev)
{
	struct __vxge_hw_device  *hldev;
	struct vxgedev *vdev;

	vdev = (struct vxgedev *)netdev_priv(dev);
	hldev = (struct __vxge_hw_device  *)pci_get_drvdata(vdev->pdev);

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);

	if (pci_channel_offline(vdev->pdev))
		return;

	disable_irq(dev->irq);
	vxge_hw_device_clear_tx_rx(hldev);

	vxge_hw_device_clear_tx_rx(hldev);
	VXGE_COMPLETE_ALL_RX(vdev);
	VXGE_COMPLETE_ALL_TX(vdev);

	enable_irq(dev->irq);

	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d  Exiting...", __func__, __LINE__);
	return;
}
#endif

/* RTH configuration */
static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
{
	enum vxge_hw_status status = VXGE_HW_OK;
	struct vxge_hw_rth_hash_types hash_types;
	u8 itable[256] = {0}; /* indirection table */
	u8 mtable[256] = {0}; /* CPU to vpath mapping  */
	int index;

	/*
	 * Filling
	 * 	- itable with bucket numbers
	 * 	- mtable with bucket-to-vpath mapping
	 */
	for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
		itable[index] = index;
		mtable[index] = index % vdev->no_of_vpath;
	}

	/* Fill RTH hash types */
	hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
	hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
	hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
	hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
	hash_types.hash_type_tcpipv6ex_en =
					vdev->config.rth_hash_type_tcpipv6ex;
	hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;

	/* set indirection table, bucket-to-vpath mapping */
	status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
						vdev->no_of_vpath,
						mtable, itable,
						vdev->config.rth_bkt_sz);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
			"RTH indirection table configuration failed "
			"for vpath:%d", vdev->vpaths[0].device_id);
		return status;
	}

	/*
	* Because the itable_set() method uses the active_table field
	* for the target virtual path the RTH config should be updated
	* for all VPATHs. The h/w only uses the lowest numbered VPATH
	* when steering frames.
	*/
	 for (index = 0; index < vdev->no_of_vpath; index++) {
		status = vxge_hw_vpath_rts_rth_set(
				vdev->vpaths[index].handle,
				vdev->config.rth_algorithm,
				&hash_types,
				vdev->config.rth_bkt_sz);

		 if (status != VXGE_HW_OK) {
			vxge_debug_init(VXGE_ERR,
				"RTH configuration failed for vpath:%d",
				vdev->vpaths[index].device_id);
			return status;
		 }
	 }

	return status;
}

int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
{
	struct vxge_mac_addrs *new_mac_entry;
	u8 *mac_address = NULL;

	if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
		return TRUE;

	new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
	if (!new_mac_entry) {
		vxge_debug_mem(VXGE_ERR,
			"%s: memory allocation failed",
			VXGE_DRIVER_NAME);
		return FALSE;
	}

	list_add(&new_mac_entry->item, &vpath->mac_addr_list);

	/* Copy the new mac address to the list */
	mac_address = (u8 *)&new_mac_entry->macaddr;
	memcpy(mac_address, mac->macaddr, ETH_ALEN);

	new_mac_entry->state = mac->state;
	vpath->mac_addr_cnt++;

	/* Is this a multicast address */
	if (0x01 & mac->macaddr[0])
		vpath->mcast_addr_cnt++;

	return TRUE;
}

/* Add a mac address to DA table */
enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
{
	enum vxge_hw_status status = VXGE_HW_OK;
	struct vxge_vpath *vpath;
	enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;

	if (0x01 & mac->macaddr[0]) /* multicast address */
		duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
	else
		duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;

	vpath = &vdev->vpaths[mac->vpath_no];
	status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
						mac->macmask, duplicate_mode);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
			"DA config add entry failed for vpath:%d",
			vpath->device_id);
	} else
		if (FALSE == vxge_mac_list_add(vpath, mac))
			status = -EPERM;

	return status;
}

int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
{
	struct list_head *entry, *next;
	u64 del_mac = 0;
	u8 *mac_address = (u8 *) (&del_mac);

	/* Copy the mac address to delete from the list */
	memcpy(mac_address, mac->macaddr, ETH_ALEN);

	list_for_each_safe(entry, next, &vpath->mac_addr_list) {
		if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
			list_del(entry);
			kfree((struct vxge_mac_addrs *)entry);
			vpath->mac_addr_cnt--;

			/* Is this a multicast address */
			if (0x01 & mac->macaddr[0])
				vpath->mcast_addr_cnt--;
			return TRUE;
		}
	}

	return FALSE;
}
/* delete a mac address from DA table */
enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
{
	enum vxge_hw_status status = VXGE_HW_OK;
	struct vxge_vpath *vpath;

	vpath = &vdev->vpaths[mac->vpath_no];
	status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
						mac->macmask);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
			"DA config delete entry failed for vpath:%d",
			vpath->device_id);
	} else
		vxge_mac_list_del(vpath, mac);
	return status;
}

/* list all mac addresses from DA table */
enum vxge_hw_status
static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath,
					struct macInfo *mac)
{
	enum vxge_hw_status status = VXGE_HW_OK;
	unsigned char macmask[ETH_ALEN];
	unsigned char macaddr[ETH_ALEN];

	status = vxge_hw_vpath_mac_addr_get(vpath->handle,
				macaddr, macmask);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
			"DA config list entry failed for vpath:%d",
			vpath->device_id);
		return status;
	}

	while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {

		status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
				macaddr, macmask);
		if (status != VXGE_HW_OK)
			break;
	}

	return status;
}

/* Store all vlan ids from the list to the vid table */
enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
{
	enum vxge_hw_status status = VXGE_HW_OK;
	struct vxgedev *vdev = vpath->vdev;
	u16 vid;

	if (vdev->vlgrp && vpath->is_open) {

		for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
			if (!vlan_group_get_device(vdev->vlgrp, vid))
				continue;
			/* Add these vlan to the vid table */
			status = vxge_hw_vpath_vid_add(vpath->handle, vid);
		}
	}

	return status;
}

/* Store all mac addresses from the list to the DA table */
enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
{
	enum vxge_hw_status status = VXGE_HW_OK;
	struct macInfo mac_info;
	u8 *mac_address = NULL;
	struct list_head *entry, *next;

	memset(&mac_info, 0, sizeof(struct macInfo));

	if (vpath->is_open) {

		list_for_each_safe(entry, next, &vpath->mac_addr_list) {
			mac_address =
				(u8 *)&
				((struct vxge_mac_addrs *)entry)->macaddr;
			memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
			((struct vxge_mac_addrs *)entry)->state =
				VXGE_LL_MAC_ADDR_IN_DA_TABLE;
			/* does this mac address already exist in da table? */
			status = vxge_search_mac_addr_in_da_table(vpath,
				&mac_info);
			if (status != VXGE_HW_OK) {
				/* Add this mac address to the DA table */
				status = vxge_hw_vpath_mac_addr_add(
					vpath->handle, mac_info.macaddr,
					mac_info.macmask,
				    VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
				if (status != VXGE_HW_OK) {
					vxge_debug_init(VXGE_ERR,
					    "DA add entry failed for vpath:%d",
					    vpath->device_id);
					((struct vxge_mac_addrs *)entry)->state
						= VXGE_LL_MAC_ADDR_IN_LIST;
				}
			}
		}
	}

	return status;
}

/* reset vpaths */
enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
{
	int i;
	enum vxge_hw_status status = VXGE_HW_OK;

	for (i = 0; i < vdev->no_of_vpath; i++)
		if (vdev->vpaths[i].handle) {
			if (vxge_hw_vpath_reset(vdev->vpaths[i].handle)
					== VXGE_HW_OK) {
				if (is_vxge_card_up(vdev) &&
					vxge_hw_vpath_recover_from_reset(
						vdev->vpaths[i].handle)
						!= VXGE_HW_OK) {
					vxge_debug_init(VXGE_ERR,
						"vxge_hw_vpath_recover_"
						"from_reset failed for vpath: "
						"%d", i);
					return status;
				}
			} else {
				vxge_debug_init(VXGE_ERR,
					"vxge_hw_vpath_reset failed for "
					"vpath:%d", i);
					return status;
			}
		}
	return status;
}

/* close vpaths */
void vxge_close_vpaths(struct vxgedev *vdev, int index)
{
	int i;
	for (i = index; i < vdev->no_of_vpath; i++) {
		if (vdev->vpaths[i].handle && vdev->vpaths[i].is_open) {
			vxge_hw_vpath_close(vdev->vpaths[i].handle);
			vdev->stats.vpaths_open--;
		}
		vdev->vpaths[i].is_open = 0;
		vdev->vpaths[i].handle  = NULL;
	}
}

/* open vpaths */
int vxge_open_vpaths(struct vxgedev *vdev)
{
	enum vxge_hw_status status;
	int i;
	u32 vp_id = 0;
	struct vxge_hw_vpath_attr attr;

	for (i = 0; i < vdev->no_of_vpath; i++) {
		vxge_assert(vdev->vpaths[i].is_configured);
		attr.vp_id = vdev->vpaths[i].device_id;
		attr.fifo_attr.callback = vxge_xmit_compl;
		attr.fifo_attr.txdl_term = vxge_tx_term;
		attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
		attr.fifo_attr.userdata = (void *)&vdev->vpaths[i].fifo;

		attr.ring_attr.callback = vxge_rx_1b_compl;
		attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
		attr.ring_attr.rxd_term = vxge_rx_term;
		attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
		attr.ring_attr.userdata = (void *)&vdev->vpaths[i].ring;

		vdev->vpaths[i].ring.ndev = vdev->ndev;
		vdev->vpaths[i].ring.pdev = vdev->pdev;
		status = vxge_hw_vpath_open(vdev->devh, &attr,
				&(vdev->vpaths[i].handle));
		if (status == VXGE_HW_OK) {
			vdev->vpaths[i].fifo.handle =
			    (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
			vdev->vpaths[i].ring.handle =
			    (struct __vxge_hw_ring *)attr.ring_attr.userdata;
			vdev->vpaths[i].fifo.tx_steering_type =
				vdev->config.tx_steering_type;
			vdev->vpaths[i].fifo.ndev = vdev->ndev;
			vdev->vpaths[i].fifo.pdev = vdev->pdev;
			vdev->vpaths[i].fifo.indicate_max_pkts =
				vdev->config.fifo_indicate_max_pkts;
			vdev->vpaths[i].ring.rx_vector_no = 0;
			vdev->vpaths[i].ring.rx_csum = vdev->rx_csum;
			vdev->vpaths[i].is_open = 1;
			vdev->vp_handles[i] = vdev->vpaths[i].handle;
			vdev->vpaths[i].ring.gro_enable =
						vdev->config.gro_enable;
			vdev->vpaths[i].ring.vlan_tag_strip =
						vdev->vlan_tag_strip;
			vdev->stats.vpaths_open++;
		} else {
			vdev->stats.vpath_open_fail++;
			vxge_debug_init(VXGE_ERR,
				"%s: vpath: %d failed to open "
				"with status: %d",
			    vdev->ndev->name, vdev->vpaths[i].device_id,
				status);
			vxge_close_vpaths(vdev, 0);
			return -EPERM;
		}

		vp_id =
		  ((struct __vxge_hw_vpath_handle *)vdev->vpaths[i].handle)->
		  vpath->vp_id;
		vdev->vpaths_deployed |= vxge_mBIT(vp_id);
	}
	return VXGE_HW_OK;
}

