summaryrefslogtreecommitdiff
path: root/drivers/scsi/bfa/bfa_fcs.c
blob: 141215c51635a3842f0a8da5a8d55f6b72409a1b (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
/*
 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
 * All rights reserved
 * www.brocade.com
 *
 * Linux driver for Brocade Fibre Channel Host Bus Adapter.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License (GPL) Version 2 as
 * published by the Free Software Foundation
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

/*
 *  bfa_fcs.c BFA FCS main
 */

#include "bfa_fcs.h"
#include "bfa_fcbuild.h"
#include "bfad_drv.h"

BFA_TRC_FILE(FCS, FCS);

/*
 * FCS sub-modules
 */
struct bfa_fcs_mod_s {
	void		(*attach) (struct bfa_fcs_s *fcs);
	void		(*modinit) (struct bfa_fcs_s *fcs);
	void		(*modexit) (struct bfa_fcs_s *fcs);
};

#define BFA_FCS_MODULE(_mod) { _mod ## _modinit, _mod ## _modexit }

static struct bfa_fcs_mod_s fcs_modules[] = {
	{ bfa_fcs_port_attach, NULL, NULL },
	{ bfa_fcs_uf_attach, NULL, NULL },
	{ bfa_fcs_fabric_attach, bfa_fcs_fabric_modinit,
	  bfa_fcs_fabric_modexit },
};

/*
 *  fcs_api BFA FCS API
 */

static void
bfa_fcs_exit_comp(void *fcs_cbarg)
{
	struct bfa_fcs_s      *fcs = fcs_cbarg;
	struct bfad_s         *bfad = fcs->bfad;

	complete(&bfad->comp);
}



/*
 *  fcs_api BFA FCS API
 */

/*
 * fcs attach -- called once to initialize data structures at driver attach time
 */
void
bfa_fcs_attach(struct bfa_fcs_s *fcs, struct bfa_s *bfa, struct bfad_s *bfad,
	       bfa_boolean_t min_cfg)
{
	int		i;
	struct bfa_fcs_mod_s  *mod;

	fcs->bfa = bfa;
	fcs->bfad = bfad;
	fcs->min_cfg = min_cfg;

	bfa->fcs = BFA_TRUE;
	fcbuild_init();

	for (i = 0; i < sizeof(fcs_modules) / sizeof(fcs_modules[0]); i++) {
		mod = &fcs_modules[i];
		if (mod->attach)
			mod->attach(fcs);
	}
}

/*
 * fcs initialization, called once after bfa initialization is complete
 */
void
bfa_fcs_init(struct bfa_fcs_s *fcs)
{
	int		i, npbc_vports;
	struct bfa_fcs_mod_s  *mod;
	struct bfi_pbc_vport_s pbc_vports[BFI_PBC_MAX_VPORTS];

	for (i = 0; i < sizeof(fcs_modules) / sizeof(fcs_modules[0]); i++) {
		mod = &fcs_modules[i];
		if (mod->modinit)
			mod->modinit(fcs);
	}
	/* Initialize pbc vports */
	if (!fcs->min_cfg) {
		npbc_vports =
		    bfa_iocfc_get_pbc_vports(fcs->bfa, pbc_vports);
		for (i = 0; i < npbc_vports; i++)
			bfa_fcb_pbc_vport_create(fcs->bfa->bfad, pbc_vports[i]);
	}
}


/*
 *	brief
 *		FCS driver details initialization.
 *
 *	param[in]		fcs		FCS instance
 *	param[in]		driver_info	Driver Details
 *
 *	return None
 */
void
bfa_fcs_driver_info_init(struct bfa_fcs_s *fcs,
			struct bfa_fcs_driver_info_s *driver_info)
{

	fcs->driver_info = *driver_info;

	bfa_fcs_fabric_psymb_init(&fcs->fabric);
}

/*
 *	brief
 *		FCS instance cleanup and exit.
 *
 *	param[in]		fcs			FCS instance
 *	return None
 */
void
bfa_fcs_exit(struct bfa_fcs_s *fcs)
{
	struct bfa_fcs_mod_s  *mod;
	int		nmods, i;

	bfa_wc_init(&fcs->wc, bfa_fcs_exit_comp, fcs);

	nmods = sizeof(fcs_modules) / sizeof(fcs_modules[0]);

	for (i = 0; i < nmods; i++) {

		mod = &fcs_modules[i];
		if (mod->modexit) {
			bfa_wc_up(&fcs->wc);
			mod->modexit(fcs);
		}
	}

	bfa_wc_wait(&fcs->wc);
}


/*
 * Fabric module implementation.
 */

#define BFA_FCS_FABRIC_RETRY_DELAY	(2000)	/* Milliseconds */
#define BFA_FCS_FABRIC_CLEANUP_DELAY	(10000)	/* Milliseconds */

