1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
4  * Copyright (c) 2014- QLogic Corporation.
5  * All rights reserved
6  * www.qlogic.com
7  *
8  * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
9  */
10 
11 /*
12  *  bfa_fcs.c BFA FCS main
13  */
14 
15 #include "bfad_drv.h"
16 #include "bfad_im.h"
17 #include "bfa_fcs.h"
18 #include "bfa_fcbuild.h"
19 
20 BFA_TRC_FILE(FCS, FCS);
21 
22 /*
23  *  fcs_api BFA FCS API
24  */
25 
26 static void
bfa_fcs_exit_comp(void * fcs_cbarg)27 bfa_fcs_exit_comp(void *fcs_cbarg)
28 {
29 	struct bfa_fcs_s      *fcs = fcs_cbarg;
30 	struct bfad_s         *bfad = fcs->bfad;
31 
32 	complete(&bfad->comp);
33 }
34 
35 /*
36  * fcs initialization, called once after bfa initialization is complete
37  */
38 void
bfa_fcs_init(struct bfa_fcs_s * fcs)39 bfa_fcs_init(struct bfa_fcs_s *fcs)
40 {
41 	bfa_sm_send_event(&fcs->fabric, BFA_FCS_FABRIC_SM_CREATE);
42 	bfa_trc(fcs, 0);
43 }
44 
45 /*
46  *  fcs_api BFA FCS API
47  */
48 
49 /*
50  * FCS update cfg - reset the pwwn/nwwn of fabric base logical port
51  * with values learned during bfa_init firmware GETATTR REQ.
52  */
53 void
bfa_fcs_update_cfg(struct bfa_fcs_s * fcs)54 bfa_fcs_update_cfg(struct bfa_fcs_s *fcs)
55 {
56 	struct bfa_fcs_fabric_s *fabric = &fcs->fabric;
57 	struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
58 	struct bfa_ioc_s *ioc = &fabric->fcs->bfa->ioc;
59 
60 	port_cfg->nwwn = ioc->attr->nwwn;
61 	port_cfg->pwwn = ioc->attr->pwwn;
62 }
63 
64 /*
65  * Stop FCS operations.
66  */
67 void
bfa_fcs_stop(struct bfa_fcs_s * fcs)68 bfa_fcs_stop(struct bfa_fcs_s *fcs)
69 {
70 	bfa_wc_init(&fcs->wc, bfa_fcs_exit_comp, fcs);
71 	bfa_wc_up(&fcs->wc);
72 	bfa_fcs_fabric_modstop(fcs);
73 	bfa_wc_wait(&fcs->wc);
74 }
75 
76 /*
77  * fcs pbc vport initialization
78  */
79 void
bfa_fcs_pbc_vport_init(struct bfa_fcs_s * fcs)80 bfa_fcs_pbc_vport_init(struct bfa_fcs_s *fcs)
81 {
82 	int i, npbc_vports;
83 	struct bfi_pbc_vport_s pbc_vports[BFI_PBC_MAX_VPORTS];
84 
85 	/* Initialize pbc vports */
86 	if (!fcs->min_cfg) {
87 		npbc_vports =
88 			bfa_iocfc_get_pbc_vports(fcs->bfa, pbc_vports);
89 		for (i = 0; i < npbc_vports; i++)
90 			bfa_fcb_pbc_vport_create(fcs->bfa->bfad, pbc_vports[i]);
91 	}
92 }
93 
94 /*
95  *	brief
96  *		FCS driver details initialization.
97  *
98  *	param[in]		fcs		FCS instance
99  *	param[in]		driver_info	Driver Details
100  *
101  *	return None
102  */
103 void
bfa_fcs_driver_info_init(struct bfa_fcs_s * fcs,struct bfa_fcs_driver_info_s * driver_info)104 bfa_fcs_driver_info_init(struct bfa_fcs_s *fcs,
105 			struct bfa_fcs_driver_info_s *driver_info)
106 {
107 
108 	fcs->driver_info = *driver_info;
109 
110 	bfa_fcs_fabric_psymb_init(&fcs->fabric);
111 	bfa_fcs_fabric_nsymb_init(&fcs->fabric);
112 }
113 
114 /*
115  *	brief
116  *		FCS instance cleanup and exit.
117  *
118  *	param[in]		fcs			FCS instance
119  *	return None
120  */
121 void
bfa_fcs_exit(struct bfa_fcs_s * fcs)122 bfa_fcs_exit(struct bfa_fcs_s *fcs)
123 {
124 	bfa_wc_init(&fcs->wc, bfa_fcs_exit_comp, fcs);
125 	bfa_wc_up(&fcs->wc);
126 	bfa_trc(fcs, 0);
127 	bfa_lps_delete(fcs->fabric.lps);
128 	bfa_sm_send_event(&fcs->fabric, BFA_FCS_FABRIC_SM_DELETE);
129 	bfa_wc_wait(&fcs->wc);
130 }
131 
132 /*
133  * Fabric module implementation.
134  */
135 
136 #define BFA_FCS_FABRIC_RETRY_DELAY	(2000)	/* Milliseconds */
137 #define BFA_FCS_FABRIC_CLEANUP_DELAY	(10000)	/* Milliseconds */
138 
139 #define bfa_fcs_fabric_set_opertype(__fabric) do {			\
140 	if (bfa_fcport_get_topology((__fabric)->fcs->bfa)		\
141 				== BFA_PORT_TOPOLOGY_P2P) {		\
142 		if (fabric->fab_type == BFA_FCS_FABRIC_SWITCHED)	\
143 			(__fabric)->oper_type = BFA_PORT_TYPE_NPORT;	\
144 		else							\
145 			(__fabric)->oper_type = BFA_PORT_TYPE_P2P;	\
146 	} else								\
147 		(__fabric)->oper_type = BFA_PORT_TYPE_NLPORT;		\
148 } while (0)
149 
150 /*
151  * forward declarations
152  */
153 static void bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric);
154 static void bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric);
155 static void bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric);
156 static void bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric);
157 static void bfa_fcs_fabric_delay(void *cbarg);
158 static void bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric);
159 static void bfa_fcs_fabric_delete_comp(void *cbarg);
160 static void bfa_fcs_fabric_stop(struct bfa_fcs_fabric_s *fabric);
161 static void bfa_fcs_fabric_stop_comp(void *cbarg);
162 static void bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric,
163 				      struct fchs_s *fchs, u16 len);
164 static void bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
165 					 struct fchs_s *fchs, u16 len);
166 static void bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric);
167 static void bfa_fcs_fabric_flogiacc_comp(void *fcsarg,
168 					 struct bfa_fcxp_s *fcxp, void *cbarg,
169 					 bfa_status_t status,
170 					 u32 rsp_len,
171 					 u32 resid_len,
172 					 struct fchs_s *rspfchs);
173 
174 static void	bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
175 					 enum bfa_fcs_fabric_event event);
176 static void	bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
177 					  enum bfa_fcs_fabric_event event);
178 static void	bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
179 					   enum bfa_fcs_fabric_event event);
180 static void	bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
181 					enum bfa_fcs_fabric_event event);
182 static void	bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
183 					      enum bfa_fcs_fabric_event event);
184 static void	bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
185 				       enum bfa_fcs_fabric_event event);
186 static void	bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
187 					   enum bfa_fcs_fabric_event event);
188 static void	bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
189 				       enum bfa_fcs_fabric_event event);
190 static void	bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
191 					    enum bfa_fcs_fabric_event event);
192 static void	bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
193 					   enum bfa_fcs_fabric_event event);
194 static void	bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
195 					   enum bfa_fcs_fabric_event event);
196 static void	bfa_fcs_fabric_sm_stopping(struct bfa_fcs_fabric_s *fabric,
197 					   enum bfa_fcs_fabric_event event);
198 static void	bfa_fcs_fabric_sm_cleanup(struct bfa_fcs_fabric_s *fabric,
199 					  enum bfa_fcs_fabric_event event);
200 /*
201  *   Beginning state before fabric creation.