/*
 *  vxge_isr_napi
 *  @irq: the irq of the device.
 *  @dev_id: a void pointer to the hldev structure of the Titan device
 *  @ptregs: pointer to the registers pushed on the stack.
 *
 *  This function is the ISR handler of the device when napi is enabled. It
 *  identifies the reason for the interrupt and calls the relevant service
 *  routines.
 */
static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
{
	struct __vxge_hw_device  *hldev = (struct __vxge_hw_device  *)dev_id;
	struct vxgedev *vdev;
	struct net_device *dev;
	u64 reason;
	enum vxge_hw_status status;

	vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);

	dev = hldev->ndev;
	vdev = netdev_priv(dev);

	if (pci_channel_offline(vdev->pdev))
		return IRQ_NONE;

	if (unlikely(!is_vxge_card_up(vdev)))
		return IRQ_NONE;

	status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode,
			&reason);
	if (status == VXGE_HW_OK) {
		vxge_hw_device_mask_all(hldev);

		if (reason &
			VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
			vdev->vpaths_deployed >>
			(64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {

			vxge_hw_device_clear_tx_rx(hldev);
			napi_schedule(&vdev->napi);
			vxge_debug_intr(VXGE_TRACE,
				"%s:%d  Exiting...", __func__, __LINE__);
			return IRQ_HANDLED;
		} else
			vxge_hw_device_unmask_all(hldev);
	} else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
		(status == VXGE_HW_ERR_CRITICAL) ||
		(status == VXGE_HW_ERR_FIFO))) {
		vxge_hw_device_mask_all(hldev);
		vxge_hw_device_flush_io(hldev);
		return IRQ_HANDLED;
	} else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
		return IRQ_HANDLED;

	vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
	return IRQ_NONE;
}

#ifdef CONFIG_PCI_MSI

static irqreturn_t
vxge_tx_msix_handle(int irq, void *dev_id)
{
	struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;

	VXGE_COMPLETE_VPATH_TX(fifo);

	return IRQ_HANDLED;
}

static irqreturn_t
vxge_rx_msix_napi_handle(int irq, void *dev_id)
{
	struct vxge_ring *ring = (struct vxge_ring *)dev_id;

	/* MSIX_IDX for Rx is 1 */
	vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
					ring->rx_vector_no);

	napi_schedule(&ring->napi);
	return IRQ_HANDLED;
}

static irqreturn_t
vxge_alarm_msix_handle(int irq, void *dev_id)
{
	int i;
	enum vxge_hw_status status;
	struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
	struct vxgedev *vdev = vpath->vdev;
	int alarm_msix_id =
		VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;

	for (i = 0; i < vdev->no_of_vpath; i++) {
		vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle,
			alarm_msix_id);

		status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
			vdev->exec_mode);
		if (status == VXGE_HW_OK) {

			vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
				alarm_msix_id);
			continue;
		}
		vxge_debug_intr(VXGE_ERR,
			"%s: vxge_hw_vpath_alarm_process failed %x ",
			VXGE_DRIVER_NAME, status);
	}
	return IRQ_HANDLED;
}

static int vxge_alloc_msix(struct vxgedev *vdev)
{
	int j, i, ret = 0;
	int intr_cnt = 0;
	int alarm_msix_id = 0, msix_intr_vect = 0;
	vdev->intr_cnt = 0;

	/* Tx/Rx MSIX Vectors count */
	vdev->intr_cnt = vdev->no_of_vpath * 2;

	/* Alarm MSIX Vectors count */
	vdev->intr_cnt++;

	intr_cnt = (vdev->max_vpath_supported * 2) + 1;
	vdev->entries = kzalloc(intr_cnt * sizeof(struct msix_entry),
						GFP_KERNEL);
	if (!vdev->entries) {
		vxge_debug_init(VXGE_ERR,
			"%s: memory allocation failed",
			VXGE_DRIVER_NAME);
		return  -ENOMEM;
	}

	vdev->vxge_entries = kzalloc(intr_cnt * sizeof(struct vxge_msix_entry),
							GFP_KERNEL);
	if (!vdev->vxge_entries) {
		vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
			VXGE_DRIVER_NAME);
		kfree(vdev->entries);
		return -ENOMEM;
	}

	/* Last vector in the list is used for alarm */
	alarm_msix_id = VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
	for (i = 0, j = 0; i < vdev->max_vpath_supported; i++) {

		msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;

		/* Initialize the fifo vector */
		vdev->entries[j].entry = msix_intr_vect;
		vdev->vxge_entries[j].entry = msix_intr_vect;
		vdev->vxge_entries[j].in_use = 0;
		j++;

		/* Initialize the ring vector */
		vdev->entries[j].entry = msix_intr_vect + 1;
		vdev->vxge_entries[j].entry = msix_intr_vect + 1;
		vdev->vxge_entries[j].in_use = 0;
		j++;
	}

	/* Initialize the alarm vector */
	vdev->entries[j].entry = alarm_msix_id;
	vdev->vxge_entries[j].entry = alarm_msix_id;
	vdev->vxge_entries[j].in_use = 0;

	ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
	/* if driver request exceeeds available irq's, request with a small
	 * number.
	*/
	if (ret > 0) {
		vxge_debug_init(VXGE_ERR,
			"%s: MSI-X enable failed for %d vectors, available: %d",
			VXGE_DRIVER_NAME, intr_cnt, ret);
		vdev->max_vpath_supported = vdev->no_of_vpath;
		intr_cnt = (vdev->max_vpath_supported * 2) + 1;

		/* Reset the alarm vector setting */
		vdev->entries[j].entry = 0;
		vdev->vxge_entries[j].entry = 0;

		/* Initialize the alarm vector with new setting */
		vdev->entries[intr_cnt - 1].entry = alarm_msix_id;
		vdev->vxge_entries[intr_cnt - 1].entry = alarm_msix_id;
		vdev->vxge_entries[intr_cnt - 1].in_use = 0;

		ret = pci_enable_msix(vdev->pdev, vdev->entries, intr_cnt);
		if (!ret)
			vxge_debug_init(VXGE_ERR,
				"%s: MSI-X enabled for %d vectors",
				VXGE_DRIVER_NAME, intr_cnt);
	}

	if (ret) {
		vxge_debug_init(VXGE_ERR,
			"%s: MSI-X enable failed for %d vectors, ret: %d",
			VXGE_DRIVER_NAME, intr_cnt, ret);
		kfree(vdev->entries);
		kfree(vdev->vxge_entries);
		vdev->entries = NULL;
		vdev->vxge_entries = NULL;
		return -ENODEV;
	}
	return 0;
}

static int vxge_enable_msix(struct vxgedev *vdev)
{

	int i, ret = 0;
	enum vxge_hw_status status;
	/* 0 - Tx, 1 - Rx  */
	int tim_msix_id[4];
	int alarm_msix_id = 0, msix_intr_vect = 0;;
	vdev->intr_cnt = 0;

	/* allocate msix vectors */
	ret = vxge_alloc_msix(vdev);
	if (!ret) {
		/* Last vector in the list is used for alarm */
		alarm_msix_id =
			VXGE_HW_VPATH_MSIX_ACTIVE * vdev->no_of_vpath - 2;
		for (i = 0; i < vdev->no_of_vpath; i++) {

			/* If fifo or ring are not enabled
			   the MSIX vector for that should be set to 0
			   Hence initializeing this array to all 0s.
			*/
			memset(tim_msix_id, 0, sizeof(tim_msix_id));
			msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
			tim_msix_id[0] = msix_intr_vect;

			tim_msix_id[1] = msix_intr_vect + 1;
			vdev->vpaths[i].ring.rx_vector_no = tim_msix_id[1];

			status = vxge_hw_vpath_msix_set(
						vdev->vpaths[i].handle,
						tim_msix_id, alarm_msix_id);
			if (status != VXGE_HW_OK) {
				vxge_debug_init(VXGE_ERR,
					"vxge_hw_vpath_msix_set "
					"failed with status : %x", status);
				kfree(vdev->entries);
				kfree(vdev->vxge_entries);
				pci_disable_msix(vdev->pdev);
				return -ENODEV;
			}
		}
	}

	return ret;
}

static void vxge_rem_msix_isr(struct vxgedev *vdev)
{
	int intr_cnt;

	for (intr_cnt = 0; intr_cnt < (vdev->max_vpath_supported * 2 + 1);
		intr_cnt++) {
		if (vdev->vxge_entries[intr_cnt].in_use) {
			synchronize_irq(vdev->entries[intr_cnt].vector);
			free_irq(vdev->entries[intr_cnt].vector,
				vdev->vxge_entries[intr_cnt].arg);
			vdev->vxge_entries[intr_cnt].in_use = 0;
		}
	}

	kfree(vdev->entries);
	kfree(vdev->vxge_entries);
	vdev->entries = NULL;
	vdev->vxge_entries = NULL;

	if (vdev->config.intr_type == MSI_X)
		pci_disable_msix(vdev->pdev);
}
#endif

static void vxge_rem_isr(struct vxgedev *vdev)
{
	struct __vxge_hw_device  *hldev;
	hldev = (struct __vxge_hw_device  *) pci_get_drvdata(vdev->pdev);