#define bfa_fcs_fabric_set_opertype(__fabric) do {			\
		if (bfa_fcport_get_topology((__fabric)->fcs->bfa)	\
		    == BFA_PORT_TOPOLOGY_P2P)				\
			(__fabric)->oper_type = BFA_PORT_TYPE_NPORT;	\
		else							\
			(__fabric)->oper_type = BFA_PORT_TYPE_NLPORT;	\
} while (0)

/*
 * forward declarations
 */
static void bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric);
static void bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric);
static void bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric);
static void bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric);
static void bfa_fcs_fabric_delay(void *cbarg);
static void bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric);
static void bfa_fcs_fabric_delete_comp(void *cbarg);
static void bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric,
				      struct fchs_s *fchs, u16 len);
static void bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
					 struct fchs_s *fchs, u16 len);
static void bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric);
static void bfa_fcs_fabric_flogiacc_comp(void *fcsarg,
					 struct bfa_fcxp_s *fcxp, void *cbarg,
					 bfa_status_t status,
					 u32 rsp_len,
					 u32 resid_len,
					 struct fchs_s *rspfchs);

static void	bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
					 enum bfa_fcs_fabric_event event);
static void	bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
					  enum bfa_fcs_fabric_event event);
static void	bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
					   enum bfa_fcs_fabric_event event);
static void	bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
					enum bfa_fcs_fabric_event event);
static void	bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
					      enum bfa_fcs_fabric_event event);
static void	bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
				       enum bfa_fcs_fabric_event event);
static void	bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
					   enum bfa_fcs_fabric_event event);
static void	bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
				       enum bfa_fcs_fabric_event event);
static void	bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
					    enum bfa_fcs_fabric_event event);
static void	bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
					   enum bfa_fcs_fabric_event event);
static void	bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
					   enum bfa_fcs_fabric_event event);
/*
 *   Beginning state before fabric creation.
 */
static void
bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
			 enum bfa_fcs_fabric_event event)
{
	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_trc(fabric->fcs, event);

	switch (event) {
	case BFA_FCS_FABRIC_SM_CREATE:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
		bfa_fcs_fabric_init(fabric);
		bfa_fcs_lport_init(&fabric->bport, &fabric->bport.port_cfg);
		break;

	case BFA_FCS_FABRIC_SM_LINK_UP:
	case BFA_FCS_FABRIC_SM_LINK_DOWN:
		break;

	default:
		bfa_sm_fault(fabric->fcs, event);
	}
}

/*
 *   Beginning state before fabric creation.
 */
static void
bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
			  enum bfa_fcs_fabric_event event)
{
	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_trc(fabric->fcs, event);

	switch (event) {
	case BFA_FCS_FABRIC_SM_START:
		if (bfa_fcport_is_linkup(fabric->fcs->bfa)) {
			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
			bfa_fcs_fabric_login(fabric);
		} else
			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
		break;

	case BFA_FCS_FABRIC_SM_LINK_UP:
	case BFA_FCS_FABRIC_SM_LINK_DOWN:
		break;

	case BFA_FCS_FABRIC_SM_DELETE:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
		bfa_wc_down(&fabric->fcs->wc);
		break;

	default:
		bfa_sm_fault(fabric->fcs, event);
	}
}

/*
 *   Link is down, awaiting LINK UP event from port. This is also the
 *   first state at fabric creation.
 */
static void
bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
			   enum bfa_fcs_fabric_event event)
{
	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_trc(fabric->fcs, event);

	switch (event) {
	case BFA_FCS_FABRIC_SM_LINK_UP:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
		bfa_fcs_fabric_login(fabric);
		break;

	case BFA_FCS_FABRIC_SM_RETRY_OP:
		break;

	case BFA_FCS_FABRIC_SM_DELETE:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
		bfa_fcs_fabric_delete(fabric);
		break;

	default:
		bfa_sm_fault(fabric->fcs, event);
	}
}

/*
 *   FLOGI is in progress, awaiting FLOGI reply.
 */
static void
bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
			enum bfa_fcs_fabric_event event)
{
	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_trc(fabric->fcs, event);

	switch (event) {
	case BFA_FCS_FABRIC_SM_CONT_OP:

		bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
					   fabric->bb_credit);
		fabric->fab_type = BFA_FCS_FABRIC_SWITCHED;

		if (fabric->auth_reqd && fabric->is_auth) {
			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth);
			bfa_trc(fabric->fcs, event);
		} else {
			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
			bfa_fcs_fabric_notify_online(fabric);
		}
		break;

	case BFA_FCS_FABRIC_SM_RETRY_OP:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi_retry);
		bfa_timer_start(fabric->fcs->bfa, &fabric->delay_timer,
				bfa_fcs_fabric_delay, fabric,
				BFA_FCS_FABRIC_RETRY_DELAY);
		break;

	case BFA_FCS_FABRIC_SM_LOOPBACK:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_loopback);
		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
		bfa_fcs_fabric_set_opertype(fabric);
		break;

