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Merge branch 'for-3.4' of git://linux-nfs.org/~bfields/linux
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / scsi / bfa / bfa_fcs.c
1 /*
2 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
3 * All rights reserved
4 * www.brocade.com
5 *
6 * Linux driver for Brocade Fibre Channel Host Bus Adapter.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License (GPL) Version 2 as
10 * published by the Free Software Foundation
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 */
17
18 /*
19 * bfa_fcs.c BFA FCS main
20 */
21
22 #include "bfad_drv.h"
23 #include "bfad_im.h"
24 #include "bfa_fcs.h"
25 #include "bfa_fcbuild.h"
26
27 BFA_TRC_FILE(FCS, FCS);
28
29 /*
30 * FCS sub-modules
31 */
32 struct bfa_fcs_mod_s {
33 void (*attach) (struct bfa_fcs_s *fcs);
34 void (*modinit) (struct bfa_fcs_s *fcs);
35 void (*modexit) (struct bfa_fcs_s *fcs);
36 };
37
38 #define BFA_FCS_MODULE(_mod) { _mod ## _modinit, _mod ## _modexit }
39
40 static struct bfa_fcs_mod_s fcs_modules[] = {
41 { bfa_fcs_port_attach, NULL, NULL },
42 { bfa_fcs_uf_attach, NULL, NULL },
43 { bfa_fcs_fabric_attach, bfa_fcs_fabric_modinit,
44 bfa_fcs_fabric_modexit },
45 };
46
47 /*
48 * fcs_api BFA FCS API
49 */
50
51 static void
52 bfa_fcs_exit_comp(void *fcs_cbarg)
53 {
54 struct bfa_fcs_s *fcs = fcs_cbarg;
55 struct bfad_s *bfad = fcs->bfad;
56
57 complete(&bfad->comp);
58 }
59
60
61
62 /*
63 * fcs_api BFA FCS API
64 */
65
66 /*
67 * fcs attach -- called once to initialize data structures at driver attach time
68 */
69 void
70 bfa_fcs_attach(struct bfa_fcs_s *fcs, struct bfa_s *bfa, struct bfad_s *bfad,
71 bfa_boolean_t min_cfg)
72 {
73 int i;
74 struct bfa_fcs_mod_s *mod;
75
76 fcs->bfa = bfa;
77 fcs->bfad = bfad;
78 fcs->min_cfg = min_cfg;
79
80 bfa->fcs = BFA_TRUE;
81 fcbuild_init();
82
83 for (i = 0; i < sizeof(fcs_modules) / sizeof(fcs_modules[0]); i++) {
84 mod = &fcs_modules[i];
85 if (mod->attach)
86 mod->attach(fcs);
87 }
88 }
89
90 /*
91 * fcs initialization, called once after bfa initialization is complete
92 */
93 void
94 bfa_fcs_init(struct bfa_fcs_s *fcs)
95 {
96 int i;
97 struct bfa_fcs_mod_s *mod;
98
99 for (i = 0; i < sizeof(fcs_modules) / sizeof(fcs_modules[0]); i++) {
100 mod = &fcs_modules[i];
101 if (mod->modinit)
102 mod->modinit(fcs);
103 }
104 }
105
106 /*
107 * FCS update cfg - reset the pwwn/nwwn of fabric base logical port
108 * with values learned during bfa_init firmware GETATTR REQ.
109 */
110 void
111 bfa_fcs_update_cfg(struct bfa_fcs_s *fcs)
112 {
113 struct bfa_fcs_fabric_s *fabric = &fcs->fabric;
114 struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
115 struct bfa_ioc_s *ioc = &fabric->fcs->bfa->ioc;
116
117 port_cfg->nwwn = ioc->attr->nwwn;
118 port_cfg->pwwn = ioc->attr->pwwn;
119 }
120
121 /*
122 * fcs pbc vport initialization
123 */
124 void
125 bfa_fcs_pbc_vport_init(struct bfa_fcs_s *fcs)
126 {
127 int i, npbc_vports;
128 struct bfi_pbc_vport_s pbc_vports[BFI_PBC_MAX_VPORTS];
129
130 /* Initialize pbc vports */
131 if (!fcs->min_cfg) {
132 npbc_vports =
133 bfa_iocfc_get_pbc_vports(fcs->bfa, pbc_vports);
134 for (i = 0; i < npbc_vports; i++)
135 bfa_fcb_pbc_vport_create(fcs->bfa->bfad, pbc_vports[i]);
136 }
137 }
138
139 /*
140 * brief
141 * FCS driver details initialization.
142 *
143 * param[in] fcs FCS instance
144 * param[in] driver_info Driver Details
145 *
146 * return None
147 */
148 void
149 bfa_fcs_driver_info_init(struct bfa_fcs_s *fcs,
150 struct bfa_fcs_driver_info_s *driver_info)
151 {
152
153 fcs->driver_info = *driver_info;
154
155 bfa_fcs_fabric_psymb_init(&fcs->fabric);
156 }
157
158 /*
159 * brief
160 * FCS instance cleanup and exit.
161 *
162 * param[in] fcs FCS instance
163 * return None
164 */
165 void
166 bfa_fcs_exit(struct bfa_fcs_s *fcs)
167 {
168 struct bfa_fcs_mod_s *mod;
169 int nmods, i;
170
171 bfa_wc_init(&fcs->wc, bfa_fcs_exit_comp, fcs);
172
173 nmods = sizeof(fcs_modules) / sizeof(fcs_modules[0]);
174
175 for (i = 0; i < nmods; i++) {
176
177 mod = &fcs_modules[i];
178 if (mod->modexit) {
179 bfa_wc_up(&fcs->wc);
180 mod->modexit(fcs);
181 }
182 }
183
184 bfa_wc_wait(&fcs->wc);
185 }
186
187
188 /*
189 * Fabric module implementation.