#ifdef CONFIG_PCI_MSI
	if (vdev->config.intr_type == MSI_X) {
		vxge_rem_msix_isr(vdev);
	} else
#endif
	if (vdev->config.intr_type == INTA) {
			synchronize_irq(vdev->pdev->irq);
			free_irq(vdev->pdev->irq, hldev);
	}
}

static int vxge_add_isr(struct vxgedev *vdev)
{
	int ret = 0;
	struct __vxge_hw_device  *hldev =
		(struct __vxge_hw_device  *) pci_get_drvdata(vdev->pdev);
#ifdef CONFIG_PCI_MSI
	int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
	u64 function_mode = vdev->config.device_hw_info.function_mode;
	int pci_fun = PCI_FUNC(vdev->pdev->devfn);

	if (vdev->config.intr_type == MSI_X)
		ret = vxge_enable_msix(vdev);

	if (ret) {
		vxge_debug_init(VXGE_ERR,
			"%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
		if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
			test_and_set_bit(__VXGE_STATE_CARD_UP,
				&driver_config->inta_dev_open))
			return VXGE_HW_FAIL;
		else {
			vxge_debug_init(VXGE_ERR,
				"%s: Defaulting to INTA", VXGE_DRIVER_NAME);
			vdev->config.intr_type = INTA;
			vxge_hw_device_set_intr_type(vdev->devh,
				VXGE_HW_INTR_MODE_IRQLINE);
			vxge_close_vpaths(vdev, 1);
			vdev->no_of_vpath = 1;
			vdev->stats.vpaths_open = 1;
		}
	}

	if (vdev->config.intr_type == MSI_X) {
		for (intr_idx = 0;
		     intr_idx < (vdev->no_of_vpath *
			VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {

			msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
			irq_req = 0;

			switch (msix_idx) {
			case 0:
				snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
					"%s:vxge fn: %d vpath: %d Tx MSI-X: %d",
					vdev->ndev->name, pci_fun, vp_idx,
					vdev->entries[intr_cnt].entry);
				ret = request_irq(
				    vdev->entries[intr_cnt].vector,
					vxge_tx_msix_handle, 0,
					vdev->desc[intr_cnt],
					&vdev->vpaths[vp_idx].fifo);
					vdev->vxge_entries[intr_cnt].arg =
						&vdev->vpaths[vp_idx].fifo;
				irq_req = 1;
				break;
			case 1:
				snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
					"%s:vxge fn: %d vpath: %d Rx MSI-X: %d",
					vdev->ndev->name, pci_fun, vp_idx,
					vdev->entries[intr_cnt].entry);
				ret = request_irq(
				    vdev->entries[intr_cnt].vector,
					vxge_rx_msix_napi_handle,
					0,
					vdev->desc[intr_cnt],
					&vdev->vpaths[vp_idx].ring);
					vdev->vxge_entries[intr_cnt].arg =
						&vdev->vpaths[vp_idx].ring;
				irq_req = 1;
				break;
			}

			if (ret) {
				vxge_debug_init(VXGE_ERR,
					"%s: MSIX - %d  Registration failed",
					vdev->ndev->name, intr_cnt);
				vxge_rem_msix_isr(vdev);
				if ((function_mode ==
					VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
					test_and_set_bit(__VXGE_STATE_CARD_UP,
						&driver_config->inta_dev_open))
					return VXGE_HW_FAIL;
				else {
					vxge_hw_device_set_intr_type(
						vdev->devh,
						VXGE_HW_INTR_MODE_IRQLINE);
						vdev->config.intr_type = INTA;
					vxge_debug_init(VXGE_ERR,
						"%s: Defaulting to INTA"
						, vdev->ndev->name);
					vxge_close_vpaths(vdev, 1);
					vdev->no_of_vpath = 1;
					vdev->stats.vpaths_open = 1;
					goto INTA_MODE;
				}
			}

			if (irq_req) {
				/* We requested for this msix interrupt */
				vdev->vxge_entries[intr_cnt].in_use = 1;
				vxge_hw_vpath_msix_unmask(
					vdev->vpaths[vp_idx].handle,
					intr_idx);
				intr_cnt++;
			}

			/* Point to next vpath handler */
			if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0)
				&& (vp_idx < (vdev->no_of_vpath - 1)))
					vp_idx++;
		}

		intr_cnt = vdev->max_vpath_supported * 2;
		snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
			"%s:vxge Alarm fn: %d MSI-X: %d",
			vdev->ndev->name, pci_fun,
			vdev->entries[intr_cnt].entry);
		/* For Alarm interrupts */
		ret = request_irq(vdev->entries[intr_cnt].vector,
					vxge_alarm_msix_handle, 0,
					vdev->desc[intr_cnt],
					&vdev->vpaths[vp_idx]);
		if (ret) {
			vxge_debug_init(VXGE_ERR,
				"%s: MSIX - %d Registration failed",
				vdev->ndev->name, intr_cnt);
			vxge_rem_msix_isr(vdev);
			if ((function_mode ==
				VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
				test_and_set_bit(__VXGE_STATE_CARD_UP,
						&driver_config->inta_dev_open))
				return VXGE_HW_FAIL;
			else {
				vxge_hw_device_set_intr_type(vdev->devh,
						VXGE_HW_INTR_MODE_IRQLINE);
				vdev->config.intr_type = INTA;
				vxge_debug_init(VXGE_ERR,
					"%s: Defaulting to INTA",
					vdev->ndev->name);
				vxge_close_vpaths(vdev, 1);
				vdev->no_of_vpath = 1;
				vdev->stats.vpaths_open = 1;
				goto INTA_MODE;
			}
		}

		vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
					intr_idx - 2);
		vdev->vxge_entries[intr_cnt].in_use = 1;
		vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[vp_idx];
	}
INTA_MODE:
#endif
	snprintf(vdev->desc[0], VXGE_INTR_STRLEN, "%s:vxge", vdev->ndev->name);

	if (vdev->config.intr_type == INTA) {
		ret = request_irq((int) vdev->pdev->irq,
			vxge_isr_napi,
			IRQF_SHARED, vdev->desc[0], hldev);
		if (ret) {
			vxge_debug_init(VXGE_ERR,
				"%s %s-%d: ISR registration failed",
				VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
			return -ENODEV;
		}
		vxge_debug_init(VXGE_TRACE,
			"new %s-%d line allocated",
			"IRQ", vdev->pdev->irq);
	}

	return VXGE_HW_OK;
}

static void vxge_poll_vp_reset(unsigned long data)
{
	struct vxgedev *vdev = (struct vxgedev *)data;
	int i, j = 0;

	for (i = 0; i < vdev->no_of_vpath; i++) {
		if (test_bit(i, &vdev->vp_reset)) {
			vxge_reset_vpath(vdev, i);
			j++;
		}
	}
	if (j && (vdev->config.intr_type != MSI_X)) {
		vxge_hw_device_unmask_all(vdev->devh);
		vxge_hw_device_flush_io(vdev->devh);
	}

	mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
}

static void vxge_poll_vp_lockup(unsigned long data)
{
	struct vxgedev *vdev = (struct vxgedev *)data;
	int i;
	struct vxge_ring *ring;
	enum vxge_hw_status status = VXGE_HW_OK;

	for (i = 0; i < vdev->no_of_vpath; i++) {
		ring = &vdev->vpaths[i].ring;
		/* Did this vpath received any packets */
		if (ring->stats.prev_rx_frms == ring->stats.rx_frms) {
			status = vxge_hw_vpath_check_leak(ring->handle);

			/* Did it received any packets last time */
			if ((VXGE_HW_FAIL == status) &&
				(VXGE_HW_FAIL == ring->last_status)) {

				/* schedule vpath reset */
				if (!test_and_set_bit(i, &vdev->vp_reset)) {

					/* disable interrupts for this vpath */
					vxge_vpath_intr_disable(vdev, i);

					/* stop the queue for this vpath */
					vxge_stop_tx_queue(&vdev->vpaths[i].
								fifo);
					continue;
				}
			}
		}
		ring->stats.prev_rx_frms = ring->stats.rx_frms;
		ring->last_status = status;
	}

	/* Check every 1 milli second */
	mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
}

/**
 * vxge_open
 * @dev: pointer to the device structure.
 *
 * This function is the open entry point of the driver. It mainly calls a
 * function to allocate Rx buffers and inserts them into the buffer
 * descriptors and then enables the Rx part of the NIC.
 * Return value: '0' on success and an appropriate (-)ve integer as
 * defined in errno.h file on failure.
 */
int
vxge_open(struct net_device *dev)
{
	enum vxge_hw_status status;
	struct vxgedev *vdev;
	struct __vxge_hw_device *hldev;
	int ret = 0;
	int i;
	u64 val64, function_mode;
	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d", dev->name, __func__, __LINE__);

	vdev = (struct vxgedev *)netdev_priv(dev);
	hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);
	function_mode = vdev->config.device_hw_info.function_mode;

	/* make sure you have link off by default every time Nic is
	 * initialized */
	netif_carrier_off(dev);

	/* Check for another device already opn with INTA */
	if ((function_mode == VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) &&
		test_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open)) {
		ret = -EPERM;
		goto out0;
	}

	/* Open VPATHs */
	status = vxge_open_vpaths(vdev);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
			"%s: fatal: Vpath open failed", vdev->ndev->name);
		ret = -EPERM;
		goto out0;
	}

	vdev->mtu = dev->mtu;

	status = vxge_add_isr(vdev);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
			"%s: fatal: ISR add failed", dev->name);
		ret = -EPERM;
		goto out1;
	}


	if (vdev->config.intr_type != MSI_X) {
		netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
			vdev->config.napi_weight);
		napi_enable(&vdev->napi);
	} else {
		for (i = 0; i < vdev->no_of_vpath; i++) {
			netif_napi_add(dev, &vdev->vpaths[i].ring.napi,
			    vxge_poll_msix, vdev->config.napi_weight);
			napi_enable(&vdev->vpaths[i].ring.napi);
		}
	}

	/* configure RTH */
	if (vdev->config.rth_steering) {
		status = vxge_rth_configure(vdev);
		if (status != VXGE_HW_OK) {
			vxge_debug_init(VXGE_ERR,
				"%s: fatal: RTH configuration failed",
				dev->name);
			ret = -EPERM;
			goto out2;
		}
	}

	for (i = 0; i < vdev->no_of_vpath; i++) {
		/* set initial mtu before enabling the device */
		status = vxge_hw_vpath_mtu_set(vdev->vpaths[i].handle,
						vdev->mtu);
		if (status != VXGE_HW_OK) {
			vxge_debug_init(VXGE_ERR,
				"%s: fatal: can not set new MTU", dev->name);
			ret = -EPERM;
			goto out2;
		}
	}

	VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
	vxge_debug_init(vdev->level_trace,
		"%s: MTU is %d", vdev->ndev->name, vdev->mtu);
	VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);

	/* Reprogram the DA table with populated mac addresses */
	for (i = 0; i < vdev->no_of_vpath; i++) {
		vxge_restore_vpath_mac_addr(&vdev->vpaths[i]);
		vxge_restore_vpath_vid_table(&vdev->vpaths[i]);
	}

	/* Enable vpath to sniff all unicast/multicast traffic that not
	 * addressed to them. We allow promiscous mode for PF only
	 */

	val64 = 0;
	for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
		val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);

	vxge_hw_mgmt_reg_write(vdev->devh,
		vxge_hw_mgmt_reg_type_mrpcim,
		0,
		(ulong)offsetof(struct vxge_hw_mrpcim_reg,
			rxmac_authorize_all_addr),
		val64);

	vxge_hw_mgmt_reg_write(vdev->devh,
		vxge_hw_mgmt_reg_type_mrpcim,
		0,
		(ulong)offsetof(struct vxge_hw_mrpcim_reg,
			rxmac_authorize_all_vid),
		val64);

	vxge_set_multicast(dev);

	/* Enabling Bcast and mcast for all vpath */
	for (i = 0; i < vdev->no_of_vpath; i++) {
		status = vxge_hw_vpath_bcast_enable(vdev->vpaths[i].handle);
		if (status != VXGE_HW_OK)
			vxge_debug_init(VXGE_ERR,
				"%s : Can not enable bcast for vpath "
				"id %d", dev->name, i);
		if (vdev->config.addr_learn_en) {
			status =
			    vxge_hw_vpath_mcast_enable(vdev->vpaths[i].handle);
			if (status != VXGE_HW_OK)
				vxge_debug_init(VXGE_ERR,
					"%s : Can not enable mcast for vpath "
					"id %d", dev->name, i);
		}
	}

	vxge_hw_device_setpause_data(vdev->devh, 0,
		vdev->config.tx_pause_enable,
		vdev->config.rx_pause_enable);

	if (vdev->vp_reset_timer.function == NULL)
		vxge_os_timer(vdev->vp_reset_timer,
			vxge_poll_vp_reset, vdev, (HZ/2));

	if (vdev->vp_lockup_timer.function == NULL)
		vxge_os_timer(vdev->vp_lockup_timer,
			vxge_poll_vp_lockup, vdev, (HZ/2));

	set_bit(__VXGE_STATE_CARD_UP, &vdev->state);

	smp_wmb();

	if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
		netif_carrier_on(vdev->ndev);
		printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name);
		vdev->stats.link_up++;
	}

	vxge_hw_device_intr_enable(vdev->devh);

	smp_wmb();

	for (i = 0; i < vdev->no_of_vpath; i++) {
		vxge_hw_vpath_enable(vdev->vpaths[i].handle);
		smp_wmb();
		vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
	}

	vxge_start_all_tx_queue(vdev);
	goto out0;

out2:
	vxge_rem_isr(vdev);

	/* Disable napi */
	if (vdev->config.intr_type != MSI_X)
		napi_disable(&vdev->napi);
	else {
		for (i = 0; i < vdev->no_of_vpath; i++)
			napi_disable(&vdev->vpaths[i].ring.napi);
	}

out1:
	vxge_close_vpaths(vdev, 0);
out0:
	vxge_debug_entryexit(VXGE_TRACE,
				"%s: %s:%d  Exiting...",
				dev->name, __func__, __LINE__);
	return ret;
}

/* Loop throught the mac address list and delete all the entries */
void vxge_free_mac_add_list(struct vxge_vpath *vpath)
{

	struct list_head *entry, *next;
	if (list_empty(&vpath->mac_addr_list))
		return;

	list_for_each_safe(entry, next, &vpath->mac_addr_list) {
		list_del(entry);
		kfree((struct vxge_mac_addrs *)entry);
	}
}

static void vxge_napi_del_all(struct vxgedev *vdev)
{
	int i;
	if (vdev->config.intr_type != MSI_X)
		netif_napi_del(&vdev->napi);
	else {
		for (i = 0; i < vdev->no_of_vpath; i++)
			netif_napi_del(&vdev->vpaths[i].ring.napi);
	}
	return;
}

int do_vxge_close(struct net_device *dev, int do_io)
{
	enum vxge_hw_status status;
	struct vxgedev *vdev;
	struct __vxge_hw_device *hldev;
	int i;
	u64 val64, vpath_vector;
	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
		dev->name, __func__, __LINE__);

	vdev = (struct vxgedev *)netdev_priv(dev);
	hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev);

	/* If vxge_handle_crit_err task is executing,
	 * wait till it completes. */
	while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
		msleep(50);

	clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
	if (do_io) {
		/* Put the vpath back in normal mode */
		vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
		status = vxge_hw_mgmt_reg_read(vdev->devh,
				vxge_hw_mgmt_reg_type_mrpcim,
				0,
				(ulong)offsetof(
					struct vxge_hw_mrpcim_reg,
					rts_mgr_cbasin_cfg),
				&val64);

		if (status == VXGE_HW_OK) {
			val64 &= ~vpath_vector;
			status = vxge_hw_mgmt_reg_write(vdev->devh,
					vxge_hw_mgmt_reg_type_mrpcim,
					0,
					(ulong)offsetof(
						struct vxge_hw_mrpcim_reg,
						rts_mgr_cbasin_cfg),
					val64);
		}

		/* Remove the function 0 from promiscous mode */
		vxge_hw_mgmt_reg_write(vdev->devh,
			vxge_hw_mgmt_reg_type_mrpcim,
			0,
			(ulong)offsetof(struct vxge_hw_mrpcim_reg,
				rxmac_authorize_all_addr),
			0);

		vxge_hw_mgmt_reg_write(vdev->devh,
			vxge_hw_mgmt_reg_type_mrpcim,
			0,
			(ulong)offsetof(struct vxge_hw_mrpcim_reg,
				rxmac_authorize_all_vid),
			0);

		smp_wmb();
	}
	del_timer_sync(&vdev->vp_lockup_timer);

	del_timer_sync(&vdev->vp_reset_timer);

	/* Disable napi */
	if (vdev->config.intr_type != MSI_X)
		napi_disable(&vdev->napi);
	else {
		for (i = 0; i < vdev->no_of_vpath; i++)
			napi_disable(&vdev->vpaths[i].ring.napi);
	}

	netif_carrier_off(vdev->ndev);
	printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name);
	vxge_stop_all_tx_queue(vdev);

	/* Note that at this point xmit() is stopped by upper layer */
	if (do_io)
		vxge_hw_device_intr_disable(vdev->devh);

	mdelay(1000);

	vxge_rem_isr(vdev);

	vxge_napi_del_all(vdev);

	if (do_io)
		vxge_reset_all_vpaths(vdev);

	vxge_close_vpaths(vdev, 0);

	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);

	clear_bit(__VXGE_STATE_CARD_UP, &driver_config->inta_dev_open);
	clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);

	return 0;
}

/**
 * vxge_close
 * @dev: device pointer.
 *
 * This is the stop entry point of the driver. It needs to undo exactly
 * whatever was done by the open entry point, thus it's usually referred to
 * as the close function.Among other things this function mainly stops the
 * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
 * Return value: '0' on success and an appropriate (-)ve integer as
 * defined in errno.h file on failure.
 */
int
vxge_close(struct net_device *dev)
{
	do_vxge_close(dev, 1);
	return 0;
}

/**
 * vxge_change_mtu
 * @dev: net device pointer.
 * @new_mtu :the new MTU size for the device.
 *
 * A driver entry point to change MTU size for the device. Before changing
 * the MTU the device must be stopped.
 */
static int vxge_change_mtu(struct net_device *dev, int new_mtu)
{
	struct vxgedev *vdev = netdev_priv(dev);

	vxge_debug_entryexit(vdev->level_trace,
		"%s:%d", __func__, __LINE__);
	if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
		vxge_debug_init(vdev->level_err,
			"%s: mtu size is invalid", dev->name);
		return -EPERM;
	}

	/* check if device is down already */
	if (unlikely(!is_vxge_card_up(vdev))) {
		/* just store new value, will use later on open() */
		dev->mtu = new_mtu;
		vxge_debug_init(vdev->level_err,
			"%s", "device is down on MTU change");
		return 0;
	}

	vxge_debug_init(vdev->level_trace,
		"trying to apply new MTU %d", new_mtu);

	if (vxge_close(dev))
		return -EIO;

	dev->mtu = new_mtu;
	vdev->mtu = new_mtu;

	if (vxge_open(dev))
		return -EIO;

	vxge_debug_init(vdev->level_trace,
		"%s: MTU changed to %d", vdev->ndev->name, new_mtu);

	vxge_debug_entryexit(vdev->level_trace,
		"%s:%d  Exiting...", __func__, __LINE__);

	return 0;
}

/**
 * vxge_get_stats
 * @dev: pointer to the device structure
 *
 * Updates the device statistics structure. This function updates the device
 * statistics structure in the net_device structure and returns a pointer
 * to the same.
 */
static struct net_device_stats *
vxge_get_stats(struct net_device *dev)
{
	struct vxgedev *vdev;
	struct net_device_stats *net_stats;
	int k;

	vdev = netdev_priv(dev);

	net_stats = &vdev->stats.net_stats;

	memset(net_stats, 0, sizeof(struct net_device_stats));

	for (k = 0; k < vdev->no_of_vpath; k++) {
		net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms;
		net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes;
		net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors;
		net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast;
		net_stats->rx_dropped +=
			vdev->vpaths[k].ring.stats.rx_dropped;

		net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms;
		net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes;
		net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors;
	}

	return net_stats;
}

/**
 * vxge_ioctl
 * @dev: Device pointer.
 * @ifr: An IOCTL specific structure, that can contain a pointer to
 *       a proprietary structure used to pass information to the driver.
 * @cmd: This is used to distinguish between the different commands that
 *       can be passed to the IOCTL functions.
 *
 * Entry point for the Ioctl.
 */
static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
	return -EOPNOTSUPP;
}

/**
 * vxge_tx_watchdog
 * @dev: pointer to net device structure
 *
 * Watchdog for transmit side.
 * This function is triggered if the Tx Queue is stopped
 * for a pre-defined amount of time when the Interface is still up.
 */
static void
vxge_tx_watchdog(struct net_device *dev)
{
	struct vxgedev *vdev;