	case BFA_FCS_FABRIC_SM_NO_FABRIC:
		fabric->fab_type = BFA_FCS_FABRIC_N2N;
		bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
					   fabric->bb_credit);
		bfa_fcs_fabric_notify_online(fabric);
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_nofabric);
		break;

	case BFA_FCS_FABRIC_SM_LINK_DOWN:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
		break;

	case BFA_FCS_FABRIC_SM_DELETE:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
		bfa_fcs_fabric_delete(fabric);
		break;

	default:
		bfa_sm_fault(fabric->fcs, event);
	}
}


static void
bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
			      enum bfa_fcs_fabric_event event)
{
	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_trc(fabric->fcs, event);

	switch (event) {
	case BFA_FCS_FABRIC_SM_DELAYED:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
		bfa_fcs_fabric_login(fabric);
		break;

	case BFA_FCS_FABRIC_SM_LINK_DOWN:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
		bfa_timer_stop(&fabric->delay_timer);
		break;

	case BFA_FCS_FABRIC_SM_DELETE:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
		bfa_timer_stop(&fabric->delay_timer);
		bfa_fcs_fabric_delete(fabric);
		break;

	default:
		bfa_sm_fault(fabric->fcs, event);
	}
}

/*
 *   Authentication is in progress, awaiting authentication results.
 */
static void
bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
		       enum bfa_fcs_fabric_event event)
{
	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_trc(fabric->fcs, event);

	switch (event) {
	case BFA_FCS_FABRIC_SM_AUTH_FAILED:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
		break;

	case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
		bfa_fcs_fabric_notify_online(fabric);
		break;

	case BFA_FCS_FABRIC_SM_PERF_EVFP:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp);
		break;

	case BFA_FCS_FABRIC_SM_LINK_DOWN:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
		break;

	case BFA_FCS_FABRIC_SM_DELETE:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
		bfa_fcs_fabric_delete(fabric);
		break;

	default:
		bfa_sm_fault(fabric->fcs, event);
	}
}

/*
 *   Authentication failed
 */
void
bfa_fcs_fabric_sm_auth_failed(struct bfa_fcs_fabric_s *fabric,
			      enum bfa_fcs_fabric_event event)
{
	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_trc(fabric->fcs, event);

	switch (event) {
	case BFA_FCS_FABRIC_SM_LINK_DOWN:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
		bfa_fcs_fabric_notify_offline(fabric);
		break;

	case BFA_FCS_FABRIC_SM_DELETE:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
		bfa_fcs_fabric_delete(fabric);
		break;

	default:
		bfa_sm_fault(fabric->fcs, event);
	}
}

/*
 *   Port is in loopback mode.
 */
void
bfa_fcs_fabric_sm_loopback(struct bfa_fcs_fabric_s *fabric,
			   enum bfa_fcs_fabric_event event)
{
	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_trc(fabric->fcs, event);

	switch (event) {
	case BFA_FCS_FABRIC_SM_LINK_DOWN:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
		bfa_fcs_fabric_notify_offline(fabric);
		break;

	case BFA_FCS_FABRIC_SM_DELETE:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
		bfa_fcs_fabric_delete(fabric);
		break;

	default:
		bfa_sm_fault(fabric->fcs, event);
	}
}

/*
 *   There is no attached fabric - private loop or NPort-to-NPort topology.
 */
static void
bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
			   enum bfa_fcs_fabric_event event)
{
	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_trc(fabric->fcs, event);

	switch (event) {
	case BFA_FCS_FABRIC_SM_LINK_DOWN:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
		bfa_fcs_fabric_notify_offline(fabric);
		break;

	case BFA_FCS_FABRIC_SM_DELETE:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
		bfa_fcs_fabric_delete(fabric);
		break;

	case BFA_FCS_FABRIC_SM_NO_FABRIC:
		bfa_trc(fabric->fcs, fabric->bb_credit);
		bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
					   fabric->bb_credit);
		break;

	default:
		bfa_sm_fault(fabric->fcs, event);
	}
}

/*
 *   Fabric is online - normal operating state.
 */
void
bfa_fcs_fabric_sm_online(struct bfa_fcs_fabric_s *fabric,
			 enum bfa_fcs_fabric_event event)
{
	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_trc(fabric->fcs, event);

	switch (event) {
	case BFA_FCS_FABRIC_SM_LINK_DOWN:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
		bfa_fcs_fabric_notify_offline(fabric);
		break;

	case BFA_FCS_FABRIC_SM_DELETE:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
		bfa_fcs_fabric_delete(fabric);
		break;

	case BFA_FCS_FABRIC_SM_AUTH_FAILED:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
		break;

	case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
		break;

	default:
		bfa_sm_fault(fabric->fcs, event);
	}
}

/*
 *   Exchanging virtual fabric parameters.
 */
static void
bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
		       enum bfa_fcs_fabric_event event)
{
	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_trc(fabric->fcs, event);

	switch (event) {
	case BFA_FCS_FABRIC_SM_CONT_OP:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp_done);
		break;

	case BFA_FCS_FABRIC_SM_ISOLATE:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_isolated);
		break;

	default:
		bfa_sm_fault(fabric->fcs, event);
	}
}

/*
 *   EVFP exchange complete and VFT tagging is enabled.
 */
static void
bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
			    enum bfa_fcs_fabric_event event)
{
	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_trc(fabric->fcs, event);
}