202  */
203 static void
bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s * fabric,enum bfa_fcs_fabric_event event)204 bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
205 			 enum bfa_fcs_fabric_event event)
206 {
207 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
208 	bfa_trc(fabric->fcs, event);
209 
210 	switch (event) {
211 	case BFA_FCS_FABRIC_SM_CREATE:
212 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
213 		bfa_fcs_fabric_init(fabric);
214 		bfa_fcs_lport_init(&fabric->bport, &fabric->bport.port_cfg);
215 		break;
216 
217 	case BFA_FCS_FABRIC_SM_LINK_UP:
218 	case BFA_FCS_FABRIC_SM_LINK_DOWN:
219 		break;
220 
221 	default:
222 		bfa_sm_fault(fabric->fcs, event);
223 	}
224 }
225 
226 /*
227  *   Beginning state before fabric creation.
228  */
229 static void
bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s * fabric,enum bfa_fcs_fabric_event event)230 bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
231 			  enum bfa_fcs_fabric_event event)
232 {
233 	struct bfa_s	*bfa = fabric->fcs->bfa;
234 
235 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
236 	bfa_trc(fabric->fcs, event);
237 
238 	switch (event) {
239 	case BFA_FCS_FABRIC_SM_START:
240 		if (!bfa_fcport_is_linkup(fabric->fcs->bfa)) {
241 			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
242 			break;
243 		}
244 		if (bfa_fcport_get_topology(bfa) ==
245 				BFA_PORT_TOPOLOGY_LOOP) {
246 			fabric->fab_type = BFA_FCS_FABRIC_LOOP;
247 			fabric->bport.pid = bfa_fcport_get_myalpa(bfa);
248 			fabric->bport.pid = bfa_hton3b(fabric->bport.pid);
249 			bfa_sm_set_state(fabric,
250 					bfa_fcs_fabric_sm_online);
251 			bfa_fcs_fabric_set_opertype(fabric);
252 			bfa_fcs_lport_online(&fabric->bport);
253 		} else {
254 			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
255 			bfa_fcs_fabric_login(fabric);
256 		}
257 		break;
258 
259 	case BFA_FCS_FABRIC_SM_LINK_UP:
260 	case BFA_FCS_FABRIC_SM_LINK_DOWN:
261 		break;
262 
263 	case BFA_FCS_FABRIC_SM_DELETE:
264 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
265 		bfa_fcs_fabric_delete(fabric);
266 		break;
267 
268 	default:
269 		bfa_sm_fault(fabric->fcs, event);
270 	}
271 }
272 
273 /*
274  *   Link is down, awaiting LINK UP event from port. This is also the
275  *   first state at fabric creation.
276  */
277 static void
bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s * fabric,enum bfa_fcs_fabric_event event)278 bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
279 			   enum bfa_fcs_fabric_event event)
280 {
281 	struct bfa_s	*bfa = fabric->fcs->bfa;
282 
283 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
284 	bfa_trc(fabric->fcs, event);
285 
286 	switch (event) {
287 	case BFA_FCS_FABRIC_SM_LINK_UP:
288 		if (bfa_fcport_get_topology(bfa) != BFA_PORT_TOPOLOGY_LOOP) {
289 			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
290 			bfa_fcs_fabric_login(fabric);
291 			break;
292 		}
293 		fabric->fab_type = BFA_FCS_FABRIC_LOOP;
294 		fabric->bport.pid = bfa_fcport_get_myalpa(bfa);
295 		fabric->bport.pid = bfa_hton3b(fabric->bport.pid);
296 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
297 		bfa_fcs_fabric_set_opertype(fabric);
298 		bfa_fcs_lport_online(&fabric->bport);
299 		break;
300 
301 	case BFA_FCS_FABRIC_SM_RETRY_OP:
302 	case BFA_FCS_FABRIC_SM_LOOPBACK:
303 		break;
304 
305 	case BFA_FCS_FABRIC_SM_DELETE:
306 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
307 		bfa_fcs_fabric_delete(fabric);
308 		break;
309 
310 	case BFA_FCS_FABRIC_SM_STOP:
311 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_cleanup);
312 		bfa_fcs_fabric_stop(fabric);
313 		break;
314 
315 	default:
316 		bfa_sm_fault(fabric->fcs, event);
317 	}
318 }
319 
320 /*
321  *   FLOGI is in progress, awaiting FLOGI reply.
322  */
323 static void
bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s * fabric,enum bfa_fcs_fabric_event event)324 bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
325 			enum bfa_fcs_fabric_event event)
326 {
327 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
328 	bfa_trc(fabric->fcs, event);
329 
330 	switch (event) {
331 	case BFA_FCS_FABRIC_SM_CONT_OP:
332 
333 		bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
334 					   fabric->bb_credit);
335 		fabric->fab_type = BFA_FCS_FABRIC_SWITCHED;
336 
337 		if (fabric->auth_reqd && fabric->is_auth) {
338 			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth);
339 			bfa_trc(fabric->fcs, event);
340 		} else {
341 			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
342 			bfa_fcs_fabric_notify_online(fabric);
343 		}
344 		break;
345 
346 	case BFA_FCS_FABRIC_SM_RETRY_OP:
347 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi_retry);
348 		bfa_timer_start(fabric->fcs->bfa, &fabric->delay_timer,
349 				bfa_fcs_fabric_delay, fabric,
350 				BFA_FCS_FABRIC_RETRY_DELAY);
351 		break;
352 
353 	case BFA_FCS_FABRIC_SM_LOOPBACK:
354 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_loopback);
355 		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
356 		bfa_fcs_fabric_set_opertype(fabric);
357 		break;
358 
359 	case BFA_FCS_FABRIC_SM_NO_FABRIC:
360 		fabric->fab_type = BFA_FCS_FABRIC_N2N;
361 		bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
362 					   fabric->bb_credit);
363 		bfa_fcs_fabric_notify_online(fabric);
364 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_nofabric);
365 		break;
366 
367 	case BFA_FCS_FABRIC_SM_LINK_DOWN:
368 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
369 		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
370 		break;
371 
372 	case BFA_FCS_FABRIC_SM_DELETE:
373 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
374 		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
375 		bfa_fcs_fabric_delete(fabric);
376 		break;
377 
378 	default:
379 		bfa_sm_fault(fabric->fcs, event);
380 	}
381 }
382 
383 
384 static void
bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s * fabric,enum bfa_fcs_fabric_event event)385 bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
386 			      enum bfa_fcs_fabric_event event)
387 {
388 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
389 	bfa_trc(fabric->fcs, event);
390 
391 	switch (event) {
392 	case BFA_FCS_FABRIC_SM_DELAYED:
393 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
394 		bfa_fcs_fabric_login(fabric);
395 		break;
396 
397 	case BFA_FCS_FABRIC_SM_LINK_DOWN:
398 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
399 		bfa_timer_stop(&fabric->delay_timer);
400 		break;
401 
402 	case BFA_FCS_FABRIC_SM_DELETE:
403 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
404 		bfa_timer_stop(&fabric->delay_timer);
405 		bfa_fcs_fabric_delete(fabric);
406 		break;
407 
408 	default:
409 		bfa_sm_fault(fabric->fcs, event);
410 	}
411 }
412 
413 /*
414  *   Authentication is in progress, awaiting authentication results.