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);

	vdev = (struct vxgedev *)netdev_priv(dev);

	vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;

	vxge_reset(vdev);
	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d  Exiting...", __func__, __LINE__);
}

/**
 * vxge_vlan_rx_register
 * @dev: net device pointer.
 * @grp: vlan group
 *
 * Vlan group registration
 */
static void
vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
{
	struct vxgedev *vdev;
	struct vxge_vpath *vpath;
	int vp;
	u64 vid;
	enum vxge_hw_status status;
	int i;

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);

	vdev = (struct vxgedev *)netdev_priv(dev);

	vpath = &vdev->vpaths[0];
	if ((NULL == grp) && (vpath->is_open)) {
		/* Get the first vlan */
		status = vxge_hw_vpath_vid_get(vpath->handle, &vid);

		while (status == VXGE_HW_OK) {

			/* Delete this vlan from the vid table */
			for (vp = 0; vp < vdev->no_of_vpath; vp++) {
				vpath = &vdev->vpaths[vp];
				if (!vpath->is_open)
					continue;

				vxge_hw_vpath_vid_delete(vpath->handle, vid);
			}

			/* Get the next vlan to be deleted */
			vpath = &vdev->vpaths[0];
			status = vxge_hw_vpath_vid_get(vpath->handle, &vid);
		}
	}

	vdev->vlgrp = grp;

	for (i = 0; i < vdev->no_of_vpath; i++) {
		if (vdev->vpaths[i].is_configured)
			vdev->vpaths[i].ring.vlgrp = grp;
	}

	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d  Exiting...", __func__, __LINE__);
}

/**
 * vxge_vlan_rx_add_vid
 * @dev: net device pointer.
 * @vid: vid
 *
 * Add the vlan id to the devices vlan id table
 */
static void
vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
{
	struct vxgedev *vdev;
	struct vxge_vpath *vpath;
	int vp_id;

	vdev = (struct vxgedev *)netdev_priv(dev);

	/* Add these vlan to the vid table */
	for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
		vpath = &vdev->vpaths[vp_id];
		if (!vpath->is_open)
			continue;
		vxge_hw_vpath_vid_add(vpath->handle, vid);
	}
}

/**
 * vxge_vlan_rx_add_vid
 * @dev: net device pointer.
 * @vid: vid
 *
 * Remove the vlan id from the device's vlan id table
 */
static void
vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
{
	struct vxgedev *vdev;
	struct vxge_vpath *vpath;
	int vp_id;

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);

	vdev = (struct vxgedev *)netdev_priv(dev);

	vlan_group_set_device(vdev->vlgrp, vid, NULL);

	/* Delete this vlan from the vid table */
	for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
		vpath = &vdev->vpaths[vp_id];
		if (!vpath->is_open)
			continue;
		vxge_hw_vpath_vid_delete(vpath->handle, vid);
	}
	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d  Exiting...", __func__, __LINE__);
}

static const struct net_device_ops vxge_netdev_ops = {
	.ndo_open               = vxge_open,
	.ndo_stop               = vxge_close,
	.ndo_get_stats          = vxge_get_stats,
	.ndo_start_xmit         = vxge_xmit,
	.ndo_validate_addr      = eth_validate_addr,
	.ndo_set_multicast_list = vxge_set_multicast,

	.ndo_do_ioctl           = vxge_ioctl,

	.ndo_set_mac_address    = vxge_set_mac_addr,
	.ndo_change_mtu         = vxge_change_mtu,
	.ndo_vlan_rx_register   = vxge_vlan_rx_register,
	.ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
	.ndo_vlan_rx_add_vid	= vxge_vlan_rx_add_vid,

	.ndo_tx_timeout         = vxge_tx_watchdog,
#ifdef CONFIG_NET_POLL_CONTROLLER
	.ndo_poll_controller    = vxge_netpoll,
#endif
};

int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
				   struct vxge_config *config,
				   int high_dma, int no_of_vpath,
				   struct vxgedev **vdev_out)
{
	struct net_device *ndev;
	enum vxge_hw_status status = VXGE_HW_OK;
	struct vxgedev *vdev;
	int i, ret = 0, no_of_queue = 1;
	u64 stat;

	*vdev_out = NULL;
	if (config->tx_steering_type == TX_MULTIQ_STEERING)
		no_of_queue = no_of_vpath;

	ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
			no_of_queue);
	if (ndev == NULL) {
		vxge_debug_init(
			vxge_hw_device_trace_level_get(hldev),
		"%s : device allocation failed", __func__);
		ret = -ENODEV;
		goto _out0;
	}

	vxge_debug_entryexit(
		vxge_hw_device_trace_level_get(hldev),
		"%s: %s:%d  Entering...",
		ndev->name, __func__, __LINE__);

	vdev = netdev_priv(ndev);
	memset(vdev, 0, sizeof(struct vxgedev));

	vdev->ndev = ndev;
	vdev->devh = hldev;
	vdev->pdev = hldev->pdev;
	memcpy(&vdev->config, config, sizeof(struct vxge_config));
	vdev->rx_csum = 1;	/* Enable Rx CSUM by default. */

	SET_NETDEV_DEV(ndev, &vdev->pdev->dev);

	ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
				NETIF_F_HW_VLAN_FILTER;
	/*  Driver entry points */
	ndev->irq = vdev->pdev->irq;
	ndev->base_addr = (unsigned long) hldev->bar0;

	ndev->netdev_ops = &vxge_netdev_ops;

	ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;

	initialize_ethtool_ops(ndev);

	/* Allocate memory for vpath */
	vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
				no_of_vpath, GFP_KERNEL);
	if (!vdev->vpaths) {
		vxge_debug_init(VXGE_ERR,
			"%s: vpath memory allocation failed",
			vdev->ndev->name);
		ret = -ENODEV;
		goto _out1;
	}

	ndev->features |= NETIF_F_SG;

	ndev->features |= NETIF_F_HW_CSUM;
	vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
		"%s : checksuming enabled", __func__);

	if (high_dma) {
		ndev->features |= NETIF_F_HIGHDMA;
		vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
			"%s : using High DMA", __func__);
	}

	ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;

	if (vdev->config.gro_enable)
		ndev->features |= NETIF_F_GRO;

	if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
		ndev->real_num_tx_queues = no_of_vpath;

#ifdef NETIF_F_LLTX
	ndev->features |= NETIF_F_LLTX;
#endif

	for (i = 0; i < no_of_vpath; i++)
		spin_lock_init(&vdev->vpaths[i].fifo.tx_lock);

	if (register_netdev(ndev)) {
		vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
			"%s: %s : device registration failed!",
			ndev->name, __func__);
		ret = -ENODEV;
		goto _out2;
	}

	/*  Set the factory defined MAC address initially */
	ndev->addr_len = ETH_ALEN;

	/* Make Link state as off at this point, when the Link change
	 * interrupt comes the state will be automatically changed to
	 * the right state.
	 */
	netif_carrier_off(ndev);

	vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
		"%s: Ethernet device registered",
		ndev->name);

	*vdev_out = vdev;

	/* Resetting the Device stats */
	status = vxge_hw_mrpcim_stats_access(
				hldev,
				VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
				0,
				0,
				&stat);

	if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
		vxge_debug_init(
			vxge_hw_device_trace_level_get(hldev),
			"%s: device stats clear returns"
			"VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);

	vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
		"%s: %s:%d  Exiting...",
		ndev->name, __func__, __LINE__);

	return ret;
_out2:
	kfree(vdev->vpaths);
_out1:
	free_netdev(ndev);
_out0:
	return ret;
}

/*
 * vxge_device_unregister
 *
 * This function will unregister and free network device
 */
void
vxge_device_unregister(struct __vxge_hw_device *hldev)
{
	struct vxgedev *vdev;
	struct net_device *dev;
	char buf[IFNAMSIZ];
#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
	(VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
	u32 level_trace;
#endif

	dev = hldev->ndev;
	vdev = netdev_priv(dev);
#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
	(VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
	level_trace = vdev->level_trace;
#endif
	vxge_debug_entryexit(level_trace,
		"%s: %s:%d", vdev->ndev->name, __func__, __LINE__);

	memcpy(buf, vdev->ndev->name, IFNAMSIZ);

	/* in 2.6 will call stop() if device is up */
	unregister_netdev(dev);

	flush_scheduled_work();

	vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf);
	vxge_debug_entryexit(level_trace,
		"%s: %s:%d  Exiting...", buf, __func__, __LINE__);
}

/*
 * vxge_callback_crit_err
 *
 * This function is called by the alarm handler in interrupt context.
 * Driver must analyze it based on the event type.
 */
static void
vxge_callback_crit_err(struct __vxge_hw_device *hldev,
			enum vxge_hw_event type, u64 vp_id)
{
	struct net_device *dev = hldev->ndev;
	struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev);
	int vpath_idx;

	vxge_debug_entryexit(vdev->level_trace,
		"%s: %s:%d", vdev->ndev->name, __func__, __LINE__);

	/* Note: This event type should be used for device wide
	 * indications only - Serious errors, Slot freeze and critical errors
	 */
	vdev->cric_err_event = type;

	for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++)
		if (vdev->vpaths[vpath_idx].device_id == vp_id)
			break;

	if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
		if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
			vxge_debug_init(VXGE_ERR,
				"%s: Slot is frozen", vdev->ndev->name);
		} else if (type == VXGE_HW_EVENT_SERR) {
			vxge_debug_init(VXGE_ERR,
				"%s: Encountered Serious Error",
				vdev->ndev->name);
		} else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
			vxge_debug_init(VXGE_ERR,
				"%s: Encountered Critical Error",
				vdev->ndev->name);
	}

	if ((type == VXGE_HW_EVENT_SERR) ||
		(type == VXGE_HW_EVENT_SLOT_FREEZE)) {
		if (unlikely(vdev->exec_mode))
			clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
	} else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
		vxge_hw_device_mask_all(hldev);
		if (unlikely(vdev->exec_mode))
			clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
	} else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
		  (type == VXGE_HW_EVENT_VPATH_ERR)) {

		if (unlikely(vdev->exec_mode))
			clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
		else {
			/* check if this vpath is already set for reset */
			if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {

				/* disable interrupts for this vpath */
				vxge_vpath_intr_disable(vdev, vpath_idx);