/*
 *   Port is isolated after EVFP exchange due to VF_ID mismatch (N and F).
 */
static void
bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
			   enum bfa_fcs_fabric_event event)
{
	struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
	char	pwwn_ptr[BFA_STRING_32];

	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_trc(fabric->fcs, event);
	wwn2str(pwwn_ptr, fabric->bport.port_cfg.pwwn);

	BFA_LOG(KERN_INFO, bfad, bfa_log_level,
		"Port is isolated due to VF_ID mismatch. "
		"PWWN: %s Port VF_ID: %04x switch port VF_ID: %04x.",
		pwwn_ptr, fabric->fcs->port_vfid,
		fabric->event_arg.swp_vfid);
}

/*
 *   Fabric is being deleted, awaiting vport delete completions.
 */
static void
bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
			   enum bfa_fcs_fabric_event event)
{
	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_trc(fabric->fcs, event);

	switch (event) {
	case BFA_FCS_FABRIC_SM_DELCOMP:
		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
		bfa_wc_down(&fabric->fcs->wc);
		break;

	case BFA_FCS_FABRIC_SM_LINK_UP:
		break;

	case BFA_FCS_FABRIC_SM_LINK_DOWN:
		bfa_fcs_fabric_notify_offline(fabric);
		break;

	default:
		bfa_sm_fault(fabric->fcs, event);
	}
}



/*
 *  fcs_fabric_private fabric private functions
 */

static void
bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric)
{
	struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;

	port_cfg->roles = BFA_LPORT_ROLE_FCP_IM;
	port_cfg->nwwn = fabric->fcs->bfa->ioc.attr->nwwn;
	port_cfg->pwwn = fabric->fcs->bfa->ioc.attr->pwwn;
}

/*
 * Port Symbolic Name Creation for base port.
 */
void
bfa_fcs_fabric_psymb_init(struct bfa_fcs_fabric_s *fabric)
{
	struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
	char model[BFA_ADAPTER_MODEL_NAME_LEN] = {0};
	struct bfa_fcs_driver_info_s *driver_info = &fabric->fcs->driver_info;

	bfa_ioc_get_adapter_model(&fabric->fcs->bfa->ioc, model);

	/* Model name/number */
	strncpy((char *)&port_cfg->sym_name, model,
		BFA_FCS_PORT_SYMBNAME_MODEL_SZ);
	strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
		sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));

	/* Driver Version */
	strncat((char *)&port_cfg->sym_name, (char *)driver_info->version,
		BFA_FCS_PORT_SYMBNAME_VERSION_SZ);
	strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
		sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));

	/* Host machine name */
	strncat((char *)&port_cfg->sym_name,
		(char *)driver_info->host_machine_name,
		BFA_FCS_PORT_SYMBNAME_MACHINENAME_SZ);
	strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
		sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));

	/*
	 * Host OS Info :
	 * If OS Patch Info is not there, do not truncate any bytes from the
	 * OS name string and instead copy the entire OS info string (64 bytes).
	 */
	if (driver_info->host_os_patch[0] == '\0') {
		strncat((char *)&port_cfg->sym_name,
			(char *)driver_info->host_os_name,
			BFA_FCS_OS_STR_LEN);
		strncat((char *)&port_cfg->sym_name,
			BFA_FCS_PORT_SYMBNAME_SEPARATOR,
			sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
	} else {
		strncat((char *)&port_cfg->sym_name,
			(char *)driver_info->host_os_name,
			BFA_FCS_PORT_SYMBNAME_OSINFO_SZ);
		strncat((char *)&port_cfg->sym_name,
			BFA_FCS_PORT_SYMBNAME_SEPARATOR,
			sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));

		/* Append host OS Patch Info */
		strncat((char *)&port_cfg->sym_name,
			(char *)driver_info->host_os_patch,
			BFA_FCS_PORT_SYMBNAME_OSPATCH_SZ);
	}

	/* null terminate */
	port_cfg->sym_name.symname[BFA_SYMNAME_MAXLEN - 1] = 0;
}

/*
 * bfa lps login completion callback
 */
void
bfa_cb_lps_flogi_comp(void *bfad, void *uarg, bfa_status_t status)
{
	struct bfa_fcs_fabric_s *fabric = uarg;