190 */
191
192 #define BFA_FCS_FABRIC_RETRY_DELAY (2000) /* Milliseconds */
193 #define BFA_FCS_FABRIC_CLEANUP_DELAY (10000) /* Milliseconds */
194
195 #define bfa_fcs_fabric_set_opertype(__fabric) do { \
196 if (bfa_fcport_get_topology((__fabric)->fcs->bfa) \
197 == BFA_PORT_TOPOLOGY_P2P) { \
198 if (fabric->fab_type == BFA_FCS_FABRIC_SWITCHED) \
199 (__fabric)->oper_type = BFA_PORT_TYPE_NPORT; \
200 else \
201 (__fabric)->oper_type = BFA_PORT_TYPE_P2P; \
202 } else \
203 (__fabric)->oper_type = BFA_PORT_TYPE_NLPORT; \
204 } while (0)
205
206 /*
207 * forward declarations
208 */
209 static void bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric);
210 static void bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric);
211 static void bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric);
212 static void bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric);
213 static void bfa_fcs_fabric_delay(void *cbarg);
214 static void bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric);
215 static void bfa_fcs_fabric_delete_comp(void *cbarg);
216 static void bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric,
217 struct fchs_s *fchs, u16 len);
218 static void bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
219 struct fchs_s *fchs, u16 len);
220 static void bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric);
221 static void bfa_fcs_fabric_flogiacc_comp(void *fcsarg,
222 struct bfa_fcxp_s *fcxp, void *cbarg,
223 bfa_status_t status,
224 u32 rsp_len,
225 u32 resid_len,
226 struct fchs_s *rspfchs);
227 static u8 bfa_fcs_fabric_oper_bbscn(struct bfa_fcs_fabric_s *fabric);
228 static bfa_boolean_t bfa_fcs_fabric_is_bbscn_enabled(
229 struct bfa_fcs_fabric_s *fabric);
230
231 static void bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
232 enum bfa_fcs_fabric_event event);
233 static void bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
234 enum bfa_fcs_fabric_event event);
235 static void bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
236 enum bfa_fcs_fabric_event event);
237 static void bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
238 enum bfa_fcs_fabric_event event);
239 static void bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
240 enum bfa_fcs_fabric_event event);
241 static void bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
242 enum bfa_fcs_fabric_event event);
243 static void bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
244 enum bfa_fcs_fabric_event event);
245 static void bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
246 enum bfa_fcs_fabric_event event);
247 static void bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
248 enum bfa_fcs_fabric_event event);
249 static void bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
250 enum bfa_fcs_fabric_event event);
251 static void bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
252 enum bfa_fcs_fabric_event event);
253 /*
254 * Beginning state before fabric creation.
255 */
256 static void
257 bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
258 enum bfa_fcs_fabric_event event)
259 {
260 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
261 bfa_trc(fabric->fcs, event);
262
263 switch (event) {
264 case BFA_FCS_FABRIC_SM_CREATE:
265 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
266 bfa_fcs_fabric_init(fabric);
267 bfa_fcs_lport_init(&fabric->bport, &fabric->bport.port_cfg);
268 break;
269
270 case BFA_FCS_FABRIC_SM_LINK_UP:
271 case BFA_FCS_FABRIC_SM_LINK_DOWN:
272 break;
273
274 default:
275 bfa_sm_fault(fabric->fcs, event);
276 }
277 }
278
279 /*
280 * Beginning state before fabric creation.
281 */
282 static void
283 bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
284 enum bfa_fcs_fabric_event event)
285 {
286 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
287 bfa_trc(fabric->fcs, event);
288
289 switch (event) {
290 case BFA_FCS_FABRIC_SM_START:
291 if (bfa_fcport_is_linkup(fabric->fcs->bfa)) {
292 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
293 bfa_fcs_fabric_login(fabric);
294 } else
295 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
296 break;
297
298 case BFA_FCS_FABRIC_SM_LINK_UP:
299 case BFA_FCS_FABRIC_SM_LINK_DOWN:
300 break;
301
302 case BFA_FCS_FABRIC_SM_DELETE:
303 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
304 bfa_fcs_fabric_delete(fabric);
305 break;
306
307 default:
308 bfa_sm_fault(fabric->fcs, event);
309 }
310 }
311
312 /*
313 * Link is down, awaiting LINK UP event from port. This is also the
314 * first state at fabric creation.
315 */
316 static void
317 bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
318 enum bfa_fcs_fabric_event event)
319 {
320 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
321 bfa_trc(fabric->fcs, event);
322
323 switch (event) {
324 case BFA_FCS_FABRIC_SM_LINK_UP:
325 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
326 bfa_fcs_fabric_login(fabric);
327 break;
328
329 case BFA_FCS_FABRIC_SM_RETRY_OP:
330 break;
331
332 case BFA_FCS_FABRIC_SM_DELETE:
333 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
334 bfa_fcs_fabric_delete(fabric);
335 break;
336
337 default:
338 bfa_sm_fault(fabric->fcs, event);
339 }
340 }
341
342 /*
343 * FLOGI is in progress, awaiting FLOGI reply.
344 */
345 static void
346 bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
347 enum bfa_fcs_fabric_event event)
348 {
349 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
350 bfa_trc(fabric->fcs, event);
351
352 switch (event) {
353 case BFA_FCS_FABRIC_SM_CONT_OP:
354
355 bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
356 fabric->bb_credit,
357 bfa_fcs_fabric_oper_bbscn(fabric));
358 fabric->fab_type = BFA_FCS_FABRIC_SWITCHED;
359
360 if (fabric->auth_reqd && fabric->is_auth) {
361 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth);
362 bfa_trc(fabric->fcs, event);
363 } else {
364 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
365 bfa_fcs_fabric_notify_online(fabric);
366 }
367 break;
368
369 case BFA_FCS_FABRIC_SM_RETRY_OP:
370 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi_retry);
371 bfa_timer_start(fabric->fcs->bfa, &fabric->delay_timer,
372 bfa_fcs_fabric_delay, fabric,
373 BFA_FCS_FABRIC_RETRY_DELAY);
374 break;
375
376 case BFA_FCS_FABRIC_SM_LOOPBACK:
377 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_loopback);
378 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
379 bfa_fcs_fabric_set_opertype(fabric);
380 break;
381
382 case BFA_FCS_FABRIC_SM_NO_FABRIC:
383 fabric->fab_type = BFA_FCS_FABRIC_N2N;
384 bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
385 fabric->bb_credit,
386 bfa_fcs_fabric_oper_bbscn(fabric));
387 bfa_fcs_fabric_notify_online(fabric);
388 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_nofabric);
389 break;
390
391 case BFA_FCS_FABRIC_SM_LINK_DOWN:
392 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
393 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
394 break;
395
396 case BFA_FCS_FABRIC_SM_DELETE:
397 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
398 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
399 bfa_fcs_fabric_delete(fabric);
400 break;
401
402 default:
403 bfa_sm_fault(fabric->fcs, event);
404 }
405 }
406
407
408 static void
409 bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
410 enum bfa_fcs_fabric_event event)
411 {
412 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
413 bfa_trc(fabric->fcs, event);
414
415 switch (event) {
416 case BFA_FCS_FABRIC_SM_DELAYED:
417 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
418 bfa_fcs_fabric_login(fabric);
419 break;
420
421 case BFA_FCS_FABRIC_SM_LINK_DOWN:
422 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
423 bfa_timer_stop(&fabric->delay_timer);
424 break;
425
426 case BFA_FCS_FABRIC_SM_DELETE:
427 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
428 bfa_timer_stop(&fabric->delay_timer);
429 bfa_fcs_fabric_delete(fabric);
430 break;
431
432 default:
433 bfa_sm_fault(fabric->fcs, event);
434 }
435 }
436
437 /*
438 * Authentication is in progress, awaiting authentication results.