				/* stop the queue for this vpath */
				vxge_stop_tx_queue(&vdev->vpaths[vpath_idx].
							fifo);
			}
		}
	}

	vxge_debug_entryexit(vdev->level_trace,
		"%s: %s:%d  Exiting...",
		vdev->ndev->name, __func__, __LINE__);
}

static void verify_bandwidth(void)
{
	int i, band_width, total = 0, equal_priority = 0;

	/* 1. If user enters 0 for some fifo, give equal priority to all */
	for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
		if (bw_percentage[i] == 0) {
			equal_priority = 1;
			break;
		}
	}

	if (!equal_priority) {
		/* 2. If sum exceeds 100, give equal priority to all */
		for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
			if (bw_percentage[i] == 0xFF)
				break;

			total += bw_percentage[i];
			if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
				equal_priority = 1;
				break;
			}
		}
	}

	if (!equal_priority) {
		/* Is all the bandwidth consumed? */
		if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
			if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
				/* Split rest of bw equally among next VPs*/
				band_width =
				  (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
					(VXGE_HW_MAX_VIRTUAL_PATHS - i);
				if (band_width < 2) /* min of 2% */
					equal_priority = 1;
				else {
					for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
						i++)
						bw_percentage[i] =
							band_width;
				}
			}
		} else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
			equal_priority = 1;
	}

	if (equal_priority) {
		vxge_debug_init(VXGE_ERR,
			"%s: Assigning equal bandwidth to all the vpaths",
			VXGE_DRIVER_NAME);
		bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
					VXGE_HW_MAX_VIRTUAL_PATHS;
		for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
			bw_percentage[i] = bw_percentage[0];
	}

	return;
}

/*
 * Vpath configuration
 */
static int __devinit vxge_config_vpaths(
			struct vxge_hw_device_config *device_config,
			u64 vpath_mask, struct vxge_config *config_param)
{
	int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
	u32 txdl_size, txdl_per_memblock;

	temp = driver_config->vpath_per_dev;
	if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
		(max_config_dev == VXGE_MAX_CONFIG_DEV)) {
		/* No more CPU. Return vpath number as zero.*/
		if (driver_config->g_no_cpus == -1)
			return 0;

		if (!driver_config->g_no_cpus)
			driver_config->g_no_cpus = num_online_cpus();

		driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
		if (!driver_config->vpath_per_dev)
			driver_config->vpath_per_dev = 1;

		for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
			if (!vxge_bVALn(vpath_mask, i, 1))
				continue;
			else
				default_no_vpath++;
		if (default_no_vpath < driver_config->vpath_per_dev)
			driver_config->vpath_per_dev = default_no_vpath;

		driver_config->g_no_cpus = driver_config->g_no_cpus -
				(driver_config->vpath_per_dev * 2);
		if (driver_config->g_no_cpus <= 0)
			driver_config->g_no_cpus = -1;
	}

	if (driver_config->vpath_per_dev == 1) {
		vxge_debug_ll_config(VXGE_TRACE,
			"%s: Disable tx and rx steering, "
			"as single vpath is configured", VXGE_DRIVER_NAME);
		config_param->rth_steering = NO_STEERING;
		config_param->tx_steering_type = NO_STEERING;
		device_config->rth_en = 0;
	}

	/* configure bandwidth */
	for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
		device_config->vp_config[i].min_bandwidth = bw_percentage[i];

	for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
		device_config->vp_config[i].vp_id = i;
		device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
		if (no_of_vpaths < driver_config->vpath_per_dev) {
			if (!vxge_bVALn(vpath_mask, i, 1)) {
				vxge_debug_ll_config(VXGE_TRACE,
					"%s: vpath: %d is not available",
					VXGE_DRIVER_NAME, i);
				continue;
			} else {
				vxge_debug_ll_config(VXGE_TRACE,
					"%s: vpath: %d available",
					VXGE_DRIVER_NAME, i);
				no_of_vpaths++;
			}
		} else {
			vxge_debug_ll_config(VXGE_TRACE,
				"%s: vpath: %d is not configured, "
				"max_config_vpath exceeded",
				VXGE_DRIVER_NAME, i);
			break;
		}

		/* Configure Tx fifo's */
		device_config->vp_config[i].fifo.enable =
						VXGE_HW_FIFO_ENABLE;
		device_config->vp_config[i].fifo.max_frags =
				MAX_SKB_FRAGS;
		device_config->vp_config[i].fifo.memblock_size =
			VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;

		txdl_size = MAX_SKB_FRAGS * sizeof(struct vxge_hw_fifo_txd);
		txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;

		device_config->vp_config[i].fifo.fifo_blocks =
			((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;

		device_config->vp_config[i].fifo.intr =
				VXGE_HW_FIFO_QUEUE_INTR_DISABLE;

		/* Configure tti properties */
		device_config->vp_config[i].tti.intr_enable =
					VXGE_HW_TIM_INTR_ENABLE;

		device_config->vp_config[i].tti.btimer_val =
			(VXGE_TTI_BTIMER_VAL * 1000) / 272;

		device_config->vp_config[i].tti.timer_ac_en =
				VXGE_HW_TIM_TIMER_AC_ENABLE;

		/* For msi-x with napi (each vector
		has a handler of its own) -
		Set CI to OFF for all vpaths */
		device_config->vp_config[i].tti.timer_ci_en =
			VXGE_HW_TIM_TIMER_CI_DISABLE;

		device_config->vp_config[i].tti.timer_ri_en =
				VXGE_HW_TIM_TIMER_RI_DISABLE;

		device_config->vp_config[i].tti.util_sel =
			VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;

		device_config->vp_config[i].tti.ltimer_val =
			(VXGE_TTI_LTIMER_VAL * 1000) / 272;

		device_config->vp_config[i].tti.rtimer_val =
			(VXGE_TTI_RTIMER_VAL * 1000) / 272;

		device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
		device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
		device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
		device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
		device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
		device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
		device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;

		/* Configure Rx rings */
		device_config->vp_config[i].ring.enable  =
						VXGE_HW_RING_ENABLE;

		device_config->vp_config[i].ring.ring_blocks  =
						VXGE_HW_DEF_RING_BLOCKS;
		device_config->vp_config[i].ring.buffer_mode =
			VXGE_HW_RING_RXD_BUFFER_MODE_1;
		device_config->vp_config[i].ring.rxds_limit  =
				VXGE_HW_DEF_RING_RXDS_LIMIT;
		device_config->vp_config[i].ring.scatter_mode =
					VXGE_HW_RING_SCATTER_MODE_A;

		/* Configure rti properties */
		device_config->vp_config[i].rti.intr_enable =
					VXGE_HW_TIM_INTR_ENABLE;

		device_config->vp_config[i].rti.btimer_val =
			(VXGE_RTI_BTIMER_VAL * 1000)/272;

		device_config->vp_config[i].rti.timer_ac_en =
						VXGE_HW_TIM_TIMER_AC_ENABLE;

		device_config->vp_config[i].rti.timer_ci_en =
						VXGE_HW_TIM_TIMER_CI_DISABLE;

		device_config->vp_config[i].rti.timer_ri_en =
						VXGE_HW_TIM_TIMER_RI_DISABLE;

		device_config->vp_config[i].rti.util_sel =
				VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;

		device_config->vp_config[i].rti.urange_a =
						RTI_RX_URANGE_A;
		device_config->vp_config[i].rti.urange_b =
						RTI_RX_URANGE_B;
		device_config->vp_config[i].rti.urange_c =
						RTI_RX_URANGE_C;
		device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
		device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
		device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
		device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;

		device_config->vp_config[i].rti.rtimer_val =
			(VXGE_RTI_RTIMER_VAL * 1000) / 272;

		device_config->vp_config[i].rti.ltimer_val =
			(VXGE_RTI_LTIMER_VAL * 1000) / 272;

		device_config->vp_config[i].rpa_strip_vlan_tag =
			vlan_tag_strip;
	}

	driver_config->vpath_per_dev = temp;
	return no_of_vpaths;
}

/* initialize device configuratrions */
static void __devinit vxge_device_config_init(
				struct vxge_hw_device_config *device_config,
				int *intr_type)
{
	/* Used for CQRQ/SRQ. */
	device_config->dma_blockpool_initial =
			VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;

	device_config->dma_blockpool_max =
			VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;

	if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
		max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;

#ifndef CONFIG_PCI_MSI
	vxge_debug_init(VXGE_ERR,
		"%s: This Kernel does not support "
		"MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
	*intr_type = INTA;
#endif

	/* Configure whether MSI-X or IRQL. */
	switch (*intr_type) {
	case INTA:
		device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
		break;

	case MSI_X:
		device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX;
		break;
	}
	/* Timer period between device poll */
	device_config->device_poll_millis = VXGE_TIMER_DELAY;

	/* Configure mac based steering. */
	device_config->rts_mac_en = addr_learn_en;

	/* Configure Vpaths */
	device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;

	vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
			__func__);
	vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d",
			device_config->dma_blockpool_initial);
	vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d",
			device_config->dma_blockpool_max);
	vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
			device_config->intr_mode);
	vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
			device_config->device_poll_millis);
	vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d",
			device_config->rts_mac_en);
	vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
			device_config->rth_en);
	vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
			device_config->rth_it_type);
}

static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
{
	int i;

	vxge_debug_init(VXGE_TRACE,
		"%s: %d Vpath(s) opened",
		vdev->ndev->name, vdev->no_of_vpath);

	switch (vdev->config.intr_type) {
	case INTA:
		vxge_debug_init(VXGE_TRACE,
			"%s: Interrupt type INTA", vdev->ndev->name);
		break;

	case MSI_X:
		vxge_debug_init(VXGE_TRACE,
			"%s: Interrupt type MSI-X", vdev->ndev->name);
		break;
	}

	if (vdev->config.rth_steering) {
		vxge_debug_init(VXGE_TRACE,
			"%s: RTH steering enabled for TCP_IPV4",
			vdev->ndev->name);
	} else {
		vxge_debug_init(VXGE_TRACE,
			"%s: RTH steering disabled", vdev->ndev->name);
	}