	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_trc(fabric->fcs, status);

	switch (status) {
	case BFA_STATUS_OK:
		fabric->stats.flogi_accepts++;
		break;

	case BFA_STATUS_INVALID_MAC:
		/* Only for CNA */
		fabric->stats.flogi_acc_err++;
		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);

		return;

	case BFA_STATUS_EPROTOCOL:
		switch (fabric->lps->ext_status) {
		case BFA_EPROTO_BAD_ACCEPT:
			fabric->stats.flogi_acc_err++;
			break;

		case BFA_EPROTO_UNKNOWN_RSP:
			fabric->stats.flogi_unknown_rsp++;
			break;

		default:
			break;
		}
		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);

		return;

	case BFA_STATUS_FABRIC_RJT:
		fabric->stats.flogi_rejects++;
		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
		return;

	default:
		fabric->stats.flogi_rsp_err++;
		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
		return;
	}

	fabric->bb_credit = fabric->lps->pr_bbcred;
	bfa_trc(fabric->fcs, fabric->bb_credit);

	if (!(fabric->lps->brcd_switch))
		fabric->fabric_name =  fabric->lps->pr_nwwn;

	/*
	 * Check port type. It should be 1 = F-port.
	 */
	if (fabric->lps->fport) {
		fabric->bport.pid = fabric->lps->lp_pid;
		fabric->is_npiv = fabric->lps->npiv_en;
		fabric->is_auth = fabric->lps->auth_req;
		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_CONT_OP);
	} else {
		/*
		 * Nport-2-Nport direct attached
		 */
		fabric->bport.port_topo.pn2n.rem_port_wwn =
			fabric->lps->pr_pwwn;
		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
	}

	bfa_trc(fabric->fcs, fabric->bport.pid);
	bfa_trc(fabric->fcs, fabric->is_npiv);
	bfa_trc(fabric->fcs, fabric->is_auth);
}
/*
 *		Allocate and send FLOGI.
 */
static void
bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric)
{
	struct bfa_s		*bfa = fabric->fcs->bfa;
	struct bfa_lport_cfg_s	*pcfg = &fabric->bport.port_cfg;
	u8			alpa = 0;

	if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP)
		alpa = bfa_fcport_get_myalpa(bfa);

	bfa_lps_flogi(fabric->lps, fabric, alpa, bfa_fcport_get_maxfrsize(bfa),
		      pcfg->pwwn, pcfg->nwwn, fabric->auth_reqd);

	fabric->stats.flogi_sent++;
}

static void
bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric)
{
	struct bfa_fcs_vport_s *vport;
	struct list_head	      *qe, *qen;

	bfa_trc(fabric->fcs, fabric->fabric_name);

	bfa_fcs_fabric_set_opertype(fabric);
	fabric->stats.fabric_onlines++;

	/*
	 * notify online event to base and then virtual ports
	 */
	bfa_fcs_lport_online(&fabric->bport);

	list_for_each_safe(qe, qen, &fabric->vport_q) {
		vport = (struct bfa_fcs_vport_s *) qe;
		bfa_fcs_vport_online(vport);
	}
}

static void
bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric)
{
	struct bfa_fcs_vport_s *vport;
	struct list_head	      *qe, *qen;

	bfa_trc(fabric->fcs, fabric->fabric_name);
	fabric->stats.fabric_offlines++;

	/*
	 * notify offline event first to vports and then base port.
	 */
	list_for_each_safe(qe, qen, &fabric->vport_q) {
		vport = (struct bfa_fcs_vport_s *) qe;
		bfa_fcs_vport_offline(vport);
	}

	bfa_fcs_lport_offline(&fabric->bport);

	fabric->fabric_name = 0;
	fabric->fabric_ip_addr[0] = 0;
}

static void
bfa_fcs_fabric_delay(void *cbarg)
{
	struct bfa_fcs_fabric_s *fabric = cbarg;

	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELAYED);
}

/*
 * Delete all vports and wait for vport delete completions.
 */
static void
bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric)
{
	struct bfa_fcs_vport_s *vport;
	struct list_head	      *qe, *qen;

	list_for_each_safe(qe, qen, &fabric->vport_q) {
		vport = (struct bfa_fcs_vport_s *) qe;
		bfa_fcs_vport_fcs_delete(vport);
	}

	bfa_fcs_lport_delete(&fabric->bport);
	bfa_wc_wait(&fabric->wc);
}

static void
bfa_fcs_fabric_delete_comp(void *cbarg)
{
	struct bfa_fcs_fabric_s *fabric = cbarg;

	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELCOMP);
}

/*
 *  fcs_fabric_public fabric public functions
 */

/*
 * Attach time initialization.
 */
void
bfa_fcs_fabric_attach(struct bfa_fcs_s *fcs)
{
	struct bfa_fcs_fabric_s *fabric;

	fabric = &fcs->fabric;
	memset(fabric, 0, sizeof(struct bfa_fcs_fabric_s));

	/*
	 * Initialize base fabric.
	 */
	fabric->fcs = fcs;
	INIT_LIST_HEAD(&fabric->vport_q);
	INIT_LIST_HEAD(&fabric->vf_q);
	fabric->lps = bfa_lps_alloc(fcs->bfa);
	bfa_assert(fabric->lps);