439 */
440 static void
441 bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
442 enum bfa_fcs_fabric_event event)
443 {
444 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
445 bfa_trc(fabric->fcs, event);
446
447 switch (event) {
448 case BFA_FCS_FABRIC_SM_AUTH_FAILED:
449 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
450 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
451 break;
452
453 case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
454 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
455 bfa_fcs_fabric_notify_online(fabric);
456 break;
457
458 case BFA_FCS_FABRIC_SM_PERF_EVFP:
459 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp);
460 break;
461
462 case BFA_FCS_FABRIC_SM_LINK_DOWN:
463 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
464 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
465 break;
466
467 case BFA_FCS_FABRIC_SM_DELETE:
468 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
469 bfa_fcs_fabric_delete(fabric);
470 break;
471
472 default:
473 bfa_sm_fault(fabric->fcs, event);
474 }
475 }
476
477 /*
478 * Authentication failed
479 */
480 void
481 bfa_fcs_fabric_sm_auth_failed(struct bfa_fcs_fabric_s *fabric,
482 enum bfa_fcs_fabric_event event)
483 {
484 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
485 bfa_trc(fabric->fcs, event);
486
487 switch (event) {
488 case BFA_FCS_FABRIC_SM_LINK_DOWN:
489 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
490 bfa_fcs_fabric_notify_offline(fabric);
491 break;
492
493 case BFA_FCS_FABRIC_SM_DELETE:
494 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
495 bfa_fcs_fabric_delete(fabric);
496 break;
497
498 default:
499 bfa_sm_fault(fabric->fcs, event);
500 }
501 }
502
503 /*
504 * Port is in loopback mode.
505 */
506 void
507 bfa_fcs_fabric_sm_loopback(struct bfa_fcs_fabric_s *fabric,
508 enum bfa_fcs_fabric_event event)
509 {
510 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
511 bfa_trc(fabric->fcs, event);
512
513 switch (event) {
514 case BFA_FCS_FABRIC_SM_LINK_DOWN:
515 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
516 bfa_fcs_fabric_notify_offline(fabric);
517 break;
518
519 case BFA_FCS_FABRIC_SM_DELETE:
520 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
521 bfa_fcs_fabric_delete(fabric);
522 break;
523
524 default:
525 bfa_sm_fault(fabric->fcs, event);
526 }
527 }
528
529 /*
530 * There is no attached fabric - private loop or NPort-to-NPort topology.
531 */
532 static void
533 bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
534 enum bfa_fcs_fabric_event event)
535 {
536 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
537 bfa_trc(fabric->fcs, event);
538
539 switch (event) {
540 case BFA_FCS_FABRIC_SM_LINK_DOWN:
541 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
542 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
543 bfa_fcs_fabric_notify_offline(fabric);
544 break;
545
546 case BFA_FCS_FABRIC_SM_DELETE:
547 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
548 bfa_fcs_fabric_delete(fabric);
549 break;
550
551 case BFA_FCS_FABRIC_SM_NO_FABRIC:
552 bfa_trc(fabric->fcs, fabric->bb_credit);
553 bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
554 fabric->bb_credit,
555 bfa_fcs_fabric_oper_bbscn(fabric));
556 break;
557
558 case BFA_FCS_FABRIC_SM_RETRY_OP:
559 break;
560
561 default:
562 bfa_sm_fault(fabric->fcs, event);
563 }
564 }
565
566 /*
567 * Fabric is online - normal operating state.
568 */
569 void
570 bfa_fcs_fabric_sm_online(struct bfa_fcs_fabric_s *fabric,
571 enum bfa_fcs_fabric_event event)
572 {
573 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
574 bfa_trc(fabric->fcs, event);
575
576 switch (event) {
577 case BFA_FCS_FABRIC_SM_LINK_DOWN:
578 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
579 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
580 bfa_fcs_fabric_notify_offline(fabric);
581 break;
582
583 case BFA_FCS_FABRIC_SM_DELETE:
584 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
585 bfa_fcs_fabric_delete(fabric);
586 break;
587
588 case BFA_FCS_FABRIC_SM_AUTH_FAILED:
589 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
590 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
591 break;
592
593 case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
594 break;
595
596 default:
597 bfa_sm_fault(fabric->fcs, event);
598 }
599 }
600
601 /*
602 * Exchanging virtual fabric parameters.
603 */
604 static void
605 bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
606 enum bfa_fcs_fabric_event event)
607 {
608 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
609 bfa_trc(fabric->fcs, event);
610
611 switch (event) {
612 case BFA_FCS_FABRIC_SM_CONT_OP:
613 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp_done);
614 break;
615
616 case BFA_FCS_FABRIC_SM_ISOLATE:
617 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_isolated);
618 break;
619
620 default:
621 bfa_sm_fault(fabric->fcs, event);
622 }
623 }
624
625 /*
626 * EVFP exchange complete and VFT tagging is enabled.
627 */
628 static void
629 bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
630 enum bfa_fcs_fabric_event event)
631 {
632 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
633 bfa_trc(fabric->fcs, event);
634 }
635
636 /*
637 * Port is isolated after EVFP exchange due to VF_ID mismatch (N and F).