	switch (vdev->config.tx_steering_type) {
	case NO_STEERING:
		vxge_debug_init(VXGE_TRACE,
			"%s: Tx steering disabled", vdev->ndev->name);
		break;
	case TX_PRIORITY_STEERING:
		vxge_debug_init(VXGE_TRACE,
			"%s: Unsupported tx steering option",
			vdev->ndev->name);
		vxge_debug_init(VXGE_TRACE,
			"%s: Tx steering disabled", vdev->ndev->name);
		vdev->config.tx_steering_type = 0;
		break;
	case TX_VLAN_STEERING:
		vxge_debug_init(VXGE_TRACE,
			"%s: Unsupported tx steering option",
			vdev->ndev->name);
		vxge_debug_init(VXGE_TRACE,
			"%s: Tx steering disabled", vdev->ndev->name);
		vdev->config.tx_steering_type = 0;
		break;
	case TX_MULTIQ_STEERING:
		vxge_debug_init(VXGE_TRACE,
			"%s: Tx multiqueue steering enabled",
			vdev->ndev->name);
		break;
	case TX_PORT_STEERING:
		vxge_debug_init(VXGE_TRACE,
			"%s: Tx port steering enabled",
			vdev->ndev->name);
		break;
	default:
		vxge_debug_init(VXGE_ERR,
			"%s: Unsupported tx steering type",
			vdev->ndev->name);
		vxge_debug_init(VXGE_TRACE,
			"%s: Tx steering disabled", vdev->ndev->name);
		vdev->config.tx_steering_type = 0;
	}

	if (vdev->config.gro_enable) {
		vxge_debug_init(VXGE_ERR,
			"%s: Generic receive offload enabled",
			vdev->ndev->name);
	} else
		vxge_debug_init(VXGE_TRACE,
			"%s: Generic receive offload disabled",
			vdev->ndev->name);

	if (vdev->config.addr_learn_en)
		vxge_debug_init(VXGE_TRACE,
			"%s: MAC Address learning enabled", vdev->ndev->name);

	vxge_debug_init(VXGE_TRACE,
		"%s: Rx doorbell mode enabled", vdev->ndev->name);

	for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
		if (!vxge_bVALn(vpath_mask, i, 1))
			continue;
		vxge_debug_ll_config(VXGE_TRACE,
			"%s: MTU size - %d", vdev->ndev->name,
			((struct __vxge_hw_device  *)(vdev->devh))->
				config.vp_config[i].mtu);
		vxge_debug_init(VXGE_TRACE,
			"%s: VLAN tag stripping %s", vdev->ndev->name,
			((struct __vxge_hw_device  *)(vdev->devh))->
				config.vp_config[i].rpa_strip_vlan_tag
			? "Enabled" : "Disabled");
		vxge_debug_init(VXGE_TRACE,
			"%s: Ring blocks : %d", vdev->ndev->name,
			((struct __vxge_hw_device  *)(vdev->devh))->
				config.vp_config[i].ring.ring_blocks);
		vxge_debug_init(VXGE_TRACE,
			"%s: Fifo blocks : %d", vdev->ndev->name,
			((struct __vxge_hw_device  *)(vdev->devh))->
				config.vp_config[i].fifo.fifo_blocks);
		vxge_debug_ll_config(VXGE_TRACE,
			"%s: Max frags : %d", vdev->ndev->name,
			((struct __vxge_hw_device  *)(vdev->devh))->
				config.vp_config[i].fifo.max_frags);
		break;
	}
}

#ifdef CONFIG_PM
/**
 * vxge_pm_suspend - vxge power management suspend entry point
 *
 */
static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
{
	return -ENOSYS;
}
/**
 * vxge_pm_resume - vxge power management resume entry point
 *
 */
static int vxge_pm_resume(struct pci_dev *pdev)
{
	return -ENOSYS;
}

#endif

/**
 * vxge_io_error_detected - called when PCI error is detected
 * @pdev: Pointer to PCI device
 * @state: The current pci connection state
 *
 * This function is called after a PCI bus error affecting
 * this device has been detected.
 */
static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
						pci_channel_state_t state)
{
	struct __vxge_hw_device  *hldev =
		(struct __vxge_hw_device  *) pci_get_drvdata(pdev);
	struct net_device *netdev = hldev->ndev;

	netif_device_detach(netdev);

	if (netif_running(netdev)) {
		/* Bring down the card, while avoiding PCI I/O */
		do_vxge_close(netdev, 0);
	}

	pci_disable_device(pdev);

	return PCI_ERS_RESULT_NEED_RESET;
}

/**
 * vxge_io_slot_reset - called after the pci bus has been reset.
 * @pdev: Pointer to PCI device
 *
 * Restart the card from scratch, as if from a cold-boot.
 * At this point, the card has exprienced a hard reset,
 * followed by fixups by BIOS, and has its config space
 * set up identically to what it was at cold boot.
 */
static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
{
	struct __vxge_hw_device  *hldev =
		(struct __vxge_hw_device  *) pci_get_drvdata(pdev);
	struct net_device *netdev = hldev->ndev;

	struct vxgedev *vdev = netdev_priv(netdev);

	if (pci_enable_device(pdev)) {
		printk(KERN_ERR "%s: "
			"Cannot re-enable device after reset\n",
			VXGE_DRIVER_NAME);
		return PCI_ERS_RESULT_DISCONNECT;
	}

	pci_set_master(pdev);
	vxge_reset(vdev);

	return PCI_ERS_RESULT_RECOVERED;
}

/**
 * vxge_io_resume - called when traffic can start flowing again.
 * @pdev: Pointer to PCI device
 *
 * This callback is called when the error recovery driver tells
 * us that its OK to resume normal operation.
 */
static void vxge_io_resume(struct pci_dev *pdev)
{
	struct __vxge_hw_device  *hldev =
		(struct __vxge_hw_device  *) pci_get_drvdata(pdev);
	struct net_device *netdev = hldev->ndev;

	if (netif_running(netdev)) {
		if (vxge_open(netdev)) {
			printk(KERN_ERR "%s: "
				"Can't bring device back up after reset\n",
				VXGE_DRIVER_NAME);
			return;
		}
	}

	netif_device_attach(netdev);
}

/**
 * vxge_probe
 * @pdev : structure containing the PCI related information of the device.
 * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
 * Description:
 * This function is called when a new PCI device gets detected and initializes
 * it.
 * Return value:
 * returns 0 on success and negative on failure.
 *
 */
static int __devinit
vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
{
	struct __vxge_hw_device  *hldev;
	enum vxge_hw_status status;
	int ret;
	int high_dma = 0;
	u64 vpath_mask = 0;
	struct vxgedev *vdev;
	struct vxge_config ll_config;
	struct vxge_hw_device_config *device_config = NULL;
	struct vxge_hw_device_attr attr;
	int i, j, no_of_vpath = 0, max_vpath_supported = 0;
	u8 *macaddr;
	struct vxge_mac_addrs *entry;
	static int bus = -1, device = -1;
	u8 new_device = 0;

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
	attr.pdev = pdev;

	if (bus != pdev->bus->number)
		new_device = 1;
	if (device != PCI_SLOT(pdev->devfn))
		new_device = 1;

	bus = pdev->bus->number;
	device = PCI_SLOT(pdev->devfn);

	if (new_device) {
		if (driver_config->config_dev_cnt &&
		   (driver_config->config_dev_cnt !=
			driver_config->total_dev_cnt))
			vxge_debug_init(VXGE_ERR,
				"%s: Configured %d of %d devices",
				VXGE_DRIVER_NAME,
				driver_config->config_dev_cnt,
				driver_config->total_dev_cnt);
		driver_config->config_dev_cnt = 0;
		driver_config->total_dev_cnt = 0;
		driver_config->g_no_cpus = 0;
		driver_config->vpath_per_dev = max_config_vpath;
	}

	driver_config->total_dev_cnt++;
	if (++driver_config->config_dev_cnt > max_config_dev) {
		ret = 0;
		goto _exit0;
	}

	device_config = kzalloc(sizeof(struct vxge_hw_device_config),
		GFP_KERNEL);
	if (!device_config) {
		ret = -ENOMEM;
		vxge_debug_init(VXGE_ERR,
			"device_config : malloc failed %s %d",
			__FILE__, __LINE__);
		goto _exit0;
	}

	memset(&ll_config, 0, sizeof(struct vxge_config));
	ll_config.tx_steering_type = TX_MULTIQ_STEERING;
	ll_config.intr_type = MSI_X;
	ll_config.napi_weight = NEW_NAPI_WEIGHT;
	ll_config.rth_steering = RTH_STEERING;

	/* get the default configuration parameters */
	vxge_hw_device_config_default_get(device_config);

	/* initialize configuration parameters */
	vxge_device_config_init(device_config, &ll_config.intr_type);

	ret = pci_enable_device(pdev);
	if (ret) {
		vxge_debug_init(VXGE_ERR,
			"%s : can not enable PCI device", __func__);
		goto _exit0;
	}

	if (!pci_set_dma_mask(pdev, 0xffffffffffffffffULL)) {
		vxge_debug_ll_config(VXGE_TRACE,
			"%s : using 64bit DMA", __func__);

		high_dma = 1;

		if (pci_set_consistent_dma_mask(pdev,
						0xffffffffffffffffULL)) {
			vxge_debug_init(VXGE_ERR,
				"%s : unable to obtain 64bit DMA for "
				"consistent allocations", __func__);
			ret = -ENOMEM;
			goto _exit1;
		}
	} else if (!pci_set_dma_mask(pdev, 0xffffffffUL)) {
		vxge_debug_ll_config(VXGE_TRACE,
			"%s : using 32bit DMA", __func__);
	} else {
		ret = -ENOMEM;
		goto _exit1;
	}

	if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) {
		vxge_debug_init(VXGE_ERR,
			"%s : request regions failed", __func__);
		ret = -ENODEV;
		goto _exit1;
	}

	pci_set_master(pdev);

	attr.bar0 = pci_ioremap_bar(pdev, 0);
	if (!attr.bar0) {
		vxge_debug_init(VXGE_ERR,
			"%s : cannot remap io memory bar0", __func__);
		ret = -ENODEV;
		goto _exit2;
	}
	vxge_debug_ll_config(VXGE_TRACE,
		"pci ioremap bar0: %p:0x%llx",
		attr.bar0,
		(unsigned long long)pci_resource_start(pdev, 0));

	attr.bar1 = pci_ioremap_bar(pdev, 2);
	if (!attr.bar1) {
		vxge_debug_init(VXGE_ERR,
			"%s : cannot remap io memory bar2", __func__);
		ret = -ENODEV;
		goto _exit3;
	}
	vxge_debug_ll_config(VXGE_TRACE,
		"pci ioremap bar1: %p:0x%llx",
		attr.bar1,
		(unsigned long long)pci_resource_start(pdev, 2));

	status = vxge_hw_device_hw_info_get(attr.bar0,
			&ll_config.device_hw_info);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
			"%s: Reading of hardware info failed."
			"Please try upgrading the firmware.", VXGE_DRIVER_NAME);
		ret = -EINVAL;
		goto _exit4;
	}

	if (ll_config.device_hw_info.fw_version.major !=
		VXGE_DRIVER_VERSION_MAJOR) {
		vxge_debug_init(VXGE_ERR,
			"FW Ver.(maj): %d not driver's expected version: %d",
			ll_config.device_hw_info.fw_version.major,
			VXGE_DRIVER_VERSION_MAJOR);
		ret = -EINVAL;
		goto _exit4;
	}

	vpath_mask = ll_config.device_hw_info.vpath_mask;
	if (vpath_mask == 0) {
		vxge_debug_ll_config(VXGE_TRACE,
			"%s: No vpaths available in device", VXGE_DRIVER_NAME);
		ret = -EINVAL;
		goto _exit4;
	}

	vxge_debug_ll_config(VXGE_TRACE,
		"%s:%d  Vpath mask = %llx", __func__, __LINE__,
		(unsigned long long)vpath_mask);