	/*
	 * Initialize fabric delete completion handler. Fabric deletion is
	 * complete when the last vport delete is complete.
	 */
	bfa_wc_init(&fabric->wc, bfa_fcs_fabric_delete_comp, fabric);
	bfa_wc_up(&fabric->wc); /* For the base port */

	bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
	bfa_fcs_lport_attach(&fabric->bport, fabric->fcs, FC_VF_ID_NULL, NULL);
}

void
bfa_fcs_fabric_modinit(struct bfa_fcs_s *fcs)
{
	bfa_sm_send_event(&fcs->fabric, BFA_FCS_FABRIC_SM_CREATE);
	bfa_trc(fcs, 0);
}

/*
 *   Module cleanup
 */
void
bfa_fcs_fabric_modexit(struct bfa_fcs_s *fcs)
{
	struct bfa_fcs_fabric_s *fabric;

	bfa_trc(fcs, 0);

	/*
	 * Cleanup base fabric.
	 */
	fabric = &fcs->fabric;
	bfa_lps_delete(fabric->lps);
	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELETE);
}

/*
 * Fabric module start -- kick starts FCS actions
 */
void
bfa_fcs_fabric_modstart(struct bfa_fcs_s *fcs)
{
	struct bfa_fcs_fabric_s *fabric;

	bfa_trc(fcs, 0);
	fabric = &fcs->fabric;
	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_START);
}


/*
 *   Link up notification from BFA physical port module.
 */
void
bfa_fcs_fabric_link_up(struct bfa_fcs_fabric_s *fabric)
{
	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_UP);
}

/*
 *   Link down notification from BFA physical port module.
 */
void
bfa_fcs_fabric_link_down(struct bfa_fcs_fabric_s *fabric)
{
	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_DOWN);
}

/*
 *   A child vport is being created in the fabric.
 *
 *   Call from vport module at vport creation. A list of base port and vports
 *   belonging to a fabric is maintained to propagate link events.
 *
 *   param[in] fabric - Fabric instance. This can be a base fabric or vf.
 *   param[in] vport  - Vport being created.
 *
 *   @return None (always succeeds)
 */
void
bfa_fcs_fabric_addvport(struct bfa_fcs_fabric_s *fabric,
			struct bfa_fcs_vport_s *vport)
{
	/*
	 * - add vport to fabric's vport_q
	 */
	bfa_trc(fabric->fcs, fabric->vf_id);

	list_add_tail(&vport->qe, &fabric->vport_q);
	fabric->num_vports++;
	bfa_wc_up(&fabric->wc);
}

/*
 *   A child vport is being deleted from fabric.
 *
 *   Vport is being deleted.
 */
void
bfa_fcs_fabric_delvport(struct bfa_fcs_fabric_s *fabric,
			struct bfa_fcs_vport_s *vport)
{
	list_del(&vport->qe);
	fabric->num_vports--;
	bfa_wc_down(&fabric->wc);
}


/*
 * Lookup for a vport withing a fabric given its pwwn
 */
struct bfa_fcs_vport_s *
bfa_fcs_fabric_vport_lookup(struct bfa_fcs_fabric_s *fabric, wwn_t pwwn)
{
	struct bfa_fcs_vport_s *vport;
	struct list_head	      *qe;

	list_for_each(qe, &fabric->vport_q) {
		vport = (struct bfa_fcs_vport_s *) qe;
		if (bfa_fcs_lport_get_pwwn(&vport->lport) == pwwn)
			return vport;
	}

	return NULL;
}


/*
 *  Get OUI of the attached switch.
 *
 *  Note : Use of this function should be avoided as much as possible.
 *         This function should be used only if there is any requirement
*          to check for FOS version below 6.3.
 *         To check if the attached fabric is a brocade fabric, use
 *         bfa_lps_is_brcd_fabric() which works for FOS versions 6.3
 *         or above only.
 */

u16
bfa_fcs_fabric_get_switch_oui(struct bfa_fcs_fabric_s *fabric)
{
	wwn_t fab_nwwn;
	u8 *tmp;
	u16 oui;

	fab_nwwn = fabric->lps->pr_nwwn;

	tmp = (u8 *)&fab_nwwn;
	oui = (tmp[3] << 8) | tmp[4];

	return oui;
}
/*
 *		Unsolicited frame receive handling.
 */
void
bfa_fcs_fabric_uf_recv(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
		       u16 len)
{
	u32	pid = fchs->d_id;
	struct bfa_fcs_vport_s *vport;
	struct list_head	      *qe;
	struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
	struct fc_logi_s *flogi = (struct fc_logi_s *) els_cmd;

	bfa_trc(fabric->fcs, len);
	bfa_trc(fabric->fcs, pid);