415  */
416 static void
bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s * fabric,enum bfa_fcs_fabric_event event)417 bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
418 		       enum bfa_fcs_fabric_event event)
419 {
420 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
421 	bfa_trc(fabric->fcs, event);
422 
423 	switch (event) {
424 	case BFA_FCS_FABRIC_SM_AUTH_FAILED:
425 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
426 		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
427 		break;
428 
429 	case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
430 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
431 		bfa_fcs_fabric_notify_online(fabric);
432 		break;
433 
434 	case BFA_FCS_FABRIC_SM_PERF_EVFP:
435 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp);
436 		break;
437 
438 	case BFA_FCS_FABRIC_SM_LINK_DOWN:
439 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
440 		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
441 		break;
442 
443 	case BFA_FCS_FABRIC_SM_DELETE:
444 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
445 		bfa_fcs_fabric_delete(fabric);
446 		break;
447 
448 	default:
449 		bfa_sm_fault(fabric->fcs, event);
450 	}
451 }
452 
453 /*
454  *   Authentication failed
455  */
456 void
bfa_fcs_fabric_sm_auth_failed(struct bfa_fcs_fabric_s * fabric,enum bfa_fcs_fabric_event event)457 bfa_fcs_fabric_sm_auth_failed(struct bfa_fcs_fabric_s *fabric,
458 			      enum bfa_fcs_fabric_event event)
459 {
460 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
461 	bfa_trc(fabric->fcs, event);
462 
463 	switch (event) {
464 	case BFA_FCS_FABRIC_SM_LINK_DOWN:
465 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
466 		bfa_fcs_fabric_notify_offline(fabric);
467 		break;
468 
469 	case BFA_FCS_FABRIC_SM_DELETE:
470 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
471 		bfa_fcs_fabric_delete(fabric);
472 		break;
473 
474 	default:
475 		bfa_sm_fault(fabric->fcs, event);
476 	}
477 }
478 
479 /*
480  *   Port is in loopback mode.
481  */
482 void
bfa_fcs_fabric_sm_loopback(struct bfa_fcs_fabric_s * fabric,enum bfa_fcs_fabric_event event)483 bfa_fcs_fabric_sm_loopback(struct bfa_fcs_fabric_s *fabric,
484 			   enum bfa_fcs_fabric_event event)
485 {
486 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
487 	bfa_trc(fabric->fcs, event);
488 
489 	switch (event) {
490 	case BFA_FCS_FABRIC_SM_LINK_DOWN:
491 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
492 		bfa_fcs_fabric_notify_offline(fabric);
493 		break;
494 
495 	case BFA_FCS_FABRIC_SM_DELETE:
496 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
497 		bfa_fcs_fabric_delete(fabric);
498 		break;
499 
500 	default:
501 		bfa_sm_fault(fabric->fcs, event);
502 	}
503 }
504 
505 /*
506  *   There is no attached fabric - private loop or NPort-to-NPort topology.
507  */
508 static void
bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s * fabric,enum bfa_fcs_fabric_event event)509 bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
510 			   enum bfa_fcs_fabric_event event)
511 {
512 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
513 	bfa_trc(fabric->fcs, event);
514 
515 	switch (event) {
516 	case BFA_FCS_FABRIC_SM_LINK_DOWN:
517 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
518 		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
519 		bfa_fcs_fabric_notify_offline(fabric);
520 		break;
521 
522 	case BFA_FCS_FABRIC_SM_DELETE:
523 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
524 		bfa_fcs_fabric_delete(fabric);
525 		break;
526 
527 	case BFA_FCS_FABRIC_SM_NO_FABRIC:
528 		bfa_trc(fabric->fcs, fabric->bb_credit);
529 		bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
530 					   fabric->bb_credit);
531 		break;
532 
533 	case BFA_FCS_FABRIC_SM_RETRY_OP:
534 		break;
535 
536 	default:
537 		bfa_sm_fault(fabric->fcs, event);
538 	}
539 }
540 
541 /*
542  *   Fabric is online - normal operating state.
543  */
544 void
bfa_fcs_fabric_sm_online(struct bfa_fcs_fabric_s * fabric,enum bfa_fcs_fabric_event event)545 bfa_fcs_fabric_sm_online(struct bfa_fcs_fabric_s *fabric,
546 			 enum bfa_fcs_fabric_event event)
547 {
548 	struct bfa_s	*bfa = fabric->fcs->bfa;
549 
550 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
551 	bfa_trc(fabric->fcs, event);
552 
553 	switch (event) {
554 	case BFA_FCS_FABRIC_SM_LINK_DOWN:
555 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
556 		if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP) {
557 			bfa_fcs_lport_offline(&fabric->bport);
558 		} else {
559 			bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
560 			bfa_fcs_fabric_notify_offline(fabric);
561 		}
562 		break;
563 
564 	case BFA_FCS_FABRIC_SM_DELETE:
565 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
566 		bfa_fcs_fabric_delete(fabric);
567 		break;
568 
569 	case BFA_FCS_FABRIC_SM_STOP:
570 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_stopping);
571 		bfa_fcs_fabric_stop(fabric);
572 		break;
573 
574 	case BFA_FCS_FABRIC_SM_AUTH_FAILED:
575 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
576 		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
577 		break;
578 
579 	case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
580 		break;
581 
582 	default:
583 		bfa_sm_fault(fabric->fcs, event);
584 	}
585 }
586 
587 /*
588  *   Exchanging virtual fabric parameters.
589  */
590 static void
bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s * fabric,enum bfa_fcs_fabric_event event)591 bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
592 		       enum bfa_fcs_fabric_event event)
593 {
594 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
595 	bfa_trc(fabric->fcs, event);
596 
597 	switch (event) {
598 	case BFA_FCS_FABRIC_SM_CONT_OP:
599 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp_done);
600 		break;
601 
602 	case BFA_FCS_FABRIC_SM_ISOLATE:
603 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_isolated);
604 		break;
605 
606 	default:
607 		bfa_sm_fault(fabric->fcs, event);
608 	}
609 }
610 
611 /*
612  *   EVFP exchange complete and VFT tagging is enabled.
613  */
614 static void
bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s * fabric,enum bfa_fcs_fabric_event event)615 bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
616 			    enum bfa_fcs_fabric_event event)
617 {
618 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
619 	bfa_trc(fabric->fcs, event);
620 }
621 
622 /*
623  *   Port is isolated after EVFP exchange due to VF_ID mismatch (N and F).
624  */
625 static void
bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s * fabric,enum bfa_fcs_fabric_event event)626 bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
627 			   enum bfa_fcs_fabric_event event)
628 {
629 	struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
630 	char	pwwn_ptr[BFA_STRING_32];
631 
632 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
633 	bfa_trc(fabric->fcs, event);
634 	wwn2str(pwwn_ptr, fabric->bport.port_cfg.pwwn);
635 
636 	BFA_LOG(KERN_INFO, bfad, bfa_log_level,
637 		"Port is isolated due to VF_ID mismatch. "
638 		"PWWN: %s Port VF_ID: %04x switch port VF_ID: %04x.",
639 		pwwn_ptr, fabric->fcs->port_vfid,
640 		fabric->event_arg.swp_vfid);
641 }
642 
643 /*
644  *   Fabric is being deleted, awaiting vport delete completions.
645  */
646 static void
bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s * fabric,enum bfa_fcs_fabric_event event)647 bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
648 			   enum bfa_fcs_fabric_event event)
649 {
650 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
651 	bfa_trc(fabric->fcs, event);
652 
653 	switch (event) {
654 	case BFA_FCS_FABRIC_SM_DELCOMP:
655 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
656 		bfa_wc_down(&fabric->fcs->wc);
657 		break;
658 
659 	case BFA_FCS_FABRIC_SM_LINK_UP:
660 		break;
661 
662 	case BFA_FCS_FABRIC_SM_LINK_DOWN:
663 		bfa_fcs_fabric_notify_offline(fabric);
664 		break;
665 
666 	default:
667 		bfa_sm_fault(fabric->fcs, event);
668 	}
669 }
670 
671 /*
672  * Fabric is being stopped, awaiting vport stop completions.