	/* Check how many vpaths are available */
	for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
		if (!((vpath_mask) & vxge_mBIT(i)))
			continue;
		max_vpath_supported++;
	}

	/*
	 * Configure vpaths and get driver configured number of vpaths
	 * which is less than or equal to the maximum vpaths per function.
	 */
	no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, &ll_config);
	if (!no_of_vpath) {
		vxge_debug_ll_config(VXGE_ERR,
			"%s: No more vpaths to configure", VXGE_DRIVER_NAME);
		ret = 0;
		goto _exit4;
	}

	/* Setting driver callbacks */
	attr.uld_callbacks.link_up = vxge_callback_link_up;
	attr.uld_callbacks.link_down = vxge_callback_link_down;
	attr.uld_callbacks.crit_err = vxge_callback_crit_err;

	status = vxge_hw_device_initialize(&hldev, &attr, device_config);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
			"Failed to initialize device (%d)", status);
			ret = -EINVAL;
			goto _exit4;
	}

	vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);

	/* set private device info */
	pci_set_drvdata(pdev, hldev);

	ll_config.gro_enable = VXGE_GRO_ALWAYS_AGGREGATE;
	ll_config.fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
	ll_config.addr_learn_en = addr_learn_en;
	ll_config.rth_algorithm = RTH_ALG_JENKINS;
	ll_config.rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4;
	ll_config.rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE;
	ll_config.rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
	ll_config.rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE;
	ll_config.rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
	ll_config.rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE;
	ll_config.rth_bkt_sz = RTH_BUCKET_SIZE;
	ll_config.tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
	ll_config.rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;

	if (vxge_device_register(hldev, &ll_config, high_dma, no_of_vpath,
		&vdev)) {
		ret = -EINVAL;
		goto _exit5;
	}

	vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
	VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
		vxge_hw_device_trace_level_get(hldev));

	/* set private HW device info */
	hldev->ndev = vdev->ndev;
	vdev->mtu = VXGE_HW_DEFAULT_MTU;
	vdev->bar0 = attr.bar0;
	vdev->bar1 = attr.bar1;
	vdev->max_vpath_supported = max_vpath_supported;
	vdev->no_of_vpath = no_of_vpath;

	/* Virtual Path count */
	for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
		if (!vxge_bVALn(vpath_mask, i, 1))
			continue;
		if (j >= vdev->no_of_vpath)
			break;

		vdev->vpaths[j].is_configured = 1;
		vdev->vpaths[j].device_id = i;
		vdev->vpaths[j].fifo.driver_id = j;
		vdev->vpaths[j].ring.driver_id = j;
		vdev->vpaths[j].vdev = vdev;
		vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
		memcpy((u8 *)vdev->vpaths[j].macaddr,
				(u8 *)ll_config.device_hw_info.mac_addrs[i],
				ETH_ALEN);

		/* Initialize the mac address list header */
		INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);

		vdev->vpaths[j].mac_addr_cnt = 0;
		vdev->vpaths[j].mcast_addr_cnt = 0;
		j++;
	}
	vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
	vdev->max_config_port = max_config_port;

	vdev->vlan_tag_strip = vlan_tag_strip;

	/* map the hashing selector table to the configured vpaths */
	for (i = 0; i < vdev->no_of_vpath; i++)
		vdev->vpath_selector[i] = vpath_selector[i];

	macaddr = (u8 *)vdev->vpaths[0].macaddr;

	ll_config.device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
	ll_config.device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
	ll_config.device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';

	vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
		vdev->ndev->name, ll_config.device_hw_info.serial_number);

	vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
		vdev->ndev->name, ll_config.device_hw_info.part_number);

	vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
		vdev->ndev->name, ll_config.device_hw_info.product_desc);

	vxge_debug_init(VXGE_TRACE,
		"%s: MAC ADDR: %02X:%02X:%02X:%02X:%02X:%02X",
		vdev->ndev->name, macaddr[0], macaddr[1], macaddr[2],
		macaddr[3], macaddr[4], macaddr[5]);

	vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
		vdev->ndev->name, vxge_hw_device_link_width_get(hldev));

	vxge_debug_init(VXGE_TRACE,
		"%s: Firmware version : %s Date : %s", vdev->ndev->name,
		ll_config.device_hw_info.fw_version.version,
		ll_config.device_hw_info.fw_date.date);

	vxge_print_parm(vdev, vpath_mask);

	/* Store the fw version for ethttool option */
	strcpy(vdev->fw_version, ll_config.device_hw_info.fw_version.version);
	memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
	memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN);

	/* Copy the station mac address to the list */
	for (i = 0; i < vdev->no_of_vpath; i++) {
		entry =	(struct vxge_mac_addrs *)
				kzalloc(sizeof(struct vxge_mac_addrs),
					GFP_KERNEL);
		if (NULL == entry) {
			vxge_debug_init(VXGE_ERR,
				"%s: mac_addr_list : memory allocation failed",
				vdev->ndev->name);
			ret = -EPERM;
			goto _exit6;
		}
		macaddr = (u8 *)&entry->macaddr;
		memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
		list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
		vdev->vpaths[i].mac_addr_cnt = 1;
	}

	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
		vdev->ndev->name, __func__, __LINE__);

	vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
	VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
		vxge_hw_device_trace_level_get(hldev));

	return 0;

_exit6:
	for (i = 0; i < vdev->no_of_vpath; i++)
		vxge_free_mac_add_list(&vdev->vpaths[i]);

	vxge_device_unregister(hldev);
_exit5:
	vxge_hw_device_terminate(hldev);
_exit4:
	iounmap(attr.bar1);
_exit3:
	iounmap(attr.bar0);
_exit2:
	pci_release_regions(pdev);
_exit1:
	pci_disable_device(pdev);
_exit0:
	kfree(device_config);
	driver_config->config_dev_cnt--;
	pci_set_drvdata(pdev, NULL);
	return ret;
}

/**
 * vxge_rem_nic - Free the PCI device
 * @pdev: structure containing the PCI related information of the device.
 * Description: This function is called by the Pci subsystem to release a
 * PCI device and free up all resource held up by the device.
 */
static void __devexit
vxge_remove(struct pci_dev *pdev)
{
	struct __vxge_hw_device  *hldev;
	struct vxgedev *vdev = NULL;
	struct net_device *dev;
	int i = 0;
#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
	(VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
	u32 level_trace;
#endif

	hldev = (struct __vxge_hw_device  *) pci_get_drvdata(pdev);

	if (hldev == NULL)
		return;
	dev = hldev->ndev;
	vdev = netdev_priv(dev);

#if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \
	(VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK))
	level_trace = vdev->level_trace;
#endif
	vxge_debug_entryexit(level_trace,
		"%s:%d", __func__, __LINE__);

	vxge_debug_init(level_trace,
		"%s : removing PCI device...", __func__);
	vxge_device_unregister(hldev);

	for (i = 0; i < vdev->no_of_vpath; i++) {
		vxge_free_mac_add_list(&vdev->vpaths[i]);
		vdev->vpaths[i].mcast_addr_cnt = 0;
		vdev->vpaths[i].mac_addr_cnt = 0;
	}

	kfree(vdev->vpaths);

	iounmap(vdev->bar0);
	iounmap(vdev->bar1);

	/* we are safe to free it now */
	free_netdev(dev);

	vxge_debug_init(level_trace,
		"%s:%d  Device unregistered", __func__, __LINE__);

	vxge_hw_device_terminate(hldev);

	pci_disable_device(pdev);
	pci_release_regions(pdev);
	pci_set_drvdata(pdev, NULL);
	vxge_debug_entryexit(level_trace,
		"%s:%d  Exiting...", __func__, __LINE__);
}

static struct pci_error_handlers vxge_err_handler = {
	.error_detected = vxge_io_error_detected,
	.slot_reset = vxge_io_slot_reset,
	.resume = vxge_io_resume,
};

static struct pci_driver vxge_driver = {
	.name = VXGE_DRIVER_NAME,
	.id_table = vxge_id_table,
	.probe = vxge_probe,
	.remove = __devexit_p(vxge_remove),
#ifdef CONFIG_PM
	.suspend = vxge_pm_suspend,
	.resume = vxge_pm_resume,
#endif
	.err_handler = &vxge_err_handler,
};

static int __init
vxge_starter(void)
{
	int ret = 0;
	char version[32];
	snprintf(version, 32, "%s", DRV_VERSION);

	printk(KERN_CRIT "%s: Copyright(c) 2002-2009 Neterion Inc\n",
		VXGE_DRIVER_NAME);
	printk(KERN_CRIT "%s: Driver version: %s\n",
			VXGE_DRIVER_NAME, version);

	verify_bandwidth();

	driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
	if (!driver_config)
		return -ENOMEM;

	ret = pci_register_driver(&vxge_driver);

	if (driver_config->config_dev_cnt &&
	   (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
		vxge_debug_init(VXGE_ERR,
			"%s: Configured %d of %d devices",
			VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
			driver_config->total_dev_cnt);

	if (ret)
		kfree(driver_config);

	return ret;
}

static void __exit
vxge_closer(void)
{
	pci_unregister_driver(&vxge_driver);
	kfree(driver_config);
}
module_init(vxge_starter);
module_exit(vxge_closer);
OpenPOWER on IntegriCloud