	/*
	 * Look for our own FLOGI frames being looped back. This means an
	 * external loopback cable is in place. Our own FLOGI frames are
	 * sometimes looped back when switch port gets temporarily bypassed.
	 */
	if ((pid == bfa_os_ntoh3b(FC_FABRIC_PORT)) &&
	    (els_cmd->els_code == FC_ELS_FLOGI) &&
	    (flogi->port_name == bfa_fcs_lport_get_pwwn(&fabric->bport))) {
		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LOOPBACK);
		return;
	}

	/*
	 * FLOGI/EVFP exchanges should be consumed by base fabric.
	 */
	if (fchs->d_id == bfa_os_hton3b(FC_FABRIC_PORT)) {
		bfa_trc(fabric->fcs, pid);
		bfa_fcs_fabric_process_uf(fabric, fchs, len);
		return;
	}

	if (fabric->bport.pid == pid) {
		/*
		 * All authentication frames should be routed to auth
		 */
		bfa_trc(fabric->fcs, els_cmd->els_code);
		if (els_cmd->els_code == FC_ELS_AUTH) {
			bfa_trc(fabric->fcs, els_cmd->els_code);
			return;
		}

		bfa_trc(fabric->fcs, *(u8 *) ((u8 *) fchs));
		bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
		return;
	}

	/*
	 * look for a matching local port ID
	 */
	list_for_each(qe, &fabric->vport_q) {
		vport = (struct bfa_fcs_vport_s *) qe;
		if (vport->lport.pid == pid) {
			bfa_fcs_lport_uf_recv(&vport->lport, fchs, len);
			return;
		}
	}
	bfa_trc(fabric->fcs, els_cmd->els_code);
	bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
}

/*
 *		Unsolicited frames to be processed by fabric.
 */
static void
bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
			  u16 len)
{
	struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);

	bfa_trc(fabric->fcs, els_cmd->els_code);

	switch (els_cmd->els_code) {
	case FC_ELS_FLOGI:
		bfa_fcs_fabric_process_flogi(fabric, fchs, len);
		break;

	default:
		/*
		 * need to generate a LS_RJT
		 */
		break;
	}
}

/*
 *	Process	incoming FLOGI
 */
static void
bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
			struct fchs_s *fchs, u16 len)
{
	struct fc_logi_s *flogi = (struct fc_logi_s *) (fchs + 1);
	struct bfa_fcs_lport_s *bport = &fabric->bport;

	bfa_trc(fabric->fcs, fchs->s_id);

	fabric->stats.flogi_rcvd++;
	/*
	 * Check port type. It should be 0 = n-port.
	 */
	if (flogi->csp.port_type) {
		/*
		 * @todo: may need to send a LS_RJT
		 */
		bfa_trc(fabric->fcs, flogi->port_name);
		fabric->stats.flogi_rejected++;
		return;
	}

	fabric->bb_credit = be16_to_cpu(flogi->csp.bbcred);
	bport->port_topo.pn2n.rem_port_wwn = flogi->port_name;
	bport->port_topo.pn2n.reply_oxid = fchs->ox_id;

	/*
	 * Send a Flogi Acc
	 */
	bfa_fcs_fabric_send_flogi_acc(fabric);
	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
}

static void
bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric)
{
	struct bfa_lport_cfg_s *pcfg = &fabric->bport.port_cfg;
	struct bfa_fcs_lport_n2n_s *n2n_port = &fabric->bport.port_topo.pn2n;
	struct bfa_s	  *bfa = fabric->fcs->bfa;
	struct bfa_fcxp_s *fcxp;
	u16	reqlen;
	struct fchs_s	fchs;

	fcxp = bfa_fcs_fcxp_alloc(fabric->fcs);
	/*
	 * Do not expect this failure -- expect remote node to retry
	 */
	if (!fcxp)
		return;

	reqlen = fc_flogi_acc_build(&fchs, bfa_fcxp_get_reqbuf(fcxp),
				    bfa_os_hton3b(FC_FABRIC_PORT),
				    n2n_port->reply_oxid, pcfg->pwwn,
				    pcfg->nwwn,
				    bfa_fcport_get_maxfrsize(bfa),
				    bfa_fcport_get_rx_bbcredit(bfa));

	bfa_fcxp_send(fcxp, NULL, fabric->vf_id, fabric->lps->lp_tag,
		      BFA_FALSE, FC_CLASS_3,
		      reqlen, &fchs, bfa_fcs_fabric_flogiacc_comp, fabric,
		      FC_MAX_PDUSZ, 0);
}