673  */
674 static void
bfa_fcs_fabric_sm_stopping(struct bfa_fcs_fabric_s * fabric,enum bfa_fcs_fabric_event event)675 bfa_fcs_fabric_sm_stopping(struct bfa_fcs_fabric_s *fabric,
676 			   enum bfa_fcs_fabric_event event)
677 {
678 	struct bfa_s	*bfa = fabric->fcs->bfa;
679 
680 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
681 	bfa_trc(fabric->fcs, event);
682 
683 	switch (event) {
684 	case BFA_FCS_FABRIC_SM_STOPCOMP:
685 		if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP) {
686 			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
687 		} else {
688 			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_cleanup);
689 			bfa_sm_send_event(fabric->lps, BFA_LPS_SM_LOGOUT);
690 		}
691 		break;
692 
693 	case BFA_FCS_FABRIC_SM_LINK_UP:
694 		break;
695 
696 	case BFA_FCS_FABRIC_SM_LINK_DOWN:
697 		if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP)
698 			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
699 		else
700 			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_cleanup);
701 		break;
702 
703 	default:
704 		bfa_sm_fault(fabric->fcs, event);
705 	}
706 }
707 
708 /*
709  * Fabric is being stopped, cleanup without FLOGO
710  */
711 static void
bfa_fcs_fabric_sm_cleanup(struct bfa_fcs_fabric_s * fabric,enum bfa_fcs_fabric_event event)712 bfa_fcs_fabric_sm_cleanup(struct bfa_fcs_fabric_s *fabric,
713 			  enum bfa_fcs_fabric_event event)
714 {
715 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
716 	bfa_trc(fabric->fcs, event);
717 
718 	switch (event) {
719 	case BFA_FCS_FABRIC_SM_STOPCOMP:
720 	case BFA_FCS_FABRIC_SM_LOGOCOMP:
721 		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
722 		bfa_wc_down(&(fabric->fcs)->wc);
723 		break;
724 
725 	case BFA_FCS_FABRIC_SM_LINK_DOWN:
726 		/*
727 		 * Ignore - can get this event if we get notified about IOC down
728 		 * before the fabric completion callbk is done.
729 		 */
730 		break;
731 
732 	default:
733 		bfa_sm_fault(fabric->fcs, event);
734 	}
735 }
736 
737 /*
738  *  fcs_fabric_private fabric private functions
739  */
740 
741 static void
bfa_fcs_fabric_init(struct bfa_fcs_fabric_s * fabric)742 bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric)
743 {
744 	struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
745 
746 	port_cfg->roles = BFA_LPORT_ROLE_FCP_IM;
747 	port_cfg->nwwn = fabric->fcs->bfa->ioc.attr->nwwn;
748 	port_cfg->pwwn = fabric->fcs->bfa->ioc.attr->pwwn;
749 }
750 
751 /*
752  * Port Symbolic Name Creation for base port.
753  */
754 void
bfa_fcs_fabric_psymb_init(struct bfa_fcs_fabric_s * fabric)755 bfa_fcs_fabric_psymb_init(struct bfa_fcs_fabric_s *fabric)
756 {
757 	struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
758 	char model[BFA_ADAPTER_MODEL_NAME_LEN] = {0};
759 	struct bfa_fcs_driver_info_s *driver_info = &fabric->fcs->driver_info;
760 
761 	bfa_ioc_get_adapter_model(&fabric->fcs->bfa->ioc, model);
762 
763 	/* Model name/number */
764 	strscpy(port_cfg->sym_name.symname, model,
765 		BFA_SYMNAME_MAXLEN);
766 	strlcat(port_cfg->sym_name.symname, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
767 		BFA_SYMNAME_MAXLEN);
768 
769 	/* Driver Version */
770 	strlcat(port_cfg->sym_name.symname, driver_info->version,
771 		BFA_SYMNAME_MAXLEN);
772 	strlcat(port_cfg->sym_name.symname, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
773 		BFA_SYMNAME_MAXLEN);
774 
775 	/* Host machine name */
776 	strlcat(port_cfg->sym_name.symname,
777 		driver_info->host_machine_name,
778 		BFA_SYMNAME_MAXLEN);
779 	strlcat(port_cfg->sym_name.symname, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
780 		BFA_SYMNAME_MAXLEN);
781 
782 	/*
783 	 * Host OS Info :
784 	 * If OS Patch Info is not there, do not truncate any bytes from the
785 	 * OS name string and instead copy the entire OS info string (64 bytes).
786 	 */
787 	if (driver_info->host_os_patch[0] == '\0') {
788 		strlcat(port_cfg->sym_name.symname,
789 			driver_info->host_os_name,
790 			BFA_SYMNAME_MAXLEN);
791 		strlcat(port_cfg->sym_name.symname,
792 			BFA_FCS_PORT_SYMBNAME_SEPARATOR,
793 			BFA_SYMNAME_MAXLEN);
794 	} else {
795 		strlcat(port_cfg->sym_name.symname,
796 			driver_info->host_os_name,
797 			BFA_SYMNAME_MAXLEN);
798 		strlcat(port_cfg->sym_name.symname,
799 			BFA_FCS_PORT_SYMBNAME_SEPARATOR,
800 			BFA_SYMNAME_MAXLEN);
801 
802 		/* Append host OS Patch Info */
803 		strlcat(port_cfg->sym_name.symname,
804 			driver_info->host_os_patch,
805 			BFA_SYMNAME_MAXLEN);
806 	}
807 
808 	/* null terminate */
809 	port_cfg->sym_name.symname[BFA_SYMNAME_MAXLEN - 1] = 0;
810 }
811 
812 /*
813  * Node Symbolic Name Creation for base port and all vports
814  */
815 void
bfa_fcs_fabric_nsymb_init(struct bfa_fcs_fabric_s * fabric)816 bfa_fcs_fabric_nsymb_init(struct bfa_fcs_fabric_s *fabric)
817 {
818 	struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
819 	char model[BFA_ADAPTER_MODEL_NAME_LEN] = {0};
820 	struct bfa_fcs_driver_info_s *driver_info = &fabric->fcs->driver_info;
821 
822 	bfa_ioc_get_adapter_model(&fabric->fcs->bfa->ioc, model);
823 
824 	/* Model name/number */
825 	strscpy(port_cfg->node_sym_name.symname, model,
826 		BFA_SYMNAME_MAXLEN);
827 	strlcat(port_cfg->node_sym_name.symname,
828 			BFA_FCS_PORT_SYMBNAME_SEPARATOR,
829 			BFA_SYMNAME_MAXLEN);
830 
831 	/* Driver Version */
832 	strlcat(port_cfg->node_sym_name.symname, (char *)driver_info->version,
833 		BFA_SYMNAME_MAXLEN);
834 	strlcat(port_cfg->node_sym_name.symname,
835 			BFA_FCS_PORT_SYMBNAME_SEPARATOR,
836 			BFA_SYMNAME_MAXLEN);
837 
838 	/* Host machine name */
839 	strlcat(port_cfg->node_sym_name.symname,
840 		driver_info->host_machine_name,
841 		BFA_SYMNAME_MAXLEN);
842 	strlcat(port_cfg->node_sym_name.symname,
843 			BFA_FCS_PORT_SYMBNAME_SEPARATOR,
844 			BFA_SYMNAME_MAXLEN);
845 
846 	/* null terminate */
847 	port_cfg->node_sym_name.symname[BFA_SYMNAME_MAXLEN - 1] = 0;
848 }
849 
850 /*
851  * bfa lps login completion callback
852  */
853 void
bfa_cb_lps_flogi_comp(void * bfad,void * uarg,bfa_status_t status)854 bfa_cb_lps_flogi_comp(void *bfad, void *uarg, bfa_status_t status)
855 {
856 	struct bfa_fcs_fabric_s *fabric = uarg;
857 
858 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
859 	bfa_trc(fabric->fcs, status);
860 
861 	switch (status) {
862 	case BFA_STATUS_OK:
863 		fabric->stats.flogi_accepts++;
864 		break;
865 
866 	case BFA_STATUS_INVALID_MAC:
867 		/* Only for CNA */
868 		fabric->stats.flogi_acc_err++;
869 		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
870 
871 		return;
872 
873 	case BFA_STATUS_EPROTOCOL:
874 		switch (fabric->lps->ext_status) {
875 		case BFA_EPROTO_BAD_ACCEPT:
876 			fabric->stats.flogi_acc_err++;
877 			break;
878 
879 		case BFA_EPROTO_UNKNOWN_RSP:
880 			fabric->stats.flogi_unknown_rsp++;
881 			break;
882 
883 		default:
884 			break;
885 		}
886 		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
887 
888 		return;
889 
890 	case BFA_STATUS_FABRIC_RJT:
891 		fabric->stats.flogi_rejects++;
892 		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
893 		return;
894 
895 	default:
896 		fabric->stats.flogi_rsp_err++;
897 		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
898 		return;
899 	}
900 
901 	fabric->bb_credit = fabric->lps->pr_bbcred;
902 	bfa_trc(fabric->fcs, fabric->bb_credit);
903 
904 	if (!(fabric->lps->brcd_switch))
905 		fabric->fabric_name =  fabric->lps->pr_nwwn;
906 
907 	/*
908 	 * Check port type. It should be 1 = F-port.