638 */
639 static void
640 bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
641 enum bfa_fcs_fabric_event event)
642 {
643 struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
644 char pwwn_ptr[BFA_STRING_32];
645
646 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
647 bfa_trc(fabric->fcs, event);
648 wwn2str(pwwn_ptr, fabric->bport.port_cfg.pwwn);
649
650 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
651 "Port is isolated due to VF_ID mismatch. "
652 "PWWN: %s Port VF_ID: %04x switch port VF_ID: %04x.",
653 pwwn_ptr, fabric->fcs->port_vfid,
654 fabric->event_arg.swp_vfid);
655 }
656
657 /*
658 * Fabric is being deleted, awaiting vport delete completions.
659 */
660 static void
661 bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
662 enum bfa_fcs_fabric_event event)
663 {
664 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
665 bfa_trc(fabric->fcs, event);
666
667 switch (event) {
668 case BFA_FCS_FABRIC_SM_DELCOMP:
669 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
670 bfa_wc_down(&fabric->fcs->wc);
671 break;
672
673 case BFA_FCS_FABRIC_SM_LINK_UP:
674 break;
675
676 case BFA_FCS_FABRIC_SM_LINK_DOWN:
677 bfa_fcs_fabric_notify_offline(fabric);
678 break;
679
680 default:
681 bfa_sm_fault(fabric->fcs, event);
682 }
683 }
684
685
686
687 /*
688 * fcs_fabric_private fabric private functions
689 */
690
691 static void
692 bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric)
693 {
694 struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
695
696 port_cfg->roles = BFA_LPORT_ROLE_FCP_IM;
697 port_cfg->nwwn = fabric->fcs->bfa->ioc.attr->nwwn;
698 port_cfg->pwwn = fabric->fcs->bfa->ioc.attr->pwwn;
699 }
700
701 /*
702 * Port Symbolic Name Creation for base port.
703 */
704 void
705 bfa_fcs_fabric_psymb_init(struct bfa_fcs_fabric_s *fabric)
706 {
707 struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
708 char model[BFA_ADAPTER_MODEL_NAME_LEN] = {0};
709 struct bfa_fcs_driver_info_s *driver_info = &fabric->fcs->driver_info;
710
711 bfa_ioc_get_adapter_model(&fabric->fcs->bfa->ioc, model);
712
713 /* Model name/number */
714 strncpy((char *)&port_cfg->sym_name, model,
715 BFA_FCS_PORT_SYMBNAME_MODEL_SZ);
716 strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
717 sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
718
719 /* Driver Version */
720 strncat((char *)&port_cfg->sym_name, (char *)driver_info->version,
721 BFA_FCS_PORT_SYMBNAME_VERSION_SZ);
722 strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
723 sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
724
725 /* Host machine name */
726 strncat((char *)&port_cfg->sym_name,
727 (char *)driver_info->host_machine_name,
728 BFA_FCS_PORT_SYMBNAME_MACHINENAME_SZ);
729 strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
730 sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
731
732 /*
733 * Host OS Info :
734 * If OS Patch Info is not there, do not truncate any bytes from the
735 * OS name string and instead copy the entire OS info string (64 bytes).
736 */
737 if (driver_info->host_os_patch[0] == '\0') {
738 strncat((char *)&port_cfg->sym_name,
739 (char *)driver_info->host_os_name,
740 BFA_FCS_OS_STR_LEN);
741 strncat((char *)&port_cfg->sym_name,
742 BFA_FCS_PORT_SYMBNAME_SEPARATOR,
743 sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
744 } else {
745 strncat((char *)&port_cfg->sym_name,
746 (char *)driver_info->host_os_name,
747 BFA_FCS_PORT_SYMBNAME_OSINFO_SZ);
748 strncat((char *)&port_cfg->sym_name,
749 BFA_FCS_PORT_SYMBNAME_SEPARATOR,
750 sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
751
752 /* Append host OS Patch Info */
753 strncat((char *)&port_cfg->sym_name,
754 (char *)driver_info->host_os_patch,
755 BFA_FCS_PORT_SYMBNAME_OSPATCH_SZ);
756 }
757
758 /* null terminate */
759 port_cfg->sym_name.symname[BFA_SYMNAME_MAXLEN - 1] = 0;
760 }
761
762 /*
763 * bfa lps login completion callback
764 */
765 void
766 bfa_cb_lps_flogi_comp(void *bfad, void *uarg, bfa_status_t status)
767 {
768 struct bfa_fcs_fabric_s *fabric = uarg;
769
770 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
771 bfa_trc(fabric->fcs, status);
772
773 switch (status) {
774 case BFA_STATUS_OK:
775 fabric->stats.flogi_accepts++;
776 break;
777
778 case BFA_STATUS_INVALID_MAC:
779 /* Only for CNA */
780 fabric->stats.flogi_acc_err++;
781 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
782
783 return;
784
785 case BFA_STATUS_EPROTOCOL:
786 switch (fabric->lps->ext_status) {
787 case BFA_EPROTO_BAD_ACCEPT:
788 fabric->stats.flogi_acc_err++;
789 break;
790
791 case BFA_EPROTO_UNKNOWN_RSP:
792 fabric->stats.flogi_unknown_rsp++;
793 break;
794
795 default:
796 break;
797 }
798 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
799
800 return;
801
802 case BFA_STATUS_FABRIC_RJT:
803 fabric->stats.flogi_rejects++;
804 if (fabric->lps->lsrjt_rsn == FC_LS_RJT_RSN_LOGICAL_ERROR &&
805 fabric->lps->lsrjt_expl == FC_LS_RJT_EXP_NO_ADDL_INFO)
806 fabric->fcs->bbscn_flogi_rjt = BFA_TRUE;
807
808 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
809 return;
810
811 default:
812 fabric->stats.flogi_rsp_err++;
813 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
814 return;
815 }
816
817 fabric->bb_credit = fabric->lps->pr_bbcred;
818 bfa_trc(fabric->fcs, fabric->bb_credit);
819
820 if (!(fabric->lps->brcd_switch))
821 fabric->fabric_name = fabric->lps->pr_nwwn;
822
823 /*
824 * Check port type. It should be 1 = F-port.
825 */
826 if (fabric->lps->fport) {
827 fabric->bport.pid = fabric->lps->lp_pid;
828 fabric->is_npiv = fabric->lps->npiv_en;
829 fabric->is_auth = fabric->lps->auth_req;
830 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_CONT_OP);
831 } else {
832 /*
833 * Nport-2-Nport direct attached
834 */
835 fabric->bport.port_topo.pn2n.rem_port_wwn =
836 fabric->lps->pr_pwwn;
837 fabric->fab_type = BFA_FCS_FABRIC_N2N;
838 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
839 }
840
841 bfa_trc(fabric->fcs, fabric->bport.pid);
842 bfa_trc(fabric->fcs, fabric->is_npiv);
843 bfa_trc(fabric->fcs, fabric->is_auth);
844 }
845 /*
846 * Allocate and send FLOGI.