/*
 *   Flogi Acc completion callback.
 */
static void
bfa_fcs_fabric_flogiacc_comp(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg,
			     bfa_status_t status, u32 rsp_len,
			     u32 resid_len, struct fchs_s *rspfchs)
{
	struct bfa_fcs_fabric_s *fabric = cbarg;

	bfa_trc(fabric->fcs, status);
}

/*
 *
 * @param[in] fabric - fabric
 * @param[in] wwn_t - new fabric name
 *
 * @return - none
 */
void
bfa_fcs_fabric_set_fabric_name(struct bfa_fcs_fabric_s *fabric,
			       wwn_t fabric_name)
{
	struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
	char	pwwn_ptr[BFA_STRING_32];
	char	fwwn_ptr[BFA_STRING_32];

	bfa_trc(fabric->fcs, fabric_name);

	if (fabric->fabric_name == 0) {
		/*
		 * With BRCD switches, we don't get Fabric Name in FLOGI.
		 * Don't generate a fabric name change event in this case.
		 */
		fabric->fabric_name = fabric_name;
	} else {
		fabric->fabric_name = fabric_name;
		wwn2str(pwwn_ptr, bfa_fcs_lport_get_pwwn(&fabric->bport));
		wwn2str(fwwn_ptr,
			bfa_fcs_lport_get_fabric_name(&fabric->bport));
		BFA_LOG(KERN_WARNING, bfad, bfa_log_level,
			"Base port WWN = %s Fabric WWN = %s\n",
			pwwn_ptr, fwwn_ptr);
	}
}

/*
 *	Returns FCS vf structure for a given vf_id.
 *
 *	param[in]	vf_id - VF_ID
 *
 *	return
 *	If lookup succeeds, retuns fcs vf object, otherwise returns NULL
 */
bfa_fcs_vf_t   *
bfa_fcs_vf_lookup(struct bfa_fcs_s *fcs, u16 vf_id)
{
	bfa_trc(fcs, vf_id);
	if (vf_id == FC_VF_ID_NULL)
		return &fcs->fabric;

	return NULL;
}

/*
 * BFA FCS PPORT ( physical port)
 */
static void
bfa_fcs_port_event_handler(void *cbarg, enum bfa_port_linkstate event)
{
	struct bfa_fcs_s      *fcs = cbarg;

	bfa_trc(fcs, event);

	switch (event) {
	case BFA_PORT_LINKUP:
		bfa_fcs_fabric_link_up(&fcs->fabric);
		break;

	case BFA_PORT_LINKDOWN:
		bfa_fcs_fabric_link_down(&fcs->fabric);
		break;

	default:
		bfa_assert(0);
	}
}

void
bfa_fcs_port_attach(struct bfa_fcs_s *fcs)
{
	bfa_fcport_event_register(fcs->bfa, bfa_fcs_port_event_handler, fcs);
}

/*
 * BFA FCS UF ( Unsolicited Frames)
 */

/*
 *		BFA callback for unsolicited frame receive handler.
 *
 * @param[in]		cbarg		callback arg for receive handler
 * @param[in]		uf		unsolicited frame descriptor
 *
 * @return None
 */
static void
bfa_fcs_uf_recv(void *cbarg, struct bfa_uf_s *uf)
{
	struct bfa_fcs_s	*fcs = (struct bfa_fcs_s *) cbarg;
	struct fchs_s	*fchs = bfa_uf_get_frmbuf(uf);
	u16	len = bfa_uf_get_frmlen(uf);
	struct fc_vft_s *vft;
	struct bfa_fcs_fabric_s *fabric;

	/*
	 * check for VFT header
	 */
	if (fchs->routing == FC_RTG_EXT_HDR &&
	    fchs->cat_info == FC_CAT_VFT_HDR) {
		bfa_stats(fcs, uf.tagged);
		vft = bfa_uf_get_frmbuf(uf);
		if (fcs->port_vfid == vft->vf_id)
			fabric = &fcs->fabric;
		else
			fabric = bfa_fcs_vf_lookup(fcs, (u16) vft->vf_id);

		/*
		 * drop frame if vfid is unknown
		 */
		if (!fabric) {
			bfa_assert(0);
			bfa_stats(fcs, uf.vfid_unknown);
			bfa_uf_free(uf);
			return;
		}

		/*
		 * skip vft header
		 */
		fchs = (struct fchs_s *) (vft + 1);
		len -= sizeof(struct fc_vft_s);

		bfa_trc(fcs, vft->vf_id);
	} else {
		bfa_stats(fcs, uf.untagged);
		fabric = &fcs->fabric;
	}

	bfa_trc(fcs, ((u32 *) fchs)[0]);
	bfa_trc(fcs, ((u32 *) fchs)[1]);
	bfa_trc(fcs, ((u32 *) fchs)[2]);
	bfa_trc(fcs, ((u32 *) fchs)[3]);
	bfa_trc(fcs, ((u32 *) fchs)[4]);
	bfa_trc(fcs, ((u32 *) fchs)[5]);
	bfa_trc(fcs, len);

	bfa_fcs_fabric_uf_recv(fabric, fchs, len);
	bfa_uf_free(uf);
}

void
bfa_fcs_uf_attach(struct bfa_fcs_s *fcs)
{
	bfa_uf_recv_register(fcs->bfa, bfa_fcs_uf_recv, fcs);
}