909 	 */
910 	if (fabric->lps->fport) {
911 		fabric->bport.pid = fabric->lps->lp_pid;
912 		fabric->is_npiv = fabric->lps->npiv_en;
913 		fabric->is_auth = fabric->lps->auth_req;
914 		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_CONT_OP);
915 	} else {
916 		/*
917 		 * Nport-2-Nport direct attached
918 		 */
919 		fabric->bport.port_topo.pn2n.rem_port_wwn =
920 			fabric->lps->pr_pwwn;
921 		fabric->fab_type = BFA_FCS_FABRIC_N2N;
922 		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
923 	}
924 
925 	bfa_trc(fabric->fcs, fabric->bport.pid);
926 	bfa_trc(fabric->fcs, fabric->is_npiv);
927 	bfa_trc(fabric->fcs, fabric->is_auth);
928 }
929 /*
930  *		Allocate and send FLOGI.
931  */
932 static void
bfa_fcs_fabric_login(struct bfa_fcs_fabric_s * fabric)933 bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric)
934 {
935 	struct bfa_s		*bfa = fabric->fcs->bfa;
936 	struct bfa_lport_cfg_s	*pcfg = &fabric->bport.port_cfg;
937 	u8			alpa = 0;
938 
939 
940 	bfa_lps_flogi(fabric->lps, fabric, alpa, bfa_fcport_get_maxfrsize(bfa),
941 		      pcfg->pwwn, pcfg->nwwn, fabric->auth_reqd);
942 
943 	fabric->stats.flogi_sent++;
944 }
945 
946 static void
bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s * fabric)947 bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric)
948 {
949 	struct bfa_fcs_vport_s *vport;
950 	struct list_head	      *qe, *qen;
951 
952 	bfa_trc(fabric->fcs, fabric->fabric_name);
953 
954 	bfa_fcs_fabric_set_opertype(fabric);
955 	fabric->stats.fabric_onlines++;
956 
957 	/*
958 	 * notify online event to base and then virtual ports
959 	 */
960 	bfa_fcs_lport_online(&fabric->bport);
961 
962 	list_for_each_safe(qe, qen, &fabric->vport_q) {
963 		vport = (struct bfa_fcs_vport_s *) qe;
964 		bfa_fcs_vport_online(vport);
965 	}
966 }
967 
968 static void
bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s * fabric)969 bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric)
970 {
971 	struct bfa_fcs_vport_s *vport;
972 	struct list_head	      *qe, *qen;
973 
974 	bfa_trc(fabric->fcs, fabric->fabric_name);
975 	fabric->stats.fabric_offlines++;
976 
977 	/*
978 	 * notify offline event first to vports and then base port.
979 	 */
980 	list_for_each_safe(qe, qen, &fabric->vport_q) {
981 		vport = (struct bfa_fcs_vport_s *) qe;
982 		bfa_fcs_vport_offline(vport);
983 	}
984 
985 	bfa_fcs_lport_offline(&fabric->bport);
986 
987 	fabric->fabric_name = 0;
988 	fabric->fabric_ip_addr[0] = 0;
989 }
990 
991 static void
bfa_fcs_fabric_delay(void * cbarg)992 bfa_fcs_fabric_delay(void *cbarg)
993 {
994 	struct bfa_fcs_fabric_s *fabric = cbarg;
995 
996 	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELAYED);
997 }
998 
999 /*
1000  * Stop all vports and wait for vport stop completions.
1001  */
1002 static void
bfa_fcs_fabric_stop(struct bfa_fcs_fabric_s * fabric)1003 bfa_fcs_fabric_stop(struct bfa_fcs_fabric_s *fabric)
1004 {
1005 	struct bfa_fcs_vport_s *vport;
1006 	struct list_head	*qe, *qen;
1007 
1008 	bfa_wc_init(&fabric->stop_wc, bfa_fcs_fabric_stop_comp, fabric);
1009 
1010 	list_for_each_safe(qe, qen, &fabric->vport_q) {
1011 		vport = (struct bfa_fcs_vport_s *) qe;
1012 		bfa_wc_up(&fabric->stop_wc);
1013 		bfa_fcs_vport_fcs_stop(vport);
1014 	}
1015 
1016 	bfa_wc_up(&fabric->stop_wc);
1017 	bfa_fcs_lport_stop(&fabric->bport);
1018 	bfa_wc_wait(&fabric->stop_wc);
1019 }
1020 
1021 /*
1022  * Delete all vports and wait for vport delete completions.
1023  */
1024 static void
bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s * fabric)1025 bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric)
1026 {
1027 	struct bfa_fcs_vport_s *vport;
1028 	struct list_head	      *qe, *qen;
1029 
1030 	list_for_each_safe(qe, qen, &fabric->vport_q) {
1031 		vport = (struct bfa_fcs_vport_s *) qe;
1032 		bfa_fcs_vport_fcs_delete(vport);
1033 	}
1034 
1035 	bfa_fcs_lport_delete(&fabric->bport);
1036 	bfa_wc_wait(&fabric->wc);
1037 }
1038 
1039 static void
bfa_fcs_fabric_delete_comp(void * cbarg)1040 bfa_fcs_fabric_delete_comp(void *cbarg)
1041 {
1042 	struct bfa_fcs_fabric_s *fabric = cbarg;
1043 
1044 	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELCOMP);
1045 }
1046 
1047 static void
bfa_fcs_fabric_stop_comp(void * cbarg)1048 bfa_fcs_fabric_stop_comp(void *cbarg)
1049 {
1050 	struct bfa_fcs_fabric_s *fabric = cbarg;
1051 
1052 	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_STOPCOMP);
1053 }
1054 
1055 /*
1056  *  fcs_fabric_public fabric public functions
1057  */
1058 
1059 /*
1060  * Fabric module stop -- stop FCS actions
1061  */
1062 void
bfa_fcs_fabric_modstop(struct bfa_fcs_s * fcs)1063 bfa_fcs_fabric_modstop(struct bfa_fcs_s *fcs)
1064 {
1065 	struct bfa_fcs_fabric_s *fabric;
1066 
1067 	bfa_trc(fcs, 0);
1068 	fabric = &fcs->fabric;
1069 	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_STOP);
1070 }
1071 
1072 /*
1073  * Fabric module start -- kick starts FCS actions
1074  */
1075 void
bfa_fcs_fabric_modstart(struct bfa_fcs_s * fcs)1076 bfa_fcs_fabric_modstart(struct bfa_fcs_s *fcs)
1077 {
1078 	struct bfa_fcs_fabric_s *fabric;
1079 
1080 	bfa_trc(fcs, 0);
1081 	fabric = &fcs->fabric;
1082 	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_START);
1083 }
1084 
1085 
1086 /*
1087  *   Link up notification from BFA physical port module.