847 */
848 static void
849 bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric)
850 {
851 struct bfa_s *bfa = fabric->fcs->bfa;
852 struct bfa_lport_cfg_s *pcfg = &fabric->bport.port_cfg;
853 u8 alpa = 0, bb_scn = 0;
854
855 if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP)
856 alpa = bfa_fcport_get_myalpa(bfa);
857
858 if (bfa_fcs_fabric_is_bbscn_enabled(fabric) &&
859 (!fabric->fcs->bbscn_flogi_rjt))
860 bb_scn = BFA_FCS_PORT_DEF_BB_SCN;
861
862 bfa_lps_flogi(fabric->lps, fabric, alpa, bfa_fcport_get_maxfrsize(bfa),
863 pcfg->pwwn, pcfg->nwwn, fabric->auth_reqd, bb_scn);
864
865 fabric->stats.flogi_sent++;
866 }
867
868 static void
869 bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric)
870 {
871 struct bfa_fcs_vport_s *vport;
872 struct list_head *qe, *qen;
873
874 bfa_trc(fabric->fcs, fabric->fabric_name);
875
876 bfa_fcs_fabric_set_opertype(fabric);
877 fabric->stats.fabric_onlines++;
878
879 /*
880 * notify online event to base and then virtual ports
881 */
882 bfa_fcs_lport_online(&fabric->bport);
883
884 list_for_each_safe(qe, qen, &fabric->vport_q) {
885 vport = (struct bfa_fcs_vport_s *) qe;
886 bfa_fcs_vport_online(vport);
887 }
888 }
889
890 static void
891 bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric)
892 {
893 struct bfa_fcs_vport_s *vport;
894 struct list_head *qe, *qen;
895
896 bfa_trc(fabric->fcs, fabric->fabric_name);
897 fabric->stats.fabric_offlines++;
898
899 /*
900 * notify offline event first to vports and then base port.
901 */
902 list_for_each_safe(qe, qen, &fabric->vport_q) {
903 vport = (struct bfa_fcs_vport_s *) qe;
904 bfa_fcs_vport_offline(vport);
905 }
906
907 bfa_fcs_lport_offline(&fabric->bport);
908
909 fabric->fabric_name = 0;
910 fabric->fabric_ip_addr[0] = 0;
911 }
912
913 static void
914 bfa_fcs_fabric_delay(void *cbarg)
915 {
916 struct bfa_fcs_fabric_s *fabric = cbarg;
917
918 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELAYED);
919 }
920
921 /*
922 * Computes operating BB_SCN value
923 */
924 static u8
925 bfa_fcs_fabric_oper_bbscn(struct bfa_fcs_fabric_s *fabric)
926 {
927 u8 pr_bbscn = fabric->lps->pr_bbscn;
928 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(fabric->fcs->bfa);
929
930 if (!(fcport->cfg.bb_scn_state && pr_bbscn))
931 return 0;
932
933 /* return max of local/remote bb_scn values */
934 return ((pr_bbscn > BFA_FCS_PORT_DEF_BB_SCN) ?
935 pr_bbscn : BFA_FCS_PORT_DEF_BB_SCN);
936 }
937
938 /*
939 * Check if BB_SCN can be enabled.
940 */
941 static bfa_boolean_t
942 bfa_fcs_fabric_is_bbscn_enabled(struct bfa_fcs_fabric_s *fabric)
943 {
944 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(fabric->fcs->bfa);
945
946 if (bfa_ioc_get_fcmode(&fabric->fcs->bfa->ioc) &&
947 fcport->cfg.bb_scn_state &&
948 !bfa_fcport_is_qos_enabled(fabric->fcs->bfa) &&
949 !bfa_fcport_is_trunk_enabled(fabric->fcs->bfa))
950 return BFA_TRUE;
951 else
952 return BFA_FALSE;
953 }
954
955 /*
956 * Delete all vports and wait for vport delete completions.
957 */
958 static void
959 bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric)
960 {
961 struct bfa_fcs_vport_s *vport;
962 struct list_head *qe, *qen;
963
964 list_for_each_safe(qe, qen, &fabric->vport_q) {
965 vport = (struct bfa_fcs_vport_s *) qe;
966 bfa_fcs_vport_fcs_delete(vport);
967 }
968
969 bfa_fcs_lport_delete(&fabric->bport);
970 bfa_wc_wait(&fabric->wc);
971 }
972
973 static void
974 bfa_fcs_fabric_delete_comp(void *cbarg)
975 {
976 struct bfa_fcs_fabric_s *fabric = cbarg;
977
978 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELCOMP);
979 }
980
981 /*
982 * fcs_fabric_public fabric public functions
983 */
984
985 /*
986 * Attach time initialization.
987 */
988 void
989 bfa_fcs_fabric_attach(struct bfa_fcs_s *fcs)
990 {
991 struct bfa_fcs_fabric_s *fabric;
992
993 fabric = &fcs->fabric;
994 memset(fabric, 0, sizeof(struct bfa_fcs_fabric_s));
995
996 /*
997 * Initialize base fabric.
998 */
999 fabric->fcs = fcs;
1000 INIT_LIST_HEAD(&fabric->vport_q);
1001 INIT_LIST_HEAD(&fabric->vf_q);
1002 fabric->lps = bfa_lps_alloc(fcs->bfa);
1003 WARN_ON(!fabric->lps);
1004
1005 /*
1006 * Initialize fabric delete completion handler. Fabric deletion is
1007 * complete when the last vport delete is complete.
1008 */
1009 bfa_wc_init(&fabric->wc, bfa_fcs_fabric_delete_comp, fabric);
1010 bfa_wc_up(&fabric->wc); /* For the base port */
1011
1012 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
1013 bfa_fcs_lport_attach(&fabric->bport, fabric->fcs, FC_VF_ID_NULL, NULL);
1014 }
1015
1016 void
1017 bfa_fcs_fabric_modinit(struct bfa_fcs_s *fcs)
1018 {
1019 bfa_sm_send_event(&fcs->fabric, BFA_FCS_FABRIC_SM_CREATE);
1020 bfa_trc(fcs, 0);
1021 }
1022
1023 /*
1024 * Module cleanup
1025 */
1026 void
1027 bfa_fcs_fabric_modexit(struct bfa_fcs_s *fcs)
1028 {
1029 struct bfa_fcs_fabric_s *fabric;
1030
1031 bfa_trc(fcs, 0);
1032
1033 /*
1034 * Cleanup base fabric.