1088  */
1089 void
bfa_fcs_fabric_link_up(struct bfa_fcs_fabric_s * fabric)1090 bfa_fcs_fabric_link_up(struct bfa_fcs_fabric_s *fabric)
1091 {
1092 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
1093 	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_UP);
1094 }
1095 
1096 /*
1097  *   Link down notification from BFA physical port module.
1098  */
1099 void
bfa_fcs_fabric_link_down(struct bfa_fcs_fabric_s * fabric)1100 bfa_fcs_fabric_link_down(struct bfa_fcs_fabric_s *fabric)
1101 {
1102 	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
1103 	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_DOWN);
1104 }
1105 
1106 /*
1107  *   A child vport is being created in the fabric.
1108  *
1109  *   Call from vport module at vport creation. A list of base port and vports
1110  *   belonging to a fabric is maintained to propagate link events.
1111  *
1112  *   param[in] fabric - Fabric instance. This can be a base fabric or vf.
1113  *   param[in] vport  - Vport being created.
1114  *
1115  *   @return None (always succeeds)
1116  */
1117 void
bfa_fcs_fabric_addvport(struct bfa_fcs_fabric_s * fabric,struct bfa_fcs_vport_s * vport)1118 bfa_fcs_fabric_addvport(struct bfa_fcs_fabric_s *fabric,
1119 			struct bfa_fcs_vport_s *vport)
1120 {
1121 	/*
1122 	 * - add vport to fabric's vport_q
1123 	 */
1124 	bfa_trc(fabric->fcs, fabric->vf_id);
1125 
1126 	list_add_tail(&vport->qe, &fabric->vport_q);
1127 	fabric->num_vports++;
1128 	bfa_wc_up(&fabric->wc);
1129 }
1130 
1131 /*
1132  *   A child vport is being deleted from fabric.
1133  *
1134  *   Vport is being deleted.
1135  */
1136 void
bfa_fcs_fabric_delvport(struct bfa_fcs_fabric_s * fabric,struct bfa_fcs_vport_s * vport)1137 bfa_fcs_fabric_delvport(struct bfa_fcs_fabric_s *fabric,
1138 			struct bfa_fcs_vport_s *vport)
1139 {
1140 	list_del(&vport->qe);
1141 	fabric->num_vports--;
1142 	bfa_wc_down(&fabric->wc);
1143 }
1144 
1145 
1146 /*
1147  * Lookup for a vport within a fabric given its pwwn
1148  */
1149 struct bfa_fcs_vport_s *
bfa_fcs_fabric_vport_lookup(struct bfa_fcs_fabric_s * fabric,wwn_t pwwn)1150 bfa_fcs_fabric_vport_lookup(struct bfa_fcs_fabric_s *fabric, wwn_t pwwn)
1151 {
1152 	struct bfa_fcs_vport_s *vport;
1153 	struct list_head	      *qe;
1154 
1155 	list_for_each(qe, &fabric->vport_q) {
1156 		vport = (struct bfa_fcs_vport_s *) qe;
1157 		if (bfa_fcs_lport_get_pwwn(&vport->lport) == pwwn)
1158 			return vport;
1159 	}
1160 
1161 	return NULL;
1162 }
1163 
1164 
1165 /*
1166  *  Get OUI of the attached switch.
1167  *
1168  *  Note : Use of this function should be avoided as much as possible.
1169  *         This function should be used only if there is any requirement
1170 *          to check for FOS version below 6.3.
1171  *         To check if the attached fabric is a brocade fabric, use
1172  *         bfa_lps_is_brcd_fabric() which works for FOS versions 6.3
1173  *         or above only.
1174  */
1175 
1176 u16
bfa_fcs_fabric_get_switch_oui(struct bfa_fcs_fabric_s * fabric)1177 bfa_fcs_fabric_get_switch_oui(struct bfa_fcs_fabric_s *fabric)
1178 {
1179 	wwn_t fab_nwwn;
1180 	u8 *tmp;
1181 	u16 oui;
1182 
1183 	fab_nwwn = fabric->lps->pr_nwwn;
1184 
1185 	tmp = (u8 *)&fab_nwwn;
1186 	oui = (tmp[3] << 8) | tmp[4];
1187 
1188 	return oui;
1189 }
1190 /*
1191  *		Unsolicited frame receive handling.
1192  */
1193 void
bfa_fcs_fabric_uf_recv(struct bfa_fcs_fabric_s * fabric,struct fchs_s * fchs,u16 len)1194 bfa_fcs_fabric_uf_recv(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
1195 		       u16 len)
1196 {
1197 	u32	pid = fchs->d_id;
1198 	struct bfa_fcs_vport_s *vport;
1199 	struct list_head	      *qe;
1200 	struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
1201 	struct fc_logi_s *flogi = (struct fc_logi_s *) els_cmd;
1202 
1203 	bfa_trc(fabric->fcs, len);
1204 	bfa_trc(fabric->fcs, pid);
1205 
1206 	/*
1207 	 * Look for our own FLOGI frames being looped back. This means an
1208 	 * external loopback cable is in place. Our own FLOGI frames are
1209 	 * sometimes looped back when switch port gets temporarily bypassed.
1210 	 */
1211 	if ((pid == bfa_ntoh3b(FC_FABRIC_PORT)) &&
1212 	    (els_cmd->els_code == FC_ELS_FLOGI) &&
1213 	    (flogi->port_name == bfa_fcs_lport_get_pwwn(&fabric->bport))) {
1214 		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LOOPBACK);
1215 		return;
1216 	}
1217 
1218 	/*
1219 	 * FLOGI/EVFP exchanges should be consumed by base fabric.
1220 	 */
1221 	if (fchs->d_id == bfa_hton3b(FC_FABRIC_PORT)) {
1222 		bfa_trc(fabric->fcs, pid);
1223 		bfa_fcs_fabric_process_uf(fabric, fchs, len);
1224 		return;
1225 	}
1226 
1227 	if (fabric->bport.pid == pid) {
1228 		/*
1229 		 * All authentication frames should be routed to auth
1230 		 */
1231 		bfa_trc(fabric->fcs, els_cmd->els_code);
1232 		if (els_cmd->els_code == FC_ELS_AUTH) {
1233 			bfa_trc(fabric->fcs, els_cmd->els_code);
1234 			return;
1235 		}
1236 
1237 		bfa_trc(fabric->fcs, *(u8 *) ((u8 *) fchs));
1238 		bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
1239 		return;
1240 	}
1241 
1242 	/*
1243 	 * look for a matching local port ID
1244 	 */
1245 	list_for_each(qe, &fabric->vport_q) {
1246 		vport = (struct bfa_fcs_vport_s *) qe;
1247 		if (vport->lport.pid == pid) {
1248 			bfa_fcs_lport_uf_recv(&vport->lport, fchs, len);
1249 			return;
1250 		}
1251 	}
1252 
1253 	if (!bfa_fcs_fabric_is_switched(fabric))
1254 		bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
1255 
1256 	bfa_trc(fabric->fcs, fchs->type);
1257 }
1258 
1259 /*
1260  *		Unsolicited frames to be processed by fabric.
1261  */
1262 static void
bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s * fabric,struct fchs_s * fchs,u16 len)1263 bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
1264 			  u16 len)
1265 {
1266 	struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
1267 
1268 	bfa_trc(fabric->fcs, els_cmd->els_code);
1269 
1270 	switch (els_cmd->els_code) {
1271 	case FC_ELS_FLOGI:
1272 		bfa_fcs_fabric_process_flogi(fabric, fchs, len);
1273 		break;
1274 
1275 	default:
1276 		/*
1277 		 * need to generate a LS_RJT
1278 		 */
1279 		break;
1280 	}
1281 }
1282 
1283 /*
1284  *	Process	incoming FLOGI
1285  */
1286 static void
bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s * fabric,struct fchs_s * fchs,u16 len)1287 bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
1288 			struct fchs_s *fchs, u16 len)
1289 {
1290 	struct fc_logi_s *flogi = (struct fc_logi_s *) (fchs + 1);
1291 	struct bfa_fcs_lport_s *bport = &fabric->bport;
1292 
1293 	bfa_trc(fabric->fcs, fchs->s_id);
1294 
1295 	fabric->stats.flogi_rcvd++;
1296 	/*
1297 	 * Check port type. It should be 0 = n-port.
1298 	 */
1299 	if (flogi->csp.port_type) {
1300 		/*
1301 		 * @todo: may need to send a LS_RJT
1302 		 */
1303 		bfa_trc(fabric->fcs, flogi->port_name);
1304 		fabric->stats.flogi_rejected++;
1305 		return;
1306 	}
1307 
1308 	fabric->bb_credit = be16_to_cpu(flogi->csp.bbcred);
1309 	bport->port_topo.pn2n.rem_port_wwn = flogi->port_name;
1310 	bport->port_topo.pn2n.reply_oxid = fchs->ox_id;
1311 
1312 	/*
1313 	 * Send a Flogi Acc
1314 	 */
1315 	bfa_fcs_fabric_send_flogi_acc(fabric);
1316 	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
1317 }
1318 
1319 static void
bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s * fabric)1320 bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric)
1321 {
1322 	struct bfa_lport_cfg_s *pcfg = &fabric->bport.port_cfg;
1323 	struct bfa_fcs_lport_n2n_s *n2n_port = &fabric->bport.port_topo.pn2n;
1324 	struct bfa_s	  *bfa = fabric->fcs->bfa;
1325 	struct bfa_fcxp_s *fcxp;
1326 	u16	reqlen;
1327 	struct fchs_s	fchs;
1328 
1329 	fcxp = bfa_fcs_fcxp_alloc(fabric->fcs, BFA_FALSE);
1330 	/*
1331 	 * Do not expect this failure -- expect remote node to retry
1332 	 */
1333 	if (!fcxp)
1334 		return;
1335 
1336 	reqlen = fc_flogi_acc_build(&fchs, bfa_fcxp_get_reqbuf(fcxp),
1337 				    bfa_hton3b(FC_FABRIC_PORT),
1338 				    n2n_port->reply_oxid, pcfg->pwwn,
1339 				    pcfg->nwwn,
1340 				    bfa_fcport_get_maxfrsize(bfa),
1341 				    bfa_fcport_get_rx_bbcredit(bfa), 0);
1342 
1343 	bfa_fcxp_send(fcxp, NULL, fabric->vf_id, fabric->lps->bfa_tag,
1344 		      BFA_FALSE, FC_CLASS_3,
1345 		      reqlen, &fchs, bfa_fcs_fabric_flogiacc_comp, fabric,
1346 		      FC_MAX_PDUSZ, 0);
1347 }
1348 
1349 /*
1350  *   Flogi Acc completion callback.
1351  */
1352 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)1353 bfa_fcs_fabric_flogiacc_comp(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg,
1354 			     bfa_status_t status, u32 rsp_len,
1355 			     u32 resid_len, struct fchs_s *rspfchs)
1356 {
1357 	struct bfa_fcs_fabric_s *fabric = cbarg;
1358 
1359 	bfa_trc(fabric->fcs, status);
1360 }
1361 
1362 
1363 /*
1364  * Send AEN notification
1365  */
1366 static void
bfa_fcs_fabric_aen_post(struct bfa_fcs_lport_s * port,enum bfa_port_aen_event event)1367 bfa_fcs_fabric_aen_post(struct bfa_fcs_lport_s *port,
1368 			enum bfa_port_aen_event event)
1369 {
1370 	struct bfad_s *bfad = (struct bfad_s *)port->fabric->fcs->bfad;
1371 	struct bfa_aen_entry_s  *aen_entry;
1372 
1373 	bfad_get_aen_entry(bfad, aen_entry);
1374 	if (!aen_entry)
1375 		return;
1376 
1377 	aen_entry->aen_data.port.pwwn = bfa_fcs_lport_get_pwwn(port);
1378 	aen_entry->aen_data.port.fwwn = bfa_fcs_lport_get_fabric_name(port);
1379 
1380 	/* Send the AEN notification */
1381 	bfad_im_post_vendor_event(aen_entry, bfad, ++port->fcs->fcs_aen_seq,
1382 				  BFA_AEN_CAT_PORT, event);
1383 }
1384 
1385 /*
1386  *
1387  * @param[in] fabric - fabric
1388  * @param[in] wwn_t - new fabric name
1389  *
1390  * @return - none
1391  */
1392 void
bfa_fcs_fabric_set_fabric_name(struct bfa_fcs_fabric_s * fabric,wwn_t fabric_name)1393 bfa_fcs_fabric_set_fabric_name(struct bfa_fcs_fabric_s *fabric,
1394 			       wwn_t fabric_name)
1395 {
1396 	struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
1397 	char	pwwn_ptr[BFA_STRING_32];
1398 	char	fwwn_ptr[BFA_STRING_32];
1399 
1400 	bfa_trc(fabric->fcs, fabric_name);
1401 
1402 	if (fabric->fabric_name == 0) {
1403 		/*
1404 		 * With BRCD switches, we don't get Fabric Name in FLOGI.
1405 		 * Don't generate a fabric name change event in this case.
1406 		 */
1407 		fabric->fabric_name = fabric_name;
1408 	} else {
1409 		fabric->fabric_name = fabric_name;
1410 		wwn2str(pwwn_ptr, bfa_fcs_lport_get_pwwn(&fabric->bport));
1411 		wwn2str(fwwn_ptr,
1412 			bfa_fcs_lport_get_fabric_name(&fabric->bport));
1413 		BFA_LOG(KERN_WARNING, bfad, bfa_log_level,
1414 			"Base port WWN = %s Fabric WWN = %s\n",
1415 			pwwn_ptr, fwwn_ptr);
1416 		bfa_fcs_fabric_aen_post(&fabric->bport,
1417 				BFA_PORT_AEN_FABRIC_NAME_CHANGE);
1418 	}
1419 }
1420 
1421 void
bfa_cb_lps_flogo_comp(void * bfad,void * uarg)1422 bfa_cb_lps_flogo_comp(void *bfad, void *uarg)
1423 {
1424 	struct bfa_fcs_fabric_s *fabric = uarg;
1425 	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LOGOCOMP);
1426 }
1427 
1428 /*
1429  *	Returns FCS vf structure for a given vf_id.