1035 */
1036 fabric = &fcs->fabric;
1037 bfa_lps_delete(fabric->lps);
1038 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELETE);
1039 }
1040
1041 /*
1042 * Fabric module start -- kick starts FCS actions
1043 */
1044 void
1045 bfa_fcs_fabric_modstart(struct bfa_fcs_s *fcs)
1046 {
1047 struct bfa_fcs_fabric_s *fabric;
1048
1049 bfa_trc(fcs, 0);
1050 fabric = &fcs->fabric;
1051 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_START);
1052 }
1053
1054
1055 /*
1056 * Link up notification from BFA physical port module.
1057 */
1058 void
1059 bfa_fcs_fabric_link_up(struct bfa_fcs_fabric_s *fabric)
1060 {
1061 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
1062 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_UP);
1063 }
1064
1065 /*
1066 * Link down notification from BFA physical port module.
1067 */
1068 void
1069 bfa_fcs_fabric_link_down(struct bfa_fcs_fabric_s *fabric)
1070 {
1071 bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
1072 fabric->fcs->bbscn_flogi_rjt = BFA_FALSE;
1073 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_DOWN);
1074 }
1075
1076 /*
1077 * A child vport is being created in the fabric.
1078 *
1079 * Call from vport module at vport creation. A list of base port and vports
1080 * belonging to a fabric is maintained to propagate link events.
1081 *
1082 * param[in] fabric - Fabric instance. This can be a base fabric or vf.
1083 * param[in] vport - Vport being created.
1084 *
1085 * @return None (always succeeds)
1086 */
1087 void
1088 bfa_fcs_fabric_addvport(struct bfa_fcs_fabric_s *fabric,
1089 struct bfa_fcs_vport_s *vport)
1090 {
1091 /*
1092 * - add vport to fabric's vport_q
1093 */
1094 bfa_trc(fabric->fcs, fabric->vf_id);
1095
1096 list_add_tail(&vport->qe, &fabric->vport_q);
1097 fabric->num_vports++;
1098 bfa_wc_up(&fabric->wc);
1099 }
1100
1101 /*
1102 * A child vport is being deleted from fabric.
1103 *
1104 * Vport is being deleted.
1105 */
1106 void
1107 bfa_fcs_fabric_delvport(struct bfa_fcs_fabric_s *fabric,
1108 struct bfa_fcs_vport_s *vport)
1109 {
1110 list_del(&vport->qe);
1111 fabric->num_vports--;
1112 bfa_wc_down(&fabric->wc);
1113 }
1114
1115
1116 /*
1117 * Lookup for a vport within a fabric given its pwwn
1118 */
1119 struct bfa_fcs_vport_s *
1120 bfa_fcs_fabric_vport_lookup(struct bfa_fcs_fabric_s *fabric, wwn_t pwwn)
1121 {
1122 struct bfa_fcs_vport_s *vport;
1123 struct list_head *qe;
1124
1125 list_for_each(qe, &fabric->vport_q) {
1126 vport = (struct bfa_fcs_vport_s *) qe;
1127 if (bfa_fcs_lport_get_pwwn(&vport->lport) == pwwn)
1128 return vport;
1129 }
1130
1131 return NULL;
1132 }
1133
1134
1135 /*
1136 * Get OUI of the attached switch.
1137 *
1138 * Note : Use of this function should be avoided as much as possible.
1139 * This function should be used only if there is any requirement
1140 * to check for FOS version below 6.3.
1141 * To check if the attached fabric is a brocade fabric, use
1142 * bfa_lps_is_brcd_fabric() which works for FOS versions 6.3
1143 * or above only.
1144 */
1145
1146 u16
1147 bfa_fcs_fabric_get_switch_oui(struct bfa_fcs_fabric_s *fabric)
1148 {
1149 wwn_t fab_nwwn;
1150 u8 *tmp;
1151 u16 oui;
1152
1153 fab_nwwn = fabric->lps->pr_nwwn;
1154
1155 tmp = (u8 *)&fab_nwwn;
1156 oui = (tmp[3] << 8) | tmp[4];
1157
1158 return oui;
1159 }
1160 /*
1161 * Unsolicited frame receive handling.
1162 */
1163 void
1164 bfa_fcs_fabric_uf_recv(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
1165 u16 len)
1166 {
1167 u32 pid = fchs->d_id;
1168 struct bfa_fcs_vport_s *vport;
1169 struct list_head *qe;
1170 struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
1171 struct fc_logi_s *flogi = (struct fc_logi_s *) els_cmd;
1172
1173 bfa_trc(fabric->fcs, len);
1174 bfa_trc(fabric->fcs, pid);
1175
1176 /*
1177 * Look for our own FLOGI frames being looped back. This means an
1178 * external loopback cable is in place. Our own FLOGI frames are
1179 * sometimes looped back when switch port gets temporarily bypassed.
1180 */
1181 if ((pid == bfa_ntoh3b(FC_FABRIC_PORT)) &&
1182 (els_cmd->els_code == FC_ELS_FLOGI) &&
1183 (flogi->port_name == bfa_fcs_lport_get_pwwn(&fabric->bport))) {
1184 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LOOPBACK);
1185 return;
1186 }
1187
1188 /*
1189 * FLOGI/EVFP exchanges should be consumed by base fabric.
1190 */
1191 if (fchs->d_id == bfa_hton3b(FC_FABRIC_PORT)) {
1192 bfa_trc(fabric->fcs, pid);
1193 bfa_fcs_fabric_process_uf(fabric, fchs, len);
1194 return;
1195 }
1196
1197 if (fabric->bport.pid == pid) {
1198 /*
1199 * All authentication frames should be routed to auth
1200 */
1201 bfa_trc(fabric->fcs, els_cmd->els_code);
1202 if (els_cmd->els_code == FC_ELS_AUTH) {
1203 bfa_trc(fabric->fcs, els_cmd->els_code);
1204 return;
1205 }
1206
1207 bfa_trc(fabric->fcs, *(u8 *) ((u8 *) fchs));
1208 bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
1209 return;
1210 }
1211
1212 /*
1213 * look for a matching local port ID
1214 */
1215 list_for_each(qe, &fabric->vport_q) {
1216 vport = (struct bfa_fcs_vport_s *) qe;
1217 if (vport->lport.pid == pid) {
1218 bfa_fcs_lport_uf_recv(&vport->lport, fchs, len);
1219 return;
1220 }
1221 }
1222 bfa_trc(fabric->fcs, els_cmd->els_code);
1223 bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
1224 }
1225
1226 /*
1227 * Unsolicited frames to be processed by fabric.