1430  *
1431  *	param[in]	vf_id - VF_ID
1432  *
1433  *	return
1434  *	If lookup succeeds, retuns fcs vf object, otherwise returns NULL
1435  */
1436 bfa_fcs_vf_t   *
bfa_fcs_vf_lookup(struct bfa_fcs_s * fcs,u16 vf_id)1437 bfa_fcs_vf_lookup(struct bfa_fcs_s *fcs, u16 vf_id)
1438 {
1439 	bfa_trc(fcs, vf_id);
1440 	if (vf_id == FC_VF_ID_NULL)
1441 		return &fcs->fabric;
1442 
1443 	return NULL;
1444 }
1445 
1446 /*
1447  *	Return the list of local logical ports present in the given VF.
1448  *
1449  *	@param[in]	vf	vf for which logical ports are returned
1450  *	@param[out]	lpwwn	returned logical port wwn list
1451  *	@param[in,out]	nlports in:size of lpwwn list;
1452  *				out:total elements present,
1453  *				actual elements returned is limited by the size
1454  */
1455 void
bfa_fcs_vf_get_ports(bfa_fcs_vf_t * vf,wwn_t lpwwn[],int * nlports)1456 bfa_fcs_vf_get_ports(bfa_fcs_vf_t *vf, wwn_t lpwwn[], int *nlports)
1457 {
1458 	struct list_head *qe;
1459 	struct bfa_fcs_vport_s *vport;
1460 	int	i = 0;
1461 	struct bfa_fcs_s	*fcs;
1462 
1463 	if (vf == NULL || lpwwn == NULL || *nlports == 0)
1464 		return;
1465 
1466 	fcs = vf->fcs;
1467 
1468 	bfa_trc(fcs, vf->vf_id);
1469 	bfa_trc(fcs, (uint32_t) *nlports);
1470 
1471 	lpwwn[i++] = vf->bport.port_cfg.pwwn;
1472 
1473 	list_for_each(qe, &vf->vport_q) {
1474 		if (i >= *nlports)
1475 			break;
1476 
1477 		vport = (struct bfa_fcs_vport_s *) qe;
1478 		lpwwn[i++] = vport->lport.port_cfg.pwwn;
1479 	}
1480 
1481 	bfa_trc(fcs, i);
1482 	*nlports = i;
1483 }
1484 
1485 /*
1486  * BFA FCS PPORT ( physical port)
1487  */
1488 static void
bfa_fcs_port_event_handler(void * cbarg,enum bfa_port_linkstate event)1489 bfa_fcs_port_event_handler(void *cbarg, enum bfa_port_linkstate event)
1490 {
1491 	struct bfa_fcs_s      *fcs = cbarg;
1492 
1493 	bfa_trc(fcs, event);
1494 
1495 	switch (event) {
1496 	case BFA_PORT_LINKUP:
1497 		bfa_fcs_fabric_link_up(&fcs->fabric);
1498 		break;
1499 
1500 	case BFA_PORT_LINKDOWN:
1501 		bfa_fcs_fabric_link_down(&fcs->fabric);
1502 		break;
1503 
1504 	default:
1505 		WARN_ON(1);
1506 	}
1507 }
1508 
1509 /*
1510  * BFA FCS UF ( Unsolicited Frames)
1511  */
1512 
1513 /*
1514  *		BFA callback for unsolicited frame receive handler.
1515  *
1516  * @param[in]		cbarg		callback arg for receive handler
1517  * @param[in]		uf		unsolicited frame descriptor
1518  *
1519  * @return None
1520  */
1521 static void
bfa_fcs_uf_recv(void * cbarg,struct bfa_uf_s * uf)1522 bfa_fcs_uf_recv(void *cbarg, struct bfa_uf_s *uf)
1523 {
1524 	struct bfa_fcs_s	*fcs = (struct bfa_fcs_s *) cbarg;
1525 	struct fchs_s	*fchs = bfa_uf_get_frmbuf(uf);
1526 	u16	len = bfa_uf_get_frmlen(uf);
1527 	struct fc_vft_s *vft;
1528 	struct bfa_fcs_fabric_s *fabric;
1529 
1530 	/*
1531 	 * check for VFT header
1532 	 */
1533 	if (fchs->routing == FC_RTG_EXT_HDR &&
1534 	    fchs->cat_info == FC_CAT_VFT_HDR) {
1535 		bfa_stats(fcs, uf.tagged);
1536 		vft = bfa_uf_get_frmbuf(uf);
1537 		if (fcs->port_vfid == vft->vf_id)
1538 			fabric = &fcs->fabric;
1539 		else
1540 			fabric = bfa_fcs_vf_lookup(fcs, (u16) vft->vf_id);
1541 
1542 		/*
1543 		 * drop frame if vfid is unknown
1544 		 */
1545 		if (!fabric) {
1546 			WARN_ON(1);
1547 			bfa_stats(fcs, uf.vfid_unknown);
1548 			bfa_uf_free(uf);
1549 			return;
1550 		}
1551 
1552 		/*
1553 		 * skip vft header
1554 		 */
1555 		fchs = (struct fchs_s *) (vft + 1);
1556 		len -= sizeof(struct fc_vft_s);
1557 
1558 		bfa_trc(fcs, vft->vf_id);
1559 	} else {
1560 		bfa_stats(fcs, uf.untagged);
1561 		fabric = &fcs->fabric;
1562 	}
1563 
1564 	bfa_trc(fcs, ((u32 *) fchs)[0]);
1565 	bfa_trc(fcs, ((u32 *) fchs)[1]);
1566 	bfa_trc(fcs, ((u32 *) fchs)[2]);
1567 	bfa_trc(fcs, ((u32 *) fchs)[3]);
1568 	bfa_trc(fcs, ((u32 *) fchs)[4]);
1569 	bfa_trc(fcs, ((u32 *) fchs)[5]);
1570 	bfa_trc(fcs, len);
1571 
1572 	bfa_fcs_fabric_uf_recv(fabric, fchs, len);
1573 	bfa_uf_free(uf);
1574 }
1575 
1576 /*
1577  * fcs attach -- called once to initialize data structures at driver attach time
1578  */
1579 void
bfa_fcs_attach(struct bfa_fcs_s * fcs,struct bfa_s * bfa,struct bfad_s * bfad,bfa_boolean_t min_cfg)1580 bfa_fcs_attach(struct bfa_fcs_s *fcs, struct bfa_s *bfa, struct bfad_s *bfad,
1581 	       bfa_boolean_t min_cfg)
1582 {
1583 	struct bfa_fcs_fabric_s *fabric = &fcs->fabric;
1584 
1585 	fcs->bfa = bfa;
1586 	fcs->bfad = bfad;
1587 	fcs->min_cfg = min_cfg;
1588 	fcs->num_rport_logins = 0;
1589 
1590 	bfa->fcs = BFA_TRUE;
1591 	fcbuild_init();
1592 
1593 	bfa_fcport_event_register(fcs->bfa, bfa_fcs_port_event_handler, fcs);
1594 	bfa_uf_recv_register(fcs->bfa, bfa_fcs_uf_recv, fcs);
1595 
1596 	memset(fabric, 0, sizeof(struct bfa_fcs_fabric_s));
1597 
1598 	/*
1599 	 * Initialize base fabric.
1600 	 */
1601 	fabric->fcs = fcs;
1602 	INIT_LIST_HEAD(&fabric->vport_q);
1603 	INIT_LIST_HEAD(&fabric->vf_q);
1604 	fabric->lps = bfa_lps_alloc(fcs->bfa);
1605 	WARN_ON(!fabric->lps);
1606 
1607 	/*
1608 	 * Initialize fabric delete completion handler. Fabric deletion is
1609 	 * complete when the last vport delete is complete.
1610 	 */
1611 	bfa_wc_init(&fabric->wc, bfa_fcs_fabric_delete_comp, fabric);
1612 	bfa_wc_up(&fabric->wc); /* For the base port */
1613 
1614 	bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
1615 	bfa_fcs_lport_attach(&fabric->bport, fabric->fcs, FC_VF_ID_NULL, NULL);
1616 }
1617