1228 */
1229 static void
1230 bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
1231 u16 len)
1232 {
1233 struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
1234
1235 bfa_trc(fabric->fcs, els_cmd->els_code);
1236
1237 switch (els_cmd->els_code) {
1238 case FC_ELS_FLOGI:
1239 bfa_fcs_fabric_process_flogi(fabric, fchs, len);
1240 break;
1241
1242 default:
1243 /*
1244 * need to generate a LS_RJT
1245 */
1246 break;
1247 }
1248 }
1249
1250 /*
1251 * Process incoming FLOGI
1252 */
1253 static void
1254 bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
1255 struct fchs_s *fchs, u16 len)
1256 {
1257 struct fc_logi_s *flogi = (struct fc_logi_s *) (fchs + 1);
1258 struct bfa_fcs_lport_s *bport = &fabric->bport;
1259
1260 bfa_trc(fabric->fcs, fchs->s_id);
1261
1262 fabric->stats.flogi_rcvd++;
1263 /*
1264 * Check port type. It should be 0 = n-port.
1265 */
1266 if (flogi->csp.port_type) {
1267 /*
1268 * @todo: may need to send a LS_RJT
1269 */
1270 bfa_trc(fabric->fcs, flogi->port_name);
1271 fabric->stats.flogi_rejected++;
1272 return;
1273 }
1274
1275 fabric->bb_credit = be16_to_cpu(flogi->csp.bbcred);
1276 fabric->lps->pr_bbscn = (be16_to_cpu(flogi->csp.rxsz) >> 12);
1277 bport->port_topo.pn2n.rem_port_wwn = flogi->port_name;
1278 bport->port_topo.pn2n.reply_oxid = fchs->ox_id;
1279
1280 /*
1281 * Send a Flogi Acc
1282 */
1283 bfa_fcs_fabric_send_flogi_acc(fabric);
1284 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
1285 }
1286
1287 static void
1288 bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric)
1289 {
1290 struct bfa_lport_cfg_s *pcfg = &fabric->bport.port_cfg;
1291 struct bfa_fcs_lport_n2n_s *n2n_port = &fabric->bport.port_topo.pn2n;
1292 struct bfa_s *bfa = fabric->fcs->bfa;
1293 struct bfa_fcxp_s *fcxp;
1294 u16 reqlen;
1295 struct fchs_s fchs;
1296
1297 fcxp = bfa_fcs_fcxp_alloc(fabric->fcs);
1298 /*
1299 * Do not expect this failure -- expect remote node to retry
1300 */
1301 if (!fcxp)
1302 return;
1303
1304 reqlen = fc_flogi_acc_build(&fchs, bfa_fcxp_get_reqbuf(fcxp),
1305 bfa_hton3b(FC_FABRIC_PORT),
1306 n2n_port->reply_oxid, pcfg->pwwn,
1307 pcfg->nwwn,
1308 bfa_fcport_get_maxfrsize(bfa),
1309 bfa_fcport_get_rx_bbcredit(bfa),
1310 bfa_fcs_fabric_oper_bbscn(fabric));
1311
1312 bfa_fcxp_send(fcxp, NULL, fabric->vf_id, fabric->lps->bfa_tag,
1313 BFA_FALSE, FC_CLASS_3,
1314 reqlen, &fchs, bfa_fcs_fabric_flogiacc_comp, fabric,
1315 FC_MAX_PDUSZ, 0);
1316 }
1317
1318 /*
1319 * Flogi Acc completion callback.
1320 */
1321 static void
1322 bfa_fcs_fabric_flogiacc_comp(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg,
1323 bfa_status_t status, u32 rsp_len,
1324 u32 resid_len, struct fchs_s *rspfchs)
1325 {
1326 struct bfa_fcs_fabric_s *fabric = cbarg;
1327
1328 bfa_trc(fabric->fcs, status);
1329 }
1330
1331
1332 /*
1333 * Send AEN notification
1334 */
1335 static void
1336 bfa_fcs_fabric_aen_post(struct bfa_fcs_lport_s *port,
1337 enum bfa_port_aen_event event)
1338 {
1339 struct bfad_s *bfad = (struct bfad_s *)port->fabric->fcs->bfad;
1340 struct bfa_aen_entry_s *aen_entry;
1341
1342 bfad_get_aen_entry(bfad, aen_entry);
1343 if (!aen_entry)
1344 return;
1345
1346 aen_entry->aen_data.port.pwwn = bfa_fcs_lport_get_pwwn(port);
1347 aen_entry->aen_data.port.fwwn = bfa_fcs_lport_get_fabric_name(port);
1348
1349 /* Send the AEN notification */
1350 bfad_im_post_vendor_event(aen_entry, bfad, ++port->fcs->fcs_aen_seq,
1351 BFA_AEN_CAT_PORT, event);
1352 }
1353
1354 /*
1355 *
1356 * @param[in] fabric - fabric
1357 * @param[in] wwn_t - new fabric name
1358 *
1359 * @return - none
1360 */
1361 void
1362 bfa_fcs_fabric_set_fabric_name(struct bfa_fcs_fabric_s *fabric,
1363 wwn_t fabric_name)
1364 {
1365 struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
1366 char pwwn_ptr[BFA_STRING_32];
1367 char fwwn_ptr[BFA_STRING_32];
1368
1369 bfa_trc(fabric->fcs, fabric_name);
1370
1371 if (fabric->fabric_name == 0) {
1372 /*
1373 * With BRCD switches, we don't get Fabric Name in FLOGI.
1374 * Don't generate a fabric name change event in this case.
1375 */
1376 fabric->fabric_name = fabric_name;
1377 } else {
1378 fabric->fabric_name = fabric_name;
1379 wwn2str(pwwn_ptr, bfa_fcs_lport_get_pwwn(&fabric->bport));
1380 wwn2str(fwwn_ptr,
1381 bfa_fcs_lport_get_fabric_name(&fabric->bport));
1382 BFA_LOG(KERN_WARNING, bfad, bfa_log_level,
1383 "Base port WWN = %s Fabric WWN = %s\n",
1384 pwwn_ptr, fwwn_ptr);
1385 bfa_fcs_fabric_aen_post(&fabric->bport,
1386 BFA_PORT_AEN_FABRIC_NAME_CHANGE);
1387 }
1388 }
1389
1390 /*
1391 * Returns FCS vf structure for a given vf_id.
1392 *
1393 * param[in] vf_id - VF_ID
1394 *
1395 * return
1396 * If lookup succeeds, retuns fcs vf object, otherwise returns NULL
1397 */
1398 bfa_fcs_vf_t *
1399 bfa_fcs_vf_lookup(struct bfa_fcs_s *fcs, u16 vf_id)
1400 {
1401 bfa_trc(fcs, vf_id);
1402 if (vf_id == FC_VF_ID_NULL)
1403 return &fcs->fabric;
1404
1405 return NULL;
1406 }
1407
1408 /*
1409 * Return the list of local logical ports present in the given VF.
1410 *
1411 * @param[in] vf vf for which logical ports are returned
1412 * @param[out] lpwwn returned logical port wwn list
1413 * @param[in,out] nlports in:size of lpwwn list;
1414 * out:total elements present,
1415 * actual elements returned is limited by the size
1416 */
1417 void
1418 bfa_fcs_vf_get_ports(bfa_fcs_vf_t *vf, wwn_t lpwwn[], int *nlports)
1419 {
1420 struct list_head *qe;
1421 struct bfa_fcs_vport_s *vport;
1422 int i = 0;
1423 struct bfa_fcs_s *fcs;
1424
1425 if (vf == NULL || lpwwn == NULL || *nlports == 0)
1426 return;
1427
1428 fcs = vf->fcs;
1429
1430 bfa_trc(fcs, vf->vf_id);
1431 bfa_trc(fcs, (uint32_t) *nlports);
1432
1433 lpwwn[i++] = vf->bport.port_cfg.pwwn;
1434
1435 list_for_each(qe, &vf->vport_q) {
1436 if (i >= *nlports)
1437 break;
1438
1439 vport = (struct bfa_fcs_vport_s *) qe;
1440 lpwwn[i++] = vport->lport.port_cfg.pwwn;
1441 }
1442
1443 bfa_trc(fcs, i);
1444 *nlports = i;
1445 }
1446
1447 /*
1448 * BFA FCS PPORT ( physical port)
1449 */
1450 static void
1451 bfa_fcs_port_event_handler(void *cbarg, enum bfa_port_linkstate event)
1452 {
1453 struct bfa_fcs_s *fcs = cbarg;
1454
1455 bfa_trc(fcs, event);
1456
1457 switch (event) {
1458 case BFA_PORT_LINKUP:
1459 bfa_fcs_fabric_link_up(&fcs->fabric);
1460 break;
1461
1462 case BFA_PORT_LINKDOWN:
1463 bfa_fcs_fabric_link_down(&fcs->fabric);
1464 break;
1465
1466 default:
1467 WARN_ON(1);
1468 }
1469 }
1470
1471 void
1472 bfa_fcs_port_attach(struct bfa_fcs_s *fcs)
1473 {
1474 bfa_fcport_event_register(fcs->bfa, bfa_fcs_port_event_handler, fcs);
1475 }
1476
1477 /*
1478 * BFA FCS UF ( Unsolicited Frames)
1479 */
1480
1481 /*
1482 * BFA callback for unsolicited frame receive handler.
1483 *
1484 * @param[in] cbarg callback arg for receive handler
1485 * @param[in] uf unsolicited frame descriptor
1486 *
1487 * @return None
1488 */
1489 static void
1490 bfa_fcs_uf_recv(void *cbarg, struct bfa_uf_s *uf)
1491 {
1492 struct bfa_fcs_s *fcs = (struct bfa_fcs_s *) cbarg;
1493 struct fchs_s *fchs = bfa_uf_get_frmbuf(uf);
1494 u16 len = bfa_uf_get_frmlen(uf);
1495 struct fc_vft_s *vft;
1496 struct bfa_fcs_fabric_s *fabric;
1497
1498 /*
1499 * check for VFT header
1500 */
1501 if (fchs->routing == FC_RTG_EXT_HDR &&
1502 fchs->cat_info == FC_CAT_VFT_HDR) {
1503 bfa_stats(fcs, uf.tagged);
1504 vft = bfa_uf_get_frmbuf(uf);
1505 if (fcs->port_vfid == vft->vf_id)
1506 fabric = &fcs->fabric;
1507 else
1508 fabric = bfa_fcs_vf_lookup(fcs, (u16) vft->vf_id);
1509
1510 /*
1511 * drop frame if vfid is unknown
1512 */
1513 if (!fabric) {
1514 WARN_ON(1);
1515 bfa_stats(fcs, uf.vfid_unknown);
1516 bfa_uf_free(uf);
1517 return;
1518 }
1519
1520 /*
1521 * skip vft header
1522 */
1523 fchs = (struct fchs_s *) (vft + 1);
1524 len -= sizeof(struct fc_vft_s);
1525
1526 bfa_trc(fcs, vft->vf_id);
1527 } else {
1528 bfa_stats(fcs, uf.untagged);
1529 fabric = &fcs->fabric;
1530 }
1531
1532 bfa_trc(fcs, ((u32 *) fchs)[0]);
1533 bfa_trc(fcs, ((u32 *) fchs)[1]);
1534 bfa_trc(fcs, ((u32 *) fchs)[2]);
1535 bfa_trc(fcs, ((u32 *) fchs)[3]);
1536 bfa_trc(fcs, ((u32 *) fchs)[4]);
1537 bfa_trc(fcs, ((u32 *) fchs)[5]);
1538 bfa_trc(fcs, len);
1539
1540 bfa_fcs_fabric_uf_recv(fabric, fchs, len);
1541 bfa_uf_free(uf);
1542 }
1543
1544 void
1545 bfa_fcs_uf_attach(struct bfa_fcs_s *fcs)
1546 {
1547 bfa_uf_recv_register(fcs->bfa, bfa_fcs_uf_recv, fcs);
1548 }
kernel source for telekom puls (alcatel/mediatek)